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| 1.
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論文
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土成, 昭弘 ; 保木井, 利之 ; 下林, 修 ; 金岡, 千嘉男
概要:
In a permeable MgO ceramic containing TiO_2 and Al_2O_3 as matrix MgO ・ Al_2O_3-2MgO・TiO_2 solid solutions were detected
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and no Al_2O_3・TiO_2 was observed. Therefore, the solid state reaction among MgO, TiO_2 and Al_2O_3 with excess MgO was studied at various firing temperatures. The formation mechanism of MgO・Al_2O_3-2MgO・TiO_2 solid solutions was studied from the results of interface reactions between MgO-TiO_2 and MgO-Al_2O_3. MgO・Al_2O_3-2MgO・TiO_2 solid solutions were detected at 1573-1673 K and increased with the firing temperature. 2MgO・TiO_2 was formed in the system MgO-TiO_2, but was not produced in the system MgO-TiO_2-Al_2O_3, because the amount of Mg diffusion at the interface of aggregate and matrix additives was not enough due to the large aggregate size of MgO. MgO・Al_2O_3 and 2MgO・TiO_2 formed at the interface between MgO-TiO_2 and MgO-Al_2O_3 decreased with the firing time at 1873 K. On the other hand, MgO・Al_2O_3-2MgO・TiO_2 solid solutions increased. Mg was recognized in the matrix without addition of MgO as a matrix. Al diffused in the layer of MgO-TiO_2, in opposition Ti diffused in the layer of MgO-Al_2O_3 by EPMA analysis. From the above results, the formation mechanism of a MgO・Al_2O_3-2MgO・TiO_2 solid solution was proposed; (1) Mg diffusion at the interface of MgO aggregate and matrix additives, (2) formation of MgO・TiO_2 and MgO・Al_2O_3, (3) formation of 2MgO・TiO_2 due to the reaction with MgO・TiO_2 and MgO, (4) reaction of the solid solution with MgO・Al_2O_3 and 2MgO・TiO_2. In the reactions between MgO・TiO2 and MgO-Al_2O_3 the product layer of MgO・Al_2O_3-2MgO・TiO_2 solid solution increased as the firing time increased. The diffusion coefficient of Mg was about 4.8×10^<-7>(cm^2/s), in a good agreement with that of Mg which was reported.
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| 2.
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Somei, Masanori ; Yamada, Fumio ; Yamazaki, Yoshihisa ; Shinkura, Akiko
概要:
We developed a novel synthesis of 2-aminoindan derivatives, having a 2-methyl-1-propenyl group at the 1-position and oxygen functional groups in the benzene ring, in 8 or 9 steps from vanillin.
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| 3.
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edited with translation and explanatory notes by S.D. Joshi and J.A.F. Roodbergen
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| 4.
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Murata, Yasue ; Kinoshita, Hideki ; Inomata, Katsuhiko
概要:
The syntheses of 3,4-disubstituted 2-tosylpyrroles and 5-tosyl-1,5-dihydro-2H-pyrrol-2-ones were accomplished via 3,4-disubstituted 2-iodo-5-tosylpyrroles starting from ethyl 3,4-disubstituted 2-pyrrolecarboxylates.
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| 5.
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Somei, Masanori ; Hayashi, Hiroyuki ; Ohmoto, Shinobu
概要:
金沢大学大学院自然科学研究科生理活性物質科学<br />金沢大学薬学部<br />Indigo was converted to 2,2′-bisindole by the direct reduction with zinc in ace
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tic acid and acetic anhydride under argon or hydrogen atmosphere. Reduction with tin and iron afforded 3-acetoxy-2,2′-bisindole predominantly. Useful building blocks such as 1-acetyl-2,3-dihydro-, 3-acetoxy-3′-acetyl-, and 3-acetoxy-1,3′-diacetyl-2,2′-bisindoles were also produced depending on metal and reaction conditions.
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| 6.
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von Gerhard Timpe
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| 7.
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hrsg. von Karl-Heinz Fingerhut, Eduard Haueis und Otfried Hoppe
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| 8.
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Deutsche Chemische Gesellschaft ; Beilstein, Friedrich Konrad, 1838-1906 ; Richter, Friedrich, 1896-1961
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| 9.
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論文
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Suzuki, Masatatsu ; Sugisawa, Toshiharu ; Uehara, Akira
概要:
Two dinuclear cobalt(II,II) complexes, [Co2(tpdp)(CH3COO)](ClO4)2·0.5H2O (1) and [Co2(tmdp)(CH3COO)](ClO4)2·H2O (2), wer
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e prepared, where Htpdp and Htmdp are 1,3-bis[bis(2-pyridylmethyl)amino]-2-propanol and 1,5-bis[bis(2-pyridylmethyl)amino]-3-pentanol respectively. Their electronic spectral and magnetic data revealed that 1 and 2 are five-coordinate in the high-spin state, in the same manner as [Co2(bpmp)(CH3COO)]2+ (3) (Hbpmp=2,6-bis[bis(2-pyridylmethyl)aminomethyl]-4-methylphenol). The complexes reacted with molecular oxygen to form μ-peroxo complexes in dichloromethane and acetonitrile. The oxygen affinity of the complexes decreased in the order of 3>2>1. The relationships between the oxygen affinities and (1) the donor abilities of dinucleating ligands, (2) the energies of the charge-transfer bands (O22− to Co3+) of the μ-peroxo complexes, and (3) the redox potentials of the Co3+–O2−–Co3+/Co3+–O22−–Co3+ couple indicated that a steric effect arising from the dinucleating ligands contributes significantly to the oxygen affinities of the complexes.
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| 10.
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United States. Congress. Senate. Select Committee on Small Business. Subcommittee on Monopoly
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| 11.
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Ikeda, Masazumi ; Ohtani, Shinji ; Okada, Michiyo ; Minakuchi, Emi ; Sato, Tatsunori ; Ishibashi, Hiroyuki
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| 12.
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論文
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Somei, Masanori ; Kodama, Atsushi
概要:
金沢大学大学院自然科学研究科生理活性物質科学<br />金沢大学薬学部
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| 13.
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図書
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Алексей Каплер
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| 14.
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図書
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Gustav Ehrismann
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| 15.
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Tsutiya, Ryokichi
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| 16.
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Tsutiya, Ryokichi
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| 17.
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Sumiyoshi, T. ; Kido, H. ; Sakamoto, H. ; Urasaki, K. ; Suzuki, K. ; Yamaguchi, N. ; Mori, Hirofumi ; Shiba, Kazuhiro ; Yokogawa, K. ; 柴, 和弘
概要:
金沢大学疾患モデル総合研究センター<br />An in vivo receptor binding technique was applied to evaluate the affinities of risperidone and h
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aloperidol for dopamine-D2 receptors (D2) and serotonin-5-HT2 receptors (5-HT2) in rat brain with [3H]YM-09151-2 and [3H]ketanserin as selective ligands. Radioactivities were obtained in the striatum, frontal cortex, and cerebellum of the rats treated with the ligands. Time course study of receptor occupancy at 25 to 250 min after single doses of the drugs (1 mg/kg, IP) showed higher 5-HT2 occupancy in the frontal cortex and lower D2 occupancy in the striatum by risperidone than by haloperidol. Dose-response analysis of receptor occupancy revealed risperidone demonstrated higher binding affinity for 5-HT2 than for D2, while the reverse was observed with haloperidol. It appeared that risperidone (1 mg/kg, IP), but not haloperidol (1 mg/kg, IP), demonstrated regional selectivity in D2 occupancy favouring frontal cortex more than the striatum. That risperidone displayed a higher ratio of 5-HT2 to D2 in occupancy than haloperidol is in agreement with the previous findings obtained in vitro. © 1994.
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| 18.
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Sugimoto, Hideki ; Nagayama, Toshihiko ; Maruyama, Sachihito ; Fujinami, Shuhei ; Yasuda, Yuichi ; Suzuki, Masatatsu ; Uehara, Akira
概要:
A new dinucleating ligand containing a sterically bulky imidazolyl group, Ph-Htidp (N,N,N′,N′-tetrakis[(1-methyl-4,5-dip
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henyl-2-imidazolyl)methyl]-1,3-diamino-2-propanol), and its μ-alkoxo-diiron(II) complexes [Fe2(Ph-tidp)(RCO2)](ClO4)2, (RCO2 = C6H5CO2 (1), C6F5CO2 (2), CF3CO2 (3), and C2H5CO2 (4)), were synthesized. The structure of complex 1 was determined by X-ray crystallography. Complex 1 crystallizes in the monoclinic space group P21/c with a = 13.464(2), b = 19.223(4), c = 31.358(4) Å, β = 92.84(2)°, and Z = 4. The complex has a doubly-bridged structure with μ-alkoxo of Ph-tidp and μ-benzoate; the two iron centers have a distorted five-coordinate structure with N3O2 donor set. All the complexes showed fairly good reversible oxygenation below −30 °C in CH2Cl2, which was monitored by UV-vis and NMR spectroscopies, and dioxygen up-take measurements. Introduction of 4,5-diphenyl substituents into 2-imidazolyl group stabilized the μ-peroxo diiron species against irreversible oxidation, just as introduction of 6-methyl substituent into 2-pyridyl group did. Phenyl substituents appear to weaken the electron donor ability of a dinucleating ligand to stabilize divalent oxidation state of iron and to form a hydrophobic cavity for a O2 binding site, which would suppress the irreversible oxidation and facilitate the reversible oxygenation. Dioxygen affinities of the Ph-tidp and Me4-tpdp diiron(II), and the tpdp and bpmp dicobalt(II) complexes were measured, [Fe2(Me4-tpdp)(RCO2)]2+ (RCO2 = C6H5CO2 and RCO2 = CF3CO2) and [Co2(L)(RCO2)]2+ (L = tpdp, RCO2 = CH3CO2, and L = bpmp, RCO2 = C6F5CO2, and CF3CO2), where Me4-tpdp, tpdp, and bpmp are N,N,N′,N′-tetrakis[(6-methyl-2-pyridyl)methyl]-1,3-diamino-2-propanolate, N,N,N′,N′-tetrakis(2-pyridylmethyl)-1,3-diamino-2-propanolate, and 2,6-bis[bis(2-pyridylmethyl)aminomethyl]-4-methylphenolate, respectively. Within a series of the Ph-tidp diiron(II) complexes, dioxygen affinity is well correlated with electron donor ability of bridging carboxylates (1 (C6H5CO2) > 2 (C6F5CO2) > 3 (CF3CO2)). In contrast to the above trend, dioxygen affinities of the Ph-tidp complexes are lower than those of the Me4-tpdp complexes, although electron donor abilities of the Me4-tpdp complexes are weaker than those of the Ph-tidp complexes. Significant enhancement of dioxygen affinity was observed for both iron and cobalt complexes with 2,6-bis(aminomethyl)phenolate bridging skeleton compared to the complexes with a 1,3-diamino-2-propanolate bridging one. Thermodynamic study suggested that the observed enhancement is mainly attributable to a favorable entropy effect along with a steric effect.
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| 19.
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図書
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| 20.
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Ihara, Yoshinori ; Satake, Yasuhiro ; Fujimoto, Yumi ; Senda, Hitoshi ; Suzuki, Masatatsu ; Uehara, Akira
概要:
The structures of two diaquabis(N,N-dialkylethylenediamine)nickel(II) chlorides ([Ni(H2O)2(diamine)2]Cl2·nH2O) were dete
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rmined by X-ray crystallographic studies, where diamine is N,N-dimethylethylenediamine(NN-dmen) or N,N-diethylethylenediamine (NN-deen). Both complexes are trans and crystallize in the monoclinic space group P21⁄n. The unit cell parameters of the NN-dmen complex, NiCl2C8N4O2H32, are a=7.531(1), b=13.092(1), c=9.591 Å, β=107.76(1)°, and Z=2, and those of the NN-deen complex, NiCl2C12N4O2H36, are a=9.154(1), b=8.692(1), c=12.395(2) Å, β=104.46(1)°, and Z=2. In trans-[Ni(H2O)2(NN-dmen)2]Cl2·2H2O and trans-[Ni(H2O)2(NN-deen)2]Cl2, the Ni–NMe2 and Ni–NEt2 bond distances (2.183 and 2.271 Å) are much longer than the Ni–NH2 distances (2.078 and 2.064 Å), forming tetragonally distorted octahedrons with four close in-plane neighbors(N2O2) and two remote axial ones(N2). It is apparent that this distortion originates from the steric requirement of N-substituted groups. Such a distortion significantly affects the electronic spectra of these complexes.
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| 21.
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論文
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Iwasa, Junko ; Miyoshi, Ken-ichi
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| 22.
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herausgegeben von Wolf-Hartmut Friedrich und Walther Killy
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| 23.
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図書
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text, translation and notes by J.A.F. Roodbergen ; edited by S.D. Joshi
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| 24.
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論文
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Ihara, Yoshinori ; Tsuchiya, Ryokichi
概要:
The following ten nickel(II) complexes with meso- or dl-1,2-diphenyl-1,2-ethanediamine (abbreviated as meso-stien and dl-stien, respectively) were prepared, and their thermal behavior was investigated in the
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solid phase: [Ni(meso-stien)2]X2 (X=Cl, Br, I, NO3, or ClO4), [Ni(dl-stien)2]X2 (X=I or ClO4), and [Ni(H2O)2(dl-stien)2]X2 (X=Cl, Br, or NO3). The square planar bis(dl-stien) complex chloride, bromide, and nitrate obtained by thermal dehydration of their respective octahedral diaqua complexes were found by various techniques to be transformed, upon further heating, to the octahedral diacido bis(dl-stien) complexes. The complexes containing dl-stien have a stronger tendency to show such structural transformations than those containing meso-stien. The reason for this difference is discussed.
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| 25.
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translated from the original Sanskrit with introduction and notes by Kamaleswar Bhattacharya ; text critically edited by E.H. Johnston and Arnold Kunst
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| 26.
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図書
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par le Maître indien Candrakīrti ; [traduit par] Cristina Anna Scherrer-Schaub
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| 27.
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von F. Endemann
目次情報:
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| 28.
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図書
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im Auftrag des Organisationskomitees herausgegeben von Ernst Meissner
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| 29.
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図書
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herausgegeben von Georg Jäger, Alberto Martino, Friedrich Sengle
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| 30.
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Āryānāgārjunapādaiḥ Rajñe Sātavāhanāya likhitaḥ ; pratisaṃskartā Hindīrūpāntarakāraḥ, sampādakaśca Svāmī Dvārikādāsaśāstrī
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| 31.
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tasyāḥ Āṅglabhāṣāyā'nuvādakaḥ Sātakarimukharjī ; Hindībhāṣāyā'nuvādakaśca Svāmī Dvārikādāsaśāstrī
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| 32.
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translations and studies by Chr. Lindtner
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| 33.
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図書
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edited by Heramba Chatterjee Sastri
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| 34.
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by Kenneth K. Inada
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| 35.
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| 36.
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谷口健英
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| 37.
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Nāgārjuna ; introduction, Sanskrit text, English translation, and annotation, David J. Kalupahana
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| 38.
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Murahashi, Tsuyoshi ; Kizu, Ryoichi ; Kakimoto, Hitoshi ; Toriba, Akira ; Hayakawa, Kazuichi
概要:
Diesel-engine exhaust and airborne particulates were collected in downtown and suburban areas and five mutagenic nitroarenes (2-nitrofluoranthene (NF), 1-, 2- and 4-nitropyrenes (NPs) and 6-nitrochrysene (NC) in benzene-ethanol extracts
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were determined by high-performance liquid chromatography with chemiluminescence detection. 1- and 4-NPs and 6-NC were found in diesel-engine exhaust particulates, however, 2-NF and 2-NP were not detected. On the other hand, all five nitroarenes were found in airborne particulates. Diurnal concentration patterns of 4-NP and 6-NC in the downtown area were similar to the pattern of 1-NP, but the patterns of 2-NF and 2-NP were different from the pattern of 1-NP. These results strongly suggested that 2-NF and 2-NP are formed in the atmosphere. Of the five nitroarenes, 2-NF had the largest suburban / downtown concentration ratio. 2- and 4-NPs and 6-NC all showed larger ratios than did 1-NP. These results showed that 2-NF and 2-NP were formed in the atmosphere, but that the secondary formation of 4-NP and 6-NC were not known. Taking mutagenic activity and the atmospheric concentration into consideration, the mutagenic contribution of 2-NF was estimated to be comparable with that of 1-NP in the downtown area, and more than that of 1-NP in the suburban area. This result suggested that the mutagenic contribution of the minor nitroarenes formed in urban air might not be negligible.
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| 39.
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edited by C. Robert Helms and Bruce E. Deal
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| 40.
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Yoshimura, Osamu ; Ueda, Kazumasa ; Yamamoto, Yoshikazu
概要:
2-(2-Thiazolylazo)-4-methoxyphenol (TAMP) forms a brownish 2:1 complex with iron(ll) in the presence of ascorbic acid; t
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he complex has a characteristic absorption at 784 nm in chloroform. By utilizing this peculiar absorption, selective spectrophotometry determination of iron has been developed. The optimum pH for iron extraction lies between 5.0-9.3 and Beer's law holds up to 5.0 ng/ml of iron. Many type of ions are tolerable. The method was successfully applied to the determination of iron in river waters. The extraction constant of iron(ll) complex was log Kex=-2.50±0.12 and the extraction mechanism was kinetically investigated. The complexation rate was first-order with respect to iron(ll) and TAMP concentrations and independent of ascorbic acid concentration. From these results, the major extraction rate-determining step was concluded to be a 1:1 complexation reaction between iron(ll) and dissociated TAMP. Kinetic data and activation parameters for the first-order reaction were determined and discussed. © 1988, The Japan Society for Analytical Chemistry. All rights reserved.
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| 41.
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Kawashima, Hiroshi
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| 42.
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editus iussu et auctoritate consilii ab academiis societatibusque diversarum nationum electi
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| 43.
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von Otto Zuckerkandl . von A. von Frisch . von P. Fürbringer
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| 44.
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図書
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compiled by D.J. Finney ... [et al.] ; with an introduction by E.S. Pearson
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| 45.
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bearbeitet von J. Billiter ... [et al.]
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| 46.
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Trautl Brandstaller (Hg.)
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| 47.
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Binding, Karl, 1841-1920
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| 48.
視聴覚資料 |
ＡＶ
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Franz Schubert
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| 49.
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Sakurai, Ikuo ; Suzuki, Harumi ; Shimizu, Sakae ; Yamamoto, Yuzuru
概要:
It was found that Macrophoma commelinae (IFO 9570) had an ability to transform 5-acetyl-4-methoxy-6-methyl-2-pyrone (1) to 4-acetyl-3-methoxy-5-methylbenzoic acid (2). This biotransformation was investigated using 13C- and 14C-labeled
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compounds. It is likely that 2 is formed by condensation of the added 2-pyrone and a catabolic pyruvate.
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| 50.
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谷野, 淳
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