检索结果-南通市图书馆

Variations and trends of trans-boundary runoff in the longitudinal range-gorge region

Journal of Mountain Science 2017年第2期14卷 316-324页

作者： YU Yan-ling PAN Feng LIU xin-you CHEN Wen-hua HE Da-ming Water Conservancy College Yunnan Agricultural UniversityKunming 650201China Key Laboratory of International River and Transboundary Eco-security Yunnan UniversityKunming 650091China Electric power engineering college Kunming University of Science and TechnologyKunming 650093China State Key Laboratory of hydrology water resources and hydraulic engineering Hohai UniversityNanjing 210098China Hydrology and water resources Bureau Yunnan ProvinceKunming 650106China Baoshan College Baoshan 678000China

The mountainous hydrological process usually shows high variation to climate change and human action. In the Longitudinal Range-Gorge Region（LRGR）, Southwestern China and Southeast Asian, the transboundary runoff variations are much more sensitive and complex under the interaction of climate change, ＂corridor-barrier＂ functions in LRGR,and dams building. In this paper, based on the long hydrological records（1956-2013） from three mainstream hydrological stations in Nu River,Lancang River, and Red River, the region runoff variations were analyzed. The results show out： i） the regional runoff changes were strongly influenced by the ＂Corridor-Barrier＂ functions in LRGR from west to east, the variability extent of annual runoff increased, but tended to decrease after 2009 and the reduced extents also increased; ii） the annual runoff change in the three rivers had high concentration degrees; iii） there were periodicities of 33 years of runoff change in Nu River and Lancang River, and 30 years in Red River, and the lower flow period would continue for 8-9 years in Nu River and Lancang River but only for 4 years in Red River; iv） since 2010, as the two mega dams of Xiaowan and Nuozhadu built in Lancang River mainstream, their variations of annual runoff were quite different. The research results could offer a scientific base for sustainable utilization,conservation, and management of the regional water resources

关键词： Runoff variations Climate change "Corridor-barrier" functions Longitudinal rangegorge region Transboundary rivers

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

酚醛树脂基二级多孔泡沫碳的制备及其力学性能

引用

兰州理工大学学报 2024年第4期50卷 17-22页

作者：贾建刚祁旺谦端智王明尤欣雅刘第强臧树俊兰州理工大学材料科学与工程学院甘肃兰州730050 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室甘肃兰州730050

以酚醛树脂为碳源前驱体,以NaCl粉末和自制盐球为造孔剂,用模板法制备高强度多级孔泡沫碳.通过盐球粒径和NaCl粉末对泡沫碳孔结构进行调控,研究造孔剂盐球粒径对泡沫碳孔结构和力学性能的影响.结果表明:当盐球体积分数相同时(盐球占泡... 详细信息

以酚醛树脂为碳源前驱体,以NaCl粉末和自制盐球为造孔剂,用模板法制备高强度多级孔泡沫碳.通过盐球粒径和NaCl粉末对泡沫碳孔结构进行调控,研究造孔剂盐球粒径对泡沫碳孔结构和力学性能的影响.结果表明:当盐球体积分数相同时(盐球占泡沫碳胚体体积的60%),随着盐球粒径增大,多级孔泡沫碳中盐球孔的均匀性降低,其韧带随着盐球粒径增大逐渐变粗;且盐球孔内部及韧带上存在大量NaCl粉末孔和气泡孔,孔与孔之间相互连通,形成了开孔结构.引入不同粒径的盐球后,多级孔泡沫碳的密度变化不明显,约为0.2 g/cm^(3),但压缩强度随盐球粒径增大逐渐降低.其中加入盐球粒径为14~35目的泡沫碳,压缩强度和比压缩强度最大分别为4.4 MPa和22 MPa·cm^(3)/g.

关键词：泡沫碳模板法盐球力学性能

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

Cavity optomechanical chaos

引用

Fundamental Research 2023年第1期3卷 63-74页

作者： Gui-Lei Zhu Chang-Sheng Hu Ying Wu xin-you Lü School of Physics Huazhong University of Science and TechnologyWuhan 430074China

Cavity optomechanics provides a powerful platform for observing many interesting classical and quantum nonlinear phenomena due to the radiation-pressure coupling between its optical and mechanical *** particular,the chaos induced by optomechanical nonlinearity has been of great concern because of its importance both in fundamental physics and potential applications ranging from secret information processing to optical *** review focuses on the chaotic dynamics in optomechanical *** basic theory of general nonlinear dynamics and the fundamental properties of chaos are *** nonlinear dynamical effects in optomechanical systems are ***,recent remarkable theoretical and experimental efforts in manipulating optomechanical chaotic motions are *** perspectives of chaos in hybrid systems are also discussed.

关键词： Cavity optomechanics Chaos Nonlinear dynamics Bistability Period-doubling bifurcation

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

HIV阳性男男性行为者心理健康素养的潜在类别分析

引用

现代预防医学 2024年第16期51卷 3029-3034+3067页

作者：游心怡文琪王文慧徐兴莲杨雯雯吴雨函宋艳南京中医药大学护理学院南京中医药大学附属南京医院(南京市第二医院)护理部

目的探索HIV阳性男男性行为(men who have sex with men, MSM)心理健康素养的潜在类别及其影响因素。方法于2023年11月至2024年1月，便利选取南京市某三级甲等医院226名HIV阳性MSM,采用一般资料调查问卷和多元心理健康素养量表进行调... 详细信息

目的探索HIV阳性男男性行为(men who have sex with men, MSM)心理健康素养的潜在类别及其影响因素。方法于2023年11月至2024年1月，便利选取南京市某三级甲等医院226名HIV阳性MSM,采用一般资料调查问卷和多元心理健康素养量表进行调查。运用潜在类别分析和多元logistic回归分析探究该群体心理健康素养的分类特征与影响因素。结果 HIV阳性MSM心理健康素养特征可分为低素养组(22.1%)、资源匮乏组(38.1%)、高素养组(39.8%)3类。多元logistic回归分析显示，与低素养组相比，年龄18～34岁(OR=5.573,95%CI=1.020～30.449)的患者更易进入资源匮乏组；参加过心理健康技能学习(OR=0.126,95%CI=0.033～0.476)的患者更易进入高素养组。与高素养组相比，文化程度为初中及以下(OR=15.992,95%CI=2.036～125.591)、高中或专科(OR=2.805,95%CI=1.098～7.166)、HIV感染确诊时长<1年(OR=8.440,95%CI=1.628～43.742),有并发症(OR=6.619,95%CI=1.077～40.663)的患者更容易进入低素养组；家庭人均月收入<3 000元(OR=6.241,95%CI=1.088～35.814)的患者更易进入资源匮乏组。结论 HIV阳性MSM心理健康素养存在3个潜在类别，未来应根据该群体不同类别特征和影响因素制定针对性干预策略，以提高其心理健康素养水平，进一步改善其心理健康。

关键词：艾滋病病毒男男性行为心理健康素养潜在类别分析影响因素

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Hepatocellular carcinoma with obstructive jaundice: diagnosis, treatment and prognosis

引用

World Journal of Gastroenterology 2003年第3期9卷 385-391页

作者： Lun-xin Qin Zhao-you Tang Liver Cancer Institute and Zhongshan Hospital, Fudan University, Shanghai, China Liver Cancer Institute Fudan University 136 Yi Xue Yuan Road Shanghai 200032 China. zytang@***

Obstructive jaundice as the main clinical feature is uncommon in patients with hepatocellular carcinoma (HCC). Only 1-12 %of HCC patients manifest obstructive jaundice as the initial complaint. Such cases are clinically classified as 'icteric type hepatoma', or 'cholestatic type of HCC'. Identification of this group of patients is important, because surgical treatment may be beneficial. HCC may involve the biliary tract in several different ways: tumor thrombosis, hemobilia,tumor compression, and diffuse tumor infiltration. Bile duct thrombosis (BDT) is one of the main causes for obstructive jaundice, and the previously reported incidence is 1.2-9 %.BDT might be benign, malignant, or a combination of *** thrombi could be blood clots, pus, or *** thrombi could be primary intrabiliary malignant tumors, HCC with invasion to bile ducts, or metastatic cancer with bile duct invasion. The common clinical features of this type of HCC include: high level of serum AFP; history of cholangitis with dilation of intrahepatic bile duct; aggravating jaundice and rapidly developing into liver dysfunction. It is usually difficult to make diagnosis before operation, because of the low incidence rate, ignorant of this disease, and the difficulty for the imaging diagnosis to find the BDT preoperatively. Despite recent remarkable improvements in the imaging tools for diagnosis of HCC, such cases are still incorrectly diagnosed as cholangiocarcinoma or choledocholithiases. Ultrasonography (US) and CT are helpful in showing hepatic tumors and dilated intrahepatic and/or extrahepatic ducts containing dense material corresponding to tumor debris. Direct cholangiography including percutaneous transhepatic cholangiography (PTC) and endoscopic retrograde cholangiopancreatography (ERCP)remains the standard procedure to delineate the presence and level of biliary obstruction. Magnetic resonance cholangiopancreatography (MRCP) is superior to ERCP in interpreting the cause and

关键词：肝细胞癌梗阻性黄疸合并症肝动脉灌注栓塞化疗诊断临床特点

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

Modified Approach for Establishing Filament-induced Permanent Middle Cerebral Artery Occlusion Rats and Mice Models

引用

Chinese Medical Sciences Journal 2011年第4期26卷 257-258页

作者： you-xin Ji Ke-tao Lan Chuan-xin Geng Xiao Zou Song-ping Wang Department of Medical Oncology Qingdao Central Hospital Second Affiliated Hospital of Qingdao University Qingdao 266042 China

BRAIN ischemia stroke is a devastating disease,with more than 10％ stroke patients either severely disabled or *** rodent filament middle cerebral artery occlusion (MCAO)model can mimic human brain ischemic stroke well,its wide use was restricted by difficulty in surgery,especially in ligating pterygopalatineartery (PPA).Twenty-seven male Sprague-Dawley rats were randomly divided into A,B,C groups (n=9).All the rats were performed MCAO surgery with sutures of difference *** A used 4-0 blocking suture plus ipsilateral PPA block,group B used 3-0 blocking suture plus ipsilateral common carotid artery (CCA) block,and group C used 3-0 suture plus ipsilateral PPA ***-seven male C57BL/6 wild type mice were also randomly divided into a,b,c *** a used 5-0blocking suture plus ipsilateral PPA block,group b used 6-0blocking suture plus ipsilateral CCA block,group c use 6-0suture plus ipsilateral PPA block.

关键词： SD大鼠小鼠模型动脉闭塞大脑永久性立方纤维

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

Association between the SUMO4 M55V Polymorphism and Susceptibility to Type 2 Diabetes Mellitus:A Meta-analysis

引用

Biomedical and Environmental Sciences 2017年第4期30卷 288-295页

作者： ZHANG Qun LIU Di ZHAO Zhong Yao SUN Qi DING Li Xiang WANG you xin Chinese Center for Disease Control and Prevention Beijing 102206China Beijing Key Laboratory of Clinical Epidemiology School of Public HealthCapital Medical UniversityBeijing 100069China Department of Orthopedics Surgery Beijing Shijitan HospitalCapital Medical UniversityBeijing 100038China

Objective The aim of this study is to determine whether the SUMO4 M55V polymorphism is associated with susceptibility to type 2 diabetes mellitus （T2DM）. Methods A meta-analysis was performed to detect the potential association of the SUMO4 M55V polymorphism and susceptibility to T2DM under dominant, recessive, co-dominant （homogeneous and heterogeneous）, and additive models. Results A total of eight articles including 10 case-control studies, with a total of 2932 cases and 2679 controls, were included in this meta-analysis. The significant association between the SUMO4 M55V polymorphism and susceptibility to T2DM was observed in the dominant model （GG ＋ GA versus AA： OR = 1.21, 95% CI = 1.05-1.40, P = 0.009）, recessive model （GG versus GA ＋ AA： OR = 1.29, 95% CI = 1.07-1.356, P = 0.010）, homozygous model （GG versus AA： OR = 1.41, 95% CI = 1.06-1.56, P = 0.001）, and additive model （G versus A： OR = 1.18, 95% CI = 1.08-1.29, P = 0.001）, and marginally significant in the heterozygous model （GA versus AA： OR = 1.16, 95% CI = 0.98-1.36, P = 0.080）. In subgroup analyses, significant associations were observed in the Chinese population under four genetic models excluding the heterozygous model, whereas no statistically significant associations were observed in the Japanese population under each of the five genetic models. Conclusion The meta-analysis demonstrated that the G allele of the SUMO4 M55V polymorphism could be a susceptible risk locus to T2DM, mainly in the Chinese population, while the association in other ethnic population needs to be further validated in studies with relatively large samples.

关键词： SUMO4 Type 2 diabetes mellitus (T2DM) Polymorphisms Meta-analysis

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

Controllable Optical Bistability in a Crystal of Molecular Magnets System

引用

Communications in Theoretical Physics 2008年第10期50卷 1003-1008页

作者： LIU Ji-Bing LU xin-you HAO Xiang-Ying SI Liu-Gang YANG Xiao-Xue Department of Physics Hubei Normal University Huangshi 435002 China Department of Physics Huazhong University of Science and Technology Wuhan 430074 China

We investigate the formation of optical bistability （OB） in a crystal of molecular magnets contained in a unidirectional ring cavity. The crystal is subjected to one dc magnetic field and two （probe and coupling） ac resonant magnetic field. The results show that OB can be controlled efficiently by adjusting the intensity of the control field, the detuning of probe magnetic field and the cooperation parameter, Furthermore, within certain parameter range, the optical multistablity （OM） can also be observed in the crystal medimn. This＇ investigation can be used for designing new types of nonelectronic devices for realizing switching process.

关键词： optical bistability molecular magnets cooperation parameter

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

Association of C-reactive Protein with Cardiovascular Outcomes: A Mendelian Randomization Study in the Japanese Population

引用

Biomedical and Environmental Sciences 2022年第2期35卷 126-132页

作者： CAO Ming Yang LIU Di ZHANG Xiao Yu TIAN Qiu Yue ZHANG Qun WANG you xin Beijing Key Laboratory of Clinical Epidemiology School of Public HealthCapital Medical UniversityBeijing 100069China Centre for Biomedical Information Technology Shenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen 518055GuangdongChina Department of Anesthesiology Sanbo Brain HospitalCapital Medical UniversityBeijing 100093China Chinese Center for Disease Control and Prevention Beijing 102206China Centre for Precision Medicine School of Medical and Health SciencesEdith Cowan UniversityPerth 60127Australia

Objective Traditional epidemiological studies have shown that C-reactive protein(CRP)is associated with the risk of cardiovascular diseases(CVDs).However,whether this association is causal remains ***,Mendelian randomization(MR)was used to explore the causal relationship of CRP with cardiovascular outcomes including ischemic stroke,atrial fibrillation,arrhythmia and congestive heart *** We performed two-sample MR by using summary-level data obtained from Japanese Encyclopedia of Genetic association by Riken(JENGER),and we selected four single-nucleotide polymorphisms associated with CRP level as instrumental *** estimates were calculated with the inverse-variance weighted(IVW),penalized weighted median and weighted ***-Egger regression was used to explore *** No significant causal association of genetically determined CRP level with ischemic stroke,atrial fibrillation or arrhythmia was found with all four MR methods(all Ps>0.05).The IVW method indicated suggestive evidence of a causal association between CRP and congestive heart failure(OR:1.337,95%CI:1.005–1.780,P=0.046),whereas the other three methods did *** clear pleiotropy or heterogeneity were *** Suggestive evidence was found only in analysis of congestive heart failure;therefore,further studies are ***,no causal association was found between CRP and the other three cardiovascular outcomes.

关键词： Mendelian randomization C-reactive protein Cardiovascular diseases East Asians Causal inference

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

MiR-181a-5p promotes anoikis by suppressing autophagy during detachment induction in the mammary epithelial cell line MCF10A

引用

Protein & Cell 2016年第4期7卷 305-309页

作者： Jia-li Wei Yuan-cheng Li Zhong-liang Ma you-xin Jin School of Life Sciences Shanghai University Shanghai 200444China Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO) Chinese Academy of Sciences Suzhou 215123 China

Dear Editor, MicroRNAs （miRNAs） are small non-coding RNAs of -22 nucleotides （nt） in length that bind to the 3＇UTRs of their target mRNAs, leading to translational inhibition or mRNA degradation （Bartel, 2009）. miRNAs regulate the expression of hundreds of genes involved in various biological processes, such as apoptosis, migration, metastasis, and autophagy （Flynt and Lai, 2008; Frankel and Lund, 2012; Ventura and Jacks, 2009）. Previous studies have indicated that miRNAs may act as oncogenes or antioncogenes in tumorigenesis of various cancers （Hammond, 2015）.

关键词： MCF7 Cell MCF10A Cell Promote Cell Survival Breast Cancer Cell Line MCF7 TNBC Cell

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：