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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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    A history of Sub-Saharan Africa / by Collins, Robert O., 1933-2008

    Published 2014
    Table of Contents:
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    Street art et mise en tourisme de la métropole parisienne, des festivals aux street art tours by Sophie Blanchard, Romain Talamoni

    Published 2018-07-01
    “…The private actors who organize these street art tours try to reach a very large audience, from curious locals to international tourists, and use mainly the internet for their promotion, via independent sites as well as major ones like Airbnb. Street art tours participate in the touristification of gentrified or renovated areas, therefore taking part in the intertwined power relations of urban society.…”
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    The International Commission On Mathematical Instruction (ICMI) by Suporte GEPEM

    Published 2006-06-01
    “…Lopes, José Paulo Carneiro, Maurício Matos Peixoto eAirton Gonçalves. …”
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    “Some Real War Shit. … I Fucking Held the Camera”: Re-implacing Iraq in Roy Scranton’s War Porn (2016) by Barbara Kowalczuk

    Published 2019-12-01
    “…Recalling the human rights violations photographed at Abu Ghraib in 2003, Aaron’s “war porn” triggers re-implacing, that is, remembering and re-experiencing a past place (Casey). …”
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  19. 939

    Dijital Kültür Olarak Mizaha Memetik Bir Bakış ve Yaşlı Bireylerin Anlamlandırma Süreci by Nagihan Ünlü Karataş

    Published 2024-07-01
    “…Bu süreçte ironi, metinler arası ilişkiler, değişkenlik ve parçalanmışlık gibi özellikler ön plana çıkar. …”
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    Tourism, hospitality and digital transformation : strategic management aspects /

    Published 2020
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