The article presents the analysis of mechanize processes of soil processing and new constructions of universal chisel loosening and combination sowing unit for seedbed soil structures loosening
Criterions of the choice of electronic blocks of calculate technique means, that require special (higher) attention in point of view of their diagnostic and technical state prognosing, are offered in this article; an example of using of the hierarchies analysis method to determine such elements is considered
In modern economic conditions, the competitive
advantages of enterprises are human resources.
Business leaders need to create interest among their
staff in achieving their tasks to the employees was
in the desired direction for the organization. The
article reveals interconnection between the process
of stimulation of the personnel in the enterprise and
competitiveness of employees. Competitive
personnel are regarded as the main source of the
profit of the organization, as the resource companies
in which to invest on an ongoing basis. The author
considers objective and subjective factors, affecting
the competitiveness of the staff and stages of
creation of effective models of staff incentives. In
particular, special attention is paid to assessing staff
learning motives of employees and demotivational
risks, as well as to distinction of such concepts as
"motivation" and "stimulation". The work describes
the elements and means of stimulation, as well as
three types of incentives: motivation, reward, and
coercion. We have determined their impact on the
competitiveness of employees of different groups. It
is found out that the main instrument for
implementing the strategic goals of the company are
competitive employees, and that the presence and
support of such personnel should be aimed at the
management of the company in modern conditions
of managing
The aim of the study is to determine the parameters of the Archimedes spiral to construct the geometry of the disc of the shredder of long-stemmed feeds. The article describes the sequence of constructing the curved portion of the geometry of the disc of the shredder of long-stemmed feeds, based on Archimedes spiral. Criteria for building the disk on the second and subsequent turns of the spiral of Archimedes and obtained the dependence of disk diameter from the size of its protrusions. The conditions of Archimedes spiral construction depending on the number of disk protrusions are determined
A method of obtaining insertion mutants for the hoc
gene, which encodes for the main phage antigen, was
developed on the model of bacteriophage T4. This gene
was cloned in the plasmid pBSL0+ and was disrupted
by insertion of foreign DNA. The phage mutants were
obtained by in vivo phage-plasmid recombination. The
construction of insertion bacteriophage mutants was
carried out in two stages. The resulting mutants on this
procedure could be grown on wild-type E. coli strains,
which is convenient for the production and use of these
phages in therapy. The mutants obtained had reduced
antigenicity. At the same time, the yield of the mutant
strains was high when they were grown on the
non-suppressor E. coli laboratory strains. A number of
stages of purification of the bacteriophage mutants
obtained were performed. Preparations have been
studied by transmission electron microscopy and mass
spectrometry. By several periodic cultivations of the
mutant bacteriophages, it was shown that mutations of
this type are stably maintained during more than 50
generations. T4 related bacteriophages of the family
Myoviridae, for example, T-even, have the significant
homology amongst their genomes, which makes
possible to produce similar mutants. Thus, our method
was developed to obtain mutants with reduced
antigenicity which can be used for both the treatment of
systemic infections, and diarrhea in the case, when,
bacteriophages penetrate into the bloodstream. Such
phages can be used in medicine and veterinary. The
reported study was partially supported by RFBR,
research projects No. 13-04-00991, 16-44-230855
The article consists the results of scientific researches about modern state of grain and elevator business. It describes established trends in the government regulation of grain market. The author motivates the practicability of the state financial support for construction mini-elevator by the grain producers
The most important physical properties that characterize the substance are density and saturated vapor pressure (SVP). These parameters are required for the development of new technical processes in the petroleum and chemical industries, design of pipelines, pumping and fuel equipment, etc. Existing methods for calculating of density near and on the saturation lines are imperfect, and finding of the analytic dependence of SVP of petroleum products from all defining parameters associated with great difficulties. The purpose of present work is an experimental research and development of methods for calculating the density (specific volume) near and on saturation lines, and saturated vapor pressure of gasoline straight-run fraction derived from petroleums from three fields: Mangyshlaksky, Trinity-Anastasevsky and West Siberian. The choice of objects for research is due to the necessity of creating methods for calculating of density and SVP of oils obtained from various hydrocarbon group composition petroleums. Area of state parameters in the present work by temperature (20 ÷ 320°C) and pressure (0,03 ÷ 30 MPa) provides the ability to research gasoline fractions to supercritical regions. Measurement of density and SVP of petroleum fractions performed with help of a specially created for this purpose experimental installation
The article presents innovative technologies and developed methods and devices for drying chicken manure. Ways of their optimization on the basis of screw aggregates and a calculation technique for introduction in production are offered. The results of a long-term research into the search for and development of innovative technologies for the construction of a methodology for calculating not only a device for drying chicken manure with subsequent introduction into production, but also a device for drying bulk materials of agricultural purpose are shown. An example of thermal calculation and selection of the parameters of a drying device is shown on the basis of screw aggregates
In the article with the help of a technique, based on discretization initial problem of time variable and the method of basic potentials, is constructed the approximate solution of the second two-dimensional problem for the equation of diffusion with depending on concentration coefficients and source function. The general view of the approximate solution of this problem is reduced. On concrete example convergence of the approximate solution of the problem to the exact is shown
The article presents a technique of short-term
forecasting of water level in the river bed of a
mountain type using Markov’s chains