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高强度铝合金7075的温成形性能(英文) 被引量:28
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作者 王辉 罗应兵 +2 位作者 peter friedman 陈明和 高霖 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2012年第1期1-7,共7页
对铝合金板料7075在加热状态下的成形性能进行研究。首先,通过单向拉伸试验得到不同温度以及不同应变速率下的应力—应变关系。然后,通过极限拉伸比(LDR)试验和极限拱顶高(LDH)试验对其在不同温度下的拉伸性能和胀形性能进行研究。... 对铝合金板料7075在加热状态下的成形性能进行研究。首先,通过单向拉伸试验得到不同温度以及不同应变速率下的应力—应变关系。然后,通过极限拉伸比(LDR)试验和极限拱顶高(LDH)试验对其在不同温度下的拉伸性能和胀形性能进行研究。最后,对不同温度下成形后材料的力学性能进行研究。结果表明:7075铝合金的拉伸和胀形性能在140~220°C均得到较大提升;当温度高于260°C时,由于成形温度对板料热处理状态的影响,成形性能和成形后材料的力学性能均出现下降趋势。 展开更多
关键词 铝合金7075 温成形 极限拉伸比 极限拱顶高
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Systems biology approach to developing S^2RM-based “systems therapeutics” and naturally induced pluripotent stem cells
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作者 Greg Maguire peter friedman 《World Journal of Stem Cells》 SCIE CAS 2015年第4期745-756,共12页
The degree to, and the mechanisms through, which stem cells are able to build, maintain, and heal the body have only recently begun to be understood. Much of the stem cell's power resides in the release of a multi... The degree to, and the mechanisms through, which stem cells are able to build, maintain, and heal the body have only recently begun to be understood. Much of the stem cell's power resides in the release of a multitude of molecules, called stem cell released molecules(SRM). A fundamentally new type of therapeutic, namely "systems therapeutic", can be realized by reverse engineering the mechanisms of the SRM processes. Recent data demonstrates that the composition of the SRM is different for each type of stem cell, as well as for different states of each cell type. Although systemsbiology has been successfully used to analyze multiple pathways, the approach is often used to develop a small molecule interacting at only one pathway in the system. A new model is emerging in biology where systems biology is used to develop a new technology acting at multiple pathways called "systems therapeutics". A natural set of healing pathways in the human that uses SRM is instructive and of practical use in developing systems therapeutics. Endogenous SRM processes in the human body use a combination of SRM from two or more stem cell types, designated as S2 RM, doing so under various state dependent conditions for each cell type. Here we describe our approach in using statedependent SRM from two or more stem cell types, S2 RM technology, to develop a new class of therapeutics called "systems therapeutics." Given the ubiquitous and powerful nature of innate S2RM-based healing in the human body, this "systems therapeutic" approach using S2 RM technology will be important for the development of anti-cancer therapeutics, antimicrobials, wound care products and procedures, and a number of other therapeutics for many indications. 展开更多
关键词 Stem cell PARACRINE Growth factors PLURIPOTENCY WOUND HEALING Cancer
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