检索结果-南通市图书馆

Non-invasive assessment of liver fibrosis using twodimensional shear wave elastography in patients with autoimmune liver diseases

引用

World Journal of Gastroenterology 2017年第26期23卷 4839-4846页

作者： Jie zeng Ze-ping Huang jian Zheng Tao Wu Rong-Qin Zheng Department of Medical Ultrasonics Third Affiliated Hospital of Sun Yat-Sen University Guangdong Key Laboratory of Liver Disease Research Sun Yat-Sen University Department of Medical Ultrasonics Third Hospital of Longgang

AIM To determine the diagnostic accuracy of two-dimensional shear wave elastography(2D-SWE) for the noninvasive assessment of liver fibrosis in patients with autoimmune liver diseases(AILD) using liver biopsy as the reference *** Patients with AILD who underwent liver biopsy and 2D-SWE were consecutively enrolled. Receiver operating characteristic(ROC) curves were constructed to assess the overall accuracy and to identify optimal cut-off *** The characteristics of the diagnostic performance were determined for 114 patients with AILD. The areas under the ROC curves for significant fibrosis, severe fibrosis, and cirrhosis were 0.85, 0.85, and 0.86, respectively, and the optimal cut-off values associated with significant fibrosis(≥ F2), severe fibrosis(≥ F3), and cirrhosis(F4) were 9.7 k Pa, 13.2 k Pa and 16.3 k Pa, respectively. 2D-SWE showed sensitivity values of 81.7% for significant fibrosis, 83.0% for severe fibrosis,and 87.0% for cirrhosis, and the respective specificity values were 81.3%, 74.6%, and 80.2%. The overall concordance rate of the liver stiffness measurements obtained using 2D-SWE vs fibrosis stages was 53.5%.CONCLUSION2D-SWE showed promising diagnostic performance for assessing liver fibrosis stages and exhibited high cut-off values in patients with AILD. Low overall concordance rate was observed in the liver stiffness measurements obtained using 2D-SWE vs fibrosis stages.

关键词： Autoimmune liver disease Liver fibrosis Two-dimensional shear wave elastography Ultrasound Liver stiffness

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

Aggregation-regulated bioreduction process of graphene oxide by Shewanella bacteria

引用

Chinese Journal of Chemical Engineering 2024年第5期69卷 56-62页

作者： Kaixin Han Yibo zeng Yinghua Lu ping zeng Liang Shen Department of Chemical and Biochemical Engineering College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Pen-Tung Sah Institute of Micro-Nano Science and Technology Xiamen UniversityXiamen 361005China Chinese Research Academy of Environmental Sciences Beijing 100012China

The bioreduction of graphene oxide(GO)using environmentally functional bacteria such as Shewanella represents a green approach to produce reduced graphene oxide(rGO).This process differs from the chemical reduction that involves instantaneous molecular *** bioreduction,the contact of bacterial cells and GO is considered the rate-limiting *** reveal how the bacteria-GO integration regulates rGO production,the comparative experiments of GO and three Shewanella strains were carried ***-transform infrared spectroscopy,X-ray photoelectron spectroscopy,Raman spectroscopy,and atomic force microscopy were used to characterize the reduction degree and the aggregation *** results showed that a spontaneous aggregation of GO and Shewanella into the condensed entity occurred within 36 h.A positive linear correlation was established,linking three indexes of the aggregation potential,the bacterial reduction ability,and the reduction degree(ID/IG)comprehensively.

关键词： Graphene oxide Reduced graphene oxide Bioreduction Aggregation Shewanella

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

How far does China still need to go to internationalize her academic journals?

引用

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2012年第8期13卷 641-646页

作者： jian-ping LU School of International Studies Zhejiang UniversityHangzhou 310058China Publication Quality Supervsion and Inspection of General Admini-stration of Press and Publication(GAPP) Beijing 100073China

1 Purpose of the report When it comes to the volume of Englishlanguage articles published in international joumals, Chinese scientists are second only to those in the United States （Editorial, 2010）, but this is not... 详细信息

关键词： CLC number G237.5

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

Polyethersulfone-polyvinylpyrrolidone composite membranes: Effects of polyvinylpyrrolidone content and polydopamine coating on membrane morphology, structure and performances

引用

Chinese Journal of Chemical Engineering 2021年第10期34卷 84-97页

作者： Yanna Wu jianxian zeng Yajie zeng Hu Zhou Guoqing Liu jian jian Jie Ding School of Chemistry and Chemical Engineering Hunan University of Science and TechnologyHunan Provincial Engineering Research Center for Functional MembranesXiangtan 411201China School of Chemistry and Chemical Engineering Hunan Normal UniversityChangsha 410081China

Hydrophilic modification is a promising method to inhibit fouling formation on ultrafiltration *** this work,different mass concentrations(1%–16%)of hydrophilic polyvinylpyrrolidone were incorporated into polyethersulfone(PES)membranes fabricated by none-solvent induced phase ***,polydopamine(PDA)coating on the surface of prepared membrane was carried out at pH *** morphology and structure,surface hydrophilicity,permeation flux,BSA rejection,antifouling and stability performances of PES and PDA/PES modified membranes were investigated in *** results indicated that PDA was successfully attached onto the *** hydrophilicity was evaluated by water contact angle *** contact angles of modified membranes reduced remarkably,suggesting that the membrane hydrophilicities were significantly *** results of filtration tests,which were done by dead-end filtration of bovine serum albumin solution,showed that the properties of permeability and fouling resistance were obviously improved by PDA *** polyvinylpyrrolidone mass content reached 10%,flux recovery ratio of modified membrane was up to91.23%,and its BSA rejection were over 70%.The results of stability tests showed that the modified membranes had good mechanical stability and chemical *** facile fabrication procedure and outstanding performances suggested that the modified membranes had a potential in treating fouling.

关键词： Polyethersulfone membrane Polydopamine coating Hydrophilicity Permeability Antifouling

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

CONVERGENCE RATE OF A GENERALIZED ADDITIVE SCHWARZ ALGORITHM

引用

Journal of Computational Mathematics 2006年第5期24卷 635-646页

作者： Jin-ping zeng Gao-jie Chen College of Mathematics and Econometrics Hunan University Changsha 410082 China

The convergence rate of a generalized additive Schwarz algorithm for solving boundary value problems of elliptic partial differential equations is studied. A quantitative analysis of the convergence rate is given for the model Dirichlet problem. It will be shown that a greater acceleration of the algorithm can be obtained by choosing the parameter suitably. Some numerical tests are also presented in this paper.

关键词： Schwarz additive algorithm Convergence rate Dirichlet problem.

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

Theory of Critical Phenomena with Memory

引用

Chinese Physics Letters 2022年第12期39卷 1-7页

作者： Shaolong zeng Sue ping Szeto Fan Zhong State Key Laboratory of Optoelectronic Materials and Technologies School of PhysicsSun Yat-Sen UniversityGuangzhou 510275China

Memory is a ubiquitous characteristic of complex systems,and critical phenomena are one of the most intriguing phenomena in ***,we propose an Ising model with memory,develop a corresponding theory of critical phenomena with memory for complex systems,and discover a series of surprising novel *** show that a naive theory of a usual Hamiltonian with a direct inclusion of a power-law decaying long-range temporal interaction violates radically a hyperscaling law for all spatial dimensions even at and below the upper critical *** entails both indispensable consideration of the Hamiltonian for dynamics,rather than the usual practice of just focusing on the corresponding dynamic Lagrangian alone,and transformations that result in a correct theory in which space and time are inextricably interwoven,leading to an effective spatial dimension that repairs the hyperscaling *** theory gives rise to a set of novel mean-field critical exponents,which are different from the usual Landau ones,as well as new universality *** exponents are verified by numerical simulations of the Ising model with memory in two and three spatial dimensions.

关键词： critical Hamiltonian scaling

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

Advances in the construction of diverse SuFEx linkers

引用

National Science Review 2023年第6期10卷 226-244页

作者： Daming zeng Wei-ping Deng Xuefeng jiang Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism School of Pharmacy East China University of Science and Technology Shanghai Key Laboratory of Green Chemistry and Chemical Process School of Chemistry and Molecular Engineering East China Normal University

Sulfur fluoride exchange(SuFEx),a new generation of click chemistry,was first presented by Sharpless,Dong and co-workers in *** to the high stability and yet efficient reactivity of the SⅥ-F bond,SuFEx has found widespread applications in organic synthesis,materials science,chemical biology and drug discovery.A diverse collection of SuFEx linkers has emerged,involving gaseous SO2F2and SOF4hubs;SOF4-derived iminosulfur oxydifluorides;O-,N-and C-attached sulfonyl fluorides and sulfonimidoyl fluorides;and novel sulfondiimidoyl *** review summarizes the progress of these SuFEx connectors,with an emphasis on analysing the advantages and disadvantages of synthetic strategies of these connectors based on the SuFEx concept,and it is expected to be beneficial to researchers to rapidly and correctly understand this field,thus inspiring further development in SuFEx chemistry.

关键词： SuFEx SuFEx linker SVI–F bond synthetic strategy

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

Stationary Treatment Compared with Individualized Chinese Medicine for Type 2 Diabetes Patients with Microvascular Complications:Study Protocol for a Randomized Controlled Trial

引用

Chinese Journal of Integrative Medicine 2018年第10期24卷 728-733页

作者： HUO jian LIU Li-sha jian Wen-yuan zeng Jie-ping DUAN Jun-guo LU Xue-jing YIN Shuo College of Ophthalmology Chengdu University of Traditional Chinese Medicine Good Clinical Practice Center the Affiliated Hospital of Chengdu University of Traditional Chinese Medicine

Background： Microvascular complications in type 2 diabetes （T2DM）, including diabatic retinopathy （DR）, diabetic kidney disease （DKD）, diabetic peripheral neuropathy （DPN） are the leading causes of visual loss, end-stage renal disease or amputation, while the current therapies are still unsatisfactory. Chinese medicine （CM） has been widely used for treating diabetic mettitus. However, most of the previous studies focused on the single complication. The role of CM treatment in T2DM patients with 2 or multiple microvascular complications is not clear. Objective： To appraise the curative effect of CM in T2DM patients with 2 or multiple microvascular complications, and to compare the effects of stationary treatment and individualized treatment in T2DM patients with microvascular complications. Methods： This trial will be an 8-center, randomized, controlled study with 8 parallel groups. A total of 432 patients will be randomized to 8 groups： DR study group （32 cases） and a corresponding control group （32 cases）, DR＋DKD study group （64 cases） and a corresponding control group （64 cases）, DR＋DPN study group （64 cases） and a corresponding control group （64 cases）, DR＋DKD＋DPN study group （56 cases） and a corresponding control group （56 cases）. The control group will receive stationary treatment, and the study group will receive individualized treatment based on CM syndrome differentiation in addition to stationary treatment. The study duration will be 50 weeks, comprising a 2-week run-in period, 24 weeks of intervention, and 24 weeks of follow-up. The outcomes will assess efficacy of treatment, improvement in CM symptoms, safety assessments, adherence to the treatment, and adverse events. Conclusion： This study will provide evidence of evidence-based medicine for CM treatment in two or multiple microvascular complications caused by T2DM. （Registration No. ChiCTR-IPR-15007072）

关键词： Chinese medicine diabetic microvascular complications randomized controlled trial Qiming Granule

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

Coatings of needle/stripe-like fluoridated hydroxyapatite on H2O2-treated carbon/carbon composites prepared by induction heating and hydrothermal methods

引用

Frontiers of Materials Science 2012年第2期6卷 160-167页

作者： Xin-Bo XIONG jian-Feng HUANG Xie-Rong zeng ping LIANG I Ji-Zhao ZOU Shenzhen Key Laboratory of Special Functional Materials Department of Materials Science and EngineeringShenzhen UniversityShenzhen 518060China Key Laboratory of Auxiliary Chemical&Technology for Chemical Industry(Ministry of Education) Shaanxi University of Science and TechnologyXi'an 710021China

A hydroxyapatite （HA） coating was achieved on H2O2-treated carbon/ carbon （C/C） composite through hydrothermally treating and induction heating deposited CaHPO4 coating in an ammonia solution under ultrasonic water bath. Then, this HA coating was placed in a NH4F solution and hydrothermally treated again to fabricate fluorinated hydroxyapatite （FHA） coatings for 24 h at 353, 373, 393 and 413 K, respectively. The structure, morphology and chemical composition of the HA and FHA coatings were characterized by SEM, XRD, EDS and FTIR, and the adhesiveness and chemical stability of these FHA coatings were examined by a scratch test and an immersion test, respectively. The results showed that the as-prepared FHA coatings contained needle-like or stripe-like crystals, different from those of the HA coating. As the fluoridation temperature rose, the adhesiveness of the FHA coating first increased from 34.8 to 40.9 N at a temperature between 353 and 393 K, and then decreased to 24.2 N at 413 K, while the dissolution rate of the FHA coating decreased steadily. The reasons for the property variation of the FHA coatings were proposed by analyzing the morphology, composition and structure of the coatings.

关键词： carbon hydroxyapatite (HA) coating scratch test dissolution behavior

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

ON GREEN'S FUNCTION FOR HYPERBOLIC-PARABOLIC SYSTEMS

引用

Acta Mathematica Scientia 2009年第6期29卷 1556-1572页

作者： Tai-ping Liu Yanni zeng Department of Mathematics Stanford University Stanford CA 94305 USA Department of Mathematics University of Alabama at Birmingham Birmingham AL 35294 USA

We study the Green＇s function for a general hyperbolic-parabolic system, including the Navier-Stokes equations for compressible fluids and the equations for magnetohydrodynamics. More generally, we consider general systems under the basic Kawashima- Shizuta type of conditions. The first result is to make precise the secondary waves with subscale structure, revealing the nature of coupling of waves pertaining to different characteristic families. The second result is on the continuous differentiability of the Green＇s function with respect to a small parameter when the coefficients of the system are smooth functions of that parameter. The results significantly improve previous results obtained by the authors.

关键词： Green's functions hyperbolic-parabolic systems conservation laws Navier-Stokes equations for compressible fluids

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：