Showing 321 - 338 results of 338 for search '"Plastic"', query time: 0.04s Refine Results
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    Sensitive windows for within- and trans-generational plasticity of anti-predator defences by Tariel-Adam, Juliette, Luquet, Émilien, Plénet, Sandrine

    Published 2023-08-01
    Subjects: “…timing of exposure; sensitive windows; critical windows; predator-prey interactions; Physa acuta; phenotypic plasticity; transgenerational effects; inducible defences…”
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    花椒油中邻苯二甲酸酯类塑化剂的污染现状 及来源分析Pullution status and source analysis of phthalate plasticizers in Zanthoxylum bungeanum oil by 张家余1,2,张逸飞2,薛楚玲1,文成刚1,赵麟1,代倩1,朱翔1, 2 ZHANG Jiayu1,2, ZHANG Yifei2, XUE Chuling1, WEN Chenggang1, ZHAO Lin1,DAI Qian1, ZHU Xiang1, 2"

    Published 2025-01-01
    Subjects: “…花椒油;塑化剂;邻苯二甲酸二正丁酯;邻苯二甲酸二(2-乙基)己酯;污染来源 zanthoxylum bungeanum oil; plasticizer; dibutyl phthalate; bis(2-ethylhexyl)phthalate; pollution sources…”
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  18. 338

    COMPARATIVE RESEARCHES OF FRACTURES OF HIGH-STRENGTH CAST IRON IN THE AS-CAST AND DEFORMED STATE by A. I. Pokrovsky, I. N. Khrol

    Published 2016-01-01
    Subjects: “…the results of comparative studies of fracture surfaces of high-strength cast iron in the as-cast state and after hot direct extrusion through an aperture of a conical die are presented. the shape change of graphite inclusions and components of the metal matrix is examined with increasing the reduction ratio from 0 (as-cast state) to 80%. for the fist time, using the electrochemical etching of the metal matrix of the cast iron, it is demonstrated experimentally that at plastic deformation the ductile flow of graphite inclusions occurs without fracturing of the latter. the surface morphology of a deformed graphite inclusion is revealed. it is shown that inside the inclusion the strain is distributed non-uniformly: the peripheral zones are deformed to a larger extent while the central part may retain its original radial structure. the fact that the most part of graphite inclusions on the fracture surface of the deformed cast iron appeared undamaged (very small amount of fractured inclusions was observed) testifies against the common opinion that graphite acts as a crack nucleation site. a hypothesis is put forward that the crack nucleates in the metal matrix, presumably at the pearlite/ferrite interface, and propagates from one graphite inclusion to another rounding but not damaging the latter.…”
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