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零下温度时二维通道内界面活性剂减阻流动的实验研究

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西安交通大学学报 2006年第1期40卷 79-83页

作者：魏进家川口靖夫西安交通大学动力工程多相流国家重点实验室西安710049 东京理科大学机械工程系日本千叶县2788510

为了进行零下温度时区域供冷系统的界面活性剂减阻设计，测量了-5℃时以质量分数为20％的甘醇不冻液为溶剂的界面活性剂溶液油醇基二羟乙基甲基氯化铵在二维通道内的减阻特性，同时用粒子成像测速仪对减阻流动的湍流特性进行了测量．实... 详细信息

为了进行零下温度时区域供冷系统的界面活性剂减阻设计，测量了-5℃时以质量分数为20％的甘醇不冻液为溶剂的界面活性剂溶液油醇基二羟乙基甲基氯化铵在二维通道内的减阻特性，同时用粒子成像测速仪对减阻流动的湍流特性进行了测量．实验发现：质量分数为5×10^-5～5×10^-4的低浓度油醇基二羟乙基甲基氯化铵界面活性剂溶液在一定的雷诺数范围内均呈现减阻特性，且其减阻特性与质量分数和温度呈复杂关系，最大减阻值可高达70％以上；在湍流液体中只需加入少量该界面活性剂即可大幅度减少液体输送的动力消耗．与单独的质量分数为20％的甘醇不冻液湍流流动相比，添加界面活性剂抑制了湍流速度脉动，使雷诺应力完全消失．

关键词：区域供冷界面活性剂减阻湍流特性

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Behavior of Cesium in Dam Reservior-Investigation Based on Sediment Columns

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Journal of Water Resource and Protection 2013年第2期5卷 124-132页

作者： Jiefeng Li Alif Samsey Wenhan Li Toshiyuki kawaguchi Yongfen Wei Reni Desmiarti Fusheng Li Department of Chemical Engineering Bung Hatta University Padang Indonesia Graduate School of Engineering Gifu University Gifu Japan River Basin Research Center Gifu University Gifu Japan

To generate information for better understanding of the behavior of cesium in relatively closed water bodies, experiments using four columns consisted of the sediment phase and the overlying water phase, together with batch sorption experiments were conducted, and the kinetics and the binding potential of cesium by sediment were investigated. Through model analysis with both the first order and the pseudo-second order reaction models, the kinetic parameters of cesium within the four columns were determined. In addition, by analyzing batch equilibrium data with both Freundlich and Langmuir isotherm models, associated sorption parameters were also generated. Comparisons of the models’ suitability for description of both kinetics and binding capacity of cesium were thus made, and the effects of pH and EC on the binding capacity were also studied.

关键词： Cesium Sediment Sorption Capacity Sorption kinetics Water Safety Surface Water

Small serotonin-positive pancreatic endocrine tumors caused obstruction of the main pancreatic duct

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World Journal of Gastroenterology 2012年第45期18卷 6669-6673页

作者： Masami Ogawa Yoshiaki kawaguchi Atsuko Maruno Hiroyuki Ito Toshio Nakagohri kenichi Hirabayashi Hiroshi Yamamuro Tomohiro Yamashita Tetsuya Mine Department of Gastroenterology Tokai University School of Medicine143 ShimokasuyaIsehara 259-1193Japan Department of Gastroenterological Surgery Tokai University School of Medicine143 ShimokasuyaIsehara 259-1193Japan Department of Pathology Tokai University School of Medicine143 ShimokasuyaIsehara 259-1193Japan Department of Radiology Tokai University School of Medicine143 ShimokasuyaIsehara 259-1193Japan

We report 2 cases of pancreatic endocrine tumors that caused obstruction of the main pancreatic duct(MPD).A 49-year-old asymptomatic man was referred to our institution because dilation of the MPD was revealed by abdominal ultrasonography(US).No tumor was detected by endoscopic ultrasonography,computed tomography(CT),and magnetic resonance imaging(MRI).The diameter of the MPD was > 20 mm at the body,and no dilation was noted at the *** malignancy was not confirmed through cytology or imaging,pancreatic cancer was strongly ***-denectomy was *** and immunohistochemical examination revealed a 5 mm × 3 mm serotonin-positive endocrine *** was present around the MPD and seemed to cause stricture.A 32-year-old asymptomatic man had elevated serum amylase,and US demonstrated dilation of the *** tumor was detected by CT and *** cancer was suspected due to stricture and dilation of the *** of middle part of pancreas was *** and immunohistochemical examination revealed a serotonin-positive endocrine tumor sized 5 mm × 4 *** report 2 cases of serotonin-positive pancreatic endocrine tumors that caused stricture of the MPD in spite of the small size of the tumor.

关键词： Serotonin Pancreatic endocrine tumor Main pancreatic duct Obstruction Dilatation

An Invitation of the Combination of the Geriatric Nutritional Risk Index and the Triglyceride to High-Density Lipoprotein Cholesterol Ratio as a Mortality Predictor in Maintenance Hemodialysis Patients

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International Journal of Clinical Medicine 2017年第2期8卷 86-97页

作者： Ayako Hasegawa Norio Hanafusa Masayuki Okazaki Mizuki komatsu Hiroshi kawaguchi ken Tsuchiya kosaku Nitta Department of Medicine Kidney Center Tokyo Women’s Medical University Tokyo Japan Department of Blood Purification Kidney Center Tokyo Women’s Medical University Tokyo Japan Department of Nephrology Jyoban Hospital Fukushima Japan

Background: The geriatric nutritional risk index (GNRI) has been developed as a tool to assess the nutritional risk. The triglyceride to high-density lipoprotein cholesterol (TG/HDL-C) ratio has been shown to be a predictor of cardiovascular (CV) outcomes in the general population. Objectives: The aim of this study was to determine whether the combination of GNRI and TG/HDL-C ratio is a predictor of all-cause mortality and CV deaths in maintenance hemodialysis (MHD) patients. Methods: We performed a retrospective, observational cohort study in which we enrolled 341 MHD patients from a single center in Japan who had been followed up for a mean of 48.0 ± 12.7 months. The outcomes were defined as the occurrence of all-cause mortality and CV deaths during the follow-up period. Baseline GNRI and TG/HDL-C ratios were investigated for associations with outcomes by using Cox proportion hazards models adjusted for demographic parameters. Results: Overall, 101 of the subjects had died, of whom 52 died due to CV events during the mean follow-up period of 48.0 ± 12.7 months. The patients were grouped into four categories according to a median GNRI Conclusion: The combination of GNRI and TG/HDL-C ratio is an easily accessible marker for predicting all-cause mortality and CV deaths in MHD patients.

关键词： GNRI Triglyceride HDL-Cholesterol Mortality Hemodialysis

澳洲塞尔维亚语——英语双语儿童入学第一年英语词汇和形态发展（英文）

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中国语言战略 2015年第1期 107-130页

作者： Satomi kawaguchi Lucija Medojevic Bilingualism Research Lab Humanities and Communication Arts & MARCS Institute University of Western Sydney

本研究探讨两名塞尔维亚语-澳大利亚英语双语儿童和一名澳大利亚英语单语儿童在澳大利亚入学第一年的英语词汇和形态发展。对于这两名双语儿童,塞尔维亚语是他们的传承语,而澳大利亚英语是学校和其他社会环境中的主流语言。入学的第一... 详细信息

本研究探讨两名塞尔维亚语-澳大利亚英语双语儿童和一名澳大利亚英语单语儿童在澳大利亚入学第一年的英语词汇和形态发展。对于这两名双语儿童,塞尔维亚语是他们的传承语,而澳大利亚英语是学校和其他社会环境中的主流语言。入学的第一年会使他们的两种语言输入比率产生巨大的逆转。本研究历时一年每间隔三个月收集这三名儿童的口语语料,并比较双语儿童与同龄的澳大利亚英语单语儿童的词汇和形态发展。可加工性理论被用来测量形态发展。结果表明,入学前双语儿童在动词过去式-ed和第三人称单数-s形态标记方面不准确。然而,入学几个月后,这些不准确现象消失,双语儿童的英语语法的准确性与同龄的单语儿童难以区分。英语动词过去式形态-ed似乎对三名受试者,无论是双语儿童还是单语儿童,都具有挑战性。这表明儿童获得英语中所谓“规则”动词的过去式形态方面的问题具有普遍发展特征。数据分析表明,一旦双语儿童开始在全英文环境下学习,他们的语言发展并不落后于单语儿童,甚至可能在英语词汇方面比英语单语儿童更显优势。

关键词：双语儿童英语入学第一年词汇和形态发展

Prevalence of left ventricular dyssynchrony in patients with heart failure assessed by a novel programmer-cardioGRAF

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Journal of Geriatric Cardiology 2009年第3期6卷 151-156页

作者： Can-Zhan Zhu Naoto Takahashi Akira Yamamoto Masahira Ishikawa Naomi kawaguchi Takahiro Uchida kazuo Munakata Department of Cardiology 2nd Hospital of Xi ＇an Jiaotong University Xi ＇an China Internal Medicine Radiology Department Nippon Medical School Musashikosugi Hospital

Objectives Left ventricular systolic dyssynchrony is the most important determinant of response to cardiac resynchronization therapy （CRT）, playing a vital role to predict improvement of systolic function or LV reverse remodeling. CardioGRAF is a novel programmer based on the ECG gated single photon emission computed tomography （G-SPECT） imaging to detect LV systolic and diastolic dyssynchrony simultaneously. This study was to investigate the prevalence of systolic and diastolic left ventricular （LV） dyssynchrony in patients with heart failure. Methods We retrospectively studied 69 patients with heart disease, including 31 patients who had symptoms of heart failure （NYHA class Ⅱ-Ⅲ）, and 38 patients who had no symptoms of heart failure. （NYHA class Ⅰ）. G- SPECT data were analyzed by cardiaGRAF, and measurements included the time to end systole （TES）, the time to peak ejection （TPE）, the time to peak filling （TPF）, TES＋TPF and maximal difference （MD） of each parameters were obtained, using the 95th percentile of the control group as a cutoffof 150 ms for MD-TES, 139 ms for MD-TPE, 345 ms for MD-TPF and 315 ms for MD-TES＋TPF. Results The prevalence of LV systolic dyssynchrony was significantly higher in heart failure patients with reduced LV ejection fraction （LVEF）〈45% （72% for MD-TES; 64% for MD-TPE） compared with heart failure patients with preserved LVEF=45% （14% for both MD-TES and MD-TPE; P=0.002, P=0.005, respectively）; The prevalence of MD-TES〈150 ms was higher in NYHA class Ⅲ patients （64%） compared with NYHA class Ilpatients （27%, P=0.049）. However, the prevalence of the LV diastolic dyssynchrony were high but not difference between NYHA class III（47% for both MD-TPF and MD-TES＋TPF） and class Ⅲ（63% for MD-TPF; 69% for MD-TES＋TPF; P=NS） patients as well as between patients with preserved LVEF （43% for both MD-TPF and MD-TES＋TPF） and patients with reduced LVEF（64% for MD-TPF; 72% for MD-TES＋TPF; P=NS）. Conclusions The prevalence of LV systolic dyssynchrony was

关键词： dyssynchrony heart failure cardioGRAF single photon emission computed tomography

深锌扩散1.55μm窄平面条形InGaAsP激光器

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微纳电子技术 1983年第2期 10-13页

作者： Hitoshi kawaguchi 张华

在1.55μm波长范围内,对深锌扩散窄平面条形InGaAsP激光器进行了实验论证。采用深锌扩散结构,改进了电流限制性能并得到了3μm条宽的低阈值激光器。测试的远场图表明,侧向横模主要由反波导决定。这种窄条激光器趋向于多纵模工作。

关键词：激光器有源区光激射器电子器件 InGaAsP

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社会变革与大学发展(英文)

社会变革与大学发展(英文)

Negative Parity States in ^(39)Cl Configured by Crossing Major Shell Orbits

北京论坛（2007）文明的和谐与共同繁荣——人类文明的多元发展模式

作者： kawaguchi kiyofumi Ritsumeikan University

*** of Universities in Social Change It goes without saying that,generally,the mission of a university is to provide education(human resources development),to conduct research,and to contribute to society through the ...

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Chinese Physics Letters 2019年第6期36卷 17-20页

作者： Long-Chun Tao Cen-Xi Yuan Jian-Ling Lou Xiao-Fei Yan Yan-Lin Ye School of Physics and State key Laboratory of Nuclear Physics and Technology Peking University RIkEN Nishina Center Sino-French Institute of Nuclear Engineering and Technology Sun Yat-Sen University Department of Physics University of Tsukuba Department of Physics Kyungpook National University Department of Physics Osaka University Department of Physics Tokyo Institute of Technology Department of Advanced Sciences Hosei University Department of Physics Meiji University

Traditional "magic numbers" were once regarded as immutable throughout the nuclear chart. However, unexpected changes were found for unstable nuclei around N = 20. With both proton and neutron numbers around the magic number of 20, the neutron-rich ^(39)Cl isotope provides a good test case for the study of the quantumstate evolution across the major shell. In the present work, the negative parity states in ^(39)Cl are investigated through the β decay spectroscopy of 39 S. Newly observed γ transitions together with a new state are assigned into the level scheme of ^(39)Cl. The spin parity of 5/2^- for the lowest negative parity state in ^(39)Cl is reconfirmed using the combined γ transition information. These systematic observations of the negative parity states in ^(39)Cl allow a comprehensive comparison with the theoretical descriptions. The lowest 5/2^- state in ^(39)Cl remains exotic in terms of comparisons with existing theoretical calculations and with the neighboring isotopes having similar single-particle configurations. Further experimental and theoretical investigations are suggested.

关键词： Negative Parity States Crossing Major Shell Orbits immutable throughout

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