Problems for the design of low-voltage CMOS op-amps are considered: low voltage headroom for signal swings, increase the swing of input and output common-mode signal and sustainability when the feedback. Ways to implement input and output stages of low-voltage CMOS op-amps for technology 0.13 um at 1 V are investigated. The ways of frequency compensation are investigated. According to the results of modeling the best gain and the largest swing of input and output signal have continuous in time common-mode feedback circuit (CMFB) and the proposed two-stage current mirrors op-amp. These op-amps can be applied at a supply voltage ~ 1 V.

Keywords: low-voltage CMOS operational amplifiers (op-amps), the input and output swing, miller-effect frequency compensation

Considered clean water in swimming pools, on nonionic and anionic surfactants with special adsorbents. Water purification pools plavatelnyx unique, first of all, because the water contains various types of pollution, which it is exposed. Most of these contaminants are introduced by the users of the swimming pool and they have to be removed or destroyed (bacteria, viruses, organic, sweat, hair, makeup, etc.). Treatment of swimming pool water is much more complicated because of the need to carry out her many times, than drinking water treatment, which is carried out one-time. Based on these studies, given technological solution to improve the efficiency of purification of circulating water in swimming pools, ensuring high environmental and economic performance of water treatment.

Keywords: recycling of water, swimming pools, surface-active agents (surfactants), azotoammoniynye organic compounds (AOC), a rapid method of analysis

Problems of the treatment of highly mineralized water from surface sources. Today, more than 70% of rivers and lakes has lost its main function as sources of drinking water. An important problem is to find technological solutions that take into account the territorial features and allows you to create reliable purification of saline natural waters with minimal capital and operating costs. In the present paper presents the results of a study of the composition and properties of natural raw chocolate clay Altonaga field, studied its sorption properties.

Keywords: the quality of water, saline water, surface water sources, the sorbent

Studied mobility planar four-link mechanism of the manipulator in a predetermined area of the workspace. A method for determining the maximum rates for selected destinations for the mechanisms of manipulators with motor redundancy.

Keywords: own properties mechanisms manipulators, mobility manipulators, robots for the synthesis of movement velocity vector

Stat'ja posvjashhena issledovaniju temperaturnyh zon absorbcionnoj kolonny v processe ochistki serougleroda. Issledovanie provoditsja na osnovanii rasschitannyh linii regressii dlja kazhdoj iz 3 temperaturnyh zon absorbcionnoj kolonny. Ishodja iz poluchennyh dannyh, delaetsja vyvod o stepeni vlijanija kazhdoj iz issledovannyh temperaturnyh zon na kachestvo regulirovanija dannogo processa v celom.

Keywords: Serouglerod, absorbcija, regressija, absorbent, shkala Cheddoka, temperaturnaja zona, avtomatizacija, temperatura, matematicheskoe ozhidanie, dispersija

Now the technical condition of residential buildings 60s buildings has reached a high degree of wear when you want to repair their mass implementation of energy rehabilitation of housing and upgrading. This scientific article describes the organizational and technological features of the energy rehabilitation of housing built in the 60s of XX century. The article describes the main types of series of houses built in the period of their technical features of buildings energy efficiency class of buildings. A model of information resource and technological ensuring energy rehabilitation of housing, on the basis of which the selection of energy-efficient solutions of residential buildings at the pre-stage reconstruction or repair. The major elements of this system are the blocks of economic and technical evaluation of design decisions on the basis of which is determined by the most effective ones.

Keywords: organizational and technological support, the organization of repairs, energy conservation, energy efficiency

The purpose of this work was to study the influence of the structural and geometric parameters of the twist drill on the quality of the processed hole and productivity of machining the high strength polymeric composite material – glass fiber epoxy-based plastics that are reinforced by titanium foil. In the structure of high loaded polymeric composite parts the reinforcing layers made from the titanium foil are used. These titanium layers are placed between layers of the winding unidirectional glass fiber tape or the carbon fiber tape. In order to reach the required dimensional accuracy, the macro- and micro geometry of the hole surfaces, to eliminate the overheat, burning, and delaminations of material, need to use sharp-edged tools, which wear out quickly, and remove the drill from the workpiece at frequent intervals to clean the chips from the flutes of the drill and the hole being drilled. We studied the drilling of glass fiber reinforced laminates at the different schemes of sharpening the drills made from the high-speed steel. We present some experimental results of the optimal feed and speed for the studied twist drills, the dependencies of the highness parameters of roughness, and also characters and degree of delamination at starting and finishing hole for the different tools, feed and cutting speed.

Keywords: GFRP, drilling GFRP, delaminations, double-angle sharpening

As subject of researches in the scientific article problems of instrument and methodical equipment of the monitoring system and monitoring of dangerous and harmful production factors of the enterprises of mechanical engineering act. For the solution of an objective the technique of a choice of measuring instruments uniting achievements of fundamental analytical chemistry and practical experience of test laboratories is offered. Leaning on the offered technique, the function chart of the mobile control and measuring complex intended for an assessment of the physical production factors and the chemical polluting substances in air of a working zone determined by express method is developed. The devices which are a part of a mobile control and measuring complex completely cover the list of indicators of the harmful production factors controlled in the course of production control and a special assessment of working conditions. The function chart of a mobile control and measuring complex has a flexible configuration, is capable to be modernized depending on parameters of objects of control and technical novelties in the field of instrument making.

Keywords: tool control, monitoring of dangerous and harmful production factors, technique of a choice of the instrument equipment, measuring instrument, mobile control and measuring complex

The results of experimental studies to determine the optimum frequency of rotation of the drum and the optimum ratios of the mechanical gear Electromechanical actuator gravity mixers. Recommendations on the use of different types of actuators depending on the scope of use of the machines.

Keywords: "gravity concrete mixer, Electromechanical actuator, modular design, experiment, mixing drum rotational speed, induction motor, reducer "

The possibility in principle of using pulp and paper industry waste as a binder for pelletization flotation potassium chloride bases on conducted researches. Defined technical conditions of pelletization flotation potassium chloride using pulp and paper industry’s waste as binder provide product with good commercial qualities, which are yield of marketable fraction (85.71 %) and resistance of granule (29.51 N). The researches for studying conditions of baking were conducted and subsisted defects on granule surfaces. There are two kinds of defects. One of them is inner defect is represented as caverns and flaws. Another type of defects are outer defects. They are represented as crystallized structural arrangements in the form of coreless tube that has net structure and includes fiber and cubic shaped microcrystals. Granule defects form after baking them with temperature higher than 120ºC.

Keywords: flotation potassium chloride; pulp and paper wastes; adhesive; commodity characteristics of fertilizers, defects granules

The article presents a statistical analysis of non-compliance with safety at work over the past few years, the reasons for violation of safety rules and consequences such as industrial injuries, occupational disease and mortality in the enterprises of the Russian Federation. Based on the analysis, the most dangerous in terms of the safety industry are the companies of the construction industry.

Keywords: labor protection, safety requirements, the company building industry, industrial injuries, occupational disease, labor protection measures, ability to work, harmful and dangerous production factors

The dependence of allowing to determine the optimal mode of reducing speed when approaching trains to areas with restrictions to ensure maximum road conditions on the average speed. The presented method will accelerate and refine the calculations in modeling the movement of logging trucks.

Keywords: timber transport, traction calculations, traffic simulation, indicators movement, restrictions, braking

In article reviewed advanced theoretical probability models of process quality formation quality of the surface layer in a centrifugal rotary process (CSO) details. Process CSO reviewed from the point of view reliability. Based on the results of theoretical studies were proposed the dependence of the influence of the main technological parameters centrifugal rotary finishing and strengthening treatment on the roughness of the processed surface, the depth of the hardened layer and the degree of hardening. Analysis of the technology processes CSO let to identify the factors exerting a dominant influence on the productivity and quality of processing. Conducted calculations of the influence the tolerances of the main quality parameters of the surface layer and technology modes centrifugal rotary processing of centrifugal rotary treatment on the magnitude of the coefficients offset instantaneous dispersion and stock accuracy which characterize the reliability of technological processes centrifugal rotary process. By results of calculations were constructed charts. Taking the presented methodology you can choose such a combination in choosing technological processes centrifugal rotary processing what will ensure the required quality of the workpiece.

Keywords: Reliability technology process, centrifugal rotary process, coefficients offset instantaneous dispersion, the roughness surface, the degree of hardening.

A modern trend of scientific publications development shifts toward the network environments to an even more considerable degree. In practice, the new culture of the scientific publications is forming on basis of the global and mini Internet-platforms. The discussion of the comprehension experience and overcoming the different rating problems is suggested in the context of a science webzine “Engineer bulletin of Don”. It is observed that as the position of science webzines becomes stronger in the common space of the science magazines, there is a tendency to revising their evaluation criterion. Besides, the implementation of rates or coefficients prevails, the applicability of which relative to the science webzines is exogenous, i.e. it disclaims the aims of the science webzines. The application of restrictions, worked out within the framework of the traditional paper book-printing technology, is indicated to be unpromising. A new level of the science environment systemacy is suggested to be supplemented with the formalization of scientific evaluation rations, already existing and successfully maintained de facto, within the framework of the webzines – the Internet-platforms.

Keywords: the electronic scientific journal, Internet platform, interdisciplinarity, open access, impact factor, ranking

In the article the automatic drive positioner technology systems increased speed and accuracy on the basis of multi-parameter sensor rotor (MPMD). The proposed scheme, technical solution (MPMD) with improved integral evaluation of several parameters of positional displacement control objects. The generalized mathematical model of the sensor actuator position struktre. Computational experiments by the Runge-Kutta in the environment of the program Matlab-simulink are obtained depending on the basic parameters of an actuator position. When you perform a typical positional cycle The influence of the major geometric, hydraulic and thermodynamic characteristics of the expiry of the compressed air through the nozzle sensor element on its expenditure-Perepadnaya response. It is found that the maximum deviation does not exceed 5% of the reference sensor. This will improve the accuracy of parameter estimation process of positioning and formation of control actions in real space and time.

Keywords: position pnnevmoprivod, mnogopramatrichesky pnevmomahanichesky sensor, generalized mathematical model of sensor, position cycle, sensor performance