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| 1.
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Yamamoto, Masayoshi ; Matsui, Masao ; Igarashi, Shuichi ; Yoshioka, Mitsuo ; Hayakawa , Hironobu ; Kitagawa, Sadaharu ; 山本, 政儀 ; 松井, 正夫 ; 五十嵐, 修一 ; 吉岡, 満夫 ; 早川, 博信 ; 北川, 貞治
概要:
金沢大学環日本海域環境研究センター<br />The concentrations of 239Pu and 137Cs due to fall-out, and 60Co originating from the nuclear powe
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r reactor in the sediments sampled at Urazoko Bay, Fukui Pref., Japan, were determined and their correlation with the particle size or the amount of glycerol adsorbed on the sediments as a measure of surface area of the sediment particles were examined. By the size segregation of sediment, the contents of 239Pu, 137Cs and 60Co were found to reach to the highest value in the fraction below 37 μm in diameter. The concentrations of these radionuclides for each size fraction were directly proportional to the amount of glycerol adsorbed on the sediment particles. Based on these facts, the normalization of the concentration of these artificial radionuclides by the amount of adsorbed glycerol was attempted. For the fraction below 0.5 mm in diameter of various sediments collected at around Urazoko Bay during 1975-1977. It was confirmed that the contents of 239Pu and 137Cs per unit amount of adsorbed glycerol were nearly constant, respectively. Furthermore, the pollution characteristics of 60Co in the sediments, such as the distribution and the accumulation, was clearly estimated by using such normalization.
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| 2.
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大場, 達之 ; 菅原, 久夫 ; Ohba, Tatsunori ; Sugawara, Hisao
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| 3.
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渡邊, 定元 ; Watanabe, Sadamoto
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| 4.
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長井, 幸雄 ; 河野, 昭一 ; Nagai, Yukio ; Kawano, Shoichi
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初島, 住彦 ; Hatsusima, Sumihiko
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| 6.
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田村, 道夫 ; Tamura, Michio
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| 7.
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Tawada, Shinjun ; 多和田, 真淳
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| 8.
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Naruhashi, Naohiro ; 鳴橋, 直弘
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| 9.
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志村, 義雄 ; Shimura, Yoshio
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| 10.
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Kurita, Masahide ; 栗田, 正秀
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| 11.
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鳴橋, 直弘 ; 豊島, 義明 ; Naruhashi, Naohiro ; Toyoshima, Yoshiaki
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| 12.
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南, 敦 ; Minai, Atsushi
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里見, 信生 ; Satomi, Nobuo
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| 14.
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里見, 信生 ; Satomi, Nobuo
概要:
p.12, p.33, p.35, p.37, p.43, p.52
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| 15.
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吉田, 博 ; 前川, 幸次 ; Yoshida, Hiroshi ; Maegawa, Koji
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金沢大学理工研究域環境デザイン学系
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| 16.
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村北, 和広 ; 岩瀬, 孝明 ; 小林, 弘明 ; 児玉, 吉明 ; 桜井, 潤司 ; 土屋, 和弘 ; 岩, 喬 ; Murakita, Kazuhiro ; Iwase, Takaaki ; Kobayashi, Hiroaki ; Kodama, Yoshiaki ; Sakurai, Junji ; Tsuchiya, Kazuhiro ; Iwa, Takashi
概要:
金沢大学医薬保健研究域医学系
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| 17.
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舩木, 芳則 ; 横井, 克己 ; 船田, 隆 ; 羽柴, 厚 ; 大平, 政人 ; 村中, 幸夫 ; 永井, 晃 ; 三崎, 拓郎 ; 岩, 喬 ; Funaki, Yoshinori ; Yokoi, Katsumi ; Funada, Takashi ; Hashiba, Atsushi ; Ohira, Masato ; Muranaka, Yukio ; Nagai, Akira ; Misaki, Takuro ; Iwa, Takashi
概要:
金沢大学医薬保健研究域医学系
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| 18.
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桜井, 潤司 ; 佐藤, 博文 ; 三崎, 拓郎 ; 坂東, 健 ; 飯田, 茂穂 ; 村北, 和広 ; 岩, 喬 ; Sakurai, Junji ; Sato, Hirofumi ; Misaki, Takuro ; Bando, Takeshi ; Iida, Shigeho ; Murakita, Kazuhiro ; Iwa, Takashi
概要:
金沢大学医薬保健研究域医学系
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| 19.
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吉田, 千尋 ; 坂東, 健 ; 永井, 晃 ; 新谷, 寿久 ; 宮下, 徹 ; 渡辺, 洋宇 ; 深谷, 月泉 ; 岩, 喬 ; 富川, 正樹 ; 上山, 武史 ; 山本, 恵一 ; Yoshida, Chihiro ; Bando, Takeshi ; Nagai, Akira ; Shintani, Toshihisa ; Miyashita, Toru ; Watanabe, Yoh ; Fukaya, Gessen ; Iwa, Takashi ; Tomikawa, Masaki ; Ueyama, Takeshi ; Yamamoto, Keiichi
概要:
金沢大学医薬保健研究域医学系
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| 20.
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Fukuda, Nahoko ; Tanishima, Kiyoh ; 福田, 直子 ; 谷島, 清郎
概要:
金沢大学医療技術短期大学部
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| 21.
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溝部, 明男 ; Mizobe, Akio
概要:
金沢大学人間社会研究域人間科学系<br />AGIL図式が、社会構造の比較分析のために有効な準拠枠であるためには、その図式において設定されている諸次元が、相互に分析的に独立であり、しかも網羅的でなければならない。このことの証明のためにパーソ
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ンズは、(一) 小集団の実験室的研究によるベイルズの「四つのシステム問題」という概念の一般化、(二) パターン変数の組合せ、(三) 内的-外的、手段的-成就的という二つの軸のクロスによる導出、という三つの異った方法に依拠している。パーソンズ自身は最終的には (三) を選択しているが、これらはそれぞれ、立証することが相当に困難な前提を含んでいるので、どれか一つの方法のみによって、満足すべき説明を与えうるとは思えない。本稿では、三つの方法が相互に補足しあい補強しあっているという観点から、特に、従来議論されることの少なかった (二) を重視して、『作業論文集』における議論を検討し再構成する。そして、この (二) のタイプの方法が、(a) 五一-五三年の段階のパターン変数の理論、(b) 行為が多機能的ではないという仮定、をまず前提としながら、(c) ある特定のパターン変数の間の「親和性」が他のパターン変数の組合せから区別しうる程に強い、という仮説を含んでいることを明らかにする。パーソンズはこの「親和性の仮説」を明確化してはいないが、この仮説は図式の構成において非常に重要な位置を占めている。このことは、彼の理論が「行為理論」を基盤としているということの一つの表現であると見なすことができる。<br />If the AGIL scheme is to be a significant framework in the comparative analysis of social structures, the dimensions proposed by the scheme must be analytically independent of one another and exhaustive. To prove this, Parsons has taken three different methods: (1) generalization of Bales' four system problems through the experimental study of small groups, (2) the combination of pattern variables, (3) deduction of dimensions by crossing the two axes, internal-external and instrumental-consummatory, He seems to finally adopt the third. It is difficult to suppose, however, that either one of them by itself can give a clear basis to the scheme since each of them include several assumptions that have not been validated.Taking the stand point that the all three methods are complementary, I will examine and re-construct the discussions in Working Papers in the Theory of Action with special reference to the second method, which has not been well discussed in the past. And then I will clarify that he assumes (a) that his pattern-variable scheme is already established, (b) that an act is not multi-functional, and (c) that the affinities between cirtain pattern variables are intense enough to be distinguished from the other combinations, which I call “the hypothesis of affinities.”Parsons himself is not clearly conscious of this hypothesis. But it occupies a very important place in his logical procedure, because it opens the way to the emperical verification of the scheme. That the AGIL scheme contains this hypothesis is a notable charactristic of his theory based on the “action theory.”<br />出版者照会後に全文公開
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| 22.
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柏谷, 健二 ; Kashiwaya, Kenji
概要:
金沢大学環日本海域環境研究センター<br />リルの発達過程を定量的に表現するための基礎として,一つのモデルに対する確率微分方程式を導入した.これは,「合流確率は流路数に比例し,分流確率は流路幅/水深に比例する」という仮説から導かれたもので
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ある.実験的に検討した結果,前記の二つの仮説は妥当なものと認められた.さらに上記の方程式の定常解から,最も出現確率の高い流路本数が導かれることが示され,それは実験結果とかなり良好な一致を示した.
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| 23.
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大串, 竜一 ; 中村, 浩二 ; 土屋, 正登 ; Ohgushi, Ryoh-ichi ; Nakamura, koji ; Tsuchiya, Masato
概要:
出版者照会後に全文公開
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| 24.
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加藤, 喜代志
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| 25.
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篠, 三知雄
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| 26.
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高橋, 通男
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| 27.
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久富木, 成大
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| 28.
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片倉, 穣
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| 29.
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楠根, 重和
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| 30.
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島田, 昌彦
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| 31.
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久保田, 功
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| 32.
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松本, 健 ; 小泉, 貞之 ; 木羽, 敏泰
概要:
金沢大学イノベーション創成センター<br />100m1二ロフラスコにフェノール40mlを入れ,予備加熱して脱水してからフラスコ内を窒素ふんい気とした後,試料の高純度マグネシウム片を加え,加熱還流すると,金属はマグネシウムフェノオキシドとな
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って溶解し,酸化物は溶けないで残さとなる.無水メタノールを加えて希釈後,酸化物残さを濾別し希塩酸で溶解した水溶液について,マグネシウムの量を原子吸光法で定量し酸化物量を求める.本法の精度は高く,金属表面及び内部の酸化物の総量を簡単迅速に定量できる. A 40 ml of phenol was put in 100 ml two neck round-bottom flask equipped with a conventional distillation device and a ground glass stopper, and heated to the boiling point of phenol, 180℃. During this treatment, a slight amount of water contained in phenol was eliminated from phenol as the azeotropic vapor mixture of phenol and water at 99.5℃, and phenol was thoroughly dehydrated. After the distillation device was replaced by a reflux condenser, a piece of magnesium metal sample was put quickly into the flask through the side neck. Then the content was heated under stirring at 180℃, until magnesium metal diminished completely in phenol, forming magnesium phenoxide, while magnesium oxide remained as residue. The reaction mixture was cooled to (50〜60) ℃, and anhydrous methanol was added to keep phenol and magnesium phenoxide in dissolving form. The residual magnesium oxide was caught on a sintered glass filter (1G5) and dissolved in 50 ml of 2 M hydrochloric acid. The solution was diluted to a definite volume and magnesium in the solution was determined by the atomic absorption spectrometry. All the experiments were carried out in a glove box in dry nitrogen atmosphere to avoid the influence of oxygen and water from air. By the above procedure a minute amount of magnesium oxide could be determined precisely with high reproducibility. To clarify the behaviors of magnesium metal and magnesium oxide in this separation process additional experiments were also done.
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| 33.
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岡沢, 孝雄
概要:
金沢大学留学生センター
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| 34.
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畑, 安次
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| 35.
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内田, 洋
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| 36.
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川上, 光彦 ; 高山, 純一
概要:
金沢大学理工研究域環境デザイン学系
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| 37.
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石原, 清行 ; 金木, 健 ; 川上, 光彦 ; 近藤, 達男
概要:
金沢大学理工研究域環境デザイン学系
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| 38.
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石原, 清行 ; 金木, 健 ; 川上, 光彦 ; 近藤, 達男
概要:
金沢大学理工研究域環境デザイン学系
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| 39.
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石原, 清行 ; 金木, 健 ; 川上, 光彦 ; 近藤, 達男
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| 40.
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山田, 外史 ; 別所, 一夫 ; 飯塚, 恒雄 ; 木村, 紘道
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| 41.
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村上, 和光
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| 42.
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深井, 一郎
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| 43.
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五味, 武臣
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森, 英一
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| 45.
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深川, 明子
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| 46.
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片桐, 和雄 ; Katagiri, Kazuo
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森, 源三郎
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| 48.
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上田, 穣一
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杉本, 幹博
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| 50.
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藤, 則雄
概要:
地質図あり、原本をご確認ください
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| 51.
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藤, 則雄
概要:
地質図あり、原本をご確認ください
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| 52.
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山本, 博男
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| 53.
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梶川, 伸一
概要:
金沢大学人間社会研究域歴史言語文化学系
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| 54.
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大瀧, 幸子 ; Otaki, Sachiko
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| 55.
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梅田, 康夫
概要:
金沢大学人間社会研究域法学系
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| 56.
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堀林, 巧 ; Horibayashi, Takumi
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| 57.
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杉本, 幹博
概要:
金沢大学教育学部理科教育
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| 58.
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杉本, 幹博
概要:
金沢大学教育学部
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| 59.
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出村, 慎一 ; 松浦, 義行
概要:
This study was designed to determine the relationship of muscular strength with swimming performance. For this purpose, fifteen muscular strength tests and thirteen swimming performance tests were administrated to 153 skilled college
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male swimmers. The findings are surmmarized as follows; 1) The dynamic strength which was measured by arm-pulls, sit-ups, and squat-jump showed significant correlation with most of swimming performance tests. However, the static strength which was measured by push arm strength, pull arm strength, abdominal strength, and leg strength (up-ward) did not show such correlation. 2) For the crawl stroke, the static strength which Was measured by back strength, grip strength, arm strength, and leg strength (down-Ward) showed no significant correlation with 200m and/or 400m swimming performance tests. Significant correlation between the static strength and performances, however, was found for such shorter distances as 25m, 50m, 100m, and/or 200m. Dynamic strength which was measured by arm-pulls, sit-ups, and squat-jump showed significant correlation with all swimming performance tests from 25m to 400m. 3) For the distance of 25m, the following correlations were statistically significant: the performances in breast stroke with the records in back strength and push arm strength; those of back stroke with leg strength (down-ward) and squat jump; and those of butterfly stroke with squat jump. For the distance of 200m, however, these correlations were not significant. 4) The performances in butterfly stroke showed significant correlation with sit-ups, arm-pulls, and squat-jump. The same performances, however, did not show any correlation with the static strength which wan measured by back strength, grip strength, arm strength, push arm strength, and leg strength. 5) In 25m swimming performance tests, the sit-ups did not show significant correlation only with breast stroke, while the push arm strength and vertical jump showed significant correlation only with breast stroke. In 200m swimming performance tests, the sit-ups did not show significant correlation only with breast stroke, while the vertical jump showed significant correlation only with breast stroke. 6) In 25m swimming performance test, the arm strength and push-ups showed significant correlation only with crawl stroke. In 200m swimming performance test, the arm strength, push-ups, and leg strength (down-ward) showed significant correlation only with crawl stroke. 7) The total amount of contribution of all the muscular strength tests to the swimming performance was found highest in the 25m crawl arm pull (42.1%), and lowest in the 200m breast stroke (17.1%). 8) In most of swimming performance tests, more than 70% of total amount of contribution of all the muscular strength tests can be explained by less than half of all the test items experimented. 9) In case of 25m breast stroke, 91.4% of total amount of contribution of all the muscular strength tests can be explained by five tests; grip strength (left hand), squat-jump, grip strength (right hand), vertical jump, and arm-pulls. In case of 400m crawl stroke, 93.0% by six tests; arm-pulls, squat-jump, sit-ups, leg strength (up-ward), leg strength (down-ward), and arm strength (right hand).
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| 60.
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出村, 慎一 ; 松浦, 義行 ; 田中, 喜代次 ; 田井村, 明博 ; 服部, 隆 ; ムハマッド アンワル, パサウ
概要:
The purpose of this study was to examine a structure of flexibility in swimmers from the viewpoint of the factor analysis. Twenty-four test items which were based upon the hypothesis given by Nicks and Fleishman were selected and
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administered to the 153 college male swimmers. ROTOHIST technique developed by Zavara was applied to an unrotated factor pattern matrix produced by the principal factor solution, and then, the hierarchical factorial structure of flexibility was investigated. As a result, 12 factors were extracted, which did explain more than 85 per cent of the total variance; and according to the aforementioned technique, two factors with the highest eigenvalues were rotated at first and interpreted. And then, each of the rest of the factors corresponding to the next highest eigenvalue was added in due order to the previously rotated factors and again interpreted. This procedure was thus repeated in the same manner until after the eleventh rotation. While the rotated factors were interpreted at each rotation level, they were synthesized and arranged also at the whole level. Eventually, the authors drew a tree diagram. The tree diagram shows that a general flexibility exists and it may part such two ability areas as static flexibility and dynamic flexibility (i.e., swimming speed), just as Nicks and Fleishman hypothesized in their paper; however, the investigated structure of flexibility was somewhat different from theirs. That is, it was inferred that flexibiliy area of motor ability does not simply consist of some subdivided flexibility areas that were pointed out by Nicks and Fleishman, but of more complex domains that were subdivided and/or partly integrated as the degree of complexity of factors decreases.
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| 61.
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鯨, 幸夫 ; 神田, 巳季男
概要:
We tried to ascertain that how thc growth habits of plants would be altered where the nutrition levels of cultural solut
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ion were changed in the mid course of vegetative growth stage from the viewpoint of top-root relationships. Materials used were Lolium multiflorum LAM., Mammos italian B sp. and Mammos A sp. as erect type and weeping type respectively. The experiments were carried out in a green house, and water culture with Hewitt's solution was adopted (Treatment N-L: nutrition level was changed 10 ppm→ 10 ppm→ 10 ppm→ 50 ppm, Treatment N-N: nutrition level was changed 50 ppm→ 10 ppm→ 50 ppm→ l0 ppm). The results obtained were as follows; 1. There was no remarkable change in the pattern of increase in the total plant dry weight under circumstances where the nutrition levels were changcd in the mid course of the growth stage of the plant. In the later stage of growth the total plant dry weight, however, was larger under high nutrition level than under the low nutrition level. 2. The value of relative growth coefficient h (h=tan θ) was altered parallel with increase or decrease in nutrition level. 3. The value of T/R 3-D ratio's, however, was changed elastically parallel with the change in nutrition level. 4. Change in mean stem nos/root nos. ratio (S/R nos. ratio) over each period among successive samplings with advance of growth stage was the same as the pattern of the change in T/R 3-D ratio. 5. The value of the estimated root surface area by using the area meter (Hayashi denko AAM-5) in low nutrition level were larger than those in high nutrition level. The value in low planting density were always larger than those in high planting density, i.e. D(9) > D(6) > D(3), throughout the experimental period. 6. The top-root relationships, however, showed the elastic reaction in accordance with the change in nutrition levels. From the viewpoint of community structure, it was considered that the change of two dimensional plane S/R nos. ratio and three dimensional T/R 3-D ratio in accordance with the nutrition level seemed to have the influence, in the result, on the change in the value of relative growth coefficient (h = tan θ).
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| 62.
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村上, 清敏
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| 63.
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加藤, 和夫
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| 64.
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Hibino, Masao ; Nakayama, Kenji ; Mizukami, Toshihiko
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| 65.
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稲松, 敏夫 ; 今越, 茂 ; 金田, 秋雄 ; 渡辺, 亮一 ; 鳥居, 和之 ; 山岸, 一隆
概要:
金沢大学理工研究域環境デザイン学系
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| 66.
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広瀬, 幸雄 ; 田中, 啓介 ; 岡林, 邦夫
概要:
金沢大学大学院自然科学研究科<br />Stress corrosion tests were conducted on the blunt-notch compact tension specimens of quenched-and-t
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empered SNCM 8 steel having several different prior-austenite grain-sizes in a 3.5% N.aC1 solution environment. The effects of grain-size on the nucleation and growth of stress corrosion cracks were analysed from a viewpoint of fracture mechanics. The susceptivity of material to stress corrosion cracking was characterized by five quantities, i. e., the time to crack nucleation at the notch root, t~, the threshold stress intensity factor, K _ <ISCC>, the stress corrosion fracture toughness, Ksc, the crack growth rate, (da/dt)_<II>, and the stress intensity factor, (K) _<II>, at the middle point of the region II in crack growth curves. The results obtained are summarized as follows : (1) The crack nucleation life t_n was determined by the stress intensity factor Ko, the yield strength σ_Y and the notch root radius p as t_n = C [2K_0/(σ_Y√<πρ>) ]^m where C and m are constants independent of prior-austenite grain-size. The value of effective notch root radius obtained by substituting K_0=K_<ISCC> and t_n=240 hrs into the above equation was found to increase with grain size. (2) When the plastic zone ω was smaller than the grain size d, the K_<ISCC> Value was found to take a nearly constant value of 35 to 45 kg/mm^<3/2> For the cases of ω/d>1, the values of K_<ISCC> and (K)_<II> increased with decreasing yield strength while the value of (da/dt)_<II> decreased. The larger grain sized material showed lower (K)_<II> and higher (da/dt)_<II> values when compared at the same yield strength. (3) The values of Klscc and (K)_<II> Were higher and (da/dt)_<II> was lower in thin specimens than in thick specimens. The amount of microbranching of cracks was suggested to be a significant clue to the effects of grain size and specimen thickness on growth kinetics.
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安藤, 次郎
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柴田, 固弘
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橋本, 哲哉
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| 70.
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山辺, 知紀
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山辺, 知紀[訳紹介]
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| 71.
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海野, 八尋
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宮田, 美智也
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平館, 道子
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| 74.
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大野, 浩
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| 75.
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伊藤, 喜栄
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| 76.
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奥田, 耕一
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| 77.
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Fujisawa, Masaya
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深井, 一郎
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深川, 明子
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宮口, 尚義
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| 81.
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片桐, 和雄 ; 石川, 克己 ; 大友, 順治 ; 岡田, 佳子 ; 上腰, 郁子 ; 山崎, 陽子
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| 82.
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山本, 博男 ; 平下, 政美
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深川, 明子
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宮口, 尚義
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村上, 和光
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| 86.
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片桐, 和雄 ; 石川, 克己 ; 大友, 順治
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| 87.
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山本, 博男 ; 岩崎, 重次郎
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| 88.
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矢ヶ崎, 孝雄 ; 社会科教育研究グループ ; 浅田, 隆 ; 岩田, 修一 ; 大西, 賢一 ; 岡部, 昌樹 ; 小幡, 秀治 ; 新保, 賢了 ; 砂田, 武嗣 ; 端保, 源太郎 ; 野田, 大介 ; 福原, 俊夫 ; 細川, 克彦 ; 村本, 外志雄 ; 屋敷, 道明
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| 89.
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山崎, 豊 ; 理科教育研究グループ ; 広田, 専精 ; 宮崎, 直二 ; 槇野, 輝義 ; 野村, 祐治 ; 堀田, 修 ; 彦野, 東洋男 ; 戸田, 教一 ; 藤井, 昭久 ; 前川, 儀男 ; 木本, 重史 ; 森, 真治
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| 90.
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山崎, 豊 ; 理科教育研究グループ ; 広田, 専精 ; 宮崎, 直二 ; 槇野, 輝義 ; 野村, 祐治 ; 堀田, 修 ; 彦野, 東洋男 ; 戸田, 教一 ; 藤井, 昭久 ; 前川, 儀男 ; 木本, 重史 ; 森, 真治
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| 91.
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片桐, 和雄 ; 石川, 克巳 ; 大友, 順治 ; 金沢大学教育工学研究センター重障児研究グループ
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| 92.
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山崎, 豊 ; 宮下, 文夫 ; 平田, 四郎 ; 竹本, 義昭 ; 清水, 和正 ; 吉田, 貞介
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| 93.
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金沢大学教育学部教育工学研究センター協議会
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太田, 雅夫
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森, 英一
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| 96.
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深美, 和夫
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| 97.
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Bessho, Kazuo ; Yamada, Sotoshi ; Ohyama, K.
概要:
A magnetic frequency tripler having a new configuration is proposed. The tripler is composed of three series-connected reactor circuits connected in delta. Because a triple frequency current circulates in delta-connection and does not
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flow into the input line, the input current has very little distortion. Therefore, the tripler is very suited for a high power unit. This paper presents the analyses of the delta circuit as a basic circuit to clarify the characteristics of the tripler. Moreover, the relations between characteristics and circuit constants were examined. The results may be used as a basis for design.
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| 98.
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Sudani, T. ; Yamada, Sotoshi ; Bessho, Kazuo
概要:
The authors propose a new magnetic frequency tripler with series-connected reactors, and present a numerical analysis o
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f the tripler. In the analysis, Φ-i characteristic of saturable reactor is approximated by (if th-order plynominal, and nonlinear ordinary d ifferencial equations for flux linkage are derived from an equ ivalenc circuit. The nonlinear simultaneous equations, which are obtained by using the method of Harmonic Balance, are solved by an improved Newton's method. The improved numerical method enables to determine optimum gap length and coil turns of the reactors. Experimental results, which are obtained by using the reactors with the numerically determined gap length and coil turns, show a constant voltage characteristic up to a certain load and a drooping characteristic above that load.
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| 99.
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広瀬, 幸雄 ; 田中, 啓介 ; 矢島, 善次郎 ; 岡林, 邦夫
概要:
金沢大学大学院自然科学研究科
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| 100.
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広瀬, 幸雄 ; 田中, 啓介 ; 矢島, 善次郎 ; 岡林, 邦夫
概要:
金沢大学大学院自然科学研究科<br />The fracture surface of stress corrosion cracking of tempered SNCM 8 steel in a 3.5% NaCl solution e
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nvironment was observed by means of scanning electron microscopy and the X-ray diffraction technique. A quantitative nature of the topography and the residual stress of the fracture surface were found to be more closely related to the crack growth rate than to the stress intensity factor. The relation between the areal fraction φ of prior-austenite grain boundary fracture in the fracture surface and the growth rate da/dt of stress corrosion cracks was obtained as da/dt = exp (A - Cφ) where A is a constant dependent on tempering temperature while C is independent. The residual stress σ_R measured on the fracture surface by the X-ray method was tensile and changed as a function of the areal fraction of grain boundary fracture: σ_R= (1-φ)σ^^-R The mechanical field neat the tip of a stress corrosion crack with microbranching was modeled by a blunt crack with the equivalent root radius ρ_<eq>. The equivalent stress intensity factor given by K_<eq> = √<pl/p_<eq>> K was proposed to be a fracture mechanics parameter for characterizing the near-tip field, thus the crack growth rate. The value of p<eq> is twice the microbranching width of the crack and p_1 is the limiting root radius for a sharp crack. The concept the equivalent stress intensity factor may explain the finding that the fractographic feature is more closely related to the crack growth rate than to the stress intensity factor.
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