检索结果-南通市图书馆

Global epidemiology of mental disorder in atrial fibrillation between 1998-2021:A systematic review and meta-analysis

引用

World Journal of Psychiatry 2024年第1期14卷 179-193页

作者： Shuai Zhang Na Zhang liu liu Wang Zheng Zi-lin Ma Si-Yu Qiao ying-li zhao Yi-Hong Wei Gang Wu Qiu-Ting Yu Bing Deng lin Shen Department of Cardiology LongHua Hospital Shanghai University of Traditional Chinese MedicineShanghai 200032China Department of Dermatology Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghai 200437China

BACKGROUND As the burden of mental disorders among patients with atrial fibrillation(AF)increases,researchers are beginning to pay close attention to the risk and prevalence of these *** studies have independently analyzed the risk of comorbidity with depression and anxiety in patients with AF,no study has systematically focused on the global epidemiology of these two mental *** To explore the prevalence of depression and anxiety in patients with *** Five databases were searched from their date of establishment until January *** studies reporting the comorbidity of AF with depression and anxiety,were included in this *** information,such as the first author/publication year,study year,study type,and prevalence of depression and anxiety,were *** SE 15.1 was used to analyze the ***,meta-regression,and sensitivity analyses were performed to estimate study *** After a thorough search,26 studies were identified and included in this *** prevalence rates of depression and anxiety in adults with AF were 24.3%and 14.5%,*** adult males with AF,the prevalence was 11.7%and 8.7%,respectively,whereas in females it was 19.8%and 10.1%,*** older adults with AF,the prevalence rates of depression and anxiety were 40.3%and 33.6%,*** highest regional prevalence of depression and anxiety was observed in European(30.2%)and North American(19.8%)patients with *** In this study,we found that the prevalence of depression and anxiety among patients with AF varies with sex,region,and evaluation scales,suggesting the need for psychological interventions for patients with AF in clinical practice.

关键词： Atrial fibrillation Depression Anxiety Prevalence

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

蒸汽浴-流动分析仪法测定土壤有机碳含量的方法

引用

中国土壤与肥料 2024年第2期 228-234页

作者：李朝英郑路明安刚王亚南中国林业科学研究院热带林业实验中心广西凭祥532600 广西友谊关森林生态系统国家定位观测研究站崇左凭祥友谊关森林生态系统广西野外科学观测研究站广西凭祥532600

为了准确高效批量测定土壤有机碳含量,采用比色管代替消煮管,蒸汽加热消煮土壤,利用流动分析仪法测定有机碳。并将此方法与重铬酸钾氧化-外加热法(常规通用)进行了比较,探讨方法的可行性。结果表明,蒸汽浴-流动分析仪法测定土壤有机碳... 详细信息

为了准确高效批量测定土壤有机碳含量,采用比色管代替消煮管,蒸汽加热消煮土壤,利用流动分析仪法测定有机碳。并将此方法与重铬酸钾氧化-外加热法(常规通用)进行了比较,探讨方法的可行性。结果表明,蒸汽浴-流动分析仪法测定土壤有机碳含量重复性试验的相对标准偏差为3.19%~9.41%,回收率为92.21%~97.63%。方法精密度及准确性良好。所测结果与重铬酸钾氧化-外加热法无显著性差异(P>0.05),两种方法拟合的回归方程:y(蒸汽浴-流动分析仪法)=0.947x(重铬酸钾氧化-外加热法)+1.621(r^(2)=0.933),两者呈良好的相关性。用两种方法测定200个土壤有机碳,蒸汽浴-流动分析仪法的检测用时是重铬酸钾氧化-外加热法用时的68%,人工操作用时是重铬酸钾氧化-外加热法用时的44%,蒸汽浴-流动分析仪法无需使用硫酸亚铁,重铬酸钾、硫酸和水用量为重铬酸钾氧化-外加热法的40%。蒸汽浴-流动分析仪法省工省时,人员工作强度低,试剂用量少,环境危害降低,检测准确高效,经济安全,可推荐为大批量土壤有机碳含量测定的方法。

关键词：蒸汽浴流动分析仪法土壤有机碳

来源：

维普期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Kinetic Analysis of the Interaction between Nonsteroidal Anti-inflammatory Drugs and Cyclooxygenase-2 Using Wavelength Modulation Surface Plasmon Resonance

引用

Chinese Journal of Chemistry 2011年第1期29卷 165-170页

作者： liu, Xia li, ying lin, zhao College of Food Science and Technology Hunan Agricultural University Hunan Provincial Key Laboratory of Food Science and Biotechnology Changsha Hunan 410128 China

A surface plasmon resonance （SPR） biosensor based on wavelength modulation technology was developed and validated for the kinetic analysis of the interactions between two nonsteroidal anti-inflammatory drugs （NSAIDs） and cyclooxygenase-2 （COX-2）. After the effect of different concentration COX-2 on the binding capacity of the SPR biosensor surface was studied, the COX-2 was immobilized covalently onto the biosensor surface using a standard amine coupling method. The affinity constants for indomethacin, ketoprofen binding to COX-2 are 7.5× 10^3 L/tool and 9.25 × 10^3 L/mol, respectively. The biosensor surface can be regenerated after being rinsed with 0.01 mol/L NaOH, and the biosensor can be used repeatedly. These indicated that the wavelength modulation SPR biosensor has the potential application in the fields of pharmacokinetics, pharmacodynamics and drug discovery.

关键词： surface plasmon resonance biosensor cyclooxygenase drug affinity

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

Fast segmentation approach for SAR image based on simple Markov random field

引用

Journal of Systems Engineering and Electronics 2010年第1期21卷 31-36页

作者： Xiaogang Lei ying li Na zhao Yanning Zhang Department of Computer Science Northwestern Polytechnical University Xi'an 710072 E R. China

Traditional image segmentation methods based on MRF converge slowly and require pre-defined weight. These disadvantages are addressed, and a fast segmentation approach based on simple Markov random field （MRF） for SAR image is proposed. The approach is firstly used to perform coarse segmentation in blocks. Then the image is modeled with simple MRF and adaptive variable weighting forms are applied in homogeneous and heterogeneous regions. As a result, the convergent speed is accelerated while the segmentation results in homogeneous regions and boarders are improved. Simulations with synthetic and real SAR images demonstrate the effectiveness of the proposed approach.

关键词： SAR image segmentation simple Markov random field coarse segmentation maximum a posterior iterated condition mode.

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 chronic obstructive pulmonary disease with mild cognitive impairment and dementia risk:A systematic review and meta-analysis

引用

World Journal of Clinical Cases 2022年第11期10卷 3449-3460页

作者： li-ying zhao Xue-Lai Zhou Department of Geriatrics Traditional Chinese Medical Hospital of ZhujiZhuji 311800Zhejiang ProvinceChina Department of Respiratory Medicine Traditional Chinese Medical Hospital of ZhujiZhuji 311800Zhejiang ProvinceChina

BACKGROUND Chronic obstructive pulmonary disease(COPD)is a common public health issue that has been linked to cognitive *** To investigate the relationship between COPD and a risk of mild cognitive impairment(MCI)and *** A comprehensive literature search of the PubMed,Embase,Google Scholar,and Cochrane library electronic databases was *** odds ratios(OR)and mean differences(MD)with 95%confidence intervals(CIs)were calculated using a random or fixed effects *** that met the inclusion criteria were assessed for quality using the Newcastle Ottawa *** Twenty-seven studies met all the inclusion ***-analysis yielded a strong association between COPD and increased risk of MCI incidence(OR=2.11,95%CI:1.32-3.38).It also revealed a borderline trend for an increased dementia risk in COPD patients(OR=1.16,95%CI:0.98-1.37).Pooled hazard ratios(HR)using adjusted confounders also showed a higher incidence of MCI(HR=1.22,95%CI:-1.18 to-1.27)and dementia(HR=1.32,95%CI:-1.22 to-1.43)in COPD patients.A significant lower mini-mental state examination score in COPD patients was noted(MD=-1.68,95%CI:-2.66 to-0.71).CONCLUSION Our findings revealed an elevated risk for the occurrence of MCI and dementia in COPD *** clinical management and attention are required to prevent and control MCI and dementia incidence in COPD patients.

关键词： Mild cognitive impairment Chronic obstructive pulmonary disease Dementia Meta-analysis

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

Host susceptibility to persistent hepatitis B virus infection

引用

World Journal of Gastroenterology 2006年第30期12卷 4788-4793页

作者： ying-li He ying-Ren zhao Shu-lin Zhang Shu-Mei lin Department of Infectious Diseases the First Hospital of Xi'an Jiaotong University Xi'an 710061 Shaanxi Province China

Genetic epidemiology researches such as twin studies, family-clustering of hepatitis B virus （HBV） infection studies and ethnic difference studies have provided the evidence that host genetic factors play an important role in determining the outcome of HBV infection. The opening questions include which human genes are important in infection and how to find them. Though a number of studies have sought genetic associations between HBV infection/persistence and gene polymorphisms, the candidate gene-based approach is clearly inadequate to fully explain the genetic basis of the disease. With the advent of new genetic markers and automated genotyping, genetic mapping can be conducted extremely rapid. This approach has been successful in some infectious diseases. linkage analysis can find host genes susceptible to HBV and is of great clinical importance.

关键词： Hepatitis B virus Susceptibility Association study linkage study

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

Radix Astragali-induced differentiation of rat bone marrow-derived mesenchymal stem cells

引用

Neural Regeneration Research 2009年第7期4卷 497-502页

作者： Xinsheng Wang Haifeng li ying zhao Xiaoli Zhang Aihua Bo Central Laboratory of Hebei North University Zhangjiakou 075029 Hebei Province China

BACKGROUND： Chemical induction has been shown to be effective at promoting the differentiation of bone marrow-derived mesenchymal stem cells （MSCs）. However, these inductors have cytotoxicity side effects that may damage cells over time. Traditional Chinese medicines avoid this disadvantage while still producing effective induction. OBJECTIVE： To investigate the influence of RadixAstragafi （Huangql） on the differentiation of MSCs. DESIGN, TIME AND SETTING： In vitro study of traditional Chinese medicine in neural stem cell differentiation. The experiment was performed at the Central Laboratory of Hebei North University between April and June 2007. MATERIALS： Radix Astragafi solution （lot No. 060105; license No. Z53021585） was purchased from Dali Pharmaceutical Co., Ltd., China; rabbit anti-rat nestin, rabbit anti-rat neuron-specific enolase （NSE）, mouse anti-rat microtubule-associated protein 2, and rabbit anti-rat glial fibrillary acidic protein were purchased from Wuhan Boster, China. METHODS： Whole bone marrow was isolated from the femur and tibia of 6-week-old male Wistar rats and subcultured. The fourth passage of MSCs were harvested and induced by different concentrations （50, 100, 200, 400 g/L） of Radix Astragali. MAIN OUTCOME MEASURES： Hematoxylin-eosin staining was used to observe MSC morphology after 24 hours of induction. Immunocytochemistry was employed to observe the expression of NSE （specific neuronal marker）, nestin （marker of neural stem cell）, glial fibrillary acidic protein and microtubule-associated protein 2 （markers of astrocytes）. RESULTS： Following Radix Astragali treatment, changes occurred in cell morphology including： cell body pyknosis; thin and long processes formed in some cells, with growth corresponding to drug concentration and induction time; and the formation of network-like connections between some cells. With increasing drug concentration and induction time, nestin expression was upregulated, and the number of positive

关键词： Radix Astragafi mesenchymal stem cells inductive differentiation

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

MECHANICAL PROPERTIES AND CURING KINETICS OF EPOXY RESINS CURED BY VARIOUS AMINO-TERMINATED POLYETHERS

引用

Chinese Journal of Polymer Science 2010年第6期28卷 961-969页

作者： li-ying zhao Jian-guo Guan Hui-ru Ma Zhi-gang Sun State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

A high performance thermosetting epoxy resin crosslinkable at room temperature was obtained via directly moulding diglycidyl ether of bisphenol A（DGEBA） and flexibleα,ω-bisamino（n-alkylene）phenyl terminated poly（ethylene glycol）.The influences of the n-alkylene inserted in aminophenyl of flexible amino-terminated polythers（ATPE） on the mechanical properties,fractographs and curing kinetics of the ATPE-DGEBA cured products were *** results show that the insertion of n-alkylene group into the aminophenyl group of the ATPE,on one hand,can significantly increase the strain relaxation rate and decrease glass transition temperature of the ATPE-DGEBA cured products,resulting in slight decrease of the Young’s modulus and tensile strength,and significant increase of the toughness and elongation of the ATPE-DGEBA cured *** the other hand,it can remarkably enhance the reactivity of amine with epoxy,much accelerating the curing rate of the ATPE-DGEBA *** activation energy of DGEBA cured by BAPTPE,BAMPTPE and BAEPTPE was 53.1,28.5 and 25.4 kJ·mol;,*** as-obtained ATPE-DGEBA cured products are homogeneous, transparent,and show excellent mechanical properties including tensile strength and *** they are promising to have important applications in structure adhesives,casting bulk materials,functional coatings,cryogenic engineering, damping and sound absorbing materials.

关键词： Epoxy resin Amine-terminated polyether Fractography Curing kinetics Mechanical properties

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

APPliCATION OF LYAPUNOV EXPONENT SPECTRUM IN PRESSURE FLUCTUATION OF DRAFT TUBE

引用

Journal of Hydrodynamics 2009年第6期21卷 856-860页

作者： WANG li-ying zhao Wei-guo WEI De-hua College of Water Conservancy and Hydroelectric Power Hebei University of Engineering Handan 056021 China

The Lyapunov exponent spectrum is firstly applied in the analysis of pressure fluctuation of draft tube and calculated based on the time series of vibration in experiments for different situations. Results shows that the Lyapunov exponent spectrum varies with the setting of guide vane, So the Lyapunov exponent spectrum can be used to judge the pressure fluctuation of draft tube so as to timely adjust the setting of the guide vanes to reduce the damage caused by the vibration.

关键词： Lyapunov exponent spectrum pressure fluctuation setting of guide vanes

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

Kinetics of austenite grain growth in medium-carbon niobium-bearing steel

引用

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2011年第3期12卷 171-176页

作者： ying-li zhao Jie SHI Wen-quan CAO Mao-qiu WANG Gang XIE School of Material and Metallurgy Engineering Kunming University of Science and Technology Kunming 650093 China Institute for Structural Materials Central Iron and Steel Research Institute Beijing 100081 China

In order to locate a reasonable heating system,the austenite grain growth behavior of Nb microalloyed medium carbon steel has been experimentally studied at various austenitizing temperatures and for different holding *** is indicated that austenite grain growth increases with increasing austenitizing temperatures and holding *** when the austenitizing temperature was above 1100 ℃,austenite grains grew rapidly,and an abnormal austenite grain growth was *** the austenitizing temperature was lower than 1100 ℃,austenite grain size and growth rate were *** activation energy of grain growth in the tested steel is 397 679.5 J/*** ensure an absence of coarse grains in microstructures,the heating technology of the tested steel should be controlled for 1 h at 1100 ℃.The relationships of austenite average grain size with soaking temperature and time of tested steel were obtained by mathematical calculation,and austenite average grain size was found to be in agreement with the measured size for different holding times.

关键词： Microalloyed steel Grain growth Modeling

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：