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由具有正、负反射系数的反射元构成的新型SAW反射器和谐振器

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压电与声光 1987年第2期 42-48+69页

作者： m.takeuchi,K.Yamanouchi,杨清宗日·东北大学电气通讯研究所日·东北大学电气通讯研究所

本文叙述由具有正、负反射系数的反射元构成的新型反射器.这类反射器具有反射率大、阻带宽、体波模转换小的优点.叙述了实现有效反射的工作原理和可采用的结构,给出了常用的几种SAW基片的有用的设计数据.对机械负载反射器的辐射体波模... 详细信息

本文叙述由具有正、负反射系数的反射元构成的新型反射器.这类反射器具有反射率大、阻带宽、体波模转换小的优点.叙述了实现有效反射的工作原理和可采用的结构,给出了常用的几种SAW基片的有用的设计数据.对机械负载反射器的辐射体波模的转换特性进行了理论研究;用金属条反射栅作的实验结果表明,这种新型反射器具有很强的反射性能.此外,采用新式反射栅结构的实验性100mHz单端对谐振器由于存在聚能模而具有无假响应的清晰的谐振响应.制作在SiO2/128°Y-X LiNbO3层状基片上的谐振器还具有很小的电容比（=30）,其一阶温度频率系数为零.

关键词：谐振器电容共振器 SAW 反射器反射系数

膀胱癌:扩散加权mRI——诊断T分期和评估组织学分级的准确性

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国际医学放射学杂志 2009年第3期 288-289页

作者： m.takeuchi S.Sasaki m.Ito S.Okada T.Kawai 谭艳 Department of Radiology Nagoya City University Graduate School of Medical Science1 Kawasumi Mizuho-choMizuho-kuNagoya 467-8601Japan Department of Radiology Nagoya City University Graduate School of Medical Science1 Kawasumi Mizuho-choMizuho-kuNagoya 467-8601Japanshi

目的前瞻性评估扩散加权(DW)mRI在确定膀胱癌T分期能力和检测表观扩散系数(ADC)与组织学分级之间的联系。方法该研究已获得机构伦理委员会的批准,所有病人均已签署同意书。40例病人共有52个膀胱肿瘤,均进行包括DWI的mRI检查。所有肿瘤... 详细信息

目的前瞻性评估扩散加权(DW)mRI在确定膀胱癌T分期能力和检测表观扩散系数(ADC)与组织学分级之间的联系。方法该研究已获得机构伦理委员会的批准,所有病人均已签署同意书。40例病人共有52个膀胱肿瘤,均进行包括DWI的mRI检查。所有肿瘤均有病理分级。2名放射学专家分析4组影像集(即仅T2WI,T2WI+DWI,T2WI+动态增强影像,T2WI+DWI+动态增强影像)。分析T2WI和增强影像用常规标准。对于DWI,采用新的分期标准,其是在假设肿瘤、黏膜下组织和肌肉分别显示高、低和中等信号的基础上制定的。

关键词：膀胱癌 ADC 膀胱肿瘤组织学分级扩散加权 mRI

采用活体质子mRS对高级别子宫肉瘤中脂质峰的初步观察及其临床价值

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国际医学放射学杂志 2013年第6期 591-591页

作者： m.takeuchi K.matsuzaki m.Harada 郭琪 Department of Radiology University of Tokushima 3-18-15 Kuramoto-choTokushima zip:7708503 Japan

摘要目的评估活体质子mRS成像中脂质峰对子宫肉瘤诊断的临床意义。方法对38例病理学诊断为子宫肿瘤(平滑肌瘤26例,肉瘤12例)的病人在3.0 T mR设备上行

关键词： mRI mRS 子宫肉瘤平滑肌瘤

卵巢肿瘤N-乙酰1共振活体质子3T mR波谱的前期观察及临床价值

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国际医学放射学杂志 2012年第1期 102-102页

作者： m.takeuchi K.matsuzaki m.Harada 刘靖 Department of Radiology University of Tokushima3-18-15Kuramoto-choTokushima 7708503Japan

目的回顾性评价N-乙酰1在2ppm(ppm表示10-6)时活体质子mR波谱鉴别卵巢占位病人黏液和非黏液肿瘤的临床意义。方法对病理诊断卵巢肿瘤的病人进行3TmR波谱成像。从围绕卵巢肿块的单个感兴趣立方体采集单

关键词： mRI mR波谱卵巢肿瘤 N-乙酰黏液化合物定量评估

利用3T mR质子波谱鉴别子宫体肿瘤的良恶性:初步研究

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国际医学放射学杂志 2011年第3期 305-305页

作者： m.takeuchi K.matsuzaki m.Harada 李宁 Department of Radiology University of Tokushima

目的回顾性评价磁共振波谱(mRS)对mRI上所见的子宫体肿瘤的良恶性的鉴别诊断能力。方法经病理学确诊子宫体部良恶性肿瘤的病人均进行盆腔3 T mRS检查。收

关键词： mRI 磁共振波谱子宫体肿瘤胆碱化合物定量评价

Protective effect of Irsogladine on monochloramineinduced gastric mucosallesions in rats:a comparative study with rebamipide

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World Journal of Gastroenterology 1999年第6期5卷 477-482页

作者： H Yamamoto, m Umeda, H mizoguchi, S Kato and K takeuchi Kyoto Phamaceutical University 日本

AIm To examine the effect of irsogladine, a novel antiulcer drug, on the mucosal ulcerogenic response to monochloramine (NH 2Cl) in rat stomach, in comparison with rebamipide, another antiulcer drug with cytoprotective activity. mETHODS AND RESULTS Oral administration of NH 2Cl (120*!mm) produced severe hemorrhagic lesions in unanesthetized rat stomachs. Both irsogladine ( 1*!mg/*!kg - 10*!mg/*!kg , po ) and rebamipide ( 30*!mg/*!kg - 100*!mg/*!kg , po ) dose dependently prevented the development of these lesions in response to NH 2Cl, the effect of irsogladine was significant at 3*!mg/*!kg or greater, and that of rebamipide only at 100*!mg/*!kg . The protective effect of irsogladine on NH 2Cl induced gastric lesions was significantly reduced by N G nitro L arginine methyl ester (L NAmE) but not by indomethacin, while that of rebamipide was significantly mitigated by indomethacin but not by L NAmE. Topical application of NH 2Cl (20*!mm) caused a marked reduction of potential difference (PD) in ex vivo stomachs. This PD reduction was not affected by mucosal application of irsogladine, but significantly prevented by rebamipide. The mucosal exposure to NH 4OH (120*!mm) also caused a marked PD reduction in the ischemic stomach (bleeding from the carotid artery), resulting in gastric lesions. These ulcerogenic and PD responses caused by NH 4OH plus ischemia were also significantly mitigated by rebamipide, in an indomethacin sensitive manner, while irsogladine potently prevented such lesions without affecting the PD response, in a L NAmE sensitive manner. CONCLUSION These results suggest that ① NH 2Cl generated either exogenously or endogenously damages the gastric mucosa, ② both irsogladine and rebamipide protect the stomach against injury caused by NH 2Cl, and ③ the mechanism underlying the protective action of irsogladine is partly mediated by endogenous nitric oxide, while that of rebamipide is in part mediated by endogenous prostaglandins.

关键词： irsogladine rebamipide monochloramine gastric mucosal lesions rats comparative study

machine learning super-resolution of laboratory CT images in all-solid-state batteries using synchrotron radiation CT as training data

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Energy and AI 2023年第4期14卷 612-619页

作者： m.Kodama A.takeuchi m.Uesugi S.Hirai Tokyo Institute of Technology 2-12-1 OokayamaMeguro-kuTokyo 152-8550Japan Japan Synchrotron Radiation Research Institute(JASRI/SPring-8) 1-1-1 KoutoSayoHyogo 679-5198Japan

High-performance all-solid-state lithium-ion batteries require observation,control,and optimization of the electrode structure.X-ray computational tomography(CT)is an effective nondestructive method for observing the electrode structure in three ***,the limited availability of synchrotron radiation CT,which offers high-resolution imaging with a high signal-to-noise ratio,makes it difficult to conduct experiments and restricts the use of X-ray CT in battery ***,laboratory CT systems are widely available,but they use X-rays emitted from a metal target,resulting in lower image quality and resolution compared with synchrotron radiation *** study explores a method for achieving comparable resolution in laboratory CT images of all-solid-state batteries to that of synchrotron radiation *** method involves using the synchrotron radiation CT images as training data for machine learning *** results demonstrate that,by employing an appropriate machine learning algorithm and activation function,along with a sufficiently deep network,the image quality of laboratory CT becomes equivalent to that of synchrotron radiation CT.

关键词： All-solid-state lithium-ion battery X-ray CT Laboratory CT Synchrotron radiation CT Super-resolution machine learning

Influence of bromoalkyloxy side chain on mesomorphic behavior in heterocyclic 7-(4-bromoalkyloxy)-3-(4′-decyloxyphenyl)-4H- 1-benzopyran-4-ones

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Chinese Chemical Letters 2011年第8期22卷 947-950页

作者： Guan Yeow Yeap Tze Nee Chan Wan Sinn Yam Daisuke takeuchi masato m.Ito Liquid Crystal Research Laboratory School of Chemical SciencesUniversity Sains Malaysia11800 MindenMalaysia Chemical Resources Laboratory(mailbox RI-03) Tokyo Institute of Technology 4259 NagatsutaMidori-kuYokohama 226-8503Japan Department of Environmental Engineering for Symbiosis Faculty of EngineeringSoka UniversityHachiojiTokyo 192-8577Japan

A new homologous series of isoflavone-based ethers,7-（4-bromoalkyloxy）-3-（4＇-decyloxyprienyl）-4H-1-benzopyran-4-ones were synthesized and *** mesomorphic properties of all homologues were investigated by differential scanning calorimetry（DSC） and polarizing optical microscopy（POm）.Enantiotropic smectic A（SmA） phase was observed for all *** structure-property study was carried out by comparing the mesomorphic behavior of the homologues with those previously reported *** bromine atom from the alkyloxy side chain of the benzene ring fused to the heterocyclic moiety was found to be capable of changing the mesomorphic properties.

关键词： Heterocyclic Isoflavone Enantiotropic

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Evaluation of precipitation behavior of zirconium molybdate hydrate

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Frontiers of Chemical Science and Engineering 2013年第1期7卷 65-71页

作者： Liang ZHANG masayuki takeuchi Tsutomu KOIZUmI Izumi HIRASAWA Graduate School of Applied Chemistry Faculty of Science and Engineering Waseda University Tokyo 169-8555 Japan Japan Atomic Energy Agency Ibaraki 319-1194 Japan

In the dissolution step of spent nuclear fuel, there is a world-concern problem that zirconium molybdate hydrate precipitates as a byproduct, and accumulates in some reprocessing equipments. In order to prevent this accumulation, we have developed a new method based on the controlled reaction crystallization of zirconium molybdate hydrate （ZmH） in the reprocessing solution, followed by solid liquid separation. In order to measure the particle size of ZmH, batch crystallization experiments were conducted by varying nitric acid concentration and operating temperature. In result, almost all particle sizes scatter around 1μm on average, despite the higher concentration of nitric aid and operating temperature, and then small particles grow up as an aggregate sticking to the crystallizer. moreover, polymorph and color changing were observed by varying the concentration of nitric acid and reaction time. These results suggest that crystal color and adhesiveness are closely related to the particle size of ZmH. And the control of nitric acid concentration and small particle growth would be the useful technique to prevent the ZmH sticking.

关键词： spent nuclear fuel zirconium molybdate hydrate cleaning method accumulation