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Publisher: SAEQ LTD
ISBN:
Category : Science
Languages : en
Pages : 37
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Issue 04 July-Aug-Sept 2014 Diagnosis Of The Contact Interaction Of Solid Bodies At Friction Using Fractal Analysis Methods A.Kh. Janahmadov, M.Y. Javadov, O.A. Dyshin Were developed the additional quantitative research tools of the surface roughness: the fractal dimension of curvature on the bearing surface and the fractal dimension of profilograph. These values are used to classify the regimes of the contact interaction of the metal elements at friction and to diagnose the form of contact according to the fractal dimensions scale, which describes the main three types of contacts: elastic, elastic-plastic and plastic. The Stock Price Valuation Based On The Stochastic Modeling Of Financial Data S.M. Javadova The stochastic model is developed to forecast a movement of stock prices as function of the Wiener process. The canonical decomposition of function values through discrete number of points is used to generate the Wiener process. Factors Causing Corrosion And Destruction of Coating in Operation of Oil-Field Pump N.G. Javadov, A.M. Mehtiev The paper review and analyzes factors that contribute towards corrosion and destruction of coating during operation of oil-field pump. It is noted that factors such as cold, moisture, heat, corrosive components of pumped fluid, mechanical stress, etc., have negative impact. Relations Of Cytokine Blood Spectrum With Nephropathy At Patients With Diabetes A.N. Babakhanova Work objective is to study the cytokine status of patients with diabetes of type 1 and type 2 with a complicated nephropathy and an uncomplicated course. 123 patients with diabetes and the control group of 20 people were inspected. By the immune-enzyme analysis of ELISA the levels (INF-γ, TNF-α, IL-6, IL-1β) were determined in blood serum of the patients. The most expressed changes of the cytokine status were observed in the patients of diabetes of type 1 and type 2 which were expressed in the initial increase of the maintenance of all studied pro-inflammatory cytokines (INF-γ, TNF-α, IL-6, IL-1β). Such changes in activation of the pro-inflammatory cytokines characterize this disease as an inflammatory immune-dependent process. The changes in the cytokine status had a non-uniform character with the most expressed changes in IL-1β, TNF-α, INF-γ synthesis (p ≤ 0,001) and a slight increase of IL-6.
Author:
Publisher: SAEQ LTD
ISBN:
Category : Science
Languages : en
Pages : 37
Get Book Here
Book Description
Issue 04 July-Aug-Sept 2014 Diagnosis Of The Contact Interaction Of Solid Bodies At Friction Using Fractal Analysis Methods A.Kh. Janahmadov, M.Y. Javadov, O.A. Dyshin Were developed the additional quantitative research tools of the surface roughness: the fractal dimension of curvature on the bearing surface and the fractal dimension of profilograph. These values are used to classify the regimes of the contact interaction of the metal elements at friction and to diagnose the form of contact according to the fractal dimensions scale, which describes the main three types of contacts: elastic, elastic-plastic and plastic. The Stock Price Valuation Based On The Stochastic Modeling Of Financial Data S.M. Javadova The stochastic model is developed to forecast a movement of stock prices as function of the Wiener process. The canonical decomposition of function values through discrete number of points is used to generate the Wiener process. Factors Causing Corrosion And Destruction of Coating in Operation of Oil-Field Pump N.G. Javadov, A.M. Mehtiev The paper review and analyzes factors that contribute towards corrosion and destruction of coating during operation of oil-field pump. It is noted that factors such as cold, moisture, heat, corrosive components of pumped fluid, mechanical stress, etc., have negative impact. Relations Of Cytokine Blood Spectrum With Nephropathy At Patients With Diabetes A.N. Babakhanova Work objective is to study the cytokine status of patients with diabetes of type 1 and type 2 with a complicated nephropathy and an uncomplicated course. 123 patients with diabetes and the control group of 20 people were inspected. By the immune-enzyme analysis of ELISA the levels (INF-γ, TNF-α, IL-6, IL-1β) were determined in blood serum of the patients. The most expressed changes of the cytokine status were observed in the patients of diabetes of type 1 and type 2 which were expressed in the initial increase of the maintenance of all studied pro-inflammatory cytokines (INF-γ, TNF-α, IL-6, IL-1β). Such changes in activation of the pro-inflammatory cytokines characterize this disease as an inflammatory immune-dependent process. The changes in the cytokine status had a non-uniform character with the most expressed changes in IL-1β, TNF-α, INF-γ synthesis (p ≤ 0,001) and a slight increase of IL-6.
Author:
Publisher: Elmar Janahmadov (SAEQ LTD)
ISBN:
Category : Science
Languages : en
Pages : 27
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Book Description
Issue 12 April-May-June 2017
Author:
Publisher: SAEQ LTD
ISBN:
Category : Science
Languages : en
Pages : 29
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Issue 06 Jan-Feb-Mar 2015 Physical Mesomechanics And Spectrum Of Metal Surface Layer Excitation At Friction Process With Heavy Loading A.Kh. Janahmadov, N.G. Javadov The paper reviews the physical mesomechanics of structurally inhomogeneous media, developed on the verge of continuum mechanics (macro-level) and physics of plasticity and strength of deformable solids (micro-level). According to the concept of the structural level of deformation, at friction the surface layer of deformable solids is an independent leading functional subsystem. It is shown that with an increase of the deformation level of material, it develops autonomous processes (plasticity waves) inside, which have a significant impact on the staginess of plasticity flow localization and the destruction of contacting bodies, at the meso-level the deformation has a transitional-rotational character. Influence Of Wingtips On Induced Drag Force Of Rectangular Wing R.M. Jafarzade, M.H. Ilyasov, J.N. Huseynli The paper examines the influence of wingtips on the inductive resistance of rectangular wing through the mathematical model based on the distribution of vortices. Assuming that the free vortices originate at the wingtips – the imaginary Π-shape vortex diagram is built above the wing at the height of wingtips. The air is considered to be incompressible. Referring to the Biot-Savart formula, the expression for the inductive velocity, generated by the free vortices, and their average values along the wingspan are found. The induced drag force and its co- efficient are determined through the average bevel angle of flow. The inductive drag force is analytically proven. Application Of Coordination Polymers To Increase The Reservoir Oil Recovery B.T. Usubaliev, E.E. Ramazanova, F.T. Murvatov, E.N. Aliyev, Y.S. Salakhova, M.K. Munshieva, F.B. Aliyev, A.K. Rzaeva It is first time when an application of composite materials, BAF-1 BAF-2, on the basis of the co- ordination polymers is studied to improve the rheological properties of crude oil. It has been established that composite materials reduce the oil viscosity by 60-70% and also have a positive effect on other properties. Relaxation Of The Non-Equilibrium Field Effect In In2O3-SiO2-Si-SiO2-Al Structures At The Non-Equilibrium Depletion Regimes A.Z. Badalov, Sh.G. Zeynalova The article studies in detail the effect of various factors on the screening time of In2O3-SiO2- Si-SiO2-Al structures, the influence of the lighting temperature, and the supply voltage on the duration of the non-equilibrium non-stationary depletion process. It is also examines the dependence of the current depolarization on the power supply impulse duration with and without exposure to the LED light. The Theoretical Analysis Of Crude Oil Vapour Pressure And Cavitational Technologies Studying Of Physical And Chemical Properties Of Transported Oil In The Course Of Cavitation S.K. Gezalov We have worked out the criterion of fuzzy interval for minimizing target function with fuzzy coefficient. The given criterion shows adaptability of genetic algorithms for building pare-to-optimal solutions of multi-objective problem of transport logistics with fuzzy coefficient of objectives.
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Publisher: http://www.saeqltd.com
ISBN:
Category : Science
Languages : en
Pages : 37
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Issue 02 Jan-Feb-Mar 2014 The Characteristic Analysis Of Changes In The Processes, Phenomena And Effects Within Working Layers Of Metal Polymer Pairs During Electro-Thermo-Mechanical Friction A.Kh. Janahmadov, A.I. Volchenko, M.Y. Javadov, D.A. Volchenko, N.A. Volchenko, E.A. Janahmadov The wave nature of changes in the external and internal characteristics of the metal polymer pairs at the electro-thermo-mechanical friction. The Research And Development Of The Highly Efficient Catalyst Of The C3-C4 Hydrocarbon Processing S.R. Rasulov, N.A. Salimova, G.R. Mustafaeva, L.V. Huseynova The effect of the different input methods of modifiers is studied: ion exchange, impregnation and dry mechanical mixing of catalytic properties of the zeolite base catalyst at the C3-C4 hydrocarbon conversion. The obtained quantitative data helps to identify the significant differences for the thermo-steaming and thermal activation of the modified catalyst exhibited during the conversion of the C3-C4 hydrocarbons and the selectivity of aromatic hydrocarbons. It is shown that the sample made of by the mechanical mixing with a subsequent high temperature treatment is most active.The regularities of the reaction-regeneration cycles are established. Technological Aspects Of Machine Parts Durability Improvements A.M. Gafarov, P.G. Suleymanov, V.A. Gafarov, F.M. Kalbiyev Based on the papers of national and foreign authors, the technological overview of the machine parts wear resistance is given in the paper. The obtained data is analyzed. The Study Of Factors Affecting On The Heating Of Elastic Elements Of The Coupling I.A. Khalilov The article studies the heating of the elastic element of the coupling depending on the influencing factors such as the damping capacity of the coupling, the ratio of the inertia moments in the driving and driven machinery details, the heat transfer coefficient and the cooling area of the of the elastic element of the coupling and the circumferential frequency of oscillation of the machinery driving system.
Author:
Publisher: Elmar Janahmadov (SAEQ LTD)
ISBN:
Category : Science
Languages : en
Pages : 30
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Book Description
Issue 05 Oct-Nov-Dec 2014
Author:
Publisher: Elmar Janahmadov (SAEQ LTD)
ISBN:
Category : Science
Languages : en
Pages : 20
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Book Description
Issue 11 January-February-March 2017 Studying On Stability Of Piezoelectric Actuators Of Initial Alignment System Accelerometers A.M. Pashayev, T.I. Karimli, V.A. Neymatov The article investigates the servo actuator system of the initial alignment of the piezoelectric accelerometers in automatic operational mode, which eliminates the parasitic transverse sensitivity. There were developed the transfer functions of the piezoelectric drive of the turntable, built and performed a simulation modeling. The resulting oscilloscopes of the simulation model confirm the reliability of the proposed calculation method for the position regulation parameters, to ensure the necessary nature of the transition process. Phenomenological Approach In Decision-Making To Develop Oil-Gas Deposits T.Sh. Salavatov The network of oil and gas fields represents interconnected and interacting subsystems, and elements, such as layer, seam, well (production and injection), gas distribution network (gas lift), collection and transportation network for product distribution, distribution and injection of water into reservoir (pressure maintenance). Development Of Optimal Regimes Of Cooling For Plastic Parts Of Thermosets D.A. Kerimov, N.A. Hasanov The authors examines the thermo-strained state of plastic parts of oilfield equipment made of thermosetting materials. It shows that cooling of plastic parts and their practical management help to manufacture higher quality items under working conditions. Authors analytically solved the heat equation as physical phenomenon of constructional plastic parts at compressing and proposed the optimal manufacturing regimes.
Author:
Publisher: SAEQ LTD
ISBN:
Category : Science
Languages : en
Pages : 51
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Book Description
Issue 03 Apr-May-June 2014 The Frictional Interaction In Electrical And Thermal Fields Of Metal Friction Pairs A.Kh. Janahmadov, A.I. Volchenko, E.S. Pirverdiev, D.A. Volchenko, N.A. Volchenko, D.Y. Zhuravlev The article examines the origins and development of the electrical and thermal explosions in the polymer lining subsurface layers, as well as the discharge penetrating through the layers of micro-protrusions. The Development Of Mathematical Models With “Skin-Factor” For The Petroleum Reservoir Filtration Ab.G. Rzaev, S.R. Rasulov, I.A. Abbasova, S.N. Rahimova The paper proposes a modified Dupuis formula, which describes the filtration process based on “skin-factor” of the polluted near oil-well area. The viability of proposed model is provided. The regularities of the reaction-regeneration cycles are established. The Safety Management Based On The Probabilistic Risk Assessment T.R. Jafarzade The probability estimation of potentially dangerous (basis) events is conducted on the basis of the current values of the risk factor given the risk significance of the individual components responsible for the flight safety. The flight is viewed as a random process described by a stochastic differential equation. The author raises the issue of absolute and guaranteed safety. The Mass-Transfer At The Wastewater Countercurrent Extraction Processes Inside Of The Spray Tower And Its Modeling A.A. Gasanov The wastewater treatment technology is developed on the basis of the solvent extraction using a spray extractor. In the paper the optimal process parameters are proposed and the consumption rates for continuous and dispersed phases are justified. The research results of the wastewater treatment produced by the paint and varnish manufacturers from butylglycol, phenilizopropanol, acetic acid and acetylacetone are included in the paper. The mathematical model of process is proposed; the specific area of the contact surface, the distance between the extractor cells, the coefficients of mass-impact and mass-transfer of the phase components are defined; the component concentrations in opposite phases and the aggregate height are calculated. The Deformation And Break Up Of Drops And Bubbles In The Isotropic Turbulent Flows G.I. Kelbaliyev, L.V. Guseynova, S.R. Rasulov, G.Z. Suleymanov The research paper is dedicated to the phenomena of deformation and break up of drops in the isotropic turbulent flow. The phenomena has been analyzed, modeled and compared with the experimental data. As a result of that research, the analytical solution is provided for the given problem, the expressions for estimation of the deformation level and the break up frequency depending on Red and Mo numbers have been obtained.
Author:
Publisher: Elmar Janahmadov (SAEQ LTD)
ISBN:
Category : Science
Languages : en
Pages : 20
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Book Description
Issue 16 July-Aug-Sept 2018
Author:
Publisher: SAEQ LTD
ISBN:
Category : Science
Languages : en
Pages : 40
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Issue 01 Oct-Nov-Dec 2013 The Multi-Fructural Analysis Of Fatigue Failure Under Friction Process A.M. Pashayev, A.Kh. Janahmadov, O.A. Dyshin, M.Y. Javadov The article shows the need to combine approaches of synergetics and fractals in the study of friction and wear in the frictional contact, due to fact that dissipative structures, self-organising in the open systems, are known to have a fractal behaviour The multi-fractal concept allows to introduce new quantitative structures, characterised by a spectrum of generalised fractal dimensions and reflected by the degree of randomness. Different levels of structure (micro-, mesa- and macro-scale) are described in the framework of multi-fractal analysis. A procedure to calculate the multi-fractal dimension of this structure is developed and the results of the numerical calculations are submitted.Research Of Loading Distribution On Coils Of Running Pair Of The LatchN.H.JavadovIt is given the calculation procedure of distribution of pressure on coils of running pair of latch at various loading schemes. Recommendations are provided for the choice of loading schemes of running pair, which ensures more uniform distributions and therefore, considerably reduces the wear of coils by means of constructive changes in a latch. Modeling And Forecasting The Financial Markets Using Theory Of Deterministic Chaos And Fractals S.M. Javadova This paper presents the results of the multi-fractal analysis based on the wavelet transformation, which can be considered as method of studying the spectral correlation properties of various processes, including non-stationary. Comparative experience with methods MFFA (multi-fractal fluctuation analysis) and WTMM (wavelet transform modulus maxima) in studying of the multi-fractal properties of signals of time function shows that MFFA method is more reliable and robust.As an instrument of the ‘local’ study of time function structure, WTMM allows to evaluate the correlation properties of random processes in comparison with a short signal. Surface Structures Of Frictional Materials On Asbestosfree Base M.I. Aliyev Development of asbestosfree composite materials on petroleum coke base enabled to obtain environmentally sound products with sufficiently high physical, mechanical and tribotechnical characteristics. The materials have been analyzed/tested from the perspective of physicochemical friction mechanics in the breaking mode through the differential-thermal analysis (DTA) and thermogravimetric analysis (TGM), supplemented with the study of friction materials structure. The thermogravimetric analysis findings indicated that decomposition of the new asbestosfree friction material begins after 14 minutes at 3000C.
Author:
Publisher: SAEQ LTD
ISBN:
Category : Science
Languages : en
Pages : 33
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Book Description
Issue 09 July-August-September 2016 The Creation Of Fluid And Gas Mechanics Basis In The Micro-Cracked Channel R.S. Gurbanov, M.A. Mammadova, A.A. Hajiyev There are experimental investigations of the fluids flow in the small-sized channels, the hydraulic resistances results of which are more than the estimated ones according to theoretical formulas and different supposed explanations without the quantitative evolution have been given in the reference. Taking into consideration this situation in the mechanics we were conducted the experiments in special developed unit with different fluids: water, viscous and anomalous oils. The results of the numerous experimental investigations for deter- mining new effect of fluid mechanics in the micro-cracked channels have been given in this work. Firstly the experimental-estimated methodology in the “micro-crack fluid” system has been proposed and realized for the quantita- tive estimation of the hydraulic resistances. This approach allows to conduct hydrodynamic engineering estimations for fluids flow in the fractured-porous medium, in the mechanical engineering, in the lubrication systems of instrument engineering and also for solutions of the sealing problems in different branches of industry and medicine. Multi-Criterial Estimation Of The Level Of Corrosion Damage Of The Gas-Pipeline Areas In The Ambiguous Expert Opinions S.A. Aghammadova The linguistic model has-been developed for the estimation of the corrosion damage level of the gas-pipeline areas in the optimistic and the pessimistic expert opinions of the influencing factors. For solving of the given task generalization of the method of multi-criterial choice of the best alternative in the case of rules of fuzzy productions has been chosen, antecedents and consequents of which have been by fuzzy sets with multi-semi functions of belonging. Wavelet Method For Solving Problems Of Unsteady Fluid Filtration In The Crack-Porous Ring Type Formation O.A. Dyshin Based on the multiple-scale analysis in L^2(R^3) using discrete wavelet transform with separable orthonormal basis we’ve developed a method of sustainable approximate calculation of the classical solution of the initial-boundary value problem of unsteady fluid filtration in the crack-porous ring-type formation. The problem is reduced to solving ill-posed problem of finding the solution of linear polynomial equation given inaccurate data, when the approximate solution constructed by regularization method is stable with respect to error in differential equations ratios and boundary conditions set up, as well as set up right member falseness. Decision Making In The Multi-Criteria Problems Of Alternatives Using The Bayesian Interval Inference Methods R.F. Hajiyeva The Bayesian inference method is used in the decision process of the multi-criteria problems using the strength of information on the product rules. Using these mechanisms the point and interval estimates of the posterior probabilities are built on their prior probabilities, derived from the composite aggregation rules of the alternative description information of the decision-maker preferences defined by a fuzzy expert judgements. These decision logic is applied to the problem of selecting a candidate on the vacant faculty position in university Comparative Analysis Of Trading Systems Performances With Respect To Transaction Cost E.J. Janahmadov The purpose of this paper is to compare and analyze the performance of trading rules applied to the underlying and derivative products. Three different trading market indictors were chosen from the range of trading rules according to their performance relatively to Dow Jones Industrial Average. On the basis of these technical indicators the automated trading systems were developed and then applied to the underlying instrument such Dow Jones Industrial Average. The performances of trading systems and profit/loss indexes were compared and analyzed. The results are compared with “buy-and-hold” strategy and performance of underlying security. The results of the research intend to show the effect of the transactions costs on the performance of trading systems and optimal could be applied to invest into underlying or derivatives of underlying.
