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Study on styrene grafting onto per-fluorinated polymers——effects of irradiation and reaction conditions

RadTech Asia 2005

作者： Yukari Numata Akihiro Oshima Keitaro Aimi Shinji Ando Katsuyoshi Murata Hiroyuki Kono masakazu washio Etsuko Katoh Department of Biochemistry National Institute of Agrobiological Science （NIAS） 2-1-2 Kannondai Tsukuba Ibaraki 305-8602Japan Advanced Research Institute for Science and Engineering Waseda University 3-4-1 Okubo Shinjuku-ku Tokyo 169-8555Japan Department of Organic and polymeric Materials Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku Tokyo152-8552 Japan Department of Organic and polymeric Materials Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku Tokyo152-8552 Japan Department of Biochemistry National Institute of Agrobiological Science （NIAS） 2-1-2 Kannondai Tsukuba Ibaraki 305-8602 Japan Bruker BioSpin Company Ltd. Ninomiya 3-21-5 Tsukuba Ibaraki 305-0051 Japan Advanced Research Institute for Science and Engineering Waseda University 3-4-1 Okubo Shinjuku-ku Tokyo 169-8555Japan Department of Biochemistry National Institute of Agrobiological Science （NIAS） 2-1-2 Kannondai Tsukuba Ibaraki 305-8602Japan

＜正＞ We have investigated changes in chemical structures and molecular dynamics for electron beam（EB）-irradiated MPE/PTFE polymer-blend using solid-state NMR spectroscopy. Although 13the 13C MAS NMR spectra did not yield useful information regarding changes in the chemical structure of MPE/PTFE by the EB- irradiation, it was possible to obtain detailed structural information from the 19F MAS NMR spectra. The results indicate that 19F signals at -215 （-CFH- and/or -CFH2） and -140 ppm （-CF2H） for EB-irradiated MPE/PTFE are characteristic signals, which are not observed in independently irradiated PTFE. Furthermore, relaxation times for these samples were measured, and the results indicate that the molecular motion of the crystalline components of PTFE and MPE is altered by EB-irradiation. These NMR experimental results indicate that a chemical reaction occurred between MPE and PTFE, and that their molecular motion was significantly changed by irradiation.

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辐射研究与辐射工艺学报 2005年第2期23卷 103-103页

作者： Akio Matsuura Tomoyuki Kakigi Saneto Asano Fumihiro Mutou Akihiro Oshima masakazu washio Advanced Research Institute for Science and Engineering Waseda University Shinjuku Tokyo 169-8555 JapanAdvanced Research Institute for Science and Engineering Waseda University Shinjuku Tokyo 169-8555 JapanAdvanced Research Institute for Science and Engineering Waseda University Shinjuku Tokyo 169-8555 JapanAdvanced Research Institute for Science and Engineering Waseda University Shinjuku Tokyo 169-8555 JapanAdvanced Research Institute for Science and Engineering Waseda University Shinjuku Tokyo 169-8555 JapanAdvanced Research Institute for Science and Engineering Waseda University Shinjuku Tokyo 169-8555 Japan

Fuel cell is in focus as a very low exhaust new dynamo system. Especially polymer electrolyte fuel cells (PEFC) using proton exchange membranes (PEM) have attracted much attention for the electrical vehicle and other mobile applications such as cellar phone and personal computer. Conventional perfluoro-sulfonic acid membranes such as Nation() (DuPont de Nemours LTD.) have been the popular PEM used in PFEC. However, there are still several problems such as insufficient gas barrier properties, low thermal resistance, and their high *** this study, hawse have studied the partially fluorinated PEM for PEFC by radiation grafting onto per-fluorinated polymers such as PFA, FEP and ETFE with reactive styrene monomers using pre-irradiation grafting method in gas and in liquid phase, respectively, and successive sulfonation. Characteristic properties of the grafted and sulfonated materials have been discussed and optimized fabricating conditions were *** properties of the obtained materials have been measured by differential scanning calorimetry,thermogravimetric analysis and FT-IR spectroscopy, *** the case of irradiation in air, glass transition temperatures (Tg) of the grafted materials depend on the yields of styrene grafting onto the materials. That is higher yields of grafting give lower thermal stability. On the other hand, when the peroxy radicals were converted trapped radicals by exposure in air after irradiation under oxygen-free atmosphere, Tg of the grafted materials hardly depends on the grafting ***, the yields of grafting in gas phase were higher than that of liquid phase. However, the sample form of grafting in gas phase has been greatly changed, whereas the sample form of grafting in liquid phase has kept its original ***, it is suggested that the fabricating conditions for PEFC membranes were preferred to irradiation under oxygen-free atmosphere and grafting in liquid *** exchange capacities of t

关键词： polymers effects and

Increase in colonic diverticular hemorrhage and confounding factors

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World Journal of Gastrointestinal Pharmacology and Therapeutics 2016年第3期7卷 440-446页

作者： Ken Kinjo Toshiyuki Matsui Takashi Hisabe Hiroshi Ishihara Shinichiro Maki Kenta Chuman Akihiro Koga Kensei Ohtsu Noritaka Takatsu Fumihito Hirai Kenshi Yao masakazu washio Department of Gastroenterology Fukuoka University Chikushi Hospital Department of Community Health and Clinical Epidemiology St.Mary’s College

AIM: To classify changes over time in causes of lower gastrointestinal bleeding(LGIB) and to identify factors associated with changes in the incidence and characteristics of diverticular hemorrhage(DH).METHODS: A total of 1803 patients underwent colonoscopy for overt LGIB at our hospital from 1995 to 2013. Patients were divided into an early group(EG, 1995-2006, n = 828) and a late group(LG, 2007-2013, n = 975), and specific diseases were compared between groups. In addition, antithrombotic drug(ATD) use and nonsteroidal anti-inflammatory drug(NSAID) use were comparedbetween patients with and without DH. RESULTS: Older patients(≥ 70 years old) and those with colonic DH were more frequent in LG than in EG(P < 0.01). Patients using ATDs as well as NSAIDs, male sex, obesity(body mass index ≥ 25 kg/m2), smoking, alcohol drinking, and arteriosclerotic diseases were more frequent in patients with DH than in those without. CONCLUSION: Incidence of colonic DH seems to increase with aging of the population, and factors involved include use of ATDs and NSAIDs, male sex, obesity, smoking, alcohol drinking, and arteriosclerotic disease. These factors are of value in handling DH patients.

关键词： Lower gastrointestinal bleeding Colonic diverticular hemorrhage Increase of incidence Aging

Dietary <i>γ</i>-Aminobutyric Acid Shortens the Life Span of Stroke-Prone Spontaneously Hypertensive Rats

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Food and Nutrition Sciences 2011年第4期2卷 301-303页

作者： Nakamichi Watanabe Naomi washio 不详

Dietary γ-amino butyric acid (GABA) has been suggested to decrease systolic blood pressure. This study aimed to ex-amine the effects of dietary GABA on the life span of stroke-prone spontaneously hypertensive rats (SHRSPs). In this study, life span was determined for SHRSPs provided 1% NaCl solution or 0.01% GABA in 1% NaCl solution as drinking water. The life span of the GABA-fed group (76.3 ± 1.65 days) was significantly shorter than that of the control group (81.6 ± 0.88 days). The results of this study may not be applicable to humans. Future studies will be necessary to elucidate the mechanism underlying this phenomenon.

关键词： γ-Amino Butyric Acid Stroke-Prone Spontaneously Hypertensive Rat Life Span

Partial Volume Effect on MR Elastography

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Open Journal of Medical Imaging 2017年第4期7卷 131-143页

作者： Daiki Ito Tomokazu Numano Kazuyuki Mizuhara Toshikatsu washio Masaki Misawa Naotaka Nitta Department of Radiological Science Graduate School of Human Health Science Tokyo Metropolitan University Tokyo Japan Health Research Institute National Institute of Advanced Industrial Science and Technology Tsukuba Japan Office of Radiation Technology Keio University Hospital Tokyo Japan Department of Mechanical Engineering Tokyo Denki University Tokyo Japan

Magnetic resonance elastography (MRE) allows the quantitative assessment of the stiffness of tissues based on the tissue response to oscillatory shear stress. Shear wave displacements of the tissues are encoded as phase shifts and converted to stiffness (elastogram). Generally, a partial volume effect occurs when different materials are encompassed on the same voxel. In MRE, however, the partial volume effect occurs even if the voxel is filled with the same materials because wave displacements due to vibrations are spatially distributed. The purpose of this study was to investigate how the partial volume effect can affect the phase shift and the elastogram in MRE. We assumed that the partial volume effect appears only in the slice thickness direction and performed a simulation and MRE experiment with various slice thicknesses (1 - 19 mm), two types of imaging plane (coronal and axial) and two types of vibration frequency (100 and 200 Hz). The results of the simulation and the MRE experiment were similar, and indicated that the phase shift and the elastogram changed variously depending on the slice thickness, the wave pattern and the vibration frequency, even if the voxel was filled with the same material. To reduce the partial volume effect, it is necessary to perform the MRE under the following conditions: Use a wave pattern which barely causes this artefact, a smaller voxel size and a lower vibration frequency.

关键词： Magnetic Resonance Elastography Partial Volume Effect Artefact Elasticity Viscoelasticity

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日本水稻直播栽培及其技术展望

福建稻麦科技 1992年第4期10卷 61-64页

作者： Osamu washio 黄育民

一、直播栽培简史在江户时代(1603～1868),移栽方式为日本主要的稻作栽培方式。当时仅在某些特殊的情况下才有直播栽培,如渍水田和缺乏灌溉条件的稻田。本世纪40年代后期战争造成日本农区面临劳力不足,直播栽培方式一时受到重视。但发... 详细信息

一、直播栽培简史在江户时代(1603～1868),移栽方式为日本主要的稻作栽培方式。当时仅在某些特殊的情况下才有直播栽培,如渍水田和缺乏灌溉条件的稻田。本世纪40年代后期战争造成日本农区面临劳力不足,直播栽培方式一时受到重视。但发芽成苗率低,除草难度大,产量低。由于当时的主要问题是增加粮食生产,随着农村劳力状况的改善。

关键词：水稻直播栽培直播稻直播方式稻作旱直播移栽方式水稻直播技术灌溉条件水稻栽培江户时代

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离心压气机不稳定特性的研究

动力工程 2006年第2期26卷 196-200页

作者：顾春伟山口和夫长岛利夫清华大学热能工程系北京100084 东京大学航空航天系

采用实验方法研究了高速离心压气机的流动不稳定特性———失速与喘振。实验中采用了平板叶型扩散器和双圆弧叶型扩散器。通过在流向和周向布置的多个压力测点,详细地观察了小流量下的流场不稳定特性。实验结果表明,在转速30000 r/min... 详细信息

采用实验方法研究了高速离心压气机的流动不稳定特性———失速与喘振。实验中采用了平板叶型扩散器和双圆弧叶型扩散器。通过在流向和周向布置的多个压力测点,详细地观察了小流量下的流场不稳定特性。实验结果表明,在转速30000 r/min的条件下,失速总是出现在喘振之前。但是在转速50000 r/min的条件下,带有双圆弧叶型扩散器的压气机直接进入喘振。根据所测得的压力信号,采用混沌方法分析了失速与喘振的非线性特征。

关键词：动力机械工程压气机失速端振相空间的轨迹

Efficacy of Inchinkoto for Liver Cirrhosis in an Infant with Down Syndrome Complicated by Transient Myeloproliferative Disorder

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Open Journal of Pediatrics 2017年第1期7卷 26-31页

作者： Ryuta washio Masaya Takahashi Sohsaku Yamanouchi Masato Hirabayashi Kenji Mine Yukihiro Noda Eriko Kanda Atsushi Ohashi Hirohide Kawasaki Kazunari Kaneko Department of Pediatrics Kansai Medical University Osaka Japan

Several patients with Down syndrome complicated by transient myeloproliferative disorder may develop liver cirrhosis for which no effective therapeutic agent exists. We report the infant with Down syndrome complicated by transient myeloproliferative disorder and liver cirrhosis who was successfully treated by Inchinkoto, the Japanese herbal medicine. In the present case, Inchinkoto appeared to prevent both histological and serological aggravation of liver cirrhosis. To the best of our knowledge, this is the first report of preventive effect of Inchinkoto on liver cirrhosis, and it can be a choice of treatment for infants with Down syndrome complicated by liver cirrhosis.

关键词： Inchinkoto Transient Myeloproliferative Disorder Down Syndrome Liver Fibrosis Japanese Herbal Medicine

Micro fabrication and surface modification of fluorinated polymers by means of Synchrotron Radiation

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Micro fabrication and surface modification of fluorinated po...