Results 21 to 30 of about 15,975 (304)

Pressure-induced metallization in solid boron [PDF]

, 2001
Different phases of solid boron under high pressure are studied by first principles calculations. The $\alpha$-B$_{12}$ structure is found to be stable up to 270 GPa.
A. Jayaraman, C. Mailhiot, D. Li, D. U. Gubser, D. Vanderbilt, D. W. Bullett, E. D. Jemmis, F. H. Horn, F. P. Bundy, F. Siringo, G. J. Ackland, H. J. Monkhorst, H. Werheit, J. C. Jamieson, J. P. Perdew, J. Wittig, Jian Ping Lu, Jijun Zhao, K. J. Dunn, M. C. Payne, M. Fujimori, M. I. Eremets, M. M. Dacorogna, N. Vast, O. Shimomura, R. J. Nelmes, S. Lee, Y. Wang   +27 more
core   +3 more sources

Combined optical reflectivity measurement and ab initio simulation of expanded gold fluid across the metal–nonmetal transition regime

AIP Advances, 2020
The metal–nonmetal transition is of fundamental interest in contemporary physics. We present a combination of the optical reflectivity measurement of an expanded gold fluid produced by gold L-band x-rays from a Hohlraum and the corresponding ab initio ...
Dongxiao Liu, Wei Fan, Lianqiang Shan, Feng Wang, Min Shui, Bin Zhu, Yuchi Wu, Feng Zhang, Bi Bi, Chao Tian, Weiwu Wang, Zongqiang Yuan, Hongjie Liu, Lei Yang, Lingbiao Meng, Weimin Zhou, Leifeng Cao, Yuqiu Gu   +17 more
doaj   +1 more source

Heteroatom-Doped Nickel Sulfide for Efficient Electrochemical Oxygen Evolution Reaction

Energies, 2023
Heteroatom doping is an effective strategy to regulate electrocatalysts for the oxygen evolution reaction (OER). Nonmetal heteroatoms can effectively engineer geometric and electronic structures and activating surface sites of catalysts due to their ...
Xingqun Zheng, Ling Zhang, Wei He, Li Li, Shun Lu   +4 more
doaj   +1 more source

Reward-to-risk ratios in Turkish financial markets [PDF]

, 2012
This paper investigates how reward-to-risk ratios compare among various government debt security (GDS) indices and sector indices in the Istanbul Stock Exchange. Risk is measured by either standard deviation or nonparametric and parametric value at risk.
Atilgan, Yigit, Atılgan, Yiğit, Demirtas, K. Ozgur, Demirtaş, K. Özgür   +3 more
core   +1 more source

Data on metals, nonmetal, and metalloid in the samples of the canned tuna and canned sardines sold in Brazil

Data in Brief, 2021
The safety of food is a matter of global concern today. Continuous monitoring of canned tuna and canned sardines quality is essential regarding metal, nonmetal, and metalloid content. In this article, we present the data on the elemental content obtained
Nayara Vieira de Lima, Elaine Silva de Pádua Melo, Daniela Granja Arakaki, Paula Fabiana Saldanha Tschinkel, Igor Domingos de Souza, Marlice Oliveira de Oliveira Ulbrecht, Francisco José Mendes dos Reis, Ana Carla Gomes Rosa, Rafaela Henriques Rosa, Valter Aragão do Nascimento   +9 more
doaj   +1 more source

Carbides and Nitrides of Zirconium and Hafnium. [PDF]

, 2019
Among transition metal carbides and nitrides, zirconium, and hafnium compounds are the most stable and have the highest melting temperatures. Here we review published data on phases and phase equilibria in Hf-Zr-C-N-O system, from experiment and ab ...
Hong, Qi-Jun, Navrotsky, Alexandra, Ushakov, Sergey V, van de Walle, Axel   +3 more
core   +1 more source

Effects of magnetic barriers on transport and magnetoresistance in a two-dimensional electronic device

AIP Advances, 2016
We study theoretically the giant magnetoresistance (GMR) effect of 2-dimensional electron system (2DES) by the transfer matrix method. To produce the inhomogeneous magnetic field, two magnetic strips are pre-deposited on the surface of 2DES. In our work,
H. L. He, X. W. Zhang, Z. P. Wang, B. Dai, Y. Ren   +4 more
doaj   +1 more source

Investigation on the Synthesis and Photocatalytic Property of Uranyl Complexes of the β-Diketonates Biscatecholamide Ligand

International Journal of Photoenergy, 2017
A series of uranyl complexes have been synthesized by reacting hexadentate ligands CH2[COO (CH2)nCAM; n=2, 3, 4]2 [CAM = 2,3-Ph(OH)2CONH] containing the catecholamide (CAM) group and β-diketonates framework with uranyl nitrate. They were characterized by
Qingchun Zhang, Bo Jin, Rufang Peng, Xiaofang Wang, Zhaotao Shi, Qiangqiang Liu, Shan Lei, Hua Liang   +7 more
doaj   +1 more source

From Triazines to Heptazines [PDF]

, 2006
The first non-metal tricyanomelaminates have been synthesized via metathesis reactions and characterized by means of single-crystal X-ray diffraction and vibrational and solid-state NMR spectroscopy. The crystal structures of [NH4]2[C6N9H] (1) (P21/c, a =
Lotsch, Bettina V., Schnick, Wolfgang
core   +1 more source

Synthesis and Antibacterial Activities of Sulfur-Containing Bissalicylaldehyde Schiff Base and Binuclear Nickel(II) Nanorod Complex

Journal of Chemistry, 2013
Nickel(II) acetate tetrahydrate was treated with the ligand CH2(H2sal-sbdt)2 in methanol heated at reflux to yield a novel binuclear Ni(II) nanorod complex of the formula CH2{Ni(II)(sal-sbdt)(H2O)}2.
Xiao-Lan Yang, Guo-Qing Zhong, Li Wu
doaj   +1 more source