检索结果-南通市图书馆

Journal of Advanced Ceramics 2013年第3期2卷 285-290页

作者： Jong Hyun KIM Jung rag YOON R&D Center Samwha Capacitor Co.Ltd.YonginGyeonggi 449-884R.O.Korea

The electrical characteristics of hybrid super capacitor were evaluated by synthesizing LTO(Li_(4)Ti_(5)O_(12))using TiO_(2) having a hydrogen titanate nanowire *** of the hydrogen titanate nanowire was implemented by using TiO_(2) having size of 60 nm and NaOH,and performing synthesis at 70℃for 6 h with a sonochemical *** compound was synthesized at 150℃for 36 h and at 180℃for 36 h respectively by using the hydrogen titanate nanowire and LiOH·H2O as starting materials with a hydrothermal *** final LTO compound was synthesized at 700℃for 6 h using a solid-state *** a result of manufacturing the hybrid super capacitor using LTO synthesized at 180℃for 36 h with the hydrothermal method,a capacity of 198 mA·h/g has been achieved compared to a theoretical capacity of 172 mA·h/g of existing LTO,and thus,the capacity has been increased by about 13%.Further,such excellent cycle performance has ensured its possibility as a high-capacity capacitor.

关键词： LTO(Li4Ti5O12) lithium titanate oxide hydrogen titanate nanowire hybrid super capacitor

Healthy, natural, efficient and tunable lighting: four-package white LEDs for optimizing the circadian effect, color quality and vision performance

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Light(Science & Applications) 2014年第1期3卷 314-322页

作者： Ji Hye Oh Su Ji Yang Young rag Do Department of Chemistry Kookmin UniversitySeoul 136-702Korea

To date,most current reports on the development and optimization of artificial lighting sources have focused on the energy performance levels and limited color qualities of white light-emitting diodes(LEDs).However,these properties are insufficient in terms of representing all performance levels required when adjusting white LEDs for healthy and smart ***,we introduce essential and advanced figures of merit pertaining to circadian performance as well as vision performance and color *** compare all possible properties of commercialized artificial lighting,daylight and four-package white LEDs which consist of long-wavelength pass dichroic filter(LPDF)-capped,phosphor-converted red,amber and green LEDs(pc-LEDs)and a blue *** show that these tunable four-package white LEDs produce a tunable circadian effect for melatonin suppression/secretion,a high color quality for color perception/reproduction,high efficiency for energy savings and tunable figures of merit for the smart LED lighting market.

关键词： circadian effect color quality solid-state lighting vision performance white LED

Posttraumatic incarceration of medial collateral ligament into knee joint with anterior cruciate ligament injury

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 Traumatology 2015年第6期18卷 367-369页

作者： Sunil Gurpur Kini Karel du pre Warwick Bruce Department of Orthopaedics Concord Repatriation General Hospital Concord West NSW 2128 Australia

Medial collateral ligament of the knee is an important coronal stabiliser and often injured in isolation or as combination of injuries. The article reports a case of incarcerated medial collateral ligament （MCL） injury in combination with anterior cruciate ligament （ACL） injury in 20 year old male who presented to us 4 weeks after injury. Clinical examination and MRI was correlated to complete ACL tear with torn distal MCL and incarceration into the joint. Patient was taken up for ACL hamstring graft reconstruction with mini-arthrotomy and repair of the torn MCL. Patient was followed up with dedicated rehabilitation protocol with good functional results. At one year follow-up, patient exhibited full range of motion with negative Lachman, Pivot shift and valgus stress tests. This article highlights the rare pattern of MCL tear and also reviews the literature on this pattern of injury.

关键词： Medial collateral ligament Knee Anterior cruciate ligament Reconstruction Knee joint

碱激发胶凝材料:早期成核、化学相演变和体系性能（英文）

在线全文

学校读者我要写书评

暂无评论

硅酸盐学报 2015年第10期43卷 1449-1457页

作者： Kwesi SAGOE-CRENTSIL pre De SILVA CSIRO Manufacturing Flagship Victoria Australia School of Science Australian Catholic University North Sydney Australia

近些年,通过碱激发硅铝酸质材料形成聚合物水泥基材料的研究受到了广泛关注。由于在此聚合物胶凝体系中,硅铝质原料存在多样性,包括粉煤灰、矿渣、煅烧高岭石等,因此其原料化学性质在动力学和固相演变过程中起到非常重要的作用,并决定... 详细信息

近些年,通过碱激发硅铝酸质材料形成聚合物水泥基材料的研究受到了广泛关注。由于在此聚合物胶凝体系中,硅铝质原料存在多样性,包括粉煤灰、矿渣、煅烧高岭石等,因此其原料化学性质在动力学和固相演变过程中起到非常重要的作用,并决定了最终产品的化学和物理性质。分析了原料化学组成对从溶解到最终水化产物性能的碱激发全过程的影响。并使用了包括X射线同步衍射分析在内的一系列分析技术对多种原料的无定形和沸石状结构进行了表征。研究了具有特定无定形SiO_2/Al_2O_3比的钠锅硅酸盐沸石在Al_2O_3-SiO_2-H_2O凝胶中的结晶趋势,并基于可识别的三元相图中的组成结构,研究了钙离子和剩余阳离子种类的主要影响。讨论了不同体系的相组成和化学成分、物相转变、微观结构变化及其长期强度发展和耐化学性的关系。

关键词：混凝耐久性模拟服役寿命验证

Sexual audience affects male's reproduction investment without consequences on reproductive outputs

在线全文

学校读者我要写书评

暂无评论

Insect Science 2022年第4期29卷 1170-1180页

作者： Philippe Louâpre Karen Muller Soline Bettencourt-Amarante Denis Thiery Jérôme Moreau UMR CNRS 6282 Biogeosciences UniversitéBourgogne Franche-ComtéDijonFrance INRA UMR 1065 Santéet Agroecologie du Vignoble Institut des Science de la Vigne et du VinVillenave d'OrnonCedexFrance INRA UMR 1065 SaveUniversitéde BordeauxBordeaux Sciences AgroVillenave d'OrnonCedexFrance

Males evolved plastic strategies to respond to male-male competition and exhibit adaptive traits and behaviors maximizing their access to the females and limiting sperm *** behaviors allow males to express quick responses to current sexual audience,that is,the number of nearby conspecifics prone to *** contrast,physiological responses are frequently delayed because they are constrained by the time and resources having to be mobilized to produce and export sperm and associated *** is especially critical in species for which males produce *** we investigated in what extend moth males(the tortricid moth Lobesia botrana)producing spermatophores exhibit plastic behavioral and physiological responses to different sexual audiences before and during mating and the consequences for their reproductive *** found that males adjusted their mating behaviors and spermatophore size to a potentially elevated risk of sperm competition perceived before *** addition,males responded to the closed presence of females during mating by reducing their mating ***,the various behavioral and physiological responses we highlighted here were not fully reflected in their reproductive performance as we did not reveal any effect on fecundity and fertility of their *** selective pressure exerted on males experiencing male-male competition could thus be sufficient to trigger adjustment in male mating behaviors but constrains physiological responses according to the perception of competition.

关键词： Lobesia borrund male-male compeition mating behavior sexual conflict sexual scletion sperm competition

Hepatitis C virus genotypes in Serbia and Montenegro: The prevalence and clinical signifi cance

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 2007年第3期13卷 355-360页

作者： Neda Svirtlih Dragan Delic Jasmina simonovic Djordje Jevtovic Ljubisa Dokic Eleonora Gvozdenovic Ivan Boricic Dragica Terzic Sladjana Pavic Gorana Neskovic Sonja Zerjav Vladimir Urban Institute for Infectious Diseases Clinical Centre of Serbia Belgrade Serbia Institute for Pathology Medical Faculty University of Belgrade Serbia Clinical Centre of Podgorica Montenegro General Hospital Uzice Serbia Institute for Nuclear Sciences Vinca Serbia Medical Faculty University of Belgrade Serbia

AIM： To investigate the prevalence of hepatitis C virus （HCV） genotypes in Serbia and Montenegro and their influence on some clinical characteristics in patients with chronic HCV infection. METHODS： A total of 164 patients was investigated. Complete history, route of infection, assessment of alcohol consumption, an abdominal ultrasound, standard biochemical tests and liver biopsy were done. Gene sequencing of 5＇ NTR type-specific PCR or commercial kits was performed for HCV genotyping and subtyping. The SPSS for Windows （version 10.0） was used for univariate regression analysis with further multivariate analysis. RESULTS： The genotypes 1, 2, 3, 4, 1b3a and 1b4 were present in 57.9%, 3.7%, 23.2%, 6.7%, 6.7% and 1.8% of the patients, respectively. The genotype 1 （mainly the subtype 1b） was found to be independent of age in subjects older than 40 years, high viral load, more severe necro-inflammatory activity, advanced stage of fibrosis, and absence of intravenous drug abuse. The genotype 3a was associated with intravenous drug abuse and the age below 40. Multivariate analysis demonstrated age over 40 and intravenous drug abuse as the positive predictive factors for the genotypes lb and 3a, respectively.CONCLUSION： In Serbia and Montenegro, the genotypes 1b and 3a predominate in patients with chronic HCV infection. The subtype lb is characteristic of older patients, while the genotype 3a is common in drug abusers. Association of the subtype lb with advanced liver disease, higher viral load and histological activity suggests earlier infection with this genotype and eventually its increased pathogenicity.

关键词： Hepatitis C virus Genotypes prevalence Serbia Montenegro

Wireless Mesh Networks and Cooperative Relaying Technologies

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

ZTE Communications 2008年第2期6卷 20-24页

作者： Jiang Xiaokui (Wireless pre- research Department of ZTE Corporation, Xi’an 710065, China )

The Wireless Mesh Network (WMN) has become a focus in research of wireless broadband communications . In a switching technologies - based wireless Mesh network, the entire network is regarded as an IP subnet, so it cannot be applied in situations where large coverage is required . The use of cooperative relaying technologies can improve the transmission rate and reliability of wireless link; while the wireless Mesh network, once integrated with cooperative relaying technologies and routing technologies , can improve its spectrum efficiency and cover a wide area . However, there are many problems to be solved with respect to standardization, key technologies research and industrialization. Therefore , the application of cooperative relaying technologies in wireless Mesh networks is still a great challenge .

关键词： Mesh Wireless Mesh Networks and Cooperative Relaying Technologies WMN

Reliability Strategies for Data Transmission in Wireless Mesh Network

在线全文

学校读者我要写书评

暂无评论

ZTE Communications 2008年第2期6卷 30-33页

作者： Zhao Nan (Wireless pre-research Department of ZTE Corporation, Xi’an 710065, China)

Wireless Mesh Network (WMN) is a new-type wireless network. Its core idea is that any of its wireless equipment can act as both an Access Point (AP) and a router. Each node in the network can send and receive signals as well as directly communicate with one or several peer nodes. One important issue to be considered in wireless Mesh networks is how to secure reliable data transmission in multi-hop links. To solve the problem, the 3GPP system architecture proposes two functionalities: ARQ and HARQ. This paper presents two HARQ schemes, namely hop-by-hop and edge-to-edge, and three ARQ schemes: hop-by-hop, edge-to-edge, and last-hop. Moreover, it proposes three solutions for WMNs from the perspective of protocol stock design: layered cooperative mechanism, relay ARQ mechanism and multi-hop mechanism.

关键词： HARQ WMN Mesh Reliability Strategies for Data Transmission in Wireless Mesh Network

在线全文

学校读者我要写书评

暂无评论

微合金钢低温冲击试验断口形貌的定量研究

国外钢铁钒钛 1991年第1期4卷 48-50页

作者： rag.,KK 黄旭

钨在烷基胺—盐酸和烷基胺—硫酸体系中的溶剂萃取

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

国外稀有金属 1992年第4期 11-18页

作者： Car.,rag 汪剑岭