Results 191 to 200 of about 2,183,502 (251)

Initiating Coarse-Grained MD Simulations for Membrane-Bound Proteins

2021
Molecular dynamics (MD) simulations have become a widely used tool in the scientific community for understanding molecular scale phenomena that are challenging to address with wet-lab techniques. Coarse-grained simulations, in which multiple atoms are combined into single beads, allow for larger systems and longer time scales to be explored than ...
Amanda, Buyan, Ben, Corry
openaire   +2 more sources

Economic impacts of the Black Sea Grain Initiative

Journal of Agricultural Economics, 2023
AbstractIn this research, we use econometric analysis to estimate the impacts of the Black Sea Grain Initiative on international wheat and corn prices. Using these results, we assess the economic value of the treaty to the global food system, as well as the regional distribution of the associated welfare savings.
Davood Poursina, K. Aleks Schaefer, Sidany Hilburn, Tuff Johnson   +3 more
openaire   +1 more source

Grain boundary migration initiated by diffusion

Russian Physics Journal, 1992
A review is presented of work related to two new processes which arise in crystalline materials when impurities diffuse along grain boundaries from the surface of the material: diffusion-initiated grain boundary migration and recrystallization. We analyze the conditions under which DIGM occurs, the kinetics of the process, its driving forces, and also ...
A. D. Korotaev, Yu. I. Pochivalov
openaire   +1 more source

Kinetics of Initial Sintering with Grain Growth

Journal of the American Ceramic Society, 1970
Kinetic equations for initial sintering were obtained by combining the conventional kinetic equation with an empirical expression for grain growth in the initial stage. The equations describe the isothermal shrinkage of ZnO in O 2 at 80 torr and 800° to 950°C.
YUSUKE MORIYOSHI, WAZO KOMATSU
openaire   +1 more source

Thermal Relaxation of Initially Fractal Grain Boundaries

Fractals, 1997
The concept of fractal geometry is used to describe serrated and rugged grain boundaries in the pure materials Zinc and Titanium after deformation and heat treatment. The fractal dimension of the grain boundaries are determined by application of optical and scanning electron microscopy over a wide range of magnifications.
P. Streitenberger, D. Förster, P. Veit
openaire   +1 more source

Influence of grain size on the small fatigue crack initiation and propagation behaviors of a nickel-based superalloy at 650 °C

Journal of Materials Science & Technology, 2019
GH4169 at 650 °C in atmosphere was investigated by using single edge notch tensile specimens. The number of main cracks and crack initiation mechanisms at the notch surface strongly depended on the grain size. The crack initiation life accounted for more
Zhu Xumin, Congyang Gong, Yun-Fei Jia, Run-Ping Wang, Chengcheng Zhang, Yao Fu, S. Tu, Xiancheng Zhang   +7 more
semanticscholar   +1 more source

On the stability of grain structure with initial Weibull grain size distribution

Materials Letters, 2003
A microstructure with a Weilbull grain size distribution (GSD) was generated and subjected to normal grain growth (NGG) by the Monte Carlo Potts method. The results show that the GSD keeps almost invariant during NGG. The Weibull function fits well the steady-state GSDs evolving from the Weibull and the Hillert distributions.
Chao Wang, Guoquan Liu
openaire   +1 more source

Transgranular fracturing of crystalline rocks and its influence on rock strengths: Insights from a grain-scale continuum–discontinuum approach

, 2021
The aim of this study is to understand the effects of micro-heterogeneity, such as grain size, morphology and mineralogy, on the initiation, propagation and coalescence of microcracks in heterogeneous materials.
X. Li, H. B. Li, Jian Zhao
semanticscholar   +1 more source

Effect of initial grain size on the secondary grain growth in molybdenum sheet

Materials Science and Engineering, 1984
Abstract In order to understand in more detail the secondary recrystallization behaviour of rolled molybdenum sheet doped with CaO and MgO, the effect of initial grain size on the secondary grain growth behaviour was investigated using optical microscopy and X-ray diffraction.
Tadayuki Fujii, Ryoji Watanabe, Yutaka Hiraoka, Masatoshi Okada   +3 more
openaire   +1 more source

Effect of initial grain sizes on the grain boundary network during grain boundary engineering in Alloy 690

Journal of Materials Research, 2013
Abstract
Tingguang Liu, Shuang Xia, Hui li, Bangxin Zhou, Qin Bai, Cheng Su, Zhigang Cai   +6 more
openaire   +1 more source