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钢制压力容器厚壁焊件纵横裂纹的产生及特征

新疆石油学院学报 2000年第4期12卷 54-59页

作者：陈冬梅武玉慧 C.Mani h.homma Y.Kanto 新疆克拉玛依市锅炉压力容器检验所

对于压力容器厚壁焊件 ,其焊缝裂纹缺陷的检测、特征及评定是很重要的 ,这项工作常通过无损检测来完成 ,虽然各种无损检测技术利用标准文献提供一个大概的评定 ,但带有原始裂纹的试样能够得到与实际情况相符的更精确的参考数据。近期的... 详细信息

对于压力容器厚壁焊件 ,其焊缝裂纹缺陷的检测、特征及评定是很重要的 ,这项工作常通过无损检测来完成 ,虽然各种无损检测技术利用标准文献提供一个大概的评定 ,但带有原始裂纹的试样能够得到与实际情况相符的更精确的参考数据。近期的研究着重如下几个方面 :( 1 )产生一定大小和方向裂纹的方法 ;( 2 )用于产生裂纹的新材料对微观组织和机械性能的影响 ;( 3)裂纹的特征描述 ,用于试验研究的是碳 -锰钢制压力容器 (SA - 2 99 ASTM) 2 0mm和 1 2 5mm厚壁焊件 ;该文详述了如何运用一项新技术在焊件中产生裂纹 ,还有利用无损检测技术对裂纹进行特征描述。

关键词：钢制压力容器厚壁焊件焊缝裂纹检测评定

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用于未来LSI的自对准多晶硅电极工艺

微电子学与计算机 1988年第8期 19-20页

作者： Y.Misawa h.homma K.Sato N.Momma 王巧玉

为了实现更高性能的LSI,最近提出了自对准多晶硅电极工艺(SPEL).这种工艺采用优先干法刻蚀重掺杂多晶硅,使MOS和双极晶体管的接触区面积比常规工艺减少一半.而且晶体管的寄生电容和电阻也减小.

关键词：双极晶体管多晶硅自对准 NMOS LSI 发射极

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X射线荧光分析法测定铁矿石中全铁

冶金分析 2011年第7期31卷 18-21页

作者： KATAOKA Y homma h KOhNO h 日本理学公司日本大阪569-1146

铁矿石中全铁的含量范围通常较宽,因此需要高的分析精确度。尽管熔融制样法已经被普遍用于铁矿石的X射线荧光光谱分析,但作为样品制备的另一种方法,压片法由于简便、快捷的特点,其应用需求同样较大。康普顿散射比法已经被普遍用于岩石... 详细信息

铁矿石中全铁的含量范围通常较宽,因此需要高的分析精确度。尽管熔融制样法已经被普遍用于铁矿石的X射线荧光光谱分析,但作为样品制备的另一种方法,压片法由于简便、快捷的特点,其应用需求同样较大。康普顿散射比法已经被普遍用于岩石等样品中的重金属元素测定,其中荧光X射线与X射线管线发射的康普顿散射X射线的强度比被用作校正。不过,这种方法不能为矿石和精矿中高含量重金属元素的测定提供足够的准确度。本研究建立了一种新的方法,在元素间校正项中,将基本参数法获取的理论α系数用于康普顿散射比校正。本方法可以将铁矿石中全铁含量的测定准确度提高到0.14%(质量分数)。

关键词： X射线荧光分析铁矿石康普顿散射理论α系数

糖尿病大鼠输精管平滑肌收缩超反应性及钙通道特性(英文)

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中国药理学与毒理学杂志 1991年第4期5卷 261-268页

作者： Yasushi SAKAI Masato INAZU Ikuo homma ro whom correspondence should be sent Present address: POLA Pharmaceutical R & D Laboratory 560 Kashio-cho Totsuka-ku Yokohama 244 JapanSecond Department of Physiology Showa University School of Medicine 1-5 Hatanodai Tokyo 142 Japan

为对解糖尿病对输精管平滑肌功能的影响及其机理，我们比较了链脲菌素（streptozotocin)所致糖尿病大鼠及其同龄对照组大鼠输精管平滑肌对电场刺激，氯化钾，去氧肾上腺素的反应及钙通道的改变，电场刺激引起的收缩反应是单收缩之后继... 详细信息

为对解糖尿病对输精管平滑肌功能的影响及其机理，我们比较了链脲菌素（streptozotocin)所致糖尿病大鼠及其同龄对照组大鼠输精管平滑肌对电场刺激，氯化钾，去氧肾上腺素的反应及钙通道的改变，电场刺激引起的收缩反应是单收缩之后继以连续性收缩，糖尿病组单收缩幅度较大，两组连续收缩几乎相同。1μmol/L Bay K8644使糖尿病鼠输精管产生单收缩，对照组无影响。氯化钾引起的收缩和钙内流在两组都强，但在1μmol/L Bay K8644存在时，糖尿病组比对照组增加明显。10μmol/L去氧肾上腺素引起的收缩可完全被0．1μmol/L硝苯啶阻断。100μmol/L新霉素在对照组可完全抑制去氧肾上腺素引起的收缩，但在糖尿病组只能部分抑制，并使单收缩增强，用钙通道拮抗剂配体[^3h]PN200-110所做的结合实验表明，对照或糖尿病组钙通道的亲和力和结合位的数量都滑有明显的不同，在输精管可溶性成分中，蛋白激酶C含量在糖尿病组是对粗的两倍。这些结果提示在没有神经病变及钙通道数量不变吓，氯化钾增强链脲菌素所致糖尿病大鼠输糖管的收缩反应部分是由于钙通道开放的概率和蛋白激酶C活性增强所致。

关键词：糖尿病输精管钙通道超反应性

A Newly Developed Non-destructive Tritium Measurement Technique and Its Application to a V-4Cr-4Ti Alloy

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Southwestern Institute of Physics Annual Report

Southwestern Institute of Physics Annual Report 2006年第1期 154-155页

作者： LIU Xiang ChEN Xue homma h. hatano Y. Matsuyama M. 不详 Sichuan General Fire Brigade Chengdu 610041 China hydrogen Isotope Research Center Toyama University Gofuku 3190 Toyama 930-8555 Japan

Several evaluation techniques of tritium in material have been developed so far, such as imaging plate method or electrochemical etching and thermal desorption analysis, as well as conventional β-ray counting. For the latter, its detectable depth is usually limited to a very thin surface region, for example, about 1μm depth for organic and 0.1 μm for metallic materials owing to the shallow escape depth of tritium β-rays.

关键词：氘测量技术 V-4Cr-4Ti 合金

Lymphocytosis in Idiopathic Thrombocytopenic Purpura Patients Infected by <i>helicobacter pylori</i>

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Open Journal of Blood Diseases 2013年第1期3卷 32-35页

作者： Naoki Takezako Naohiro Sekiguchi Akira Tanimura Chiho homma Tateki Shikai Yayoi Takezako Noboru Yamagata Akiyoshi Miwa Department of hematology National Center for Global Health and Medicine Tokyo Japan. Department of hematology National Hospital Organization Disaster Medical Center of Japan Tokyo Japan

Background and Objectives: Several recent reports have demonstrated a close linkage between idiopathic thrombocytopenic purpura (ITP) and helicobacter pylori (h. pylori) infection in some patient’s populations. however, the pathogenetic mechanisms of h. pylori-induced thrombocytopenia remain obscure. Therefore, we investigated the prevalence of h. pylori infection pylori and performed a comparative analysis of a subset of h. pylori-infected patients (group A) with non-infected patients (group B) using the standard statistical methods. Design and Methods: From December 2001 to October 2002, we investigated the presence of gastric h. pylori infection in 30 adult ITP patients and 19 patients were treated with standard antibiotic therapy for h. pylori eradication (amoxicillin and clarithromycin plus lansoprazole combination). We used the standard statisticsto analyze the difference between group A and group B. Results: h. pylori eradication was achieved in 17/19 (89.4%) ***-infected patients. An improvement of platelet count was observed in 14/19 patients (73.6%) who achieved the eradication. Five of these patients achieved CR (two patients were with the acute ITP) and nine patients reached PR. The difference between the mean platelet count ± S.D. before and after h. pylori therapy was statistically significant in patients with successful decontamination (65 ± 48 × 109/L vs. 200 ± 140 × 109/L;p = 0.018). Lymphocyte counts at the diagnosis of h. pylori infected cases were significant higher than those of non-infected cases (1.58 ± 0.13 ×

关键词： Idiopathic Thrombocytopenic Purpura helicobacter pylori Eradication Lymphocytosis helper Th1 Lymphocyte

MeV-and Sub-MeV-photon Sources Based on Compton Backscattering at SPring-8 and KPSI-JAEA

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原子核物理评论 2009年第S1期26卷 94-99页

作者： K.Kawase M.Kando T.hayakawa I.Daito S.Kondo T.homma T.Kameshima h.Kotaki Y.Fukuda A.Faenov T.Shizuma S.V.Bulanov T.Kimura T.Tajima M.Shoji S.Suzuki K.Tamura h.Ohkuma Y.Arimoto T.Yorita M.Fujiwara S.Okajima Kansai Photon Science Institute Japan Atomic Energy Agency Japan Synchrotron Radiation Research Institute Department of Physics Osaka University Research Center for Nuclear Physics Osaka University

Recently we have constructed two facilities for generating photon beams in the MeV and sub-MeV energy regions by means of the Compton backscattering with a laser and an electron beam at SPring-8 and at Kansai Photon Science Institute of Japan Atomic Energy Agency(KPSI-JAEA). The MeV-photon source at SPring-8 consists of a continuous-wave optically-pumped far infrared laser with a wavelength of 118.8 μm and an 8 GeV stored electron beam. Present MeV-photon flux is estimated to be 1.3×103 photons/s. On the other hand,the sub-MeV-photon source at KPSI-JAEA consists of a pulse Nd∶YAG laser with a wavelength of 1 064 nm and a 150 MeV electron beam accelerated by microtron. In the first trial of the photon production in this source,backscattered photon flux is estimated to be 20 photons/pulse. Both the Compton backscattered photon sources have possibilities to be used for new tools in various fields such as nuclear physics,materials science,and astronomy.

关键词： laser Compton backscattering polarized γ-ray polarized X-ray

Improved hemolytic Performance of Blood Pump with Fluorine-Doped hydrogenated Amorphous Carbon Coating

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Advances in Chemical Engineering and Science 2013年第3期3卷 10-16页

作者： Yasuharu Ohgoe Masanori hiratsuka hirohito Sumikura Kazuyoshi Fukunaga Akihiko homma Kenji K. hirakuri Akio Funakubo Yasuhiro Fukui Division of Electronic and Mechanical Engineering Tokyo Denki University Saitama Japan

Fluorine-doped hydrogenated amorphous carbon (a-C:h:F) film was deposited on a flow-straightener, impeller and diffuser surface (SUS 304) of an enclosed-impeller type flow blood pump using the ionization deposition method with a source gas of C6F5h. The surface characteristics of the a-C:h:F film were examined using atomic force microscopy, X-ray photoelectron spectroscopy, and measurements of surface roughness, friction and surface potential. The a-C:h:F film tends to increase surface roughness and the negative surface charge. In addition, the surface energy and friction decrease with fluorine dopant in the a-C:h film. To estimate the hemolytic performance of a blood pump with the a-C:h:F film coating, the amount of hemolysis was measured using a mock circulatory system (in vitro test) with 500 mL of pig blood containing sodium citrate. In vitro test was conducted for 180 min with the blood flow and pump head maintained at 5 L/min and 100 mmhg, respectively. The a-C:h:F film coating reduced the amount of hemolysis and improved the hemolytic performance. Decreasing the surface energy and negative surface charge of the a-C:h:F film contributes to the improvement of the hemolytic performance. The a-C:h:F film coating is thus expected to be utilized in medical technology as a surface coating technology for artificial heart blood pumps.

关键词： Fluorine-Doped a-C:h Film hemolytic Performance Artificial heart Blood Pump

添加元素对Sm_2Fe_(17)C_x熔淬带材磁性能的改善

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电工合金 1993年第4期 25-30页

作者： S.Sugimoto K.Kurihara h.Nakamura M.Okada M.homma 喻承寅

经过对熔淬前合金铸锭显微组织的研究,确认了在Sm_2(Fe_(0.9)Cr_(0.1))_(17)C_(1.6)合金中,Sm_2Fe_(17)相的构成,具有Th_2Zn_(17)类型的结构。Sm_2(Fe_(0.9)Cr_(0.1))_(17)C_(1.6)熔淬带材经温度为750℃退火30分钟后,显示出了672KAm^(-1)(8.4KOe)的矫顽力。对显微结构的研究表明,该带材的晶粒直径为50～150nm。使用X-射线衍射分析,并研究了各种材料的磁滞回线之后,发现随着退火温度的增加,导致相结构从TbCu_(17)类型向Th_2Zn_(17)类型转变。含Ga的Sm_2(Fe_(0.9)Ga_(0.1))_(17)C_(1.6)带材,在退火之后获得了680KAm^(-1)(8.5KOe)的矫顽力。进一步在Sm_2(Fe,Cr)_(17)C_(1.6)和Sm_2(Fe,Ga)_(17)C_(1.6)合金中添加Co、Mn等,也使其磁性能得到了改善.特别是合金Sm_2(Fe_(0.85)Ga_(0.1)Co_(0.05))_(17)C_(1.6)带材,经650℃、30分钟的退火处理后,获得了高达1008KAm^(-1)(12.6KOe)的矫顽力以及(Bh)_(max)为62.4KJm^(-3)(7.8MGOe)的磁能积。这是到目前为止所报导过的、Sm_2Fe_(17)C_x熔淬带材获得的最高磁性能。

关键词：铁磁材料添加元素磁性