检索结果-南通市图书馆

Antibacterial HA-coatings on bioresorbable Mg alloy

Journal of Magnesium and Alloys 2024年第5期12卷 1965-1985页

作者： K.V.Nadaraia D.V.Mashtalyar M.A.Piatkova A.I.Pleshkova I.M.Imshinetskiy M.s.Gerasimenko E.A.Belov V.V.Kumeiko D.N.Kozyrev K.A.Fomenko V.V.Mostovaya B.R.Torpanov A.R.Biktimirov I.s.Osmushko s.L.sinebryukhov s.V.Gnedenkov Institute of Chemistry FEB RAs 159 Pr.100-letiya VladivostokaVladivostok 690022Russia Far Eastern Federal University 10 Ajax BayRussky IslandVladivostok 690922Russia A.V.Zhirmunsky national scientific center of Marine Biology FEB RAs 17 St.PalchevskogoVladivostok 690041Russia Regional Clinical Dermatovenerological Dispensary 18 V St.GamarnikaVladivostok 690033Russia NMIC“Treatment and Rehabilitation center” 3 Ivankovskoe highwayMoscow 125367Russia

In this study,a calcium-phosphate coating was formed on a Mg-Mn-Ce alloy by the plasma electrolytic oxidation(PEO).The antibiotic vancomycin,widely used in the treatment of infections caused by staphylococcus aureus(***),was impregnated into the *** with vancomycin showed high bactericidal activity against *** mechanical and electrochemical properties of the formed coatings were studied,as well as in vitro cytotoxicity tests and in vivo tests on mature male rats were *** to sEM,EDs,XRD and XPs data,coatings had a developed morphology and contained hydroxyapatite,which indicates high *** analysis of roughness of coatings without and with vancomycin did not reveal any differences,confirming the high roughness of the *** electrochemical tests,an increase in corrosion resistance by more than two times after the application of PEO coatings was *** to the results of an in vivo study,after 28 days of the implantation of samples with calcium phosphate PEO coating and vancomycin,no signs of inflammation were observed,while an inflammatory reaction developed in the area of implantation of bare alloy,followed by *** release tests from the coatings show a sharp decrease in the concentration of the released antibiotic on day 7 and then a gradual decrease until day *** the experiment,no significant deviations in the condition and behavior of the animals were observed;clinical tests did not reveal a systemic toxic reaction.

关键词： Bioactive coatings Biocompatibility Mg alloy Plasma electrolytic oxidation Hydroxyapatite Vancomycin

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

Ion heat transport in electron cyclotron resonance heated L-mode plasma on the T-10 tokamak

引用

Plasma science and Technology 2024年第4期26卷 52-60页

作者： V.A.KRUPIN M.R.NURGALIEV A.R.NEMETs I.A.ZEMTsOV s.D.sUNTsOV T.B.MYALTON D.s.sERGEEV N.A.sOLOVEV D.V.sARYCHEV D.V.RYJAKOV s.N.TUGARINOV N.N.NAUMENKO national Research Centre“Kurchatov Institute” Moscow 123182Russia Bauman Moscow state Technical University Moscow 105005Russia Institution“Project center ITER” Moscow 123098Russia JsC“sOLAR” Minsk 220034Belarus

Anomalous ion heat transport is analyzed in the T-10 tokamak plasma heated with electron cyclotron resonance heating(ECRH) in second-harmonic extra-ordinary mode. Predictive modeling with empirical scaling for Ohmical heat conductivity shows that in ECRH plasmas the calculated ion temperature could be overestimated, so an increase of anomalous ion heat transport is required. To study this effect two scans are presented: over the EC resonance position and over the ECRH power. The EC resonance position varies from the high-field side to the low-field side by variation of the toroidal magnetic field. The scan over the heating power is presented with on-axis and mixed ECRH regimes. Discharges with high anomalous ion heat transport are obtained in all considered regimes. In these discharges the power balance ion heat conductivity exceeds the neoclassical level by up to 10 times. The high ion heat transport regimes are distinguished by three parameters: the ratio Te/Ti, the normalized electron density gradient R/■, and the ion–ion collisionality νii~*. The combination of high Te/Ti, high νii~*, and R/■=6-10 results in values of normalized anomalous ion heat fluxes up to 10 times higher than in the low transport scenario.

关键词： tokamak L-mode electron cyclotron resonance heating ion heat transport

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

Chinese guidelines for diagnosis and treatment of pancreatic cancer 2018(English version)

引用

Chinese Journal of Cancer Research 2019年第2期31卷 278-294页

作者： national Health Commission of the People's Republic of China national Health Commission of the People’s Republic of China

Pancreatic ductal adenocarcinoma is one of the common pancreatic neoplasms, with extremely high malignancy. The latest statistical data from national Cancer center of China showed that the incidence of pancreatic cancer had increased dramatically from 2000 to 2011. In 2015, the incidence of pancreatic cancer in China ranked ninth among malignant tumors, and the mortality rate was the sixth in malignant tumors.

关键词： Pancreatic Chinese guidelines treatment

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

Regional differences and determinants of built-up area expansion in China

引用

science China Earth sciences 2007年第12期50卷 1835-1843页

作者： HUANG JiKun1,2,ZHU LiFen3,1 & DENG XiangZheng1,2 1 center for Chinese Agricultural Policy,Chinese Academy of sciences,Beijing 100101,China 2 Institute of Geographic sciences and Natural Resources Research,Chinese Academy of sciences,Beijing 100101,China 3 Research center of the Economy of the Upper Reaches of the Yangtze River,Chongqing Technology and Business University,Chongqing 400067,China 1. center for Chinese Agricultural Policy Chinese Academy of Sciences Beijing 100101 China 2. Institute of Geographic sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China 3. Research center of the Economy of the Upper Reaches of the Yangtze River Chongqing Technology and Business University Chongqing 400067 China

Based on remote sensing data on land use provided by the Chinese Academy of sciences and socio-economic data collected by the authors,this paper analyzes the trends and regional differences in built-up area(BUA) expansion in China from the late 1980s to 2000,and empirically estimates the major determinants of BUA expansion in different regions in 1996―*** 1989―2000,although China's overall BUA expansion accelerated,the trends differed significantly among *** expansion in the central and western regions accelerated significantly,but it slowed down considerably in the east-ern *** estimation results from our econometric analysis reveal that BUA expansion in the eastern region reached a period when economic growth had no further significant impact on per capita BUA,the land utilization in this region has become more intensive with further expansion of the *** the central and western regions,the BUA has expanded remarkably due to the relatively more flexible land development policies and the relatively cheap land ***,as the econ-omy continues to grow rapidly,policies relating to BUA expansion and cultivated land reductions may face more serious challenges in the central and western regions.

关键词： built-up area, land use, regional difference, determinants, China

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

LiDAR-based estimation of bounding box coordinates using Gaussian process regression and particle swarm optimization

引用

Biomimetic Intelligence & Robotics 2024年第1期4卷 24-35页

作者： Vinodha K. E.s.Gopi Tushar Agnibhoj Department of Electronics and Communication Engineering National Institute of Technology TiruchirappalliTamil Nadu620015India

Camera-based object tracking systems in a given closed environment lack privacy and *** this study,light detection and ranging(LiDAR)was applied to track objects similar to the camera tracking in a closed environment,guaranteeing privacy and *** primary objective was to demonstrate the efficacy of the proposed technique through carefully designed experiments conducted using two *** scenario I,the study illustrates the capability of the proposed technique to detect the locations of multiple objects positioned on a flat surface,achieved by analyzing LiDAR data collected from several locations within the closed *** II demonstrates the effectiveness of the proposed technique in detecting multiple objects using LiDAR data obtained from a single,fixed ***-time experiments are conducted with human subjects navigating predefined *** individuals move within an environment,while LiDAR,fixed at the center,dynamically tracks and identifies their locations at multiple *** demonstrate that a single,strategically positioned LiDAR can adeptly detect objects in motion around ***,this study provides a comparison of various regression techniques for predicting bounding box *** process regression(GPR),combined with particle swarm optimization(PsO)for prediction,achieves the lowest prediction mean square error of all the regression techniques examined at *** tuning of GPR using PsO significantly minimizes the regression *** of the experiment pave the way for its extension to various real-time applications such as crowd management in malls,surveillance systems,and various Internet of Things scenarios.

关键词： LiDAR Data acquisition Bounding box Gaussian process regression Particle swarm optimization(PsO)

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

Neural dynamics for improving optimiser in deep learning with noise considered

引用

CAAI Transactions on Intelligence Technology 2024年第3期9卷 722-737页

作者： Dan su Predrag s.stanimirović Ling Bo Han Long Jin school of Information science and Engineering Lanzhou UniversityLanzhouChina Faculty of sciences and Mathematics University of NišNišSerbia school of Electronics and Information Engineering Guangdong Ocean UniversityZhanjiangChina

As deep learning evolves,neural network structures become increasingly sophisticated,bringing a series of new optimisation *** example,deep neural networks(DNNs)are vulnerable to a variety of *** neural networks under privacy constraints is a method to alleviate privacy leakage,and one way to do this is to add noise to the ***,the existing optimisers suffer from weak convergence in the presence of increased noise during training,which leads to a low robustness of the *** stabilise and improve the convergence of DNNs,the authors propose a neural dynamics(ND)optimiser,which is inspired by the zeroing neural dynamics originated from zeroing neural *** authors first analyse the relationship be-tween DNNs and control ***,the authors construct the ND optimiser to update network ***,the proposed ND optimiser alleviates the non-convergence problem that may be suffered by adding noise to the gradient from different ***,experiments are conducted on different neural network structures,including ResNet18,ResNet34,Inception-v3,MobileNet,and long and short-term memory *** results using CIFAR,YouTube Faces,and R8 datasets demonstrate that the ND optimiser improves the accuracy and stability of DNNs under noise-free and noise-polluted *** source code is publicly available at https://***/LongJin-lab/ND.

关键词： deep learning deep neural networks

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

AN EMBEDDED BOUNDARY METHOD FOR ELLIPTIC AND PARABOLIC PROBLEMs WITH INTERFACEs AND APPLICATION TO MULTI-MATERIAL sYsTEMs WITH PHAsE TRANsITIONs

引用

Acta Mathematica scientia 2010年第2期30卷 499-521页

作者： shuqiang Wang Roman samulyak Tongfei Guo Department of Applied Mathematics and statistics Stony Brook University Stony Brook NY 11794 USA Computational science center Brookhaven National Laboratory Upton NY 11973 USA

The embedded boundary method for solving elliptic and parabolic problems in geometrically complex domains using Cartesian meshes by Johansen and Colella （1998, J. Comput. Phys. 147, 60） has been extended for elliptic and parabolic problems with interior boundaries or interfaces of discontinuities of material properties or solutions. second order accuracy is achieved in space and time for both stationary and moving interface problems. The method is conservative for elliptic and parabolic problems with fixed interfaces. Based on this method, a front tracking algorithm for the stefan problem has been developed. The accuracy of the method is measured through comparison with exact solution to a two-dimensional stefan problem. The algorithm has been used for the study of melting and solidification problems.

关键词： embedded boundary method elliptic interface problem front tracking ste-fan problem

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

定量CT在健康管理中的应用指南(2024)

引用

中华健康管理学杂志 2024年第9期18卷 645-654页

作者：中华医学会健康管理学分会国家骨科医学中心(首都医科大学附属北京积水潭医院) 国家级放射影像专业质控中心国家老年疾病临床医学研究中心(解放军总医院) 中国老年学和老年医学学会骨质疏松分会《中华健康管理学杂志》编辑委员会程晓光曾强郭智萍李永丽汪菲过哲孙永兵不详首都医科大学附属北京积水潭医院北京100035 解放军总医院第二医学中心北京100853 阜外华中心血管病医院郑州451404 河南省人民医院

定量CT(QCT)在我国骨质疏松症的诊断中已被广泛规范使用,促进了中国骨质疏松症的规范诊疗。近几年QCT在肝脏脂肪、腹部内脏脂肪测量方面也取得重要进展,其准确性和可重复性均得到了验证。QCT因其成像技术的优势,在健康管理中的应用前景... 详细信息

定量CT(QCT)在我国骨质疏松症的诊断中已被广泛规范使用,促进了中国骨质疏松症的规范诊疗。近几年QCT在肝脏脂肪、腹部内脏脂肪测量方面也取得重要进展,其准确性和可重复性均得到了验证。QCT因其成像技术的优势,在健康管理中的应用前景广阔。来自全国多学科的专家根据近几年国际和国内QCT临床应用共识及文献,经过充分的讨论共同制定了本指南。本指南主要适用场景为健康管理学领域,共包括11条推荐意见,主要针对基于QCT技术在骨质疏松症的健康体检模式、适用人群、诊断标准、测量、随访等内容进行了规范推荐,旨在为QCT骨质疏松症临床应用方面提供科学、具体的指导,促进骨质疏松症的规范诊疗。此外,本指南对QCT技术在肝脏脂肪和腹部内脏脂肪健康体检模式及测量层面进行了统一,以确保临床医师充分利用QCT技术优势对脂肪肝和肥胖的防治进行科学指导。

关键词：体层摄影术,X线计算机骨质疏松脂肪肝肥胖症健康调查健康促进健康管理指南

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

Lung Ultrasound Protocol for Diagnosis of 2019-nCoV Pneumonia and Remote Consultation( 1st Edition)

引用

中华超声影像学杂志 2020年第2期 93-103页

作者： Ultrasound Medicine society Chinese Medical Association Respiratory Disease society Chinese Medical Association cardiovascular Imaging Group of cardiovascular Disease society Chinese Medical Association Ultrasound Medicine Committee China Medicine Education Association sichuan Ultrasound Medicine Quality Control center

since December 2019, the emergence of a new type of coronavirus (sARA-CoV-2) pneumonia (COVID-19) in Wuhan, Hubei Province, has become a national public health emergency. The disease diagnosis is currently confirmed to be based on nucleic acid test and high-resolution CT (High Resolution CT, HRCT). Lung ultrasound (LUs) has been used in clinical practice in the differential diagnosis of lung exudative inflammation lesions, and in the evaluation of thoracic effusion, pneumothorax and the evaluation of patients with dyspnea and acute respiratory failure, as well as in the treatment monitoring to guide the treatment more efficiently. The clinical LUs application has been formed a number of domestic and foreign expert consensus. As a fast, convenient, radiation-free and easy-to-implement lung disease visualization technology at the bedside, LUs plays a role in the treatment of critically ill patients of COVID-19 . In view of the problems of LUs performance in different lung diseases, LUs has not been widely used in front-line clinic and ICU and needs to be fully mastered by clinicians in routine practice. starting from the increasing number of severe patients with COVID-19 pneumonia, the urgent need for immediate dynamic and effective image monitoring of lung lesions in severe patients bedside and the actual clinical needs of the accurate disease changes assessment and the evaluation of treatment timely, in line with the principle of ""problem-oriented, information technology support, model innovation"", the integration of various resources, and put forward a targeted short-term can achieve a wide range of efficient applications of LUs technology of the COVID-19 pneumonia, an enhenced remote diagnosis consultation platform should be established. To promote the clinical application of LUs in the routine diagnosis and treatment of COVID-19 pneumonia in various regions, it is recommended to use the 5G remote consultation platform to achieve cross-institutional, cross-regio

关键词：

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

Age-associated alternations in cardiac β-adrenergic receptor signaling

引用

Journal of Geriatric Cardiology 2005年第4期2卷 254-257页

作者： Jing MA, shiwen WANG, Ruiping XIAO The Institute of Molecular Medicine & the Institute of cardiovascular science, Peking University, Beijing 100871, China The Institute of Geriatric Cardiology, Chinese PLA General Hospital, Beijing 100853, China Laboratory of cardiovascular science, Gerontology Research center, national Institute on Aging, Baltimore, MD 21224, UsA The Institute of Molecular Medicine & the Institute of cardiovascular science Peking University Beijing 100871 China The Institute of Geriatric Cardiology Chinese PLA General Hospital Beijing 100853 China Laboratory of cardiovascular science Gerontology Research Center National Institute on Aging Baltimore MD 21224 USA

During aging, cardiac contractile response to β-AR stimulation is decreased in humans and animal models. Recent studies demonstrate that the positive inotropic effects of both β1-AR and β2-AR stimulation are significantly decreased with *** is accompanied by decreases in both β-AR subtype densities and a reduction in membrane adenylyl cyclase activity. However,neither G protein-coupled receptor kinases (GRKs) nor inhibitory G proteins (Gi) appears to contribute to the age-associated reduction in the β-AR modulation of contraction. Thus, while both aging and chronic heart failure exhibit a diminution in cardiac β-AR responsiveness, only heart failure exhibits increased GRK-mediated desensitization ofβ-Ars and an upregulation of Gi proteins.

关键词： Nature adrenergic receptor signaling Age-associated alternations in cardiac

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：