共搜索到18404条信息，每页显示10条信息，共1841页。用时：0小时0分0秒668毫秒
Study on Visible Photoluminescence and Absorption Spectra of Fergusonite Group Minerals XUE Li-hui1,GONG Wei-liang2 (1.Research and Test Center of Materials,Wuhan University of Technology,Wuhan... fergusonite and brocenite, found in Bayun Obo ore deposit in China, were determined and discussed. The results show that the glow centers of the fergusonite group minerals are Er3+ and Eu3+ when 488.0......
Atomic simulation on evolution of nano-crystallizaion in amorphous metals WANG Yu(王 宇), WANG Xiu-xi(王秀喜), WANG Hai-long(王海龙) Key Laboratory of Mechanical Behavior and Design of Materials... amorphous Ni-Pd alloys and the temperature effect on the nano-crystallization behavior in amorphous metals were studied. The results show that the small nano-crystalline grain will nucleate and grow......
成α-Bi2Pd,Bi2Pt和Bi4Rh二元金属间化合物,更能降低体系自由能. REFERENCES [1] CHAUDHARI N K, JOO J, KWON H B, KIM B, KIM H Y, JOO S H, LEE K. Nanodendrites of platinum-group metals for electrocatalytic applications[J]. Nano Research, 2018, 11 (12): 6111-6140. [2] 刘世杰. 铂族金属冶金学[M]. 长沙: 中南大学出版社, 2010: 3-17. LIU Shi-jie. Metallurgy of platinum group metals[M]. Changsha: Central South University Press, 2010: 3-17. [3] 李鹏远, 周......
, and the average diameter of the pore is around 3.5 nm. The nanoplate with mesoporosity is active to methanol electrocatalytic oxidation, and its electrocatalytic property is similar to that of platinum. Key words: tungsten carbide; nanoplate; mesoporosity; electrocatalytic property; platinum similarity 过渡金属碳化物(包括碳化钼,碳化钛,碳化钨,碳化钒等)具有独特的物理化学性能,如机械强度高,导电率高,热稳定和化学稳定性好[1-2],以及较好的催化活性等,这些性能使其受到越来越多的关注.自发现碳化钨(WC)具有类铂电催......
Combined effect of amino and carboxyl group in α-alanine on seeded precipitation of sodium aluminate solution L? Bao-lin(吕保林), CHEN Qi-yuan(陈启元), YIN Zhou-lan(尹周澜), HU Hui-ping(胡慧萍) School... and carboxyl group in α-alanine was confirmed by investigating the effect of propionic acid, ethamine and the mixture of propionic acid and ethamine (mole ratio 1?1) on the precipitation of sodium......
functional groups. The action mechanism of functional group to morphology was also proposed. Key words: 1-octadecanol; stearic acid; oleic acid; Gibbsite morphology; functional group 1 Introduction... the influence of alditols and hydroxy-carboxylic acids[4]. However, there is no report about the exact effect of mono functional group on the gibbsite morphology. In this study, effect of organic......
......
, these hexagonal metals fall into two groups. In the first group, which includes Mg, Co, Ru, Re and Os, regardless of the shear amount,subsequent shuffle is an energy-uphill process, while...Energy paths of twin-related lattice reorientation in hexagonal metals via ab initio calculationsGang Zhou1,2,Lihua Ye1,Hao Wang1,Dongsheng Xu1,Changgong Meng2,Rui Yang11. Institute of Metal Research......
is useful to detect mercury in a sample containing both mercury and nickel together. Key words: enzyme inhibition; amperometric biosensor; heavy metals 1 Introduction The presence of heavy metal salts.... Biosensors based on enzyme inhibition have been applied in a wide range of inhibitory substances such as derivatives of insecticides and pesticides, heavy metals and glycoalkaloids. Inhibition of enzyme......
......
