※一部利用できない機能があります
| 1.
論文 |
論文
|
Beitner, H. ; Nakatani, Toshio ; 中谷, 壽男
|
||||
| 2.
論文 |
論文
|
Beitner, H. ; Nakatani, Toshio ; Hammar, H. ; 中谷, 壽男
概要:
A case of Crohn's disease complicated by Sweet's syndrome is presented. The main ultrastructural findings were the multiplication of basal lamina surrounding the venulea, interendothelial gaps and in perivascular locations mixed infiltrates
…
of neutrophiles and erythrocytes. The changes indicate that the initial site of the reaction was the walls of the dermal vessels.
続きを見る
|
||||
| 3.
論文 |
論文
|
Hedblad, M. A. ; Nakatani, Toshio ; Beitner, H. ; 中谷, 壽男
概要:
A male patient with clinically and histopathologically verified Darier's disease and a history of deterioration after sun exposure was irradiated on uninvolved skin with 25, 50 and 75 J/cm2 of UVA once a week for five weeks. He also
…
received 3 and 5 times his individually established MED of UVB. Since no signs of keratosis follicularis were detected one week after the last irradiation, he was then exposed to 10 times his MED with UVB, whereupon clinically characteristic lesions of keratosis follicularis developed. One week after this exposure, biopsies were taken from the UV-induced lesions and processed for light and transmission electron microscopic investigation. Light microscopy revealed suprabasal lacunae, corps ronds and grains. In the electron microscope, gaps in the basal lamina beneath the suprabasal lacunae were also observed, through which cytoplasmic processes of lymphocyte- and fibroblast-like cells and basal keratinocytes protruded. Parts of keratinocytes with disruptive cell membranes were localized in the gaps of the basal lamina. Also, multiplication of the basal lamina was frequent.
続きを見る
|
||||
| 4.
論文 |
論文
|
Ohtani, Yuko ; Ohtani, Osamu ; Nakatani, Toshio ; 大谷, 修 ; 中谷, 壽男
概要:
金沢大学医薬保健研究域保健学系<br />The present study demonstrated the threedimensional microstructure of the rat diaphragm by scanning
…
electron microscopy (SEM) of either intact or alkali-treated tissues, enzyme-histochemistry, and confocal laser scanning microscopy (LSM). The peritoneal and pleural surfaces of the diaphragm were covered with mesothelial cells studded with microvilli. Many round gaps were formed between the mesothelial cells. The submesothelial connective tissue contained voluminous, irregularly shaped lymphatics. Some of these lymphatics extended many funnel-like projections of their endothelia towards the pored region of the mesothelium. On coming into contact with the mesothelium, many of the lymphatic projections were perforated at their ends, thus giving rise to stomata connecting the peritoneal cavity and lymphatic lumen. Some projections ended blindly while plugging the mesothelial pores, thereby making visible some intercellular gaps in this contact. The subperitoneal sheet of the collagen fiber network possessed clusters of foramina which tightly fit the passage of the lymphatic projections. Confocal LSM of the diaphragm after intraperitoneal injection of FITC-dextran demonstrated the tracer both in the lymphatic lumina and in the connective tissue spaces. Our results indicate that peritoneal fluid is allowed to flow into the connective tissue spaces of the diaphragm through intercellular gaps and into lymphatics through stomata.
続きを見る
|
||||
| 5.
論文 |
論文
|
Nakatani, Toshio ; Beitner, Harry ; 中谷, 壽男
概要:
金沢大学医薬保健研究域保健学系<br />Melanosomes in sporadic dysplastic nevi were examined by transmission electron microscope. In parti
…
cular the structure of macromelansomes was observed. Macromelanosomes were present in both nevus cells and keratinocytes. They were round and consisted of a core structure and a cortex structure. The core was composed of electron-dense amorphous material and electron-lucent microvesicles. The cortex contained grains of different sizes and electron densities. Occasionally small melanosomes were observed in the cortex. Electron-lucent microvesicles were also present in small spherical and ellipsoid melanosomes. Melanosome complexes observed in nevus cells contained degrading melanosomes with electronlucent microvesicles, dispersed microvesicles and grains. Melanosome complexes with structures resembling those found in macromelanosomes were also present. The result of the investigation suggests that melanosome complexes found in nevus cells might become macromelanosomes through autophagy.
続きを見る
|
||||
| 6.
論文 |
論文
|
Shinohara, Harumichi ; Morisawa, Satoshi ; Nakatani, Toshio ; Ohtani, Osamu ; 中谷, 壽男
概要:
金沢大学医薬保健研究域保健学系<br />The auricular length, auricular base length and auricular width were measured in 94 human fetuses w
…
ith crownrump (CR) lengths ranging from 49 mm (approximately 11 weeks of gestational age) to 250 mm (approximately 31 weeks of gestational age). The three measurement values showed linear increases as the CR length increased, suggesting that they are useful parameters to indicate intrauterine growth. The measurement values also suggested that the mandibular and hyoid derivatives did not grow independently, but did grow with maintaining a certain relationship.
続きを見る
|
||||
| 7.
論文 |
論文
|
Matsuda, Takeshi ; Fukuo, Yoshifumi ; Shinohara, Harumichi ; Morisawa, Satoshi ; Nakatani, Toshio ; 中谷, 壽男
概要:
金沢大学医薬保健研究域保健学系<br />The mouse pericardium is a continuous serous membrane, up to postnatal day 6 (P6), that consists of
…
pericardial and pleural mesothelia with sparse connective tissue sandwiched in between. This study shows that on P7 the pericardium becomes fenestrated, and the pericardial and pleural cavities become continuous. We found that the number of pores per pericardium increased continuously with the advance of age and reached as many as 3000 on P21. Transmission electron microscopy of the pericardium revealed various structures of the pericardial and pleural mesothelia that may relate to the formation of the pericardial pores. The pericardial and pleural mesothelia were adjoined with cytoplasmic processes that extended toward the base of the opposing mesothelium. As a result of the adjoinment, a pair of U-shaped folds were formed. The two U-shaped folds were connected with tight junctions at their apices, and separation of these junctions may give rise to the pericardial pores.
続きを見る
|
||||
| 8.
論文 |
論文
|
Nakatani, Toshio ; Beitner, Harry ; 中谷, 壽男
概要:
金沢大学医薬保健研究域保健学系<br />Seven female human subjects were irradiated with 4 Gy of grenz rays and 30 J/cm2 of long-wave ultra
…
violet (UVA) radiation once a week for three weeks.6/7 subjects when irradiated on the back developed a clearly visible pigmentation due to both grenz-ray and UVA pigmentation. The effect on epidermal melanocytes was observed with transmission electron microscopy. Ultrastructural changes in melanocytes following both grenz-ray and UVA irradiation were an increase in the number of premature and mature melanosomes, elongation and protrusion of cytoplasm, sometimes indented nuclei, and the development of multilamella of basal lamina. Compared with UVA-irradiated skin, in the same individuals the melanocytes seemed somewhat more hypertrophic after grenz-ray irradiation. In general the observed qualitative ultrastructural differences between UVA- and grenz-ray-irradiated melanocytes were limited, indicating that the influence of grenz-rays is similar to that of UVA.
続きを見る
|
||||
| 9.
論文 |
論文
|
Tazaki, Kazue ; Ishida, Hideki ; 田崎, 和江 ; 石田, 秀樹
概要:
金沢大学理工研究域地球社会基盤学系
|
||||
| 10.
論文 |
論文
|
田崎, 和江 ; Tazaki, Kazue
概要:
金沢大学理工研究域地球社会基盤学系<br />Our atmosphere, oceans, sediments and soils, all reflect major or minor influences of the biosphe
…
re. In the sediments, erosion of the topsoil, complex mixture of clay minerals and carbon compounds, is one of crisis in the world economy. Clay mineralogist concerned with the sediments and mineral deposits must understand weathering processes plus microorganisms in detail. Bacteria must be important in all transport processes of elements between sediments and water systems. In the atmosphere, fine particles, such as clays, loess and fly ash produced by combusion of fossil fuels are biologically and chemically recycling in our planet. The consequences of a massive increase in the use of coal or other fossil carbon sources give the global atomospheric increase of CO2N2O, acid gases, etc.Modern electron microscopic techniques and the new array of computer surface techniques, ESCA, Auger, SIMS, etc. have made it possible to see Å level structures, and chemistry of the fine particles. Examples of such fine mineralogical particles in the surface environment are described in this paper.
続きを見る
|
||||
| 11.
論文 |
論文
|
田崎, 和江 ; 森, 忠洋 ; 野中, 資博 ; 野田, 修司 ; Tazaki, Kazue ; Mori, Tadahiro ; Nonaka, Tsuguhiro ; Noda, Shuji
概要:
金沢大学理工研究域地球社会基盤学系<br />Concrete sewer pipe was heavily corroded by sulfate which was produced by sulfur oxidizing bacter
…
ia in the Ohmuta region of Japan. The corroded materials were studied mineralogically to gain a better understanding of the corrosion mechanism. The formation of jarosite KFe3 (SO4) 2 (OH) 6, as a result of reaction between sulfate and hydration products of portland cement, were found in the most corroded part of concrete sewer pipe. The sulfate-generated corrosion is grouped into several zones on the base of differences in the mineral formation of secondary products:Zone A & B; Jarosite formation zone, Zone C; Fe-rich zone,Zone D; gypsum formation zone, Zone E; Fe-rich zone,Zone F; Cracking zone, Zone G; Fresh concrete zone.Zones A-E in the corroded parts include expansion, loss strength and stiffness and disintegration, whereas Zones E and F show cracking and brown rim stained with iron oxides. In Zone G, ettringite crystals are formed under conditions of high pH. Since hydrated cements containing considerable amount of large ettringite crystals show high strength but no expansion.In order to evaluate the relative effects of corrosion of concrete, the rates of K-feldspar dissolution have been analized by EDAX-step scanning. The dissolution process of K-feldspar was observed that Al and K contents were rapidly decreased near rim, within 2μm region, whereas Fe content was increased.The results of these analyses indicate that the effect of K component from K-feldspar dissolution is important factor to form jarosite at pH of 3.5-4.0. The dissolution mechanism of K-feldspar and the addition of Fe component are changed significantly due to the corrosion of concretes.
続きを見る
|
||||
| 12.
論文 |
論文
|
堀坂, 明生 ; 田崎, 和江 ; 野田, 修司 ; Horisaka, Akio ; Tazaki, Kazue ; Noda, Shuji
概要:
金沢大学理工研究域地球社会基盤学系<br />Biomineralization of pyrite has been found inside of diatom cell in sludge (Hedoro) of Lake Nakau
…
mi. Direct observations by using SEM equipped with BSI, and EDX revealed formation processes of microbial pyrite. In sludge (0-2.5cm depth) numerous diatoms (Coscinodiscus nitidus) form several framboidal pyrite (5μm diameter) inside cell. The framboidal pyrite are coated by thin film compose of Fe and S that is the almost same composition as pyrite. The BSI image shows slightly weak dense on the surface of film suggesting presence of organics. Chemical composition of normal diatom cell is alomst pure Si. On the other hand, the diatom forming pyrite shows elementary differences between girdle and valve. Chemistory of the girdle shows Fe and S elements indicating substitution of Si. Quantity of Fe and S increases outside to inside of girdle. The formation process of framboidal pyrite inside cell is as follows: The first step is formation of spherical FeS mineral (pyrrhotite), next step is a mixture of pyrite and pyrrhotite by adding S and dehydration. Then the mixture makes a rough framboid. Hexahedron and pentagonal dodecahedron are the characteristic crystal habits of framboidal pyrite in diatom. Some framboidal pyrite coated by thin film of clays with organics. Dozens of framboid aggregate form a ball 50μm in diameter. Formation of framboidal pyrite in diatom should be initially controlled by organics of biofilm.
続きを見る
|
||||
| 13.
論文 |
論文
|
田崎, 和江 ; 荒谷, 美智 ; 矢野 , 倉実 ; 海保, 邦夫 ; 野田, 修司 ; Tazaki, Kazue ; Aratani, Michi ; Yanokura, Minoru ; Kaiho, Kunio ; Noda, Shuji
概要:
金沢大学理工研究域地球社会基盤学系<br />Spherical heating-shocked mica clays are found in Cretaceous-Tertiary (K-T) boundary sediments in
…
the eastern district of Hokkaido, northernmost Japan. The K-T boundary sediments contain relatively high Ir concentrations suggesting an asteroid struck the Earth and caused mass extinctions at the end of the Cretaceous. Foraminifera are totally absent in the grayish black clay. Mineralogical investigations of the claystone have been carried out by the use of X-ray powder diffraction, high resolution electron microscope, energy dispersive spectrometer and heavy-iron Rutherford scattering. Singularity of clay minerals of a continuous stratigraphic section spanning the K-T boundary reveals that the spherical interstratified clay in < 2μm fraction are largely decomposed. The spherical clay shows characteristic stacking disorder of 14Å, 10Å, 7Å phase, which is suggested to be heating eventsin the K-T boundary.
続きを見る
|
||||
| 14.
論文 |
論文
|
田崎, 和江 ; 野中, 資博 ; 森, 忠洋 ; 野田, 修司 ; Tazaki, Kazue ; Nonaka, Tsuguhiro ; Mori, Tadahiro ; Noda, Shuji
概要:
金沢大学理工研究域地球社会基盤学系<br />Mortar bars are exposed to H2S gas (25-300ppm) for 10 months at 12-30C°. Sulfate-generated deteri
…
orations in the mortar bars include expansion, cracking and disintegration. The heavily corroded mortar bar produced gypsum, calcite and secondary ettringite with a trace amount of barite. The secondary ettringite shows the same chemistry as the primary ettringite, but the morphology is quite different from the primary one. Ettringite crystals with sharp point, 10-20μm long, are primary formed during the hydration of mortar bar, whereas small lath-shaped crystals, about 3μm long as observed by SEM are high concentration of hydroxyl ions. Gypsum, calcite and the secondary ettringite are formed step by step under acidic condition. The iron oxides layer is presented significantly between corroded and un-corroded zones which is the same process of deterioration on portland cement concrete.
続きを見る
|
||||
| 15.
論文 |
論文
|
Tazaki, Kazue ; Zhou, Guoping ; Makaino, Koji ; 田崎, 和江 ; 周, 国平 ; 馬飼野, 光治
概要:
金沢大学理工研究域地球社会基盤学系<br />デイーゼルエンジン車の排気ガスを一日2回直接受けたスイセンを採取し, XRF, SEM-EDX, TEMで観察および分析を行った.排気ガスに汚染されたスイセンの葉は黒色に変色し,気孔の内部及び周
…
辺には,Sを含む多量の微粒子が被覆し, Al, Si, Cl, Ca, K, Feの増加も認められた.これらの結果は,ディーゼルエンジンの排気ガスが植物の光合成などの生理作用に,短期間で大きく影響を及ぼすことを明らかにした.<br />Polluted narcissuses by exhaust emissions derived from a diesel engine twice a day were investigated by XRF, SEM-EDX and TEM analyses. Polluted narcissus was characterized by no flower, deformed leave and the change of color from green to yellow and black. S was increased about 6 times. About 33% of S-coated carbonaceous soots was retained through breath holes by narcissus, causing the normal breath and photosynthesis of narcissus damaged. This could be a major factor of narcissus growing abnormally during a short period (2 months).
続きを見る
|
||||
| 16.
論文 |
論文
|
田崎, 和江 ; Fyfe, W. S. ; Tazaki, Kazue
概要:
金沢大学理工研究域地球社会基盤学系<br />Alkali-feldspar in an alkaline rock shows evidence for the formation of iron rich primitive clay
…
precursors in the earliest weathering stage. High-resolution TEM with EDAX, electron diffraction patterns and lattice images clearly show the decomposion of Alkali-feldspar and growth of primitive sheet structure mineral. The primitive clay precursors consist of Si and Fe with small amount of K and Al. These precursors with 14-20 A spacing show diffuse rings electron diffraction pattern due to low crystallinity and random orientation. The diameter of precursors is 150-200 A.
続きを見る
|
||||
| 17.
論文 |
論文
|
高須, 晃 ; 田崎, 和江 ; Takasu, Akira ; Tazaki, Kazue
概要:
金沢大学理工研究域地球社会基盤学系
|
||||
| 18.
論文 |
論文
|
田崎, 和江 ; 島根大学理学部地質学教室環境自主ゼミナール ; 野田, 修司 ; Tazaki, Kazue ; Noda, Shuji
概要:
金沢大学理工研究域地球社会基盤学系<br />Local atmosphere reflects major or minor influences of the world environment. Fine particles of f
…
ly ash produced by combustion of fossil fuels are directly cycling in our planet by west wind. The consequences of a massive increase in the combustion of oil give the global atmospheric increase of CO2, N2O, acid gases etc. Since January, 1991 during the Gulf War, the acidity of rain and NO2 contents in the atmosphere are directly increased three hundred times as other clean countries by fossil fuel burning. The fly ash from oil combustion now makes a massive contribution to global aerosols. Snow dusts which are collected in February 20-25, 1991, at Shimane University may be related to emission of sulphur and nitrogen species of oil-derived fly ash from Kuwait by west wind 5000m high. SEM and TEM observations revealed the presence of very fine particles or thin films of sulphur species in the snow with an abundance of fine fly ash.
続きを見る
|
||||
| 19.
論文 |
論文
|
石渡, 明 ; 笹谷, 啓一 ; 田崎, 和江 ; 坂本, 浩 ; 中西, 孝 ; 小村, 和久 ; 辻森, 樹 ; 大浦, 泰嗣 ; 宮本, ユタカ ; 赤羽, 久忠 ; 渡辺, 誠 ; 布村, 克志 ; Ishiwatari, Akira ; Sasatani, Keiichi ; Kazue Tazaki, ; Sakamoto, Koh ; Nakanishi, Takashi ; Komura, Kazuhisa ; Tsujimori, Tatsuki ; Oura, Yasuji ; Miyamoto, Yutaka ; Akahane, Hisatada ; Watanabe, Makoto ; Nunomura, Katsushi
概要:
金沢大学理工研究域地球社会基盤学系
|
||||
| 20.
論文 |
論文
|
小岩崎, 浩一 ; 本坊, 好正 ; 田崎, 和江 ; 森, 忠洋 ; Koiwasaki, Koichi ; Honbou, Yoshimasa ; Tazaki, Kazue ; Mori, Tadahiro
概要:
金沢大学理工研究域地球社会基盤学系<br />Jarosite KFe3(SO4)2(OH)6 and ammoniojarosite NH4Fe3(SO4)2(OH)6 were experimentaly formed in 9 K-m
…
edium with Thiobacillus ferrooxidans at 33℃ under acidic condition. The product shows characteristic peaks of jarosite at 3.08, 1.99 and 1.83 A , and those of ammoniojarosite at 3.09, 5.12, 1.98 and 1.83 A in use X-ray powder diffraction and electron diffraction pattern. TEM and SEM observations revealed the crystal growth processes of these minerals as follows ; Bacillus bacterial cells take the form of cross-finger. Both iron and sulfur components precipitated on cell wall. The iron component takes the form of burs, whereas the sulfur component forms rosary-shaped materials. The sizes of iron materials range from 0.5 to 2.0 μm in diameter while those of sulfur materials range from 0.05 to 0.1μm in diameter. Next, potassium and hydroxyl in 9 K-medium reacted on both iron and sulfur components on the cell wall. Cubic or platy jarosite, 0.1 to 5.0μm in diameter, is formed within 3 days. Jarosite of final products changed to reform rosary or parallel crystalline materials. Potassium in jarosite is substituted for ammonia to form ammoniojarosite within 5 days. Jarosite was produced by bacterial mineralization in 9 K-medium within 3 days, and those of ammoniojarosite within 5 days. Without Thiobacillus ferrooxidans, jarosite and ammoniojarosite were produced after 5 or 9 days respectively. The results suggest that Thiobacillus ferrooxidans contributes formation of jarosite and ammoniojarosite as catalyst.
続きを見る
|
||||
| 21.
論文 |
論文
|
田崎, 和江 ; Tazaki, Kazue
概要:
金沢大学理工研究域地球社会基盤学系<br />地球上に広く分布する微細な炭素粒子は,環境の変化に最も敏感に対応する物質の一つである.その炭素の起源,微細形態,結晶成長の過程,化学結合,分布などを明かにし,炭素物質を評価するうえで,電子線を用
…
いた手法が有効である.ここには,様々な炭素物質について,その目的に応じた有効な分析方法の実例を示した.走査型(SEM)および透過型電子顕微鏡(TEM)による観察は,炭素物質の微細形態,結晶成長過程,結晶度を知るのに適している.バクテリアなどを含む有機物が濃集した非晶質の炭素は,続成作用により,高結晶度のグラファイトヘと変化する.初期の炭素物質は,球粒,管,フレーク,薄膜,シート,リボン状などさまざまな形態をとり,最も成長した結晶であるグラファイトは,六角板状のバウムクーヘン状構造をとる.炭素の分布を知るには,エレクトロンマイクロプローブ(EPMA)やオージェ(Auger)による元素濃度分布図が有効である.オージェは,導電性物質の蒸着を必要としないので,岩石中のカーボンの存在を薄片の状態で検出することが可能である.高い導電性を持つことで知られているワイオミング産のSybille Monzosyeniteに,オージェ分析を適用し,鉱物境界に高濃度の炭素が存在することが,高導電性の要因の一つであることを明かにした.また,オージェは導電性物質の蒸着なしで,オングストロームのオーダの最表面分析が可能である.フーリエ赤外線分析(FT-IR)は,炭素の化学結合や水分子との結合状態を知ることができる.グラファイトは,その結晶度の違いによりOHやC-C結合の吸収の程度が異なる例として,片麻岩中の低結晶度の炭素から水分が抜け,次に酸素が抜けてグラファイトヘと変化するプロセスを示した.また,電子線走査化学分析器(ESCA)による炭素(1S)の高分解能分析は,様々な炭素結合の種類とその量比を知るのに有効である.この方法により,深海底堆積物中の海緑石に含まれる炭素が,COO,C-O,C-Cそしてグラファイトといった異なる炭素結合により構成されていることを明かにした.この結果は,海緑石が有機物起源であり,その後,無機化すること,有機炭素と無機炭素の境界は明瞭ではないことなどを示している.さらに,重イオン加速器(RILAC)は,炭素が表面吸着しているか,または結晶構造に組み込まれているかの判断に有効である.例えば都市ガスのすすの分析は,金属やSiO_2といった標準試料と比べ,炭素が結晶性の構造を待つことを示した.同時に,この方法は,酸素と水素の存在状態の差異も明瞭に表わすことができる.重イオン加速器は,大気からもたらされた汚染物質の炭素と物質本来の結晶構造中の炭素原子との区別に有効である.<br />Very fine carbon particulates formed by both inorganic and biological processes in the Earth have the most sensitive response to global change. Various electron microtechniques are usufu1 to reveal the micromorphology, texture, growing processes, crystalinity, chemical bond and the distribution of carbon materials. In this article useful methods for evaluation of carbon in various carbon materials are introduced. Amorphous organic carbon naturally and artificially transforms into high crystalline graphite. SEM and TEM observations reveal that precursor carbon materials are composed of spherules, tubular, fiakes, thin films ,fla tsheets, and ribbon texture. Bacteri aand nannobacteria may play a prorninent catalyzing role in the precipitatio onf carbon materia]s. Hexagonal onion-like texture is the most stable form ofcarbon durin ggraphitizatio n,EPMA and Auger can be used for carbon elernentary rnapping. Auger-spectrometer depth profiling and carbon content rnap applied to Sybille Monzosyenite having high electrical conductivity revealed a high concentration of carbon on grain boundaries of the minerals. Chemical bonding of carbon and hydrogen can be analyzed by FT-IR method. FT-IR spectra showing different intensity of OH and C-C absorbed bands are related with the degree of crystalinity of graphite in rocks. The result suggests that graphite occurred by dehydration and reduction of organic materials, ESCA is usufu1 method to know various carbon binding. High resolution of C_ls spectra of micro ESCA can discriminate various carbon chemical binding, such as COO, C-O, C-C, and graphite. ESCA spectra of glauconite in deep sea sediments showed various ratios of COO, C-O, C-C and graphite, suggesting organic origin of glauconite. The result also suggests that there are no clear boundary between organic and inorganic carbon. RILAC method can be used for evaluation of atmospheric contamination of carbon from structural carbon. RILAC spectra of soot showed characteristic recoiled carbon, oxygen and hydrogen ions with standards of purity for metalic plate and Si0_2.
続きを見る
|
||||
| 22.
論文 |
論文
|
田代, 陽子 ; 田崎, 和江 ; Tashiro, Yoko ; Tazaki, Kazue
概要:
金沢大学理工研究域地球社会基盤学系<br />角間川や金沢大学調整池ではLeptothrix sp., Gallionella sp.やToxothrix sp.といった鉄酸化細菌や,桿菌,球菌によって形成されている黄褐色のバイオマットがみ
…
られる.本研究では現地での付着実験を行い,バイオマット形成の初期段階に着目し,主に透過型電子顕微鏡(TEM)を用いて観察,分析を行った.その結果,Toxothrix sp.の粘着物質(polysaccharides)が,水酸化鉄の微粒子を積極的に細胞壁に付着させる役割を担っていることが明らかになった.polysaccharidesのようなToxothrix sp.の粘着物質は,Fe^<2+>をFe^<3+>に換えてエネルギーを得る鉄酸化細菌のバイオミネラリゼーションによって生成された水酸化鉄が拡散するのを防ぎ,200nmのコロイド状微粒子として取り囲んだ状態で凝集させる.凝集した水酸化鉄のコロイド粒子はpolysaccharidesの薄膜から押し出された後もそれ自体で集合体を形成する.polysaccharidesは,水酸化鉄を固定し,その大きさを支配しながら鉄物質を固体にして堆積する役割を担っていることが示唆される.このような水酸化鉄の凝集形態は,バイオマットの厚みを増す要因である.<br />Brownish yellow microbial mats growing along the Kakuma River and at the controlling pond in the Kakuma Campus of Kanazawa University are of predominantly iron oxidizing bacteria, such as Leptothrix sp., Gallionella sp. and Toxothrix sp. Those microbial mats use ferrous ions as their energy source through the oxidation into ferric ions. Transmission electron microscopy of the primitive microbial mat, have revealed mucoid substances of Toxothrix sp. like polysaccharides are effective for adhesion of iron hydroxides produced through biomineralization of Toxothrix sp. Iron hydroxides coated with mucoid substances are coagulated into colloidal particles 200nm in size. Such condensed colloidal iron hydroxides grow into the aggregates and subsequently may be expelled outward from the thin membrane of polysaccharides. It is suggested that polysaccharides of Toxothrix sp. prevent dispersion of iron hydroxides and promote coagulation of iron materials. Such a condensation process of iron hydroxides is considered to be a factor for increasing the thickness of microbial mats.
続きを見る
|
||||
| 23.
論文 |
論文
|
田崎, 和江 ; 高須, 晃 ; Tazaki, Kazue ; Takasu, Akira
概要:
金沢大学理工研究域地球社会基盤学系
|
||||
| 24.
論文 |
論文
|
岸上, 佳史 ; 桜山, 和美 ; 田崎, 和江 ; 上島, 雅人 ; 渡辺, 弘明 ; Kishigami, Yoshifumi ; Sakurayama, Kazumi ; Tazaki, Kazue ; Ueshima, Masato ; Watanabe, Hiroaki
概要:
金沢大学理工研究域地球社会基盤学系<br />尾小屋鉱山は緑色凝灰岩中にできた裂罅充填型浅熱水性の銅鉱床である.1971年に閉山するまで,当鉱山では黄鉄鉱,黄銅鉱,方鉛鉱,閃亜鉛鉱を産出していた.重金属は捨てられた鉱石から溶出し,河川へと流
…
出している.石川県の尾小屋鉱山地域では,Fe,Cu,Zn,Cdがズリ捨て場から梯川へ流入している.本鉱山では,様々な色のバイオマットが第六立坑周辺に形成している.緑色のバイオマットに覆われている大量の茶色のバイオマットが坑口から続く谷川の河床に重金属を堆積している.これらのバイオマットは光学顕微鏡および走査型電子顕微鏡(SEM)を用いて観察を行った.また,バイオマットの鉱物および元素組成はX線粉末回折分析装置(XRD),蛍光X線分析装置(XRF)およびエネルギー分散分析装置(EDX)で分析を行った.坑水に含まれている主な重金属は,Fe(26.85mg/l),Cu(3.97mg/l),Zn(23.94mg/l),Cd(0.09mg/l)である.Fe,Zn,Cuやその他の金属が溶存している坑水中から,ピンク色バイオマットは銅を選択的に濃集し,また深緑色のバイオマットはFeを濃集している.ピンク色バイオマット中には自然銅,赤銅鉱,石英が存在していた.また,茶色のバイオマットはFeを選択的に濃集し,針鉄鉱やマグヘマイトといった鉱物を形成していた.バクテリアや藻類などの微生物はFeやCuといった重金属を細胞に吸着および濃集し生体鉱物を作ることが明らかになったので報告する.<br />Ogoya Mine in Ishikawa Prefecture, Japan, is one of the fissure-filling vein type copper deposits in the Green Tuff region. The mine contains pyrite, chalcopyrite, galena and sphalerite. Heavy metal ions dissolveed from abandoned metal-mine are common in waste water pool and stream. In the metal mining area, Fe, Cu, Zn and Cd are releasing from dumping area to the Kakehashi River. The drainage water contains Fe (26.85mg/l), Cu (3.97mg/l), Zn (23.94mg/l) and Cd (0.09mg/l). In this mine, various colored microbial mats (biomats) are grown around the No.6 pit drainage system. Abundant brown biomats covered with green biomats have fixed heavy metals on the drainage channel down the pithead. These biomats are observed by both optical and scanning electron microscopes (SEM). Minerals in the biomat and their chemical compositions were analyzed by X-ray diffraction (XRD), X-ray fluorescence (XRF) and energy dispersive X-ray analyzer (EDX). The reddish biomats fix Cu selectively from drainage water, whereas the dark green biomats fix Fe. Microorganisms, such as bacteria and algae, capture most of heavy metals as Fe- and Cu-minerals in/on the cell. It is clarified that copper and cuprite are formed in reddish biomats, and that goethite and maghemite are formed in the brown biomats.
続きを見る
|
||||
| 25.
論文 |
論文
|
井上, 多津男 ; 長尾, 敬介 ; 田崎, 和江 ; 川谷, 芳弘 ; Inoue, Tatuo ; Nagao, Keisuke ; Tazaki, Kazue ; Kawatani, Yoshihiro
概要:
金沢大学理工研究域地球社会基盤学系
|
||||
| 26.
論文 |
論文
|
Tazaki, Kazue ; 田崎, 和江
概要:
金沢大学理工研究域地球社会基盤学系<br />Because of increasing population, human activity has become a dominant process modifying the eart
…
h environment. Understanding the new environmental stresses includes study of interface processes on macro- and micro-scales. Application of electron microscopy to the study of sulfides and sulfate complexes in atmospheric dust, in acidic river sediment, in sewage sludge and in water solution, provide unique information on the interaction between bacteria and human activities in close-to-environmental conditions. Microorganisms exhibit great powers of trace metal accumulation and immolization. They may be frequently encountered in extreme metal contaminated environment both natural and man-made. The sulfides leading to the formation of sulfide minerals were observed by scanning electron microscopy (SEM), transmission electron microscopy (TEM) equipped with energy-dispersive X-ray analysis (EDX). For example: 1 Atmospheric sulfide minerals in air dust, 2 Sulfides precipitation with bacteria in polluted mining river sediment, 3 Sulfide mineralization in sludge, 4 Experimental sulfide mineralization in 9 K medium. Atmosphere oxidation rate of SO2 is largely balanced by exchange across the hydrosphere-biosphere-land surface interfaces. Fluctuating volcanic emissions or Chinese loess may have profound influence. SEM-EDX observation indicated that the air dust and acid rain-water contained gypsum, barite and sulfur films which may be due to contributions from volcanic eruption. TEM observation showed bacteria with S-rich thin films in dust of rain-water suggesting interaction between polluted S-rich precipitation and bacterial activity in atmospheric environment. The study of acidic river sediment indicates the enormous influence of the biosphere in maintaining river chemistry of sulfate complexes and sulfides. The electron microscopic techniques enable us to examine the reactive surface at the micron scale, the surface where reaction occurs, that control so many of the basic biogeochemical processes. Micro-scopic study showed that all biomass contains a significant quantity of metallic constituents, and mineralization in living and dead biodebris may contribute to sulfides transport from the hydrosphere into sediment. The bacterial cell walls are remarkable in their ability to fix metals and provide sites for nucleation and growth of Mn, Fe, Cu and Zn minerals. The sulfate complexes and sulfides in sludge in Lake Nakaumi were investigated, including study on the formation of minerals and uptake of metals by bacteria or plant. SEM-EDX observation showed that pyrite, pyrrhotite and gypsum were formed on the top of surface sludge. The aggregate of framboidal pyrite gradually grew in diatom shell which composed of S and Fe, suggesting the processes of sulfide mineral formations related with organisms. The sewage sludge is a valuable source of N, P, and heavy metallic elements (e. g. , Cu, Fe, Mn, Zn) and organic matter. Such metals are of environmental concern due to their potential effects on plant uptake and growth. Jarosite used in the laboratory study was produced from a mixture of 9 K medium and Thiobacillus ferroxidans for a period of several days. SEM-EDX observation with XRD showed that jarosite was formed after 3 days and ammoniojarosite was formed after 7 days from the experimental solution. If T. ferroxidans is present, jarosite can be formed at room temperature by aerating solutions of FeSO4, and K2SO4 at pH 2 within few days. Elemental sulfur interacted with the metal-loaded bacterial cells, affected both the eventual earth science and crystal habit of the metal sulfides, and formed a variety of crystalline metal sulfides. Observation of sulfate complexe changes is unique opportunity to better manage all our earth environment.
続きを見る
|
||||
| 27.
論文 |
論文
|
渡辺, 俊一 ; 小田, 誠 ; 太田, 安彦 ; 林, 義信 ; 清水, 淳三 ; 渡辺, 洋宇 ; Watanabe, Shun-ichi ; Oda, Makoto ; Ota, Yasuhiko ; Hayashi, Yoshinobu ; Shimizu, Junzo ; Watanabe, Yoh
概要:
金沢大学医薬保健研究域医学系<br />症例は6歳, 男児.生後7ヵ月頃から前胸部陥凹が目立つようになった.1歳6ヵ月頃から発育の遅延, X脚, 偏平足などを認めるようになり当院小児科を受診, Morquio症候群との診断を受けた.当科にて
…
漏斗胸に対し腹直筋有茎胸骨翻転術を施行した.Morquio症候群は遺伝性ムコ多糖代謝異常症のIV型に属するまれな疾患で, 特別な治療法はなく対症療法のみが施行される.Morquio症候群にみられる胸郭や脊柱の変形に対しては, しばしぼ装具を用いた保存的療法が行われるがあまり効果はなく, 逆に心肺機能を抑える結果となったり, また本疾患は知能障害を伴わないため装具の着用が精神的に強い負担となることが多い.漏斗胸を合併したMorquio症候群患者に対する胸骨翻転術は, 精神的にも心肺機能上も有効な治療法であると思われた.<br />A 6-year-old boy with Morquio's syndrome was referred from the department of pediatrics in our hospital for a sterno-turnover operation to repair his funnel chest.In Morquio's syndrome, also termed mucopolysaccharidosis IV, there are many skeletal abnormalities and growth retardation because of acid sulfatase deficiency. This syndrome, however, has no neurological abnormalities. Instrumental repair of the skeletal deformities is not effective and even results in the suppression of cardiopulmonary functions or in mental depression. Therefore, the sterno-turnover operation seems to be the best therapy for funnel chest in patients with Morquio's syndrome.
続きを見る
|
||||
| 28.
論文 |
論文
|
木下, 敬弘 ; 太田, 安彦 ; 平能, 康充 ; 渡邊, 俊一 ; 小田, 誠 ; 村上, 眞也 ; 渡辺, 洋宇 ; Kinoshita, Takahiro ; Ohta, Yasuhiko ; Hirano, Yasumitsu ; Watanabe, Shun-ichi ; Oda, Makoto ; Murakami, Shinya ; Watanabe, Yoh
概要:
金沢大学医薬保健研究域医学系<br />症例は56歳, 女性.健診にて左下肺野の異常影を指摘された.胸部CTにて肺動静脈瘻が疑われ入院となった.肺動脈造影にて左下葉の動静脈痩は最大径60mm, 流入血管径が8mmと大きいため経皮的カテーテル
…
塞栓術 (以下;TAE) は不可能と判断された.また同時に右下葉にも最大径10mmの動静脈瘻を認めたため, これに対してはTAEを施行した.左側の動静脈瘻に対して開胸下に瘻切除術を施行した.<br />A 56-year-woman was admitted to the hospital with an abnormal shadow in the left lower lung field on chest X-ray film. The findings on chest CT examination suggested a pulmonary arteriovenous fistula. Left pulmonary arteriogram showed a large fistula (60 mm) with feeding vessels of 8 mm in diameter in the left lower lobe. It seemed to be impossible to perform embolization because of the size of fistula and its feeding vessels. Right pulmonary arteriogram at the same time revealed a small fistula of 10 mm in diameter in the right lower lobe, which was treated by embolization. The fistula of the left lung was resected on thoracotomy.
続きを見る
|
||||
| 29.
論文 |
論文
|
森田, 克哉 ; 林, 義信 ; 家接, 健一 ; 清水, 淳三 ; 村上, 眞也 ; 小田, 誠 ; 荒能, 義彦 ; 徳楽, 正人 ; 長尾, 信 ; 矢崎, 潮 ; 渡辺, 洋宇 ; Morita, Katsuya ; Hayashi, Yoshinobu ; Ietsugu, Kenichi ; Shimizu, Junzo ; Murakami, Shinya ; Oda, Makoto ; Arano, Yoshihiko ; Tokuraku, Masato ; Nagao, Shin ; Yamazaki, Ushio ; Watanabe, Yoh
概要:
金沢大学医薬保健研究域医学系<br />原発性非小細胞肺癌切除65例に対し, PCNA発現率で評価した腫瘍増殖能とリンパ節転移との関連について検討を行い, 生物学的悪性度の指標としての有用性について考察した.PCNA標識率は, 手術材料を用
…
いてflow cytometerにより複数部位で測定し, その平均値で評価した.腺癌36例中13例, 扁平上皮癌29例中5例にリンパ節転移を認め, その頻度は腫瘍径の増大にしたがって増加した.しかしPCNA標識率とリンパ節転移の頻度は相関を認めず, また腺癌では腫瘍径とも相関を認めなかった.腫瘍径が同一の場合, PCNA標識率が高値すなわちdoubling timeが短い方が発癌から発見までの期間が短かいと考えられ, 腺癌ではT1でかつPCNA標識率が高値のものでリンパ節転移を認めなかった.PCNA標識率は腫瘍の動的状態を反映すると考えられる増殖能を表しており, 癌のある時点での進行度を表すTNM分類とは独立した因子と考えられた.<br />Proliferating cell nuclear antigen (PCNA) expression was studied in relation to the frequency of lymphnode metastasis in 65 resected non-small cell lung cancers. PCNA labeling index (LI) % was assayed objectively with flow cytometry. Lymphnode metastasis was found in 13 of 36 adenocarcinomas and in 5 of 29 squamous cell carcinomas. The frequency of lymphnode metastasis correlated positively with tumor size but not with PCNA LI%. In adenocarcinomas, there was no currelation between tumor size and PCNA LI%, but there was no lymphnode metastasis when the tumor was less than 30 mm in diameter and the PCNA LI % was high. It was concluded that PCNA LI% did not correlate with other prognostic factors but showed proliferating potential.
続きを見る
|
||||
| 30.
論文 |
論文
|
常塚, 宣男 ; 清水, 淳三 ; 小田, 誠 ; 関戸, 伸明 ; 和田, 真也 ; 渡辺, 洋宇 ; Tsunezuka, Yoshio ; Shimizu, Junzo ; Oda, Makoto ; Sekido, Nobuaki ; Wada, Masanari ; Watanabe, Yoh
概要:
金沢大学医薬保健研究域医学系<br />症例は55歳, 女性.主訴は咳嗽.胸部X線写真にて, 右上肺野に腫瘤陰影を指摘された.術前に確定診断は得られなかったが肺癌を疑って, 右上葉切除術を施行した.切除標本の病理組織検査では形質細胞の腫瘍性
…
増殖を認めたが, 一部にリンパ濾胞の形成, リンパ球の巣状配列を認め, 形質細胞腫とCastlemanリンパ腫-Plasma cell typeとの鑑別が問題となった.PAP法による免疫組織化学的検査の結果, IgA-λ型の単クローン性の染色性を持つ肺原発性の形質細胞腫と診断された.組織学的にCastlemanリンパ腫と類似した形質細胞腫は, われわれが調べ得た範囲では本邦3例目であるが, 肺原発の症例は過去に報告例がない.<br />Extramedullary plasmacytomas are uncommon tumors that affect various tissues, most commonly in the upper airways. We report a case of solitary plasmacytoma of the lung that was difficult to differentiate histopathologically from Castleman's lymphoma.A 55-year old woman was admitted to our hospital with an abnormal shadow on chest X-ray films but no symptoms. Chest CT scan disclosed a solitary nodule with low density in the right upper lobe. Right upper lobectomy was performed, and histological examination showed diffuse proliferation of plasma cells and lymphoid follicles partially similar to Castleman's lymphoma. Immunohistologically, the plasmacytoma cells were stained with IgA and λ chains in a monoclonal secretory pattern.
続きを見る
|
||||
| 31.
論文 |
論文
|
紺家, 千津子 ; 真田, 弘美 ; 須釜, 淳子 ; 大桑, 真由美 ; 永川, 宅和 ; 中谷, 壽男 ; 田端, 恵子 ; Konya, Chizuko ; Sanada, Hiromi ; Sugama, Junko ; Ookuwa, Mayumi ; Nagakawa, Takukazu ; Nakatani, Toshio ; Tabata, Keiko
概要:
金沢大学医薬保健研究域保健学系<br />本研究の目的は, 褥瘡部位の低輝度エコー所見と褥瘡の深度との関係を明らかにすることである. 対象は, 38名の49個の褥瘡である. 褥瘡の外診所見と周波数7.5MHzでのエコー所見を1週間ごとに観察
…
した. 分析は, 初回の視診と触診による外診所見での深度とエコー所見の低輝度エコーにより判断した深度について, 確定深度との相違を比較した. その結果, (1)49個の褥瘡の初回観察時には, 外診所見では20個が壊死に覆われ, 7個はエコーにて低輝度所見を認めた. (2)壊死組織のないI度およびII度の褥瘡は, 確定深度も同様であった. (3)初回低輝度所見を認めた褥瘡の深度は, III度またはIV度であった. (4)初回観察時に低輝度エコー所見の有無と確定深度の全層損傷の有無との関係は, 感度58.3%, 特異度100.0%, 陽性反応適中度100%, 陰性反応適中度88.1%であった. 以上より, 褥瘡の壊死部に低輝度エコー所見を認めた場合, 全層損傷と判定するアセスメント方法は有効であることが示唆された.<br />The purpose of this study was to examine the predictive validity of ultrasound in the initial assessment for pressure ulcer staging. Forty-nine pressure ulcers of 38 patients were examined. The pressure ulcers were visually assessed using the stages defined by the NPUAP and were examined by ultrasound (7.5 MHz). The initial assessment was determined from the ratio of agreement using visual assessment and ultrasound based on the level of severity. In the first assessment, 20 of the 49 pressure ulcers were assessed to be necrotic by visual observation and 7 of 49 were hypoechoic by ultrasound observation. In the final assessment, all pressure ulcers without necrosis were stage I or stage II types. The hypoechoic pressure ulcers in the first assessment were found to be either stage III or stage IV types. Using these results, the predictive validity of the initial assessment using ultrasound was calculated. The results were as follows : sensitivity 58.3%, specificity 100.0%, positive predictive value 100.0% and negative predictive value 88.1%. This suggests that hypoechoic images detected in initial assessment using ultrasound can be predictive of full-thickness stage III : or IV wounds.<br />日本褥瘡学会の許可を得て登録_2021.09.22
続きを見る
|
||||
| 32.
論文 |
論文
|
Nakatani, Toshio ; Tanaka, Shigenori ; Mizukami, Shigeki ; 中谷, 壽男
概要:
金沢大学医薬保健研究域保健学系<br />日本解剖学会の許可を得て登録_ 20210714
|
||||
| 33.
論文 |
論文
|
Nakatani, Toshio ; Mizukami, Shigeki ; Tanaka, Shigenori ; 中谷, 壽男
概要:
金沢大学医薬保健研究域保健学系<br />日本解剖学会の許可を得て登録
|
||||
| 34.
論文 |
論文
|
Tanaka, Shigenori ; Nakatani, Toshio ; Mizukami, Shigeki ; Yasui, Kinya ; Uemura, Masanori ; 中谷, 壽男
概要:
金沢大学医薬保健研究域保健学系<br />日本解剖学会の許可を得て登録_ 20210714
|
||||
| 35.
論文 |
論文
|
Tanaka, Shigenori ; Shoumura, Shizuko ; Chen, Huayue ; Nakatani, Toshio ; Mizukami, Shigeki ; 中谷, 壽男
概要:
金沢大学医薬保健研究域保健学系<br />日本解剖学会の許可を得て登録_ 20210714
|
||||
| 36.
論文 |
論文
|
Tanaka, Shigenori ; Nakatani, Toshio ; Mizukami, Shigeki ; Lee, Hye-Yeon ; Chung, In-Huyk ; 中谷, 壽男
概要:
金沢大学医薬保健研究域保健学系<br />We report a variant branch of the internal laryngeal nerve found in a Japanese male body. This bran
…
ch, arising in the piriform fossa from the inferior portion of the loose network formed by the intercommunicating subbranches of the internal laryngeal nerve, descended in the interval between the thyroid and arytenoid cartilages accompanied by a branch of the superior laryngeal artery as far downward as the lowest portion of the thyroid cartilage. Here it crossed lateral to the inferior laryngeal nerve to which it gave off a communicating branch and reached the deep surface of the cricothyroid muscle. In this muscle it split into several divisions, each of which issued filaments to this muscle. The terminal branch of this variant branch ended in the fascia covering the cricothyroid muscle and the cricoid cartilage.<br />日本解剖学会の許可を得て登録
続きを見る
|
||||
| 37.
論文 |
論文
|
Nakatani, Toshio ; Tanaka, Shigenori ; Mizukami, Shigeki ; 中谷, 壽男
概要:
金沢大学医薬保健研究域保健学系<br />日本解剖学会の許可を得て登録_ 20210714
|
||||
| 38.
論文 |
論文
|
Nakatani, Toshio ; Mizukami, Shigeki ; Tanaka, Shigenori ; 中谷, 壽男
概要:
金沢大学医薬保健研究域保健学系<br />日本解剖学会の許可を得て登録_ 20210714
|
||||
| 39.
論文 |
論文
|
Mizukami, Shigeki ; Tanaka, Shigenori ; Nakatani, Toshio ; 中谷, 壽男
概要:
金沢大学医薬保健研究域保健学系<br />日本解剖学会の許可を得て登録_ 20210714
|
||||
| 40.
論文 |
論文
|
中谷, 壽男 ; 田中, 重徳 ; 水上, 茂樹 ; Nakatani, Toshio ; Tanaka, Shigenori ; Mizukami, Shigeki
概要:
金沢大学医薬保健研究域保健学系<br />日本解剖学会の許可を得て登録_ 20210714
|
||||
| 41.
論文 |
論文
|
Takada, Jun ; Hoshi, Masaharu ; Nagatomo, Tsuneto ; Yamamoto, Masayoshi ; Endo, Satoru ; Takatsuji, Toshihiro ; Yoshikawa, Isao ; Gusev, Boris I. ; Sakerbaev, Alexander K. ; Tchaijunusova, Nailya. J. ; 山本, 政儀
概要:
金沢大学環日本海域環境研究センター<br />Accumulated external radiation doses of residents near the Semipalatinsk nuclear test site of the
…
former USSR are presented as a results of study by the thermoluminescence technique for bricks sampled at several settlements in 1995 and 1996. The external doses that we evaluated from exposed bricks were up to about 100 cGy for resident. The external doses at several points in the center of Semipalatinsk City ranged from a background level to 60 cGy, which was remarkably high compared with the previously reported values based on military data.
続きを見る
|
||||
| 42.
論文 |
論文
|
Hayakawa, Kazuichi ; Miyoshi, Yasuko ; Kurimoto, Hiroaki ; Matzushima, Yuko ; Takayama, Nariaki ; Tanaka, Seishi ; Miyazaki, Motoichi ; 早川, 和一 ; 三好, 裕子 ; 栗本, 博昭 ; 松島, 優子 ; 高山, 成明 ; 田中, 星司 ; 宮崎, 元一
概要:
金沢大学理工研究域自然システム学系<br />A HPLC determination method for methamphetamine (MA) and its metabolites in the urine samples of
…
abusers has been developed. MA, amphetamine (AP), norephedrine (NE), p-hydroxymethamphetamine (pOHMA), p-hydoroxyamphetamine (pOHAP) and an internal standard, namely β-phenylethylamine (PEA) were derivatized with dansyl chloride. They were separated on a reversed phase column with gradient elution using an acetonitrile/tetrahydrofuran/imidazole buffer mobile phase and chemilumigenically determined using bis(2, 4, 6-trichlorophenyl)-oxalate/hydrogen peroxide as post column reagents. The lower determination limits were as low as 1×10-14-3×10-14mol. AP, NE, pOHAP and PEA were derivatized with naphthalene-2, 3-dicarboxaldehyde, and were separated on a reversed phase column using an acetonitrile/imidazole buffer mobile phase and chemilumigenically determined. The lower determination limits were 3×10-16-1.5×10-15mol. Enzymatic hydrolysis of glucuronides of pOHMA (pOHMAG) and pOHAP (pOHAPG) allowed them to be determined as pOHMA and pOHAP, respectively. After adjusting the pH of the urine samples to 10.5 and adding PEA, all metabolites except glucuronides were extracted quantitatively into chloroform-isopropanol (3 : 1). Utilizing the two methods, MA and all metabolites were determined in urine samples of MA abusers. The tendency, in order of decreasing concentration was : [MA]>[A]>[pOHMAG]>[pOHMA]>[NE]>[pOHAPG]>[pOHAP]. Although ephedrine (EP) was detected in several samples, it was not considered to be a metabolite of MA but rather a component derived from cough medicine.
続きを見る
|
||||
| 43.
論文 |
論文
|
山本, 敦 ; 早川, 和一 ; Yamamoto, Atsushi ; Hayakawa, Kazuichi
概要:
金沢大学理工研究域自然システム学系
|
||||
| 44.
論文 |
論文
|
後藤, 純雄 ; 峯木, 茂 ; 杉田, 和俊 ; 遠藤, 治 ; 村山, 留美子 ; 内山, 巌雄 ; 田中, 基裕 ; 早川, 和一 ; Goto, Sumio ; Mineki, Shigeru ; Sugita, Kazutoshi ; Endo, Osamu ; Murayama, Rumiko ; Uchiyama, Iwao ; Tanaka, Motohiro ; Hayakawa, Kazuichi
概要:
金沢大学理工研究域自然システム学系<br />ナホトカ号から流出し日本海沿岸に漂着した重油の汚染状況を把握するための調査研究の一環として, 平成9年1月16日に採取した漂着重油, ナホトカ号船首部分の重油および市販C重油中に含まれる多環芳香
…
族炭化水素 (PAH) の分析及び抽出物の変異原性を測定した。その結果, 漂着重油のベンゾ (a) ピレン (BaP) 含有量は1984年に採取された東京都市部の土砂51試料の平均値の約1/4であることやその変異原比活性は同土砂の約4倍であることなどを認めた。<br />As a part of research studies on the pollution at heavy-oil coated parts of the Sea of Japan coastline, resulting from the wrecked Russian tanker Nakhodka on Jan. 2, the following experiments were performed using three heavy oil samples. Polycyclic aromatic hydrocarbons (PAH) were analyzed by HPLC in the heavy oil that washed ashore, which was collected at Mikuni-cho in Fukui Prefecture on Jan. 16, 1997, heavy oil in the oil compartment of the bow of the tanker, and commercial heavy oil (class C) .Mutagenicities of the extracts of these oil samples were also measured. The amount of benzo (a) pyrene (BaP) contained in the heavy oil that washed ashore was about a quarter of the average in 51 soil extracted samples, which were collected at an urban area in Tokyo in 1984, and mutagenicity of the extract from the oil was about 4-fold higher than the average in the extracts from the soil samples.
続きを見る
|
||||
| 45.
論文 |
論文
|
石渡, 明 ; 宮下, 純夫 ; 齋藤, 大地 ; 辻森, 樹 ; Ishiwatari, Akira ; Miyashita, Sumio ; Saito, Daichi ; Tsujimori, Tatsuki
概要:
金沢大学理工研究域自然システム学系
|
||||
| 46.
論文 |
論文
|
河野, 芳輝 ; 石渡, 明 ; 大村, 明雄 ; 古本, 宗充 ; 守屋, 以智雄 ; 寒川, 旭 ; 向山, 栄 ; 西村, 智博 ; 中居, 康洋 ; 粟, 真人 ; Kono, Yoshiteru ; Ishiwatari, Akira ; Omura, Akio ; Furumoto, Muneyoshi ; Moriya, Ichiro ; Sangawa, Akira ; Mukoyama, Sakae ; Nishimura, Tomohiro ; Nakai, Yasuhiro ; Awa, Makoto
概要:
金沢大学理工研究域自然システム学系<br />平成8年度科学技術庁交付金を受けて石川県が行っている森本断層調査事業の一環として, 同断層に沿う金沢市梅田町の梅田B遺跡 (主に弥生時代～古墳時代) でトレンチ調査が行われ, 活断層の露頭が出現
…
した. 森本断層(三崎, 1980)は, 金沢市北方の海岸平野と丘陵を境する地形境界付近に推定されている, 長さ13kmの活断層である(第1図). 丘陵末端部の洪積層は海側へ40°～70°傾く撓曲構造をなしており(第2図), 1799年の寛政金沢地震がこの断層の活動によるとする指摘もある (寒川, 1986)が, 断層露頭は未発見だった. 新しい道路取り付けのため従来から行われていた遺跡の発掘調査で, 弥生時代の遺構面と水路が, 不自然に海側が高くなっているという指摘があり, 断層運動による撓曲の可能性を考えてトレンチ調査を行った. 長さ8m, 深さ6mの北西方向のトレンチの壁面に, 走向N38°E, 傾斜35°NW, 鉛直落差約1.Om の低角衝上断層の露頭が出現した (第3, 4, 5図). この露頭では, 下部の, よく固結した洪積層 (卯辰山層) がほぼ断層と同じ走向で海側へ40°傾斜し, 露頭上部の水平な未固結の沖積層 (厚さ4m程度) がそれを傾斜不整合で覆っている. 断層運動によって, 洪積層は剛体的に破断して断層に沿って変位しているが, 沖積層は流動変形して下部では押し被せ褶曲をなし, 上へ向かって次第に緩やかな撓曲へ移り変わっている. これらの構造は1回の断層運動で生じたもので, 変位の累積性はなく, 水平変位もほとんど見られない. この断層は海側が上昇した逆断層であり, 丘陵を隆起させてきた森本断層本体の運動とは逆センスなので, 主断層の活動に伴った層面すべり断層(吉岡, 1989)と思われる.トレンチの南北両面に見られる沖積層最上部のシルト層(炭質物の14C年代は2740±50YB. P. )はこの撓曲に参加して南東へ傾き, トレンチ北面では更に上位の弥生時代の腐植土層(同前, 2060±70Y. B, P. )もこの撓曲に参加しているように見える(第6図).上述のように, 断層を横切るトレンチ外の弥生時代の溝の遺構は変位しているが, トレンチの東半部に断面が現れているそれより新しい弥生時代の溝の遺構(同前, 1930±60Y. B. P. )は, 断層運動によって形成された擁曲崖の麓に沿って掘られた可能性がある. また, トレンチ西半部に断面が現れている古墳時代の溝の遺構(同前, 1410±50Y. B. P. )には変位が認められないことから, この断層運動(M6. 7以上の地震に相当)は約2000年前(±500年程度の不確実性があり得る)に発生した可能性が高い. 沖積層基底の炭質物の14年代は4430±60Y.B.P. なので, この断層はそれから現在までの間に1回だけ動いたことになる.周辺地域での従来の地質踏査, ボーリング調査および弾性波探査によると, 卯辰山層基底の高度は森本断層の両側で600mほど食い違っている. この変位が最近80万年間で起きたと仮定すると, 森本断層の平均変位速度はおよそ0.75m/1000年となる. 上述のように, 今回発見されたのは副次的な層面すべり断層と考えられ, 主断層のずれの量はもっと大きかった可能性が高い. 主断層が1mを越す変位を生じたとすると, 森本断層だけではなく, 南方延長の野町断層や富樫断層なども同時に動いた可能性があり, 今後の研究課題である.森本断層は, これまで確実度II(推定), 活動度B(0.1-1m/1000年)とされていた(活断層研究会, 1991)が, 今回の発見によって活断層であることが確実になり, 約2000年前にかなりの規模の地震を起こしたことがはっきりした. また, 今回発見された露頭は, 堆積物の固結の程度によって変形の様子が全く異なることを如実に示しており, 平坦な沖積平野の地下数mにも, このような活断層が隠れていることを証明した点で意義深い.
続きを見る
|
||||
| 47.
論文 |
論文
|
石渡, 明 ; Ishiwatari, Akira
概要:
金沢大学理工研究域自然システム学系<br />祁連(チーリェン)山脈は中国でもオフィオライトと藍閃片岩がよく発達し, それらの研究が進んでいる地域の一つである (從ほか, 1991). 祁連山脈はツァイダム盆地とアラシャン山地 (中朝地塊の
…
西部) の間にある原生代末期からデボン紀にかけての造山帯 (カレドニア期) であり, 北から走廊モラッセ帯, 北祁連摺曲帯, 中央祁連地塊, 南祁連摺曲帯に区分される. この巡検では北祁連摺曲帯以北を見た. ここでは古生代前期のオフィオライト, 藍閃片岩, 花醐岩などが山脈最高部を形成し, その北麓にシルル紀ブリッシュ, その北にデボン紀以後の厚いモラッセが分布する (Song, 1996). オフィオライトは3列をなし, カンブリア紀後期からオルドビス紀後期まで, 南から北へ形成年代が若くなる傾向がある (Song, 1996).このように北へ若くなる地質ユニットの全体的な配列は, ツァイダム地塊の北への衝上 (または中朝地塊の南への沈み込み) による造山運動を暗示するが (王・劉, 1976), 花崗岩の分布などを根拠とする北への沈み込み説もある (肖・王, 1984). 藍閃片岩は南北2帯に分かれて分布し, 南側は変成度が高くエクロジャイトを伴い, 北側は変成度が低い. 変成年代はどちらも 450Ma 前後である (Wuetal., 1993). この巡検の詳細および引用文献については, 本号末尾のニュース記事を参照されたい.
続きを見る
|
||||
| 48.
論文 |
論文
|
石渡, 明 ; 辻森, 樹 ; 早坂, 康隆 ; 杉本, 孝 ; 石賀, 裕明 ; Ishiwatari, Akira ; Tsujimori, Tatsuki ; Hayasaka, Yasutaka ; Sugimori, Takashi ; Ishiga, Hiroaki
概要:
金沢大学理工研究域自然システム学系<br />日本列島は古生代から新生代にかけて形成された典型的な付加型造山帯であり, その基本構造は衝上断層で境されたナップの重なりであって, ナップに含まれる地層や岩石の形成年代は一般に構造的上位のナップ
…
ほど古い. ナップには基盤岩(火成岩・変成岩)を含むものと, 堆積岩のみよりなるものがあるが, 日本列島の付加体の場合, 含まれる基盤岩の多くはオフィオライトや海山の断片である. 大陸地殻の断片と考えられる隠岐帯・飛帯を除くと, 西南日本内帯の古生代付加体には, 古生代前期以前に形成された大江山オフィオライトが構造的最上位を占め, その下に三郡－蓮華ナップ, 秋吉ナップ, 舞鶴ナップ(古生代後期以前の夜久野オフィオライトを含む), 超丹波ナップ, 三郡－周防ナップ(一部は中生代前期の付加体)があり, これら全体がジュラ紀付加体(美濃・丹波ナップ)を構造的に覆っている(Fig. 1)最近20年間に, これらのナップを境する衝上断層の露頭が次々に発見されてきた. ここにそれらの代表例をまとめて示す. Fig. 2は若桜地域において, 大江山オフィオライトの蛇紋岩化したマントルかんらん岩が蓮華ナップ(志谷層)の泥質片岩に衝上する露頭である(上村ほか, 1979, p.28). Fig.3 は新見地域で, 大江山オフィオライトの同岩が秋吉帯の石灰岩に衝上する露頭である(早坂ほか, 1995, Stop 1). この断層は3km以上にわたって追跡できる(Fig.4). Fig.5 は大屋地域において大江山オフィオライト(関宮岩体)の同岩が夜久野オフィオライトの玄武岩質凝灰角礫岩に衝上する露頭で, ここでは時代も岩石学的性質も異なる2つのオフィオライトが重なっている(Fig.6; Ishiwatari and Hayasaka, 1992のStop 14(中瀬地窓)の2km南方). Fig, 7は高浜地域で夜久野オフィオライトが超丹波帯の砂岩, 泥岩, 凝灰岩に衝上する露頭である(Ishiwatari and Hayasaka, 1992;Stop 6). Fig.8 とFig.9 は, 小浜地域および青垣地域において, 超丹波帯の二畳系氷上砂岩が丹波帯II型地層群のジュラ系泥質岩に衝上する露頭である(石賀ほか, 1987;Stop 2, 3).
続きを見る
|
||||
| 49.
論文 |
論文
|
Igarashi, Noboru ; Takeya, Ryouhei ; Sato, Tamotsu ; 五十嵐, 登
概要:
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85024290405&doi=10.1297%2fcpe.2.Supple2_79&partnerID=40&md5=12626aca
…
76eb2a4e78f5240390705369<br />Insulin-like growth factor-II (IGF-II) and its specific receptor are present in the central nervous system (CNS) of experimental animal models, where this peptide has unique roles in neuronal growth and differentiation. IGF-II in the cerebrospinal fluid (CSF), as well as in plasma, is bound to specific binding protein (IGFBP). In this study we examined CSF IGF-II levels and IGFBP patterns in children with various physiological and pathological states. IGF-II, dissociated from IGFBP by acid gel chromatography, was measured by RIA, and IGFBP analyzed by western-ligand blotting. CSF IGF- II levels were 16.7±4.9 ng/ml in control subjects and there were no age-related variations. In some cases with CNS tumor, hydrocephalus and inflammatory conditions, their CSF IGF-II levels were increased. CSF IGFBP mainly consisted of 34kd, 31kd and 24kd protein. In contrast to serum IGFBP, CSF IGFBP patterns were almost unaffected by age, and were increased in some CNS inflammatoryconditions. Although the specific role of IGF-II in the human CNS remains to be defined, our results suggest that the regulatory mechanisms for the IGF-II /IGFBP system are present in the human CNS as well as in animal models.
続きを見る
|
||||
| 50.
論文 |
論文
|
安川, 哲夫 ; Yasukawa, Tetsuo
概要:
金沢大学人間社会研究域学校教育系
|
||||
| 51.
論文 |
論文
|
江森, 一郎 ; Emori, Ichiro
概要:
金沢大学人間社会研究域学校教育系
|
||||
| 52.
論文 |
論文
|
寺田, 盛紀 ; Terada, Moriki
概要:
金沢大学人間社会研究域学校教育系
|
||||
| 53.
論文 |
論文
|
喜成, 年泰 ; 新宅, 救徳 ; 岩木, 信男 ; 堀, 純也 ; Kinari, Toshiyasu ; Shintaku, Sukenori ; Iwaki, Nobuo ; Hori, Junnya
概要:
金沢大学理工研究域機械工学系<br />In order to investigate the effects of temperature, relative humidity and strain rates on the stress
…
-strain curve of spandex yarn, tensile tests were performed under many kinds of conditions including impact tests.Stres-strain curves of spandex yarn were obtained on 7 levels in temperature ranging from 243 K to 333 K.Making an approximation with a linear equation, the relation between the modulus E obtained at the temperature ranging from 273 K to 333 K and the temperature was E=E20 (1 +KTΔT). Where E20. was the modulus at 293 K in temperature (=1.0 × 10-2N/tex), KT was the coefficient that gave the change in modulus with the change of 1 K in temperature (=-1.8 x 10-2 K-1) and ΔT was the discrepancy in temperature from 293 K. Under 273 K in temperature, the increase in the modulus with the decrease in temperature was much larger than the slope of the approximate line.In relative humidity ranging from 35 to 95% RH, 5 levels of tensile tests gave the following relation ; E=E65, (1+KHΔH), where E65. was the modulus at 65% RH (= 8.0 x 10-3N/tex), KH was the coefficient that gave the changein modulus with the change of 1% in relative humidity (=7.2 × 10-3) and ΔH was the discrepancy from 65% RH.Tensile tests on 7 levels in strain rates ranging from 1.67 × 10-3 to 147s-1 were performed. The relation of E=E1 (1 +Kv, log ε) between the modulus and the strain rate was approximately expressed by a linear equation.Where E1 was the modulus at 1 s-1 in strain rate (=1.0 × 10-2 N/tex), Kv was the coefficient that gave the change in modulus with the change of one order in strain rate.<br />出版社照会後に全文公開
続きを見る
|
||||
| 54.
論文 |
論文
|
新宅, 救徳 ; 喜成, 年泰 ; 穴田, 雅 ; Shintaku, Sukenori ; Kinari, Toshiyasu ; Anada, Masaru
概要:
金沢大学理工研究域機械工学系<br />目的 : ダブルツィスタでフィラメント撚糸を製造するときのバルーン形状および糸にかかる張力をスピンドルディスクの形状および撚糸条件から理論的に求める方法を提案するとともに実験により確認する.成果 :
…
1) バルーン解析により, ダブルッイスタにおける張力は無次元数Kb/m, h/bから求められる.ここでKは空気抗力に関する定数, bは糸がスピンドルを離れるところの半径, mは糸の線密度で, hはbからガイドまでのバルーン高さである.2) バルーン形成時, あるKb/m以下では糸はスピンドルディスクの円すい面に接するようにして離脱する.このとき, スピンドルディスクの頂角が大きくなるに従ってKb/mの上限値は小さくなる.3) 上記のKb/mの上限値より大きい範囲では, 糸はスピンドルディスクの上端より離脱する.このとき張力は上端の半径と同じ円柱の場合の計算値に近づく.バルーンの形状も同様である. The tension in a filament yarn twisted by two-for-one twister was calculated theoretically by use of the twisting conditions and this calculation is compared with experimental results.1) As results of analyzing the balloon theory, the yarn tension can be estimated from the nondimensional number Kb/m and h/b where K is proportional constant for air-drag, b is radius where the yarn leaves the spindle disk, m is linear density of the yarn and h is the balloon height from the point where the yarn leaves the spindle disk to the guide.2) The region of Kb/m where the yarn leaves from the conical plane decreases with increasing the apex angle of the conical spindle disk.3) For the larger value of Kb/m, the yarn takes off the upper edge of the spindle disk and tension is the same that the yarn takes off the cylindrical spindle disk that has the same radius as its upper edge.<br />出版社照会後に全文公開
続きを見る
|
||||
| 55.
論文 |
論文
|
八田, 潔 ; 喜成, 年泰 ; 新宅, 救徳 ; Hatta, Kiyoshi ; Kinari, Toshiyasu ; Shintaku, Sukenori
概要:
金沢大学理工研究域機械工学系<br />The yarn detecting system is developed using the air pressure variation caused by a yarn running thr
…
ough a pipe. The optimum detecting conditions for several kinds of yarns are examined. The processing technique is also investigated to judge a yarn passing through a pipe at higher degree of accuracy. The system is composed of a yarn detecting block, a pressure sensor and a personal computer. It can stably detect even 20 D spandex yarn that was impossible to be detected. Results obtained are as follows : (1) Pressure variation increases with the area which a yarn occupies in a pipe. For example, larger pressure variations are observed when a yarn has larger diameter, more filaments separate and a yarn has more fuzz.Spandex yarn which has large flexibility shows much larger pressure variation because it flows into a branch pipe. It also shows larger pressure oscillation caused by its extension and/or compression. (2) The supplied pressure to an ejector has little effect on the pressure variation except for a spandex yarn. The pressure variations are also emphasized when a branch pipe is tilted in the yarn entrance direction. (3) Pressure variations must be distinguished from the oscillations of the air flow in a pipe, because the pressure variation caused by a yarn passing through a pipe is very small. In the yarn detecting system, low-pass filter circuits and average processing with a personal computer are useful for increasing the accuracy to judge a yarn passing through a pipe.<br />出版社照会後に全文公開
続きを見る
|
||||
| 56.
論文 |
論文
|
新宅, 救徳 ; 喜成, 年泰 ; 八田, 潔 ; Shintaku, Sukenori ; Kinari, Toshiyasu ; Hatta, Kiyoshi
概要:
金沢大学理工研究域機械工学系<br />目的巻糸体を回転させる工程において大気圧が回転動力に及ぼす影響について, 周囲の空気をかく拝する動力と糸を解じょさせるための動力の両面から検討することを目的とした.成果かく絆動力は電動機の反力を, 解
…
じょの動力はラッシングエンド半径を測定する方法によって次の結果を得た.(1) 圧力と空気の密度はほぼ比例しているので, 周囲の空気をかく搾する動力は圧力の減少にともなって0.8乗に比例して小さくなる.(2) 減圧をするとラッシングエンド半径は広がり, これを保っための動力は増加する.バルーンの場合も同様である.減圧の小さい場合, 繊度の小さい糸では半径の広がりも小さいが, 繊度の大きい糸は広がりも大きく動力の増加割合も大きい.(3) 上記の結果, 繊度の小さい糸で巻糸体径が大きい場合は圧力を減じるとエネルギー低減効果がみられる. The relationship between the atmospheric pressure and the energy consumption was studied in the process of rotating yarn package. Both powers caused by the force of stirring the air around the yarn package and by the tension of unwinding a yarn were investigated at several kinds of atmospheric pressure. The power in order to stir the air was obtained by means of measuring the power of the motor to rotate the yarn package and the power in order to unwind a yarn was obtained by means of measuring the lashing-end radius. Results obtained are as follows : (1) The. power to stir the air around the yarn package varies proportionally to 0.8 power of the atmospheric pressure around it, because the air density is almost in proportion to the atmospheric pressure.(2) The lashing-end radius increases with reducing atmospheric pressure, so the power to keep the shape of the lashing-end curve increases. The ballooning phenomenon also has the similar tendency. Under small amount of pressure reduction, a fine yarn has a little enlarged lashing-end radius, on the contrary, a thick yarn largely increases its lashing-end radius, the power loss largely increases.(3) For the reason above, reducing atmospheric pressure takes effect for saving energy in the case of a fine yarn and of a large package.<br />出版社照会後に全文公開
続きを見る
|
||||
| 57.
論文 |
論文
|
喜成, 年泰 ; Kinari, Toshiyasu
概要:
金沢大学理工研究域機械工学系<br />出版社照会後に全文公開
|
||||
| 58.
論文 |
論文
|
新宅, 救徳 ; 喜成, 年泰 ; 堀, 純也 ; Shintaku, Sukenori ; Kinari, Toshiyasu ; Hori, Junnya
概要:
金沢大学理工研究域機械工学系<br />目的 ヤング率の異なる糸を用いてっば付ボビン上に巻糸体を形成した際の巻糸体内部の応力分布状態をモデル実験を通して求める.また, 巻糸体内部の応力によるっば付ボビンの変形について有限要素法により解析する
…
.成果 (1) 糸層がつば付ボビンの芯筒を圧縮する荷重は糸のヤング率が小さいほど大きく, その荷重増加の割合は糸層の増加に伴い小さくなる.(2) 糸層がボビンのつばを圧縮する荷重は糸のヤング率が小さいほど大きく, その荷重増加の割合は糸層の増加に伴い大きくなる.(3) 巻糸体はボビンのつばよりも芯筒を強く圧縮する.(4) 巻糸体内部応力によるつば付ボビンの変形は, 糸のヤング率が小さいほど大きく, つばのつけ根付近での変位が最も大きくなる. Stress distribution in the yarn package wound on the flanged bobbin is made clear by using the data of model experiment on which yarn packages are formed by several kinds of yarn that has different Young's modulus. They are also useful for obtaining the deformation of the flanged bobbin using the finite element analysis. The following results are obtained.(1) The smaller Young's modulus of the yarn, the larger the radial load compressing the barrel of the flanged bobbin. Increasing rate of the radial compressive stress decreases with accumulated yarn layer.(2) The smaller Young's modulus of the yarn, the larger the axial load expanding the flanges of the bobbin. Increasing rate of the axial expanding load increases with cumulated yarn layer.(3) The radial load compressing the barrel of bobbin is larger than the axial load expanding its flanges.(4) The smaller Young's modulus of the yarn, the larger the flanged bobbin deforms by internal stess in yarn package.The maximum deformation is generated near the root of its flanges.<br />出版社照会後に全文公開
続きを見る
|
||||
| 59.
論文 |
論文
|
喜成, 年泰 ; 新宅, 救徳 ; 岩木, 信男 ; 柴田, 裕史 ; Kinari, Toshiyasu ; Shintaku, Sukenori ; Iwaki, Nobuo ; Shibata, Hirofumi
概要:
金沢大学理工研究域機械工学系<br />目的 衝撃域を含む種々のひずみ速度においてPAN系炭素繊維束の応カーひずみ曲線を求あ, その機械的性質に及ぼすひずみ速度の影響を明らかにする.成果 4種類のPAN系炭素繊維について3.3×10-3s-
…
1～4.0×102s-1の範囲の6種類のひずみ速度において8tex程度の繊維束に対して引張試験を行い, 各ひずみ速度における応カーひずみ曲線を得た.いずれの試料, ひずみ速度においても炭素繊維束の応カーひずみ曲線は厳密な直線よりはやや下に凸の形状を示し, 特に降伏現象がみられずに破断した.引張弾性率はひずみ速度の対数に対して直線的に増加した.また, 破断ひずみはひずみ速度の対数に対してほぼ直線的に減少した.一方, 破断応力は実験毎にかなりのばらつきを示し, ひずみ速度の影響は小さかった.Stress-strain curves of four kinds of PAN based carbon fiber stratds whose fineness were about 8tex wereobtained at six strain rates ranging from 3.3 x 10-3s-1 to 4.0 X 102s-1. The stress-strain curves were almost straight, slightly downwards convex and showed little yielding phenomena for any specimens at any strain rates. The elastic modulus linearly increased with the logarithmic plot of strain rates. The breaking elongation linearly decreased with the logarithmic plot of strain rates. The changes of the breaking stress with strain rates was less than the scattering in each measurement.<br />出版社照会後に全文公開
続きを見る
|
||||
| 60.
論文 |
論文
|
松平, 光男 ; 財目, かおり ; Matsudaira, Mitsuo ; Zaime, Kaori
概要:
金沢大学人間社会研究域学校教育系<br />目的 かぎ針編地の代表である細編地で生じるカール現象について, その原因と考えられる弾性回復トルクに関する定量的知見を得る.成果 編地のカールは編むという基本操作時の糸の張力に比例する.この原因は
…
, 糸の張力が大きいほど編地の基本ループが短くなり, 単位長さ当たりの弾性回復トルクが増大するからである.また, 編地のカールはかぎ針の太さに逆比例する.この原因は, 針の太さが大きいほど編地の基本ループが長くなり, 単位長さ当たりの弾性回復トルクが減少するからである.前報で提案した, かぎ針編地の基本操作に関する理論の正当性が証明された. (平成4年11月9日受理) (平成5年11月2日審査終了) In order to study the curling behavior of croched fabric quantitatively, yarn tension and thickness of crochet-hook are changed and those effects on loop length and curvature of the croched fabric are investigated. Following results were obtained. Curling behavior of croched fabric is in proportion to yarn tension at basic operation of knitting. This is because that the larger the yarn tension, the shorter the unit loop length, and the recovery elastic torque per unit length becomes larger. Curling behavior of croched fabric is inversely proportional to thickness of croched-hook. This is because that the bigger the thickness, the longer the unit loop length, and the recovery elastic torque per unit length becomes smaller. Theory concerning basic operation of croched fabric proposed in the former paper8 is proved to be valid. (Received November 9, 1992) (Accepted for Publication November 2, 1993)
続きを見る
|
||||
| 61.
論文 |
論文
|
松平, 光男 ; 清水, 真由美 ; 多田, 千代 ; Matsudaira, Mitsuo ; Shimizu, Mayumi ; Tada, Chiyo
概要:
金沢大学人間社会研究域学校教育系
|
||||
| 62.
論文 |
論文
|
松平, 光男 ; Matsudaira, Mitsuo
概要:
金沢大学人間社会研究域学校教育系<br />In order to study basic phenomenon of dynamic drape of filament weaves, dependency of fabric tensi
…
on on vibrational property of the weaves based on shear deformation was investigated in detail in relation to shear property of the weaves. It was shown that the vibration damped linearly with time in the small shear deformation region (<0.035rad) at all the weight examined here (0.1-3.5kg/m). This means the vibration damps by inter-fiber and/or inter-yarn friction in the weaves. Optimum region of the weight at which the vibration continued the longest was recognized to exist experimentally and theoretically. The damping ratio correlated well with the combined parameter of shear property measured by KES system; 2HG0/√G0 and this could be considered as a arameter of vibrational property of weaves. Vibration of silk weaves lasted longer than the similar type of silk-like polyester weaves. 目的 : フィラメント織物のせん断変形に基づく揺動振動特性に及ぼす荷重の影響について, 布のせん断特性との関連で検討し, 動的ドレープ挙動の基礎知見を得る.成果 : せん断角の小さな領域 (<0.035rad) では, 振動は全ての荷重 (0.1-3.5kg/m) で時間に対して直線的に減衰し, 布内の繊維間や糸間の摩擦効果が大きく効いている.振動が最も長時間持続する最適荷重域の存在が実験的にも理論的にも明らかとなり, 振動の減衰率はKESシステムで得らせるせん断特性値の組み合わせ;2HG0/√G0と直線関係にあり, これをせん断振動特性の特性値と考えることができる.同一構造のシルクとシルクライクポリエステル織物との比較では, シルクの方が振動が長時間持続した.
続きを見る
|
||||
| 63.
論文 |
論文
|
松平, 光男 ; Matsudaira, Mitsuo
概要:
金沢大学人間社会研究域学校教育系<br />In order to study basic phenomenon of dynamic drape of filament weaves, damping behavior of fabric
…
shear vibration in the large shear deformation region (>0.035rad); that is, the region in which the vibration damped non-linearly with time, was investigated in detail in relation to shear property of the fabric. It was shown that the non-linearity increased with the shear angle and the increase was mainly caused by the increase of shear hysteresis. The damping behavior of silk filament weaves was typed in four patterns and the patterns corresponded well with the four combinations of basic mechanical parameters of shear property; G and 2HG, in the degree of changes with shear angle, obtained by KES system. Bending vibration behavior changed less than the shear vibration for four typed silk fabrics, and it was suggested that dynamic drape behavior of _??_ clothes was more related with shear property than bending property. 目的 フィラメント織物のせん断変形に基づく揺動振動特性について, せん断角の大きな (>0.035rad) 領域における減衰挙動をせん断特性との関連で検討し, 動的ドレープ挙動の基礎知見を得る.成果 振動の非直線性はせん断角が大きいほど顕著であり, これは主にヒステレシス変化によるものである.減衰率のせん断角依存性から, 絹フィラメント織物の減衰挙動は4種のパターンに分類でき, これらはKESシステムで得られる力学パラメータ, G, 2HGのせん断角による変化率の大小の組み合わせで区別される分類と対応する.衣服の動的ドレープ挙動には曲げ振動特性よりもせん断振動特性の方が効いていると思われる.
続きを見る
|
||||
| 64.
論文 |
論文
|
松平, 光男 ; Matsudaira, Mitsuo
概要:
金沢大学人間社会研究域学校教育系<br />In order to study the relationship between fabric shear and bending vibrational properties and bea
…
utiful appearance of clothes, correlation coefficients between those characteristic values and the score of beautiful appearance of moving flared skirt obtained subjectively were calculated. If the damping ratio of fabric shear vibration was smaller, the skirt was evaluated to be more beautiful. If the damping ratio of fabric bending vibration at small curvature (curved with large radius of curvature) was smaller, the skirt was evaluated to be more beautiful. There was no good correlation between the beautifulness of moving skirt and fabric weight, drape coefficient, SHINAYAKASA, and Total Hand Value.目的 : 布のせん断および曲げ振動特性から得られる特性値と, 主観評価によって求めた衣服の外観の美との関連を見い出し, 衣服の動的ドレープ挙動の美しさに寄与する要因を明らかにする.成果 : フレアスカニトの回転時の揺動の美は, 布のせん断振動特性および曲げ振動特性と多いに関連がある.せん断振動特性との関連では, せん断角の大小によらず, 振動の減衰率が小さい (よく振動する) ほど, スカートはより美しいと判定された.曲げ振動特性との関連では, 曲率の小さな領域 (大きな湾曲部) における減衰率が小さい (よく振動する) ほど, スカートはより美しいと判定された.布の自重, SHINAYAKASA, THV, ドレープ係数などとスカートの美との相関は小さかった.
続きを見る
|
||||
| 65.
論文 |
論文
|
松平, 光男 ; 久保, 昌彦 ; Matsudaira, Mitsuo ; Kubo, Masahiko
概要:
金沢大学人間社会研究域学校教育系<br />In order to evaluate fabric hand of Futon cloth objectively, primary hands for Futon cloth were se
…
lected and defined from the opinions of experts who were engaged in allied industry and distribution of Futon cloth . Five primary hands such as “SOFUTOSA”, “KOSHI-F”, “NUMERI-F”, “FUKURAMI” and “GASATSUKI” were defined for Futon cloth and they could explain 83% of the descriptions used for hand evaluation. Objective evaluation equation (DM-01) of Futon cloth from the basic mechanical characteristics of those was developed by the stepwise block residual regression method with high accuracy and small errors. Four principal components such as fabic stiffness, fabric structure, fabric softness and surface roughness were introduced from the basic mechanical characteristics of Futon cloth. 目的 ふとん地の風合いを客観評価すべく, ふとん地に長年接してきた熟練者から基本風合い用語を抽出し, 布の基本力学的特性値より算出する客観評価法の開発を試みる.成果 ふとん地の基本風合いとして, “ソフトさ”, “こし-F”, “ぬめり-F”, “ふくらみ”, “がさつき” の5個を定義することができ, 熟練者の主観評価値と力学特性値とをブロック間残差回帰方式で回帰することにより, 回帰精度が高く, 回帰誤差の小さな基本風合い客観評価式 (DM-01) を導くことができた.ふとん地の力学特性値に対して主成分分析を行ったところ, その75%を説明可能な, 布の剛さ, 構造, 柔らかさ, 表面粗さと解釈される4個の主成分が抽出された.
続きを見る
|
||||
| 66.
論文 |
論文
|
松平, 光男 ; 久保, 昌彦 ; Matsudaira, Mitsuo ; Kubo, Masahiko
概要:
金沢大学人間社会研究域学校教育系<br />Improved equations for evaluating primary hands of Futon cloth objectively (DM-02) were derived by
…
using the mechanical characteristics of compression measured at high sensitivity conditions and by adding the subjective evaluation of retailer. This equation showed higher accuracy and smaller errors than the former equations. The equation for evaluating Total Hand Value of Futon cloth objectively (DM-11) was also derived from seven parameters, namely, five primary hands, air resistance and water regain by the stepwise block residual regression method. Square term of each parameter was included in each block to find out the optimum range of those parameters. The equation obtained showed high accuracy, small errors and usefulness in practical application. 目的 ふとん地の風合いを客観評価すべく, 熟練者によって定義されたふとん地基本風合いおよびふとん地の総合的な品質を表す総合風合いを布の力学特性値から算出する客観評価法を開発する.成果 圧縮特性に高感度条件の力学特性値を用い, また主観評価に小売り担当者の判定を加えることにより, 前報に比べてより回帰精度が高く, 誤差の小さな基本風合い客観評価式 (DM-02) を誘導できた.また本式で算出する基本風合いに保温性に対応する量として通気抵抗を, および快適性に対応する量として水分率を加え, これらの2乗の値も変数として, 各基本風合いおよび物性値ごとのブロック間残差回帰方式で熟練者の主観評価値と回帰することにより, 回帰精度が高く, 誤差の小さな総合風合い客観評価式 (DM-11) を誘導できた.
続きを見る
|
||||
| 67.
論文 |
論文
|
松平, 光男 ; 木内, 富美子 ; 久保, 昌彦 ; Matsudaira, Mitsuo ; Kiuchi, Fumiko ; Kubo, Masahiko
概要:
金沢大学人間社会研究域学校教育系<br />In order to find out the characteristics of hand evaluation of Futon cloth by consumers, objective
…
evaluation equations were derived from subjective evaluation of consumers and the results were compared with those of experts. Following conclusions were obtained. Subjective evaluation of primary hand and Total Hand Value by consumers shows a little larger variation between each panel than that by experts. However, mean value of each primary hand and Total Hand Value by consumers agrees well with that by experts. Therefore, the objective evaluation equations derived from subjective evaluation of experts can be used widely for objective evaluation of primary hand and Total Hand Value (DM-02, DM-11, respectively) of Futon cloth. Although experts considers fabric shear property firstly for evaluating “SOFUTOSA”, consumers imagine fabric bending property. For the evaluation of Total Hand Value, experts think the degree of “SOFUTOSA” first of all, however, consumers judge the degree of “GASATSUKI”. 目的 消費者による基本風合いおよび総合風合いの主観評価を基に風合い客観評価式を誘導し, 熟練者による結果と比較・検討することにより, 消費者の風合い評価の特徴を見い出す.成果 (1) 消費者による基本風合い, 総合風合いの主観評価は熟練者相互よりも消費者相互の方が相関が低く, 熟練者の評価の方が若干信頼性が高い. (2) ふとん地の基本風合い, 総合風合いに対する消費者の主観評価の平均値は熟練者の平均値と一致しており, ふとん地の基本風合いおよび総合風合い客観評価には, 熟練者の主観評価を基に誘導された客観評価式 (おのおのDM-02, DM-11) を用いることができる. (3) 基本風合い「ソフトさ」の評価には, 熟練者はせん断特性を第一義的に考えているが, 消費者は曲げ特性を考えている. (4) ふとん地の風合い評価においては, 熟練者は「ソフトさ」の強弱が, 消費者では「がさつき」の強弱が最重要決定要因である.
続きを見る
|
||||
| 68.
論文 |
論文
|
張, 如全 ; 松平, 光男 ; Zhang, Ruquan ; Matsudaira, Mitsuo
概要:
金沢大学人間社会研究域学校教育系<br />The relationship between static silhouette of flared skirt and mechanical properties of fabrics wa
…
s investigated and following conclusions were obtained : 1) Hem line of flared skirt having smaller values of B, 2HB, G, and 2 HG, is apt to be rolled up. 2) Front shape of the flared skirt's silhouette depends on mechanical properties of fabrics. The effect of bending parameters ; B, 2HB, 3√B/W, √2HB/W, is larger than shearing parameters ; G, 2 HG, 3√G/W, √2HG/W. There is a high correlation between hem angle a and drape coefficient of fabric D.Correlation coefficients between the four parameters of bending vibration and hem angle are large. 3) The node number n and the average wave height h in the cross-sectional shape of the flared skirt's silhouette are strongly related to mechanical properties of fabrics. Correlation coefficient of the drape coefficient of fabric is small with the node number, however, is large with the average wave height. 4) The equation to obtain static silhouette of flared skirt was derived form mechanical properties of fabrics.
続きを見る
|
||||
| 69.
論文 |
論文
|
松平, 光男 ; 秦, 虹 ; Matsudaira, Mitsuo ; Hong, Qin
概要:
金沢大学人間社会研究域学校教育系<br />目的 織物の圧縮特性において, 圧力の増加によって織物と加圧板との間の接触状態がいかに変化するかを光学顕微鏡によって観測し, すでに提案している圧縮過程3段階分割仮説の正当性を確認する.成果 布を
…
圧縮する場合, 布と加圧板との接触繊維本数および接触繊維面積の変化は, 布圧縮過程の3段階と極めてよく対応する.圧力P<1, P=1～50, P>50gf/cm2の三つの圧力範囲をおのおの圧縮の第1, 第2, 第3段階と考えることができる.In order to confirm the three step division of fabric compressional process reported previously, contacting surface shapes of weave were observed precisely by microscope and following conclusions were obtained. The number of contacting fiber increased with pressure. As the increase was large at pressureP=1 to 50 gf/cm2and small atP>50 gf/cm2, P=50 gf/cm2could be a boundary of 2nd and 3rd step of compressional process. Contacting surface area of weave increased with pressure, and the tendency of increase agreed well with the three step division of fabric compressional process. The pressure ranges : P<1, P=1 to 50 andP>50 gf/cm2are considered to be 1st, 2nd and 3rd step of compressional process, respectively. The actual pressure q was quite larger than pressure P. q differs with each fabric samples.
続きを見る
|
||||
| 70.
論文 |
論文
|
松平, 光男 ; 宮川, まり子 ; Matsudaira, Mitsuo ; Miyakawa, Mariko
概要:
金沢大学人間社会研究域学校教育系<br />Basic mechanical properties and hand of fabric were pursued through a finishing process of the fab
…
ric woven from New Zealand Crossbred wool yarns by objective evaluation method using KES-FB system and following results were obtained. The fabric sampled from off loom showed hard and became harder after singeing stage intensile, bending, shearing and compressional properties. However, the fabric became soft greatly by the next crabbing-scouring stages. The effect of the subsequent dyeing, drying, cropping, paper pressing and blowing (decatizing) stages on the mechanical properties were small. Although primary hand values and total hand value also changed remarkably by the singeing stage, they became moderate and high rank respectively by the next crabbing-scouring stage. The large change by the singeing stage was due to the cinders which remained between fibers and they were removed completely by the next crabbing-scouring stage. Surface characteristics did not correspond well with surface “prickliness”. 目的 繊維径の太いニュージーランド産のクロスブレッドウールを用いた布の仕上処理工程の各種段階より採取した試料について, 布の力学特性及び風合いの変化を, KES-FBシステムを用いた客観評価法により追跡する.成果 力学特性では, 引っ張り, 曲げ, せん断及び圧縮の全ての特性において, 織り下ろし状態では剛く, 次の毛焼工程では更に剛くなるが, 次の煮絨, 洗絨工程では大幅に柔らかくなり, その後の染色, 乾燥, せん毛, ペーパープレス及び蒸絨工程の影響は小さいことが明らかとなった.基本風合いや総合風合いも毛焼工程によって大きく変化し, KOSHIやHARIは高く, FUKURAMIは低くなり, THVも低下するが, 次の煮絨洗絨工程によって基本風合いは適度の値となり, THVも向上することが分かった.これら力学特性や風合いが毛焼工程によって大きく変化する原因は繊維間や糸間に残存する燃えかすであり, これは後の工程で容易に除去されるため, 最終製品には全く影響を及ぼさないことが示された.布表面の “ちくちく感” は表面特性値とはあまり対応しなかった.
続きを見る
|
||||
| 71.
論文 |
論文
|
松平, 光男 ; Matsudaira, Mitsuo
概要:
金沢大学人間社会研究域学校教育系<br />新合繊ポリエステル織物の基本力学的特性および風合いの各種仕上工程による変化を追跡するため, 川端および丹羽らによる風合い客観評価法を用いて検討した.生機布の力学特性や風合いは極めて硬いが, 次のリ
…
ラックス工程で極端に柔らかくなる.これは糊抜き効果, 繊維の収縮効果および内部残留応力の緩和効果による.リラックス効果が強力すぎる場合には, 次の熱セット工程で若干硬くなることがある.続く減量加工工程では, 八分割繊維が分割されるため繊維間や糸間に有効隙間が発生し, さらにソフトになるが, 染色工程や起毛工程の影響は小さい.リラックス工程では布は厚く重くなるが, 減量加工工程では薄く軽くなる.基本風合いを変数とする判別分析により, シルキーおよびピーチスキン調新合繊織物特有な風合いゾーンのあることが示された.
続きを見る
|
||||
| 72.
論文 |
論文
|
松平, 光男 ; 秦, 虹 ; Hong, Qin ; Matsudaira, Mitsuo
概要:
金沢大学人間社会研究域学校教育系<br />目的 布の圧縮特性についてより詳細で正確な情報を得るため, 圧縮曲線の形状に関する特性値を見出す.成果 (1) 布の圧縮曲線と回復曲線はおのおの三つの段階に分けられることが判明した.圧縮の第1,
…
第3段階と回復の第1段階の曲線は直線で近似できる.圧縮の第2段階と回復の第2段階の曲線は, 指数曲線で近似できる.回復の第3段階は瞬間回復できない領域である.(2) 圧縮の第2段階の近似曲線の回帰定数は布の構造, 繊維, 糸の摩擦特性と関連している.回復過程の第2段階の近似曲線の回帰定数は布中の糸や繊維が互いの摩擦抵抗を克服する回復性と関連している.この二つの回帰定数は圧縮実験曲線の形状と最も強く関連している圧縮特性値である.(3) 圧縮特性値の主成分分析の結果によると, 第1, 第2主成分は圧縮特性の大部分の情報を含んでいる.第1主成分は布の圧縮される領域の変形量や布の柔らかさと関連している.第2主成分は布の圧縮弾性率や回復性と関連している.As the first step in a series of studies on the compressibility of fiber assemblies, here were sought a small number of parameters which can represent reasonably the compression and decompression (recovery) curves of fabrics. The followings were obtained : the compression has three characteristic stages, in the first and third of which linear approximations are valid, and in the second of which exponential ones valid ; in the recovery, the stress decays first linearly and then exponentially to arrive finally at zero leaving a strain which does not vanish instantaneously ; the increasing rate of stress in the second stage of compression may be related to fabric structure, friction between fibers and/or yarns ; the decreasing rate in the second region of recovery may be related to ability with which fibers and yarns can regain their original states against the mutual frictional restraint ; these two rates play dominant roles in the whole process. An analysis of principal component, which was done on the parameters characterizing these stages for various sample fabrics, suggests that the two principal components are representative of almost all information on the compressibility, and that first of them may be related to the compressive compliance and softness, and the second to the compressive rigidity and recoverablity.
続きを見る
|
||||
| 73.
論文 |
論文
|
秦, 虹 ; 松平, 光男 ; Matsudaira, Mitsuo ; Hong, Qin
概要:
金沢大学人間社会研究域学校教育系<br />目的 繊維集合体の一つである布の圧縮特性について, 前報で提案した圧縮過程の3段階モデルにおける各段階のパラメータの意味を明確化し, これらのパラメータの実用性を検討するため, 布の圧縮実験で求め
…
たパラメータにより, 布の分類を行う.成果 (1) 布表面を圧縮する場合には表面繊維の曲げ形式により, 布の圧縮曲線の初期部分から得た回帰係数b1はスパンあるいはフィラメントかの, 糸構造と関連している.経験式として, 圧縮第2段階曲線の回帰方程式y=a2・eb2・x+c2を提出し, 圧縮―変形曲線がこの経験式に極めて近似することを確認できた.この経験式の係数b2は圧縮変形量と関連があり, c2は圧縮線形性LCと関連がある.布圧縮の第3段階曲線の回帰係数b3は布を構成する繊維素材の圧縮特性と関連している. (2) 圧縮の各段階で得られたパラメータを用いてクラスタ分析を行うことにより, 布の分類が明確化された.スパンとフィラメントとの糸構造別に分類する場合にはb1, b2, LCが最も適切である.ウール, シルク, ポリエステルとコットンの素材別の布を分類する場合にはb2, b3, RCが最も適切である. In order to explain mechanical parameters of fabric compressional property more precisely, which were proposed in the former paper, physical meaning of those parameters was made clear. Regression constant; b1, which is obtained from 1st step of compressional curve and means initial compressional modulus of fabric, is related to yarn structure such as spun or filament. New regression equation; y=a2·exp (b2·x) +c2, is proposed for the 2nd step of compressional curve. This equation agrees better with experimental data than the former equation in which there is no auxiliary term c2. b2 is related to the amount of compressional deformation and means hardness in compression because of friction between fibers. c2 means linearity in semilogarithm coordinates and is connected with the conventional compressional parameter; LC (linearity). Regression constant; b3, which is obtained from 3rd step of compressional curve and means initial elastic modulus of fiber in lateral compression, is related to fiber material. The method of cluster analysis is carried out using three compressional parameters. For the purpose of dividing spun yarn fabrics and filament yarn fabrics, a combination of compressional parameters; b1, b2 and LC, is the best. In order to divide wool, silk, polyester and cotton fabrics, a combination of compressional parameters; b1, b3 and RC, is the best.
続きを見る
|
||||
| 74.
論文 |
論文
|
松平, 光男 ; 楊, 敏壮 ; Matsudaira, Mitsuo ; Yang, Minzhuang
概要:
金沢大学人間社会研究域学校教育系<br />In order to strdy fabric drape more precisely, a new method to obtain drape coefficient is propose
…
d and hanged shape of fabric is desdribed using trigonometrical function. Relationship between the trigonometrical function and basic mechanical parameters is also investigated. Following conclusions were obtained : 1) Fabric has its own number of node when hanged on the circular support stand anddrape coefficient of the fabric becomes smaller at the own number of node. The hanged shape of fabric becomes stable and the reproducibility of drape coefficient becomes high if the coefficient is measured using the circular support stand which is divided into two parts, equilateral polygon stand and the residual stand.2) Fabric shape is described by the equation ; r=a+bsin (nθ), and the drape coefficient obtained by the equation agreed well with the actual one. Further, the hanged shape obtained theoretically also agreed well with the actual one.3) The trigonometrical function can be regressed well with fabric basic mechanicalparameters with high accuracy.
続きを見る
|
||||
| 75.
論文 |
論文
|
楊, 敏壮 ; 松平, 光男 ; Yang, Minzhuang ; Matsudaira, Mitsuo
概要:
金沢大学人間社会研究域学校教育系<br />To investigate about fabric drapability of anisotropic fabrics, a method to decide the direction o
…
f a node isproposed, and the hanged shape of fabric is described using trigonometric function. Relationship between thetrigonometric function and basic mechanical parameters is also investigated. Following conclusions wereobtained : 1) Deciding at least one node for a fabric in the direction of larger value of B and/or 2HB in the warp or weftdirection, hanged shape of fabric becomes stable and reproducibility of measurement becomes high .2) Two-dimensional projection of fabric shape is described by the equation ; r (θ) =(a+amcos (anθ+α))+ (b+bmcos (bnθ+β)) cos (n (θ-90)), and the drape coefficient obtained by the equation;D= (4a2+2b2+2a2m+b2m-4R20) /12R20, agreed well with the actual one. Further, the hanged shape obtained theoretically also agreed well with the actual one.3) Constants in the trigonometric function can be regressed well with fabric basic mechanical parameterswith high accuracy.
続きを見る
|
||||
| 76.
論文 |
論文
|
楊, 敏壮 ; 松平, 光男 ; Yang, Minzhuang ; Matsudaira, Mitsuo
概要:
金沢大学人間社会研究域学校教育系<br />To investigate the relationship between mechanical parameters and drape shape of fabrics more prec
…
isely, simulation method was used by the trigonometric function of the drape shape. Following conclusions were obtained. The effect of mechanical parameters such as B (bending rigidity), G (shearing rigidity), 2HG (shearing hysteresis), and W (weight per unit area) on the parameters of drape shape, projected size of the drape shape (a), depth of the wave (b), node number (n), was shown quantitatively. The mechanical parameters of fabrics can be predicted from the drape shape of fabrics. W and B of fabrics influenced mostly on the projected size of the drape shape and the node number. If the node number is constant, B had almost no effect on depth of the wave, however, G, 2HG and W showed a small influence. Anisotropy of B in the warp and weft direction of fabric changed the projected size of the drape shape, and the effect was larger with the fabric having smaller W. Drape shape of fabrics changed considerably by the parameters of fabric construction such as fiber material, yarn twist, yarn.density.
続きを見る
|
||||
| 77.
論文 |
論文
|
楊, 敏壮 ; 松平, 光男 ; 秦, 黎 ; Yang, Minzhuang ; Matsudaira, Mitsuo ; Qin, Li
概要:
金沢大学人間社会研究域学校教育系<br />To evaluate dynamic drape behavior of fabrics, a testing device to measure dynamic drapability was
…
designed and new adequate parameters which can represent dynamic drapability were defined and the stability of those parameters were discussed. Following conclusions were obtained.As the revolution of fabric increases, fabric overhangs and the projected area changes in three stages.Dynamic drape increase coefficient ; Dd, which shows the degree of fabric overhanging with revolution speed, is defined as a parameter of dynamic drapability . The parameter is a slope at the 2nd stage.As the effect of airflow is larger for rotating fabrics at higher revolution speed, dynamic drape coefficent at 200 rpm;D200, is defined also as a parameter of dynamic drapability .Both the dynamic drape increase coefficient and the dynamic drape coefficient at 200 rpm showed high accuracy and reproducibility.
続きを見る
|
||||
| 78.
論文 |
論文
|
松平, 光男 ; 張, 如全 ; Matsudaira, Mitsuo ; Quan, Zhang Ru
概要:
金沢大学人間社会研究域学校教育系<br />目的 : 最終的には衣服の外観美を客観評価するため, 布の曲げ変形に基づく振動現象について詳細に検討し, 振動減衰特性を表す振動パラメータを見出す.成果 : (1) 布の振動減衰挙動は布の粘弾性抵
…
抗係数が無視でき, 繊維素材, 糸や布の構造にかかわらず, 減衰が初期振幅の約1/5に至るまでは減衰曲線は2段階の直線になる. (2) 振幅が小さい場合, 布の内部摩擦は糸―糸間および繊維―繊維間の摩擦の2つに分けられる. (3) 布の曲げ振動パラメータのうち, 第1段直線部の振幅減衰量△d1は布の純曲げ特性および糸―糸間の摩擦に関連している.第2段直線部の振幅減衰量△d2は糸の構造および繊維―繊維間の摩擦に関連している.第1段階の振動持続時間S1は減衰の主要因摩擦項が糸―糸間の摩擦から繊維―繊維間の摩擦に移行する点を表し, 布の組織や糸一糸間の接触圧力に関連している.布の全体的な曲げ振動持続時間S2は布の純曲げ特性と繊維の集合構造に関連している.In order to evaluate beautiful appearance of clothes objectively at the final end, vibrational phenomena of fabric based on bending deformation are investigated precisely and vibrational parameters which show features of vibrational damping properties of fabric are proposed. Following conclusions were obtained : Bending vibration of fabric damped linearly with time in two steps irrespective of fiber material and yarn and/or fabric structure until the amplitude becomes approximately 1/5 of the initial amplitude. This means viscoelastic effect in the fabric is neglected in the bending vibration. Frictional effect in the fabric can be divided into two parts, namely, inter-yarn friction and inter-fiber friction. In the proposed vibrational parameters, amplitude decreaseand the 1st linear-line, Δ d1 is related to pure bending property and inter-yarn friction. Amplitude decrease at the 2nd linear-line, Δ d2 is concerned with yarn structure and inter-fiber friction. Vibration duration time at the 1st step, S1 is the point at which major frictional effect changes from inter-yarnto inter-fiber friction.Total vibration duration time, S2 is related to pure bending property and fiber assembly structure.
続きを見る
|
||||
| 79.
論文 |
論文
|
張, 如全 ; 松平, 光男 ; Zhang, Ruquan ; Matsudaira, Mitsuo
概要:
金沢大学人間社会研究域学校教育系<br />In order to clarify the mechanism of the inter-yarn and/or inter-fiber frictional effect during be
…
nding vibration of fabrics, a model of fabric bending vibration was proposed. The model was studied using the samples having different degree of weft yarn density and yarn twist and following conclusions were obtained.(1) A theoretical equation for the amplitude decrease in the 1 st step of bending vibration was derived.(2) Parameters of amplitude decrease ; Δd1, Δd2 increase and those of duration period ; S1, S2 decrease with the increase of weft yarn density. Existence of the effect of yarn contacting length and contacting pressure on bending vibration was clearly shown.(3) Effect of twist was different with yarn type ; filament or spun, the effect on bending vibration was large.Existence of contacting factor was shown.
続きを見る
|
||||
| 80.
論文 |
論文
|
張, 如全 ; 松平, 光男 ; Zhang, Ruquan ; Matsudaira, Mitsuo
概要:
金沢大学人間社会研究域学校教育系<br />(1) The Theoretical equation of the amplitude decrease of the 1st step in bending vibration (=Δd1)
…
derived in the former paper was explained more precisely. In the comparison between woven and knitted fabrics, Δd1 of knitted fabrics is larger and S1 (vibration duration period of the 1st step), S2 (vibration duration period of the 1 st step and the 2nd step) are smaller. Δd2 (amplitude decrease of the 2nd step) showed similar values in both fabrics. Δd1 of spun yarn fabrics is larger than that of filament yarn fabrics, and bending vibration stops sooner in spun yarn fabrics. Δd2 showed similar values in both fabrics. By cluster analysis, it was shown that a combination of the parameters; Δd1, S2, B is best for classifying spun or filament yarn fabrics, and that a combination of the parameters; Δd2, S1, 2HB is best for classifying wool, cotton or silk fabrics.
続きを見る
|
||||
| 81.
論文 |
論文
|
張, 如全 ; 松平, 光男 ; Zhang, Ruquan ; Matsudaira, Mitsuo
概要:
金沢大学人間社会研究域学校教育系<br />In order to study the relationship between drape coefficients and bending vibrational parameters o
…
f fabrics, grey relationship analysis was applied and the degree of the relationship was investigated. Following conclusions were obtained : 1) The degree of relationship to drape coefficient was in the order of Δd1>S2>P>B>S1> Δd2 >2HB > T. The degree of Δd1 (amplitude decrease of the 1st step), S2 (vibration duration period of the 1st step and the 2nd step) was larger than that of B, 2HB and thdegree of S1 (vibration duration period of the 1st step), Δd2 (amplitude decrease of the 2nd step) was similar to that of B, 2HB. Fabric drapability could be explained by bending vibrational parameters, Δd 1, Δd2, S1 andS2, more suitably than by pure bending parameters, B, and 2HB. 2) The degree of threads in cloth P, is high to drape coefficient and the effect of P is larger than yarn twist T, on drapability. 3) The degree of relationship of threads in cloth and yarn twist to vibrational parameters is high, however, the former is larger.
続きを見る
|
||||
| 82.
論文 |
論文
|
松平, 光男 ; Matsudaira, Mitsuo
概要:
金沢大学人間社会研究域学校教育系
|
||||
| 83.
論文 |
論文
|
松平, 光男 ; Matsudaira, Mitsuo
概要:
金沢大学人間社会研究域学校教育系
|
||||
| 84.
論文 |
論文
|
岩田, 礼 ; Iwata, Rei
概要:
金沢大学人間社会研究域歴史言語文化学系<br />Ganyu is located at the northeastern corner of Jiangsu. It has been believed that the “Ru” (ent
…
ering) tone in Middle Chinese was lost in the dialect there. The linguistic survey of the Ganyu dialects in 1980 found that MC Ru tone words with voiceless or sonorant initials (Qing-Ru) were phonologically or morpho-phonologically distinguished in the Luoyang dialect, one of the southern Ganyu dialects, at the non-final positions of words. At the final positions, MC Qing-Ru has merged with Shang tone in the majority type of pronunciation, unlike the major dialects in Ganyu in which it has merged with Yin-Ping tone. Qing-Ru is also preserved in Shiqiao, northern Ganyu, and the traces of its features are found even in other Ganyu dialects. It is assumed that the tone register of Qing-Ru was lower than Shang and higher than Yin-Ping. The development of Qing-Ru tone in the Ganyu dialects is discussed and the evolutionary process of the tones is reconstructed.
続きを見る
|
||||
| 85.
論文 |
論文
|
前川, 幸次 ; 吉田, 博 ; Maegawa, Koji ; Yoshida, Hiroshi
概要:
金沢大学理工研究域環境デザイン学系<br />本研究は, コンクリートを充填した円形鋼管柱を, 落石防護柵の支柱に適用することを目的に, 数種の鋼棒, すなわち, 異型鋼棒, ボンド型PC鋼棒およびアンボンド型PC鋼棒で補強したコンクリート
…
充填鋼管はりの落錘式衝撃曲げ載荷実験を行ない, 同時に, 静的曲げ載荷実験を行なうことにより, 落石防護柵に落石が衝突したときの挙動特性と支柱のエネルギー吸収能に対する検討を行なったものである.本研究より, コンクリート充填鋼管はりの引張側に適量のアンボンド型のPC鋼棒を配置し, その両端を定着したものが耐荷力およびエネルギー吸収能とも優れていることが明らかとなった.<br />This paper presents an experimental approach for the energy absorption capacity of the concrete-filled tubular steel beams subjected to the static and impulsive loads. Twenty-eight test beams of the concrete-filled steel tube reinforced with several types of tendons, that is, reinforced bars, bonded PC bars and unbonded PC bars, are tested under staic and impulsive loads. It was confinned from the test results that both the filling up a steel tube with concrete and the well-disposing tendons were effective for increasing the strength and ductility, and thus the energy absorption capacity of the tubular steel beams.
続きを見る
|
||||
| 86.
論文 |
論文
|
冨田, 充宏 ; 前川, 幸次 ; 梶川, 康男 ; Tomida, Michihiro ; Maegawa, Koji ; Kajikawa, Yasuo
概要:
金沢大学理工研究域環境デザイン学系<br />本研究は, プレストレスにより互いに密着しているプレキャスト部材の非線形挙動を解析的に検討するため, 離散化モデルである剛体-ばねモデルの適用を試み, 曲げ実験結果と比較し, 解析の妥当性を検討
…
したものである. 解析にあたり, (1) プレキャストPC部材接合面のばね定数の取扱い, (2) グラウトによるPC鋼棒とコンクリートの付着特性の導入等のプレキャストPC部材のモデル化を行っている.<br />An assembled structure, for instance precast concrete slab or precast rock-shed roof which is made of several precast concrete members laterally tightened by prestressing steel tendons can not be regarded as a perfectly continuous structure. The reason is that such a structure acts as if the precast members were connected through the spring corresponding to prestressing steel tendons after the maximum normal stress becomes zero at the tip of contact surface between precast members. This paper presents the experimental and analytical results on the static behavior of the above-mentioned structure, for which a beam made of two precast concrete members longitudinally tighted by the prestressing is substituted. To obtain the analytical results the rigid body spring model which is suitable for non-linear problem is applied.
続きを見る
|
||||
| 87.
論文 |
論文
|
山岸, 正和 ; 玉井, 淳 ; 中谷, 敏 ; 宮武, 邦夫 ; Yamagishi, Masakazu ; Tamai, Jun ; Nakatani, Satoshi ; Miyatake, Kunio
概要:
金沢大学医薬保健研究域医学系<br />出版者照会後に全文公開
|
||||
| 88.
論文 |
論文
|
岩, 喬 ; 三崎, 拓郎 ; 坪田, 誠 ; Iwa, Takashi ; Misaki, Takuro ; Tsubota, Makoto
概要:
Simultaneous recording of epicardial activation from multiple sites during anti-arrhythmic surgery is essential to determine the location of the arrhythmic source. We formed a new sock from Presnet tubular dressing material with 87 snap
…
electrodes. Bipolar recording sites, 1.0 mm in diameter and separated 1.5 mm, are constructed of gold and attached to steel wire directly at the male snap without button. This new Sock and Snap electrode was used to record in 7 patients; 5 of WPW syndrome and 2 of non-ischemic ventricular tachycardia. Satisfactory epicardial contact was obtained in all patients without any hemodynamic change. We could get a rapid display of epicardial mapping using a computer.
続きを見る
|
||||
| 89.
論文 |
論文
|
川筋, 道雄 ; Rosenthal, Arvo ; 沢, 重治 ; 竹村, 博文 ; 藤井, 奨 ; 岩, 喬 ; Kawasuji, Michio ; Sawa, Shigeharu ; Takemura, Hirofumi ; Fujii, Susumu ; Iwa, Takashi
概要:
Transesophageal two-dimensional echocardiography (TEE) was evaluated in 14 patients who underwent coronary bypass surgery. The TEE transducer was positioned to view the left ventricular short axis at the level of the papillary
…
muscle. Global left ventricular function was assessed by measuring left ventricular end-diastolic and end-systolic area and computing the fractional area change (FAC). Regional left ventricular function was analyzed after dividing the short axis view of the left ventricle into four anatomic segments. The mean FAC was 48% after intubation, 48% after skin incision, 47% after sternotomy, and 51% after pericardiotomy. The mean FAC increased significantly to 55% 0 to 30 minutes after cardiopulmonary bypass, and was 53% at the end of the operation. In 5 patients, FAC decreased and regional wall motion abnormalities appeared around sternotomy. These abnormalities was considered due to transient myocardial ischemia. In 7 patients, a paradoxical motion of the ventricular septum occurred at closing of the sternum. TEE was performed without complication and found to be a good method for assessing global and regional left ventricular function.
続きを見る
|
||||
| 90.
論文 |
論文
|
松本, 康 ; 川筋, 道雄 ; 渡辺, 剛 ; 岩, 喬 ; Matumoto, Yasushi ; Kawasuji, Michio ; Watanabe, Go ; Iwa, Takashi
概要:
A patient with complex cardiac anomalies who developed severe respiratory insufficiency due to high pulmonary blood flow from a giant PDA was treated successfully by PDA banding. PDA-dependent heart disease causes a reduction in
…
pulmonary blood flow in many patients and is often treated by palliative shunt operation. Although the present patient had PDA-dependent heart disease, heart failure occurred due to increased pulmonary blood flow through PDA and required surgical treatment. We performed PDA banding, because it is technically simple and allows adjustment of the postoperative pulmonary blood flow according to the degree of constriction. The degree of constriction was determined according to the PaO2 value. SO2 levels of 60-70% have been used as an index of the extent of banding, but PaO2 is considered to be equally appropriate.
続きを見る
|
||||
| 91.
論文 |
論文
|
大竹, 裕志 ; 岩, 喬 ; 三崎, 拓郎 ; 渡辺, 剛 ; 向, 歩 ; 坪田, 誠 ; 近江, 三喜男 ; Ohtake, Hiroshi ; Iwa, Takashi ; Misaki, Takuro ; Watanabe, Go ; Mukai, A. ; Tsubota, Makoto ; Ohmi, Mikio
概要:
The occurrence of both tricuspid atresia and WPW syndrome is quite rare. To our knowledge, only two operated cases have been reported. In this report, a 8-year-old boy with this combination was reported. Tachycardia via the right
…
side accessory pathway was for the first time pointed out after Kreutzer's operation. Epicardial mapping showed the earliest excitation at the right free wall. When fatty tissue around this area was removed by CUSA, a large cardiac vein appeared. By holding this vein with a forceps, the delta wave disappeared temporarily. ACP seemed to be present near this vein. Permanent disappearance of the delta wave was obtained after ligation and division. Four months after surgery, he is free from tachycardia attacks.
続きを見る
|
||||
| 92.
論文 |
論文
|
渡辺, 剛 ; 三崎, 拓郎 ; 松永, 康弘 ; 市橋, 匠 ; 坪田, 誠 ; 渡辺, 洋宇 ; 岩, 喬 ; Watanabe, Go ; Misaki, Takuro ; Matsunaga, Yasuhiro ; Ichihashi, Takumi ; Tsubota, Makoto ; Watanabe, Yoh ; Iwa, Takashi
概要:
Two cases of atrial tachyarrhythmias with atrial flutter requiring cryosurgical treatment are reported. In two cases, preoperative electrophysiological studies revealed supraventricular reentrant tachyarrhythmias during atrial flutter and
…
showed enhanced conduction through the AV node that conducted atrial impulses rapidly to the ventricle. Based on intraoperative endocardial mapping, the earliest excitation site was localized along the AV node and His bundle during supraventricular tachyarrhythmias in one case. The cryosurgical treatment was administered at Koch's triangles and in one case additionally at coronary sinus. After the operation, supraventricular tachyarrhythmias were not inducible and no clinical recurrences have occurred. Normal atrioventricular conduction was preserved in two cases. We concluded that cryosurgical treatment is useful for the treatment of the atrial tachyarrhythmias.
続きを見る
|
||||
| 93.
論文 |
論文
|
渡辺, 進一郎 ; 渡辺, 洋宇 ; 清水, 淳三 ; 坪田, 誠 ; 徳楽, 正人 ; 龍沢, 泰彦 ; 荒能, 義彦 ; 岩, 喬 ; Watanabe, Shin-ichiro ; Watanabe, Yoh ; Shimizu, Junzo ; Tsubota, Makoto ; Tokuraku, Masato ; Tatsuzawa, Y. ; Arano, Y. ; Iwa, Takashi
概要:
A 62-year-old woman with adenoid cystic carcinoma which recurred 10 years after sleeve middle lobectomy was reported. Completion pneumonectomy was performed and her postoperative course was uneventful. If pulmonary function permits,
…
reoperation for recurrent lung cancer should be attempted.
続きを見る
|
||||
| 94.
論文 |
論文
|
清水, 淳三 ; 渡辺, 洋宇 ; 林, 義信 ; 小田, 誠 ; 岩, 喬 ; 高松, 秀行 ; 藤村, 政樹 ; 水上, 勇治 ; Shimizu, Junzo ; Watanabe, Yoh ; Hayashi, Yoshinobu ; Oda, Makoto ; Iwa, Takashi ; Takamatsu, Hideyuki ; Fujimura, Masaki ; Mizukami, Yuji
概要:
Leiomyoma of the trachea and bronchus is a rare tumor. Only 45 cases have been reported in the Japanese literature. We report here a case of leiomyoma of the intermediate bronchus which was successfully operated on. A 45-year-old man
…
suffered from a repeated episode of pneumonia in the right lower lobe. Bronchoscopy revealed a polypoid mass on the intermediate bronchus. The diagnosis of leiomyoma was made by bronchoscopic biopsy. Sleeve resection of the intermediate bronchus including the tumor and end-to-end anastomosis was performed. His postoperative course was uneventful and bronchoscopic findings showed clear healing of the anastomotic site. The resected specimen contained a tumor with smooth surface having protrusion into the bronchial lumen with 6 x 5 x 4 mm in size. The final pathological diagnosis was leiomyoma of the intermediate bronchus with no evidence of malignancy.
続きを見る
|
||||
| 95.
論文 |
論文
|
清水, 淳三 ; 渡辺, 洋宇 ; 小田, 誠 ; 林, 義信 ; 渡辺, 進一郎 ; 龍沢, 泰彦 ; 岩, 喬 ; Shimizu, Junzo ; Watanabe, Yoh ; Oda, Makoto ; Hayashi, Yoshinobu ; Watanabe, Shin-ichiro ; Tatsuzawa, Y. ; Iwa, Takashi
概要:
This report analyzes the operative indication for the small lesion of advanced lung cancer. The subjects consisted of 25 patients with T1N2 lung cancer, one T1N3, four T1M1 and five small lung cancer lesion with dissemination, which was
…
regarded as the small lesion of advanced lung cancer. The cumulative 5-year survival rate after operation for 25 patients with T1N2 lesion was 30.6%. Of 25 patients, 18 were selected patients who underwent a curative operation with a 5-year survival of 37.0%. In the remaining 7 patients, who underwent a non-curative operation, 5-year survival was 0%. As to mediastinal lymph node involvement, it is possible that metastasis to more than two levels of mediastinal lymph nodes or to the upper mediastinal lymph nodes (#1-3) are poor prognostic factors in T1N2 lesion. Another group except T1N2 could not be the comparative materials because they were much fewer in number. But T4 cases associated with small lung cancer lesion with dissemination and T1M1 cases associated with intrapulmonary metastasis encountered at thoracotomy could be expected to have a long-term survival. We conclude that T1N2 patients with metastasis to within one level of mediastinal lymph node, which will possibly have a curative operation, is a proper operative indication for the small lesion of advanced lung cancer.
続きを見る
|
||||
| 96.
論文 |
論文
|
竹村, 博文 ; 川筋, 道雄 ; 澤, 重治 ; 藤井, 奨 ; 岩, 喬 ; Takemura, Hirofumi ; Kawasuji, Michio ; Sawa, Shigeharu ; Fujii, Susumu ; Iwa, Takashi
概要:
Ten patients with solitary stenosis of the left main coronary artery underwent coronary artery bypass grafting. All patients suffered from unstable angina and were in NYHA class III or IV. Two of them required intravenous infusion of
…
nitroglycerin preoperatively. The degree of stenosis of the left main coronary artery was 75% in 3 patients, 90% in 5, 95% in one and total obstruction in the other one. Five patients received saphenous vein grafts to the LAD and circumflex artery and the other 5 patients received IMA grafts to the LAD and saphenous vein grafts to the circumflex arteries. In 2 patients with 75% stenosis of the left main coronary artery we found narrow internal mammary artery grafts, the so called "string sign", on postoperative angiography. Although several causes of string sign were proposed previously, we supposed that the main cause of the "string sign" was the competition for flow between the IMA graft and the native coronary artery or grafted coronary artery. Postoperatively, all patients showed improvements in cardiac function and were in NYHA class I. No evidence of ischemic findings was found in postoperative exercise stress tests.
続きを見る
|
||||
| 97.
論文 |
論文
|
手取屋, 岳夫 ; 川筋, 道雄 ; 沢, 重治 ; 榊原, 直樹 ; 岩, 喬 ; 滝, 淳一 ; Tedoriya, Takeo ; Kawasuji, Michio ; Sawa, Shigeharu ; Sakakibara, Naoki ; Iwa, Takashi ; Taki, Jun-ichi
概要:
The sequential change of left ventricular function during exercise and recovery after exercise was assessed in 50 patients who had undergone coronary bypass surgery before and after the operation by means of continuous ventricular
…
function monitoring system (VEST). Cardiac response was divided into 4 types with respect to the profiles of the left ventricular ejection fraction during exercise. Type A continued to increase; type B initially increased but decreased in severe exercise stages; type C did not change during exercise; type D continued to decrease. Most patients showed type C or D before surgery but showed type A after surgery. 9 patients with occluded grafts or ungrafted coronary arteries showed type B, C or D. Two patients with extended infarction and poor left ventricular function showed type C after surgery. In recovery period after exercise, the ejection fraction showed an overshoot. The mean ratio of peak ejection fraction during recovery to ejection fraction at rest increased from +62 +/- 12% before operation to +68 +/- 16% after operation (p less than 0.05). The recovery time after exercise was decreased from 195 sec before operation to 98 sec after operation (p less than 0.01). VEST revealed response of left ventricular function during exercise and recovery after exercise as far as detail abnormalities.
続きを見る
|
||||
| 98.
論文 |
論文
|
川筋, 道雄 ; 榊原, 直樹 ; 渡辺, 洋宇 ; 北村, 昭洋 ; Kawasuji, Michio ; Sakakibara, Naoki ; Watanabe, Yoh ; Kitamura, Akihiro
概要:
金沢大学医薬保健研究域医学系<br />A new vein holder for a side-to-side anastomosis between a vein graft and the coronary artery is des
…
cribed. The holder is consisted of two nerve hooks, and those distance is adjusted. The technique for creating the diamond anastomosis is also described.
続きを見る
|
||||
| 99.
論文 |
論文
|
三崎, 拓郎 ; 大竹, 裕志 ; 松本, 勲 ; 松永, 康弘 ; 渡辺, 洋宇 ; Misaki, Takuro ; Ohtake, Hiroshi ; Matsumoto, Isao ; Matsunaga, Yasuhiro ; Watanabe, Yoh
概要:
金沢大学医薬保健研究域医学系<br />To enhance the utility of epicardial mapping in the intraoperative determination of the location of
…
the arrhythmic source, we developed a new balloon electrode covered with Presnet-tubular dressing material including 46 snap electrode recording sites. The bipolar recording sites, 1.0 mm in diameter and spaced at intervals of 1.5 mm, are constructed of gold and directly attached steel wire. This new balloon electrode was effective intraoperative determination of the lesion in 2 patients one with Wolff-Parkinson-White syndrome and the other with ventricular tachycardia.
続きを見る
|
||||
| 100.
論文 |
論文
|
大竹, 裕志 ; 渡辺, 剛 ; 向井, 恵一 ; 三崎, 拓郎 ; 松永, 康弘 ; 松本, 勲 ; 川筋, 道雄 ; 渡辺, 洋宇 ; Ohtake, Hiroshi ; Watanabe, Go ; Mukai, Kei-ichi ; Misaki, Takuro ; Matsunaga, Yasuhiro ; Matsumoto, Isao ; Kawasuji, Michio ; Watanabe, Yoh
概要:
金沢大学医薬保健研究域医学系<br />To investigate whether the efficacy of laser ablation therapy is affected by the color of the target
…
organ, we irradiated 9 canine hearts through the epicardium with Nd-YAG laser (200 J, 400 J), and compared coagulated myocardial volume in the beating heart (reddish) with that in the stopped heart (whitish) infused with 0 degrees C saline (cardioplegic model) via a coronary artery. The coagulated myocardial volume of the beating heart was significantly larger than that of the arrested heart, indicating the YAG laser energy is absorbed by red myocardium to greater extent than it is by white myocardium. In conclusion, during intraoperative laser ablation, the presence or absence of blood in cardiac tissue is an important factor for safe irradiation.
続きを見る
|
