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Effects of particle size on residual stresses of metal matrix composites YAN Yi-wu(晏义伍), GENG Lin(耿 林), LI Ai-bin(李爱滨) School of Materials Science and Engineering, Harbin Institute of Technology..., and the residual plastic strain decreases with decreasing particle size. Key words: metal matrix composite; thermal residual stress; particle size effects; non-local theory; finite element analysis 1......
; Blasting cumulative damage effects of underground engineering rock mass based on sonic wave measurement YAN Chang-bin(闫长斌)1,2 (1. School of Resources...; Abstract: The principle of sonic wave measurement was introduced, and cumulative damage effects of underground engineering rock mass under blasting load were studied by in situ test, using......
三元配合物[RE(Gly)4(Im)(H2O)](ClO4)3(RE=La,Pr)的热化学研究 刘义1,但悠梦2,赵艳茹3,屈松生1 (1.武汉大学,化学与分子科学学院,湖北,武汉,430072;2.湖北民族学院,湖北,恩施,445000;3.河南许昌学院,化学系,河南,许昌,461000) 摘要:利用自行研制的新型恒温环境反应量热计,以2mol·L-1HCl做溶剂,分别测定了LaCl3 ·7H2O,PrCl3 ·6H2O,[La(Gly)4(Im)(H2O)](ClO4)3,[Pr(Gly)4(Im)(H2O)](ClO4)3,Im,NaClO4,Gly,NaCl在298.15K时的溶解焓,再通过设计的热化学循环求得化学反应的摩尔反应焓,利用这些结果和其它辅助数据,计算出两种配合物的标准摩尔生成焓分别为:ΔfHm{[La(Gly)4(Im)(H2O)](ClO4)3, s......
(H2O)5]Cl3,纯度为98.62%.熔点分析仪分析知其在503 K有不相合熔点.在78.9K~372.5K温区,用高精密全自动绝热量热仪对晶体配合物进行了热容测定.计算机拟合了在78.9K~349.7K平缓曲线温区热容对温度的多项式方程:Cp=-55.574+4.429T-0.0137T2+2.137×10-5T3.在常压,298.15K下用具有恒温环境的反应热量计测定了配合物的标准生成焓值为-3673.982 kJ·mol-1. 关键词:稀土盐; L-脯氨酸; [Er(L-pro)2(H2O)5]Cl3; 低温热容; 标准生成焓; [全文内容正在添加中] ......
Synthesis and crystal structure of a 1D chainlike rare earth coordinated tungstogermenate: [(CH3)4N]1.50H3.50[Gd(GeW11O39)(H2O)2]·2.5H2O WANG Jingping1,LI Jili1,DU Xiaodi1,HAN Ruijuan1,ZHAO Qinglan1...(GeW11O39)(H2O)2]·2.5H2O(1) was synthesized by reaction of the monova-cant polyanion [α-GeW11O39]8- with Gd3+ ions in aqueous solution and characterized by IR, UV spectra, ICP, and X-ray crystallography. X......
钇-四对甲氧基苯基卟啉配合物([Y(TMOPP)(H2O)3]Cl)的伏安行为及其与牛血清白蛋白相互作用的研究 侯安新1,鲍伟1,王长发1,李春涯1 (1.武汉大学化学系,湖北,武汉,430072) 摘要:对钇-四对甲氧基苯基卟啉配合物([Y(TMOPP)(H2O)3]Cl) 修饰玻碳电极的伏安行为进行了研究, 发现它在膜里的氧化还原性质与其在非水溶剂中的电极反应过程存在着差异.该修饰电极膜中的配合物能与牛血清白蛋白发生相互作用, 结果不仅使其氧化还原波形有所改变, 而且峰电流也随牛血清白蛋白的浓度的增大而不断减小. 峰电流的变化(ΔIp)与牛血清白蛋白的浓度在1.0×10-6~1.0×10-4 mol·L-1范围内符合: ΔIp=1.144×104C+0.2226 (r2=0.9923)关系式. 荧光光谱法的测量也证明了牛血清白蛋白与[Y(TMOPP)(H2O)3] 存在着相互作......
Surface effects on large deflection of nanowiresYang fan(杨帆)1, 2(1. Department of Mechanics, Xi’an University of Science and Technology, Xi’an 710054, China;2. Department of Engineering Mechanics, Xi’an Jiaotong University, Xi’an 710049, China)Abstract:Surface effects play an important role in the mechanical behavior of nanosized structural elements owing to the increased ratio of surface area......
Study on syntheses and structures of nine-coordinated mononuclear K[TbⅢ(edta)(H2O)3]·5H2O and binuclear K4[TbⅢ2(Httha)2]·14H2O complexesWANG Jun, LIU Zhenrong, ZHANG Xiangdong, JIA Weiguo, and ZHANG YangDepartment of Chemistry, Liaoning University, Shenyang 110036, China摘 要:<正> The crystal and molecular structures of the K[TbⅢ(edta)(H2O)3]-5H2O......
某金属矿山采场爆破系统的模糊FMECA评价凌申怀1,许梦国1,程勃1,胡勇志2(1.湖北省武汉市武汉科技大学冶金矿产资源高效利用与造块湖北省重点实验室2.武汉安全环保研究院)摘 要:金属矿山采场爆破作业包括七大事故模式,即早爆,拒爆,迟爆,爆破飞石,爆破震动,冲击波,炮烟中毒,在对这些危险有害因素进行初步分析的基础上,运用模糊FMECA方法对某金属矿山爆破系统进行综合评价,对危险度高的拒爆事故模式建造了事故树,并根据评价和分析的结果提出了相应的预防措施,为金属矿山爆破安全管理提供一定的依据.关键词......
