Showing 61 - 80 results of 382 for search '"nucleation"', query time: 0.06s Refine Results
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    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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  11. 71

    Simulation of grain refinement of Al-8Si-0.2 Mg alloy inoculated with Al-Nb-B via an improved cellular automaton model by Wenqiang Liu, Ruijie Zhang, Xiaoyan Wu, Longfei Li, Hui Zhang, Jun Li, Haitao Jiang

    Published 2025-01-01
    “…Results show that when the inoculant particles were uniformly distributed, latent heat was the main factor restricting nucleation. Latent heat inhibited nucleation by reducing the available undercooling and terminating nucleation at the recalescence. …”
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  12. 72

    Effect of EDTA on the Growth Kinetics and Structural and Optical Properties of KDP Crystal by Anisur Rahman, Jiban Podder

    Published 2010-01-01
    “…The induction period 𝜏 was measured, experiments were performed at selected degrees of supersaturation (C/C∗), and the critical nucleation parameters like interfacial energy (𝜎) were calculated, based on the classical theory of nucleation. …”
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  13. 73

    Insights into Factors Influencing Thermoplastic Elastomer (TPE) Foam Production and the Role of Induced Crystallization by Nigus Maregu Demewoz

    Published 2024-01-01
    “…In TPE, crystallinity can be induced through various means including gas sorption, stress concentration, extrusion, annealing, and self-nucleation. These induced crystals serve as nucleation sites for heterogeneous nucleation during foaming. …”
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  14. 74

    Electronic Properties of TiO2 Nanoparticles Films and the Effect on Apatite-Forming Ability by Johanna Löberg, Jenny Perez Holmberg, Ingela Mattisson, Anna Arvidsson, Elisabet Ahlberg

    Published 2013-01-01
    “…For the rougher surfaces, the nucleation is delayed but once it starts, thick layers are formed. …”
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  15. 75

    Simulating Marine New Particle Formation and Growth Using the M7 Modal Aerosol Dynamics Modal by Ciaran Monahan, Henri Vuollekoski, Markku Kulmala, Colin O'Dowd

    Published 2010-01-01
    “…Simulations were carried out for three different nucleation schemes involving (1) kinetic self-nucleation of OIO (2) nucleation via OIO activation by H2SO4 and (3) nucleation via OIO activation by H2SO4 plus condensation of a low-volatility organic vapour. …”
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  16. 76

    Bacterial Ice Crystal Controlling Proteins by Janet S. H. Lorv, David R. Rose, Bernard R. Glick

    Published 2014-01-01
    “…Ice crystal controlling proteins include both antifreeze and ice nucleation proteins. Antifreeze proteins minimize freezing damage by inhibiting growth of large ice crystals, while ice nucleation proteins induce formation of embryonic ice crystals. …”
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  17. 77

    The evolution process between the earthquake swarm beneath the Noto Peninsula, central Japan and the 2024 M 7.6 Noto Hanto earthquake sequence by Zhigang Peng, Xinglin Lei, Qing-Yu Wang, Dun Wang, Phuc Mach, Dongdong Yao, Aitaro Kato, Kazushige Obara, Michel Campillo

    Published 2025-01-01
    “…Several physical mechanisms of earthquake nucleation, such as pre-slip, cascade triggering, aseismic slip, and fluid-driven models, have been proposed. …”
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  18. 78

    Stability of Human Gallbladder Bile: Effect of Freezing by Paul Janowitz, Richard Mason, Wolfgang Kratzer

    Published 2001-01-01
    “…A significant difference arises in the context of subdivision of the group to the nucleation time. Before freezing, most patients had a nucleation time between five and eight days, which shortened to between one and four days after thawing (P=0.0100). …”
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  19. 79

    Surface Crystallization in Mg-Based Bulk Metallic Glass during Copper Mold Casting by Xin Wang

    Published 2014-01-01
    “…Overheating of the melt and nucleation induced by the surface of copper mold play key roles in the abnormal crystallization. …”
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  20. 80

    Structural insights into the interplay between microtubule polymerases, γ-tubulin complexes and their receptors by Anjun Zheng, Bram J. A. Vermeulen, Martin Würtz, Annett Neuner, Nicole Lübbehusen, Matthias P. Mayer, Elmar Schiebel, Stefan Pfeffer

    Published 2025-01-01
    “…Abstract The γ-tubulin ring complex (γ-TuRC) is a structural template for controlled nucleation of microtubules from α/β-tubulin heterodimers. …”
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