This article considers the causes of halitosis and methods of the diagnosis. Halitosis, syndrome of bad breath caused by pathological condition of the oral cavity or internal organs and systems, has a significant impact on the patient's social life. Analysis of the composition of exhaled air may become a promising way to diagnose halitosis, as the direct relationship between the compositions of molecules of oxygen, carbon dioxide, nitrogen oxides, ammonia etc. and the causes of halitosis were found. The article's authors review and analysis the methods of measurement of qualitative and quantitative composition of exhaled air. The most common methods include the use of electrochemical, optical sensors, infrared spectrometers and mass spectrometers. The latter method is positioned as the most optimal method of analysis of exhaled air due to its high accuracy, selectivity and sensitivity. The authors' portable mass spectrometer being developed is represented. At this stage it can detect traces of oxygen and carbon dioxide, which inject into the device through the capillary system or membrane one, in gas samples in real-time mode.

Keywords: diagnosis of halitosis, molecular biomarkers, analysis of exhaled air, portable mass spectrometer

The structure and maintenance of housing analyzed. Put more abstract and an extensive understanding of the concept of modernization as the complex development of residential real estate. Classification of modernization of housing types: endogenous, endogenously-exogenous, and exogenous to create a multi-objective optimization model of the process with the required level of adequacy. Theoretical substantiation of complex approach.

Keywords: modernization, endogenous modernization, endogenously is the exogenous modernization, exogenous modernization, reproduction, reconstruction, housing, housing management

In the article a double-gap cavity with anti-phase excitation that has wide application in designs of floating-drift klystrons is considered. One of the ways of reduction of time during machine design of klystron’s cavity is using of the simple analytical expression, allowing to determine the main klystron electrodynamic parameters with a sufficient accuracy for practice. In the article we presented the results of physical and mathematical modeling of the double-gap cavity, the corrected mathematical models were introduced that can be utilized in programs of a prompt optimization of klystron's type devices. The technique of creation of approximate mathematical model in this case was reduced to definition of basic analytical function, and the subsequent approximation between experimental and calculated data by means of a method of planned experiment. In presented work the analysis of adequacy was carry out. Analysis revealed inaccuracy of a resonance frequency of an anti-phase type in chosen ranges of change of influencing factors doesn’t exceed 1%, characteristic impedance- 5%. The received analytical ratios allow carrying out quickly calculation of parameters of the cavity, without labor-consuming and expensive experiments and calculations.

Keywords: double-gap cavity, electrodynamic parameters, mathematical simulation, resonance frequency, characteristic impedance, method of planned experiment

The authours is viewed the new method formalization of computing intelligence, which use molecular interaction model  in the cell. The method parametr adjustment is described. The technological reseach of  marketing verbal proposal  marketing strategies example influence on  the number of potential cliens is introduced.

Keywords: Computing intelligence, molecular interaction model in the cell, bad formalizable management strategies, business planning

This article addresses the energy efficiency of heating systems. It describes the main requirements for modern heating networks. Reviews the main technological and engineering problem-solving tools of energy efficiency. Particular attention is paid to the comprehensive modernization of the old heating system. Offers cost-effective ways of redistribution of funds in the planning of operational costs and maintenance.

Keywords: energy efficiency, heating systems, thermal circuit, heating, water treatment, reconstruction

The paper proposes to perform quality control of the production work on the consolidation of soil foundation with the use of the method. Application of geo-radiolocation sensing allows to specify and complement the results of engineering and geological surveys, as well as capture the changes taking place in the grounds of foundations after work on fixing them. This will provide a comprehensive picture of the grouting in the underlying foundation of the building and provide a reliable and simple quality control work.

Keywords: Geophysical methods,monitoring of the geological environment, landslide hazard.

The article discusses the factors and principles for regulating the real estate market taking into account the interaction between the cost of land and housing projects, and also makes suggestions for a balanced model of regulation of the market.

Keywords: real estate, land, housing, the cost of the regulation.

At the beginning of the 19th century balconies usually arranged in a mansion on the second floor. Most often, they were made of wooden structures with their own vertical supports. In the second half of the 19th century the use of cast-iron and steel struts rail rolling. Balcony plates are in the form of brick svodikov on rails. In tenement houses balconies began to carry out the scheme on the console (embedded in the masonry exterior walls), departure balconies declined.
At the beginning of the 20th century in the construction of a new material - concrete. Supporting structures balconies as steel beams cantilevered embedded in the masonry. Filling the balcony slabs of concrete performed (rubble mixed with concrete, rebar steel rod in the form of a knitted mesh).
In the mid-60 ÷ early 70s. 20th century 5-storey buildings with brick walls were used precast concrete balcony slabs, cantilever embedded in the masonry (250 mm).

Keywords: construction, structural systems, walls, balconies, beams, sealing, coving, method

This article deals with the unification of the elements of wood as on the principle of similarity with the material counterpart. Also estimated the economic benefits of the technical parameters of Glulam. As a result of optimizing the size of these elements. Unification is held on the main criterion of similarity bearing members with the solution graphically. Resulting in optimal size sections are then calculated the opportunity cost of production.

Keywords: unification, glued wooden structures

Research areas of the department cover the working out of energy saving measures and research investigations allowing to introduce into production:
rational algorithm of automatic temperature control system which allows to cut down expenses on fuel and energy resources consumption;
-energy saving and more reliable drive system of oil circuit breakers with a cylindrical linear motor;
-innovative lighting systems;
-discharge monitoring in aqueous medium;
-rapid early disease detection in animals via photoplethysmography and pulse curves analysis;
-automatic control system in frame area;
-methane fermentation of wastes, etc.
All these directions for research allow to increase competitive advantages of agribusiness enterprises of the Udmurt republic

Keywords: LED-light - emitting diodes; linear cylindrical induction motor; biogas units; automatic control systems algorithm; photoplethysmography; automatic temperature control system

The authors of the article examine the problem of electrothermal degradation of fiber optical communication lines arranged on the high-voltage power lines pylons. The possible methods of reduction of high-voltage line electric field influence on fiber optical communication lines were studied. There is also the method of possible calculation and choice of optimal suspension place for fiber optical cable on a high-voltage line pylon. This method can be applied for one of the high-voltage line masses disposition cases.

Keywords: electromagnetic field, thermal-electric degradation, fiber-optical communication lines, high-voltage power lines

In article questions rationing in the field of the address of waste are reflected, methods of definition of standards of formation of waste are analysed, their quality standard is carried out

Keywords: waste, the education standard, definition methods, limits on placement, ecological safety

Finding of small concentrations of various gases as an important task for the environment and for the industry. In this paper, investigated gas-sensitive properties of the films of graphene on silicon carbide to NO2 and vapour C2H5OH. The principle of operation of graphene sensor based on the change of electrical conductivity by reason of adsorption of gas molecules. Temperature dependence of the gas desorption from the surface of graphene is obtained. Mode of getting graphene films with the best gas sensing characteristics is defined. The obtained  results suggest that graphene is a promising material for gas-sensitive sensors  

Keywords: graphene, graphene films on silicon carbide, gas sensor, gas-sensitive of graphene

The problems of mm propagation: rain attenuation,  depolarization and gaseous absorption are considered, and the estimate of the energy potential of wireless mobile data transport networks is given. The dependence on the output power of the distance and the total losses, and the necessary signal levels for different types of modulation being shown.  The estimate of the interfering transmitters effect of side lobes of the antenna is given.  

Keywords: radio wave propagation, mm range, energy potential, rain clutter, side lobes, polar pattern

The article provides an overview of foreign standards : LEED, BREEAM, DGNB, and their comparative analysis . In analyzing the selection criteria of a standard for certification of buildings in Russia , as well as examples of the first objects that are certified according to international standards . American LEED, BREEAM British and German DGNB standards formed the basis for the formation of Russian Green Building standards . In addition, take into account the requirements of Russian standards GOST standards , building codes and other regulations in force in Russia .

Keywords: ecological construction, architecture SCP, certification, standards for green building, green building