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Toward Zero Micro/Macro-Scale Wear Using Periodic Nano-Layered Coatings
Penkov, Oleksiy V.,Devizenko, Alexander Yu.,Khadem, Mahdi,Zubarev, Evgeniy N.,Kondratenko, Valeriy V.,Kim, Dae-Eun American Chemical Society 2015 ACS APPLIED MATERIALS & INTERFACES Vol.7 No.32
<P>Wear is an important phenomenon that affects the efficiency and life of all moving machines. In this regard, extensive efforts have been devoted to achieve the lowest possible wear in sliding systems. With the advent of novel materials in recent years, technology is moving toward realization of zero wear. Here, we report on the development of new functional coatings comprising periodically stacked nanolayers of amorphous carbon and cobalt that are extremely wear resistant at the micro and macro scale. Because of their unique structure, these coatings simultaneously provide high elasticity and ultrahigh shear strength. As a result, almost zero wear was observed even after one million sliding cycles without any lubrication. The wear rate was reduced by 8–10-fold compared with the best previously reported data on extremely low wear materials.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/aamick/2015/aamick.2015.7.issue-32/acsami.5b05599/production/images/medium/am-2015-05599v_0008.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/am5b05599'>ACS Electronic Supporting Info</A></P>
Features Of The Implementation Of Inclusive Education: The Role Of The Teacher
Klochko, Oksana,Pohoda, Olena,Rybalko, Petro,Kravchenko, Anatoly,Tytovych, Andrii,Kondratenko, Viktoriia International Journal of Computer ScienceNetwork S 2022 International journal of computer science and netw Vol.22 No.11
The article theoretically analyzed and specified definitions such as: "professional development of personality, competence, professional competence of a teacher". Structural components of professional competence are defined, namely: theoretical involves deep knowledge in the field of special pedagogy, special psychology; technological involves the use of acquired knowledge in practical activities and personal in which important personal characteristics of a special teacher are noted. Criteria and levels of development of professional competence of future special teachers are determined. The article analyzes the peculiarities of the professional activity of a teacher in the conditions of an inclusive educational space, in particular, the special training of a teacher as an integral component of this process. Emphasis is placed on the cooperation of teachers in an inclusive educational institution for the socialization of a child with special needs and her preparation for independent life.