A. G. Naumov

• Professor at IVANOVO FIRE AND RESCUE ACADEMY OF THE STATE FIRE SERVICE OF THE MINISTRY OF THE RUSSIAN FEDERATION FOR CIVIL DEFENSE, EMERGENCIES AND ELIMINATION OF CONSEQUENCES OF NATURAL DISASTERS

The article considers the theory of radical-chain mechanism of formation of lubricant films on tribos-connected metal surfaces when cutting metals. It is shown that chemically active particles formed by the destruction of molecules of lubricant and cooling technological means (LCTM) in the contact zone play a decisive role in the synthesis of lubri...

Improving the efficiency of cutting tools and the quality of the processed surfaces in the course of metal blade processing is largely determined by the intensity of adhesive interactions between the tribo-conjugated surfaces of the tool and processed materials. This is due to the high chemical activity of the juvenile surfaces formed in the proces...

The effect of temperature on the friction coefficient under boundary lubrication by cholesteric liquid crystal nanomaterials, as well as by their solutions in industrial oil, is studied. It is established that the minimum friction coefficient for the investigated substances is reached in the mesomorphic state. In the isotropic state, an insignifica...

An experimental study of the steel-cutting process in a controlled atmosphere is performed. Based on the results, a theoretical model is developed to evaluate the kinetics of the formation of an oxide lubricating film under steel cutting and to optimize the cutting process by decreasing the cutting forces and the wear and tear of the tool. The perf...

This work presents the results of theoretical and experimental investigation into machining of various materials without the use of conventional environmental unfriendly cutting fluids while maintaining keys technological performance parameters of machining. In this work, the machining zone was fed with small doses of cutting fluid enclosed in micr...

The results of experimental investigations of the tribological properties of iodine, which has been used as a microadditive in cutting-fluid components (CFCs) at various operations of mechanical treatment of metals and alloys. A mechanism of formation of separating lubricating films due to the initiation of chemical reactions between iodine radical...

The performance of abrasive tools may be improved by impregnation with special compositions. By various means, the impregnating agent reduces the cutting force and tool wear and enhances the quality of the final ground surface.

The paper considers the problems of tribological studies under conditions of blade cutting and friction of metals. Experimental results of study of the processes of contact interaction in the presence of lubricant-coolant are presented. The main focus is the description of the original methods developed by the Ivanovo scientific school and the equi...

We present the results of studies of the processes that evolve in contact zones in the blade-cutting of metals and alloys when the surface layers of tool materials (fast-cutting steels) contain iodine compounds that have formed when the tools have been chemothermally or ion-plasma treated. It is established that iron diodide is the prevailing compo...

The study of efficacy of ozone therapy (OT) in preparation of patients with prostatic adenoma (PA) and cystostoma for transurethral resection (TUR) of PA included 20 PA patients with cystostomic drainage who had undergone PA TUR and preoperative preparation with OT sessions. The control group consisted of similar patients but without ozone pretreat...

Aim of investigation was to study influence of ozone-therapy before the beginning of the transurethral resection (TUR) of the prostate in benign prostatic hypeplasia (BPH) with chronic prostatitis. 500 patients underwent TUR prostate. In the postoperative period infectious complications have been revealed at 74 (14,8 Yo) patients. 40 patients with...

To investigate efficiency of indirect electrochemical blood oxidation in prophylaxis of infectious complications, 28 patients were treated with 0.06% hypochlorite solution (2 infusions, 2-3 days before TURP). These patients belonged to a high-risk group of infectious complications (80% of them had chronic prostatitis, 8 patients had bladder stones,...

The erythrocyte morphology (scanning electronic microscope, the superficial erythrocyte charge, the lipid peroxidation rate and the blood viscosity were investigated in 78 patients, treated by use of hemodyalisis, hemosorbtion, plasmosorbtion and hyperbaric oxygenation to correct the chronic renal insufficiency and the purulent intoxication. The de...

The morphology of blood erythrocytes was examined under a scanning electron microscope and erythrocyte surface charge, lipid peroxidation on erythrocyte membranes, and blood viscosity were studied in 213 urological patients with chronic renal insufficiency (CRI) and purulent intoxication (PI) of different severity. CRI and PI were characterized by...

Examinations of blood samples from healthy subjects and 16 patients suffering from chronic renal failure and purulent intoxication before and after hemodialysis and hemosorption showed changes in blood viscosity and red cell charges in the patients. Blood viscosity diminished following both hemodialysis and hemosorption, whereas red cell electric c...

Red blood cells obtained shortly before and after a hemosorption session from 12 patients were studied in scanning electron microscope. The patients suffered from chronic renal failure and purulent intoxication consequent to urolithiasis and purulent pyelonephritis (10 cases), renal arteriosclerosis (1 case) and prostatic cancer (1 case). Before he...