检索结果-南通市图书馆

Clinical and prognostic features in asymptomatic and symptomatic patients with arteriosclerosis obliterans

World Journal of Cardiovascular Diseases 2012年第1期2卷 1-7页

作者： Hiromichi Ohsaka Kazunori Shimada Kosuke Fukao Eiryu Sai Yoshifumi Fukushima Hiroshi Masuda Kuniaki Hirose Takuma Yoshihara Rie Matsumori Makoto Hiki Takashi Kiyanagi Atsumi Kume haruyo yamashita Tetsuro Miyazaki Hiroyuki Daida 不详

Background: Patients with arteriosclerosis obliterans (ASO) often have co-existing atherosclerotic diseases. The purpose of this study was to examine the clinical features of patients with ASO, including the overlap of atherosclerotic risk factors, characteristics of car-diovascular events, and clinical prognosis. Method: We enrolled 205 consecutive patients who had ankle brachial index (ABI) of ?0.9 between January 2008 and December 2009. Fontaine (F) classification and clinical background were evaluated and clinical events including mortality and major adverse cardiocerebro-vascular events (MACCEs) were determined. Results: There was a high prevalence of each risk factor. Sixty- five percent of subjects had three or more of the four overlapping risk factors, including hypertension, dia- betes, dyslipidemia, and smoking. After a maximum follow-up of 800 days, the incidence of MACCEs and mortality was 46% and 10%, respectively. We divided the patients into two groups according to the presence of ASO symptoms (F1 and F2-4) and compared the incidence of events. The incidence of MACCEs and mortality in the F2-4 group was significantly higher than that in the F1 group (P = 0.048, P = 0.044, respectively). After excluding lower extremity revascularization, coronary artery disease was a common cause of MACCEs, and the mortality rates after MACCEs increased in a stepwise manner according to F classification severity (P = 0.028). Conclusion: Patients with ASO had overlapping coronary risk factors and a high incidence rate of cardiovascular events. The incidence of coronary events was common, especially in symptomatic patients, and the mortality rates after MACCEs were high in accordance with F classification severity.

关键词： Arteriosclerosis Obliterans Fontaine Classification Risk Factor Mortality Cardiocerebrovascular Event

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Intraoperative glycemic control procedures and the use of an artificial pancreas

引用

World Journal of Gastroenterology 2009年第33期15卷 4126-4131页

作者： Koichi yamashita Tomoaki Yatabe Department of Anesthesiology and Critical Care Medicine Kochi Medical School

Strict intraoperative glycemic control can significantly decrease the incidence of postoperative infection; however, anesthesiologists must carefully control blood glucose levels as well as properly manage the respiratory and cardiovascular systems. However, standard blood glucose measurement systems and insulin dosing algorithms, which are necessary for achieving strict glycemic control, have not yet been developed. An artificial pancreas (STG-22TM; Nikkiso Co., Tokyo, Japan) is considered a highly accurate blood glucose monitoring system capable of closed-loop control of blood glucose. The device has, however, many problems to be addressed since it is a large and expensive system with little versatility, and it requires a large amount of blood to be collected. Therefore, the development of less invasive and inexpensive systems with future technological progress is greatly anticipated.

关键词： Strict glycemic control Artificial pancreas Anesthesiologist Sliding scale

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Study on the Rotor Design Method for a Small Propeller-Type Wind Turbine

引用

Journal of Thermal Science 2016年第4期25卷 355-362页

作者： Yasuyuki Nishi Yusuke yamashita Terumi Inagaki Department of Mechanical Engineering Ibaraki University Graduate School of Science and Engineering Ibaraki University

Small propeller-type wind turbines have a low Reynolds number,limiting the number of usable airfoil ***,their design method is not sufBciently established,and their performance is often *** ultimate goal of this research is to establish high-performance design guidelines and design methods for small propeller-type wind *** that end,we designed two rotors:Rotor A,based on the rotor optimum design method from the blade element momentum theory,and Rotor B,in which the chord length of the tip is extended and the chord length distribution is *** examined performance characteristics and flow fields of the two rotors through wind tunnel experiments and numerical *** results revealed that the maximum output tip speed ratio of Rotor B shifted lower than that of Rotor A,but the maximum output coefficient increased by approximately 38.7%.Rotors A and B experienced a large-scale separation on the hub side,which extended to the mean in Rotor *** difference in separation had an impact on the significant decrease in Rotor A's output compared to the design value and the increase in Rotor B's output compared to Rotor A.

关键词： Wind Turbine Propeller-Type Horizontal Axis Blade Element Momentum Theory Rotor Design Method

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Kinetic roughening transition and missing regime transition of melt crystallized polybutene-1 tetragonal phase: growth kinetics analysis

引用

Frontiers of Chemical Science and Engineering 2009年第2期3卷 125-134页

作者： Motoi yamashita College of Pharmaceutical Scincences Ritsumeikan University1-1-1 Noji-higashiKusatsuShiga 525-8577Japan

The morphology and lateral growth rate of isotactic polybutene-1(it-PB1)have been investigated for crystallization from the melt over a wide range of crystallization temperatures from 50 to 110℃.The morphology of it-PB1 crystals is a rounded shape at crystallization temperatures lower than 85℃,while lamellarsingle crystals possess faceted morphology at higher crystallization *** kinetic roughening transi-tion occurs around 85℃.The nucleation and growth mechanism for crystallization does not work below 85℃,since the growth face is ***,the growth rate shows the supercooling dependence derived from the nucleation and growth *** nucleation theory seems still to work even for rough surface *** mechanisms for the crystal growth of this polymer are discussed.

关键词： isotactic polybutene-1 tetragonal phase(form II) melt crystallization growth rate kinetic roughening morphology

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Genotype-phenotype relationship in hereditary amyotrophic lateral sclerosis

引用

Translational Neurodegeneration 2015年第1期4卷 92-104页

作者： Satoshi yamashita Yukio Ando Department of Neurology Graduate School of Medical SciencesKumamoto University1-1-1 HonjoKumamoto 860-8556Japan

Amyotrophic lateral sclerosis(ALS)is the most common adult-onset motor neuron *** is characterized by neuronal loss and degeneration of the upper motor neurons(UMNs)and lower motor neurons(LMNs),and is usually fatal due to respiratory failure within 3–5 years of *** approximately 5–10%of patients with ALS have an inherited form of the disease,the distinction between hereditary and apparently sporadic ALS(SALS)seems to be ***,genetic factors play a role in all types of ALS,to a greater or lesser *** the decade of upheaval,the evolution of molecular genetics technology has rapidly advanced our genetic knowledge about the causes of ALS,and the relationship between the genetic subtypes and clinical *** this review,we will focus on the possible genotype-phenotype correlation in hereditary *** the identity of the genetic factors in ALS will not only improve the accuracy of ALS diagnosis,but may also provide new approaches for preventing and treating the disease.

关键词： Amyotrophic lateral sclerosis(ALS) Genotype Phenotype Sporadic ALS(SALS) Familial ALS(FALS)

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Wide and Fast Wavelength-Swept Fiber Lasers Based on Dispersion Tuning and Their Application to Optical Coherence Tomography

引用

Photonic Sensors 2013年第4期3卷 320-331页

作者： Shinji yamashita Yuya TAKUBO Research Center for Advanced Science and Technology (RCAST) The University of Tokyo 4-6-1 Komaba Meguro-kuTokyo 153-8904 Japan

We recently proposed a new class of wavelength-swept lasers for swept-source optical coherence tomography （SS-OCT）. It uses the same gain medium with the conventional swept lasers, but does not require any tunable filters. It is based on a principle called ＂dispersion tuning＂, in which a highly dispersive medium is inserted in the laser cavity, and loss/gain modulation is applied to mode-lock the laser. Since the cavity contains no mechanical components, such as tunable filters, we could achieve the very high sweep rate. In this review paper, we describe the principle of the dispersion-tuned swept lasers in detail and present our recent work on the application to the SS-OCT system.

关键词： OCT swept lasers dispersion tuning

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Quality assessment of volunteered geographic information for outdoor activities:an analysis of OpenStreetMap data for names of peaks in Japan

引用

Geo-Spatial Information Science 2023年第3期26卷 333-345页

作者： Jun yamashita Toshikazu Seto Nobusuke Iwasaki Yuichiro Nishimura Faculty of Social and Cultural Studies Kyushu UniversityFukuokaJapan Faculty of Letters Komazawa UniversityTokyoJapan Sciences NAROInstitute for Agro-EnvironmentalTsukubaJapan Faculty of Letters Nara Women’s UniversityNaraJapan

Geographical studies of outdoor activities have increased in recent years with the rise in popularity of these activities worldwide,including in *** geographic information(VGI)is a key tool for organizing outdoor activities as it offers a means to determine the locational information and names of *** evaluate the quality of VGI,geospatial data generated by land survey agencies and other VGI are often utilized as reference ***,since these reference data may not be available,other methods are necessary to assure the quality of *** this study,we examined five trust indicators based on the inherent characteristics of VGI through an empirical case *** used mountain names extracted from OpenStreetMap in Japan as data because there were almost no other VGI in the *** a result,we isolated three trust indicators,namely versions,users,and tag corrections,to examine the thematic accuracy of VGI because these were the only statistically significant ***,we found that the prediction rate of thematic accuracy was very *** improve thematic accuracy,this study recommends using the most accurate versions,applying correctly given tags,and considering the motivations and characteristics of the VGI contributors.

关键词： Outdoor activities volunteered geographic information(VGI) OpenStreetMap(OSM) data quality assessment trust integrated usage

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Mechanism of Tonal Noise Generation from Circular Cylinder with Spiral Fin

引用

Journal of Thermal Science 2014年第6期23卷 552-557页

作者： Ryo yamashita Hidechito Hayashi Tetsuya Okumura Hiromitsu Hamakawa Department of Mechanical Engineering Nagasaki University1-14 Bunkyo machiNagasaki852-8521Japan Department of Mechanical Engineering Oita University700 Dannoharu Oita870-1192Japan

The pitch of the spiral finned tube influences seriously to the acoustic resonance in the heat *** this research,the flow characteristics in relating to the aeolian tone from the finned cylinder are studied by the numerical *** is observed that the tonal noise generated from the finned tube at two pitch *** ratio of the fin pitch to the cylinder diameter is changed at 0.11 and *** tone level increases and the frequency decreases with the pitch *** separation flow from the cylinder generates the span-wise vortices,Karman vortices,and the separation flow from the fin generates the stream-wise *** the fin pitch ratio is small,the stream-wise vortices line up to span-wise and become weak *** the Karman vortices are remained and integrate in *** the Karman vortex became *** causes the low frequency and the large aeolian tone.

关键词： Aerodynamic Noise Aeolian Tone Karman Vortex Spiral Finned Tube

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

KNOWLEDGE SYNTHESIS IN TECHNOLOGY DEVELOPMENT

引用

Journal of Systems Science and Systems Engineering 2009年第2期18卷 184-202页

作者： Yukihiro yamashita Yoshiteru NAKAMORI Andrzej P.WIERZBICKI School of Knowledge Science Japan Advanced Institute of Science and Technology 1-1 AsahidaiNomiIshikawa 923-1292Japan National Institute of Telecommunications Szachowa IWarsaw 04-894Poland

This paper introduces a knowledge construction model called the i-System for knowledge integration and creation and its relation to the new concept of the Creative Space. The five ontological elements of the i-System are Intelligence, Involvement, Imagination, Intervention, and Integration corresponding to five diverse dimensions of the Creative Space. The paper discusses the meanings and functions of these dimensions in knowledge integration and creation, and presents applications of the i-System to technology roadmapping and archiving.

关键词： Knowledge construction creative space technology roadmapping technology archiving

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Incorporation of europium (Ⅱ) nanostructures into the channels of mesoporous silicon oxy-nitride for enhanced photoluminescence

引用

Journal of Rare Earths 2018年第5期36卷 449-455页

作者： D. Suresh M. yamashita T. Akai a National Institute for Advanced Industrial Science and Technology （AIST） Kansai Center 1-8-31 Midorigaoka lkeda Osaka 563-8577 Japan 6 Department of Chemistry School of Chemical and Biotechnology SASTRA Deemed University Thanjavur 613 401 India

Divalent europium（Ⅱ）-doped mesoporous silicon oxy-nitride materials, as a novel type of nanoscopic photoluminescent material, are studied in which the optically active luminescent centers are isolated within the pores. Colorless and transparent blue emitting luminous Eu2＋-doped mesoporous silicon oxy-nitride materials were prepared from mesoporous silica via impregnation, nanocasting and nitrogen-assisted carbothermal reduction and nitridation method. The morphology and porosity of the silica remain unchanged during the synthesis process as revealed by SEM images and by nitrogen sorption studies. Photoluminescence studies reveal a strong blue emission band for Eu2＋ centered at 425 nm with a quantum efficiency of 47%. The luminescent intensity is greatly influenced by the amount of co-dopant, AI3＋ ions.

关键词： Blue luminescence Divalent europium Mesoporous silicon oxy-nitride Carbothermal reduction and nitridation(CRN) Rare earths

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：