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浏览/检索结果: 共211条，第1-10条 帮助 限定条件 发表日期：2012    专题：北京大学    第一署名单位    第一作者单位    通讯作者单位     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Characteristics of the Permafrost Structure on the Fildes Peninsula, King George Island, Antarctica 期刊论文 http://epub.edu.cnki.net/grid2008/brief/detailj.aspx?filename=JBXG199308012&dbname=CJFQ1993, 2012, 2012 朱诚; 崔之久; 熊黑钢; 姚增 收藏  |  浏览/下载：3/0  |  提交时间：2017/06/16 permafrost structure  active layer  granularity parameter  geoelectrical prospectings  salt content.   Asymmetrical phenyldiacetylenes liquid crystalline compounds with high birefringence and characteristics of selective reflection 期刊论文 liquid crystals, 2012 Miao, Zong-cheng; Wang, Dong; Zhang, Yong-ming; Jin, Zhao-kui; Liu, Fang; Wang, Fei-fei; Yang, Huai 收藏  |  浏览/下载：4/0  |  提交时间：2015/11/12 liquid crystal  phenyldiacetylenes  birefringence  selective reflection  MESOMORPHIC PROPERTIES  STYRENE MONOMERS  POLYMERS  TOLANE  DIPHENYLDIACETYLENES  DERIVATIVES  ANISOTROPY  PHASE   Martensitic Transformation and Shape Memory Effect of NiCoMnSn High Temperature Shape Memory Alloy 会议论文 Chen, F.; Tong, Y. X.; Lu, X. L.; Tian, B.; Li, L.; Zheng, Y. F. 收藏  |  浏览/下载：4/0  |  提交时间：2015/11/12 high temperature  martensitic transformation  NiCo-MnSn  shape memory alloy  shape recovery   First and second thermodynamic-law analyses of hydrogen-air counter-flow diffusion combustion in various combustion modes 期刊论文 国际氢能杂志, 2012 Chen, Sheng; Mi, Jianchun; Liu, Hao; Zheng, Chuguang 收藏  |  浏览/下载：4/0  |  提交时间：2015/11/12 Counter-flow combustion  Hydrogen-air diffusion combustion  Flameless combustion  High temperature air combustion  Mild combustion  Entropy generation  ENTROPY GENERATION  MILD COMBUSTION  FLAMELESS COMBUSTION  NATURAL-CONVECTION  PREMIXED HYDROGEN  FORCED-CONVECTION  BIOGAS  HEAT  SIMULATION  REGIME   Oxidation mechanism of ZrB2/SiC ceramics based on phase-field model 期刊论文 复合材料科学与技术, 2012 Ma, Yinji; Yao, Xuefeng; Hao, Wenfeng; Chen, Liangjia; Fang, Daining 收藏  |  浏览/下载：1/0  |  提交时间：2015/11/12 Ceramic-matrix composites (CMCs)  High-temperature properties  Porosity/Voids  Modelling  HIGH TEMPERATURE CERAMICS  DIBORIDE-BASED CERAMICS  ZIRCONIUM  COMPOSITES  DIFFUSION  BEHAVIOR  STRESS  ALLOY   Thermal shock resistance of ultra-high temperature ceramics including the effects of thermal environment and external constraints 期刊论文 materials design, 2012 Li, Dingyu; Li, Weiguo; Zhang, Wenbo; Fang, Daining 收藏  |  浏览/下载：2/0  |  提交时间：2015/11/12 COMPOSITES  OXIDATION  CRACKING  HAFNIUM   Temperature-damage-dependent thermal shock resistance model for ultra-high temperature ceramics 期刊论文 engineering fracture mechanics, 2012 Li, Weiguo; Li, Dingyu; Cheng, Tianbao; Fang, Daining 收藏  |  浏览/下载：2/0  |  提交时间：2015/11/12 Thermal shock resistance  Ultra-high temperature ceramics  Microstructure design  Strength  Damage  BEHAVIOR   Design for Broadband High-Temperature Radome Wall with Graded Porous Structure 期刊论文 aiaa journal, 2012 Zhou, Licheng; Pei, Yongmao; Zhang, Rubing; Fang, Daining 收藏  |  浏览/下载：4/0  |  提交时间：2015/11/13 SI3N4 CERAMICS  POROSITY  PLATES   Spreading process and interfacial characteristic of Sn-17Bi-0.5Cu/Ni at temperatures ranging from 523 K to 673 K 期刊论文 colloids and surfaces a physicochemical and engineering aspects, 2012 Zang, Likun; Yuan, Zhangfu; Zhu, Yuanqing; Xu, Bingsheng; Matsuura, Hiroyuki; Tsukihashi, Fumitaka 收藏  |  浏览/下载：2/0  |  提交时间：2015/11/12 Surfaces and interfaces  Intermetallics  Metals and alloys  Scanning electron microscopy (SEM)  Microstructure  LEAD-FREE SOLDERS  SN-AG-CU  SURFACE-TENSION  MOLTEN SILICON  WETTABILITY  SUBSTRATE  ALLOYS  DYNAMICS  SYSTEMS  AL   Novel high birefringence bistolane liquid crystals with lateral fluorosubstituent 期刊论文 liquid crystals, 2012 Zhang, Yong-ming; Wang, Dong; Miao, Zong-cheng; Jin, Shao-kui; Yang, Huai 收藏  |  浏览/下载：3/0  |  提交时间：2015/11/12 high birefringence  bistolane liquid crystals  lateral fluorosubstituent  wide temperature range  DERIVATIVES  MONOMERS