检索结果-南通市图书馆

Compressive behavior and energy absorption of metal porous polymer composite with interpenetrating network structure

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 2006年第B2期16卷 439-443页

作者： LIU yu gong Xiao-lu Institut Charles Delaunay CNRS FRE 2848 LASMIS UTT 12 rue Marie Curie BP 2060 10010 Troyes France

Interpenetrating phase composites (IPCs) are a new class of composite materials with improved combinations of mechanical and physical properties. This study was performed on a new type of IPC called metal porous polymer composite (MPPC) with an interpenetrating network structure. Aluminum-polypropylene (AI-PE) and Aluminum-epoxy resin (Al-Ep) composites were produced by infiltrating the polymer in the aluminum foam. The composite microstructures were characterized using SEM observation. The compressive behavior and energy absorption characteristics of MPPC were investigated and compared with the aluminum foams. The compressive modulus of composite was compared with the VOIGT-REUSS bounds and HASHIN-SHTRIKMAN (H-S) bounds models. The experimental modulus of compressive tests falls well within the theoretical models.

关键词：金属多孔聚合物复合物互穿网络结构压缩行为能量吸收 MPPC复合物

Solid-state batteries: from fundamental interface characterization to realize sustainable promise

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Rare Metals 2020年第7期39卷 743-744页

作者： yu-Xin gong Jia-Jun Wang MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China

The highly conductive solid-state electrolytes (SSEs) have led to great progress in the development of all-solid-state batteries (ASSBs);however, there are obstacles to their application such as poor interfacial stability, scalability challenges, production safety and sustainability of ASSBs which still demand prompt solution. In Nature Nanotechnology, Tan and colleagues summarize solutions to overcome some major fundamental obstacles faced by the ASSB community。

关键词： state fundamental prompt

Charged ultrafine particle filtration through vehicular cabin air filters

在线全文

学校读者我要写书评

暂无评论

Particuology 2016年第5期14卷 1-5页

作者： Bin Xu yu gong Ya Wu Department of Environmental Engineering Tongji University 1239 Siping Road Shanghai 200092 China Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3) Shanghai 200433 China

Understanding the effectiveness of cabin air filters is important for assessing human exposure to ultra- fine particles （UFPs） of vehicular origin. The filtration efficiency of vehicular UFPs with electric charges was investigated for different electric charge characteristics （charge state, charge polarity）. The average filtration efficiency increased ~10% as the electric charge state on the particles changed in distribution from lightly charged to highly charged. The enhancement of filtration efficiency due to electric charge was different at various filter-face air velocities. As electric charges increased, the filtration efficiency increased 12% and 9% at low air velocity （0.1 m/s） and high air velocity （0.S m/s）, respectively. The filter fiber material poses somewhat effect on the filtration efficiency change due to the electric charge. The effects of filter usage and charge polarity on filtration efficiency due to the electric charge were negligi- ble. A coefficient was empirically derived and successfully accounts for the electric charge effect on UFP filtratinn efficiency.

关键词： Particle filtration Electric charge Filtration efficiency Vehicular particle

Calcineurin inhibitors-related posterior reversible encephalopathy syndrome in liver transplant recipients: Three case reports and review of literature

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 Hepatology 2024年第9期16卷 1297-1307页

作者： yu gong Department of Intensive Care Unit Fudan University Affiliated Zhongshan HospitalShanghai 200032China

BACKGROUND Posterior reversible encephalopathy syndrome(PRES),characterized by acute neurological deterioration and extensive white matter lesions on T2-fluid attenuated inversion recovery magnetic resonance imaging(MRI),is increasingly associated with calcineurin inhibitors(CNI)-related *** diagnosis is crucial,as early intervention,including the modification or discontinuation of CNI therapy,strict blood pressure management,corticosteroid treatment,and supportive care can significantly improve patient outcomes and *** growing clinical recognition of CNI-related PRES underscores the importance of identifying and managing this condition in patients presenting with acute neurological *** SUMMARY This report describes three cases of liver transplant recipients who developed *** first case involves a 60-year-old woman who experienced seizures,aphasia,and hemiplegia on postoperative day(POD)9,with MRI revealing ischemic foci followed by extensive white matter *** replacing tacrolimus,her symptoms improved,and no significant MRI abnormalities were observed after three years of *** second case concerns a 54-year-old woman with autoimmune hepatitis who developed headaches,seizures,and extensive white matter demyelination on MRI on *** the switch to rapamycin and the initiation of corticosteroids,her symptoms resolved,and she was discharged on *** third case details a 60-year-old woman with hepatocellular carcinoma who developed PRES,evidenced by brain MRI abnormal-ities on *** to rapamycin and corticosteroid therapy led to her full recovery,and she was discharged on *** cases highlight the critical importance of early diagnosis,CNI modification,and stringent management in improving outcomes for liver transplant recipients with CNI related *** Clinical manifestations,combined with characteristic MRI findings,are crucial in diagnosing PRES among organ transplan

关键词： Posterior reversible encephalopathy syndrome Calcineurin inhibitors Liver transplantation Prognosis Case report

Parameter studies and evaluation principles of delamination damage in laminated composites

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 Aeronautics 2021年第7期34卷 62-72页

作者： Kangkang WANG Libin ZHAO Haiming HONG Jianyu ZHANG yu gong School of Astronautics Beihang UniversityBeijing 100083China Shenyang Aircraft Design and Research Institute Shenyang 110035China College of Aerospace Engineering Chongqing UniversityChongqing 400044China

Delamination represents one of the most severe failure modes in composite laminates,especially when they are subjected to uniaxial compression *** evaluation of the delamination damage has always been an essential issue of composite laminates for durability and damage tolerance in engineering *** on the most typical and representative elliptical delamination issue,an analytical model simultaneously considering the conservative buckling process and non-conservative delamination propagation process is *** computational cases considering different delamination depths,directions,aspect ratios,and areas are established,and the predicted results based on the analytical model are carefully *** of these geometrical delamination parameters on the buckling,delamination propagation,and failure behaviors of composite laminates are thoroughly analyzed,and innovative evaluation principles of the delamination damage have been *** is found that the delamination area is the key factor that truly affecting the failure behaviors of delaminated composites,and the local/global buckling and failure loads show clear linearity with the delamination area,whilst the delamination depth and direction only have slight effects.

关键词： Analytical model Composite Delamination Evaluation principles Parameter study

DSN-BR-Based Online Inspection Method and Application for Surface Defects of Pharmaceutical Products in Aluminum-Plastic Blister Packages

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Mechanical Engineering 2024年第4期37卷 194-214页

作者： Mingzhou Liu yu gong Xiaoqiao Wang Conghu Liu Jing Hu School of Mechanical Engineering Hefei University of TechnologyHefei 230009China School of Mechanical and Electronic Engineering Suzhou UniversitySuzhou 234000China

Ensuring high product quality is of paramount importance in pharmaceutical drug manufacturing,as it is subject to rigorous regulatory *** study presents a research focused on the development of an on-line detection method and system for identifying surface defects in pharmaceutical products packaged in aluminum-plastic ***,the aluminum-plastic blister packages exhibit multi-scale features and inter-class *** address this,the deep semantic network with boundary refinement(DSN-BR)model is proposed,which leverages semantic segmentation domain knowledge,to accurately segment the defects in pixel ***,a specialized image acquisition module that minimizes the impact of ambient light is established,ensuring high-quality image ***,the image acquisition module,image detection module,and data management module are designed to construct a comprehensive online surface defect detection *** validate the effectiveness of our approach,we employ a real dataset for instance verification on the implemented *** experimental results substantiate the outstanding performance of the DSN-BR,achieving the mean intersection over union(MIoU)of 90.5%.Furthermore,the proposed system achieves an inference speed of up to 14.12 f/s,while attaining an F1-Score of 98.25%.These results demonstrate that the system meets the actual needs of the enterprise and provides theoretical and methodological support for intelligent inspection of product surface *** standardizing the control process of pharmaceutical manufacturing and improving the management capability of the manufacturing process,our approach holds significant market application prospects.

关键词： Surface defect detection system Deep learning Semantic segmentation Aluminum-plastic blister packages identification

Thermal cracking of aviation kerosene for scramjet applications

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2009年第9期52卷 2644-2652页

作者： ZHONG FengQuan FAN XueJun yu gong LI JianGuo Key Laboratory of High Temperature Gas Dynamics(LHD) Institute of MechanicsChinese Academy of SciencesBeijing 100190China

Thermal cracking of China No.3 aviation kerosene was studied experimentally and analytically under supercritical conditions relevant to regenerative cooling system for Mach-6 scramjet applications. A two-stage heated tube system with cracked products collection/analysis was used and it can achieve a fuel temperature range of 700―1100 K,a pressure range of 3.5―4.5 MPa and a residence time of ap-proximately 0.5―1.3 s. Compositions of the cracked gaseous products and mass flow rate of the kerosene flow at varied temperatures and pressures were obtained experimentally. A one-step lumped model was developed with the cracked mixtures grouped into three categories:unreacted kerosene,gaseous products and residuals including liquid products and carbon deposits. Based on the model,fuel conversion on the mass basis,the reaction rate and the residence time were estimated as functions of temperature. Meanwhile,a sonic nozzle was used for the control of the mass flow rate of the cracked kerosene,and correlation of the mass flow rate gives a good agreement with the measurements.

关键词： thermal cracking aviation kerosene lumped model scramjet applications

Photoproduction of Large Transverse Momentum Dimuonium (μ^(+)μ^(−)) in Relativistic Heavy Ion Collisions

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2013年第1期30卷 48-51页

作者： yu gong-Ming LI yun-De Department of Physics Yunnan UniversityKunming 650091

The photoproduction processes of large transverse momentum(pT)dimuonium(μ^(+)μ^(-))in AA collisions is *** argue that the modification of electromagnetic radiation processes at large transverse momentum(p_(T)>2 GeV).Through perturbative quantum chromodynamics(pQCD)calculation,we determine the electromagnetic production cross section of large transverse momentum dimuonium(μ^(+)μ^(-))in quark-gluon plasma(QGP)at RHIC and *** numerical results indicate that the contribution of photoproduction processes of dimuonium is evident in relativistic heavy ion collisions at RHIC energies and LHC energies.

关键词： momentum transverse quark

Dynamic subsidence basins in coal mines based on rock mass rheological theory

在线全文

学校读者我要写书评

暂无评论

Mining Science and Technology 2011年第3期21卷 333-335页

作者： Yang yu gong Zhiqiang Liang Bing School of Civil Engineering and Transportation Liaoning Technical University Fuxin 123000 China

In order to investigate the surface deformation caused by coal mining and to reduce environmental damage, more accurate information of dynamic subsidence basins, caused by coal mining, is needed. Based on theological theory, we discuss surface deformation mechanism of dynamic subsidence on the assumption that both the roof and the coal seam are visco-elastic media, put forward the idea that the principle of surface deformation is similar to that of roofs, except for their parameters. Therefore, a surface deforma- tion equation can be obtained, given the equation of the roof deformation *** using a HIM rhe- ological model. In the end, we apply the equation of surface deformation as a practical subsidence prediction in a coal mine. Given the theologic properties of a rock mass, the results of our research of a dynamic subsidence basin can predict the development of surface deformation as a function of time, which is more important than the ultimate subsidence itself. The results indicate that using rheological theory to calculate the deformation of a dynamic subsidence basin is suitable and provides some reference for surface deformation of dynamic subsidence basins.

关键词： Coal mining subsidenceDynamic basinRheological theorie sHiM theological model