The article submits a mathematical dynamic model of varying pressure of the steam, depending on fuel supplying in the boilers
The nuclear lexis of E.I. Nosov`s publicism is considered in the article. The author detected the part of speech criteria of the dominant lexis, analyzed in the diachronic aspect a group of high-frequency nouns that represent the name of a person in the journalistic work of the writer. The study aims to reveal to some
extent the originality of the individual linguistic model of the world of a great Russian writer and publicist E.I. Nosov
We have special demands to the planting of the tilled crops. Unlike grain crops, the tilled crops are sowed in a line with the certain step, which permits to provide the rational placing of the plants on the feeding areas. Due to this, the necessary conditions were made for their further growth and getting of big crops. For planting of the tilled crops all over the world people apply pneumatic precision drills with vacuum seed-sowing mechanisms and the quality of realization of the operation depends on their work greatly. The process of work of the vacuum seed-sowing mechanism can be divided on basic stage, the process of catching a single seed and carrying it out of the layer of the others with the drawing hole is the most responsible among them. The analyses of the work which has been done let conclude that the influence of the agitator on the layer of the seeds in the zone of their catching with the drawing holes increases the efficiency of this process. With an aim of the activation of the working process of the central agitator the authors offer to make its blades in such a way that their working sides would be turned in the direction of rotation of the agitator and the plane of the feed disk. All this let use the agitator not only for activation of the layer of seeds but for their push to the drawing holes of the feed disk. The proof of the offered construction is presented in the article, the results of the comparative experimental researches of the serial and the modernized vacuum seed-sowing mechanisms and the analyses of obtained data are shown, conclusions have been formulated
Черешки листьев, взятых из растений ин витро, девяти межвидовых гибридов винограда: подвоев Берландиери х Рипариа ‘Кобер 5ББ’, Рипариа х Рупестрис ‘101-14’ и сортов (cvs): 'Бианка', 'Зигфридребе', 'Подарок Магарача’, ‘Первенец Магарача’, ‘Цитронный Магарача’, ‘Интервитис Магарача’ и гибридной формы ‘Магарач 100-74-1-5' культивировали на твердой среде NN, содержащей различные концентрации 2,4-D и BА в различных сочетаниях. Для того, чтобы инициировать рост клеточных суспензий, проэмбриогенные каллусы пересаживали в жидкую среду NN, дополненную 1.0 мг/л 2,4-Д и 0,2 мг/л BА. Субкультивирование этих суспензий в жидкую среду NN, дополненную 2 мг/л NAA и 0,1 мг/л BА, привело к развитию агрегатов эмбриоидов, а пересадка в жидкую среду с 0,5 мг/л BА вызвала развитие единичных глобулярных и сердцевидных эмбриоидов. Проэмбриогенные клеточные суспензии, состоящие из преимущественно отдельных клеток, могут быть использованы в трансформации генов и селекции на клеточном уровне с целью уменьшения вероятности появления химерных растений
We consider the economic essence and general rules of the reproductive process in dairy cattle breeding. We have analyzed a modern condition of subsector: change in the numbers of livestock, breed and numerical structure of evaluation dates cattle, the volume of generation of raw milk, the profitability of its production and realization. We have also analyzed the balance of resources and use of milk, level of consumption and dynamics of imports dairy products in Russia. Reduction of volumes of raw milk has resulted into a deficiency of food of its own production, an increase in of import deliveries of milk and of dairy products. As a result of the conducted research we revealed some tendencies, that have a negative impact on the reproductive processes of in dairy cattle breeding: a long period of reproduction, disparity of prices on milk and the products industrial organizations, the destruction of permanent integration ties, high degree of deterioration of the equipment, strengthening of the process technological degradation, non-observance of technology of feeding and livestock, poor use of the genetic potential of animals, monopoly processing and trade organizations, weak susceptibility subsector to innovative technologies. Perfection of reproductive process in the subsector assumes growth of solvency of economic subjects at the expense of reduce the level of disparity in prices, optimization of interbranch of mutual relations, development of cooperation and of agroindustrial integration
The article describes the synthesis and verification of
statistical and system-cognitive models of the
influence of environmental factors on the quality of
life of the population of the region. This stage of the
ASC-analysis is performed in the system called
"Eidos". As a result, we have created and validated
(verification stage) all the specified systemic cognitive
models. It is expected that reliability for the models of
knowledge is sufficiently high for a given subject area,
that is why we can state the discovery of a dependence
of life expectancy and causes of death from
environmental conditions. Typically, knowledge
models are approximately 20% higher in accuracy than
statistical models, which operate on the principle of
positive pseudo-prediction. Making decisions based on
the model of Abs (matrix of absolute frequencies) is
not appropriate because of the different number of
instances of classes (generalized categories) and
dependence of the solutions of this amount. In the
model called Prc2 (conditional and unconditional
percentage distribution) the dependence of the model
values of the number of examples in classes has been
removed, but the accuracy of it is usually same low as
in the Abs. In addition, for decision-making based on
this model, one has to compare the values of
conditional and unconditional probabilities manually,
which is laborious and hardly possible for large
dimensional models. The knowledge model called
Inf3, based on a measure similar to the Chi-square, is
the result of the automated comparison of values of
conditional and unconditional probabilities presented
in the model of Prc1, which is similar to Prc2, and
usually has a fairly high accuracy, especially
considering the high complexity of the subject area,
which we simulated. Therefore, in accordance with the
technology of the ASC-analysis data conversion into
information, and afterwards - into knowledge, it is the
model of Inf3 which is planned to be used for the
solution of problems of identification, forecasting, decision-making and exploring the modeled subject
area, through the study of its models
The analyses of the institutional and management structure in exposure of reasons of low or insufficient management quality, as well as the grounds of suggestions in the improvement of the institutional and management enterpritse structure are represented in the article
We have offered a constructive flow sheet of a root cleaner. Theoretical and experimental studies of roots purification process have been performed. We have also substantiated the main structural and regime pa-rameters of the proposed cleaner
he article discusses postcards with images related to agro-botanic illustration, the possibility of their use as an information resource in the process of the study course on the history of agriculture. We have given the extensive understanding of agro-botanic illustrations, reviewed the goals and objectives of this type of image. History of agriculture in postcards considered on three types of images: art (reproduction and original) and documentary (photo). For each type of images we have illustrative examples with brief comments. The review is presented with a combined collection covering different countries of the world. The article contains examples of postcards with brief comments. It presents an overview of the collection of postcards from different countries, and an analysis of the examples from the series named "Giant vegetables at the farm" and "Apple family". Thus, the images presented on postcards allow us to obtain the following information: the orientation of the agricultural sector areas (main activities: crop production, livestock, horticulture, viticulture, vegetable growing, etc.); Botanical characteristics of crops (agro-botanic illustration; illustration of certain types of technologies of cultivation of crops (cleaning, plant care, plowing, irrigation); documentary image separate record harvests; historical and cultural traditions associated with the agricultural sector, or in separate areas; the promotion of new crops, varieties, and hybrids of agricultural plants and flower crops; information about crops grown in the region, state, specific areas; paintings covering the agricultural labor of a particular country; promotion of local flora; develops observation; teaches us to think and analyze the information
The existing settlement modes of loading of wheels of cars are defined for the conditions which are closest to road service conditions and are reflected in the existing standards. However these standards can't be applied to an assessment of functional qualities of systems of cushioning the cars which are operated in the conditions of agricultural production. The small step of roughnesses, change the cushioned characteristics under the influence of operational factors lead to emergence of the off-design modes of the movement. The purpose of the work was the research of loading of wheels of the car when moving on mulch of grains. For the purpose of obtaining characteristics of the roughnesses influencing car wheels we have recorded a smoothed microprofile of the field and got the statistics, rated autocorrelated function, spectral density of influence of a microprofile. For carrying out the researches the known mathematical model of a car road system was accepted. Influence of speed of the movement, normal rigidity of springs and tires, coefficients of damping of a suspension bracket and tires on vertical fluctuations and loading of wheels of forward and back axes of the car is investigated. The executed researches showed that the movement of the car is followed by fluctuations of indicators of loading of running system with obviously expressed periodic components. The change of the coefficient of damping of a passive suspension bracket and tires in possible limits has no essential impact on loading of wheels. Values of normal roughness of springs of forward and back axes of the car, normal rigidity of tires at which dynamic load of wheels of the car is minimum are established