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Abstract: Physical activity has been defined as any bodily movement produced by skeletal muscles that results in energy expenditure.It is strongly endorsed as a means of staying healthy and an important avenue for social contact.Although in Australia,some
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文摘:身体活动指由骨骼肌产生的体能消耗运动,是保持身体健康、增进社会交往的重要方式和途径.在澳大利亚,虽然有研究调查民族群体身体活动的各个层面,但总体而言,多数研究更侧重于民族群体的同质性,而忽视了其异质性.本研究探讨在新南威尔士州居住的澳籍香港老年华人对身体活动的概念理解及对身体活动的态度.研究使用开放性问卷进行个体深度访谈,受访者22人.研究发现,大多数受访者不清楚身体活动这一术语的含义,对他们来说,身体活动是一个模糊的、复杂的术语.该群体对身体活动的态度反映了他们在预防性卫生保健方面的文化和健康观念 |
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Abstract: Physical culture in Folklore is a new interdisciplinal attempt between folklore and physical culture, which has great significance to related disciplines and reality.
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体育民俗学是民俗学和体育学科交叉研究的新尝试，它的建立具有重要的学科意义和现实意义。 |
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Abstract: Physical model and research development of scratch test are reviewed in this paper.The physical relationship between critical load Lc measured by scratch test,shear strength and adhesion energy exists.The critical load Lc can be used to characte
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文摘:本文总结了划痕试验法的物理模型及研究现状，临界载荷与涂层和基体之间的界面剪切强度和附着功有物理关系，临界载荷能够表征涂层与基体的结合力。 |
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Abstract: Plenty of the laser processing technique application instances in automobile manufacture show that laser process technique has the advantages of high machining quality ,reliability, security and efficiency, and obviously low cost.
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文摘:通过在汽车制造中采用激光加工技术的大量应用实例，说明激光加工技术不仅能保证汽车的加工质量，且加工可靠安全，使制造效率提高，显著降低了制造成本。 |
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Abstract: Policy problems are a sort of social problems o r public problems whic h are reported through certain channels to relative decision-making departme nts and become the objects studied by decision makers and analyzed by analyzers.
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文摘:政策问题就是经过一定的渠道反映到有关决策部门，成为决策者研究和分析人员分析对象的社会问题或公共问题。 |
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Abstract: Polyphenylacetylenes were synthesized by ［Rn(nbd)Cl］2 and WCl6/Ph4Sn catalyst systems in N2 at room temperature.Polymers with high yield and high molecular weight were obtained.Their structures were characterized by UV,IR,NMR and GPC,respectivel
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文摘:使用有机金属铑、金属钨/四苯基锡催化剂体系聚合苯乙炔，分别获得了高产率和高分子量的聚苯乙炔.使用UV，IR，NMR，GPC等分别对聚合物结构进行了表征.采用不同波长的激发光对聚合物荧光性能进行研究，详细分析了聚合物结构与荧光性能之间的关系.研究结果发现，不同聚合物结构对聚合物荧光性能产生很大影响，规整性高的聚合物，将有较高的发光量子效率；聚合物规整性差，将可能导致多个荧光发光结构点，其荧光强度降低.聚合物荧光光谱研究将对某些共轭聚合物结构的规整性分析提供一些有用的信息. |
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Abstract: Portasystemic shunts is a very important Pathophysiologic Changes in portal hypertensive patients, The measurement of portasystemic shunts is important to choose a decent operation pattern, determine the diameter of TIPSS stents, prevent post-op
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文摘:肝外门-体分流是门脉高压症形成过程中最为重要的病理生理现象，测定肝外门-体静脉分流量，对治疗门脉高压症手术方式选择、决定手术分流道的大小、防治肝性脑病以及判断患者预后均有重要的指导意义。 |
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Abstract: Positron spectroscopy is a new and sensitive microanalytical probe for characterization of polymer microstructures.We report recent advances in this area,including studies on the free volume properties,structural transition,miscibility of blendi
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文摘:简要介绍了近年来正电子谱学在聚合物微结构研究中的主要应用及进展.大量实验事实表明，正电子谱学是表征高聚物微结构的极灵敏方法. |
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Abstract: Poverty in America has grown persistently throughout the twentieth century.
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摘要：美国的贫困现象在整个20世纪持续增长。 |
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Abstract: Power quality and its monitoring technique is the important research area in electrical engineering nowadays.
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摘要:电能质量监测是当前电工领域的研究热点。 |
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Abstract: Precast floorslabs are widely used in residential buildi ngs in order to quicken the progress of construction.Yet some quality problems accoringly arise,one of which is the fissure along the splice of the precast floor slab.This essay analyses t
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文摘:在住宅的设计与建设中大量采用预制楼板结构，虽然加快了施工进度，但也出现了一些问题，预制楼板板缝方向产生裂缝就是其中之一，本文对其原因进行了分析，并提出了有效的防治措施. |
