The article presents the results of theoretical studies of
noise cutting circular sawing machines. Practical
calculation of the noise spectra is based on the
determination of the dependency of the sound pressure
of the noise sources of the object of study. In the sound
system, circular sawing machines sound energy is
emitted by the following sources: disc cutter and the
mandrel. Therefore, the dominant noise sources should
be allocated to the technological subsystem "tool –
mandrel” with a bit less rigidity than the carrier system
of the machine and directly receives the cutting forces
when milling. Thus, it is possible to reduce sound
pressure levels in almost two ways: by increasing
absorption production facilities and (or) decrease in
sound pressure of the noise source. In this work, we
have justified the second way – reduction of the
intensity of acoustic radiation of the source
A complete balanced feed mixture includes sunflower cake, silage, beet fodder and roughage that have nutritional value. For preparation and their distribution it is necessary to have the following facilities under provided with reducing energy intensity and improving the qualitative indicators of processes: for the grinding of sunflower cake and beet fodder we need disk shredder plate with a knife, which makes a shock-centrifugal effect on them; silage and roughage – bearnie in which the cylindrical beater with knives and rotary blade rotor with paired cutting knives, respectively, which perform shock-centrifugal influence on them; for dispensing sunflower cake and beet fodders required automatic volumetric dispensers batch cookers operating on open cycle with the working body of the belt; silage and roughage – automatic volumetric dispensers batch cookers operating on open cycle with disc and drum working body, respectively; to mix sunflower cake – universal, mobile rotary mixer with blades periodic operation portion short-term and multi-stage batch mixing in which the material makes circular motions with a high speed of circulation; beet fodder, roughage – universal, mobile paddle mixers with blades of valencianos form of the periodic portion short-term and multi-stage batch mixing in which the material performs a stochastic motion of particles; silage – universal mobile paddle mixers periodic action of short-term and multi-stage batch mixing in which the material makes circular motions with a high speed of circulation of the blades of valencianos form; for distribution of silage and beet fodder – mobile, been feeders with mechanical loading of the feed ration in which the trays with the milling devices; sunflower cake and roughage – mobile, rotary and conveyor feeders with mechanized loading of the feed ration in which the front rotor with a horizontal axis of rotation and the conveyor of the milling devices, respectively
The designers of competitive seed-cleaning equipment face a crucial task to develop a rational technology of post-harvest seed processing, which would provide output of high quality certified seeds with minimal cost. For determining rational technology of post-harvest processing of sunflower seeds in the seed-cleaning machine based on the grain-cleaning unit ‘GCA-20’, we chose three existing technologies (without fractionation), with various combinations of grain-cleaning equipment, one fractional technology followed by separation of seeds into size fractions (Ø7-Ø8 mm, Ø8-Ø9 mm) on the photoelectron separator. The aim of the study was to determine the priorities of the promising option of post harvest processing by the method of priori ranking using a psychological experiment. According to the survey results, we calculated the coefficient of concordance. After the calculation of the coefficient of concordance its significance was determined using Pearson criterion with the number of degrees of freedom equal 4. The calculated value of Pearson criterion is 17.58, and the table value is 9,488. As the table value is less than the calculated value of Pearson's, we can argue with 95% probability that the opinions of the experts regarding the priority technologies are assessed by the coefficient of concordance and the consistency of the researchers is not accidental. After checking the coefficient of concordance on Pearson criterion a chart of ranking options was built. As a result of the psychological experiment there was determined the rational variant of the technology of post-harvest sunflower seed processing. According to this technology seeds need to be fractioned into two size fractions (Ø7–Ø8 mm, Ø8–Ø9 mm) on the photoelectron separator at the final stage of seed separation in seed-cleaning complexes. This technology will allow us to increase the output of high-quality seeds and reduce their content in the waste (85.52 to 65.60%)
A set of actions aimed at preserving seed quality is the task of primary importance, which is expected to produce effective results. To implement this task it is necessary to prepare high-quality seeds by cleaning and sorting sunflower seeds on air-sieve grain cleaning machines. To determine the rational scheme of cleaning sunflower seed piles of the ‘Lakomka’ variety on the air-sieve grain cleaning machine ‘MVU-1500’ a qualitative analysis has been carried out. Cleaning sunflower seeds is carried out by an air stream by one or two sieves for separating large impurities and by two sieves, one of which separates milled seeds into the overseeding ,with the second dividing the whole seeds. In such a scheme of cleaning sunflower seeds, purity corresponds to the 3rd class of seed material and has some disadvantages. The disadvantages are as follows: the gathering seeds in sieve Ø5.0 have low individual weight and the sieves show low quality of work. To facilitate the work of the sowing sieves a grading sieve is installed, which will separate 50% of the seeds into the gathering. The size of the openings in the grading sieve is selected with the help of the correlation table. The sieve for sunflower seed variety ‘Lakomka ‘will be Ø 3.6, which will select the most valuable seeds with weight above 90 g from the purified material thus improving the productivity and performance of the sowing sieves. A promising scheme of cleaning sunflower seeds is the air flow rate equal to 4.43 m/s, with one grading sieve of Ø 3.6 and two sieves of Ø 7 and Ø 3.6 mm in grain cleaning machines that will allow you to get high quality seed material that meets the requirements of GOST(Russian national standard) for seed material
The article is devoted to solving the urgent task, which is improving the accuracy of transient simulation modes of power supply systems of sugar factories. The material of the article is exploratory in nature, manifested in the fact that we have studied various mathematical models designed for the analysis of symmetric modes of deep bar induction motors. A number of the provisions of article have scientific novelty, which lies in the approach to the choice of the coordinate system for modeling deep bar induction motors. We have formulated the requirements for transient analysis method for deep bar induction motor. We have developed the mathematical models of high-voltage induction motors in different coordinate systems for the analysis of steady-state and transient modes of operation. Based on double-circuit rotor model of induction motor, an analytical expression for the frequency characteristic of the deep bar induction motor is obtained. As an example, we have calculated and presented real and imaginary parts of the frequency characteristic of the induction motor type 2АЗМ-2000 with slip s = 1. The mathematical models of induction motors allow using mathematical apparatus more efficiently to explore different symmetrical modes of engines. The study proposed to use transients in the power supply systems of sugar factories for the analysis. The authors suggest an approach to modeling, which can also be useful for modeling induction generators
The odometric compression of sand with constant rate of loading (CRL) or constant rate of deformation (CRD) and continuous registration of the corresponding reaction allows to identify the effect of stepwise changes of deformation (at the CRL) and the power reaction (at the CRD). Physical modeling of compression on the sandy model showed the same effect. The physical model was made of fine sand with marks, mimicking large inclusions. Compression of the soil at the CRD was uneven, stepwise, and the strain rate of the upper boundary of the sandy model changed cyclically. Maximum amplitudes of cycles passed through a maximum. Inside of the sand model, the uneven strain resulted in the mutual displacement of the adjacent parts located at the same depth. The growth of external pressure, the marks showed an increase or decrease in displacement and even move opposite to the direction of movement (settlement) the upper boundary of the model ‒ "floating" of marks. Marks, at different depths, got at the same time different movements, including mutually contradictory. The mark settlements sudden growth when the sufficiently large pressure. These increments in settlements remained until the end of loading decreasing with depth. They were a confirmation of the hypothesis about the total destruction of the soil sample at a pressure of "structural strength". The hypothesis of the "floating" reason based on the obvious assumption that the marks are moved together with the surrounding sand. The explanation of the effect of "floating" is supported by the fact that the value of "floating" the more, the greater the depth
In February of 2016, the Russian Ministry of Health
confirmed the guidelines on functionality introduction
of medical information systems for medical
organizations (MIS MO). The required MIS
development levels (of basic and advanced
functionality), the capacity status (required and
recommended) and a set of subsystems were defined
there. One of the subsystems is the "Information
support of patients" and all of its functions, being
advisory in nature, represent the advanced set of MIS
functionality, namely: the support for information
terminals and screens, as well as providing the patient
or his legal representatives with the access to medical
documentation and background information.
However, the opportunity to make an electronic
appointment to see a doctor on your own plays the
leading role as the most widespread and socially
oriented medical service. The research is concerned
with the issues of the e-registry work support (ER) via
the data terminal for patients, including printing the
appointment tickets, made via the data terminal. The
paper suggests a new patient oriented algorithm of the
prompt way to make an appointment to see the doctor.
The idea is simple – avoid a large number of clicks on
the ER interface tabs and immediately suggest the
most appropriate time of reception, basing on previous
patient visits. The algorithm was tested on the infomat
software, run by "Smartcity" in MO of Krasnodar
Region and used to make the appointment to see a
doctor by patients on their own, without any
assistance of registry staff in MIS
The article presents results of research on drying a
slurry consisting of distilled water and finely chopped
cooked chicken protein of table eggs. The suspension
is placed in a Memmert oven, which has temperature
of 60 °C. In the process of removing moisture when
drying the slurry of water - boiled protein we
examined kinetics of its drying and performed
chronological photographing of conformation of the
system of water - boiled protein. The final weight of
the protein remaining after evaporation, was 0.06 g
corresponding to 26% by weight of cooked protein
source in an amount of 0.23 g. The analysis of the
system appearance including the evaporation of the
water showed that the protein was originally white,
and this color does not undergo any changes until 35
minutes of drying, i.e. when the main base is water.
Upon further drying of the suspension, starting with 40
minutes, boiled protein literally "melts" in the
surrounding water residues; and as it is disappearing,
becoming more and more transparent. Meanwhile, the
forms of the protein are becoming round and
transforming into the form of liquid crystals. The final
phase of the protein is a solid transparent film
The NP-problem of discrete optimization of
consumption of non-renewed resources is considered.
The weights of edges of the graph of resources set cost
of consumed resources. It is offered to use the
transitions of discrete system conditions on the
complete graph with number of vertexes, equal to
quantity of discrete resources, for the problem
decision. The purpose of such system is construction
of a chain of the predetermined length and the
minimum weight on the complete graph. The problem
factor is factorial growth of number of variants of
chains on graph at linear growth of quantity of
resources. The main idea consists in a use of found
statistical regularities of transition ranks of discrete
system at construction of chains with the minimum
weight on graphs of the any size. Use of ranks allows
to abstract from concrete weights of transitions and to
find the property inherent optimum. In this article, the
structure of discrete system is presented and its
functioning in a mode of analysis of ranged decisions
is described. Distinctive feature of the presented
system is use of the generator of ranks, the generator
ranged chains and the statistics block. They are used
for definition of distribution of suboptimum decisions.
In addition, the article contains the description of
structure and functioning of discrete system in a mode
of synthesis of suboptimum decisions on the basis of
the found distribution of probabilities of local
decisions. Novelty of the offered approach to
construction of solvers of NP-problems is in using
empirical functions from ranks of local decisions to
control the search
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