Dislocation nucleation in shocked fcc solids: effects of temperature and preexisting voids

Quantitative behaviors of shock-induced dislocation nucleation are investigated by means of molecular dynamics simulations on fcc Lennard-Jones solids: a model Argon. In perfect crystals, it is found that Hugoniot elastic limit (HEL) is a linearly decreasing function of temperature: from near-zero to melting temperatures. In a defective crystal with a void, dislocations are found to nucleate on the void surface. Also HEL drastically decreases to 15 percent of the perfect crystal when a void radius is 3.4 nanometer. The decrease of HEL becomes larger as the void radius increases, but HEL becomes insensitive to temperature.Comment: 4 pages. (ver.2) All figures have been revised. Two citations are newly added. Numerical unit is unified in the context of solid argon. (ver. 3) A minor revision including new reference

Conformational change in human DNA repair enzyme O6-methylguanine-DNA methyltransferase upon alkylation of its active site by SN1 (indirect- acting) and SN2 (direct-acting) alkylating agents: Breaking a 'salt-link'?

10.1021/bi9603635Biochemistry353812259-12266BICH

Analysis of O6-methylguanine-DNA methyltransferase in individual human cells by quantitative immunofluorescence microscopy

Oncology Research63129-137ONRE

Intracellular localization and intercellular heterogeneity of the human DNA repair protein O6-methylguanine-DNA methyltransferase

10.1007/s002800050427Cancer Chemotherapy and Pharmacology376547-555CCPH