Special Issue No. – 10, June, 2020

Abstract:

The aim of this work was to assess the functional reserves of the body to quantify individual health; adaptation, psychophysiological characteristics of the health quality of medical students in different seasons of the year. When studying the temporal organization of physiological functions, the rhythm parameters of physiological functions were determined, followed by processing the results using the Cosinor Analysis program, which reveals rhythms with an unknown period for unequal observations, evaluates 5 parameters of sinusoidal rhythms (mesor, amplitude, acrophase, period, reliability). The essence of desynchronization is the mismatch of circadian rhythms among themselves or destruction of the rhythms architectonics (instability of acrophases or their disappearance). Desynchronization  with respect to the rhythmic structure of the body is of a disregulatory nature, most pronounced in pathological desynchronization. High neurotism, increased anxiety reinforces the tendency to internal desynchronization, which increases with stress. During examination stress, students experience a decrease in the stability of the temporary organization of the biosystem and the tension of adaptive mechanisms develops, which affects attention, mental performance and the quality of adaptation to the educational process. Time is shortened and the amplitude of the “initial minute” decreases, personal and situational anxiety develops, and the level of psychophysiological adaptation decreases. The results of the work are priority because they can be used in assessing quality and level of health.

Keywords:

Desynchronosis,biorhythms,psycho-emotional stress,mesor,acrophase,amplitude,individual minute,

Refference:

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III. Buslovskaya L.K. Adaptation reactions in students at exam stress/ L.K. Buslovskaya, Yu.P. Ryzhkova. Scientific bulletin of Belgorod State University. Series: Natural Sciences. 2011;17(21):46-52.

IV. Chutko L. S. Sindromjemocionalnogovygoranija – Klinicheskie I psihologicheskieaspekty./ L.S Chutko. Moscow: MEDpress-inform, 2013.
V. Eroshina K., Paul Wilkinson, Martin Mackey. The role of environmental and social factors in the occurrence of diseases of the respiratory tract in children of primary school age in Moscow. Medicine. 2013:57-71.

VI. Fagrell B. “Microcirculation of the Skin”. The physiology and pharmacology of the microcirculation. 2013:423.

VII. Gurova O.A. Change in blood microcirculation in students throughout the day. New research. 2013; 2 (35):66-71.

VIII. Khetagurova L.G. – Stress/Ed. L.G. Khetagurov. Vladikavkaz: Project-Press Publishing House, 2010.

IX. Khetagurova L.G., Urumova L.T. et al. Stress (chronomedical aspects). International Journal of Experimental Education 2010; 12: 30-31.

X. Khetagurova L.G., Salbiev K.D., Belyaev S.D., Datieva F.S., Kataeva M.R., Tagaeva I.R. Chronopathology (experimental and clinical aspects/ Ed. L.G. Khetagurov, K.D. Salbiev, S.D.Belyaev, F.S. Datiev, M.R. Kataev, I.R. Tagaev. Moscow: Science, 2004.

XI. KlassinaS.Ya. Self-regulatory reactions in the microvasculature of the nail bed of fingers in person with psycho-emotional stress. Bulletin of new medical technologies, 2013; 2 (XX):408-412.

XII. Kovtun O.P., Anufrieva E.V., Polushina L.G. Gender-age characteristics of the component composition of the body in overweight and obese schoolchildren. Medical Science and Education of the Urals. 2019; 3:139-145.

XIII. Kuchieva M.B., Chaplygina E.V., Vartanova O.T., Aksenova O.A., Evtushenko A.V., Nor-Arevyan K.A., Elizarova E.S., Efremova E.N. A comparative analysis of the constitutional features of various generations of healthy young men and women in the Rostov Region. Modern problems of science and education. 2017; 5:50-59.

XIV. Mathias Adamsson1, ThorbjörnLaike, Takeshi Morita – Annual variation in daily light expo-sure and circadian change of melatonin and cortisol consent rations at a northern latitude with large seasonal differences in photoperiod length – Journal of Physiological Anthropology. 2017; 36: 6 – 15.

XV. Merdenova L.A., Tagaeva I.R., Takoeva E.A. Features of the study of biological rhythms in children. The results of fundamental and applied research in the field of natural and technical sciences. Materials of the International Scientific and Practical Conference. Belgorod, 2017, pp. 119-123.

XVI. Ogarysheva N.V. The dynamics of mental performance as a criterion for adapting to the teaching load. Bulletin of the Samara Scientific Center of the Russian Academy of Sciences. 2014;16:5 (1): S.636-638.

XVII. Pekmezovi T. Gene-environment interaction: A genetic-epidemiological approach. Journal of Medical Biochemistry. 2010;29:131-134.

XVIII. Rapoport S.I., Chibisov S.M. Chronobiology and chronomedicine: history and prospects/Ed. S.M. Chibisov, S.I. Rapoport ,, M.L. Blagonravova. Chronobiology and Chronomedicine: Peoples’ Friendship University of Russia (RUDN) Press. Moscow, 2018.

XIX. Roustit M., Cracowski J.L. “Non-invasive assessment of skin microvascular function in humans: an insight into methods” – Microcirculation 2012; 19 (1): 47-64.

XX. Rud V.O., FisunYu.O. – References of the circadian desinchronosis in students. Ukrainian Bulletin of Psychoneurology. 2010; 18(2) (63): 74-77.

XXI. Takoeva Z. A., Medoeva N. O., Berezova D. T., Merdenova L. A. et al. Long-term analysis of the results of chronomonitoring of the health of the population of North Ossetia; Vladikavkaz Medical and Biological Bulletin. 2011; 12(12,19): 32-38.

XXII. Urumova L.T., Tagaeva I.R., Takoeva E.A., Datieva L.R. – The study of some health indicators of medical students in different periods of the year. Health and education in the XXI century. 2016; 18(4): 94-97.

XXIII. Westman J. – Complex diseases. In: Medical genetics for the modern clinician. USA: Lippincott Williams & Wilkins, 2006.

XXIV. Yadrischenskaya T.V. Circadian biorhythms of students and their importance in educational activities. Problems of higher education. Pacific State University Press. 2016; 2:176-178.

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Abstract:

The present study of comparison methods based on the triadic model introduces the following concepts: the relation of comparability and the relation of comparison, and object comparison and attributive comparison. The difference between active and passive qualitative comparison is shown, two triadic models of passive and active comparison and models for comparing two and three objects are described. Triadic comparison models are proposed as an alternative to dyadic comparison models. Comparison allows finding the common and the different; this approach is proposed for the analysis of the nomothetic and ideographic method of obtaining knowledge. The nomothetic method identifies and evaluates the general, while the ideographic method searches for unique in parameters and in combinations of parameters. Triadic comparison is used in systems and methods of argumentation, as well as in the analysis of consistency/inconsistency.

Keywords:

Comparative analysis,dyad,triad,triadic model,comparability relation,object comparison,attributive comparison,nomothetic method,ideographic method,

Refference:

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V. De BonaG.et al. Classifying inconsistency measures using graphs. Journal of Artificial Intelligence Research 66 (2019) 937{987.
VI. FideliR. La comparazione. Milano: Angeli, 1998.
VII. GordonT. F., PrakkenH., WaltonD. The Carneades model of argument and burden of proof. Artificial Intelligence 10(15) (2007) 875{896.
VIII. GrenzS.J. The social god and the relational self: A Triad theology of the imago Dei. Westminster: John Knox Press, 2001.
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XVI. PührerJ.Realizability of three-valued semantics for abstract dialectical frameworks.Artificial Intelligence 278 (2020) 103{198.
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Abstract:

This paper presents the results of testing a wear-resistant ceramic coating on the work surface of an internal combustion engine (ICE) cylinder’s sleeve. A combined coating formation technology is described that consists in applying an aluminum layer to the sleeve’s work face by gas dynamic spraying and then covering this face with a ceramic layer by microarc oxidation (MAO). A tenfold reduction in the reinforced sleeve has been determined by the accelerated comparative wear rig tests of reference (new) sleeve-piston ring coupling specimens and reinforced specimens with a combined coating. The supplementation of nanoparticle admixture to MAO coating reduces the friction factor between the cylinder sleeve face and the piston ring by 25-30%. The proposed technology can be used to reinforce work surfaces of new cylinder sleeves and recover worn out ones.

Keywords:

Wear resistance,friction factor,gas dynamic spraying,microarc oxidation,ICE cylinder sleeve,

Refference:

I. Aliramezani R, Raeissi K, Santamaria M, et al. Effects of Pulse Current Mode on Plasma Electrolytic Oxidation of 7075 Al in KMnO4 Containing Solution. J Electrochem Soc. 2017; 164(12): 690-698.

II. Alyuminiyevyy motor: stoit li svyazyvat’sya? [Are Aluminum Engines Worth the Cost?]. [Internet]/ 2015 August 24 [cited 2020 Mar 5], https://svpressa.ru/auto/article/130173/. Russian.

III. Chavdarov AV, Skoropupov DI, Milovanov DA, et al. Issledovaniyestoykostikeramicheskikhpokrytiypritermotsiklirovanii [Testing Ceramic Coatings for Resistance to Thermal Cycling], GOSNITI: Trudy. 2015; 121: 298-302.

IV. DudarevaNYu, Kalschikov RV, MusinNkh, et al., Studying microarc oxidation effect on aluminum alloy ice cylinder steeve wear resistance. Bull Irkutsk State Tech Univ. 2013; 9(80): 63-70

V. Famiyen L, Huang, X. Plasma Electrolytic Oxidation Coatings on Aluminum: Microstructures, Properties, and Applications. Mod Concept Mater Sci – MCMS. 2019; 2(1).

VI. IhwangIJ, Shin KR, Lee JS, et al. Formation of black ceramic layer on aluminum alloy by plasma electrolytic oxidation in electrolyte containing NA2WO4. Mater Trans. 2012; 53(3): 559-564.

VII. Intermetallicheskiysplavnaosnovenikel’-alyuminiya [Ni-Al Intermetallic Alloy]. Russian Federation Patent 2148671, C 22 C 19/05. Published in 2000. Russian.

VIII. Kang Sh-h, Tu W-b, Han J-x, et al. A significant improvement of the wear resistance of Ti6Al4V alloy by a combined method of magnetron sputtering and plasma electrolytic oxidation (PEO). Surf Coat Technol. 2019; 358: 879-890.

IX. Kiseleva SK, Zainullina, LI, Abramova MM, et al. Microarc Oxidation of the High-Silicon Aluminum AK12D Alloy. SciEduc Bauman MSTU. 2015; 7: 115–128.

X. Krishtal MM, Ivashin PV, Polunin AV, et al. Povysheniyeiznosostoykostidetaleyalyuminiyevo-kremniyevykhsplavovmetodomMDOdlyaraboty v ekstremal’nykhrezhimakhtreniya [Durability of Parts from Aluminum Alloys Improvement Using Microarc Oxidation for Functioning in Extremal Friction Conditions], Izv Samara Sci Cent Russ Acad Sci. 2013; 13 (4-3): 765-768.

XI. Lesnevskiy LN, LezhnyovL.Yu, Lyakhovetskiy MA. Plazmennyyemetodyformirovaniyaiznosostoykikhpokrytiyelementovteplovykhdvigateleyiustanovok [Plasma Techniques of Forming Wear-Resistant Coatings on Parts of Thermal Engines and Systems]. Bull Sci Tech Dev. 2015; 10(98): 31-43.

XII. MalyshevVN, Gantimirov BM, Volkhin AM, et al. PovysheniyeantifriktsionnykhsvoystviznosostoykikhMDO-pokrytiy [Antifriction Properties Improvement of Wear-Resistant MAO Coatings]. ChemPhysMesoscopy. 2013; 15(2): 285-291. Russian.

XIII. MatykinaE, Skeldon, P. Thompson, GF. Fundamental and practical evaluation of plasma electrolytic oxidation coatings of titanium. Surf Eng. 2013; 23(6): 412-418.

XIV. Miao JG, Wu R, Hao, KD, et al. Effects of Alloying Elements on Structure of Plasma Electrolytic Oxidation Ceramic Coatings on Aluminum Alloys. ApplMech Math. 2013; 310: 85-89.

XV. Peitao G, Mingyang T, ChaoyangZh, et al. Tribological and corrosion resistance properties of graphite composite coating on AZ31 Mg alloy surface produced by plasma electrolytic oxidation. Surf Coat Technol. 2019; 359: 197-205.

XVI. Pezzato L, Cerchier, P.-G, Brunelli, K, et al. Plasma electrolytic oxidation coatings with fungicidal properties. Surf Eng. 2019; 35(4): 325-333.

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XVIII. bonded diamond tools. Surf Coat Technol. 2009; 204(6): 1046-1050.”

XIX. Shandrov BV, ShudrovFV, Nuriev RT. PrimeneniyeMDO-pokrytiykakodinizsposobovuluchsheniyaenergoeffektivnostiiekologichnostimashin [Applying MAO Coatings As One of the Techniques of Making Machines More Energy Efficient and Ecofriendly]. In: Bakhmutov S, Zaitsev S., editors. Section 7 “Tekhnologiiioborudovaniyemekhanosborochnogoproizvodstva” [“Technologies and Equipment for Mechanical Assembly Production”]. Proceedings of the 77th International Scientific and Engineering Conference of Association of Automotive Engineers (AAE) “Avtomobile- itraktorostroyeniye v Rossii: prioritetyrazvitiyaipodgotovkikadrov” [“Car and Tractor Manufacturing in Russia: Priorities for Development and Manpower Training”]. 2016. p, 205-211.

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XXI. Sposobpolucheniyaalyuminatakobal’ta [Cobalt Aluminate Production Technique]. Russian Federation Patent 2363658, C 01 F 7/04. Published in 2009. Russian.

XXII. Ustroystvodlyagazodinamicheskogonaneseniyapokrytiynavnutrenniyepoverkhnostitsilindricheskikhdetaley [Device for Gas Dynamic Coatings of Internal Surfaces of Cylindrical Items]. Russian Federation Patent 2714002, C23C4/12, C23C24/04, B05B7/14. Published in 2020. Russian.

XXIII. Vosstanovleniyetsilindrov s pokrytiyemNIKASIL [Recovering Cylinders with NIKASIL Coating]. [Internet]. 2018 June 25 [cited 2020 Mar 3]. https://www.mehanika.ru/informatory/publications/kolonka-mastera/nikasil/. Russian.

XXIV. Wang Zh, Wu L, Cai W, et al. Effects of fluoride on the structure and properties of microarc oxidation coating on aluminium alloy. J Alloy Compd. 2010; 505(1): 188-193.

XXV. Wei T, Yan F, Tian J. Characterization and wear- and corrosion-resistance of microarc oxidation ceramic coatings on aluminum alloy. J Alloy Compd. 2005; 389(1): 169-176.

XXVI. Xue W, Jin Q, Zhu Q, et al. Anti-corrosion microarc oxidation coatings on SiCP/AZ31 magnesium matrix composite. J Alloy Compd. 2009; 482 (1–2): 208-212.

XXVII. Yin B, PengZh, Liang, J, et al. Tribological behavior and mechanism of self-lubricating wear-resistant composite coatings fabricated by one-step plasma electrolytic oxidation. Tribol Int. 2016; 97: 97-107.

XXVIII. Yu H, Chen Ch. Research status of magnesium alloys by micro-arc oxidation: a review. Surf Eng. 2017; 33(10): 731-738.

XXIX. Zhang Y, Fan W, Du HQ, et al. Y. W. Zhao, Corrosion behavior and structure of plasma electrolytic oxidation coated aluminum alloy. Int J Electrochem Sci. 2017;12(7): 6788-6800.

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