检索结果-南通市图书馆

全国第8届天然药物资源学术研讨会

作者： sai-wang seto Yiu-Wa Kwan Li Ka Shing Institute of Health Sciences The Chinese University of Hong Kong Department of Pharmacology Faculty of MedicineThe Chinese University of Hong Kong

Scutellaria baicalensis Georgi("huang qin"),Ligusticum chuanxiong Hort.("chuang xiong"),Panax notoginseng(Burk.)***("san qi"),Uncaria rhynchophylla(Miq.)Jackson,("gou teng"),Rhokiola rosea L.("hong jing tian")and Stephania tetrandra ***("fang ji")are commonly used traditional Chinese medicine(TCM)for hypertensive *** pharmacologically active compounds found in these TCMs are:baicalin,ligustrazine, notoginsenoside R rhynchophylline,salidroside and tetrandrine,respectively,which possess anti-hypertensive properties with diverse cellular *** this study,we attempted to evaluate a possible correlation of the anti-oxidative activities(using the cell-free DPPH assay)and the vaso-relaxation effects(using rat isolated thoracic aorta)of these *** the anti-oxidative study,a relative order of free radical scavenging capacity(SR%)of:baicalin≥tetradrine >>salidroside≥ligustrazine≥rhynchophylline≈notoginsenoside R was *** the vaso-relaxing study,a relative order of the maximum relaxation response(at 3 mM)of:tetradrine>baicalin>>ligustrazine>notoginsenoside R≈rhynchophylline>salidroside was recorded.A positive correlation(R=0.7741)between the anti-oxidative activity and the vascular relaxation effect of the compounds evaluated was *** contrast,ascorbic acid only elicited a free radical scavenging activity with no apparent relaxation effect;whereas nifedipine(a Cachannel blocker)caused a marked vascular relaxation with no obvious free radical scavenging ***,our results suggest,for the first time,that the therapeutic effect(***-hypertensive)of these TCM-oriented drugs,unlike the Western medicine,are probably correlated with the unique anti-oxidative potential of these compounds.

关键词： Vaso-relaxation anti-hypertensive anti-oxidative activity traditional Chinese medicine

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Electrical stimulation for brighter persistent luminescence

引用

Light(Science & Applications) 2024年第8期13卷 1590-1601页

作者： Xilin Ma Yuhua wang Takatoshi seto Key Laboratory for Special Function Materials and Structural Design of the Ministry of Education National&Local Joint Engineering Laboratory for Optical Conversion Materials and Technology of National Development and Reform CommissionDepartment of Materials ScienceSchool of Materials and EnergyLanzhou UniversityNo.222South Tianshui RoadLanzhouGansu 730000China

An immature understanding of the mechanisms of persistent luminescence(PersL)has hindered the development of new persistent luminescent materials(PersLMs)with increased *** this regard,in-situ direct current(DC)electric field measurements were conducted on a layered structure composed of the SrAl_(2)O_(4):Eu^(2+),Dy^(3+)phosphor,and an *** this study,the photoluminescence(PL)and afterglow properties were investigated with respect to voltage by analyzing the current signal and thermoluminescence(TL)*** intensity of PersL increased due to a novel phenomenon known as“external electric field stimulated enhancement of initial brightness of afterglow”.This dynamic process was illustrated via the use of a rate equation approach,where the electrons trapped by the ultra-shallow trap at 0.022 eV could be transferred through the conduction band during long *** afterglow intensity could reach 0.538 cdm^(-2)at a 6 V electric *** design of an electric field stimulation technique enables the enhancement of the intensity of PersLMs and provides a new perspective for exploring the fundamental mechanics of certain established PersLMs.

关键词： spectroscopy luminescence conduction

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

Periodical shedding of cloud cavitation from a single hydrofoil in high-speed cryogenic channel flow

引用

Journal of Thermal Science 2009年第1期18卷 58-64页

作者： Yutaka ITO Koichi seto Takao NAGASAKI Tokyo Institute of Technology

In order to explain criteria for periodical shedding of the cloud cavitation, flow patterns of cavitation around a piano-convex hydrofoil were observed using a cryogenic cavitation tunnel of a blowdown type. Two hydrofoils of similarity of 20 and 60 mm in chord length with two test sections of 20 and 60 mm in width were prepared. Working fluids were water at ambient temperature, hot water and liquid nitrogen. The parameter range was varied between 0.3 and 1.4 for cavitation number, 9 and 17 m/sec for inlet flow velocity, and -8° and 8° for the flow incidence angle, respectively. At incidence angle 8°, that is, the convex surface being suction surface, periodical shedding of the whole cloud cavitation was observed on the convex surface under the specific condition with cavitation number and inlet flow velocity, respectively, 0.5, 9 m/sec for liquid nitrogen at 192℃ and 1.4, 11 m/sec for water at 88℃, whereas under the supercavitation condition, it was not observable. Periodical shedding of cloud cavitation occurs only in the case that there are both the adverse pressure gradient and the slow flow region on the hydrofoil.

关键词： cloud cavitation cryogen visualization hydrofoil

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

Chronic hepatitis B and metabolic risk factors:A call for rigorous longitudinal studies

引用

World Journal of Gastroenterology 2019年第3期25卷 282-286页

作者： Wai-Kay seto Department of Medicine the University of Hong Kong Queen Mary Hospital Department of Medicine the University of Hong Kong-Shenzhen Hospital State Key Laboratory for Liver Research the University of Hong Kong

Long-term nucleos(t)ide analogue therapy in chronic hepatitis B virus(HBV)infection is effective in suppressing viral replication and reducing liver-related complications. However, HBV-related liver events can still occur in different patient sub-groups. There is emerging evidence that, similar to chronic hepatitis C virus infection, metabolic risk factors may play a role in the disease process of chronic HBV. While the mechanistic nature of metabolic-HBV interactions remains uncertain, studies in different HBV-infected populations have demonstrated that hepatic steatosis, increased body-mass index, diabetes, or a combination of different metabolic risk factors are associated with an increased risk of hepatocellular carcinoma and cirrhosis. The impact of metabolic risk factors is especially prominent in patients with quiescent virological activity,including on-treatment patients with effective viral suppression. As the proportion of on-treatment chronic HBV patients increases worldwide,longitudinal studies determining the relative risks of different metabolic parameters with respect to clinical outcomes are needed. Future studies should also determine if metabolic-directed interventions can improve disease outcomes in chronic HBV.

关键词： Hepatitis B virus Diabetes Obesity Steatosis Non-alcoholic fatty liver disease Body-mass index

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

Krein space representation and Lorentz groups of analytic Hilbert modules

引用

Science China Mathematics 2018年第4期61卷 745-768页

作者： Yue Wu Michio seto Rongwei Yang School of Insurance Central University of Finance and EconomicsBeijing 100081China National Defense Academy Yokosuka 239-8686Japan Department of Mathematics State University of New York at AlbanyAlbanyNY 12222USA

This paper aims to introduce some new ideas into the study of submodules in Hilbert spaces of analytic functions. The effort is laid out in the Hardy space over the bidisk H^2(D^2). A closed subspace M in H^2(D^2) is called a submodule if ziM ? M(i = 1, 2). An associated integral operator(defect operator) CM captures much information about M. Using a Kre??n space indefinite metric on the range of CM, this paper gives a representation of M. Then it studies the group(called Lorentz group) of isometric self-maps of M with respect to the indefinite metric, and in finite rank case shows that the Lorentz group is a complete invariant for congruence relation. Furthermore, the Lorentz group contains an interesting abelian subgroup(called little Lorentz group) which turns out to be a finer invariant for M.

关键词： submodules Krein spaces reproducing kernels defect operators Lorentz group little Lorentz group

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

Pitfalls of restriction enzyme analysis in identifying, characterizing,typing, and naming viral pathogens in the era of whole genome data, as illustrated by HAdV type 55

引用

Virologica Sinica 2016年第5期31卷 448-453页

作者： Qiwei Zhang Shoaleh Dehghan Donald seto Biosafety Level-3 Laboratory School of Public HealthSouthern Medical University(Guangdong Provincial Key Laboratory of Tropical Disease Research) Chemistry Department American University Bioinformatics and Computational Biology Program School of Systems BiologyGeorge Mason University

Restriction endonuclease analysis(REA),or restriction fragment length polymorphism(RFLP),was useful for identifying and determining the relatedness and putative identities of microbial strains(Tang et al.,1997)and for... 详细信息

关键词： and naming viral pathogens in the era of whole genome data DLL QS characterizing,typing Pitfalls of restriction enzyme analysis in identifying REA type

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

Advanced HSLA Steels for Automotive Use

引用

Journal of Iron and Steel Research International 2011年第S1期18卷 49-56页

作者： Sekita Takashi seto Kazhiro Funakawa Yoshimasa Steel Research Laboratories JFE Steel Corporation260-0835ChibaJapan Steel Research Laboratories JFE Steel Corporation210-0855KawasakiJapan

Characteristic HSLA steels for automotive use are introduced in which both of precipitation and microstructure is controlled to obtain suitable mechanical *** outer panels such as fender,the combination of low yield strength,high tensile strength and deep-drawability were realized by controlling the distribution of NbC and precipitation free *** other steel,developed for chassis parts such as lower arm,utilizes extremely fine interphase precipitation to obtain high yield strength and excellent hole *** steels have contributed to the reduction of weight in car body.

关键词： precipitation free zone (PFZ) deep drawability interphase precipitation hole expansionability yield strength

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

Hepatitis B virus reactivation during immunosuppressive therapy: Appropriate risk stratification

引用

World Journal of Hepatology 2015年第6期7卷 825-830页

Our understanding of hepatitis B virus(HBV) reactivation during immunosuppresive therapy has increased remarkably during recent years. HBV reactivation in hepatitis B surface antigen(HBs Ag)-positive individuals has been well-described in certain immunosuppressive regimens, including therapies containing corticosteroids, anthracyclines, rituximab, antibody to tumor necrosisfactor(anti-TNF) and hematopoietic stem cell transplantation(HSCT). HBV reactivation could also occur in HBs Ag-negative, antibody to hepatitis B core antigen(anti-HBc) positive individuals during therapies containing rituximab, anti-TNF or *** HBs Ag-positive patients, prophylactic antiviral therapy is proven to the effective in preventing HBV reactivation. Recent evidence also demonstrated entecavir to be more effective than lamivudine in this aspect. For HBs Ag-negative, antiHBc positive individuals, the risk of reactivations differs with the type of immunosuppression. For rituximab, a prospective study demonstrated the 2-year cumulative risk of reactivation to be 41.5%, but prospective data is still lacking for other immunosupressive regimes. The optimal management in preventing HBV reactivation would involve appropriate risk stratification for different immunosuppressive regimes in both HBs Ag-positive and HBs Ag-negative, anti-HBc positive individuals.

关键词： Hepatitis B virus Antibody to hepatitis Bcore antigen Hepatitis B surface antigen Rituximab Antigen CD20 Hematopoietic stem cell transplantation Antibody to tumor necrosis factor Occult

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

Glucose metabolism in gastric cancer:The cutting-edge

引用

World Journal of Gastroenterology 2016年第6期22卷 2046-2059页

作者： Lian-Wen Yuan Hiroharu Yamashita Yasuyuki seto Department of Geriatric Surgery Second Xiangya HospitalCenter-South UniversityChangsha 410011Hunan ProvinceChina Department of Gastrointestinal Surgery Graduate School of MedicineUniversity of TokyoTokyo 113-8655Japan

Glucose metabolism in gastric cancer cells differs from that of normal epithelial cells. Upregulated aerobic glycolysis(Warburg effect) in gastric cancer meeting the demands of cell proliferation is associated with genetic mutations, epigenetic modification and proteomic alteration. Understanding the mechanisms of aerobic glycolysis may contribute to our knowledge of gastric carcinogenesis. Metabolomic studies offer novel, convenient and practical tools in the search for new biomarkers for early detection, diagnosis, prognosis, and chemosensitivity prediction of gastric cancer. Interfering with the process of glycolysis in cancer cells may provide a new and promising therapeutic strategy for gastric cancer. In this article, we present a brief review of recent studies of glucose metabolism in gastric cancer, with primary focus on the clinical applications of new biomarkers and their potential therapeutic role in gastric cancer.

关键词： Glucose metabolism Warburg effect Metabolomics Gastric cancer Biomarker Therapy

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

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：