检索结果-南通市图书馆

In situ TiN-reinforced CoCr2FeNiTi(0.5) high-entropy alloy composite coating fabricated by laser cladding

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2020年第10期39卷 1190-1195页

作者： Ya-xiong guo Qi-Bin Liu Xiao-Juan Shang College of Materials and Metallurgy Guizhou UniversityGuiyang 550025China Guizhou Province Key Laboratory of Materials Structure and Strength Guiyang 550025China

The fcc structural CoCr2 FeNiTi(0.5) high-entropy alloy(HEA) composite coating with TiN particles reinforced was acquired by laser cladding on the commercial904 L stainless *** results show that phase structure is mainly composed of fcc solid solution and TiN *** coating exhibits excellent structural stability below850℃.The microstructure consists of irregular dendrite and TiN *** electron microscopy(TEM) results reveal that the close-packed plane of fcc phase is(111) with interplanar spacing of ~ 0.208 *** interface between TiN and fcc matrix is *** the angle of boundary between dendrite and matrix is ~ 65°.The hardness and corrosion resistance of coating have much improvement compared with those of substrate.

关键词： TiN particle reinforced High-entropy alloy Semi-coherent interface Laser cladding

Fully Nonlinear Time Domain Analysis for Hydrodynamic Performance of An Oscillating Wave Surge Converter

在线全文

学校读者我要写书评

暂无评论

China Ocean Engineering 2018年第5期32卷 582-592页

作者： SUN Shi-yan SUN Shi-li WU guo-xiong School of Naval Architecture & Ocean Engineering Jiangsu University of Science and Technology College of Shipbuilding Engineering Harbin Engineering University Department of Mechanical Engineering University College London

The hydrodynamic behaviour of an oscillating wave surge converter(OWSC) in large motion excited by nonlinear waves is investigated. The mechanism through which the wave energy is absorbed in the nonlinear system is analysed. The mathematical model used is based on the velocity potential theory together with the fully nonlinear boundary conditions on the moving body surface and deforming free surface. The problem is solved by the boundary element method. Numerical results are obtained to show how to adjust the mechanical properties of the OWSC to achieve the best efficiency in a given wave, together with the nonlinear effect of the wave height. Numerical results are also provided to show the behaviour of a given OWSC in waves of different frequencies and different heights.

关键词： wave energy oscillating wave surge converter nonlinear wave/structure interactions boundary element method

Successful management of life-threatening aortoesophageal fistula: A case report and review of the literature

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2022年第12期10卷 3814-3821页

作者： Xue-Qing Zhong guo-xiong Li Department of Gastroenterology and Hepatology Hangzhou Normal University Affiliated HospitalHangzhou 310015Zhejiang ProvinceChina Medical College Hangzhou Normal UniversityHangzhou 311121Zhejiang ProvinceChina

BACKGROUND Aortoesophageal fistula(AEF)is a rare but life-threatening cause of upper gastrointestinal *** a handful of cases of successful management of AEF caused by esophageal cancer have been *** purpose of this study is to report a case of AEF managed by endovascular aortic repair and review the relevant *** SUMMARY A 66-year-old man with upper gastroenterology bleeding presented at the Emergency Department of our hospital complaining of chest pain,fever and hematemesis for 6 *** had vomited 400 mL of bright-red blood and experienced severe chest pain 6 h *** had a past medical history of advanced esophageal *** received chemoradiotherapy but stopped 8 mo prior because of intolerance.A chest contrast computed tomographic scan revealed communication between the esophagus and the descending aorta as well as a descending aortic *** to the symptoms and imaging findings,AEF was our primary *** patient underwent aortic angiography,which indicated AEF and descending aortic *** percutaneous thoracic endovascular aortic repair(TEVAR)of the descending aorta was performed,and bleeding was controlled after *** received antibiotics and was discharged after ***,he died 2 mo after the TEVAR due to cancer *** Although AEF is a lethal condition,timely diagnosis and TEVAR may successfully control bleeding.

关键词： Upper gastrointestinal bleeding Aortoesophageal fistula Thoracic endovascular aortic repair Esophageal cancer Chest pain Case report

Screening of methylation genes in age-related cataract

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Ophthalmology(English edition) 2018年第7期11卷 1102-1107页

作者： Li Wang Peng Li xiong guo Department of Medicine Technology Optometry Xi’an Medical University Public Health School Health Science Center Xi’an Jiaotong University Department of Ophthalmology the 451st Hospital of the PLA

AIM： To analyze and screen the methylation status of whole-genome in age-related cataract samples. METHODS： Anterior lens capsule samples were collected from age-related cortical cataract patients over 50 years of age with LOCS III score of nuclear color ≥4 along with control subjects. DNAs were extracted and subjected to methylation microarray for the identification of methylated genes employing the high-throughput sequencing approach. RESULTS： Compared with the control group, 843 sites were found methylated, including 802 hypermethylation sites with 542 corresponding genes, 41 demethylation sites with 29 corresponding sites. COL4 A1, GJA3, SIPA1 L3 were confirmed by mass spectrometry, the results were consistent with high-throughput sequencing. CONCLUSION： DNA methylation microarrays is an efficient way for screening the aberrantly methylated genes. In this study, we are able to screen a few age-related cataract genes such as COL4 A1, GJA3, and SIPA1 L3 for their aberrant methylation patterns in cataract patients however further work is warranted to understand the significance of these findings.

关键词： age-related cataract methylation genes methylation microarrays

Significance of viral status on occurrence of hepatitis B-related hepatocellular carcinoma

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2014年第20期20卷 5999-6005页

作者： Li-Shuai Qu guo-xiong Zhou Department of Gastroenterology Affiliated Hospital of Nantong University

Hepatitis B virus(HBV)infection remains a challenging global health problem,with more than 350 million people chronically infected and at risk of developing hepatocellular carcinoma(HCC).Interactions that occur among host,environmental,and viral factors determine the natural course and predict the prognosis of patients with chronic HBV *** the past decades,several important viral factors of predictive of HCC have been identified,such as high hepatitis B surface antigen level,seropositivity of hepatitis B e antigen,high viral load,viral genotype,and specific viral sequence *** of certain viral risk factors for HCC development and stratification of patient risk are very important to perform future surveillance *** this article,we thus reviewed the risk of viral factors involved in hepatocarcinogenesis.

关键词： Hepatitis B virus Hepatocellular carcinoma Mutation Serum hepatitis B virus-DNA levels Genotype

Comparison of diathermic high-frequency capsulorhexis and continuous curvilinear capsulorrhexis in white cataract surgery

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Ophthalmology(English edition) 2018年第8期11卷 1317-1321页

作者： Li Wang Peng Li xiong guo Department of Ophthalmology Department of Medical and Research Technology Xi'an Medical University School of Public Health Health Science CenterXi'an Jiaotong University Department of Ophthalmology the 451st Hospital of the PLA

AIM： To compare the corneal endothelial cell counts pre-and post-operation, ultrastructure of anterior lens capsule and surgical completion after diathermic highfrequency capsulorhexis（DHC） and continuous curvilinear capsulorrhexis（CCC） applied in phacoemulsification（PHACO） of white cataract ***： Sixty-six eyes of 66 patients（33 males and 33 females） with cataract aged between 60 and 80 y（mean 72.5±5.5） were recruited and undergone the surgery from June 2014 to November 2016. Anterior lens capsule, derived from two kinds of capsulorhexis, were randomly divided into two groups according to random number table. The ultrastructure of the capsule edge and its closer tissue were observed by transmission electron microscopy（TEM） and optical microscopy respectively. The surgical completion conditions and corneal endothelial cell counts were analyzed pre-and post-operation after two ***： The capsule derived from CCC had smooth edge, well-organized cellular structure and the cells filling into the cutting edge under TEM and optical microscopy. The capsule derived from DHC had an approximate 60 banded area of cell degeneration and necrosis, with dentiform prominences at the edge of the capsule, and no cell structure was observed at this area. The corneal endothelial cell counts of both groups were slightly declined 1 wk post-operation compared with that of preoperation. There was no statistical difference between the two groups（t=1.63, P〉0.05）.CONCLUSION： DHC shows good clinical value in white mature and hypermature cataract surgery.

关键词： diathermic high-frequency capsulorhexis continuous curvilinear capsulorrhexis ultrastructure cornealendothelial cell

An Accelerated Proximal Gradient Algorithm for Hankel Tensor Completion

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of the Operations Research Society of China 2024年第2期12卷 461-477页

作者： Chuan-Long Wang xiong-Wei guo Xi-Hong Yan Key Laboratory of Engineering and Computational Science Shanxi Provincial Department of EducationJinzhong 030619ShanxiChina Department of Mathematics Taiyuan Normal UniversityJinzhong 030619ShanxiChina

In this paper,an accelerated proximal gradient algorithm is proposed for Hankel tensor completion *** our method,the iterative completion tensors generated by the new algorithm keep Hankel structure based on projection on the Hankel tensor ***,due to the special properties of Hankel structure,using the fast singular value thresholding operator of the mode-s unfolding of a Hankel tensor can decrease the computational ***,the convergence of the new algorithm is discussed under some reasonable ***,the numerical experiments show the effectiveness of the proposed algorithm.

关键词： Hankel tensor Tensor completion Accelerated proximal gradient algorithm

Electrodeposited Sn-based Catalysts for CO2 Electroreduction

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2020年第2期39卷 206-213,183页

作者： YE Ke WANG guo-xiong BAO Xin-He State Key Laboratory of Catalysis Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education College of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China

Electrochemical CO2 reduction reaction(CO2RR) has been considered as a feasible avenue for simultaneous conversion of renewable energy and CO2. Economic and technical analysis suggests that the production of valuable C1 chemicals such as formic acid and CO is the most economically practicable route for CO2RR. This perspective summarizes the performance of electrodeposited Sn-based catalysts for C1 chemicals production and the relative mechanism of CO2RR. Further fundamental understanding and industrial applications of electrodeposited Sn-based catalysts in CO2 electrolyzer device are also discussed.

关键词： tin-based catalysts electrodeposition technology alloy interface electrochemical carbon dioxide reduction reaction

One-dimensional consolidation of visco-elastic aquitard due to withdrawal of deep-groundwater

在线全文

学校读者我要写书评

暂无评论

Journal of Central South University 2012年第1期19卷 282-286页

作者： LIU Jia-cai LEI guo-gang MEI guo-xiong College of Transportation Science and Engineering Nanjing University of TechnologyNanjing 210009China Nanjing Water Conservancy Construction Corporation Nanjing 210036China

One-dimensional consolidation of visco-elastic aquitard due to withdrawal of deep-groundwater was *** model was used to simulate visco-elastic characteristic of *** solutions of the governing equation were obtained by applying Laplace transform with respect to time,and then the pore-pressure,strain and deformation of the aquitard could be calculated by Laplace inversion.A case was analyzed to validate the correctness of the present ***,some consolidation properties of the problem were *** of the average degree of consolidation defined by pore pressure with that defined by settlement shows that they are different and the maximum difference is 22.8%.The influences of parameters of Merchant model and the rate of the water level on the consolidation are *** smaller the viscosity coefficient is,the later the rate of consolidation *** rate of consolidation is decreased with the decrease of the rate of the water level ***,the lagged effect of land subsidence should be considered in the actual project.

关键词： consolidation withdrawal of deep-groundwater visco-elastic characteristic Laplace inversion