A thermal physical and mathematical model of laser cladding with TiNi on steel was developed which allows us to monitor the formation of the structure and the properties of the surface layer. A description of the model included assumptions and simplifications; analysis of the energy balance; numerical modeling of thermal processes; evaluation of the temperature distribution; experimental verification of the obtained solutions. The composition of the steel and TiNi alloy was examined as a two-layer material with different thermal characteristics. The energy balance of the system was described with a heat equation in a three-dimensional form. The main channels of the radiation energy costs were taken into account: absorption surface of the product, loss owed to the reflection surface, energy absorbed by the coating which did not come down to the base material. To solve the differential equation of heat conduction we used the Fourier integral method. In assessing the temperature distribution we have reviewed a dimensional problem when exposed to a point source of the Gaussian distribution in a pulsed mode. Computer calculations used MathCAD graphs of temperature changes at different depths of the TiNi layer and the steel substrate. The results obtained allowed us to develop the recommendations for optimizing the technological parameters of laser cladding of TiNi. The simulation of thermal processes significantly reduces the time and resources required to develop the technology, allowing prediction of the quality of the surface layer during the development of the technology and promoting the adoption of efficient technical and technological solutions
The relevance of an effective system of professional
development for science-intensive and high-tech
industries demonstrates not only the need to promptly
respond to the global challenges of the modern
economy, but also the presence of professionals able to
reform the Russian economy in conditions of adverse
effects of the sanctions. The leading role in these
processes is assigned to highly qualified staff, which is
formed in the process of training specialists within the
system of continuous professional education and
training (CPEandT). Expansion of the use of the
system of CPEandT in modern educational technology
(MET) opens new possibilities for advanced training
and monitoring of this process by formalizing
mechanisms of didactic content. We have developed
specific mechanisms of formalization of the bestknown
relationship between the information flow of
didactic content and scope of knowledge of
professional disciplines plan of professional
development, as well as the possibility of their use for the monitoring of the process. The article discloses
mechanisms of formalization of the process of
professional development for science-intensive and
high-tech industries, which will actively contribute to
their successful implementation and monitoring
Recipe and diet of people engaged in mental activities determine the peculiarities of their lifestyle. It relates to sedentary lifestyle, sitting position, high stress loads. Features of the lifestyle of this population require the application of the fundamental laws of nutrition and a careful calculation of physiological needs in nutrients. Relatively small muscle load and the habit of high calorie food leads to weight gain, obesity and diseases of the cardiovascular system. Based on biomedical research and analysis of respondents’ data, we have formulated basic requirements for the development of biologically safe food products for people engaged in mental work. The article also assesses the chemical composition of the animal and vegetable raw materials grown in the Kuban. We have developed a technology of fish and fish products and meat and cereal canned food for people engaged in mental work. As a result of experimental and analytical studies, we have substantiated the composition of food and medicinal plants for obtaining antioxidant complex. We have also developed a CO2-technology for production of the antioxidant complex
The work is done in a scientific and practical ways to
minimize power losses in the transmission of
electricity in the interregional distribution networks
from the sources to the consumer by the use of tasks,
ensuring the gradual improvement in the support
program, not only from the standpoint of the efficiency
of reduction of transported power loss, but also due to
a significant decrease the complexity of the
calculations. The resulting shortage of electricity
power associated with its transfer to the electricity
networks, has demanded the need to find possible
ways of reducing the value of electricity losses during
transportation, both by improving and by optimizing
distribution net-works schemes. Consolidation into a
single set of electrical equipment, called the power
cluster is connected to the sources of power and energy
consumption, make better use of new principles of
control technology and the transmission of electricity,
on the basis of an automated monitoring system,
ensuring the redistribution of energy flows and
optimize them. The process of electric power
transmission and reduction in electric power loss can be considered on the basis of linear programming
problems, and their modification in the form of a
transportation problem, and as a result, the transport
matrix. On this basis, manipulating the data table, we
can find acceptable solutions, well and then determine
the best of them. As examples, this work has carried
out the study on the basis of the three methods -
"northwest corner", the method of minimum unit cost
of electricity transport, as well as the method of the
potential. The use of these three methods yielded
acceptable solutions, to identify the most appropriate
for the number of steps carried out at the decision, to
reveal that the winner is the potential cost method
Present article is devoted to research of sorption
properties of various filtering materials. The various
types of filters, such as fabric, frame, granular filters
are considered. The principles of work of each type of
filters, feature and difference them from each other are
considered. The conditions of their application are
investigated. Process of filtering through a layer of
granular loading also is described. The physicochemical
parameters of some granular materials
including sand, hydroanthracite-Р, granite road metal,
volcanic tuffs, and expanded vermiculite are given.
The comparison of oil capacity of some materials is
considered at their use as a filtering material and oil
collectors. We have described sorption features of
activated carbon, used as a filtering material for
clearing waters of petroleum and petroleum. The
article has a conclusion about their prospects and the
efficiency of application when fighting with petroleum
pollutions
The article presents a constructive-technological
scheme of leaf separating apparatus for harvesting tobacco
leaves. We have performed a theoretical analysis
of the process of separating tobacco leaves from the
stalk. The dependences characterizing the trajectory,
speed and acceleration of an arbitrary point of the cutting
edge of the drum were obtained
The results of the study of physiological and biochemical parameters of plum plants, changing when infecting plants Plum pox potyvirus (PPV) are shown. It was found that the infected leaves at the stage of full development of the content chlorophyll a reduced by 30 % in variety Stanley and by 6 % in Kabardinskaya rannaya, chlorophyll b in less than 49 % at Stanley, 37% in Kabardinskaya rannaya, carotenoids are less than 22 % in the variety Stanley and by 11% in the variety Kabardinskaya rannaya . Leaves infected with the virus pox (PPV), in comparison with not infected, the amount of protein were decreasing: in the variety Stanley by 21 %, in the variety Kabardinskaya rannaya by 28 %. In the period of active growth of the leaves change in the content of pigments and protein is more intense. The content of lignin in the tissues of leaves, infected with the virus pox (PPV), in comparison with not infected in the variety Stanley was below on 13 % and in the variety Kabardinskaya rannaya - 8 %. The total content of water of infected tissue on the stage of a full-time development is reduced in patients leaves as compared with not infected 11 % in the variety Stanley and by 1 % in the variety of Kabardinskaya rannaya. Throughout the period of development of foliage studied parameters vary depending on the variety
A variety determines the direction of use of grape
products and plays a leading role in improving its
quality. Preservation of genetic resources of grapes
and their studying are very important for modern
science. The studied material makes it possible to use
the selected genetic characteristics for breeding new
varieties of grapes, taking into account the
requirements, and introducing them into production, as
well as highlighting the most valuable varieties for
transferring them to the state variety testing. Among a
wide variety of grape varieties, in the ampelographic
collection there are varieties of AZOSVIV selection of
the technical direction: Krasnostop AZOS and
Dostoiniy, for which complete phenotyping was
carried out. The phenological and agrobiological
information on the grape varieties studied for 2015-
2017 is collected. The presented grades of grapes of
the technical direction are characterized by high
quality of production. The wines from the varieties
Krasnostop AZOS and Dostoiniy are competitive,
characterized with high consumer properties; they
enjoy the well-deserved fame and were nominees of
exhibitions and holders of diplomas repeatedly. Based
on the results of microsatellite profiling, the varieties
showed a sort-specific general combination of alleles.
At the same time, in each locus there is one identical allele, which corresponds to the fact that the varieties
Krasnostop AZOS and Dostoiniy have one common
parent (Phylloxer-resistant Gemete). The received
formulas of a variety (DNA-passports) in practice can
be effectively applied to determine the cleanliness of
planting stock and plantations of grapes, specification
of the parent forms of the sample and in the disputed
questions of the authorship of the variety. The study
was supported by Federal Agency for Scientific
Organizations program for support the bioresource
collections
In this work, we investigate the problem of collisions of
particles linked to the singularities of the gravitational
field in the Ricci flow. A system of non-linear parabolic
equations describing the evolution of the axially
symmetric metrics proposed. We consider the metric
having axial symmetry and comprising two singularities
simulating particles of finite mass. There was
numerically investigated the change of the metric in the
collision of particles. Two formulations of the problem
have been considered, one of which scatter particles after
the collision, and the other as a result of the merger of
two particles, a new stable static system, which can be
interpreted as a new particle. The initial and boundary
conditions using the exact solution of the static problem,
so the collision persist particularly metrics caused by the
presence of particles. In numerical experiments
determined that the collision of the particles in the Ricci
flow leads to the formation of gravitational waves,
similar in structure to the waves, registered in the LIGO
experiment. Consequently, we can assume that the
observed gravity waves caused mainly by transients
associated with the change in the metric system. A
model describing the emission of gravitational waves in
the collision of particles in the Ricci flow proposed. The
influence of the parameters of the problem - the speed
and mass of the particles, on the amplitude and intensity
of the emission of gravitational waves was numerically
simulated
ЖИВОТНОВОДСТВО, КРУПНЫЙ РОГАТЫЙ СКОТ, ДИСФУНКЦИЯ ЯИЧНИКОВ, ЭНДОМЕТРИТ, БЕСПЛОДИЕ, СУБИНВОЛЮЦИЯ МАТКИ, ПОЛОВОЙ ЦИКЛ, ПЕРСИСТИРУЮЩЕЕ ЖЕЛТОЕ ТЕЛО, КИСТА ЯИЧНИКОВ, ГОРМОНЫ