Статьи журнала - Вестник Алматинского технологического университета
Все статьи: 1148
The activity of enzymes associated with aspartate synthesis of wheat at stress conditions
Статья научная
In this work were measured MDH-GOT activities in wheat leaves and grain, in the case of wheat in varieties with differing degrees of tolerance to drought stress and rust infections, growing under normal and stress conditions. We have carried out modifications and optimisations of protein extraction methods for wheat grain and wheat leaf. In this study, a high level of aspartate synthesis of drought stressed plants and rust infected wheat leaves were shown with MDH-GOT assay. We recommend using the activity of EC as enzyme marker for selection of the tolerant genotypes to biotic and abiotic stresses.
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Статья научная
Scientific novelty of work is presented in the form of definition of the main options of measurement of ways of leakage of current and air gaps at research of safety of electric toys. Practical value is represented by the offered optimum scheme of measurement. Safety requirements belong to electric characteristics of toys with a rated voltage of food up to 24B. Results of work can be usedwhen carrying out standardization and certification of electric toys.
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The calculation of technological effort for impact perforation and parts and products marking
Статья научная
The article is devoted to the calculation of technological effort for impact perforation and parts and products marking in mechanical engineering and light industry, the development of devise with two-coordinate movement system. The analytical expressions that bind together the technological effort, properties of the material, instrument parameters and the implementation speed of the operation are obtained during this research. The results of the study can be used to design the device or calculate the technological effort, necessary for the implementation of mentioned operations.
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The development of biotechnological approaches for decontamination of heavy metal pollution
Статья научная
In the course of experiments developed cell selection and received promising alfalfa cell lines thatcan be recommended as source material for plantgipperakkumulator of heavy metals.
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The development of new method for producing dry kumis powder
Статья научная
Kumis is a fermented dairy product traditionally made from mare's milk. Kumis is widely known as medical and highly nourishing beverage received during lactic and ethanol fermentation of mare's milk. But the kumis is still a seasonal product, in winter the mares are not milked. Lactation of mares usually lasts 5-7 months. At the same time it can not be stored for a long period, during 3-4 days sours and becomes unfit for consumption. Therefore, one of the major problems in kumis production is obtaining kumis with extended shelf life. The objects of study are mare's milk and kumis.
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The effectiveness of the waste water purification anion
Статья научная
This article studies the influence of various factors on the sorption of chromium ions in the new anion exchangers Cybber AX 400 and Cybeer ALH 220. The degree of extraction of chromium ions from an aqueous solution on anion exchangers studied is 99,2%.
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The impact of internet to human’s lifestyle and English language
Статья научная
This article isdevoted to the study of positive and negative aspects of the impact of Internet to human's social behavior, also to linguistic process that is characterized by the creation of new words and acronyms in English language.Were identified important spheres of Internet influence, and werestudied new linguistic phenomenon “Netspeak”, were determined advantages and disadvantages of Internet using. By the research were foundthat nowadays “Netspeak” is going beyond cyberspace. During the study were developed ways of resolving the negative effects of the impact of Internet.
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The influence of complex supplements doses on the rheological properties of pasta dough
Статья научная
The article is devoted to the study of the effect of doses of the bioadditive complex on the rheological properties of pasta dough. When studying the rheological properties of macaroni dough, the equipment of the Alveograph company Chopin Technologies was used. It was established that the addition of a complex of bio-additives leads to an increase in the elastic force of the dough with a slight decrease in its extensibility. At the same time, the specific work of deformation increases (up to 172-255 kJ). The presented research results can be used in the development of pasta technologies using a complex of bioadditives.
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The main directions for management of competitiveness of agricultural production
Статья научная
В статье рассматривается понятие конкурентоспособности сельско-хозяйственной продукции и исследуются основные пути, направления, механизм и подходы ее управления. Новизна статьи в том, что разработана программно-целевая модель управления конкурентоспособностью сельскохозяйственной продукции. В результате проведенных исследований установлено, что процессы определения, планирования, формирования, сохранения и повышения конкурентных преимуществ продукции на каждом этапе создания добавленной стоимости для повышения конкурентоспособности сельскохозяйственной продукции повышают ее уровень или сохраняют ее на планируемом уровне.
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The peculiarity of network technology in teaching English process in high schools
Статья научная
This article focuses on the use of blog technology in teaching English to students in high schools. Since the Internet has become an integral part of modern education, the use of various web technologies is one of the requirements for a modern teacher when learning a foreign language in higher education.Blog technologies that have become quite popular in recent years have found application in the educational environment. The use of blogs in the process of teaching English is an effective means for developing writing skills, critical thinking and more.
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The production and research of nonwoven fabric from agricultural waste
Статья научная
Currently, pollution due to textile materials is a crisis that threatens the whole world. Due to concern for the environment, our society has faced challenges when it comes to finding eco-friendly substitutes for textile fibers and leather materials. This can be achieved using renewable or recycled polymers or materials that are either readily biodegradable or easily recycled at the end of a product's life. Thus, the material is made from biodegradable natural resources, which is widely available, is economical and environmentally friendly. The article shows studies on the development of bio-based skin from fruit waste, the difference in the appearance of visual characteristics from banana peel, kiwi and apple residue, and depending on the basis for the cotton gauze material. Also, the article consists of the result of testing this material on a device for measuring tensile strength. The value of the study and the practical significance of this work lies in the possibility of further use of biologically based leather as a substitute for natural or artificial leather.
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Статья научная
Milk and dairy products are often dried to reduce weight, to facilitate transportation, to extend shelf life. For example, dry fermented milk products occupy a special place in the dairy industry. Currently, their assortment is significantly expanding and the approach to food products of this group is qualitatively changing. The article presents the results of drying fermented milk protein products in two ways: using thermal and microwave drying. It was found that the duration of moisture loss in the product during heat drying increased with a decrease in temperature. With an increase in temperature from 400C to 500C, there was a decrease of about 25% in the moisture content of the test samples during 5 hours of drying in the dehydrator. Drying with using of microwaves, the drying time decreased with increasing microwave power. The 900 W power reduced the drying time by 2 times compared to the 270 W power to obtain a 15% humidity result and a water activity indicator in the range from 0.382 to 0.394 units.
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The research on purification methods of oils-polluted soils
Статья научная
Нефтяные загрязнения наносят большой урон экологии. Как правило, утилизация нефтешламов и замазученных грунтов не производится по причине отсутствия оборудования и эффективных технологий переработки. В статье рассматривается необходимость разработки перспективных способов очистки нефтезагрязенных почв и возможность применения замазученных грунтов с добавлением органических вяжущих материалов для укрепления грунтов в строительстве дорог, а также в качестве строительных материалов. К нефтезагрязненным почвам в качестве вяжущего материала добавляется синтетический волластонит. Он улучшает качество строительных материалов, повышает прочность при сжатии, увеличивает коэффициент морозостойкости.
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Статья научная
Статистическая обработка экспериментальных исследований позволила научно обосновать и математически описать оптимизацию параметров технологического процесса при взаимном влиянии температуры и продолжительности проращивания на изменение биологической и пищевой ценности зерна кукурузы. Результаты исследований показали, что при температуре проращивания 240С антиоксидантная активность показывает наибольший результат, чем при 18 и 300С. При температуре проращивания 240С все приведенные показатели на 5 сутки достигают максимальной отметки. Из исследованных гибридов при температуре 240С на пятые сутки проращивания в кукурузе «Арман 689» повысилось ССА в 3,1 раза (на 68 %) по сравнению с контролем. При тех же условиях, в гибриде «Туран 480 СВ» ССА повысилось в 3,2 раза (на 68,7 %), в гибриде «Турген 5/87» - 4,2 раза (на 76 %). По сравнению с гибридами «Туран 480 СВ», «Турген 5/87» в гибриде «Арман 689» ССА выше в 1,3 и 1,03 раза, соответственно в 22,8 и 2,9 %. На основе полученных данных построена математическая модель, позволяющая оптимизировать режимы проращивания кукурузных гибридов.
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Статья научная
Currently there is an acute shortage of fibres and proteins in the human diet, resulting in various diseases. The modern market needs a product capable of diversifying the range in the sector of functional, dietary flour confectionery. To this end, the article shows one of the ways to improve the macronutrient composition of waffles, especially with regard to the protein-carbohydrate component of the product. Laboratory analysis showed that the introduction of pea protein, chicory root syrup and apple fiber into the composition of flour and confectionery increased protein content by 3.3% in wafers made of rice flour only and by 5.6% in waffles made of a mixture of whole grains and rice flour. The amount of sucrose decreased in «Rice» waffles by 2.6% and by 2.3% in «Wheat-rice» waffles, and the amount of fiber on average is 3-4 times more, compared to the control sample. In comparison with the control sample, increased the average number of essential amino acids such as: lysine - in 1.5 times; phenylalanine - in 1.25 times; leucine and isoleucine - in 0.8 times; methionine - in 1.5 times, threonine - in 3 times. Thus, the study resulted in the development of dietary plant based soft waffles with improved macronutrient composition, able to expand the range of functional products and can be recommended for dietary nutrition.
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Статья научная
В данной статье обсуждается концепция способностей, изучаются основные направления ее управления. Предполагается, что в начале 90-х годов ХХ века на туристском рынке началось внедрение множества компьютерных систем бронирования и резервирования. Новизна статьи ˗ ведущие ассоциации объединенных туристских агентств предложили ряд гостиничных компаний о необходимости внедрения данных гостиниц в сеть электронного бронирования. В результате исследования будущие работники индустрии гостеприимства будут изучать современные информационные системы и технологии, используемые на предприятиях индустрии гостеприимства, обучать будущих специалистов использовать на рынке профессиональной деятельности специальные программные продукты и информационные системы.
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Статья научная
His article shows the results of the influence of contamination of flour by bacteria spores on process of bread molding and the establishment of maximum permissible level of contamination for the production of baked goods in packaged form, as well as infection of bread made from this flour with potato illness. Was established the level of contamination of flour with bacteria spores for making bread with extended shelf life -no more 101cfu/g.
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The use of combined structuring agents of various origins in the production of jelly products
Статья научная
This paper is devoted to solving an important task of the food industry - the rational use of food raw materials, including gelling agents of various origins. The innovative strategy of this study is based on the possibility of using gelatin and modified potato or pea starch (MS), as a cheap ingredient in the production of jelly products based on traditional, but expensive raw materials such as agar and agar from Furcellaria - furcellaran. The experimental study has been performed concerning the strength of gel-forming systems ‘gelatin - MS - agar - water’ and ‘gelatin - MS - furcellaran - water’, and systems: ‘agar - water’, ‘furcellaran - water’, ‘gelatin - water’. Mathematical models have been obtained that relate the strength of the investigated gel-forming systems to the mass concentration of their components. The equation has been obtained that allows calculating the mass concentration of the components of the studied gel-forming compositions with the given level of strength of systems. It is shown that for a given level of strength of gel-forming system there is an optimal concentration of its components in terms of the least full cost of the system. The equation that allows to calculate the optimal concentration of components of a combined gelforming system has been obtained. The adequate mathematical model for forecasting the strength of jelly products, depending on the mass concentration of components is obtained. It is envisaged to formulate the initial requirements for the parameters of gel-forming, which will allow obtaining an integral elastic structure at optimum duration of the technological process, by modelling the systems of gel-forming, as a technological system, within the framework of the functioning of individual subsystems (the creation of prescription concentrations and ratios of gel-forming agents). The obtained mathematical models can be used for the analysis of other gel-forming compositions in the presence of the data on the strength of such systems depending on the concentration of components.
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The use of dry hopping technique in brewing
Статья научная
Currently, the application of the dry hopping process is a new technology. This method of introducing hops allows you to preserve unstable aromatic oils. The dry hopping process means the addition of hop products at the fermentation stage of the fermentation chine or kegs after the fermentation process is completed. The dry hopping technology does not give the beer a bitter taste, but as a result of its use, it allows you to preserve volatile unstable aromatic oils that evaporate during cooking: monoterpenes-myrcene , diterpenes-dimircene, sexwiterpenes-β-corpofyllene, etc. Beer prepared using this technology is characterized by a rich aroma of hops, which is not present in traditional brewing technology. Based on the production tasting quality assessment, sensory profiles and physico-chemical parameters of drinks with different concentrations of Goldings hops were determined, in particular, the content of the extract, pH, the content of bitter substances, color, diacetyl content, alcohol content, the degree of fermentation, and according to the results of the profilogram analysis, the optimal dose of hops administration was 29 g/dal.
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Thermal deformation, complex bending and stretching of lithospheric plate in tectonic force field
Статья научная
Plate tectonics implies the rigidity of near-surface Earth rocks and their elastic behavior at geological scales of time. The plates are subjected to tectonic and thermogradient forces resulting in their bending, stretching and thermal deformation. The article considers the new setting of the problem of complex bending and stretching of the axisymmetric lithospheric plate of variable thickness caused by both force effects and uneven heating. The mathematically considered problem is reduced to a differential equation with variable coefficients, the analytical solution of which was first possible to obtain by the method of partial sampling.
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