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( S. Oliynyk ),( V. Sazonov ),( V. Shevchenko ),( S. Semenov ),( Mansour Bin Ibrahim Sulaiman ),( Arwa M. Badr El-Din ) 체육과학연구원 2010 International Journal of Applied Sports Sciences Vol.22 No.2
The authors have conducted the study on the influence of a new dietary supplement "Antilactate" (DS "Antilactate") on the parameters of working capacity and functional preparation of skilled athletes at a test load of sub-maximum power in the anaerobic zone of energy-supply and on the after-load renewal processes. Sixteen male athletes participating in Greco-Roman style wrestling were involved in the study; 10 men made up a test group, and six a control one. The study was conducted during the "crash" microcycle at the special preparatory stage of the base period. The duration of the microcycle, which was aimed at the improvement of athlete performance, was 7 days. The training loads during the mentioned microcycle were provided mostly at the account of anaerobic glycolytic mechanisms of energy-supply. The athletes from the test group were taking the DS "Antilactate" on a 7-day course. A daily dosage of the DS "Antilactate" substance - malate mono[(2-dimethylamino)ethyl ether] of succinic acid - made up 2.0 g. The athletes from the control group were taking a placebo under a similar pattern. To evaluate the working capacity and the preparation level of the tested athletes, we used a 30-second Wingate bicycle ergometer anaerobic test, which was conducted twice - at the start of the microcycle, during which the athletes were taking the DS "Antilactate" or the placebo, and at its termination. The development of renewal processes following the test load implementation was evaluated under the indices of lactate, urea, after-products of lipid peroxidation, hemoglobin and erythrocyte content in the athlete`s capillary blood. It was determined that a course (over a period of 7 days) administration of the DS "Antilactate" during the "crash" microcycle at the special preparatory period did not exert a significant influence on the parameters of working capacity and functional preparation of the athletes who performed work at sub-maximum power in the anaerobic zone of physical loads. Meanwhile, the intake of the tested dietary supplement would promote body restoration after anaerobic glycolytic loads at sub-maximum power, which was proved by the rise in the rate of the blood lactate elimination during a leisure period following the performance of test loads, absence of blood hemoglobin decrease and excessive activation of lipid peroxidation specified by intensive training loads in the athletes from the test group, who administered the DS "Antilactate". The findings allow us to consider it appropriate to employ this parapharmaceutical in the practice of skilled athletes practicing different sports with the predominant glycolytic mechanism of work energy-supply.
Dual-Bell Contour를 갖는 Slot Nozzle의 추력특성
권민찬(Minchan Kwon),V. V. Semenov 한국추진공학회 2013 한국추진공학회 학술대회논문집 Vol.2013 No.12
고정된 팽창비 노즐을 갖는 비행체의 최대 비추력은 노즐 출구 압력이 로켓의 비행궤적 중 일치하는 몇 몇 대기압력 고도에서 갖게 된다. Dual-Bell Contour를 갖는 Slot Nozzle은 고도보정기법의 하나로써 통상적인 Bell Nozzle과 비교하였을 때 지상에서는 약 8% 그리고 고고도에서는 약 3.6%의 추력증가 특성을 갖는 다는 것이 연구결과를 통해 알려졌다. At rigid, fixed-area nozzle with a given expansion ratio the maximum specific impulse is reached when nozzle exit pressure is selected as equal to some atmospheric pressure on trajectory of rocket flight. Slot Nozzle with Dual-Bell contour is one of the altitude compensation methods. The calculations shows the thrust of Slot Nozzle increased to 8% near the Earth and 3.6% in space at equal conditions with conventional Bell Nozzle.
Mironenko, I. G.,Karmanenko, S. F.,Ivanov, A. A.,Semenov, A. A.,Sinjukova, O. V.,Kang, Chong-Yun,Oh, Young-Jei Taylor Francis 2006 Ferroelectrics Vol.334 No.1
<P> Microwave multislot transmission lines formed on (Ba,Sr)TiO3-BST ferroelectric films were studied using full-wave analysis and resonator measurements. The BST films were grown on sapphire, MgO and alumina substrates in the process of RF sputtering. The multislot resonators formed on different types of BST films were measured at frequency ∼30 GHz. The slot and multislot resonator topologies measured in rectangular waveguide had similar quality factor (100-120). The BST film dielectric characteristics were obtained: &epsis; = 1100-1800; tan &dgr; = 0.02-0.03. The coupled multislot structures were simulated to realize tunable band-pass filters of various tunability range, pass band and microwave losses in the band.</P>
Pryakhin E.A.,Mokrov Yu.G.,Trapeznikov A.V.,Atamanyuk N.I.,Andreyev S.S.,Peretykin A.A.,Mokrov K. Yu.,Semenov M.A.,Akleyev A.V. 한국원자력학회 2023 Nuclear Engineering and Technology Vol.55 No.11
Background: Storage reservoirs of radioactive waste could be the source of atmospheric pollution due to the efflux of aqueous aerosol from their water areas. The main mechanism of formation of aqueous aerosols is the collapse of gas bubbles at the water surface. In this paper, we discuss the potential influence of biological factors on gas ebullition in the water areas of the radioactively contaminated industrial reservoirs R-9 (Lake Karachay) and R-4 (Metlinsky pond) of the Mayak PA. The emission of the released non-dissolved gases captured with gas traps in reservoir R-9 was (88–290) ml/m2 per day (2015) and in reservoir R-4 (270–460) ml/m2 per day (2016). The analysis of gas composition in reservoir R-4 (60% methane, 35% nitrogen, 2.4% oxygen, 1.5% carbon dioxide) confirms their biological origin. It is associated with the processes of organic matter destruction in bottom sediments. The major source of organic matter in bottom sediments is the dying phytoplankton developing in these reservoirs. Conclusion: The obtained results form the basis to set a task to quantify the relationship between the phytoplankton development, gases ebullition and radioactive atmosphere contamination.
Kurashov, Vasily N.,Allakhverdiev, Suleyman I.,Zharmukhamedov, Sergey K.,Nagata, Toshi,Klimov, Vyacheslav V.,Semenov, Alexey Yu.,Mamedov, Mahir D. Korean Society of Photoscience 2009 Photochemical & photobiological sciences Vol.8 No.2
An electrometric technique was used to investigate the generation of a photovoltage ($\Delta\psi$) by Mn-depleted spinach photosystem II (PS II) core particles incorporated into liposomes. In the presence of $MnCl_2$, the fast kinetically unresolvable phase of $\Delta\psi$ generation, related to electron transfer between the redox-active tyrosine $Y_Z$ and the primary plastoquinone acceptor $Q_A$ was followed by an additional electrogenic phase (${\tau}\;{\sim}\;20\;{\mu}s$, ~5% of the phase attributed to ${Y_Z}^{OX}{Q_A}^-$). The latter phase was ascribed to the transfer of an electron from the Mn, bound to the Mn-binding site of the PS II reaction center to the ${Y_Z}^{OX}$. An additional electrogenicity observed upon addition of synthetic trinuclear Mn complex-1 has a ${\tau}\;{\sim}\;50\;{\mu}s$ (~4% of the ${Y_Z}^{OX}Q_A$) and ${\tau}\;{\sim}\;160\;ms$ (~25%). The fast electrogenic component could be ascribed to reduction of ${Y_Z}^{OX}$ ox by Mn, delivered to the Mn-binding site in Mn-depleted samples after the release of the tripod ligands from the complex-1 while the slow electrogenic phase to the electron transfer from theMn-containing complex-1 attached to the protein-water boundary to the oxidized Mn at the protein-embedded Mn-binding site.
이정민(Jung-min Lee),권민찬(Min-chan Kwon),신동순(Dong-sun Shin),시묘노프(Semenov V. V.) 한국항공우주학회 2004 韓國航空宇宙學會誌 Vol.32 No.10
본 연구는 공기역학적 운동에너지를 이용하여 점화장치를 구성하는데 따른 해석과 실험에 관한 연구로써 공기역학 점화기는 크게 노즐과 공명관으로 구성되어 있다. 압축가스가 노즐을 통과하여 공명관으로 유입되며, 이때 노즐과 공명관사이에 압력맥동이 발생한다. 이러한 압력맥동에 의한 운동에너지는 일정한 조건하에 공명관 내부에서 열에너지로 변화하게 된다. 본 연구에서는 음속노즐과 초음속 노즐을 두개의 각기 다른 공명관에서 실험과 수치해석을 실시하였으며, 노즐표면의 마찰손실과 공기역학 손실을 최소화하는 초음속 노즐의 최적형상을 제시하였다. This work is on numerical and experimental studies on the new type igniter using aerodynamic energy. The aerodynamic igniter consists of a nozzle and a resonance tube. The supersonic jet from a nozzle coming into the resonance tube generates pressure oscillation between the nozzle and the resonator. This oscillation changes the kinetic energy to thermal energy in the resonator under a certain condition. In this study, sonic and supersonic nozzles were tested in two different resonators, results has been compared. And geometrical optimum values of a supersonic nozzle has been suggested to reduce aerodynamic loss and friction in the expanded surface of the nozzle.