检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

帕金森病患者坐立速度的可调性

世界核心医学期刊文摘（神经病学分册） 2005年第8期1卷 29-30页

作者： mak M.K.Y. Hui-chan c.w.Y. 高中宝 Dept. of Rehabilitation Sciences Hong Kong Polytechnic UniversityHung Hom Hong Kong

Objective: To evaluate whether Parkinsonian patients could modify the speed of a sit-to-stand (STS) task to the same extent as that of healthy subjects. Met hods: Twenty Parkinsonian patients and 20 control subjects were instructed to st and up at a natural and fast speed. Kinematic data and kinetic data were recorde d. Results: Parkinsonian patients were significantly slower than healthy individ uals during STS at a natural speed. when required to perform STS task at a fast speed,these patients could increase both peak horizontal and vertical velocities of the task, by significantly increasing hip and ankle dorsiflexion torques and the rate of torque production, just as the control subjects did. In fact, no di fference was found for the percentage changes in both peak velocities and moveme nt time between the two groups, though similar between-group differences during STS at a natural speed still existed at a fast speed. conclusions: Parkinsonian patients had problems in generating adequate lower limb joint torques and in th e rate of torque production when performing STS at a natural ***, thes e patients were capable of increasing the speed of their STS with the same perce ntage changes as those of healthy subjects. Significance: The capability of Park insonian patients for increasing movement speed gives new insights to rehabilita tion strategy.

关键词：帕金森病可调性康复治疗健康受试者生成率背屈关节力矩动力学数据

combining Task Scheduling in Power Adaptive Dynamic Reconfigurable System

在线全文

学校读者我要写书评

暂无评论

Journal of Electronic Science and Technology 2012年第4期10卷 296-301页

作者： Hui Dong Le-Tian Huang Jun-Shi wang Terrence mak School of communication and Information Engineering University of Electronic Science and Technology of China Department of computer Science and Engineering The Chinese University of Hong Kong Guangzhou Institute of Advanced Technology Chinese Academy of Sciences

Supplying the electronic equipment by exploiting ambient energy sources is a hot spot. In order to achieve the match between power supply and demands under the variance of environments at real time, a reconfigurable technique is taken. In this paper, a dynamic power consumption model by using a lookup table as a unit is proposed. Then, we establish a system-level task scheduling model according to the task type. Based on single instruction multiple data （SIMD） architecture which contains a processing system and a control system with a Nios II processor, a practical dynamic reconfigurable system is built. The approach is evaluated on a hardware platform. The test results show that the system can automatically adjust the power consumption in case of external energy input changing. The utilization of the system dynamic power of their portion is from 80.05% to 91.75% during the first task assignment. During the entire processing cycle, the total energy efficiency is 97.67%.

关键词： Nios II power adaptive recon-figuration single instruction multiple data (SIMD) taskscheduling model.

在线全文

学校读者我要写书评

暂无评论

PBI:耐热纤维的发展

国外纺织技术（纺织针织服装化纤染整） 2003年第8期 14-15页

作者： c.M.mak 刘晓艳

PBI[聚-2,2-(间苯撑)-5,5′-双苯并咪唑],是一种耐高温、耐化学腐蚀的纤维.最初用于美国NASA开发的降落伞制动装置和阻燃的宇航防护服,近十年来应用日趋广泛.当前PBI主要用于高温过滤织物、热防护服和石棉替代材料.同时,这种聚合物在薄... 详细信息

PBI[聚-2,2-(间苯撑)-5,5′-双苯并咪唑],是一种耐高温、耐化学腐蚀的纤维.最初用于美国NASA开发的降落伞制动装置和阻燃的宇航防护服,近十年来应用日趋广泛.当前PBI主要用于高温过滤织物、热防护服和石棉替代材料.同时,这种聚合物在薄膜、泡沫材料和粘合剂等领域也显示其良好的发展前景.

关键词： PBI纤维耐热纤维物理性能染色混纺织物防火服

Multifuntionally novel anti-neurodegerative dimers:from relieving symptoms to modifying diseases

在线全文

学校读者我要写书评

暂无评论

Multifuntionally novel anti-neurodegerative dimers:from reli...

首届东方药理论坛暨2018年全国心脑血管药理学术会议、上海市药理学会第十九届学术年会

作者： Yifan HAN cui wei Shengquan HU Marvin mak State Key Laboratory of chinese Medicine and Molecular Pharmacology(Incubation) The Hong Kong Polytechnic University Shenzhen Research Institute Department ofApplied Biology and chemical Technology Institute of Modern Chinese MedicineThe Hong Kong Polytechnic University School of medicine Ningbo University

Neurodegenative disorders(ND),including Alzheimer's disease,Vascular Dementia and Parkinson's disease have now become the most common brain disorders among the older *** there are many similarities among ND from molecular to systemic,such as late-onset,atypical protein assemblies,and induced cell death,the precise pathogenesis remains largely *** a result,the currently existing therapeutics only offer temporary symptomatic ***,further research and development of more efficacious and disease-modifying agents for the prevention,treatment and restoration of ND will have tremendous value from both scientific,and economic *** the past few years,our series of studies have identified several highly promising anti-neurodegerative dimeric leads,with disease-modifying *** this presentation,the latest progress on the multifunctionally neuroprotective and disease modifying effects and the underlying mechanisms of those candidates will be comprehensively illustrated and discussed.

关键词： Neuroprotective effect Alzheimer's disease Disease modifying Multiple functions

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

外延ScNN电光薄膜生长及研究

外延SCNN电光薄膜生长及研究

Novel anti-AD dimeric leads:from relieving symptoms to modifying diseases via multi-targets

第五届中国功能材料及其应用学术会议

作者：张日理陶科玉蒋志洁 mak c L w0NG w H cH0Y c L 中山大学光电材料与技术国家重点实验室物理系香港理工大学应用物理系和材料研究中心

用激光脉冲沉积(PLD)法在MgO(001)衬底上成功地生长、制备出了外延铌酸锶钡钠(ScNN)电光薄膜。对生长制备出的ScNN电光薄膜用X射线衍射对其微观结构进行了测量研究:X射线衍射结果显示:生长在MgO(001)衬底上的ScNN电光薄膜是外延膜;对生... 详细信息

用激光脉冲沉积(PLD)法在MgO(001)衬底上成功地生长、制备出了外延铌酸锶钡钠(ScNN)电光薄膜。对生长制备出的ScNN电光薄膜用X射线衍射对其微观结构进行了测量研究:X射线衍射结果显示:生长在MgO(001)衬底上的ScNN电光薄膜是外延膜;对生长在MgO(001)衬底上的外延ScNN电光薄膜在200-900nm光谱范围的透射光谱进行了测量研究,通过对薄膜透射光谱的振荡曲线分析计算得到了ScNN电光薄膜的光学常数,结果发现外延ScNN电光薄膜的折射率符合单电子模型.

关键词： ScNN薄膜 PLD

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

Novel anti-AD dimeric leads:from relieving symptoms to modif...

Proto Kranz-like leaf traits and cellular ionic regulation are associated with salinity tolerance in a halophytic wild rice

2019全国老年痴呆与认知障碍相关疾病学术大会

作者： HAN Yi-fan HU Sheng-quan Marvin mak wANG Jia-jun State Key Laboratory of chinese Medicine and Molecular Pharmacology (Incubation) The Hong Kong Polytechnic University Shenzhen Research Institute Department of Applied Biology and chemical Technology Institute of Modern Chinese MedicineThe Hong Kong Polytechnic University

Alzheimer disease(AD) has now become the most common brain disorder among the older *** addition,the currently existing therapeutics only offer temporary symptomatic ***,further research and development of more efficacious and disease-modifying agents for the prevention,treatment and restoration of AD will have tremendous value from both scientific,and economic *** the past few years,our series of studies have identified several highly promising anti-AD dimeric leads,with disease-modifying *** this presentation,the latest progress on the neuroprotective and disease modifying effects and the underlying mechanisms of those candidates will be comprehensively illustrated and discussed.

关键词： Alzheimer disease dimeric leads multi-targets relieving symptoms modifying diseases

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

Stress Biology 2022年第1期2卷 587-605页

作者： Miing-Tiem Yong celymar Angela Solis Samuel Amatoury Gothandapani Sellamuthu Raja Rajakani Michelle mak Gayatri Venkataraman Lana Shabala Meixue Zhou Oula Ghannoum Paul Holford Samsul Huda Sergey Shabala Zhong-Hua chen School of Science Western Sydney UniversityPenrithNSW 2751Australia Tasmanian Institute of Agriculture College of Science and EngineeringUniversity of TasmaniaHobartTasmania 7001Australia Plant Molecular Biology Laboratory M.S.Swaminathan Research FoundationIII Cross StreetTaramani Institutional Area-600113ChennaiIndia Hawkesbury Institute for the Environment Western Sydney UniversityPenrithNSW 2751Australia International Research centre for Environmental Membrane Biology Foshan UniversityFoshan 528000China

Species of wild rice(Oryza spp.)possess a wide range of stress tolerance traits that can be potentially utilized in breeding climate-resilient cultivated rice cultivars(Oryza sativa)thereby aiding global food *** this study,we conducted a greenhouse trial to evaluate the salinity tolerance of six wild rice species,one cultivated rice cultivar(IR64)and one landrace(Pokkali)using a range of electrophysiological,imaging,and whole-plant physiological *** wild species(***,*** and ***)were found to possess superior salinity stress *** underlying mechanisms,however,were strikingly ***+accumulation in leaves of ***,*** and *** were significantly higher than the tolerant landrace,***+accumulation in mesophyll cells was only observed in ***,suggesting that *** and *** avoid Na+accumulation in mesophyll by allocating Na+to other parts of the *** finding also suggests that *** might be able to employ Na+as osmolyte without affecting its *** study of Na+allocation in leaves will be helpful to understand the mechanisms of Na+accumulation in these *** addition,*** showed Proto Kranz-like leaf anatomy(enlarged bundle sheath cells and lower numbers of mesophyll cells),and higher expression of c4-related genes(e.g.,NADPME,PPDK)and was a clear outlier with respect to salinity tolerance among the studied wild and cultivated Oryza *** unique phylogenetic relationship of *** with c4 grasses suggests the potential of this species for breeding rice with high photosynthetic rate under salinity stress in the future.

关键词： Gas exchange Gene expression Ion flux Na+imaging Oryza sativa Oryza coarctata

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

EGF转基因鼠研究的展望

生物化学与生物物理学报 2001年第5期33卷 473-476页

作者：黄颍泉董铭麦经纶陈小圆东京大学医学部研究生院解剖和细胞生物学系!东京01130033 日本香港大学Queen Mary医院儿科系!香港中国

通过基因工程这一有力的工具 ,改变了信号转导级联反应中从配体本身开始 ,通过特异受体到达下游的单个或一组基因 ,来研究信号转导的特殊性、互补性及重复性 ,已得到了大量关于肿瘤基因和生长因子的信息。转基因鼠和含有改变基因的鼠系... 详细信息

通过基因工程这一有力的工具 ,改变了信号转导级联反应中从配体本身开始 ,通过特异受体到达下游的单个或一组基因 ,来研究信号转导的特殊性、互补性及重复性 ,已得到了大量关于肿瘤基因和生长因子的信息。转基因鼠和含有改变基因的鼠系被广泛应用于有关上皮生长因子受体 (EGFR)及其配体 ,胰岛素样生长因子(IGF)受体及其结合蛋白的研究。综述了近年来EGF和IGF I/胰岛素样生长因子结合蛋白 (IGFBP)转基因鼠模型的主要进展 ,同时基于现有的转基因模型 ,概述了活体中EGF和IGFBP的最新研究成果 ,重点在于通过各种转基因及基因剔除模型的使用 ,研究EGF和IGF在生殖、生长和发育中的调节作用

关键词：上皮生长因子受体胰岛素样生长因子结合蛋白胰岛素样生长因子转基因鼠过量表达

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

还原热解催化合成金刚石新法

化学进展 1998年第4期10卷 460-460页

作者：李亚栋钱逸泰中国科学技术大学结构研究实验室及化学系

ＳｙｎｔｈｅｔｉｃＤｉａｍｏｎｄｆｒｏｍａＮｏｖｅｌＲｅｄｕｃｔｉｏｎ┐Ｐｙｒｏｌｙｓｉｓ┐ＣａｔａｌｙｓｔＲｏｕｔｅ１．论文名称ＡＲｅｄｕｃｔｉｏｎ－Ｐｙｒｏｌｙｓｉｓ－ＣａｔａｌｙｓｔＳｙｎｔｈｅｓｉｓｏｆＤｉａ... 详细信息

ＳｙｎｔｈｅｔｉｃＤｉａｍｏｎｄｆｒｏｍａＮｏｖｅｌＲｅｄｕｃｔｉｏｎ┐Ｐｙｒｏｌｙｓｉｓ┐ＣａｔａｌｙｓｔＲｏｕｔｅ１．论文名称ＡＲｅｄｕｃｔｉｏｎ－Ｐｙｒｏｌｙｓｉｓ－ＣａｔａｌｙｓｔＳｙｎｔｈｅｓｉｓｏｆＤｉａｍｏｎｄ２．发表刊物Ｓｃｉｅｎｃｅ...

关键词：金刚石合成还原热解催化四氯化碳 wurtz反应