检索结果-南通市图书馆

Journal of Thermal Science 2025年第1期34卷 34-49页

作者： WANG Shuang mu Lin LI Xue XIE jun DONG Ming School of Energy and Power Engineering Dalian University of Technology School of Optical Information and Energy Engineering Wuhan Institute of Technology School of Energy and Environment Shenyang Aerospace University

Turbulent agglomeration is viewed as a promising technology for enhancing fine particle removal *** better understand particle transport,agglomeration behaviors,and fluid-particle interactions,we numerically explored these phenomena under cylindrical vortex wake influence using a coupled large eddy simulation and discrete element method（LES-DEM） *** validity of the LES approach was verified by comparison with available direct numerical simulation（DNS） *** adopted the Johnson-Kendall-Roberts（JKR） contact model for particle-particle *** particle dispersion and agglomeration characteristics of particles with different diameters（dp=2-20 μm） in the laminar and transition of shear layer（TrSL） flow regimes were *** particles were concentrated at the vortex centers,while larger particles accumulated around the *** agglomeration efficiency exhibited an M-shaped profile spanwise（y-direction）.With increasing Reynolds number,the agglomeration efficiency and turbulence intensity *** particle agglomeration efficiency peaks at a certain Reynolds ***,at higher Reynolds numbers,reducing the residence time of particles in the flow field decreases the agglomeration efficiency.

关键词： discrete element method large eddy simulation microparticle particle agglomeration

Improvement of MDA and SOD Expression and Optic Neuroprotection in Glaucoma Mice by Travoprost and β-Blocker

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Biomedical Engineering(English Edition) 2023年第2期32卷 73-78页

作者： LIU Hai-hua LIN Yi-long zhong jun-mu LIU Jian-qiang Longyan First Affiliated Hospital of Fujian Medical University Fujian Longyan 364000China

Objective:The goal of this study was to see if travoprost and β-blockers improved MDA and SOD expression as well as neuroprotection in glaucoma ***:One hundred healthy SPF SD rats were randomly allocated into five groups:travoprost and β-blocker group,travoprost group,β-blocker group,model group and blank group,with 20 rats in each *** created a glaucoma mouse model in which the blank group and the model group received the same volume of saline,the β-blocker group received β-blocker,the travoprost group received travoprost,and the travo Prost and β-blocker groups received travo Prost and βreceptor *** cell apoptosis level,intraocular pressure level,MDA and SOD levels were measured after drug ***:The results showed that the levels of intraocular pressure,the apoptosis rate of optic nerve,SOD and MDA of retina in travoprost and β-blocker group,travoprost group,β-blocker group and model group were greater than those in blank group(P<0.05).In comparison to the model group,the intraocular pressure level,optic nerve apoptosis rate,and retinal MDA level in the travoprost and β-blocker group continued to fall,while the retinal SOD level was considerably elevated(P<0.05).The continuous application of travoprost and β-blocker resulted in a constant drop in intraocular pressure,optic nerve apoptosis rate and MDA level in the retina,whereas the SOD level was dramatically elevated(P<0.05).Conclusion:In glaucoma mice,travoprost in combination with a β-blocker can greatly increase MDA expression,SOD and neuroprotection.

关键词： travoprost β-blocker glaucoma optic nerve protection

Correlation of Variables between the Dominant and Non-dominant Eyes in Healthy Young People

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Biomedical Engineering(English Edition) 2022年第3期31卷 120-128页

作者： LIN Yi-long ZHANG Kai-ping LIU Hai-hua zhong jun-mu LIU Jian-qiang Department of Ophthalmology Longyan First Affiliated Hospital of Fujian Medical UniversityLongyan Fujian 364000China

Objective:To investigate the correlation of variables between dominant and non-dominant eyes in healthy young ***:300 cases(600 eyes)of healthy young volunteers recruited in our hospital from March 2020 to February 2022were selected as the research *** general data of the volunteers were collected and the dominant eye,diopter,biological parameters and retinal blood flow density were *** compared all the test indexes of volunteers with different dominant eyes,and compared the refractive parameters,biological parameters and retinal blood flow density between the dominant and non-dominant eyes of ***:Among the 300volunteers,62.67%(188/300)had the right eye as the dominant eye and 37.33%(112/300)had the left eye as the dominant *** was no significant difference in gender,BMI and equivalent spherical lens(SE)among the subjects with different dominant eyes(P>0.05).The SE and spherical diopter(S)of dominant eye were higher than that of non-dominant eye(P0.05);There was no significant difference in SE and C between dominant and non-dominant eye in volunteers with SE difference≤0.5 D and 0.51-1.25 D(P>0.05),and spherical diopter(S)of dominant eye was higher than that of non-dominant eye(P2.00 D,the SE and spherical diopter(S)of dominant eye were higher than those of non-dominant eye(P0.05).The levels of RA and CA in the dominant eye of 300 volunteers were lower than those in the non-dominant *** RA and CA levels of the dominant eye were lower than those of the non-dominant eye in volunteers with RA difference≤0.50 D,0.51-1.25 D,1.26-2.00 D,>2.00 D(P<0.05).There was no significant difference in the levels of axial length(AL),central corneal thickness(CCT),anterior chamber depth(ACD)and lens thickn

关键词： young people dominant eye ametropia biological parameters retinal blood flow density

Thickness and sp3 bond modulation of（Ti/tetrahedral amorphous carbon）_n multilayer coatings

在线全文

学校读者我要写书评

暂无评论

Tungsten 2025年第1期7卷 152-160页

作者： Zhi-jun Xie Jia-Lin Li Ling Gong Xiang-Li zhong Hong-Jia Song Jin-Bin Wang National-Provincial Laboratory of Special Function Thin Film Materials School of Materials Science and Engineering Xiangtan University

The durability of wear-resistant tetrahedral amorphous carbon（ta-C） coatings is intimately linked to their thickness and the concentration of *** enhance the lifespan of the coatings,we have prepared a multilayer coating consisting of alternating layers of Ti and ta-C,denoted as（Ti/ta-C）_n,using arc ion plating.A multi-layer structure in conjunction with stage cooling is employed to enhance the thickness and promote *** results indicate that the ID/IGvalue,representing the ratio of the intensity of the D peak to that of the G peak in Raman spectroscopy,decreases from 0.85 when no stage cooling is applied to 0.35 when stage cooling is employed,suggesting an enhancement in the fraction of sp3bonds within the *** obtained（Ti/ta-C）_n multilayer coating without peeling off has a maximum thickness of 1.14 μm,which is almost double that of the ta-C coating single layer *** the same time,the coating has a low coefficient of friction,down to 0.069,and maintains excellent friction properties with a wear rate of 3.4×10-6mm3·N-1·*** results conclusively show that the preparation technology can enhance both thickness and sp3bonding in ta-C coatings,significantly expanding their utility across tools,molds,and precision engineering components.

关键词： Arc ion plating multilayer structure sp3 bond Ta-C coating Wear resistance

Natural quinone reductase inducers from Xinjiang special plants

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Natural quinone reductase inducers from Xinjiang special pla...

Ethylene Polymerization and Copolymerization with Polar Monomers by Benzothiophene-bridged BPMO-Pd Catalysts

2011年全国药物化学学术会议——药物的源头创新

作者： LI Ning~(1,*),MA zhong-jun~2,LI mu-jie~1,LIU Fen~1,WANG Hong-bo~1,LI Xian~1,JIA Xiao-guang~3 1(School of Traditional Chinese Materia Medica,Shenyang Pharmaceutical University,Shenyang 110016,China ) 2(Department of Ocean Science and Engineering,Zhejiang University,Hangzhou 310058,China) 3(XinJiang Institute of Chinese Materia Medica and Ethnodrug,Urumqi,830002,China)

＜正＞The malignant tumor is still the leading disease threatening the human life and health at *** and more attention has been caused on cancer *** chemoprevention means to halt or reverse development and progression of cancer by administering synthetical or natural *** of phaseⅡenzyme play an important role in cancer chemoprevention,while quinone reductase（QR） is used as measurement index for the expression of phaseⅡ*** the QR inducers screening system,the bioactive constituents from Xinjiang special plants Alhagi pseudalhagi,Capparis spinosa,Glycyrrhiza inflate, Rhaponticum carthamoides were studied systematically.17 compounds,including 1 new compound,were isolated from the active site of Alhagi pseudalhagi.17 compounds,including 1 new natural product,were isolated from the active site of Capparis spinosa.31 compounds, including 2 new natural products,were isolated from the active site of Glycyrrhiza inflate.20 compounds,were isolated from the active site of Rhaponticum carthamoides.

关键词： cancer chemoprevention quinone reductase inducer Alhagi pseudalhagi Capparis spinosa Glycyrrhiza inflate Rhaponticum carthamoides

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2020年第6期38卷 579-586页

作者： Hong-Liang mu jun-Hao Ye Guang-Lin Zhou Kang-Kang Li zhong-Bao Jian State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China

A series of new bisphosphine-monoxide(BPMO)ligands based on benzothiophene backbone and the corresponding palladium complexes{k2-P(O)(Ph)2-3-PR1R2-C8H4S}PdMeCl{2a:R1=R2=Ph;2b:R1=R2=2-0Me-Ph;2c:R1=R2=2-CF3-Ph;2d:Rl=Ph,R2=2-(2',6'-(OMe)2C6Hz)-C6H4}were synthesized and fully characterized by1H-,13C-,31P-,and 2D-NMR spectroscopy and single-crystal X-ray *** the presence of Na+B[3,5-(CF3)2C6H3]4(NaBArF),these complexes showed very high activities(up to 2.0 x 10’g-mol-1.h-)for ethylene *** significantly,these catalysts enabled the copolymerization of ethylene with a broad scope of commercially available polar comonomers such as acrylates,acrylic acid,acrylonitrile,vinyltrialkoxysilane,allyl acetate,and long-chain 6-chloro-1-hexene to give functionalized polyethylene with reasonable catalytic activities(up to 105 g-mol-l.h-)and incorporations(up to 5.3 mol96).This contribution suggests that,besides the modulation of conventionally steric and electronic factors,the connectivity(at dfferent linking positions)of BPMO(P,O)donors to the heteroaryl backbone also greatly infuences the catalyst properties in terms of catalytic activity,polymer branching content,comonomer scope,and comonomer incorporation.

关键词： Olefin polymerization Bisphosphine monoxide Plladium Polar monomers Heteroaryl backbone

Integrating transcriptomes and somatic mutations to identify RNA methylation regulators as a prognostic marker in hepatocellular carcinoma

在线全文

学校读者我要写书评

暂无评论

Hepatobiliary & Pancreatic Diseases International 2021年第1期20卷 34-45页

作者： Yue Yan Yun-Hai Luo Dao-Feng Zheng Tong mu zhong-jun Wu Department of Hepatobiliary Surgery The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China

Background:RNA methylation modifying plays an important role in the occurrence and progression of a range of human cancers including hepatocellular carcinoma(HCC),which is characterized by a mass of genetic and epigenetic ***,the treatment targeting these alterations is ***:We used comprehensive bioinformatics analysis to analyze the correlation between cancerassociated RNA methylation regulators and HCC malignant features in network ***:We identified two HCC subgroups(cluster 1 and 2),which had clearly distinct clinicopathological,biofunctional and prognostic characteristics,by consensus *** cluster 2 subgroup correlated with malignancy of the primary tumor,higher tumor stage,higher histopathological grade and higher frequency of TP53 mutation,as well as with shorter survival when compared with cluster *** enrichment indicated that the cluster 2 correlated to the tumor malignancy signaling and biological *** on these findings,an 11-gene risk signature was built,which not only was an independent prognostic marker but also had an excellent power to predict the tumor ***:Our study indicated that RNA methylation regulators are vital for HCC malignant progression and provide an important evidence for RNA methylation,methylation regulators are actionable targets for anticancer drug discovery.

关键词： RNA methylation Hepatocellular carcinoma Prognostic marker Epigenetics

Thermal-flow-electric coupling performance analysis of a liquid-immersed battery thermal management system

在线全文

学校读者我要写书评

暂无评论

Science China Technological Sciences 2025年第1期 157-176页

作者： Qiang GAO jun TIAN Chujin BAO Yangfan zhong Chengbin ZHANG Yongping CHEN School of Energy and Environment Southeast University Battery Testing Center China North Vehicle Research Institute Zhejiang Immertech Co. Ltd. Alibaba Cloud Computing Co. Ltd.

Ensuring the safety and performance of lithium-ion batteries(LIBs) is a significant challenge for electric *** tackle this issue, an innovative liquid-immersed battery thermal management system(LIBTMS) using bionic baffles with fish-like perforations is developed. The thermal-flow-electric coupling characteristics of LIBTMSs with different baffle structures(no baffle, conventional baffle, baffle with circular perforations and baffle with fish-like perforations) are systematically investigated using experimental and numerical methods. The results indicate that the forced flow scheme exhibits better thermal management performance and voltage equalization than static flow. Moreover, the LIB temperatures and voltage deviations of different LIBTMSs increase quickly with increasing discharge rates. More importantly, the innovative LIBTMS exhibits the best thermoelectric performance due to its excellent thermoelectric equilibrium behavior caused by high electrical and temperature consistency, as well as the best overall performance involving the balance between the pressure loss and heat transfer capacity of the system. Compared with other structures, the innovative LIBTMS using baffles with fish-like perforations exhibits a maximum reduction of 10.1%, 15.2%, 25.8% and 9.0% in LIB maximum temperature, maximum temperature difference, system pressure drop and voltage deviation, respectively, under the same operating ***, for the LIBTMS using baffles with fish-like perforations, the bottom inlet and top outlet configuration and coolant precooling are suggested to enhance cooling performance.

关键词：

Key issues on magnetic reconnection at Mercury

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Earth and Planetary Physics 2024年第5期8卷 673-685页

作者： jun zhong Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China

Magnetic reconnection processes and their impact on planetary magnetospheric dynamics exhibit significant differences due to differences in upstream solar wind conditions and internal planetary *** understanding of reconnection phenomena at Mercury is rooted in the MESSENGER ***,direct detection of reconnection remains ***,we aim to assess the limitations of MESSENGER in detecting reconnection in Mercury’s space and to discuss key issues of reconnection that will be addressed by BepiColombo,including the dynamics of magnetic flux ropes,particle acceleration,density asymmetric reconnection,IMF-driven near-tail structures,and potential modes of magnetospheric convection.

关键词： magnetic reconnection Mercury MESSENGER BepiColombo

在线全文

学校读者我要写书评

暂无评论

服务器无感知计算系统性能优化技术研究综述

软件学报 2025年第1期36卷 47-78页

作者：杨光刘杰曲慕子王帅叶丹钟华中国科学院大学中国科学院软件研究所软件工程技术研究开发中心计算机科学国家重点实验室(中国科学院软件研究所)

服务器无感知计算是新兴的云计算模式,它基于“函数即服务(FaaS)”的范式,以函数为部署和调度的基本单位,为用户提供大规模并行和自动伸缩的函数执行服务,且无需用户管理底层资源.对于用户,服务器无感知计算能够帮助他们摆脱集群底层基... 详细信息

服务器无感知计算是新兴的云计算模式,它基于“函数即服务(FaaS)”的范式,以函数为部署和调度的基本单位,为用户提供大规模并行和自动伸缩的函数执行服务,且无需用户管理底层资源.对于用户,服务器无感知计算能够帮助他们摆脱集群底层基础设施管理的负担,专注于业务层的开发和创新;对于服务提供商,服务器无感知计算将应用分解为细粒度的函数,极大地提高了调度效率和资源利用率.显著的优势让服务器无感知计算迅速吸引了业界的注意,然而,服务器无感知计算与传统云计算迥然不同的计算模式以及对任务各方面的严格限制给应用的迁移带来了诸多障碍,各种越来越复杂的任务也对服务器无感知计算的性能提出了越来越高的要求,服务器无感知计算的性能优化成为一个重要的研究课题.从4个方面对服务器无感知计算系统性能优化技术的相关研究工作进行梳理和综述,并介绍现有的系统实现.(1)介绍面向典型任务的优化技术,包括任务适配和针对特定任务的系统优化;(2)综述沙箱环境的优化工作,包括沙箱方案和冷启动优化技术,它们是决定函数运行速度的核心;(3)概括I/O和通信技术的优化,它们是服务器无感知计算应用程序的主要性能瓶颈;(4)简述相关的资源调度技术,包括面向平台和面向用户的调度策略,它们决定着系统的资源利用率和任务的执行效率.最后,总结当前服务器无感知计算性能优化技术所面临的问题和挑战,并展望未来可能的发展方向.

关键词：服务器无感知计算函数即服务云函数云计算性能优化