Limited resource of irrigation water in the South of
Russia is a particularly actual task in the production
of moisture-loving crops, such as rice. To solve the
problem of rational use of water when watering is not
possible without the organization of an automated
water distribution. As it was shown by the analysis of
tools and technologies of regulation of water supply,
the most promising, form tested and used, can be tape
regulators of flow and water level. They have a
simple construction diagram, unpretentious in
operation. However, we have identified a fault –
unregulated leaking, not fully covered through the
bore, which in turn increases the uncontrolled
consumption of irrigation water. To solve this
problem we propose a number of designs, protected
by patents of the Russian Federation, having special
fixture to ensure unauthorized leaks, even in a state
almost close to the fully closed opening expiration
from the regulator. The article comprehensively
considers hydraulic studies of controller initially,
without any additions that contribute to the problem
of eliminating leakage. The proposed study with the
analysis of the distribution of velocities and pressures
in the design of belt regulator, will allow you to have
the basic reference model against which it will be
possible to analyze the degree of influence of
constructive-technological changes at the work the
newly developed devices. For this, we modeled tape
controller in the software package FreeCАD version
0.15, when using SAE - system FlowVision. The task
of modeling water flow were solved in flat statement,
including the moment of full closing of the belt
passage opening of the regulator. For plotting surfaces, lines, levels and cross-section response
functions, we used a software package wxMaxima.
The results obtained allowed a comprehensive
analysis of the work tape of the locking device,
hydraulically actuated device in all modes of the
major factors and, in the future, will help to address
the issue of studying the impact of introduced
technological changes in the design of controllers
In the present article we have building and comparison of linear regression and neural network based mathematical models of raw meat organoleptic evaluation from the main physical, chemical, functional and technological parameters performed
The optimal rations have been found. We have
conducted a research on the assessment of meat
productivity, biochemical blood tests. The chemical
composition of blood and meat has been found. We
have empirically chosen a content area for both chicks
and adults of black African ostriches. The article
shows a selection of optimal rations for feeding of
ostriches; we have also determined the live weight of
ostriches in groups, keeping the chicks safe in groups,
hematological studies of ostriches blood, the chemical
composition of the meat, the efficiency of premixes of
Vitafel S
The article describes the evaluation of reproductive,
fattening and meat qualities of pigs of purebred large
white breed (KB), crossbred ewes, derived from
crosses KB sows with boars of steppe type (ST) CM-1
and three-pedigree animals, obtained by crossing
crossbred ewes KB x ST with imported boars of
specialized meat breeds, such as Landrace (L) Duroc
(D) and pietrain (P). We have studied qualities such as
prolificacy, milk yield, live weight of the nest, the
average weight of one Piglet, the safety of the
offspring to weaning, maturity, which is closely
associated with average daily gain in live weight, meat
content of carcasses, their linear dimensions, meat
productivity, the amount of kidney fat, weight of
carcasses of animals of the experimental groups,
carcass yield
This article presents the results of the study of the relationship of reproductive qualities of breeding boars and sows with their level of natural resistance, as as-sessed by resistance index
The article presents an analysis of the influence of genes PRLR and MC4R on reproductive performance of Landrace sows. The frequency of alleles and genotypes of this marker genes and their relationship to reproductive performance are shown
Researches of improving of effectiveness of ways of fruit-tree stock rooting, stone cultivars of home and foreign selection were carried out at Krymsk experimental selection station. Reliable and effectiveness ways of reproduction of green and senescence cuttings were offered based on the results of this work. Stocks of stone cultivars for given systems of reproduction were allocated
Variability of soil effective fertility and efficiency of summer barley in agro landscape with a complex relief is discussed in this article. Differentiated system of barley fertilizing is offered
On the basis of the data gathered from various districts of Medial Siberia it is mounted, that at trees of the Siberian fir (Abies sibirica) for associations d1.3 =f (dп) and dп =f (d1.3) a build-up of the uniform normative (even at level of a wood band) leads to the significant magnitude of errors, but can be used at study of blanket regularities
The article presents the research results of eight grapes rhizogenesis of different genetic origin of the cuttings after treatment with 0.01% solution of IAA for 24 h. It was found, that the activity of regenerative processes in grape cuttings depends on the varietal characteristics, storage conditions and the activation of IAA. It leads to disruption of existing natural correlations, including suppressing the longitudinal polarity. Root-growing ability of cuttings is a genetically determined feature: the effect of IAA did not cause the stability of the positive reaction; it is determined by genotype and depends on the quality and physiological condition of the cuttings