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本文概述了2101船用铝合金的力学性能,疲劳性能,可焊性能,耐蚀性能、复合性能,冷、热加工成型性能等应用性能。研究试验表明:该合金具有较高的母材和焊接接头强度及良好的综合性能。 相似文献
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研究渗流铸造泡沫铝合金的性能特点,自行设计测试方法和制造测试装置,测试了泡沫铝合金的力学性能、流体透过性能、声学性能、热传导性能和阻尼性能.认为泡沫铝的力学性能和热传导性能较实体材料低,具有良好的透过性能、消声性能和阻尼效果,这是泡沫铝用作功能材料的基础. 相似文献
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谈谈塑料包装薄膜(BOPET)的性能与检测 总被引:1,自引:0,他引:1
本文主要介绍了塑料包装薄膜(BOPET)的各项性能指标,包括外观与尺寸和内在性能——物理机械性能、光学性能、热性能、表面性能和阻隔性能的含义与具体指标,以及各种性能的测试方法。 相似文献
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通过试验对降膜式蒸发器用高效传热管的换热性能进行研究,并将其与之相对应的池沸腾换热性能进行比较.由比较数据可知:样管池沸腾换热性能均随热流密度的增大而增强,降膜蒸发性能在一定热流密度下随喷淋流量的增大而增强;在恒定热流密度和恒定喷淋流量下,光管降膜燕发性能低于池沸腾性能,强化管降膜蒸发性能高于池沸腾性能;池沸腾性能高的强化管降膜蒸发性能也强. 相似文献
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本文主要研究了石粉对水泥-矿粉混凝土的工作性、抗压强度、耐久性能(抗渗性能、抗碳化性能和抗冻性能)的影响,并利用孔结构微观分析对其进行了机理分析。研究表明:石粉应用于水泥-矿粉混凝土中,不仅可改善混凝土的工作性能,而且可提高混凝土的抗压强度,对混凝土的耐久性能(抗渗性能、抗碳化性能和抗冻性能)影响不大。 相似文献
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本文通过我国光致照相技术的发展和研究浅析,阐明该技术目前所取得的成就和存在的不足,以促进光致发光照相新技术的推广应用和深入研究。 相似文献
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间接蒸发冷却技术的应用研究与现状 总被引:5,自引:0,他引:5
由于我国各地区气候条件不同,蒸发冷却的应用方式也有些不同.通过对直接蒸发冷却和间接蒸发冷却技术原理的分析,本文提供了分析研究的结果.文章着重介绍了间接蒸发冷却技术在我国的应用研究与现状. 相似文献
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文章简要介绍了我国核农学在诱变育种、核素示踪技术应用、食品辐照和辐射不育技术防治害虫等方面的研究成果和目前存在的主要问题,以及解决问题途径的思考与建议.文章认为我国的核农学正处在能否继续深入发展的关键时期,迫切需要通过加强学术创新和机制创新来提升我国核农学的发展速度与研究水平.文章强调我国核农学开展学术创新的重点应该是加强基础研究与应用基础研究,而支撑这个创新的关键点在于管理机制的创新. 相似文献
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国外火工品防殉爆技术现状分析 总被引:1,自引:0,他引:1
目的跟踪国外火工品殉爆材料技术和防殉爆技术的研究现状,为弹药、火炸药等火工品防护技术的改进,从技术手段上防范以及杜绝火工品爆炸事故的发生提供先进的国外技术情报支撑,为今后的研究方向提供理论参考。方法查阅近年来国外有关防殉爆技术的相关文献,并进行整理分析以及总结。重点介绍火工品的材料技术和防殉爆技术的研究现状,分析应用实例中可能的解决办法。结论研究成果可为防殉爆技术改进、实现低成本化的防殉爆设计提供参考和理论指导。 相似文献
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There is an increasing need both to understand the translation of biomedical research into improved healthcare and to assess the range of wider impacts from health research such as improved health policies, health practices and healthcare. Conducting such assessments is complex and new methods are being sought. Our new approach involves several steps. First, we developed a qualitative citation analysis technique to apply to biomedical research in order to assess the contribution that individual papers made to further research. Second, using this method, we then proposed to trace the citations to the original research through a series of generations of citing papers. Third, we aimed eventually to assess the wider impacts of the various generations. This article describes our comprehensive literature search to inform the new technique. We searched various databases, specific bibliometrics journals and the bibliographies of key papers. After excluding irrelevant papers we reviewed those remaining for either general or specific details that could inform development of our new technique. Various characteristics of citations were identified that had been found to predict their importance to the citing paper including the citation??s location; number of citation occasions and whether the author(s) of the cited paper were named within the citing paper. We combined these objective characteristics with subjective approaches also identified from the literature search to develop a citation categorisation technique that would allow us to achieve the first of the steps above, i.e., being able routinely to assess the contribution that individual papers make to further research. 相似文献
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Life cycle cost technique is a powerful tool to make a scientific decision and a useful method of advancing the continuable development of the society.In this paper,development course,application actuality and up-to-date research trends of life cycle cost technique in China are summarized.Some suggestions are given on how to generalize the application of life cycle cost technique,which are used as the reference to study life cycle cost technique. 相似文献
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Thomas PJ Zoueshtiagh F 《Philosophical transactions. Series A, Mathematical, physical, and engineering sciences》2005,363(1832):1663-1676
A review of our research investigating a new pattern formation process in granular material underlying a rotating fluid is given. The purpose of this summary is to introduce the phenomenon to the geophysical research community and to draw attention to the potential practical benefits of our new experimental method. To this end, the applied and scientific advantages of the technique over traditional studies employing, for instance, water channels, are discussed for the first time. It is shown here that the system rotation in our new technique does not appear to affect the scaling law expressing the dependence of the ripple-pattern wavelength on the governing independent experimental parameters. This suggests that it may become possible to extrapolate appropriate results from rotating to non-rotating systems and, hence, to geophysical environments. Consequently, our new technique may find applications in the context of geophysical research on the formation of sedimentary granular ripple structures. 相似文献