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Толық мәтін

We present the short derivation of the Gross-Pitaevskii equation and find the average Lagrangian of solitons in the Bose-Einstein condensate. A brief derivation of the Gross-Pitaevskii equation describing the wave function of the atoms of the Bose-Einstein condensate is given.

FRACTAL STRUCTURE OF MULTI-ELEMENT COATINGS

Experimental procedure

And also an energy distribution analysis was performed at 4 points of the surface of each sample. Fractal dimensions were calculated from AFM images at mid-plane height.

Results of the experiment and their discussion

AFM image of the coating Mn-Fe-Cu-Al. Fractal structure of the Mn-Fe-Cu-Al coating. The final choice of model and consequently control parameter has not yet been made.

NONLINEAR RADIATION PROCESSES IN SOLIDS

Processes in irradiated solids

At the same time, the processes in which the defects are destroyed are in the substance. In this case, the defects should be distributed approximately uniformly in the volume, if we do not consider the cascade regions that play the role of fluctuations in the concentration of defects.

The results of modeling radiation-thermal processes

Let us see how the state of the irradiated solid changes with time by means [7, 8]. The formulation (2) can be used to investigate the system dynamics in the evolutionary process, while the entropy (3) describes the statistical state of the system at this time.

SPACECRAFT DISPOSAL IN QUASI-GEOSTATIONARY ORBIT

Controlling the motion of the GSO satellite

In this case, the mass of the ship can be considered constant during engine operation. The change of the main semi-axis is simultaneously accompanied by a change of the eccentricity of [12]:.

Results of modeling and discussions

In this case, the eccentricity of the orbit remains practically unchanged throughout the deposition process. The noticeable difference in engine duration estimates is due to the change in spacecraft mass due to fuel consumption.

RAY STRUCTURAL STUDIES OF POLYETHETRAFLUOROETHYLEN

  • Experimental installations and measurement techniques
  • Results and discussion

In the X-ray diffraction pattern of the modified PTFE, only an intense reflex at an angle corresponding to crystalline form II is observed. Comparison of the X-ray diffraction patterns of the ultradisperse powder and modified PTFE with an industrial X-ray diffraction pattern revealed the nature of the structure of the powder and modified PTFE.

ELECTRICAL PROPERTIES OF QUANTUM NANOWIRES

Electrical properties of quantum nanowires can be described using the approach proposed in our previous works [6, 18]. The structure of nanoscale clusters formed in a film essentially determines the regularities of the electrical conductivity of the considered film.

THE INFLUENCE OF VARIOUS EFFECTS ON THE ORDERING OF LIQUID CRYSTALS LOCATED ON NANORIBBON GRAPHENE

The methodology of the analysis

The studies were carried out in the presence of the electric field parallel to the director. The similar nature of changes observed for the order in the direction of the X-axis. Temperature dependence of degree of order of PEC along Y (a) and X (b) directions at different values ​​of the electric field.

Temperature dependences of the binding energy of clusters' molecules at different values ​​of the electric field.

SURFACE ENERGY AND THE TOLMAN CONSTANT OF HALOGENIDE OF ALKALI METALS

Experimental method

Then R. Tolman and his followers reduced this problem to the version of the dimensional dependence of the surface tension. Rs is the radius of the stress surface; δ> 0 is the distance between an equimolecular separation surface and a stress surface for a plane boundary. The order of magnitude of the parameter δ, called the Tolman length or the Tolman constant, should be comparable to the effective molecular diameter a.

Note that as a function of the W response in equation (3), most physical properties that depend on the particle size or the film thickness (magnetic susceptibility, dielectric constant, thermal conductivity, etc.) can be used and the surface tension of ' a rigid body).

Results of the experiment and their discussion The experimental results are shown in Fig. 3 and in Table 1

Table 2 shows that the thickness of the surface layer of pure metals does not exceed 10 nm. For alkali metal halides, the thickness of the surface layer varies from 80 to 250 nm. It should be noted that the Tolman constant δ = d/2 has no physical meaning as the thickness of a monomolecular layer.

25 Dunstan D.J., Bushby A.J., Grain size dependence of the strength of metals: The Hall-Petch effect does not scale as the inverse square root of grain size.

CALCULATION AND MODELING OF THE MOTION OF CHARGED PARTICLES IN THE QUADRUPOLE-CYLINDRICAL FIELD

Calculation of corpuscular-optical parameters of the quadrupole-cylindrical mirror

Below are the results of the numerical modeling of the quadrupole-cylindrical energy analyzer scheme with A = -0.01. The profile of the external deflection electrode is determined by calculating the equipotential lines of the quadrupole-cylindrical field. Corpuscular-optical parameters of energy analyzer based on quadrupole-cylindrical field at A = -0.01.

Investigation of corpuscular-optical parameters of the energy analyzer on the basis of the quadrupole-cylindrical field is carried out.

Experiment. Obtaining of TiO 2 nanoparticles films

UV irradiation of MB solution reduces the optical density of the dye molecules by ~1.1 times (Figure 2, a). The presence in the solution of film dye of titanium dioxide with the "core-shell" structure leads to a decrease in the optical density in the absorption band of the dye by ~ 3.8 times (Figure 2, d). The dependence of the optical density D of the solution of methylene blue on the oxidation time is shown in Figure 3.

The efficiency of the dye photodecomposition using films based on spherical , that the film based on the "core-shell" structure has the best photocatalytic properties.

THE NATURE OF ELECTRONIC SPECTRA OF SELF-COMBINED RIBOFLAVIN MOLECULES

  • Objects and methods of research
  • Experimental results and their discussion of the influence of the concentration and composition of solvent binary
  • Temperature studies
  • Studies on the spectra of linear dichroism

In our early works, the concentration dependence of the electronic spectra of riboflavin in water was studied. The observed hypochromic effect in the high- concentration range refers to the self-aggregates of the riboflavin molecules. Also, dipole moments in the main μ and μ, * electronic states of the test compound were determined [9].

Study of the process of self-assembly of C60 fullerene molecules in the binary mixture ETHANOL + BENZENE.

THE SAFETY ON A RAILWAY CROSSING BY MEANS OF SYSTEM OF VIDEO ANALYTICS

Object of the research

According to this scheme, the video analysis system tracks motor transport passing through the railway crossing [2]. In case of engine transport stop on the crossing more than 180s, the system turns on the counter current light to slow down the locomotive. Mainly takes place in places far from large settlements. d) the number of processed digital television video signals - not less than 4; .. e) depth of storage of video series archive – not less than 300 hours of continuous recording on the channel; .. e) number of alarm inputs – not less than 2; .. g) number of alarm outputs – not less than 3.

Requirements for the characteristics of the video system's interconnection with interface systems and ways of information exchange.

Requirements to characteristics of interrelations of the video system with interfacing systems and ways of information exchange

The results of the determination of the motor transport stopped at the intersection are given by video analytics in Figure 4. The method, an algorithm and software implementation of the mechanism of dynamic tuning (adaptation) of the complex structure by optimizing it in terms of number are proposed. the used computing resources and an effective way of transmitting information for solving the current identification task are developed. From the results of the work, conclusions can be drawn that the offered approach and the program created for the formation of a complex of video analysis tools can be used in practice during the organization and operation of distributed composite systems of video analysis of objects. since the program allows more efficient use of network resources and significant reduction of the load level.

OBTAINING OF POROUS NICKEL ANODE BY HOT PRESSING AND ETCHING METHODS FOR SOLID OXIDE FUEL CELL APPLICATION

Experimental technique

The next two steps were sintering the sample and etching aluminum from the anode structure. Surface SEM images were performed for the fabricated porous nickel anode after sintering (Figure 4a,b). SEM cross-sectional images of the fabricated porous nickel anode with electrolyte layer, a) Anode cross-section after electrolyte deposition b) Electrolyte surface after deposition.

Surface and cross-sectional SEM images were performed for the fabricated porous nickel anode after pulsed laser deposition (Figure 5a,b).

AUTONOMOUS BIOGAS INSTALLATION WITH SOLAR HEATING SYSTEM

The experimental procedure and the experimental setup

One of the main elements of the BGP is a bioreactor, which is a hermetically sealed cylindrical vessel with a diameter of 1.5 m and a height of 2 m (V = 3.5 cubic meters). From the outside of the cylinder, the container is densely surrounded (in height) with plastic tubes that serve as heating elements (14) and on which a metal wire is stretched. Heating the fermentable substrate to the temperature of the mesophilic regime (t = 35-380C) and maintaining this temperature in the bioenergetic system developed by us is carried out with the help of a helium heater.

Heating of the bioreactor and consequently of the fermentable substrate is carried out through a sealed water heating system containing a heat exchanger (7), a water pump (8) and heat exchangers (14) in the form of a spiral wound on the outside of the reactor, through which the coolant (water) circulates.

Experimental results

The use of this technology will enable the full utilization of the energy and raw material potentials contained in organic waste. The obtained results enable the calculation of biogas plant parameters taking into account local sources of biomass and the use of this energy to save fuel and electric fuel, to obtain high-quality fertilizer and thus to exclude dependence on imported energy carriers and improve environmental efficiency. republic. Long-term field tests of the proposed design of the biogas plant were also carried out, as a result of which its autonomous working capacity in the climatic conditions of the Bukhara region was revealed.

2 Decree of the President of the Republic of Uzbekistan "On measures for the further development of alternative energy sources".

DEVELOPMENT OF ENERGY-SAVING VENTILATION SYSTEM FOR AGRICULTURAL BUILDINGS

To design the energy-saving ventilation system, the differential equation for the temperature field in the ground around the ventilation system duct was looked at. The solution of the differential equation (5) makes it possible to calculate the thermal technical parameters of the energy-saving system [1, 2]. It is possible to calculate the length of the air duct from the condition: St/ 2.

The maximum operating time of the air duct is determined from the following condition Bi// Fo1: 375.

INVESTIGATION OF THE MAIN CHARACTERISTICS OF THE STRAIGHT FLOW HYDRO TURBINE

  • Сomputational experiment
  • Сomputational experiment Defining optimal attack angle of the blades
  • Defining lift and drag forces
  • Defining lift and drag coefficients Lift coefficient is defined as

Therefore, the results of the research of the angle of attack to the hydrowheel blades are presented. Angle of attack is the angle between incoming flow direction and chord line of the blade. Angle of attack is the angle between incoming flow direction and chord line of the blade.

Investigation of the influence of the lift force in accordance with the angle of attack of the water flow on the blades of hydrowheels.

UNBURNED WASTE COAL FLOTATION AGGLOMERATION

Theory of dewatering of flotation waste coal

The hardening of the sludge-limestone mixture is a consequence of the physico-chemical processes that occur in the salt water system, of which the components CaO, SiO2, Al2O3, Fe2O3, H2O, etc. Chemical processes are completed within a few hours. (no more than a day) after the interaction of the binder, in our case powdered lime, with the sludge water with the formation of a loose brittle mass. Heating the mixture at this point is irrelevant, as the digestion process is endothermic.

The process of chemical dewatering of flotation waste proceeds in the kinetic region and is characterized by the exothermic reaction of the dehydrating component with water with the formation of calcium hydroxide from reaction (1) and is accompanied by an increase in temperature and rate of dehydration.

The experimental part

Gorelkinsky, LLP "Institute of Physics and Technology", Head of Engineering Physics Department, Kazakhstan National Research Technical University named after K.I.Satpaev, Amaty, Kazakhstan. Master, Engineer, Head of the Department of Informatics and Chemical Technology, Central Kazakhstan Academy, Karaganda, Kazakhstan. Doctor of Physical and Mathematical Sciences, Professor, Head of Department, Kazakhstan National Pedagogical University Abay, Almaty, Kazakhstan.

PhD, Associate Professor, Head of the Department of Radio Physics and Electronics, Karaganda State University, named after E.A.

TITLE

Ақпарат көздері

СӘЙКЕС КЕЛЕТІН ҚҰЖАТТАР

Kalimoldayev Maksat, Director general of Institute of Information and Computational Technologies, Doctor of sciences, professor, academician member of the National Academy of

Maksat Kalimoldayev, Director general of Institute of Information and Computational Technologies, Doctor of sciences, professor, academician member of the National Academy of

P., “Kazakh Research Veterinary Institute” LLP, Almaty, Kazakhstan, chief researcher, doctor of veterinary sciences, professor, academician of the National Academy of Sciences of

Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Division, Russian Academy of Sciences, 630090, Novosibirsk, prosp.. Translated from Khimiya Prirodnykh

Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Division, Russian Academy of Sciences, 630090, Novosibirsk, prosp.. Translated from Khimiya Prirodnykh

Anna Dybo Doctor of Philology, Prof., Institute of Linguistics of the Russian Academy of Sciences (Moscow, Russian Federation).. Myrzatay Zholdasbekov Doctor of Philology,

Kuzmich Yuriy Vasilevich, «Tananaev Institute of Chemistry - Subdivision of the Federal Research Centre “Kola Science Centre of the Russian Academy of Sciences”;

Paterson 4* 1Yunnan Key Laboratory for Rice Genetic Improvement, Food Crops Research Institute, Yunnan Academy of Agricultural Sciences, Kunming, China,2Helsinki Institute of Life