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( Yashin Achmatov ),( Igor Tsoi ),( Gulnora Nagaeva ) 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1
Background: To compare clinical and functional patients with isolated right heart dilatation (RVDC) depending on the presence or absence of pulmonary hypertension (PH). Methods: We examined 22 patients who had DC with a primary lesion of the right heart (17 - females, 5 - males). All performed: blood examination, ECG, echocardiography with determination of ejection fraction (EF) of the right ventricle (RV) and the mean pulmonary artery pressure (MPAP), 6-minute walk test (6MWT) and external respiration parameters. Results: According to general clinical laboratory data analyzed differences in the groups have been identified. Noted a relative increase in the level of Hb levels in pts of 1gr., amounting to 135,7 ± 14,6 g / l vs 2gr. = 120,2 ± 23,7 g / l (p> 0.05). Data of 6MWT showed 201,8 ± 86,1 m in 1gr. vs 163,2 ± 60,4 m in 2 gr. respectively. Nevertheless, according to spirometry patients with PH have lower VC (1gr.= 63 5 ± 16,5 l and 2gr. = 67,7 ± 6,3 l), all p> 0.05. The echocardiography parameters of 1gr. : EDV = 90,5 ± 41,6 ml, ESV = 27,5 ± 12,6 ml, that on 26.8% and 29.1%, respectively, were more of similar indicators of 2 gr, with LVEF in 1gr. = 68,9 ± 6,3% and in 2gr. = 69,6 ± 9,6% (all p> 0.05).RV of 1 gr.=55,2±9,7 and RV of 2 gr.=51,3±7,3. RA of 1 gr.=56,7±15,7 RA of 2 gr. = 47,8 ± 9,4; RV EF in 1gr. = 35,7 ± 8,2 that on 9.2% was lower than in 2gr. Conclusions: Patients with RVDC and the presence of LH characterized by elevated levels of Hb, lower VC and RVEF despite of more good parameters of 6MWT.
Autonomous Flying Robot for the Seismic Exploration
Grigoriy Yashin,Nikita Mikhailovskiy,Valerii Serpiva,Anton Egorov,Pavel Golikov 제어로봇시스템학회 2022 제어로봇시스템학회 국제학술대회 논문집 Vol.2022 No.11
Robotic systems for seismic sensor deployment can potentially lead to achieving cost-effectiveness with optimal performance through better survey execution accuracy, shorter turnaround time, and global information management. Among the available robotic platforms, unmanned aerial vehicles (UAVs) or flying robots offer unique platform with a wide range of integrated capabilities, including propulsion, positioning, sensing, remote or self-control, as well as swarm operations. This paper presents a solution that turns individual UAV into Autonomous Seismic Acquisition Device (ASAD). The ASAD consists of a quadrotor equipped with a sensor set underneath for seismic data acquisition. The sensor set includes three orthogonal geophones and a 3-component accelerometer. Thus, the ASAD can fly to the target position, land, couple the sensor to the ground after landing, and record the seismic signal in accordance with the flight mission. As a result of a field test of this system, seismic common-shot gathers were recorded. The gathers acquired by the accelerometer and geophone sensors mounted on the ASAD showed results comparable to those with the traditional wired seismic data acquisition system.
Design rules for creating sensing and self-actuating microcapsules
Kolmakov, German V.,Yashin, Victor V.,Balazs, Anna C. Techno-Press 2011 Smart Structures and Systems, An International Jou Vol.7 No.3
Using computational modeling, we design a pair of biomimetic microcapsules that exploit chemical mechanisms to communicate and alter their local environment. As a result, these synthetic objects can undergo autonomous, directed motion. In the simulations, signaling microcapsules release "agonist" particles, while target microcapsules release "antagonist" particles and the permeabilities of both capsule types depend on the local particle concentration in the surrounding solution. Additionally, the released nanoscopic particles can bind to the underlying substrate and thereby create adhesion gradients that propel the microcapsules to move. Hydrodynamic interactions and the feedback mechanism provided by the dissolved particles are both necessary to achieve the cooperative behavior exhibited by these microcapsules. Our model provides a platform for integrating both the spatial and temporal behavior of assemblies of "artificial cells", and allows us to design a rich variety of structures capable of exhibiting complex dynamics. Due to the cell-like attributes of polymeric microcapsules and polymersomes, material systems are available for realizing our predictions.
A Novel Mathematical Model to Optimize Sustainable Supply Chain in the Lighting Products Industry
Gulmira Baybalinova,Andrey Goncharov,Igor Zavalishin,Igor Sokolov,Inna Trofimova,Denis Yashin,Alla Aleinova,Dmitry Piotrovsky,Rustem Zalilov 대한산업공학회 2021 Industrial Engineeering & Management Systems Vol.20 No.2
Nowadays, due to changing conditions in global markets and competition, the issue of sustainability is a priority for the work of world leaders and business managers and is of great importance. Many supply chain issues are affecting greenhouse gas emissions and supply chain sustainability, such as facility location design, transportation routes, inventory policies, and so on. Lighting products due to the nature of consumption and its very high waste, is one of the most important products in terms of environment and society. In this research, an attempt has been made to design logistics optimization model at the strategic and tactical level in a sustainable supply chain for lighting products, taking into account the economic dimension. In this regard, a nonlinear mathematical model for a sustainable supply chain has been developed with the aim of reducing carbon emissions and reducing total costs. In order to optimize this mathematical model, genetic algorithm has been used. The results of this study show that the design of a sustainable supply chain network in the lighting products industry can significantly reduce the adverse environmental impact of this supply chain.
Development of Compact Femtosecond Yb:KYW Oscillators: Simulation and Experiment
김광훈,Juhee Yang,Elena Sall,Sergey Chizhov,Andrey Kulik,이대식,강욱,Vladimir Yashin 한국물리학회 2012 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.61 No.3
Numerical simulations and laboratory experiments are conducted for the development of a compact femtosecond diode-pumped Yb:KYW oscillator. For optimizing the oscillator as a seeding source for a regenerative amplifier, we simulated the output power as a function of the transmission of the output coupler, the incident pump power, and the amplification axis of the gain medium by using laser cavity analysis and design (LASCAD) software. Numerical and experimental results show good agreement for both N<sub>p</sub>- and N<sub>m</sub>-polarization for N<sub>g</sub>- and N<sub>p</sub>-cut crystals. The experimental results show that the Nm-polarization oscillator’s average power exceeds 1.2 W at the central wavelength of 1035 nm with a pulse duration 111 fs, which is suitable for the combined gain spectrum of a dual-crystal amplifier.
Design rules for creating sensing and self-actuating microcapsules
German V. Kolmakov,Anna C. Balazs,Victor V. Yashin 국제구조공학회 2011 Smart Structures and Systems, An International Jou Vol.7 No.3
Using computational modeling, we design a pair of biomimetic microcapsules that exploit chemical mechanisms to communicate and alter their local environment. As a result, these synthetic objects can undergo autonomous, directed motion. In the simulations, signaling microcapsules release “agonist” particles, while target microcapsules release “antagonist” particles and the permeabilities of both capsule types depend on the local particle concentration in the surrounding solution. Additionally, the released nanoscopic particles can bind to the underlying substrate and thereby create adhesion gradients that propel the microcapsules to move. Hydrodynamic interactions and the feedback mechanism provided by the dissolved particles are both necessary to achieve the cooperative behavior exhibited by these microcapsules. Our model provides a platform for integrating both the spatial and temporal behavior of assemblies of “artificial cells”,and allows us to design a rich variety of structures capable of exhibiting complex dynamics. Due to the celllike attributes of polymeric microcapsules and polymersomes, material systems are available for realizing our predictions.