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Journal articles on the topic 'AVIATION 4.0'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Gumenyuk, S. A., S. A. Fedotov, V. I. Potapov, and A. Yu Sysoev. "Experience of air medical teams of the Scientific and Practical Center for Emergency Medical Care of the Moscow City Health Department for 2015—2019." Medicо-Biological and Socio-Psychological Problems of Safety in Emergency Situations, no. 4 (December 13, 2020): 60–68. http://dx.doi.org/10.25016/2541-7487-2020-0-4-60-68.

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Relevance. Due to busy roads of large cities and the resulting slow movement of ambulances with severely affected patients in need of specialized emergency care, new organizational technologies for medical evacuation support as well as modern means of transporting patients to qualified hospitals are required.Intention is to analyze activities of the aviation medical teams of the Scientific and Practical Center for Emergency Medical Care in Moscow in 2015-2019.Methodology. Using the automated information-analytical system “Disaster Medicine of the Moscow City”, activities of aviation medical te

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Stone, Lewis W., Ronald R. Simmons, Heber D. Jones, David J. Carter, and Roger S. Christiansen. "Effects of Chemical Defense Antidotes (Atropine) on Aviator Performance (Simulated Flight and Zero Input Tracking Analyzer)." Proceedings of the Human Factors Society Annual Meeting 30, no. 12 (1986): 1187–91. http://dx.doi.org/10.1177/154193128603001211.

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Army aviation is at serious risk in chemical and biological warfare environments. One of the potential countermeasures for aviators against the chemical threat is the development of antidote and pretreatment drugs. Just as the chemical agent carries the threat of degrading aviator performance, antidote and pretreatment drugs could independently produce problems either alone or in combination with an agent. This paper briefly outlines part of the first phase of a systematic program using controlled, simulated flight conditions and a Zero Input Tracking Analyzer (ZITA) to identify and measure fl

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Galata, Serkan, Yiğit Okur, Ülkü Uzan, et al. "Web Optimization of Compression Ignition Aviation Engine Crankshaft." International Journal of Aerospace Engineering 2022 (September 16, 2022): 1–10. http://dx.doi.org/10.1155/2022/7976691.

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The focus of this study was the weight reduction of crankshaft web regions of an inline 4 cylinder, 250 HP compression ignition engine with a combustion chamber volume of 2499 cm3 intended for use in aircraft. Iteration #0 model was generated by manual reduction of a reference model. According to the results of the analyses, the stresses were compared. Since the increase in stress values of weight reduced model over the reference model exceeded the targeted upper limit of 15.0%, three geometric parameters have been defined, and seven candidate design models have been created by using one, two,

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James, Stuart. "Dictionary of Aviation (2nd edition)2005313David Crocker. Dictionary of Aviation (2nd edition). London: Bloomsbury 2005. 288 pp., ISBN: 0 7475 7219 4 £9.99 Bloomsbury Reference Book." Reference Reviews 19, no. 6 (2005): 40–41. http://dx.doi.org/10.1108/09504120510613319.

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5

ABRAMYAN, K. A. "“IT’S ENOUGH FOR US TO BLOW, AND EVERYTHING WILL FALL APART”. THE AGENT REPORT MADE BY THE SOVIET MILITARY INTELLIGENCE ON THE SOVIET-GERMAN TRADE NEGOTIATIONS, REDEPLOYMENT OF THE UNITS OF THE WEHRMACHT TO ROMANIA, AND THE INTEREST OF THE GERMAN INTELLIGENCE IN THE SOVIET AVIATION. DECEMBER 1940." Historical Archive 17 (2025): 4–9. https://doi.org/10.71053/0869-6322-2025-0-1-4-9.

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Publication, prepared by K.A. Abramyan, contains the agent report made by the Soviet military intelligence on the Soviet-German trade negotiations, redeployment of the units of the Wehrmacht to Romania, and the interest of the German intelligence in the Soviet aviation in December 1940. The document is identified in the Russian State Military Archive.

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Klimov, N. A., M. A. Ershov, V. B. Duksin-Ivanov, and G. A. Makarova. "Development of a new composition and testing of aviation gasoline Avgas 100LL." World of OIL Products the Oil Companies Bulletin 03, no. 03 (2019): 4–11. http://dx.doi.org/10.32758/2071-5951-2019-0-03-4-11.

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7

Dolgova, E. V., and K. S. Lavrova. "APPLICATION OF CYANATE ESTER MATERIALS (review) Part 1. Aviation and space structures." Proceedings of VIAM, no. 4 (2021): 48–60. http://dx.doi.org/10.18577/2307-6046-2021-0-4-48-60.

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The review concerns the major application of materials based on cyanate ester resins in various branches of technology, indicating examples of implementation in modern devices. This article being the first part of the review highlights the cyanate esters implementation in the development of materials for aviation and space technology. The paper presents the most significant properties of polycyanurates in relation to their application. Information about the development of new cyanate ester resin-based composite materials for aircrafts and space shuttles is provided.

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Degtiarev, S. A., M. K. Leontiev, and V. V. Popov. "“Squirrel cage” flexibility in supports of aviation gas turbine engine rotors." VESTNIK of the Samara State Aerospace University, no. 4(46) (December 31, 2014): 52. http://dx.doi.org/10.18287/1998-6629-2014-0-4(46)-52-60.

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Koryagin, N. D., and A. I. Sukhorukov. "MORPHOLOGICAL ANALYSIS OF EDUCATIONAL PROGRAMS IN THE CONTEXT OF INCREASING THE COMPETENCIES OF GRADUATES." World of Transport and Transportation 14, no. 5 (2016): 214–23. http://dx.doi.org/10.30932/1992-3252-2016-14-5-22.

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For the English abstract and full text of the article please see the attached PDF-File (English version follows Russian version).The publication was prepared within the framework of the project No. 15-02-00007, supported by a grant from the Russian Humanitarian Scientific Foundation (RHSF). ABSTRACT The problems of the peculiarities of the structure of main educational programs of the leading higher educational institutions of managerial and economic profile are considered in the context of the gradual increase in information competencies of students. With the help of morphological analysis an

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10

Ospennikova, O. G., A. A. Kozlova, and I. A. Kozlov. "LASER TECHNOLOGY TO REMOVE PAINT COATINGS IN THE PROCESS OF REPAIR AND MAINTENANCE OF AIRCRAFT (review)." Proceedings of VIAM, no. 4 (2021): 110–23. http://dx.doi.org/10.18577/2307-6046-2021-0-4-110-123.

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A number of domestic and foreign publications devoted to research on the possibility of using laser surface treatment technologies for cleaning from dirt, removing paint coatings and preparing the metal surface for subsequent technological operations are considered. The most striking examples of the use of technologies in the foreign aviation industry are given and the high readiness of their implementation in practice is noted. Theoretical information about laser technology is presented and the most progressive directions are highlighted.

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Dvoretskov, R. M., O. S. Volkova, V. N. Radzikovskaya, and V. N. Burova. "Determination of beryllium in modern aviation materials by atomic emission spectrometry with inductively coupled plasma." Proceedings of VIAM, no. 4 (2016): 5. http://dx.doi.org/10.18577/2307-6046-2016-0-4-5-5.

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Kablov, E. N., A. E. Kutyrev, A. I. Vdovin, I. A. Kozlov, and A. N. Afanasyev-Khodykin. "THE RESEARCH OF POSSIBILITY OF GALVANIC CORROSION IN BRAZED CONNECTIONS USED IN AVIATION ENGINE CONSTRUCTION." Aviation Materials and Technologies, no. 4 (2021): 3–13. http://dx.doi.org/10.18577/2713-0193-2021-0-4-3-13.

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The article presents the results of researche of galvanic corrosion possibility of brazed connections of steels 13Сr11Ni2W2MoV and 12Cr18Ni10Тi with use of the solders VPr4 and VPr50, which are used in design of aviation engineering engines. The research was carried out by electrochemical methods. Corrosion currents’ density and contact pairs’ potentials in chloride solutions have been determined. It is determined that 13Сr11Ni2W2MoV steel can be exposed to galvanic corrosion in a place of brazed connection. Thus the greatest danger to it is represented by VPr4 solder. The mechanism of corrosi

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Vasilevich, S. V., E. A. Shaporova, and S. О. Stoyko. "Study of the kinetics of aviation oils thermal conversion under non-isothermal conditions." Proceedings of the National Academy of Sciences of Belarus, Chemical Series 59, no. 4 (2023): 318–33. http://dx.doi.org/10.29235/1561-8331-2023-59-4-318-333.

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The paper discusses the results of a kinetic study of the thermal decomposition of MS-8P, TN-98, and TN-600 aviation oils under conditions of continuous heating at a constant rate of 5 K/min to a temperature of 1 073 K. An integral method was used to describe the reaction mechanism and determine the macrokinetic parameters. It has been established that, from a phenomenological point of view, the average reaction of aviation oils conversion under the experimental conditions corresponds to the reaction model described by the surface-limited reaction equation (MS-8P), the power law (TN-98) and th

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14

Popov, I. P. "COMBINATION OF CIRCULAR MOTIONS IN MACHINES AND MECHANISMS." Frontier materials & technologies, no. 4 (2021): 48–56. http://dx.doi.org/10.18323/2782-4039-2021-4-48-56.

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In technical systems, including aviation and space technology, and in particular, in aircraft transmissions, bearings, orbital systems, helicopter mechanisms, and many others, the combined rotational movements are widespread, and when designing, it is important to understand the nature of joint motion. The paper aimed at the generalization of the principle of the combination of motions in circular movements. The author considered the x'0'y' coordinate system that rotates in the x0y coordinate system without angular acceleration with the velocity ω. The radius of rotation is equal to ρ1. Wherei

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Trysnavirensa, Saniyya Nahda, Setyo Hariyadi Suranto Putro, and Nyaris Pambudiyatno. "The Effect of Triangular Vortex Generator Straight Arrangements on the NACA 0012 Airfoil Using a Smoke Generator." SAINSTECH NUSANTARA 2, no. 1 (2025): 38–52. https://doi.org/10.71225/jstn.v2i1.86.

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Aerodynamics is a fundamental discipline in the field of aviation, as it governs the airflow around an aircraft, enabling lift generation. The design and construction of aircraft wings are critical, as they directly impact the aircraft's stability and lift efficiency. Thus, aerodynamics plays a pivotal role in the performance, functionality, and overall design of aircraft. With advancements in modern aviation, continuous improvements are being made in the design and configuration of wing models. To analyze the aerodynamic characteristics of an aircraft wing, the airflow distribution method is

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Karimova, S. A., L. I. Avdushkina, E. A. Efimova, Т. I. Nizamov, and A. A. Aliyev. "INVESTIGATION OF THE POTENTIAL APPLICATION OF POLYESTERURETHANE COMPOUND TO PROTECT THE MATERIALS OF AVIATION HARDWARE PARTS." Proceedings of VIAM, no. 4 (2015): 10. http://dx.doi.org/10.18577/2307-6046-2015-0-4-10-10.

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17

Barinov, D. Ya, S. Yu Shorstov, M. G. Razmahov, and A. I. Gulyaev. "EXAMINATION OF THERMOPHYSICAL CHARACTERISTICS OF A HEAT-PROTECTIVE MATERIAL BASED ON FIBERGLASS DURING DESTRUCTION." Aviation Materials and Technologies, no. 4 (2021): 91–97. http://dx.doi.org/10.18577/2713-0193-2021-0-4-91-97.

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When designing advanced samples of aviation and rocket and space technology, during the operation of which the temperature on the surface of the material can exceed the temperature of destruction, it is important to have an understanding of the values of thermophysical properties. The work investigates the thermophysical properties of fiberglass in the initial state and after the binder is burned out in a muffle furnace. The temperature dependences of thermal effects, heat capacity, thermal diffusivity and thermal conductivity were determined, density was measured, and thermogravimetric analys

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18

Barbotko, S. L., M. M. Bochenkov, O. S. Volnyj, O. P. Korobeinichev, and A. G. Shmakov. "EVALUATION OF THE EFFECTIVENESS OF THE FIRE RETARDANTS, PROMISING FOR THE CREATION OF NEW POLYMER COMPOSITE MATERIALS INTENDED FOR AVIATION TECHNIQUES." Proceedings of VIAM, no. 2 (2021): 20–29. http://dx.doi.org/10.18577/2307-6046-2021-0-2-20-29.

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Studies have been carried out on the effectiveness of the action of two types of fire retardants – graphene and an organic phosphorus-containing compound DOPO-THPO, introduced into an epoxy resin. The amount of fire retardants introduced was 0; 2 and 4% of the amount of epoxy resin. The efficiency was assessed by the oxygen index method (LOI). It was shown that for this epoxy resin, the introduction of graphene provided an increase in the oxygen index from 21 to 27%, and the introduction of the phosphorus-containing fire retardant DOPO-THPO – from 21 to 23%. With the simultaneous introduction

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19

Kablov, E. N., and V. O. Startsev. "MEASUREMENT AND FORECASTING OF MATERIALS SAMPLES’ TEMPERATURE DURING WEATHERING IN DIFFERENT CLIMATIC ZONES." «Aviation Materials and Technologies», no. 4 (2020): 47–58. http://dx.doi.org/10.18577/2071-9140-2020-0-4-47-58.

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The relation between standard meteorological parameters and surface temperature of samples exposed directly to the sun and in a sheltered environment has been studied using 6–8-year timeframe. The following materials have been used: KMKU-3.150.U0.1 carbon fiber reinforced polymer, KMKS-4.175.Т10 glass fiber reinforced polymer, and D16-AT aluminum alloy substrate with black and white EP-140 epoxy coating . Outdoor weathering has been conducted at Gelendzhik and Moscow testing sites of the All-Russian Institute of Aviation Materials (VIAM). It has been shown that it′s possible to use a multiline

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20

Constantine, Stephen. "Michael Paris, From the Wright Brothers to Top Gun: Aviation, Nationalism and Popular Cinema (Manchester: Manchester University Press, 1995, £40, £12.99 paper). Pp. 218. ISBN 0 7190 4073 6, 0 1790 4074 4." Journal of American Studies 30, no. 2 (1996): 302–3. http://dx.doi.org/10.1017/s0021875800027249.

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21

Kuznetsova, V. А., V. V. Emelyanov, S. A. Marchenko, and А. А. Silaeva. "APPLICATION OF METALPOLYMERIC COMPOSITIONS FOR SEAL OF CASTING DEFECTS AND SURFACE ALIGNMENT ON DETAILS AND PRODUCTS OF AVIATION ENGINEERING." Proceedings of VIAM, no. 4 (2019): 67–75. http://dx.doi.org/10.18577/2307-6046-2019-0-4-67-75.

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22

Arinicheva, O. V., A. V. Malishevsky, and E. V. Vlasov. "AIRCRAFT CREW: RESOURCES OF INTERACTION." World of Transport and Transportation 14, no. 1 (2016): 220–31. http://dx.doi.org/10.30932/1992-3252-2016-14-1-29.

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[For the English abstract and full text of the article please see the attached PDF-File (English version follows Russian version)].ABSTRACT The results of experiments carried out in 2011-2015 with professional pilots and students of St. Petersburg State University of Civil Aviation are analyzed. The aim of the study was to test the efficiency of interaction in the two-member crew of the aircraft using a variety of evaluation criteria. In particular, socionic criteria were considered as well as characteristics of individual styles of behavior, and data of indirect sociometry. Statistical criter

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23

Tarusov, D. V., V. K. Slakaev, G. S. Mutovkin, et al. "Changing the properties of narrow fractions in the process of hydrotreating light coking gas oil." World of petroleum products 04 (2022): 36–41. http://dx.doi.org/10.32758/2782-3040-2022-0-4-36-41.

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Currently, the main products of the delayed coking plant in the Russian Federation (after hydrotreating) are gasoline and diesel fuel summer. The paper presents the results of a study of the properties of narrow fractions of coking gas oil and hydrotreated coking gas oil, which showed the prospect of organizing production based on the coking process of more marginal aviation kerosene and winter diesel fuel. The separation of products into narrow 20 degree fractions was carried out on an automatic distillation unit AUTOMAXX 9100. The dependences of nitrogen, sulfur, aromatics, density, and low-

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Esakkiraj, E. S., S. Suresh, N. Shenbaga Vinayaga Moorthi, M. Krishna Kumar, and S. M. Jenin Ranjith. "Study of Mechanical Behaviour of Stir Cast Aluminium Based Composite Reinforced with Mechanically Ball Milled TiB₂Nano Particles." Advanced Materials Research 984-985 (July 2014): 410–15. http://dx.doi.org/10.4028/www.scientific.net/amr.984-985.410.

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Metal matrix composites possess some glamorous properties like light weight, low density ,high strength-to-density ratio, formable to complex shape, lower manufacturing cost and are used more in commercial, industrial, marine, naval based industrial and are extensively used in automobiles and aerospace like empennage, wings, fuselage in fighter aircraft, bomber, transport, general aviation, rotary aircraft etc. Many researches are done on micro structural metals matrix composites and they result shows that composite of micro structural having good mechanical properties. Instead of using micro

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Bai, Jie, Shun Yuan, and Zhaobin Duan. "Research on the Interference Effects of 5G’s Key Parameters on Radio Altimeters." Aerospace 12, no. 1 (2024): 16. https://doi.org/10.3390/aerospace12010016.

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The 5G frequency band is extremely close to the operating frequency band of radio altimeters (RAs), so an in-depth study of the possible interference of 5G’s key parameters on RAs is especially necessary to ensure aviation safety. In this paper, the interference magnitude of 5G waveforms on an altimeter was measured by simulating the Adjacent Channel Leakage Power Ratio (ACLR) values for different sub-carrier spacing (SCS) and channel bandwidth configurations. Furthermore, interference injection experiments on simulated 5G signals and the interference thresholds of a frequency-modulated contin

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Shankar, Anand, Ashish Kumar, and Vivek Sinha. "Machine Learning approach in the prediction of Fog: An Early Warning System." MAUSAM 75, no. 4 (2024): 1039–50. http://dx.doi.org/10.54302/mausam.v75i4.5919.

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The aviation sector is extremely vulnerable to fog. Thus, accurate fog predictions are essential foraviation sector efficiency, particularly airport management and flight scheduling. Even with numerical weather predictionmodels and guiding systems, fog prediction is challenging. The difficulty of fog prediction is due to the inability to graspthe micro-scale factors that cause fog to form, intensify, augment and dissipate in the boundary layer. This study looks athow well machine learning (ML) tools can predict fog (Visibility <1000 m) and dense fog (Visibility <200 m) at India'sJay Prak

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Rybakova, Lyudmila V., and Natalia V. Neverova. "An exclusive phonological method of teaching a foreign language with a professionally oriented approach." Revista Amazonia Investiga 12, no. 69 (2023): 106–19. http://dx.doi.org/10.34069/ai/2023.69.09.9.

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The relevance of the topic of the article is due to the reassessment of the goals and objectives of professionally oriented language education at the undergraduate level in the light of UNESCO initiatives. The hypothesis: use of the proposed methodology in the course of teaching English with the indicated approach at a technical university can significantly improve pronunciation. The purpose is to determine the effectiveness of the phonological methodology in teaching a foreign language based on a professionally oriented approach. Methodology: pilot experiment, comparison, observation, descrip

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Skorobogatko, D. S., A. N. Golovkov, I. I. Kudinov, and S. I. Kulichkova. "REVISITING THE ECOTOXICITY AND EFFICIENCY OF DIFFERENT CLASSES OF INDUSTRIAL NONIONIC SURFACES USED FOR CLEANING METAL SURFACES IN THE PROCESS OF CAPILLARY CONTROL OF DETAILS OF THE AVIATION TECHNOLOGY (review)." Aviation Materials and Technologies, no. 4 (2021): 98–106. http://dx.doi.org/10.18577/2713-0193-2021-0-4-98-106.

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A review of modern classes of nonionic surfactants used for cleaning metal surfaces is carried out. The following aspects are considered: efficiency of cleaning metal surfaces, ecotoxicity, biodegradability, impact on human health. The most promising class of surfactants – alkyl polyglycosides (APG) – for cleaning metal surfaces, including in the process of capillary control, has been determined. It is noted that APGs have shown high efficiency in removing even such contaminants as denatured protein and burnt corn starch from metal surfaces. In addition, APGs have the highest emulsifying abili

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Yuri, Iftikar Arif, Nur Octasari Lisadi, and Maya Rizki Sari. "Analisis Kinerja Portofolio Saham Perusahaan Pada Sektor Jasa Penerbangan Di Beberapa Negara Asean." Jurnal Ilmiah Akuntansi Kesatuan 9, no. 3 (2022): 563–74. http://dx.doi.org/10.37641/jiakes.v9i3.905.

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The Covid-19 pandemic that occurred in early 2020 in the world resulted in many businesses and companies being affected, handling companies in the aviation sector in ASEAN countries. As an investor who is going to invest, of course, you have to assess how the performance of the stock is, whether it will provide good and profitable returns, because the purpose of investors in investing in the capital market is of course to get a good increase (return). Portfolio performance evaluation is the final stage of the investment management process which aims to assess whether the portfolio that has bee

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Kutzhanov, Magzhan K., Andrei T. Matveev, Andrey V. Bondarev, Igor V. Shchetinin, Anton S. Konopatsky, and Dmitry V. Shtansky. "Structural Synergy of NanoAl2O3/NanoAl Composites with High Thermomechanical Properties and Ductility." Metals 13, no. 10 (2023): 1696. http://dx.doi.org/10.3390/met13101696.

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Achieving a combination of high strength and ductility in metal-based composites is still a difficult task, and it is especially challenging in a wide temperature range. Here, nanoAl2O3/nanoAl composites with high tensile and compressive strength and excellent ductility at 25 and 500 °C were obtained using Al and Al2O3 nanopowders via a combination of high-energy ball milling (HEBM) and spark plasma sintering (SPS). Being about three times lighter than conventional high-strength steel (with a density of 2.7 g/cm3 vs. that of 7.8 g/cm3 for steel), the nanoAl2O3/nanoAl materials demonstrated ten

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Jones, Steve. "Michael Paris. From the Wright Brothers to Top Gun: Aviation, Nationalism, and Popular Cinema. Manchester: Manchester University Press; distributed by St. Martin's Press, New York, N.Y. 1995. Pp. vi, 218. $69.95 cloth, $18.95 paper. ISBN 0-7190-4073-6, ISBN 0-7190-4074-4." Albion 28, no. 4 (1996): 734–35. http://dx.doi.org/10.2307/4052082.

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Malagón, Romina Castillo. "Reconfiguración en la Cadena Global de Valor de la Industria Aeronáutica: Innovar para la Sustentabilidad." European Scientific Journal, ESJ 19, no. 37 (2023): 1. http://dx.doi.org/10.19044/esj.2023.v19n37p1.

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El transporte aéreo fue uno de los más afectados tras el cierre de fronteras a nivel mundial para evitar la propagación del virus SARS-CoV-2, sin embargo, aunque represente un pequeño porcentaje del valor agregado (cerca de 0.3 %), la estrecha relación que mantiene tanto con las cadenas globales de valor aeronáuticas, como con otros sectores como el turismo y el comercio, lo convierte en parte importante de la economía globalizada. A nivel mundial, se han sumado esfuerzos para asegurar el restablecimiento de un sector considerado como estratégico, siendo el plan de recuperación impulsado por l

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Wang, Changhao, Qiyu Zhang, Tiangang Zhang, et al. "Effects of Y2O3 Content on the Microstructure and Tribological Properties of WC-Reinforced Ti-Based Coatings on TC4 Surfaces." Coatings 14, no. 9 (2024): 1110. http://dx.doi.org/10.3390/coatings14091110.

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To extend the safety service life of aviation TC4 alloy, the composite coatings of TC4 + Ni-MoS2 + WC + xY2O3 (x = 0, 1, 2, 3, 4 wt.%) were prepared on TC4 by coaxial powder feeding laser cladding technology. The results showed that all the coatings had the same generated phases which mainly consisted of TiC, Ti2Ni, Ti2S, matrix β-Ti, and unfused residual WC. Y2O3 formed co-dependent growth relationships with TiC, Ti2S, and Ti2Ni. Meanwhile, TiC-Ti2S, TiC-Ti2Ni, and Ti2S-Ti2Ni coherent composite structure phases were effectively synthesized in all the coatings. With the increase in the Y2O3 co

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Breglia, Rudolph, Quang Bui, Donald Burnett, et al. "A 13-Week Dermal Repeat-Dose Neurotoxicity Study of Hydrodesulfurized Kerosene in Rats." International Journal of Toxicology 33, no. 1_suppl (2013): 68S—77S. http://dx.doi.org/10.1177/1091581813514282.

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A 13-week dermal repeat-dose toxicity study was conducted with hydrodesulfurized (HDS) kerosene, a test material that also met the commercial specifications for aviation turbine fuel (jet A). The objectives were to assess the potential for target organ toxicity and neurotoxicity. The HDS kerosene was applied to the shaved backs of Sprague-Dawley CD rats, 12/sex/group, 6 h/d, 5 d/wk in doses of 0 (vehicle control), 165 mg/kg (20% HDS kerosene), 330 mg/kg (40% HDS kerosene), or 495 mg/kg (60% HDS kerosene). Additional rats (12/sex) from the control and the high-dose groups were held without trea

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Wittwer, Philipp, Philipp Roesch, Christian Vogel, et al. "Less Is More: Influence of Cross-Linking Agent Concentration on PFOS Adsorption in Chitosan." Applied Sciences 14, no. 23 (2024): 11145. http://dx.doi.org/10.3390/app142311145.

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As a result of the continuous use of persistent per- and polyfluoroalkyl substances (PFAS), e.g., in aviation firefighting foams, contamination with PFAS has been found in soil, groundwater, and surface water around thousands of industrial and military installations. Due to their harmful (environmental) potential, further dispersion in the environment needs to be stopped, which can be achieved by appropriate absorption materials. In this work, the influence of the cross-linking agent epichlorohydrin (ECH) concentration on the perfluorooctanesulfonic acid (PFOS) adsorption capacity of chitosan

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McLean, Donald. "Airplane Stability and Control: a History of the Technologies that Made Aviation Possible - Second edition. M.J. Abzug and E.E. Larrabee. Cambridge University Press, The Edinburgh Building, Shaftesbury Road, Cambridge CB2 2RU, UK. 2002. 391pp. Illustrated. £60. ISBN 0-521-80992-4." Aeronautical Journal 107, no. 1071 (2003): 275. http://dx.doi.org/10.1017/s0001924000129768.

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Hustenko, Oleksiy, and Inna Khomenko. "Fog and low-level stratus characteristics at the airport of Odesa from surface observations." 59, no. 59 (December 1, 2023): 95–109. http://dx.doi.org/10.26565/2410-7360-2023-59-08.

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Introduction. Fog that limits visibility and low-level stratus represent a significant hazard to aviation especially during takeoff and landing, and also low-level flying of aircrafts, because accidents often occur in reduced visibility conditions and low clouds. Therefore, forecasting fog and low ceilings is one of the most important, but at the same time the most difficult issue, because both phenomena strongly depend on local conditions and unsteady in both time and space. The aim of the study is to obtain the statistical characteristics of low-level stratus and fog at the airport of Odessa

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Cremers, Carsten. "Challenges of Using Fuel Cells to Deliver Aircraft Propulsion Power." ECS Meeting Abstracts MA2023-02, no. 38 (2023): 1856. http://dx.doi.org/10.1149/ma2023-02381856mtgabs.

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Beside sustainable aviation fuels (SAFs), which offer an easy but expensive drop-in solution the use of hydrogen is discussed as an important way to decarbonise air traffic. According to a study performed by McKenzie on behalf of the “Fuel Cell and Hydrogen 2” and “Clean Sky 2” Joint undertakings hydrogen is the economical more viable option for small and medium range aircrafts1. For the smaller aircrafts electric propulsion using fuel cells to deliver the required electric power are the preferred choice from the economic perspective. Operating fuels cell on board of a flying aircraft is howev

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Marushko, Y., and O. Khomych. "FREQUENCY CHARACTERISTICS OF ACOUSTIC FEATURES OF SOUND SIGNALS IN THE LUNGS OF CHILDREN WITH PNEUMONIA USING A NEW ACOUSTIC DIAGNOSTIC DEVICE "TREMBITA-CORONA"." Neonatology, surgery and perinatal medicine 12, no. 4(46) (2023): 59–66. http://dx.doi.org/10.24061/2413-4260.xii.4.46.2022.9.

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Relevance. Community-acquired pneumonia (CAP) is an urgent problem in practical medicine and the main cause of morbidity and mortality in the world. Diagnosing pneumonia is complex and requires a comprehensive study, taking into account many factors. The development of passive diagnostic methods, such as acoustic ones, is especially promising for children, as this approach reduces significantly the level of radiation exposure to an unformed child's body.The aim. To determine the peculiarities of the frequency characteristics of acoustic signals in the lungs of children with pneumonia using the

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Singh, Anubhav, and Anup Barai. "Direction-Dependence in Li-Ion Battery Diagnostic Methods." ECS Meeting Abstracts MA2024-02, no. 4 (2024): 467. https://doi.org/10.1149/ma2024-024467mtgabs.

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Lithium-Ion Batteries (LIBs) have been at the epicentre of the global push to electrify transport. Having already become mainstream in the automotive industry, vehicles powered by LIBs are gaining traction in other transport sectors such as aerospace and freight trucks. These sectors have more stringent requirements for performance as well as safety. Therefore, academia as well as industry are aggressively exploring battery diagnostic methods that can be implemented on-board [1]. A common feature shared among several well-developed tools for battery diagnostics is their reliance on an electroc

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Putra, Agus Dwi, Mojibur Rohman, and Mochamad Sulaiman. "Simulasi Pengaruh Waktu dan Gerak Terhadap Desain Implan Sendi Pinggul." Jurnal Pendidikan Teknik Mesin Undiksha 9, no. 1 (2021): 23–31. http://dx.doi.org/10.23887/jptm.v9i1.28885.

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Simulasi desain implan sendi pinggul bertujuan untuk menganalisis total deformasi maksimum, tegangan prinsipal maksimum, dan tegangan geser maksimum dengan kombinasi variasi waktu, gerakan, dan pembebanan. Simulasi memungkinkan suatu objek diujicobakan secara visual sebelum diproduksi sebagai purwarupa. Fungsi dari simulasi adalah untuk meminimalisir terjadinya kegagalan dan untuk memangkas biaya produksi. Sebelum memulai simulasi suatu objek perlu dibuatkan desain. Desain dalam penelitian ini menggunakan software CAD yakni Inventor 2014, sedangkan analisis metode elemen hingga dalam desain im

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Mani, Megavannan, M. Thiyagu, Rhoda Afriyie Mensah, Oisik Das, and Vigneshwaran Shanmugam. "Nano‐enhanced epoxy sandwich composites: Investigating mechanical properties for future aircraft construction." Polymers for Advanced Technologies 35, no. 6 (2024). http://dx.doi.org/10.1002/pat.6492.

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AbstractThe aviation sector is continually seeking ways to reduce the weight of aircraft structures without compromising their mechanical integrity. Lightweight materials, such as advanced epoxy sandwich composites with hybrid nanostructures, have the potential to significantly contribute to fuel efficiency, thereby addressing environmental concerns and operational costs. This research investigates the mechanical properties of hybrid sandwich polymer composites filled with silica nanoparticles (SNiPs). Epoxy isocyanate (PU) foam sandwich composites were fabricated with kevlar fiber, carbon fib

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"STRATEGIC ASPECTS OF ENSURING THE STABILITY OF THE ENTERPRISE OF THE AVIATION INDUSTRY." Research result. Economic Research 11, no. 2 (2025). https://doi.org/10.18413/2409-1634-2025-11-2-0-4.

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Chouhan, Devesh Kumar, Mageshwari Komarasamy, Scott B. Taysom, et al. "Friction-based recycling: an evaluation of friction extrusion for fabricating Ti-6Al-4 V wire fabricated from machining chip feedstock." International Journal of Advanced Manufacturing Technology, March 5, 2025. https://doi.org/10.1007/s00170-025-15147-0.

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Abstract Titanium and its alloys are used in aviation and automobile industries due to their remarkable strength to weight ratio, but machining loss commonly is high with ~ 80 wt% of the material being converted to scrap. Recycling post-consumer Ti scrap directly into solid bulk products is a potential solution for repurposing valuable material. Further, eliminating fresh Ti sponge during recycling might lead to lower energy and greenhouse gas emissions. In this study, a solid-phase process known as friction extrusion was utilized to recycle Ti-6Al-4 V machining chips into solid wires which co

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Alif, Adlan Mohd Thabit, M. Peariasamy Kalaiarasu, Xuan Kuan Pei, et al. "Diagnostic accuracy of fresh drooled saliva for SARS-CoV-2 in travelers." July 15, 2021. https://doi.org/10.1016/j.tmaid.2021.102144.

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<strong>Background </strong>The standard for SARS-CoV-2 diagnosis is RT-PCR from nasopharyngeal or oropharyngeal swabs. Major airports require COVID-19 screening, and saliva has the potential as a substitute specimen for SARS-CoV-2 diagnosis. We investigated the utility of fresh drooled saliva against NPS for COVID-19 screening of travelers. <strong>Methods </strong>We recruited 81 travelers and 15 non-travelers (including ten controls) prospectively within a mean of 3⋅22 days of RT-PCR confirmed COVID-19. Each study participant provided 2 mls of early morning fresh drooled whol

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Keller, C. Luke, Karan R. Doppalapudi, Josanne-Dee Woodroffe, and Benjamin G. Harvey. "Solvent-free dehydration, cyclization, and hydrogenation of linalool with a dual heterogeneous catalyst system to generate a high-performance sustainable aviation fuel." Communications Chemistry 5, no. 1 (2022). http://dx.doi.org/10.1038/s42004-022-00725-0.

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AbstractThe development of efficient catalytic methods for the synthesis of bio-based, full-performance jet fuels is critical for limiting the impacts of climate change while enabling a thriving modern society. To help address this need, here, linalool, a terpene alcohol that can be produced via fermentation of biomass sugars, was dehydrated, cyclized, and hydrogenated in a one-pot reaction under moderate reaction conditions. This sequence produced a biosynthetic fuel mixture primarily composed of 1-methyl-4-isopropylcyclohexane (p-menthane) and 2,6-dimethyloctane (DMO). The reaction was promo

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Minder, Justin R., Nick Bassill, Frédéric Fabry, et al. "P-type Processes and Predictability: The Winter Precipitation Type Research Multiscale Experiment (WINTRE-MIX)." Bulletin of the American Meteorological Society, June 27, 2023. http://dx.doi.org/10.1175/bams-d-22-0095.1.

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Abstract During near-0°C surface conditions, diverse precipitation types (p-types) are possible, including rain, drizzle, freezing rain, freezing drizzle, ice pellets, wet snow, snow, and snow pellets. Near-0°C precipitation affects wide swaths of the United States and Canada, impacting aviation, road transportation, power generation and distribution, winter recreation, ecology, and hydrology. Fundamental challenges remain in observing, diagnosing, simulating, and forecasting near-0°C p-types, particularly during transitions and within complex terrain. Motivated by these challenges, the field

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Li, Jianwei, Ni Yu, Yuanqing Ding, et al. "Fabrication of rigid polyimide foams with overall enhancement of thermal and mechanical properties." Journal of Cellular Plastics, September 20, 2020, 0021955X2095692. http://dx.doi.org/10.1177/0021955x20956925.

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Polyimide (PI) foams have been developed for decades and widely used as thermal insulation materials. However, the limited mechanical and thermal properties continually being a serious problem that restrict their further applications. In this study, a series of rigid PI foams with excellent mechanical and thermal performance were fabricated by the reaction of benzophenone-3,3',4,4'-tetracarboxylic dianhydride (BTDA) with two diamines of 2–(4-aminophenyl)-5-aminobenzimidazole (BIA) and 4,4'-diaminodiphenyl ether (ODA) with various molar ratios, and the cis-5-norbornene-endo-2,3-dicarbox-ylic ac

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Wang, Q. B., D. L. Jia, X. H. Pei, et al. "Mechanical performance of graphenex/poly(ether ketone ketone) composite sheets by hot pressing." Scientific Reports 12, no. 1 (2022). http://dx.doi.org/10.1038/s41598-022-08221-0.

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AbstractPolymer composites are gradually replacing traditional metal materials in the fields of aviation, aerospace, automotive and medicine due to their corrosion resistance, light weight and high strength. Moulding technology and organization morphology of polymer composite are key elements affecting the quality of products and their application, so a vacuum hot pressing process for graphenex/poly(ether ketone ketone) (PEKK) (x = 0%, 2%, 3%, 4%, 5%, 6%) composite powders is explored with particularly designed moulding parameters to achieve high conductive properties and good mechanical prope

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Hegazy, Dalia A., Mahmoud M. Awd Allah, Hassan Alshahrani, Tamer A. Sebaey, and Marwa A. Abd El‐baky. "Effect of alumina nano‐particles on collapse behavior and energy absorption of laterally loaded glass/epoxy composite tubes." Polymer Composites, August 9, 2023. http://dx.doi.org/10.1002/pc.27630.

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AbstractDue to its exceptional mechanical and crashworthiness properties, lightweight nanocomposites have recently been used more and more in aviation, defense, nautical, and automotive applications. Nanocomposite cylinders could be effectively employed in this respect as energy‐absorbing components for decreasing the impact energy during vehicle crashes. The current work examined the crashworthiness response of nano‐alumina (Al2O3) filled glass fiber reinforced epoxy (GFRE) composite tubes using quasi‐static lateral compressive loads. Crushing profiles and crush force–deformation curves of al

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