检索结果-南通市图书馆

Imaging of the anterior cruciate ligament

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 Orthopedics 2011年第8期2卷 75-84页

作者： wing Hung Alex ng James Francis Griffith Esther Hiu yee Hung Bhawan Paunipagar Billy Kan yip Law Patrick Shu Hang yung Department of Imaging and Interventional Radiology Prince of Wales HospitalChinese University of Hong KongHong KongChina Department of Orthopedics and Traumatology Prince of Wales HospitalChinese University of Hong KongHong KongChina

The anterior cruciate ligament(ACL)is an important structure in maintaining the normal biomechanics of the knee and is the most commonly injured knee ***,the oblique course of the ACL within the intercondylar fossa limits the visualization and assessment of the pathology of the *** pictorial essay provides a comprehensive and illustrative review of the anatomy and biomechanics as well as updated information on different modalities of radiological investigation of ACL,particularly magnetic resonance imaging.

关键词： Magnetic resonance Knee Anterior cruciate ligament Tear

New tricyanoiron(Ⅲ) building blocks for the construction of molecule-based magnets

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Chemistry 2010年第10期53卷 2106-2111页

作者： LAU Pui-Ha wOng wing-Tak LAU Tai-Chu Department of Biology and Chemistry City University of Hong Kong Department of Chemistry The University of Hong Kong

A series of tricyanoiron(Ⅲ) complexes with the general formula mer-[FeⅢ(5-Xsap)(CN)3]2-(X = H, Me, MeO, Cl or Br, sapH2 = N-salicylidene-o-aminophenol) have been synthesized. These complexes were characterized by IR, ESI-MS, UV/Vis, elemental analysis and magnetic measurements. The structures of (PPh4)2[FeⅢ(sap)(CN)3] and (PPh4)2[FeⅢ(5-Mesap)(CN)3] have been determined by X-ray crystallography. These low-spin d5 tricyanoiron(Ⅲ) complexes are potential building blocks for the construction of molecule-based magnets.

关键词： cyano iron Schiff base building block molecule-based magnet

Alginate-based complex fibers with the Janus morphology for controlled release of co-delivered drugs

在线全文

学校读者我要写书评

暂无评论

Asian Journal of Pharmaceutical Sciences 2021年第1期16卷 77-85页

作者： wing-Fu Lai Eric Huang Kwok-Ho Lui School of Pharmaceutical Sciences Shenzhen UniversityShenzhen 518060China School of Life and Health Sciences The Chinese University of Hong Kong(Shenzhen)Shenzhen 518172China Department of Applied Biology and Chemical Technology Hong Kong Polytechnic UniversityHong KongChina

Hydrogels are soft materials consisting of a three-dimensional network of polymer *** the years,hydrogels with different compositions have been developed as drug carriers for diverse biomedical applications,ranging from cancer therapy and wound care to the treatment of neurodegenerative and inflammatory *** of these carriers,however,are designed only to deliver single *** based on hydrogels for co-delivery of multiple agents,with the release rate of each of the co-delivered agents tunable,are *** study reports a one-pot method of fabricating alginate-based complex fibers with the Janus morphology,with carboxymethyl cellulose sodium functioning as a polymeric modifier of the properties of each of the fiber *** using malachite green and minocycline hydrochloride as model drugs,the generated fibers demonstrate the capacity of enabling the release profile of each of the co-delivered drugs to be precisely *** with their negligible toxicity and the retention of the activity of the loaded drugs,the complex fibers reported in this study warrant further development and optimization for applications that involve co-delivery of multiple agents.

关键词： Janus morphology Complex fiber Tunable release profiles Co-delivery Controlled release

A Sub-Grid Structure Enhanced Discontinuous Galerkin Method for Multiscale Diffusion and Convection-Diffusion Problems

在线全文

学校读者我要写书评

暂无评论

Communications in Computational Physics 2013年第7期14卷 370-392页

作者： Eric T.Chung wing Tat Leung Department of Mathematics The Chinese University of Hong KongHong Kong

In this paper,we present an efficient computational methodology for diffusion and convection-diffusion problems in highly heterogeneous media as well as convection-dominated diffusion *** is well known that the numerical computation for these problems requires a significant amount of computermemory and ***,the solutions to these problems typically contain a coarse component,which is usually the quantity of interest and can be represented with a small number of degrees of *** are many methods that aim at the computation of the coarse component without resolving the full details of the *** proposed method falls into the framework of interior penalty discontinuous Galerkin method,which is proved to be an effective and accurate class of methods for numerical solutions of partial differential equations.A distinctive feature of our method is that the solution space contains two components,namely a coarse space that gives a polynomial approximation to the coarse component in the traditional way and a multiscale space which contains sub-grid structures of the solution and is essential to the computation of the coarse *** addition,stability of the method is *** numerical results indicate that the method can accurately capture the coarse behavior of the solution for problems in highly heterogeneous media as well as boundary and internal layers for convection-dominated problems.

关键词： Multiscale problem sub-grid capturing multiscale basis function boundary layer internal layer

R-Memcached: A Reliable In-Memory Cache for Big Key-Value Stores

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Tsinghua Science and Technology 2015年第6期20卷 560-573页

作者： Chengjian Liu Kai Ouyang Xiaowen Chu Hai Liu yiu-wing Leung Department of Computer Science Hong Kong Baptist University Institute of Research and Continuing Education Hong Kong Baptist University

Large-scale key-value stores are widely used in many web-based systems to store huge amount of data as(key, value) pairs. In order to reduce the latency of accessing such(key, value) pairs, an in-memory cache system is usually deployed between the front-end web system and the back-end database system. In practice, a cache system may consist of a number of server nodes, and fault tolerance is a critical feature to maintain the latency Service-Level Agreements(SLAs). In this paper, we present the design, implementation, analysis, and evaluation of R-Memcached, a reliable in-memory key-value cache system that is built on top of the popular Memcached software. R-Memcached exploits coding techniques to achieve reliability, and can tolerate up to two node *** experimental results show that R-Memcached can maintain very good latency and throughput performance even during the period of node failures.

关键词： in-memory cache fault tolerance key-value store

THE ANALyTICAL SOLUTION FOR SEDIMENT REACTION AND DIFFUSION EQUATION wITH GENERALIZED INITIAL-BOUNDARy CONDITIONS

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2001年第4期22卷 404-408页

作者： XIOng yue-shan(熊岳山) wai wing-hong(韦永康) Department of Computer Science National University of Science and Technology Changsha 410073 P R China Department of Civil and Structural Engineering The Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong P R China

The sediment reaction and diffusion equation,with generalized initial mid boundary condition is studied. By using Laplace transform and Jordan lemma, an analytical solution is got,,which is an extension of analytical solution provided by Cheng Kwokming James ( only diffusion was considered in analytical solution of Cheng). Some problems arisen in the computation of analytical solution formula are also analysed.

关键词： sediment reaction diffusion analytical solution

Home range establishment and utilization by reintroduced lions(Panthera leo)in a small South African wildlife reserve

在线全文

学校读者我要写书评

暂无评论

Integrative Zoology 2017年第4期12卷 318-332页

作者： Sze-wing yIU Francesca PARRINI Leszek KARCZMARSKI Mark KEITH The Swire Institute of Marine Science School of Biological Sciencesthe University of Hong KongHong Kong SARChina Centre for African Ecology School of AnimalPlant and Environmental SciencesUniversity of the WitwatersrandJohannesburgSouth Africa Centre for wildlife Management Department of Animal and Wildlife SciencesUniversity of PretoriaPretoriaSouth Africa

Understanding of animal spatial behavior is essential for informed management *** southern Africa,reintroduction of lions(Panthera leo)to small reserves(60 separate visits)around the largest dam and along rivers sugge... 详细信息

Understanding of animal spatial behavior is essential for informed management *** southern Africa,reintroduction of lions(Panthera leo)to small reserves(y 2000s,however studies on their ranging behavior in these enclosed systems remain *** applied Time Local Convex Hull(T-LoCoH)methods to study the home range establishment and utilization of 11 lions reintroduced to Dinokeng Game Reserve,South Africa,during 2011 through *** established home ranges close to their release sites and during the following 3 years their home range sizes continued to increase,but in each individual case the size remained smaller than half of the reserve area(ween the core and the entire home range,with higher frequency of visits found in core *** high rates(>60 separate visits)around the largest dam and along rivers suggest the importance of water and its surrounding vegetation in the lions’space utilization *** home range size did not differ with season or sex of the individuals,whereas shifts in locations of home ranges revealed differences in the response of the 2 sexes to territorial conflicts and management *** study shows a dynamic home range utilization pattern and highlights the importance of both fine-scale space use patterns(frequency and duration of visits)and broadscale home range changes in understanding the ranging behavior of reintroduced animals.

关键词： carnivore movement space use T-LoCoH utilization distribution

Fabrication of Microlens Array and Its Application:A Review

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 Mechanical Engineering 2018年第1期31卷 10-18页

作者： wei yuan Li-Hua Li wing-Bun Lee Chang-yuen Chan State Key Laboratory of Ultra-precision Machining Technology Partner Laboratory in the Hong Kong Polytechnic University Shenzhen Branch of State Key Laboratory of Ultra-precision Machining Technology PolyU Shenzhen Research Institute

Microlens arrays are the key component in the next generation of 3D imaging system, for it exhibits some good optical properties such as extremely large field of view angles, low aberration and distortion, high temporal resolution and infinite depth of field. Although many fabrication methods or processes are proposed for manufacturing such precision component, however, those methods still need to be improved. In this review, those fabrication methods are categorized into direct and indirect method and compared in detail. Two main challenges in manufacturing microlens array are identified: how to obtain a microlens array with good uniformity in a large area and how to produce the microlens array on a curved surface? In order to effectively achieve control of the geometry of a microlens,indirect methods involving the use of 3D molds and replication technologies are suggested. Further development of ultraprecision machining technology is needed to reduce the surface fluctuation by considering the dynamics of machine tool in tool path planning. Finally, the challenges and opportunities of manufacturing microlens array in industry and academic research are discussed and several principle conclusions are drawn.

关键词： Microlens array Ultraprecision machining 3D image system MEMS

Optimal investment and consumption with forward preferences and uncertain parameters

在线全文

学校读者我要写书评

暂无评论

Probability, Uncertainty and Quantitative Risk 2024年第1期9卷 65-84页

作者： wing Fung Chong Gechun Liang Marwell Institute for Mathematical Sciences and Department of Actuarial Mathematics and Statistics Heriot-Watt UniversityEdinburgh EH144ASUK Department of Statistics The University of WarwickCoventry CV47ALUK

we introduce and analyze a class of forward performance criteria in incomplete markets in the presence of model *** stems from general investment constraints,while model uncertainty is represented by a convex and compact set of plausible model parameter *** the max-min criteria in traditional(backward)robust control,we formulate similar criteria for the robust forward performance processes and focus on the rich class of time-monotone *** provide a novel PDE characterization and a semi-explicit saddle-point construction of the robust forward performance criteria and their optimal ***,we present additional results within the class of homothetic constant relative risk aversion(CRRA)*** this class,we investigate the relationship between forward performance processes on wealth and those on consumption,establishing an interesting dominance through time.

关键词： Robust forward performance criteria Portfolio constraints Consumption Saddle points Constant relative risk aversion