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Plasma preparation method and tribological properties of diamond-like carbon coating on magnesium alloy AZ31 substrate

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Science China(Technological Sciences) 2019年第11期62卷 1939-1947页

作者： HAN BeiBei JU DongYing sato susumu ZHAO HuiJun Department of Electronic Engineering Graduate School of EngineeringSaitama Institute of TechnologyFukaya 369-0293Japan Advanced Science Institute Saitama Institute of TechnologyFukaya 369-0293Japan Ningbo Institute of Materials Industry Innovation Ningbo 315033China School of Mechanical Engineering Hangzhou Dianzi UniversityHangzhou 310018China Department of Information System Saitama Institute of TechnologyFukaya 369-0293Japan

Magnesium alloys are light weight and exhibit good recyclability but suffer from low hardness and wear *** this study,the hardness and wear resistance of AZ31 magnesium alloy were improved by depositing diamond-like carbon(DLC)films as hard protective coatings using ion-beam-enhanced deposition with various CH4/H2 ratio,gas flow rates and accelerating *** supporting effect of the magnesium alloy was enhanced by the production of a graded interfacial layer which is composed of film atoms and substrate *** composition and mechanical properties of the DLC coatings were characterized using scanning electron microscopy(SEM),Raman spectroscopy,Rockwell test and *** tribological properties of the coating were also investigated using a frictional surface microscope with an in situ observation system and friction force *** DLC films were characterized by a lower intensity ratio of the D-peak to G-peak(ID/IG),higher hardness,and improved tribological properties when deposited at a lower accelerating voltage(6 kV).At the CH4/H2 ratio of 1:99 and 6 sccm/6 kV,minimum ID/IG values of 0.62,relatively low friction force value of 0.12 N,and a maximum hardness of 4056HV were attained *** addition,the DLC film exhibited improved wear resistance and a shallower wear track at this condition.

关键词： DLC film magnesium alloy plasma preparation hardness wear resistance

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WISE Infrared Search for Young Stellar Objects Associated with Starless Cores

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International Journal of Astronomy and Astrophysics 2023年第2期13卷 89-111页

作者： susumu sato Yuri Iwamoto Yoichi Itoh Nishi-Harima Astronomical Observatory Center for Astronomy University of Hyogo Hyogo Japan

This study presents the results of an infrared search of young stellar objects (YSOs) associated with cores with high optical extinction and no associated infrared IRAS source. Four hundred YSO candidates were identified in the WISE photometric catalog based on the infrared excess attributed to the circumstellar materials and proto-planetary disks. One-hundred and forty-nine cores do not have YSO candidates. Whereas, 32 cores harbor only Class I candidates and 107 cores have Class II candidates. Ninety-one cores that were previously identified as starless cores, were found to contain YSOs. The ratio of the number of starless cores to the number of star-forming cores suggests that the typical timescale from molecular cloud core formation to the birth of a star is in the range of 0.5 - 1.4 Myr.

关键词： Stars: Formation ISM: Clouds Infrared: Stars

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Open Journal of Epidemiology 2013年第2期3卷 33-39页

作者： susumu sato Shinichi Demura Toshiro sato Kenji Takahashi Graduate School of Natural Science and Technology Kanazawa University Kanazawa Japan Kanazawa Institute of Technology Nonoichi Japan Niigata University of Health and Welfare Niigata Japan Teikyo Heisei University Ichihara Japan

This study aimed to determine age-related fall risk characteristics among 2324 Japanese community-dwelling elderly through comparisons between young-old and old-old populations. Fall risk characteristics associated with “physical function”, “disease and physical symptom”, “behavior and character”, and “environment” were evaluated, and whether each individual has a high-risk symptom for each risk factor was assessed. The frequencies of individuals for all 16 risk types, which were determined by a combination of the four risk factors, were calculated. The prevalence of each risk type and the incidence of falling in each risk type were calculated within the young-old and old-old groups, and significant differences between these percentages were examined using the chi-square test. The prevalence of the no high-risk symptom group was significantly lower in the old-old group (17.0%) than in the young-old group (45.2%). Although there was no significant difference in the prevalence of the single high-risk symptom group, the prevalence of the two or more high-risk symptom groups was significantly higher in the old-old group. The incidence of fall among the elderly with high-risk symptoms did not change with age, although the incidence of fall with no high-risk symptom increased in the old-old group. Furthermore, high prevalence was observed in risk types with high-risk symptoms for “physical function” and “behavior and character”, particularly in the symptoms of gait, going up and down stairs, and fear of falling. These age-related differences are interesting and meaningful.

关键词： Prevalence of High-Risk Symptom Incidence of Fall Fall Risk Type

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Risk assessment of and targeted intervention for falls in the elderly based on the relationship between physical function levels and risk factors for falls

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Advances in Aging Research 2013年第3期2卷 87-93页

作者： susumu sato Shinichi Demura Masanobu Uchiyama Akita Prefectural University Akita Japan Graduate School of Natural Science and Technology Kanazawa University Ishikawa Japan Kanazawa Institute of Technology Ishikawa Japan

Although fall experience is an important predictor of future falls, clinicians place too much emphasis on this factor during risk assessment of falls. This study aimed to determine individuals with high and low fall risk on the basis of the relationship between physical function levels [competence in performing activities of daily living (ADL)] and risk factors for falls (fall experience, locomotive organ impairment, and potential for falling). Participants were 1057 independent community-dwelling elderly individuals. ADL competence and the status of risk factors for falls were evaluated using a questionnaire and the relationship between the two was determined. We calculated the cumulative relative frequency curves for ADL scores after categorizing the participants into several groups according to combinations of risk factors and analyzed those combinations that showed wide individual differences in the cumulative relative frequency curves. Intergroup differences when the participants were categorized on the basis of fall experience alone were small;however, those when the participants were categorized on the basis of locomotive impairment and potential for falling were much greater. On classifying the participants into eight groups on the basis of locomotive organ health, fall risk, and fall experience, we found that fallers with locomotive impairment and a high fall risk exhibited the lowest ADL scores while fallers without locomotive impairment and with a low fall risk exhibited the highest ADL scores. Fall risk assessments that are overtly dependent on fall experience are fundamentally limited. Grouping key risk factors can help in determining target groups, including highrisk fallers, low-risk fallers, and high-risk nonfallers, which require primary preventive measures among the community-dwelling elderly.

关键词： Locomotive Organ Impairment Fall Experience ADL Competence

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《方言疏证》及《重校方言》所引曹毅之本考

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汉语史学报 2006年第1期6卷 27-48页

作者：佐藤進日本東京都多摩市豊ケ丘5-3-5-203 206-0031

清代戴震校勘扬雄《方言》以後,校勘学家接连做起《方言》校订工作,取得了可喜的成绩。但是,他们都未能见到宋庆元刊本《方言》。戴震和卢文弨所用的宋本是所谓曹毅之本,即明代宋钞本之一种(已佚)。本文考察戴震和卢文弨对曹毅之本的不... 详细信息

清代戴震校勘扬雄《方言》以後,校勘学家接连做起《方言》校订工作,取得了可喜的成绩。但是,他们都未能见到宋庆元刊本《方言》。戴震和卢文弨所用的宋本是所谓曹毅之本,即明代宋钞本之一种(已佚)。本文考察戴震和卢文弨对曹毅之本的不同利用态度,并提出了对卢文弨所见庆元刊本《方言》的新观点。

关键词：方言疏证重校方言曹毅之本宋庆元刊本静嘉堂文库宋钞本

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聚合物分散液晶盒的相分离和电光特性(英文)

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液晶与显示 1993年第3期 65-73页

作者： Rumiko YAMAGUCHI,Shigenori SAISU,Naohiko Su Do,Toshiaki NOSE,susumu sato Department of Rloetronics Akita University Akitolo JAPAN Department of Rloetronics Akita University Akitolo JAPAN Department of Rloetronics Akita University Akitolo JAPAN Department of Rloetronics Akita University Akitolo JAPAN Department of Rloetronics Akita University Akitolo JAPAN

通过改变液晶的含量、固化温度以及紫外光强度研究了聚合物分散液晶(PDLC)盒的相分离。混合紫外光固化的聚合物基质和具有正介电各向异性的向列相液晶,并将混合物注入到以ITO玻璃为衬底的液晶盒中。然后,照射紫外光产生分离制成PDLC膜... 详细信息

通过改变液晶的含量、固化温度以及紫外光强度研究了聚合物分散液晶(PDLC)盒的相分离。混合紫外光固化的聚合物基质和具有正介电各向异性的向列相液晶,并将混合物注入到以ITO玻璃为衬底的液晶盒中。然后,照射紫外光产生分离制成PDLC膜。在紫外光照射液晶盒期间,测量了盒的电光特性与时间的依赖关系。利用激光衍射粒子尺寸分析仪,无破坏地测量了微滴尺寸及其分布与紫外光强的依赖关系。开始照射紫外光之后的某一特定期间,透过光强急剧下降,同时阻抗增大,电容开始增大然后下降。测量了紫外光强与PDLC盒电光特性的依赖关系并对其进行了讨论。

关键词： PDLC 紫外光强相分离聚合物分散液晶电光特性

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WISE Infrared Search for Young Stellar Objects Associated with Starless Cores

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International Journal of Astronomy and Astrophysics（天文学与天体物理学国际期刊） 2023年第2期

作者： susumu sato Yuri Iwamoto Yoichi Itoh

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Risk assessment of and targeted intervention for falls in the elderly based on the relationshipbetween physical function levels and risk factors for falls

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Advances in Aging Research（老年问题研究） 2013年第3期

作者： susumu sato Shinichi Demura Masanobu Uchiyama KanazawaInstituteofTechnology GraduateSchoolofNaturalScienceandTechnologyKanazawaUniversity AkitaPrefecturalUniversity

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Comparison between surgical outcomes of colorectal cancer in younger and elderly patients

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World Journal of Gastroenterology 2011年第12期17卷 1642-1648页

作者： Longxue Jin Norio Inoue Naoki sato susumu Matsumoto Hitoshi Kanno Yuko Hashimoto Kazuhiro Tasaki Kinya sato Shun sato Katsutoshi Kaneko Center for Digestive Diseases Northern Fukushima Medical Center Fukushima 960-0502 Japan Department of Pathology Fukushima Medical University Hospital Fukushima 960-1295 Japan Division of Anesthesiology Northern Fukushima Medical Center Fukushima 960-0502 Japan

AIM:To compare the outcome of surgical treatment of colorectal adenocarcinoma in elderly and younger ***:The outcomes of 122 patients with colorectal adenocarcinoma who underwent surgical treatment between January 2004 and June 2009 were *** clinicopathological and blood biochemistry data of the younger group(<75 years) and the elderly group (≥75 years) were ***:There were no significant differences between the two groups in operation time,intraoperative blood loss,hospital stay,time to resumption of oral intake,or *** elderly group had a significantly higher rate of hypertension and cardiovascular *** perioperative serum total protein and albumin levels were significantly lower in the elderly than in the younger *** serum carcinoembryonic antigen level was lower in the elderly than in the younger group,and there was a significant decreasing trend after the operation in the elderly ***:The short-term outcomes of surgical treatment in elderly patients with colorectal adenocarcinoma were *** treatment in elderly patients was considered a selectively effective approach.

关键词： Colorectal tumor Elderly patient Morbidity Carcinoembryonic antigen C-reactive protein

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Excessive portal flow causes graft failure in extremely small-for-size liver transplantation in pigs

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World Journal of Gastroenterology 2005年第44期11卷 6954-6959页

作者： Hong-Sheng Wang Nobuhiro Ohkohchi Yoshitaka Enomoto Masahiro Usuda Shigehito Miyagi Takeshi Asakura Hiroo Masuoka Takashi Aiso Keisuke Fukushima Tomohiro Narita Hideyuki Yamaya Atsushi Nakamura satoshi Sekiguchi Naoki Kawagishi Akira sato susumu satomi Division of Advanced Surgical Science and Technology Department of Surgery

AIM： To evaluate the effects of a portocaval shunt on the decrease of excessive portal flow for the prevention of sinusoidal microcirculatory injury in extremely smallfor-size liver transplantation in pigs. METHODS： The right lateral lobe of pigs, i.e. the 25% of the liver, was transplanted orthotopically. The pigs were divided into two groups： graft without portocaval shunt （n = 11） and graft with portocaval shunt （n = 11）. Survival rate, portal flow, hepatic arterial flow, and histological findings were investigated. RESULTS： In the group without portocaval shunt, all pigs except one died of liver dysfunction within 24 h afcer transplantation. In the group with portocaval shunt, eight pigs survived for more than 4 d. The portal flow volumes before and after transplantation in the group without portocaval shunt were 118.2±26.9 mL/min/100 g liver tissue and 270.5±72.9 ml./min/100 g liver tissue, respectively. On the other hand, in the group with portocaval shunt, those volumes were 124.2±27.8 ml./ min/100 g liver tissue and 42.7±32.3 mL/min/100 g liver tissue, respectively （P〈0.01）. As for histological findings in the group without portocaval shunt, destruction of the sinusoidal lining and bleeding in the peri-portal areas were observed afl：er reperfusion, but these findings were not recognized in the group with portocaval shunt. CONCLUSION： These results suggest that excessive portal flow is attributed to post transplant liver dysfunction after extreme small-for-size liver transplantation caused by sinusoidal microcirculatory injury.

关键词： Hyperperfusion syndrome Liver regeneration Portocaval shunt Postoperative liver dysfunction Sinusoidal microcirculatory injury Small-for-size liver transplantation

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