Microplasticity and yielding in crystals with heterogeneous dislocation distribution

Yielding transitions and grain-size effects in dislocation theory.

The statistical-thermodynamic dislocation theory developed in previous papers is used here in an analysis of yielding transitions and grain-size effects in polycrystalline solids. Calculations are based on the 1995 experimental results of Meyers, Andrade, and Chokshi [Metall. Mater. Trans. A 26, 2881 (1995)MMTAEB1073-562310.1007/BF02669646] for polycrystalline copper under strain-hardening cond...

Heterogeneous distribution of dye-labelled biomineralizaiton proteins in calcite crystals.

Biominerals are highly ordered crystals mediated by organic matters especially proteins in organisms. However, how specific proteins are distributed inside biominerals are not well understood. In the present study, we use fluorescein isothiocyanate (FITC) to label extracted proteins from the shells of bivalve Pinctada fucata. By confocal laser scanning microscopy (CLSM), we observe a heterogene...

the past hospitalization and its association with suicide attempts and ideation in patients with mdd and comparison with bmd (depressed type) group

چکیده ندارد.

Dislocation dynamics in disordered crystals with high peierls barriers

Dislocation Kink Dynamics in Crystals with Deep Peierls Potential Relief

Processes of the nucleation and motion of kinks, determining the dislocation mobilities in crystals with high Peierls barriers, are reviewed. Various mechanisms of an influence of point defects on the kink dynamics are analyzed. To demonstrate these mechanisms experimental data are presented obtained with two-level intermittent loading of Si, Ge, and bulk SiGe alloy single crystals. The instabi...