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Search Results: 1 - 10 of 356204 matches for " G. N. Daminov "
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Determination of Carbon Oxide in Exhausts of Vehicles by Thermocatalytic Method  [PDF]
E. Abduraxmanov,М. М. Sultanov,G. N. Daminov,S. U. Tillayev
Open Access Library Journal (OALib Journal) , 2014, DOI: 10.4236/oalib.1100406
Abstract: Selective methods of thermocatalytic determination of carbon oxide and hydrocarbons in exhaust gases of vehicles are based on measurement of different thermo effects of oxidation of a combustible mixture, obtained from two identical thermosensible elements working at different temperatures are developed. At one temperature there is an oxidation of all analyzed gas mixture, and on another—the mixture without a selectively determined component and by the difference of thermo effects an exact concentration of components was determined.
Early Poststroke Rehabilitation Using a Robotic Tilt-Table Stepper and Functional Electrical Stimulation
Alexey N. Kuznetsov,Natalia V. Rybalko,Vadim D. Daminov,Andreas R. Luft
Stroke Research and Treatment , 2013, DOI: 10.1155/2013/946056
Abstract: Background. Stroke frequently leaves survivors with hemiparesis. To prevent persistent deficits, rehabilitation may be more effective if started early. Early training is often limited because of orthostatic reactions. Tilt-table stepping robots and functional electrical stimulation (FES) may prevent these reactions. Objective. This controlled convenience sample study compares safety and feasibility of robotic tilt-table training plus FES (ROBO-FES) and robotic tilt-table training (ROBO) against tilt-table training alone (control). A preliminary assessment of efficacy is performed. Methods. Hemiparetic ischemic stroke survivors (age years, days after stroke) were assigned to 30 days of ROBO-FES ( ), ROBO ( ), or control ( ) in addition to conventional physical therapy. Impedance cardiography and transcranial doppler sonography were performed before, during, and after training. Hemiparesis was assessed using the British Medical Research Council (MRC) strength scale. Results. No serious adverse events occurred; 8 patients in the tilt-table group prematurely quit the study because of orthostatic reactions. Blood pressure and CBFV dipped % during robot training. In 52% of controls mean arterial pressure decreased by %. ROBO-FES increased leg strength by points, ROBO by more than control ( , ). CBFV increased in both robotic groups more than in controls ( ). Conclusions. Robotic tilt-table exercise with or without FES is safe and may be more effective in improving leg strength and cerebral blood flow than tilt table alone. 1. Introduction Stroke poses enormous medical and social problems to societies worldwide. Stroke incidence ranges between 101 and 285 per 100.000 inhabitants per year depending on continent and region [1]. Ninety percent of stroke survivors are left with deficits, and about one-third remain dependent in activities of daily living [2]. Starting rehabilitation as soon as possible, therefore, is a key goal of stroke care. Poor outcome is more likely if rehabilitation is delayed [3]. Early mobilization is an important step to further recovery. The AVERT trial in which subjects was mobilized out of bed within 24 hours after a stroke suggests that early mobilization is safe [4] and effective in reducing long-term dependency [5]. Still, in most stroke services patients stay in bed for prolonged periods of time because of circulatory instability or limited patient cooperation. Robots can help early mobilization. Robots can assist the patient with altered states of vigilance enabling movement repetitions that may induce central nervous system
Mathematical Approaches to the Structural Analysis and Formalization of Woven Fabrics  [PDF]
Askarali Daminov, Otabek Kasimov
World Journal of Engineering and Technology (WJET) , 2016, DOI: 10.4236/wjet.2016.43D032
The present paper shows the mathematical approach of formalization of textile fabrics, based on concepts and elements of graph theory and the structural analysis of woven structures and possibility of numerical evaluation of interlacing factor of warp and weft threads in woven structures through the weight of a structural graph vertex. Research observes quantitative aspect of structural evaluation of threads topology in fabric focusing in graph theory, in order to present an application productivity of this theory to solve the technological tasks.
Impact of climate warming on vegetation cover and permafrost in West Siberia northern taiga  [PDF]
N. G. Moskalenko
Natural Science (NS) , 2013, DOI: 10.4236/ns.2013.51A022

The goal of this study is to reveal the impact of climate warming on vegetation and permafrost in ecosystems of West Siberia permafrost zone. Changes of various ecosystem components—microrelief, vegetation and soil covers, active layer thickness, soil and permafrost temperature, exogenous geological processes—are investigated. The impact of increase of air temperature and the amount of atmospheric precipitation on the development of northern taiga ecosystems is monitored. Results of ecosystem changes under the impact of climatic changes are presented.The ecosystems are detected, in which the local permafrost temperature decrease caused by dynamics of vegetation cover observed on a background of the general tendency of temperature increase.

Determination of Manganese in Tap Water by a New Extraction-Photometric Method  [PDF]
N. Kh. Rustamov, G. G. Abbasova
American Journal of Analytical Chemistry (AJAC) , 2014, DOI: 10.4236/ajac.2014.54034
Abstract: The heteroligand complex of manganese with 1,10-phenantroline and o-nitrobenzolazosalicylic acid has been investigated by spectrophotometric method. The condition of complexing and extraction, physical-chemical and analytical characteristics of this complex have been found. Complex formation is observed in the pH range 5 - 11. Extraction constant was found as 5.3 × 1012, stability constant was found as lgβK = 9.03 ± 0.03. Molar absorptivity is ε = (1.36 ± 0.08) × 104 l·g﹣1·cm﹣1. Beer's law is obeyed in the range of 1.0 - 22.5 μkg manganese (II). The extraction-photometric methods of manganese determination have been worked out. The influence of diverse ions on determination of manganese (II) has been studied. The proposed method was applied successfully to determine amount of manganese in tap water.
Optimal Operation of Multipurpose Reservoir for Irrigation Planning with Conjunctive Use of Surface and Groundwater  [PDF]
N. G. Nikam, D. G. Regulwar
Journal of Water Resource and Protection (JWARP) , 2015, DOI: 10.4236/jwarp.2015.78052
Abstract: In the present study, a Linear Programming (LP) model is developed for the conjunctive use of surface water and ground water to obtain the optimal operating policy for a multipurpose single reservoir. The objective of the present study is to maximize the net benefit from the command area under consideration. The constraints imposed on the objective function are maximum and minimum irrigation demands, reservoir storages and canal capacity. The model takes into account the continuity constraint which includes inflows in to the reservoir, releases for irrigation, releases for hydro-power generation, evaporation losses, feeder canal releases, initial and final storages in the reservoir in each time period. The developed model is applied to the case study of Jayakwadi reservoir stage-I, built across river Godavari, Maharashtra, India. Initially the model is solved for the availability of surface water which results in net benefit of 3373.45 million rupees with irrigation intensity is 57.07%. Next the model solved by considering the availability of surface water and available potential of groundwater in the area, which results in net benefits of 3590.02 million rupees with an intensity of irrigation 58.48%. The present model takes in to account the socio-economic requirement of growing the essential crops to meet the requirement of the society. The model has also generated the canal wise optimal releases for irrigation and power, monthly utilization of groundwater, storages in the reservoir at the end of every month and corresponding head over the turbine.
Analysis of Nonlinear Dust-Acoustic Shock Waves in an Unmagnetized Dusty Plasma with q-Nonextensive Electrons Where Dust Is Arbitrarily Charged Fluid  [PDF]
G. Mandal, N. Y. Tanisha
Journal of Applied Mathematics and Physics (JAMP) , 2015, DOI: 10.4236/jamp.2015.32015

The nonlinear propagation of dust-acoustic (DA) shock waves in three-component unmagnetized dusty plasma consisting of nonextensive electrons, Maxwellian ions and arbitrarily charged mobile dust grain has been investigated. It is found that the presence of q-nonextensive electrons and ions can change the nonlinear behavior of shock wave. The standard reductive perturbation method is employed to study the basic features (phase speed, amplitude and width) of DA shock waves (DASWs) which are significantly modified by the presence of Maxwellian ions and nonextensive electrons. The present investigation can be very effective for understanding the nonlinear characteristics of the DASWs in space and laboratory dusty plasmas.

Identification of Influential Sea Surface Temperature Locations and Predicting Streamflow for Six Months Using Bayesian Machine Learning Regression  [PDF]
N. K. Shrestha, G. Urroz
Journal of Water Resource and Protection (JWARP) , 2015, DOI: 10.4236/jwarp.2015.73016
Abstract: Sea surface temperature (SST) has significant influence in the hydrological cycle and affects the discharge in the stream. SST is an atmospheric circulation indicator which provides the predictive information about the hydrologic variability in the region around the world. Use of right location of SST for a given location of stream gage can capture the effect of oceanic-atmospheric interaction, improving the predictive ability of the model. This study aims on identifying the best locations of SST at the selected stream gage in the state of Utah that spatially covers the state from south to north, and use them for next six-month streamflow volume predictions. The data-driven model derived from the statistical learning theory was used in this study. Using an appropriate location of SST together with local climatic conditions and state of basin, an accurate and reliable streamflow was predicted for next six months. Influence of Pacific Ocean SST was observed to be stronger than that of Atlantic Ocean SST in the state of Utah. The SST of North Pacific developed the best model in most of the selected stream gages. Each model was ensured to be robust by the bootstrap analysis. The long-term streamflow prediction is important for water resource planning and management in the river basin scale and is a key step for successful water resource management in arid regions.
Ca-Al Hydrotalcites as Catalysts for Methanolysis and Ethanolysis of Soybean Oil  [PDF]
E. A. N. Simonetti, G. P. Thim, G. G. Cortez
Modern Research in Catalysis (MRC) , 2014, DOI: 10.4236/mrc.2014.34015
Abstract: The use of heterogeneous catalysts in the transesterification reaction of vegetable oils has getting emphasis in recent years, mainly by the alternative of obtaining clean fuel derived from renewable sources. Metal oxide such as MgO or CaO, supported ones like \"\" and zeolites are often applied in transesterification process. Among them, hydrotalcite has shown potential as catalysts on this reaction due to their physicochemical properties, such as: thermal stability, porosity, specific surface area, memory effect, basicity, acidity and anion exchange capacity. This work studies the catalytic performance of the calcium and aluminum based hydrotalcite in the transesterification reaction of soybean oil in methanol and ethanol. The hydrotalcite samples treated at 450?C were impregnated with KOH. The efficiency of impregnated and non- impregnated samples was compared and the non-impregnated one showed the best performance. This property was attributed to the higher availability of active sites used in the transesterification process.
Flight to America
Güneli Gün
American Studies Journal , 2011,
Abstract: Güneli Gün’s memoir piece truly combines the excitement of the young traveler with the humor of the mature narrator. Born in Izmir, Turkey, she breaks her engagement to a young but conservative Turkish architect and overcomes her father’s concerns to eventually study at Hollins College, Virginia. Addressing topics such as breaking out of a traditional society, being torn between the home country and the imagined new home, and finding comfort in the arts, “Flight to America” compellingly reflects Güneli Gün’s mastery as a storyteller.
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