SAEQ: Science and Applied Engineering Quarterly (04.2014)
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
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
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.
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