The appearance of lower hardness at the surface than at the core after through-hardening of steels is known as"inverse quench-hardening." Pioneering work was pe
Two hard, carbon-based solid lubricant coatings, Graphit-iCTM and Dymon-iCTM, have been developed that offer considerable benefits for industry. Both of these n
The compound bioceramic coating containing calcium (Ca) and phosphorus (P) on titanium alloy substrate was prepared by means of micro-arc oxidation (MAO) treatm
The transformation behavior of a 40Cr2Ni2MoV cast steel manufactured by electroslag remelting (ESR) has been investigated. Compared to a forged steel, the incub
The surface mechanical attrition treatment (SMAT) technique was developed to synthesize a nanocrystalline (NC)layer on the surface of metallic materials for upg
针对结构加固检测的问题 ,提出了采用光纤光栅传感技术进行结构加固过程中应变监测的新方案 ,分析了光纤光栅传感器的传感原理 ,研制出相应的实验系统 ,并通过对 15 0mm× 15 0mm× 12 0 0mm包钢加固混凝土柱进行加载破坏性试验 ,与常规的电检测技术进行了对比实验。实验结果表明 :光纤光栅传感器比电检测系统具有更高量级的精度 ,能绝对数值测量 ,抗干扰能力强 ,结构简单 ,长期稳定性高
农生院校实验室在人才培养方面起着举足轻重的作用,近几年高校实验教学管理暴露出诸多问题,因此加强实验室管理,提高实验设备利用率等已成为实验教学改革的重要内容,探索农业
末级渠道作为灌区灌溉工程的一部分,其工程状况和节水水平对灌区整体节水灌溉的影响很大.本文先分析末级渠系工程的现状和存在的问题,阐述末级渠系改造的意义,浅谈末级渠系改
盛世和平厌朗气清,一壶老窖,两三知己。酒是—个变化多端的精灵,它炽热似火,冷酷象冰;它柔软如锦缎,锋利似钢刀;它能叫人超脱旷达,才华横溢,放荡无常;它能叫人忘却人世的痛苦忧愁和烦恼
骨形态发生蛋白(BMP)作为转化生长因子β(TGF-β)家族的重要成员,因其在促进成骨及软骨等方面的突出作用,已被从不同的方向来研究以利用其生物作用.BMP作为一类细胞因子有其