SAEQ Journal

Book 15
Elmar Janahmadov (SAEQ LTD)

Issue 15 Apr-May-June 2018
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Elmar Janahmadov (SAEQ LTD)
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Published on
Jun 27, 2018
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Science / Research & Methodology
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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.

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 

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.

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.

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.

A prescient warning of a future we now inhabit, where fake news stories and Internet conspiracy theories play to a disaffected American populace

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Casting a wide net through history and culture, Sagan examines and authoritatively debunks such celebrated fallacies of the past as witchcraft, faith healing, demons, and UFOs. And yet, disturbingly, in today's so-called information age, pseudoscience is burgeoning with stories of alien abduction, channeling past lives, and communal hallucinations commanding growing attention and respect. As Sagan demonstrates with lucid eloquence, the siren song of unreason is not just a cultural wrong turn but a dangerous plunge into darkness that threatens our most basic freedoms.

Praise for The Demon-Haunted World

“Powerful . . . A stirring defense of informed rationality. . . Rich in surprising information and beautiful writing.”—The Washington Post Book World

“Compelling.”—USA Today

“A clear vision of what good science means and why it makes a difference. . . . A testimonial to the power of science and a warning of the dangers of unrestrained credulity.”—The Sciences

“Passionate.”—San Francisco Examiner-Chronicle
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