检索结果-南通市图书馆

Effects of Cu,Fe and Co addition on the glass-forming ability and mechanical properties of Zr-Al-Ni bulk metallic glasses

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2012年第12期55卷 2367-2371页

作者： LI YanHui ZHANG Wei DONG Chuang AKIHIRO makino School of Materials Science and Engineering Dalian University of TechnologyDalian 116024China Institute for Materials Research Tohoku UniversitySendai 980-8577Japan

The thermal stability,glass-forming ability(GFA) and mechanical properties of Zr60Al15Ni25xTMx(TM = Cu,Fe and Co,x = 0-10) bulk metallic glasses(BMGs) were systematically *** 5-10 at.% Cu greatly enhances the thermal stability and GFA of the base ***60Al15Ni15Cu10 BMG exhibits the largest supercooled liquid region of 104 K and critical diameter of 18 ***,addition of 5-10 at.% Fe or Co decrease the thermal stability and *** addition,the plasticity of the BMG can be improved by adding of Cu,while the strength is decreased ***60Al15Ni20Cu5 BMG has the largest plastic strain of 5.5% with a yield stress of 1755 MPa and Young's modulus of 83 *** of Co brings an increase of strength but a lower of plasticity,and additional Fe reduces the strength and plasticity simultaneously.

关键词： bulk metallic glasses glass-forming ability mechanical properties Zr-Al-Ni alloys

Roles of rare earth oxide additives in millimeter-wave sintering of AlN

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2008年第2期26卷 141-145页

作者： Yukio makino Takashi Yoshioka Hiromi Nakano Toshiyuki Ueno Shoji Miyake Osaka University 11-1 Mihogaoka IbarakiOsaka 567-0047 Japan Shimane Institute for Industrial Technology 1 Hokuryo-cho Matsue Simane 690-0816 Japan Ryukoku University Seta Otsu Shiga 520-2194 Japan Kinki University 3-4-1 Kowakae Higashi-OsakaOsaka 577-8502 Japan

Roles of rare earth oxide （RE2O3） additives in millimeter-wave（MM） sintering of AIN were investigated from the standpoints of phase diagram, heating characteristics of rare earth oxides, and morphology of intergranular oxide phase. In the millimeter-wave sintering of AIN, densification temperature decreased with the decrease of the ionic radius of rare earth ion and was closely related with the eutectic temperature in the RE2Oa-Al2O3 binary system. The lowest densification temperature in the millimeter-wave sintering of AIN with Yb2O3 additive was attributed to the largest heating rate of Yb2O3-Al2O3 binary oxide under millimeter-wave radiation. Furthermore, the lowest densification temperature could be attained while selecting the Yb2O3 content so as to form the intergranular phase with the eutectic composition in the Yb2O3-Al2O3 binary system. The result showed good agreement with the above mentioned during the sintering of Si3N4 with Yb2O3-Al2O3 additive. From TEM observation, it was verified that film-like intergranular oxide phase formed under millimeter-wave radiation was favorable for attaining high thermal conductivity in the Yb2O3 added AINs.

关键词： millimeter-wave rare earth oxide AIN, Si3N4 rapid densification selective heating heating rate thermal conductivity morphology

Selection of Suitable Maximum-heart-rate Formulas for Use with Karvonen Formula to Calculate Exercise Intensity

在线全文

学校读者我要写书评

暂无评论

International Journal of Automation and computing 2015年第1期12卷 62-69页

作者： Jinhua She Hitoshi Nakamura Koji makino Yasuhiro Ohyama Hiroshi Hashimoto Graduate School of Bionics Computer and Media Sciences Tokyo University of Technology 1404-1 KatakuraHachioji Tokyo 192-0982 Japan Interdisciplinary Graduate School of Medical and Engineering University of Yamanashi4-3-11 Takeda Kofu 400-8511 Japan Master Program of Innovation for Design and Engineering Advanced Institute of Industrial Technology 1-10-40 HigashiooiShinagawa-ku Tokyo 140-0011 Japan

The Karvonen formula, which is widely used to estimate exercise intensity, contains maximum heart rate, H Rmax, as a variable. This study employed pedaling experiments to assess which of the proposed formulas for calculating H Rmaxwas the most suitable for use with the Karvonen formula. First, two kinds of experiments involving an ergometer were performed: an all-in-one-day experiment that tested eight pedaling loads in one day, and a one-load-per-day experiment that tested one load per day for eight days.A comparison of the data on 7 subjects showed that the all-in-one-day type of experiment was better for assessing H Rmaxformulas,at least for the load levels tested in our experiments. A statistical analysis of the experimental data on 47 subjects showed two of the H Rmaxformulas to be suitable for use in the Karvonen formula to estimate exercise intensity for males in their 20 s. In addition, the physical characteristics of a person having the greatest impact on exercise intensity were determined.

关键词： Borg CR10 scale Karvonen formula exercise intensity maximum heart rate pedaling statistical analysis

Correlation between the glass-forming ability and activation energy of crystallization for Zr_(75-x)Ni_(25)Al_x metallic glasses

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2013年第5期20卷 445-449页

作者： Yan-hui Li Wei Zhang Chuang Dong Jian-bing Qiang Akihiro makino School of Materials Science and Engineering Dalian University of Technology Institute for Materials Research Tohoku University

The thermal stability and the kinetics of glass transition and crystallization for Zr75-xNi25Alx （x = 8-15） metallic glasses were investigated using differential scanning calorimetry （DSC） under continuous heating conditions. The apparent activation energy of glass transition rises monotonously with the A1 content increasing; the activation energy of crystallization increases with A1 changing from 8at% to 15at%, and then decreases with A1 further up to 24at%, which exhibits a good correlation to the thermal stability and the glass-forming ability （GFA）. The Zr60Ni25A115 metallic glass with the largest supercooled liquid region and GFA possesses the highest activation energy of crystallization. The relation between the thermal stability, GFA and activation energy of crystallization was discussed in terms of the primary precipitated phases.

关键词： metallic glass thermal stability glass-forming ability crystallization kinetics activation energy

A new numerical simulation model for high pressure squeezing moulding

在线全文

学校读者我要写书评

暂无评论

China Foundry 2011年第1期8卷 25-29页

作者： Li Hua Wu Junjiao Huang Tianyou makino Hiroyasu Department of Mechanical Engineering Tsinghua University Beijing 100084 China SINTOKOGIO Ltd. Toyokawa Aichi Pref 4430021 Japan

High pressure squeeze is the most popular moulding process applied in modern moulding *** of the unique characters of moulding sand and nonlinearity of squeezing process,the mechanical model is of key importance for computer ***-Prager/Cap is a typical soil mechanical theory model and it was used to simulate the squeezing process in this study,while ABAQUS software is used to simulate dynamic stress/strain evolution during the *** simulation agrees well with the experimental *** conclude that Drucker-Prager/Cap is an appropriate model for the squeezing compaction of moulding sand,and that the associated nonlinearity can be solved well with ABAQUS software.

关键词： high pressure squeeze Drucker-Prager/Cap ABAQUS numerical simulation green sand moulding

Xanthogranulomatous cholecystitis mimicking gallbladder carcinoma with a false-positive result on fluorodeoxyglucose PET

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2009年第29期15卷 3691-3693页

作者： Isamu makino Takahiro Yamaguchi Nariatsu Sato Toshiaki Yasui Ichiro Kita Department of Surgery Kanazawa Social Insurance Hospital Kanazawa Ishikawa 920-8610 Japan

Recently, several reports have demonstrated that fluorine-18 fluorodeoxyglucose positron emission tomography （FDG-PET） is useful in differentiating between benign and malignant lesions in the gallbladder. However, there is a limitation in the ability of FDG-PET to differentiate between inflammatory and malignant lesions. We herein present a case of xanthogranulomatous cholecystitis misdiagnosed as gallbladder carcinoma by ultrasonography and computed tomography. FDG-PET also showed increased activity. In this case, FDG-PET findings resulted in a false-positive for the diagnosis of gallbladder carcinoma.

关键词： Fluorodeoxyglucose F18 Positron-emissiontomography Xanthogranulomatous cholecystitis Gallbladder cancer

An Autopsy Case of Suspected Anti‑N‑Methyl‑D‑Aspartate Receptor Encephalitis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Forensic Science and Medicine 2019年第4期5卷 213-216页

作者： Kino Hayashi Wakako Hikiji Yohsuke makino Hisaomi Suzuki Tokyo Medical Examiner’s Office TokyoJapan Department of Forensic Medicine The University of TokyoTokyoJapan National Hospital Organization Shimofusa Psychiatric Medical Center ChibaJapan

N-methyl-D-aspartate receptor(NMDAR)encephalitis is a rare type of autoimmune limbic ***,we report an autopsy case of highly suspected anti‑NMDAR encephalitis,based on the patient’s past psychiatric history and autopsy findings of bilateral hippocampal sclerosis and ovarian *** found that it can be difficult to accurately diagnose autoimmune encephalitis at postmortem forensic autopsy without a case history and background information.

关键词： Anti-N-methyl-D-aspartate receptor encephalitis drowning epilepsy forensic autopsy case hippocampal sclerosis

Evaluation Method of the Gait Motion Based on Self-organizing Map Using the Gravity Center Fluctuation on the Sole

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Automation and computing 2017年第5期14卷 603-614页

作者： Koji makino Masahiro Nakamura Hidenori Omori Yoshinobu Hanagata Shohei Ueda Kyosuke Nakagawa Kazuyoshi Ishida Hidetsugu Terada Graduate School of Engineering University of YamanashiKofuYamanashi 400-8511Japan Kofu Municipal Hospital KofuYamanashi 400-0832Japan

This paper describes the evaluation method of the gait motion in walk rehabilitation. We assume that the evaluation consists of the classification of the measured data and the prediction of the feature of the gait motion. The method may enable a doctor and a physical therapist to recognize the condition of the patients more easily, and increase the motivation of patient further for rehabilitation. However, it is difficult to divide the gait motion into discrete categories, since the gait motion continuously changes and does not have the clear boundaries. Therefore, the self-organizing map （SOM） that is able to arrange the continuous data on the almost continuous map is employed in order to classify them. And, the feature of the gait motion is predicted by the classification. In this study, we adopt the gravity-center fluctuation （GCF） on the sole as the measured data. First, it is shown that the pattern of the CCF that is obtained by our developed measurement system includes the feature of the gait motion. Secondly, the relation between the pattern of the GCF and the feature of the gait motion that the doctor and the physical therapist evaluate by visual inspection is considered using the SOM. Next, we describe the prediction of following features measured by numerical values： the length of stride, the velocity of walk and the difference of steps that are important for the doctor and the physical therapist to make a diagnosis of the condition of the gait motion in walk rehabilitation. Finally, it is investigated that the position of a new test data that is arranged on the map accords with the prediction. As a consequence, we confirm that the method using the SOM is often useful to classify and predict the condition of the patient.

关键词： Gait motion self-organizing map (SOM) rehabilitation evaluation method gravity center fluctuation (GCF).

Study of the Conditions Surrounding Fatigue That Are Common to Medical Professionals Working in Emergency and Critical Care Centers in Japan

在线全文

学校读者我要写书评

暂无评论

Health 2020年第1期12卷 27-37页

作者： Natsuko makino Department of Nursing School of Health Sciences Sapporo Medical University Sapporo Japan

This study aimed to clarify the conditions surrounding fatigue that are common to medical professionals working in emergency and critical care centers in Japan. Semi-structured interviews were conducted with eight professionals ranging from doctors, nurses and pharmacists to clinical engineering technologists and radiation technologists. Their narratives were analyzed using the qualitative descriptive approach to determine fatigue common to all professionals and the reasons behind it. The five categories that emerged as the reasons for fatigue common to the subjects were [playing one’s role in treatment and procedures for emergency and critical patients], [accommodating the patient’s background and coming to terms with the outcome], [difficulties in liaising with other professionals], [feeling pressure as a responsible professional in emergency care] and [loss of sense of time caused by variable working hours]. The results revealed that fatigue common to all of the subjects was related to dealing with patients, coordinating with other professionals, having professional responsibilities and the working environment. This study suggests that arrangements to improve the working environment, ensure adequate staffing, and provide mental health support for the well-being of medical professionals working in emergency and critical care centers are necessary.

关键词： Fatigue Medical Professionals Emergency and Critical Care Centers