Journal articles: 'Iamata'

1

LiDonnici, Lynn R. "Compositional Background of the Epidaurian 'Iamata." American Journal of Philology 113, no. 1 (1992): 25. http://dx.doi.org/10.2307/295123.

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Scott, Calloway. "Gender in the Temple: Women's Ailments in the Epidaurian Miracle Cures." Classical Antiquity 37, no. 2 (October 1, 2018): 321–50. http://dx.doi.org/10.1525/ca.2018.37.2.321.

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This paper compares the cases of female ailments recorded in the Epidaurian Miracles Cures (iamata) with the theory and therapeutics of the Hippocratic gynecological texts as a means of testing the extent of the assumptions shared between temple and Hippocratic medicine. I argue that where temple and Hippocratic practice hold common ground, it is readily explicable through widely circulating and historically rooted cultural presuppositions regarding female physiology and pathology, rather than through scientific borrowings. Rather than representing complementary outlets of medical care in which Asklepios specialized in “hopeless” cases, I suggest that the iamata permit us to observe a process in which parallel medical traditions branched out from a common cultural substratum, and that more nuance is required in framing the relationship between Greek naturalist and religious medicine.

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von Ehrenheim, Hedvig. "Causal explanation of disease in the iamata of Epidauros." Kernos, no. 32 (December 1, 2019): 101–18. http://dx.doi.org/10.4000/kernos.3125.

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Błaśkiewicz, Monika. "Articles: Healing dreams at Epidaurus. Analysis and interpretation of the Epidaurian iamata." Miscellanea Anthropologica et Sociologica 15, no. 4 (December 29, 2014): 54–69. http://dx.doi.org/10.5604/20842937.1138963.

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Giambrone, Anthony. "Jesus and the Paralytics." Biblical Annals 10, no. 3 (May 17, 2020): 389–404. http://dx.doi.org/10.31743/biban.9681.

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This study explores the Greco-Roman memorialization of healings through material culture as a point of comparison for the Gospels’ miracle traditions. Special attention is given to the ex-votos left at healing shrines and especially the Iamata inscriptions connected with the Asclepius cult. This corpus of evidence brings into focus a series of dynamics that help illuminate the stories of Jesus’ two healings of a paralytic (John 5:1-15; Mark 2:1-10). The comparisons help clarify both the common memorializing supports that informed and sustained the memory of Jesus transmitted in the Gospels, as well as the distinctive relationship of the Christian cult to certain specific places where memories of Jesus where preserved.

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De Sousa, Adriano Amaro. "Territorialidade e mobilidade: o Nikkei como profissional liberal médico / Territoriality and mobility: Nikkei as a medical liberal professional." Geografia em Atos (Online) 6, no. 13 (November 13, 2019): 77–95. http://dx.doi.org/10.35416/geoatos.v6i13.6521.

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O presente artigo procurou compreender a territorialidade e a mobilidade dos profissionais liberais nikkeis médicos no município de Presidente Prudente/SP. Para tanto, os aspectos metodológicos estão balizados pelos depoimentos orais dos nikkeis descritos na literatura especializada da ciência geográfica. Todavia, na primeira parte do artigo, iremos tratar do conceito de territorialidade articulado com as relações de sociabilidade dos japoneses e seus descendentes no Brasil, visando compreender a mobilidade das famílias nipônicas. Já na segunda parte, buscaremos traçar o percurso da mobilidade espacial e social dos nikkeis profissionais liberais médicos, tendo como estudo de caso a trajetória (vida, estudos e profissão) de três médicos: o dr. Sizuvo Iamada, o dr. Tadashi Uchida e o dr. Neiw Iamada. Assim, o dr. Sizuvo Iamada não era originário de Presidente Prudente/SP, mas escolheu essa cidade para empreender, trabalhar e morar. Porém, no caso dos doutores Tadashi Uchida e Neiw Iamada ambos têm Presidente Prudente/SP como lugar de origem e são filhos da classe média/alta local, terminaram a faculdade/residência e, paulatinamente, retornaram ao município natal como médicos para assumir os negócios da família.Palavras-chave: territorialidade, mobilidade, família, nikkei e Presidente Prudente/SP.

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Kitamoto, Takumi, Kanako Kiriyama Kitamoto, Masao Omura, Tomoko Takiguchi, Yuya Tsurutani, Haremaru Kubo, Yuto Yamazaki, Hironobu Sasano, Jun Saito, and Tetsuo Nishikawa. "Precise Mapping of Intra-Adrenal Aldosterone Activities Provides a Novel Surgical Strategy for Primary Aldosteronism." Hypertension 76, no. 3 (September 2020): 976–84. http://dx.doi.org/10.1161/hypertensionaha.119.14341.

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Segmental selective adrenal venous sampling (sAVS) elucidates an intraadrenal aldosterone activity map (IAMap), which allows us to design a novel surgical treatment strategy for patients with primary aldosteronism. We evaluated the usefulness of sAVS by analyzing 278 patients with whom we had prospectively used IAMap using the criteria of sAVS for surgical indication between 2009 and 2015. We evaluated its diagnostic accuracy using pathological and postsurgical biochemical and clinical outcomes. One hundred twenty and 158 patients were diagnosed with unilateral and bilateral disease, respectively, through sAVS. The concordance of lateralization diagnosis with computed tomography imaging was 66.6%. Among the unilateral patients, we performed partial adrenalectomy in 68 patients whose IAMap showed focal aldosterone hypersecretion from computed tomography-detectable tumor in the affected adrenal gland. All of them achieved complete biochemical success 1 year after surgery. Furthermore, 25 of 158 bilateral disease patients underwent surgical resection because they were preoperatively diagnosed as bilateral aldosterone-producing adenomas by IAMap. These cases showed complete or partial biochemical success (28.0% and 72.0%, respectively); 36.0% showed complete clinical success. Pathological studies demonstrated that all 145 resected specimens possessed aldosterone-producing adenoma or multiple nodules (132 and 13 cases, respectively), and none showed diffuse hyperplasia. IAMap accurately diagnosed both bilateral and unilateral aldosterone-producing adenomas and diffuse hyperplasia before surgery. sAVS allows a novel surgical strategy for selected PA patients with favorable outcomes.

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Wickkiser, Bronwen L. "THE IAMATIKA OF THE MILAN POSIDIPPUS." Classical Quarterly 63, no. 2 (November 8, 2013): 623–32. http://dx.doi.org/10.1017/s0009838813000141.

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The ἰαματικά, a collection of seven short epigrams about healing grouped together and so labelled in the Milan papyrus attributed to Posidippus, present another useful source of information about the cult and cures of Asclepius (AB 95–101; P Mil. Vogl. VIII 309, XIV.30–XV.22). Brief though the epigrams are (all are four lines in length except the first, which is eight lines), they accord well with the picture of the cult presented by material, epigraphic and other literary evidence.

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Wang, Lin, Ronghua Shi, and Jian Dong. "A Hybridization of Dragonfly Algorithm Optimization and Angle Modulation Mechanism for 0-1 Knapsack Problems." Entropy 23, no. 5 (May 12, 2021): 598. http://dx.doi.org/10.3390/e23050598.

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The dragonfly algorithm (DA) is a new intelligent algorithm based on the theory of dragonfly foraging and evading predators. DA exhibits excellent performance in solving multimodal continuous functions and engineering problems. To make this algorithm work in the binary space, this paper introduces an angle modulation mechanism on DA (called AMDA) to generate bit strings, that is, to give alternative solutions to binary problems, and uses DA to optimize the coefficients of the trigonometric function. Further, to improve the algorithm stability and convergence speed, an improved AMDA, called IAMDA, is proposed by adding one more coefficient to adjust the vertical displacement of the cosine part of the original generating function. To test the performance of IAMDA and AMDA, 12 zero-one knapsack problems are considered along with 13 classic benchmark functions. Experimental results prove that IAMDA has a superior convergence speed and solution quality as compared to other algorithms.

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10

Share, Leonard. "Control of Vasopressin Release: An Old But Continuing Story." Physiology 11, no. 1 (February 1, 1996): 7–13. http://dx.doi.org/10.1152/physiologyonline.1996.11.1.7.

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Vasopressin, a nonapeptide, is synthesized in magnocellular neurons of the paraventricular and supraoptic nuclei. Its release is stimulated by increased osmohiity, sensed by osmoreceptors in the Iamina terminalis, and by reductions in blood volume and blood pressure, sensed by arterial baroreceptors and cardiac receptors. The role of cardiac receptors is controversial.

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Ho, S. H., A. Ghani Supri, and Pei Leng Teh. "Effect of Isophthalic Acid-Maleic Anhydride (IAMA) as a Compatibilizer on Tensile Properties and Swelling Behavior of Ethylene Vinyl Acetate (EVA)/Natural Rubber (NR)/Potash Feldspar Composites." Applied Mechanics and Materials 679 (October 2014): 76–80. http://dx.doi.org/10.4028/www.scientific.net/amm.679.76.

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The effect of isophathalic acid-maleic anhydride (IAMA) as a compatibilizer on the tensile properties and swelling behavior of ethylene vinyl acetate /natural rubber/ feldspar (EVA/NR/PF) composites were studied. The EVA/NR/PF composites with and without IAMA were prepared using Brabender Plasticoder at 160oC with 50rpm rotor speed. The results indicated that EVA/NR/PF/IAMA showed higher value of tensile strength and M100 but lower elongation at break and percentage mass swell compared to EVA/NR/PF composites.

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12

Paetzel, C., N. Zorger, M. Völk, T. Herold, J. Seitz, W. R. Nitz, S. Feuerbach, O. Hamer, and M. Lenhart. "Intra‐arterial magnetic resonance angiography of the iliac arteries: clinical experience using two different protocols." Acta Radiologica 46, no. 3 (May 2005): 250–55. http://dx.doi.org/10.1080/02841850510021030.

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Purpose: To assess the feasibility of intra‐arterial magnetic resonance angiography (iaMRA) with two different protocols. Material and Methods: Twenty patients were prospectively examined after digital subtraction angiography. Contrast‐enhanced iaMRA was performed using a 1.5T magnetic resonance imaging (MRI) system. Contrast agent (gadodiamide) was injected through a conventional angiography catheter placed in the abdominal aorta. The patients were randomized into two groups each comprising 10 patients. Group 1 was examined with a FLASH‐3D (fast low‐angle shot) sequence, allowing the center of the k‐space to be acquired 0.5 s after initiation of the measurement. Group 2 was examined with the identical sequence, but the center of the k‐space was acquired after 8.7 s. The increase in the intravascular signal intensity was determined and the diagnostic value of the angiograms was independently scored by 4 investigators using a 5‐point scale. Results: Nineteen of 20 MRAs were scored as diagnostic; only 1 was scored as non‐diagnostic by 2 observers. The diagnostic value of the angiograms of group 2 was judged superior to that of group 1 owing to a more homogeneous intravascular contrast distribution. Conclusion: Intra‐arterial MRA is feasible. The diagnostic value of angiograms using a flash sequence with center of the k‐space acquisition after 8.7 s ranged from good to excellent. This sequence is appropriate for iaMRA of iliac arteries to support MR guided intervention.

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13

Bozó, L. "Hungarian national report on IAMAS 1999-2002." Acta Geodaetica et Geophysica Hungarica 38, no. 2 (2003): 227–36. http://dx.doi.org/10.1556/ageod.38.2003.2.5.

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Bozó, L. "Hungarian national report on IAMAS 2003–2006." Acta Geodaetica et Geophysica Hungarica 42, no. 2 (June 2007): 235–49. http://dx.doi.org/10.1556/ageod.42.2007.2.5.

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15

Bozó, L. "Hungarian national report on IAMAS 2007–2010." Acta Geodaetica et Geophysica Hungarica 46, no. 2 (June 2011): 215–31. http://dx.doi.org/10.1556/ageod.46.2011.2.5.

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16

Roper, B. "IAMAP 1991: The joys of international science." Eos, Transactions American Geophysical Union 73, no. 23 (1992): 250. http://dx.doi.org/10.1029/91eo00204.

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17

Bozó, László. "Hungarian national report on IAMAS 1999-2002." Acta Geodaetica et Geophysica Hungarica 38, no. 2 (June 2003): 227–36. http://dx.doi.org/10.1556/074.38.2.d60217m4177q5114.

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18

Turner, John, and Teruyuki Nakajima. "Report on IAMAS Activity since 2015 and the IAPSO-IAMAS-IAGA Scientific Assembly—Good Hope For Earth Sciences." Advances in Atmospheric Sciences 35, no. 4 (February 16, 2018): 371–75. http://dx.doi.org/10.1007/s00376-017-7240-x.

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MacCracken, Michael C., and Hans Volkert. "IAMAS: a century of international cooperation in atmospheric sciences." History of Geo- and Space Sciences 10, no. 1 (April 16, 2019): 119–36. http://dx.doi.org/10.5194/hgss-10-119-2019.

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Abstract. The International Association of Meteorology and Atmospheric Sciences (IAMAS) was founded in 1919 as the Section of Meteorology of the International Union of Geodesy and Geophysics (IUGG). Significant advances over human history, particularly during the 19th century, in the gathering, communication, assembly and analysis of observations of the changing weather and in theoretical understanding of the fundamental physical relationships and processes governing atmospheric circulation had been driven by the need for improved weather and climate forecasts to support the expansion of global trade, better public warnings of extreme weather, and safer and more effective military operations. Since its foundation, in parallel and cooperation with intergovernmental development under the auspices of what is now the World Meteorological Organization (WMO), IAMAS and its 10 international commissions have provided the international organizational framework for the convening of the general and scientific assemblies and other meetings that bring together expert scientists from around the world to further advance scientific understanding and prediction of the behaviour of the atmosphere and its connections to and effects on other components of the Earth's intercoupled geophysical system.

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20

Kurgansky, M. V., and V. N. Krupchatnikov. "Research in dynamic meteorology in Russia in 2015–2018." Известия Российской академии наук. Физика атмосферы и океана 55, no. 6 (December 21, 2019): 6–47. http://dx.doi.org/10.31857/s0002-35155566-47.

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This review outlines the most significant results of research in dynamic meteorology performed by Russian scientists in 20152018. It is part of the Russian National Report on Meteorology and Atmospheric Sciences submitted to the International Association of Meteorology and Atmospheric Sciences (IAMAS). The review is supplemented by a list of main publications of Russian scientists on dynamic meteorology in 20152018.

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Ho, Shuh Huey, A. Ghani Supri, and Pei Leng Teh. "Effect of Filler Loading and Isophthalic Acid-Maleic Anhydride (IAMA) on Properties of Ethylene Vinyl Acetate/Natural Rubber/Potash Feldspar (EVA/NR/PF) Composites." Applied Mechanics and Materials 695 (November 2014): 60–63. http://dx.doi.org/10.4028/www.scientific.net/amm.695.60.

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The EVA/NR/PF composites with and without IAMA were prepared using Brabender Plasticoder at 160oC with 50rpm rotor speed. The effects of potash feldspar loading and isophathalic acid-maleic anhydride (IAMA) on the tensile properties and morphology analysis of EVA/NR/PF composites were studied. The results indicated that tensile strength for EVA/NR/PF and EVA/NR/PFIAMA composites decreased but M100 increased as the filler loading increased. EVA/NR/PFIAMA composites showed higher value of tensile strength and M100.

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Souza, Roberto, Letícia Rittner, Rubens Machado, and Roberto Lotufo. "iamxt: Max-tree toolbox for image processing and analysis." SoftwareX 6 (2017): 81–84. http://dx.doi.org/10.1016/j.softx.2017.03.001.

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Mareev, E. A., V. N. Stasenko, M. V. Shatalina, S. O. Dementyeva, A. A. Evtushenko, E. K. Svechnikova, and N. N. Slyunyaev. "Russian studies of atmospheric electricity in 2015–2018." Известия Российской академии наук. Физика атмосферы и океана 55, no. 6 (December 21, 2019): 79–93. http://dx.doi.org/10.31857/s0002-351555679-93.

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This review contains the most significant results of Russian studies in the field of atmospheric electricity in 20152018. It is part of the Russian National Report on Meteorology and Atmospheric Sciencesto the International Association of Meteorology and Atmospheric Sciences (IAMAS). The report was presented and approved at the XXVII General Assembly of the International Union of Geodesy and Geophysics (IUGG) 1. The review is followed by a list of the main published works on the studies of atmospheric electricity of Russian scientists in 20152018.

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Yuzhakov, Alexander A. "Siberian Private Reindeer Herders and the Market: The Case of Iamal." Region: Regional Studies of Russia, Eastern Europe, and Central Asia 9, no. 1 (2020): 53–82. http://dx.doi.org/10.1353/reg.2020.0006.

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Po, Wu, Boris Tymoshevskyy, Yuriy Halynkin, and Andriy Proskurin. "CONCEPT OF THE AUTONOMOUS HYDROGEN FUELLING STATION BASED ON PHOTOVOLTAIC AND METAL-HYDRIDE TECHNOLOGIES FOR FUEL CELL ELECRIC VEHICLE. ANALYSIS OF EXISTING FUELLING STATIONS TYPES AND VEHICLES USING HYDROGEN, HYDROGEN PRODUCTION AND STORING METHODS." Science Journal Innovation Technologies Transfer, no. 2019-1 (February 2, 2019): 26–31. http://dx.doi.org/10.36381/iamsti.1.2019.26-31.

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At present time internal combustion engines (ICE) are the most spread as main and auxiliary ICE for vehicles, vessels, power generation, etc. Their application is associated with low energy efficiency, negative impact on the environment due to high emissions of harmful substances and the use of oil fuels. The vehicles with electric motors are alternative upon to existing ones.

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Qi, Gu, Oleksiy Kozlov, Oleksandr Gerasin, and Galyna Kondratenko. "DEVELOPMENT OF COMPUTERIZED MONITORING AND CONTROL SYSTEM OF THE MOBILE ROBOT’S POSITIONING ON LARGE FERROMAGNETIC SURFACES BASED ON INTELLIGENT TECHNIQUES. MODELING OF AN AUTOMATIC CONTROL SYSTEM FOR A MULTIPURPOSE MOBILE ROBOT’S SPATIAL MOTION." Science Journal Innovation Technologies Transfer, no. 2019-1 (February 2, 2019): 33–39. http://dx.doi.org/10.36381/iamsti.1.2019.33-39.

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The paperpresents thesimulationmodelofthe automaticcontrolsystem (ACS) for acaterpillar mobilerobot(MR)with separate mainclamping magnets intended for moving on erromagnetic surfaces. The developed modelaccounts for the mutualinfluenceofthe MR positioning parameters, as wellas the main properties ofthe ACS’s elements.

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Nengjun, Ben, Zhou Pengfei, Oleksandr Labartkava, and Mykhailo Samokhin. "A NEW WELDING MATERIAL FOR REGENERATION IN THE WELDING TECHNOLOGY BASED ON NICKEL. ANALYSIS OF THE COMPOSITION AND PROPERTIES OF DEFORMABLE HEAT-RESISTANT HIGH-CHROMIUM NICKEL-BASED ALLOYS FOR WELDED PARTS. ANALYSIS OF EXISTING FUELLING STATIONS TYPES AND VEHICLES USING HYDROGEN, HYDROGEN PRODUCTION AND STORING METHODS." Science Journal Innovation Technologies Transfer, no. 2019-1 (February 2, 2019): 43–48. http://dx.doi.org/10.36381/iamsti.1.2019.43-48.

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This work involves an analysis of high-chromium high-temperature deformable wieldable nickel alloys for use in GTE repair assemblies. It is shown that the alloys EP868 (VZh98) and Haynes 230 can be used in welded assemblies with an operating temperature of 800-1100 °C. The alloys Nimonic 81, Nimonic 91, IN 935, IN 939, and Nicrotan 2100 GT also have a high potential for use in welded assemblies. They are characterized by a combination of good weldability, high-temperature strength, and resistance to scaling. There have been conducted studies on high-temperature salt corrosion of model nickel alloys. They allowed establishing the patterns of the impact of base metal alloying with chromium, aluminum, titanium, cobalt, tungsten, molybdenum, niobium, tantalum and rare earth metals on the critical temperature of the start of salt corrosion Tcor and the alloy mass loss. It has been established that alloys with a moderate concentration (13-16%) of chromium can possess satisfactory hightemperature corrosion resistance (HTC resistance) under the operating conditions of ship GTE. The HTC resistance of CrAl-Ti alloys improves upon reaching the ratio Ti/Al ˃ 1. Meanwhile, the ratio Ti/Al ˂ 1 promotes the formation of corrosion products with low protective properties. The positive effect of tantalum on the HTC resistance of alloys is manifested at higher test temperatures than that of titanium, and the total content of molybdenum and tungsten in alloys is limited by the condition 8Mo2 – 2W2 = 89. The presence of refractory elements stabilizes the strengthening phase and prevents formation of the ɳ-phase. However, their excess promotes formation of the embrittling topologically close packed (TCP) phases and boundary carbides of an unfavorable morphology. Based on the studies of the HTC resistance, there has been identified a class of model high-temperature corrosionresistant nickel alloys with a moderate or high chromium content (30%), Ti/Al ˃ 1, and a balanced content of refractory and rare-earth elements.

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Jianhua, Gu, Henadiy Pavlov, Miлhaylo Pokrovskyi, Andriy Obrubov, and Iryna Vinnychenko. "DEVELOPMENT OF A FAST WIRELESS BATTERY CHARGING TECHNOLOGY FOR ACCUMULATORS USED IN CLEAN ENERGY TRANSPORT VEHICLES. MATHEMATICAL MODEL OF THE RESONANT CONVERTER WITH A SERIES CONNECTION OF THE PRIMARY AND SECONDARY CIRCUIT CAPACITORS AT PULSE-COUNT ADJUSTMENT AND PHASE SHIFT CONTROL." Science Journal Innovation Technologies Transfer, no. 2019-1 (February 2, 2019): 55–60. http://dx.doi.org/10.36381/iamsti.1.2019.55-60.

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The research object is the electromagnetic processes in the semiconductor power converters based on the schemes with circuit commutation and containing resonant circuits of reactive elements and transformers with a small coupling coefficient. The research aim is to develop a technology for a fast wireless battery charging for the use in clean energy vehicles, which would be based on a resonant converter with a pulse-count adjustment with a phase shift control. The latter provides a high energy performance in a wide range of regulation and a low sensitivity to changes in the magnetic system parameters. This is a final report. The report presents the results of the work performed in accordance with the Terms of Reference for the second stage of the scientific and research work. The following theoretical problems have been solved: development of a mathematical model of a series resonant converter with a pulse-count adjustment for contactless inductive energy transmission, which provided a high accuracy for the studies of the electromagnetic processes in the power section of multi-circuit resonant converters for contactless energy transmission, as well as an opportunity to assess the energy parameters of multi-circuit converters at pulse-count adjustment; compilation of mathematical dependencies of the average input and output current values on the number of half-cycles of resonant oscillations during energy transmission to the circuit and energy dissipation, the supply voltage and the resonant circuit’s parameters, which allowed assessing the converter’s energy parameters over a wide control range; compilation of the dependencies of the converter’s output power and coefficient of efficiency on the number of half-cycles of resonant oscillations during energy transmission to the circuit and energy dissipation, on supply voltage and on the resonant circuit’s parameters, which made it possible to evaluate the efficiency of the pulse-count adjustment of resonant converters for contactless energy transmission; realization of a dynamic model of a resonant converter for contactless energy transmission in the form of transfer functions for small disturbances caused by fluctuations in supply voltage, which made it possible to estimate the effect of its instability on the quality of output current stabilization.

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Tianjing, Li, and Sergiy Ryzhkov. "RESEARCH OF SEPARATION GRADIENT AEROSOL TECHNOLOGIES FOR INTENSIFICATION OF HEAT AND MASS TRANSFER PROCESSES IN SYSTEMS OF HIGHLY TURBULENT DISPERSED BIPHASIC FLOWS. USE OF AEROSOL GRADIENT TECHNOLOGIES IN SEPARATION EQUIPMENT FOR SHIPBUILDING AND MARINE INFRASTRUCTURE." Science Journal Innovation Technologies Transfer, no. 2019-1 (February 2, 2019): 61–68. http://dx.doi.org/10.36381/iamsti.1.2019.61-68.

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A new approach to ensure high level of resource and environmental safety for shipbuilding and marine infrastructure through the use of technology in aerosol gradient separation equipment was developed. A wide range of theoretical and experimental studies which allowed working out aerosol gradient technologies using gradient fields of speed, pulsation, temperature, pressure, acoustic vibrations and the schemes of complex clearing intensification was carried out. On the basis of developed technologies a wide range of resource-saving and environmental equipment for shipbuilding and marine infrastructure was designed and implemented.

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Samokhin, Mykhailo. "CRACKABILITY AT WELDING AND SURFACING DUE TO HIGH-TEMPERATURE ALLOY CASTINGSI NFLUENCE OF THE STRUCTURE." Science Journal Innovation Technologies Transfer, no. 2019-1 (February 2, 2019): 69–76. http://dx.doi.org/10.36381/iamsti.1.2019.69-76.

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The influence of the structure of casting high-temperature nickel alloys on their crack resistance at welding has been studied. It has been shown that crack formation in the weld-adjacent zone is promoted by the presence of lamellar precipitates of the σ-phase, large colonies and eutectic films of the γ΄-phase, carbides, and topologically close-packed phases on the grain boundaries, as well as the heterogeneity of distribution of the liquating elements. Homogenization heat treatment of the base metal before welding provides the maximum level of crack resistance and heat resistance of the joints. It is established that the ratio of Тc.d.γ΄, Teut. and Ts has a great influence on the formation of a ductile metal layer in the weld-adjacent zone of the cast workpiece, which improves its crack resistance at surfacing and welding. To prevent crack formation during welding of alloys with Teut. (Ts) < Тc.d.γ΄, it is necessary to apply new filler alloys with a zirconium-containing eutectic phase.

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Serbin, Sergey, and Аnna Mostipanenko. "INFLUENCE OF MODE AND GEOMETRIC CHRATERISTICS ON HIGHT-FREQUENCY INDUCTIVE PLASMA TORCH WITH REVERSE VORTEX FLOW." Science Journal Innovation Technologies Transfer, no. 2019-1 (February 2, 2019): 77–82. http://dx.doi.org/10.36381/iamsti.1.2019.77-82.

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The analysis of aerodynamic and heat structure of flow in high-frequency inductive plasma torch has been carried out. The range of plasma torch power is measured in dozens of kilowatts. The numerical simulation methods of the turbulent flow in the plasma torch affected by high frequency electromagnetic field without considering the chemical kinetics are used during the research. The data of temperature field and induced current density in the plasma torch depending on current amperage and frequency are obtained. Also, these data are obtained depending on the flow scheme in the operated on argon and air plasma torches. The inductive plasma torches can be applied to solve a wide range of tasks such as activation of coal-dust mixture with its further gasification, coating process for the stabilization of combustion processes as well as for the recycling processes at the mobile seaport recycling complexes. The calculations demonstrated convincingly the advantage of the operation of plasma torches with reverse vortex flow over plasma torches with “direct” vortex flow. Moreover the obtained data allow executing the assessment of thermal efficiency of inductive plasma jet and obtaining its optimal operational modes.

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Chunyang, Wu, FU Jiajia, and Wang Yao. "Experimental study on flexural property of self-compacting concrete beams with discontinuous graded recycled coarse aggregate." Science Journal Innovation Technologies Transfer, no. 2020-1 (September 28, 2020): 10–15. http://dx.doi.org/10.36381/iamsti.1.2020.10-15.

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Experimental study on the flexural property of self-compacting recycled concrete (SCRC) beams with discontinuous graded recycled coarse aggregate is carried out with different replacement ratio of recycled aggregate and concrete grade. The similarities and differences on the failure modes between 4 SCRC beams and 2 normal beams were discussed. According to various replacement ratio of recycled aggregate and concrete grade，the influence on the carrying capacity，cracking ability，etc. of SCRC beams with discontinuous graded recycled coarse aggregate was also analysed. The results show that the failure modes, cracks of pure bend of SCRC beams and normal ones are similar. The vertical crack width of SCRC beams are bigger than the normal beams. There are small cracks in the shear bending section. The ultimate strength decrease slightly and the calculation formulas of current design standard can be used of flexural members which are made of SCRC.

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33

DAOZHENG, QI, GU CONG, FU JIAJIA, and WANG YAO. "Research on microstructure properties of clay-sand mixtures studied by ipp and mip methods." Science Journal Innovation Technologies Transfer, no. 2020-1 (September 20, 2020): 16–23. http://dx.doi.org/10.36381/iamsti.1.2020.16-23.

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The clay-sand mixtures with diferent partcle sizes were prepared to investgate partcle and pore characteristcs. The microstructure characteristcs of the sand-clay mixtures were studied by the Mercury Intrusion Porosimetry (MIP) test and Scanning Electron Microscopy (SEM). Image-Pro Plus (IPP) image processing sofware was used to quantfy SEM images which investgated the micro-mechanism of structural evoluton of mixtures under diferent gradatons. The research results indicate that the units of mixtures develop from platelets and honeycomb to agglomerated and granular with the increase of sand content. The contact between partcles transits from face-face contacts to edge-face and pointface contacts. This artcle evaluated the fractal characteristc of partcle and pore structure based on the fractal theory. With the increase Circularity of the partcles, the ordered arrangement of the partcles in the mixed soil is further reduced. In general, the distributon of pores changes from intergranular pores to pores in aggregate, which provides a theoretcal basis for further study on the micro-macro correlaton of mixtures.

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34

HUILIN, XU, CHEN HUIHUI, ZHOU WEI, and FU JIAJIA. "TIDAL FLATS DEVELOPMENT MODEL OF COASTAL AREAS —A CASE STUDY OF YANCHENG CHINA." Science Journal Innovation Technologies Transfer, no. 2020-1 (September 28, 2020): 25–28. http://dx.doi.org/10.36381/iamsti.1.2020.25-28.

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Tidal fats resources is an important resource in coastal areas of China, which shows a trend of dynamic growth. Ratonal development and efectve utlizaton of tdal fats resources can alleviate the contradicton between more people and less land in China, and is of great signifcance to the development of coastal economy and the protecton of ecological environment in China. Taking Yancheng Tidal Flats of Coastal Areas as an example, analyzes the present situaton of development and utlizaton and the existng problems at the present stage. Relying on the existng industrial foundaton, this paper puts forward the development and utlizaton model of strengthening the constructon of port-neighboring industry, towns and ecological leisure tourism on the basis of modern agriculture

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35

RYZHKOV, SERGIY. "PROBABLE ESTIMATION OF FRACTIONAL EFFICIENCY OF AEROSOLS COLLECTION IN THE BOUNDARY LAYERS OF MULTIPURPOSE SURFACES IN POWER PLANT." Science Journal Innovation Technologies Transfer, no. 2020-1 (September 28, 2020): 41–46. http://dx.doi.org/10.36381/iamsti.1.2020.41-46.

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36

Tianjing, Li, Boris Tymoshevskyy, Yuriy Halynkin, Oleksandr Tarasenko, Oleksandr Cherednychenko, Dmytro Kostenko, Andriy Proskurin, and Dmytro Dovgan. "Concept of the autonomous hydrogen fuelling station based on photovoltaic and metal-hydride technologies for fuel cell elecric vehicle. Analysis of existing fuelling stations types and vehicles using hydrogen, hydrogen production and storing methods." Science Journal Innovation Technologies Transfer, no. 2019-2 (May 5, 2019): 29–35. http://dx.doi.org/10.36381/iamsti.2.2019.29-35.

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At present time internal combustion engines (ICE) are the most spread as main and auxiliary ICE for vehicles, vessels, power generation, etc. Their application is associated with low energy efficiency, negative impact on the environment due to high emissions of harmful substances and the use of oil fuels. The vehicles with electric motors are alternative upon to existing ones. There are two modern concepts of the electric vehicles: battery electric vehicles and electric vehicles with fuel cells. The main advantage of the battery electric vehicles is the developed infrastructure of power grids and charging stations, but the charging time is too prolonged (from 20 minutes in the fast charging mode and up to 8…10 hours. Unfortunately the fast mode significantly reduces life cycle of the electric batteries. One of the advanced alternatives is concept of the fuel cell and hydrogen powered vehicles. It exist some problems which limit its wide implementation. There are the following: high cost of hydrogen production, insufficient amount of electricity production and transmission capacity of electric networks for mass charging of electric vehicles. These problems can be solved by creation of the complexes for local hydrogen production by water electrolysis on the base of photovoltaic panels, hydrogen purification and compression on the base of metal-hydride technologies and hydrogen storage in ultra-light-weight high pressure thanks on the base of reinforced with carbon nanotubes or composite materials. Implementation of this concept will allow to get rid of disadvantages which are inherent in vehicles with electrical batteries. The most of these are the following: high mass and cost, limited run distance and long charging time, short life cycle and recycling batteries pollution. The charging duration of hydrogen high pressure tanks is 5...15 min and is comparable with the ICE diesel/gasoline fueling terms and conditions. One of the main obstacles to expanding vehicles on fuel cells is the deficit of hydrogen and its filling stations. At present it is known a number of solutions for the creation of hydrogen fueling. However, today there is no single standard solution for hydrogen charging. Until today, vehicles running on hydrogen (both fuel cells and equipped with ICE that consume hydrogen), several options for its storage are used. There are high pressure tanks with hydrogen gas compressed at 35…70 MPa. Judging by the vehicles technologies and concepts the combination of fuel cells with tanks at 70 MPa will be the most common variant of hydrogen technology promotion in the coming years. In connection with the variety of hydrogen storage options on board vehicles, it is actual to develop autonomous fueling stations with photovoltaic panels for electricity production with following hydrogen production by electrolysis, hydrogen purification and compression by metal-hydride technology and hydrogen storage in super high pressure tanks or metalhydride tanks with the possibility of hydrogen charging at different pressures from 35 MPa up to 150 MPa.

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37

Pengfei, Zhou, Oleksiy Kozlov, Oleksandr Gerasin, and Galyna Kondratenko. "Development of computerized monitoring and control system of the mobile robot’s positioning on large ferromagnetic surfaces based on intelligent techniques. Thesis and study of the mathematical model of a caterpillar mobile robot for vertical movement." Science Journal Innovation Technologies Transfer, no. 2019-2 (May 5, 2019): 36–45. http://dx.doi.org/10.36381/iamsti.2.2019.36-45.

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The article considers the synthesis and study of a mathematical model of a caterpillar mobile robot (MR) with separate main clamping magnets for moving and performing specified technological operations along inclined and vertical ferromagnetic surfaces. The authors have developed the mathematical models of MR's individual elements and the robot as a whole, taking into account the basic features of its structural design. The resulting mathematical model allows studying the MR’s behavior in different production conditions under spatial motion on an inclined surface and can be applied for further synthesis of the automatic control system for positioning such robots.

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38

Nengjun, Ben, Oleksandr Labartkava, and Mykhailo Samokhin. "A NEW WELDING MATERIAL FOR REGENERATION IN THE WELDING TECHNOLOGY BASED ON NICKEL. PRINCIPLES OF DOPING OF HIGH-TEMPERATURE NICKEL ALLOYS RESISTANT TO HIGH-TEMPERATURE CORROSION." Science Journal Innovation Technologies Transfer, no. 2019-2 (May 5, 2019): 49–55. http://dx.doi.org/10.36381/iamsti.2.2019.49-55.

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This work involves an analysis of high-chromium high-temperature deformable wieldable nickel alloys for use in GTE repair assemblies. It is shown that the alloys EP868 (VZh98) and Haynes 230 can be used in welded assemblies with an operating temperature of 800-1100 °C. The alloys Nimonic 81, Nimonic 91, IN 935, IN 939, and Nicrotan 2100 GT also have a high potential for use in welded assemblies. They are characterized by a combination of good weldability, high-temperature strength, and resistance to scaling. There have been conducted studies on high-temperature salt corrosion of model nickel alloys. They allowed establishing the patterns of the impact of base metal alloying with chromium, aluminum, titanium, cobalt, tungsten, molybdenum, niobium, tantalum and rare earth metals on the critical temperature of the start of salt corrosion Tcor and the alloy mass loss. It has been established that alloys with a moderate concentration (13-16%) of chromium can possess satisfactory hightemperature corrosion resistance (HTC resistance) under the operating conditions of ship GTE. The HTC resistance of CrAl-Ti alloys improves upon reaching the ratio Ti/Al ˃ 1. Meanwhile, the ratio Ti/Al ˂ 1 promotes the formation of corrosion products with low protective properties. The positive effect of tantalum on the HTC resistance of alloys is manifested at higher test temperatures than that of titanium, and the total content of molybdenum and tungsten in alloys is limited by the condition 8Mo2 – 2W2 = 89. The presence of refractory elements stabilizes the strengthening phase and prevents formation of the ɳ-phase. However, their excess promotes formation of the embrittling topologically close packed (TCP) phases and boundary carbides of an unfavorable morphology. Based on the studies of the HTC resistance, there has been identified a class of model high-temperature corrosionresistant nickel alloys with a moderate or high chromium content (30%), Ti/Al ˃ 1, and a balanced content of refractory and rare-earth elements.

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39

Weidong, Hui, Henadiy Pavlov, Pokrovskyi Mykhailo, Andriy Obrubov, and Iryna Vinnychenko. "DEVELOPMENT OF A FAST WIRELESS BATTERY CHARGING TECHNOLOGY FOR ACCUMULATORS USED IN CLEAN ENERGY TRANSPORT VEHICLES. ANALYSIS OF THE CHARACTERISTICS OF THE RESONANT CONVERTER FOR CONTACTLESS INDUCTIVE ENERGY TRANSMISSION." Science Journal Innovation Technologies Transfer, no. 2019-2 (May 5, 2019): 62–68. http://dx.doi.org/10.36381/iamsti.2.2019.62-68.

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The research object is the electromagnetic processes in the semiconductor power converters based on the schemes with circuit commutation and containing resonant circuits of reactive elements and transformers with a small coupling coefficient. The research aim is to develop a technology for a fast wireless battery charging for the use in clean energy vehicles, which would be based on a resonant converter with a pulse-count adjustment with a phase shift control. The latter provides a high energy performance in a wide range of regulation and a low sensitivity to changes in the magnetic system parameters. This is a final report. The report presents the results of the work performed in accordance with the Terms of Reference for the second stage of the scientific and research work. The following theoretical problems have been solved: development of a mathematical model of a series resonant converter with a pulse-count adjustment for contactless inductive energy transmission, which provided a high accuracy for the studies of the electromagnetic processes in the power section of multi-circuit resonant converters for contactless energy transmission, as well as an opportunity to assess the energy parameters of multi-circuit converters at pulse-count adjustment; compilation of mathematical dependencies of the average input and output current values on the number of half-cycles of resonant oscillations during energy transmission to the circuit and energy dissipation, the supply voltage and the resonant circuit’s parameters, which allowed assessing the converter’s energy parameters over a wide control range; compilation of the dependencies of the converter’s output power and coefficient of efficiency on the number of half-cycles of resonant oscillations during energy transmission to the circuit and energy dissipation, on supply voltage and on the resonant circuit’s parameters, which made it possible to evaluate the efficiency of the pulse-count adjustment of resonant converters for contactless energy transmission; realization of a dynamic model of a resonant converter for contactless energy transmission in the form of transfer functions for small disturbances caused by fluctuations in supply voltage, which made it possible to estimate the effect of its instability on the quality of output current stabilization.

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40

Pengfei, Zhou, and Sergiy Ryzhkov. "RESEARCH OF SEPARATION GRADIENT AEROSOL TECHNOLOGIES FOR INTENSIFICATION OF HEAT AND MASS TRANSFER PROCESSES IN SYSTEMS OF HIGHLY TURBULENT DISPERSED BIPHASIC FLOWS. DEVELOPMENT OF SHIP SYSTEM FOR AIR FURIFICATION FROM DROPLET MOISTURE." Science Journal Innovation Technologies Transfer, no. 2019-2 (May 5, 2019): 70–85. http://dx.doi.org/10.36381/iamsti.2.2019.70-85.

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The study of gas dynamics and deposition coefficients of the separating profile has been performed. The three-dimensional model of working channels of the ship systems for air purification from droplet moisture is developed. The distribution of velocity, static pressure, dynamic pressure, kinetic energy of turbulence, and deposition coefficients for the flow rates of 5, 10, 15, 20 m/s in separating profiles with the radii of 5, 10, 15, 20, 25 mm. The droplet moisture deposition coefficient is 99.9 %. Designs of the ship systems for air purification from droplet moisture are developed for the air flow ranging from 20 to 2000 m3/hour.

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41

Serbin, Sergey. "THERMO ACOUSTIC PROCESSES IN LOW EMISSION COMBUSTION CHAMBER OF GAS TURBINE ENGINE CAPACITY 25 MW." Science Journal Innovation Technologies Transfer, no. 2019-2 (May 5, 2019): 86–90. http://dx.doi.org/10.36381/iamsti.2.2019.86-90.

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The appliance of modern tools of the computational fluid dynamics for the investigation of the pulsation processes in the combustion chamber caused by the design features of flame tubes and aerodynamic interaction compressor, combustor and turbine is discussed. The aim of the research is to investigate and forecast the non-stationary processes in the gas turbine combustion chambers. The results of the numerical experiments which were carried out using three-dimensional mathematical models in gaseous fuels combustion chambers reflect sufficiently the physical and chemical processes of the unsteady combustion and can be recommended to optimize the geometrical and operational parameters of the low-emission combustion chamber. The appliance of such mathematical models are reasonable for the development of new samples of combustors which operate at the lean air-fuel mixture as well as for the modernization of the existing chambers with the aim to develop the constructive measures aimed at reducing the probability of the occurrence of the pulsation combustion modes. Keywords: gas turbine engine, combustor, turbulent combustion, pulsation combustion, numerical methods, mathematical simulation.

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42

Daozheng, Qi, Gu Cong, Fu Jiajia, and Wang Yao. "Experimental study on the strength of silty soft soil in beach with polypropylene fiber reinforcement." Science Journal Innovation Technologies Transfer, no. 2020-2 (September 28, 2020): 10–17. http://dx.doi.org/10.36381/iamsti.2.2020.10-17.

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The effects of polypropylene fiber reinforcement on shear strength and unconfined compressive strength of silty soft soil in tidal flats were studied. Through shear test and unconfined compression test, Experimental study was conducted on silty soft soil of allene fiber reinforced beach with 0~0.6% different mass content and 3 ~18m different length. The failure process and mechanism of fiber reinforced soil samples were also discussed. The test results show that: Shear strength (cohesion and internal friction Angle) and unconfined compressive strength increased rapidly in the early stage with the increase of fiber content, and gradually decreased after reaching the peak at a certain content. In this test, the optimal fiber length corresponding to shear strength is 9mm. When the content is less than 0.6%, the optimal content of cohesion is about 0.2%, and the optimal content corresponding to the Angle of internal friction is between 0.2% and 0.3%. Within the range of 18mm fiber length in the experimental study, unconfined compressive strength increased with the increase of fiber length, and the optimal fiber content corresponding to unconfined compressive strength was 0.2%. The main effects of polypropylene fiber reinforcement on soil cohesion and unconfined compressive strength are not obvious.

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43

BINGJIAN, WANG, ZHANG KAI, and GU QIANG. "Shear distribution of CBSF under far-field strong earthquakes." Science Journal Innovation Technologies Transfer, no. 2020-2 (September 28, 2020): 18–29. http://dx.doi.org/10.36381/iamsti.2.2020.18-29.

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Six chevron braced steel frames are studied using elastc-plastc tme history analysis when sufered from farfault major earthquakes. According to the structure of story shear distributon curve, proposes a new model which can be used to design CBSF structure story shear distributon patern, with the story shear distributon paterns and elastcplastc tme history analysis results contrast, indicated this model has higher accuracy; Discusses the structure feature, the ground moton characteristcs of the infuence of story shear distributon.

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44

RYZHKOV, SERGIY. "Problems of purification intensification of power plants in multiphase dispersed media and methods of their solution." Science Journal Innovation Technologies Transfer, no. 2020-2 (September 28, 2020): 45–54. http://dx.doi.org/10.36381/iamsti.2.2020.45-54.

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The scientfc and technical problems of the power plants improvement have been systematzed. The urgency of the problem of the power plants purifcaton in the multphase dispersed media is proved. The main purifcaton methods are analyzed, and previously unstudied pieces of problem of these processes intensifcaton are identfed. The task for the calculatons of the scheme of complex intensifcaton of the ultraturbophoretc transferal within the combined (internal and external) problem is set. The unstructured grid technology for the theoretcal calculatons of the pulsaton ultrasonic partcles depositon in the multpurpose grid coagulator is suggested and implemented. The aim of work is to develop the directons of the purifcaton intensifcaton of the dispersed multphase fows on the basis of the study results analysis. These directons are to be developed to design the technical equipment which ensures the intensifcaton of energy conservaton and environmental cleanliness of the power plants. The processes of the transferal of the fnely-dispersed phase by means of the ultrasonic and turbophoretc powers in the two-phase gas media of the power plants are the subject of the study. The scheme of complex intensifcaton of the ultraturbophoretc transferal of the micropartcles of partcles is developed within the «the inital fow secton – ultraturbophoretc grid coagulator» purifcaton system on the basis of the performed analysis of physical and mathematcal model of the process. The principles of intensifcaton of the ultraturbophoretc transferal and fnely-dispersed partcles depositon are developed. These principles are reduced to the usage of the energy potental of the dispersed two-phase media to depose the partcles; to the creaton of the acoustc vibratons gradients in the wall-adjacent areas at the surface of the channels and in the fow volume; to the generaton of turbulent pulsatons by the bodies of depositon of the multfunctonal purpose.

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45

Po, Wu, Boris Tymoshevskyy, Yuriy Halynkin, Oleksandr Tarasenko, Oleksandr Cherednychenko, Dmytro Kostenko, Yuriy Proskurin, and Dmytro Dovgan. "CONCEPT OF THE AUTONOMOUS HYDROGEN FUELLING STATION BASED ON PHOTOVOLTAIC AND METAL-HYDRIDE TECHNOLOGIES FOR FUEL CELL ELECRIC VEHICLE. DEVELOPMENT OF A GENERAL CONCEPT FOR AN AUTONOMOUS HYDROGEN FUELLING STATION WITH METAL HYDRIDE COMPRESSORS FOR VEHICLES ON FUEL CELLS." Science Journal Innovation Technologies Transfer, no. 2019-3 (July 7, 2019): 29–39. http://dx.doi.org/10.36381/iamsti.3.2019.29-39.

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At present time internal combustion engines (ICE) are the most spread as main and auxiliary ICE for vehicles, vessels, power generation, etc. Their application is associated with low energy efficiency, negative impact on the environment due to high emissions of harmful substances and the use of oil fuels. The vehicles with electric motors are alternative upon to existing ones. There are two modern concepts of the electric vehicles: battery electric vehicles and electric vehicles with fuel cells. The main advantage of the battery electric vehicles is the developed infrastructure of power grids and charging stations, but the charging time is too prolonged (from 20 minutes in the fast charging mode and up to 8…10 hours. Unfortunately the fast mode significantly reduces life cycle of the electric batteries. One of the advanced alternatives is concept of the fuel cell and hydrogen powered vehicles. It exist some problems which limit its wide implementation. There are the following: high cost of hydrogen production, insufficient amount of electricity production and transmission capacity of electric networks for mass charging of electric vehicles. These problems can be solved by creation of the complexes for local hydrogen production by water electrolysis on the base of photovoltaic panels, hydrogen purification and compression on the base of metal-hydride technologies and hydrogen storage in ultra-light-weight high pressure thanks on the base of reinforced with carbon nanotubes or composite materials. Implementation of this concept will allow to get rid of disadvantages which are inherent in vehicles with electrical batteries. The most of these are the following: high mass and cost, limited run distance and long charging time, short life cycle and recycling batteries pollution. The charging duration of hydrogen high pressure tanks is 5...15 min and is comparable with the ICE diesel/gasoline fueling terms and conditions. One of the main obstacles to expanding vehicles on fuel cells is the deficit of hydrogen and its filling stations. At present it is known a number of solutions for the creation of hydrogen fueling. However, today there is no single standard solution for hydrogen charging. Until today, vehicles running on hydrogen (both fuel cells and equipped with ICE that consume hydrogen), several options for its storage are used. There are high pressure tanks with hydrogen gas compressed at 35…70 MPa. Judging by the vehicles technologies and concepts the combination of fuel cells with tanks at 70 MPa will be the most common variant of hydrogen technology promotion in the coming years. In connection with the variety of hydrogen storage options on board vehicles, it is actual to develop autonomous fueling stations with photovoltaic panels for electricity production with following hydrogen production by electrolysis, hydrogen purification and compression by metal-hydride technology and hydrogen storage in super high pressure tanks or metalhydride tanks with the possibility of hydrogen charging at different pressures from 35 MPa up to 150 MPa.

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46

Guojun, Yan, Oleksiy Kozlov, Oleksandr Gerasin, and Galyna Kondratenko. "DEVELOPMENT OF COMPUTERIZED MONITORING AND CONTROL SYSTEM OF THE MOBILE ROBOT’S POSITIONING ON LARGE FERROMAGNETIC SURFACES BASED ON INTELLIGENT TECHNIQUES. AUTOMATION OF THE MONITORING AND CONTROL PROCESSES OF MOBILE ROBOT FOR PROCESSING OF LARGE INCLINED SURFACES." Science Journal Innovation Technologies Transfer, no. 2019-3 (July 7, 2019): 41–48. http://dx.doi.org/10.36381/iamsti.3.2019.41-48.

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The article renders the special features of the design of a tracked mobile robot (MR) for moving over inclined ferromagnetic surfaces while performing specified technological operations. There is conducted a synthesis of the functional structure and selective technological parameters (such as control coordinates) of the computerized monitoring and control system (CMCS) intended for use with this MR. Application of the CMCS with the proposed functional structure allows substantially increasing the accuracy of the MR monitoring and control, which in turn provides for a considerable enhancement in the quality and economic efficiency of the operations on processing of large ferromagnetic surfaces.

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47

Nengjun, Ben, Oleksandr Labartkava, and Mykhailo Samokhin. "A NEW WELDING MATERIAL FOR REGENERATION IN THE WELDING TECHNOLOGY BASED ON NICKEL. DEVELOPMENT OF A NEW HIGH-TEMPERATURE AND CORROSION-RESISTANT WELDING MATERIAL FOR THE REGENERATION OF DEFECTS IN HNA CASTINGS. ANALYSIS OF EXISTING FUELLING STATIONS TYPES AND VEHICLES USING HYDROGEN, HYDROGEN PRODUCTION AND STORING METHODS." Science Journal Innovation Technologies Transfer, no. 2019-3 (July 7, 2019): 52–60. http://dx.doi.org/10.36381/iamsti.3.2019.52-60.

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This work involves an analysis of high-chromium high-temperature deformable wieldable nickel alloys for use in GTE repair assemblies. It is shown that the alloys EP868 (VZh98) and Haynes 230 can be used in welded assemblies with an operating temperature of 800-1100 °C. The alloys Nimonic 81, Nimonic 91, IN 935, IN 939, and Nicrotan 2100 GT also have a high potential for use in welded assemblies. They are characterized by a combination of good weldability, high-temperature strength, and resistance to scaling. There have been conducted studies on high-temperature salt corrosion of model nickel alloys. They allowed establishing the patterns of the impact of base metal alloying with chromium, aluminum, titanium, cobalt, tungsten, molybdenum, niobium, tantalum and rare earth metals on the critical temperature of the start of salt corrosion Tcor and the alloy mass loss. It has been established that alloys with a moderate concentration (13-16%) of chromium can possess satisfactory hightemperature corrosion resistance (HTC resistance) under the operating conditions of ship GTE. The HTC resistance of CrAl-Ti alloys improves upon reaching the ratio Ti/Al ˃ 1. Meanwhile, the ratio Ti/Al ˂ 1 promotes the formation of corrosion products with low protective properties. The positive effect of tantalum on the HTC resistance of alloys is manifested at higher test temperatures than that of titanium, and the total content of molybdenum and tungsten in alloys is limited by the condition 8Mo2 – 2W2 = 89. The presence of refractory elements stabilizes the strengthening phase and prevents formation of the ɳ-phase. However, their excess promotes formation of the embrittling topologically close packed (TCP) phases and boundary carbides of an unfavorable morphology. Based on the studies of the HTC resistance, there has been identified a class of model high-temperature corrosionresistant nickel alloys with a moderate or high chromium content (30%), Ti/Al ˃ 1, and a balanced content of refractory and rare-earth elements.

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48

Qi, Gu, Henadiy Pavlov, Mykhailo Pokrovskyi, Andriy Obrubov, and Iryna Vinnychenko. "DEVELOPMENT OF A FAST WIRELESS BATTERY CHARGING TECHNOLOGY FOR ACCUMULATORS USED IN CLEAN ENERGY TRANSPORT VEHICLES. CHARACTERISTICS OF THE RESONANT CONVERTER FOR CONTACTLESS INDUCTIVE ENERGY TRANSMISSION." Science Journal Innovation Technologies Transfer, no. 2019-3 (July 7, 2019): 67–74. http://dx.doi.org/10.36381/iamsti.3.2019.67-74.

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Abstract:

The research object is the electromagnetic processes in the semiconductor power converters based on the schemes with circuit commutation and containing resonant circuits of reactive elements and transformers with a small coupling coefficient. The research aim is to develop a technology for a fast wireless battery charging for the use in clean energy vehicles, which would be based on a resonant converter with a pulse-count adjustment with a phase shift control. The latter provides a high energy performance in a wide range of regulation and a low sensitivity to changes in the magnetic system parameters. This is a final report. The report presents the results of the work performed in accordance with the Terms of Reference for the second stage of the scientific and research work. The following theoretical problems have been solved: development of a mathematical model of a series resonant converter with a pulse-count adjustment for contactless inductive energy transmission, which provided a high accuracy for the studies of the electromagnetic processes in the power section of multi-circuit resonant converters for contactless energy transmission, as well as an opportunity to assess the energy parameters of multi-circuit converters at pulse-count adjustment; compilation of mathematical dependencies of the average input and output current values on the number of half-cycles of resonant oscillations during energy transmission to the circuit and energy dissipation, the supply voltage and the resonant circuit’s parameters, which allowed assessing the converter’s energy parameters over a wide control range; compilation of the dependencies of the converter’s output power and coefficient of efficiency on the number of half-cycles of resonant oscillations during energy transmission to the circuit and energy dissipation, on supply voltage and on the resonant circuit’s parameters, which made it possible to evaluate the efficiency of the pulse-count adjustment of resonant converters for contactless energy transmission; realization of a dynamic model of a resonant converter for contactless energy transmission in the form of transfer functions for small disturbances caused by fluctuations in supply voltage, which made it possible to estimate the effect of its instability on the quality of output current stabilization.

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49

Miao, Wang, and Sergiy Ryzhkov. "RESEARCH OF SEPARATION GRADIENT AEROSOL TECHNOLOGIES FOR INTENSIFICATION OF HEAT AND MASS TRANSFER PROCESSES IN SYSTEMS OF HIGHLY TURBULENT DISPERSED BIPHASIC FLOWS. EMPLOYING THE SEPARATION GRADIENT AEROSOL TECHNOLOGIES FOR DESIGNING THE OIL SEPARATORS OF VENTING SYSTEMS IN GAS TURBINE ENGINES (G=200 m3/h)." Science Journal Innovation Technologies Transfer, no. 2019-3 (July 7, 2019): 75–84. http://dx.doi.org/10.36381/iamsti.3.2019.75-84.

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The aim of present study was to design an oil separator for the venting systems of gas turbine engines at consumption of gaseous medium 200 m3/h. In order to accomplish the objective, we applied separation gradient aerosol technologies, which consider all the forces and effects that influence deposition of the highly dispersed particles. A scientific base is substantiated for the intensification of gradient processes of the transfer of aerosol media in the boundary layers of multifunctional surfaces in the purification of dispersed polyphase flows for developing the technical devices that ensure an increase in energy saving and ecological improvement of power plants. We designed a section-by-section structural scheme and a three-dimensional model of the oil separator in finite elements for the calculation of hydrodynamics and separation. The calculations were conducted of the hydrodynamic situation and particle trajectory in the flow area of an oil separator. Using the calculated distribution of speed in the oil separator at G=100…200 m3/h, it was determined that velocity in the coagulation profile does not exceed 10 m/s. It was established according to the results of static pressure distribution for G=100, 200 m3/h that the pressure differential in the separation coagulators reaches 2.5…3.9 kPa, respectively. Results of the calculation at G=100…200 m3/h demonstrated that the summary pulsation effect from the deposition of highly dispersed particles amounts to 25.1 %. Based on the calculations, we designed the prototype of an oil separator and tested it experimentally on the test bench in the form of an open type wind tunnel. Coefficient of the total effectiveness of purification was determined, which reaches 99.9 %. The modernization of purifiers for capturing the aerosols in different systems of power plants is possible based on the separation gradient aerosol technologies. The studies conducted make it possible to develop in the future a range of separators for gas consumption from 20 to 2000 m3/h.

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50

Lokarev, Valentyn. "PERFORMANCE CHARECTERISTICS FORMULATION OF UNCONVENTIONAL MATHEMATICAL ASYNCHRONOUS ELECTRIC DRIVE." Science Journal Innovation Technologies Transfer, no. 2019-3 (July 7, 2019): 85–91. http://dx.doi.org/10.36381/iamsti.3.2019.85-91.

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Abstract:

A new mathematical formulation of the performance characteristics of asynchronous electric drives, mechanical ω(M) and electromechanical I(M) ones, has been considered. They are widely used in engineering practice and educational process of higher educational institutions when designing and studying industrial electromechanisms. The article aim is to increase the amount of computational tools for the formulation of motor electromagnetic properties, enhance their form and structure in order to improve the accuracy and performance of the computational process. The method of performing the work is a divergence from the conventional mathematical formulation of the performance characteristics of asynchronous electric drives, the search for new more efficient forms in terms of the objectives. The new mathematical formulation of the performance characteristics of asynchronous electric drives is obtained by bringing the known formulas of Kloss and Shubenko to the relative values, replacing the slip with a system value and performing a series of mathematical transformations. At this, the total number of formulas for calculating the performance characteristics doubled. Two groups of formulas were developed: with one independent variable ν(m) and i (m) and with two variables ν(m, i) and i (m, ν). The first group of formulas is independent and self-sufficient. Mechanical ν(m) and electromechanical i (m) characteristics are based on the motor passport data. The formulas for their calculation contain repetitive elements, do not require to involve other characteristics, that determines an effective and productive calculation. The mechanical characteristics can be constructed using the second group of formulas, if electromechanical one is known and vice versa. All the obtained formulas differ from the traditional ones by the uniformity of structure and form and close interaction, so any mechanical characteristics can be constructed by electromechanical and vice versa. As well as the original traditional formulas, the new formulas perfectly describe the working areas of characteristics, but can make significant errors in the starting ranges. In order to eliminate this disadvantage, the correction of the formulas was performed. The basic formulas are used when calculating the working areas, and the corrected ones — at starting ranges. The results of the work can be used in engineering practice and educational process of higher educational institutions when designing and studying industrial electromechanisms.

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Journal articles on the topic 'Iamata'

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