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AlGaAs激光器的频率稳定

宇航计测技术 1984年第S1期 145-154页

作者： Motoichi Ohtsu hidemi tsuchida Toshiharu Tako. 熊承锡

本文主要报道AlGaAs激光器谱线宽度的测定及频率稳定方面现已完成的工作,并相应说明其有关的应用。实验证明,谱线宽度可以减窄至1MHz。曾采用法布里一珀罗（Fabry-Perot）干涉仪,水及铷85吸收谱线作为参考标准,以改善长期（τ≥ls）频... 详细信息

本文主要报道AlGaAs激光器谱线宽度的测定及频率稳定方面现已完成的工作,并相应说明其有关的应用。实验证明,谱线宽度可以减窄至1MHz。曾采用法布里一珀罗（Fabry-Perot）干涉仪,水及铷85吸收谱线作为参考标准,以改善长期（τ≥ls）频率稳定度,相应所达到的阿仑方差σ2方根值的最小值分别为:2.0×10-11,1.1×1011和1.4×10-12（在τ=100s时）。采用外光栅的激光器,最佳σ为3.2×10-12（在τ=100s时）。经多项试验已完成了改进短期频率稳定度（τ-2水平。已研制成一套测量频率稳定度阿仑方差的实时处理系统（ARPS）。利用这台装置完成了最佳频率控制工作。作为频率稳定的激光器的一种应用,介绍了用于水吸收谱线波长的精密测量,初步结果为:R（42-33）线波长为8164.8737±0.0003A。正着手进行的Rb和Cs光抽运实验,文中也作了简介。

关键词：激光器自由振荡干涉仪法布里光激射器电子器件测量仪器频率稳定度谱线宽度光栅法 AlGaAs

Is resilience socially emerging or embedded?A review of“resilience”under climate change in Sri Lanka

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Journal of Safety Science and Resilience 2021年第4期2卷 258-266页

作者： Ryo tsuchida Shutaro Takeda Graduate School of Advanced Integrated Studies in Human Survivability Kyoto UniversityKyotoJapan

Since the advent of a new academic regime that examines the nexus of humans and water,resilience studies of the coevolution of human-water systems have advanced rapidly because of the climate ***,the concept of resilience poses a new social *** study analyzes the gap in resilience studies through a Sri Lankan water-related disaster research ***,the authors discuss the potential and challenges for resilience evolution under climate change in Sri *** the nuance of resilience,the review showed that resilience is complementarily emerging and embedded in culture and society,such as traditional knowledge and local history,and from scientific research-oriented translation and wide international policy view in *** is the accumulation of stable states and supporting mechanisms found in the interaction between normal phases and emergencies in elements unique to the *** study suggests that it is critical to support the resilience and mechanisms of the whole and each layer,leveraging the diverse and sustainable livelihoods in the Sri Lankan context against climate change.

关键词： Resilience Climate change Water-related disasters Adaptation Sri Lanka

Static Tensile Deformation Behaviors of an Fe-30Mn-3Al-3Si TWIP Steel Studied by In-Situ Neutron Diffraction

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Journal of Iron and Steel Research International 2011年第S1期18卷 178-182页

作者： tsuchida N Ueji R Tomota Y Graduate School of Engineering University of Hyogo2167 ShoshaHimejiHyogoJapan Faculty of Engineering Kagawa University2217-20Hayashi-choTakamatsuKagawaJapan Graduate School of Science and Engineering Ibaraki University4-12-1NakanarusawaHitachiIbarakiJapan

TWIP (TWinning Induced Plasticity) steel is one of the advanced steels with attractive mechanical *** typical composition of TWIP steel includes a large amount of manganese with some aluminum and *** study has shown that TWIP steel exhibits high strength with adequate elongation at high strain rates,so that TWIP steel is desired to be applied for automotive ***,there are few studies concerning the deformation behaviors aimed to make clear the TWIP effect in TWIP *** this study,static tensile deformation behaviors of an Fe-30Mn-3Al-3Si TWIP steel and a SUS310S one were studied by in situ neutron diffraction during tensile *** terms of mechanical properties obtained by the static tensile tests,the TWIP steel showed better balance of tensile strength and uniform elongation than the 310S *** angular dispersion neutron diffraction with a wavelength of 0.16 nm was performed during stepwise tensile testing by using a neutron diffractometer for residual stress analysis (RESA) at the Japan Atomic Energy Agency.A specimen was extended in a step by step manner and neutron diffraction profiles of (111),(200) and (311) for austenite were obtained at each *** diffraction peak,lattice plane spacing,lattice plane strain and so on were determined by the profile analysis as a function of applied *** changes of lattice plane strain for austenite in the TWIP and 310S steels indicated several deformation stages in the tensile deformation and can be discussed the difference of intergranular stress between the two samples.

关键词： deformation twinnning tensile deformation in situ neutron diffraction lattice plane strain

Clinical importance of colonoscopy in patients with gastric neoplasm undergoing endoscopic submucosal dissection

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World Journal of Gastroenterology 2017年第23期23卷 4262-4269页

作者： Chieko tsuchida Naoto Yoshitake Hitoshi Kino Yoshihito Kaneko Masakazu Nakano Kohei tsuchida Keiichi Tominaga Takako Sasai Hironori Masuyama Hidetsugu Yamagishi Yasuo Imai Hideyuki Hiraishi Department of Gastroenterology Dokkyo Medical University Department of Diagnostic Pathology Dokkyo Medical University

To evaluate the usefulness of total colonoscopy (TCS) for patients undergoing gastric endoscopic submucosal dissection (ESD) and to assess risk factors for colorectal *** the 263 patients who underwent ESD at our department between May 2010 and December 2013, 172 patients undergoing TCS during a one-year period before and after ESD were targeted. After excluding patients with a history of surgery or endoscopic therapy for colorectal neoplasms, 158 patients were analyzed. Of the 868 asymptomatic patients who underwent TCS during the same period because of positive fecal immunochemical test (FIT) results, 158 patients with no history of either surgery or endoscopic therapy for colorectal neoplasms who were matched for age and sex served as the control group for *** revealed adenoma less than 10 mm in 53 patients (33.6%), advanced adenoma in 17 (10.8%), early colorectal cancer in 5 (3.2%), and advanced colorectal cancer in 4 (2.5%). When the presence or absence of adenoma less than 10 mm, advanced adenoma, and colorectal cancer and the number of adenomas were compared between patients undergoing ESD and FIT-positive patients, there were no statistically significant differences in any of the parameters assessed. The patients undergoing ESD appeared to have the same risk of colorectal neoplasms as the FIT-positive patients. Colorectal neoplasms were clearly more common in men than in women (P = 0.031). Advanced adenoma and cancer were significantly more frequent in patients with at least two of the following conditions: hypertension, dyslipidemia, and diabetes mellitus (P = 0.019).CONCLUSIONIn patients undergoing gastric ESD, TCS appears to be important for detecting synchronous double neoplasms. Advanced adenoma and cancer were more common in patients with at least two of the following conditions: hypertension, dyslipidemia, and diabetes mellitus. Caution is therefore especially warranted in patients with these risk factors.

关键词： Colonoscopy Colorectal neoplasm Gastric neoplasm Endoscopic submucosal dissection Fecal immunochemical test

Human Serum Albumin Hybrid Incorporating Synthetic Hemes:A Novel O_2-Carrying Hemoprotein

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应用化学 2001年第5期18卷 316-321页

作者： Eishun tsuchida Teruyuki KOMATSU Yuping WU Yubin HUANG Department of Polymer Chemistry Advanced Research Institute for Science and EngineeringWaseda UniversityTokyo 169-8555Japan

Incorporation of synthetic heme(FeP) into recombinant human serum albumin(rHSA) provides an artificial hemoprotein(rHSA-FeP) which can bind and release oxygen reversibly under physiological conditions(in aqueous media, pH 7.3, 37 ℃) like hemoglobin(Hb) and myoglobin. An rHSA host absorbs maximally eight FeP molecules, and the solution properties are almost identical to those of rHSA itself. The second-order structure and surface charge distribution of rHSA were always constant independent of the binding numbers of FeP. Its O 2-binding ability satisfies the initial clinical requirements for red cell substitute. Although the NO-binding affinity is 8-fold high compared to the Hbs, administration of this fluid into rats showed negligible change in the blood pressure. Physiological responses to exchange transfusion with this rHSA-FeP into anaesthetized rats have also been evaluated.

关键词：人血清白蛋白氧载血红素蛋白血液代用人工合成血红素

Oncological results, functional outcomes and health-related quality-of-life in men who received a radical prostatectomy or external beam radiation therapy for localized prostate cancer： a study on long-term patient outcome with risk stratification

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Asian Journal of Andrology 2009年第3期11卷 283-290页

作者： Itsuhiro Takizawa Noboru Hara Tsutomu Nishiyama Masaaki Kaneko Tatsuhiko Hoshii Emiko tsuchida Kota Takahashi Division of Urology Department of Regenerative and Sciences Niigata University Niigata 951-8510 Japan Transplant Medicine Graduate School of Medical and Dental Division of Radiation Oncology Department of Molecular Genetics Graduate School of Medical and Dental Sciences Niigata University Niigata 951-8510 Japan

Health-related quality-of-life （HRQOL） after a radical prostatectomy （RP） or extemal beam radiation therapy （EBRT） has not been studied in conjunction with oncological outcomes in relation to disease risk stratification. Moreover, the long-term outcomes of these treatment approaches have not been studied. We retrospectively analyzed oncological outcomes between consecutive patients receiving RP （n = 86） and EBRT （n = 76） for localized prostate cancer. HRQOL and functional outcomes could be assessed in 62 RP （79%） and 54 EBRT （79%） patients over a 3-year follow-up period （median： 41 months） using the Medical Outcomes Study Short Form-36 （SF-36） and the University of Califomia Los Angeles Prostate Cancer Index （UCLA PCI）. The 5-year biochemical progression-free survival did not differ between the RP and EBRT groups for low-risk （74.6% vs. 75.0%, P = 0.931） and intermediate-risk （61.3% vs. 71.1%, P = 0.691） patients. For high-risk patients, progression-free survival was lower in the RP group （45.1%） than in the EBRT group （79.7%）（P = 0.002）. The general HRQOL was comparable between the two groups. Regarding functional outcomes, the RP group reported lower scores on urinary function and less urinary bother and sexual bother than the EBRT group （P 〈 0.001, P 〈 0.05 and P 〈 0.001, respectively）. With risk stratification, the low- and intermediate-risk patients in the RP group reported poorer urinary function than patients in the EBRT group （P 〈 0.001 for each）. The sexual function of the high-risk patients in the EBRT group was better than that of the same risk RP patients （P 〈 0.001）. Biochemical recurrence was not associated with the UCLA PCI score in either group. In conclusion, low- to intermediate-risk patients treated with an RP may report relatively decreased urinary function during long-term follow-up. The patient＇s HRQOL after treatment did not depend on biochemical recurrence.

关键词： long-term observation quality-of-life radiation therapy radical prostatectomy risk stratification

NOVEL SYNTHESIS OF POLYARYLENESULFONIUM CATIONS THROUGH A MULTI-ELECTRON TRANSFER PROCESS

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Chinese Journal of Polymer Science 1998年第2期16卷 106-116页

作者： tsuchida Eishun MIYATAKE Kenji Department of Polymer Chemistry Advanced Research Institute for Science and Engineering Waseda University Takyo 169 JapanDepartment of Polymer Chemistry Advanced Research Institute for Science and Engineering Waseda University Takyo 169 Japan

The oxidative polymerization of aryl sulfoxides provides a novel polysulfo-nium compound, poly(methylsulfonio-1,4-phenylenethio-1,4-phenylene cation) in quantita-tive yield. The polymerization proceeds efficiently in an acidic solution under atmosphericconditions. Oxygen, chemical and electrochemical oxidations are available. Vanadyl acety-lacetonate and cerium ammonium nitrate act as an effective catalyst for the oxygen ox-idative polymerization. The polymerization mechanism involves multielectron oxidation ofthe sulfides followed by successive electrophilic substitution. The resulting polyarylenesul-fonium cations are useful as a soluble precursor for the synthesis of high molecular weight(M_w>10~5) poly(thio arylne)s.

关键词： Oxidative polymerization Multi-electron transfer Sulfonium cation Poly(thio phenylene)

Complete laparoscopic resection of the rectum using natural orifice specimen extraction

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World Journal of Gastroenterology 2014年第44期20卷 16707-16713页

作者： Masayuki Hisada Kenji Katsumata Tetsuo Ishizaki Masanobu Enomoto Takaaki Matsudo Kazuhiko Kasuya Akihiko tsuchida Department of Digestive Surgery and Pediatric Surgery Tokyo Medical University

AIM: To investigate how complete laparoscopic anterior resection with natural orifice specimen extraction (NOSE), as a novel minimally invasive surgery, compares to conventional laparoscopic surgery.

关键词： Complete laparoscopic surgery Incisionless surgery Natural orifice specimen extraction Transanal specimen extraction Less invasive surgery

Computed tomography virtual endoscopy with angiographic imaging for the treatment of type Ⅳ-A choledochal cyst

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World Journal of Gastroenterology 2012年第28期18卷 3761-3764页

作者： Akihiko tsuchida Yuichi Nagakawa Kazuhiko Kasuya Bunso Kyo Takahisa Ikeda Yoshiaki Suzuki Tatsuya Aoki Takao Itoi Third Department of Surgery Tokyo Medical University Tokyo 160-0023 Japan Fourth Department of Internal Medicine Tokyo Medical University Tokyo 160-0023 Japan

Type Ⅳ-A choledochal cysts (CCs) are a congenital biliary anomaly which involve dilatation of the extrahepatic and intrahepatic bile ducts. We present the case of a 30-year-old woman with type Ⅳ-A CC, on whom threedimensional computed tomography (3D CT) and virtual endoscopy were performed. 3D CT revealed partial dilatation in the posterior branch of the intrahepatic bile duct and a relative stricture between it and the extrahepatic bile duct. Virtual endoscopy showed that this stricture was membrane-like and separated from the surrounding blood vessels. Based on these image findings, complete cyst resection, bile duct plasty for the stricture, and hepaticojejunostomy were safely performed. To the best of our knowledge, there are no reports of imaging by virtual endoscopy of the biliary tract which show the surrounding blood vessels running along the bile duct.

关键词： Choledochal cyst Bile duct dilatation Computed tomography Virtual endoscopy Bile duct plasty