PROTECTING COATINGS ON URANIUM

The short state-of-the-art review of the published works, concerning problems of the surface protection of uranium and its alloys from corrosion, mainly, from atmospheric and hydride corrosion is given. Are considered physics and techniques of deposition of antirust coatings by condensation from metals and their alloys plasma, generated by the cathode spot of an arc in vacuum and in tenuous atmosphere of inert and chemically active gases. The analysis of protective properties of coatings of a various composition is carried out. The most effective anticorrosive types of coatings and methods of their formation are revealed

ОПРЕДЕЛЕНИЕ КОЭФФИЦИЕНТОВ ЧУВСТВИТЕЛЬНОСТИ ВЫХОДНЫХ ПАРАМЕТРОВ ИНТЕГРАЛЬНЫХ СХЕМ К ВНУТРЕННИМ ДЕФЕКТАМ

The crucial problem of ensuring operational reliability of modern radio electronic equipment is the problem of detecting the integrated circuits with latent (not obvious) defects in the course of production. Such defects shall not be revealed through standard checking procedures specified in standard normative technical documentation.Важнейшей проблемой обеспечения эксплуатационной надежности современной радиоэлектронной аппаратуры является проблема обнаружения в процессе производства интегральных схем, имеющих скрытые (неявные) дефекты. Такие дефекты не выявляются обычными видами контроля, заложенными в нормативной технической документации

Problem-solving tasks in studying agrarian question of history of Kazakhstan

© 2017 Serials Publications.The relevance of the article is to show the problem method of training and a possibility of its application by means of introduction in process of training at lessons of history of Kazakhstan of problem and informative tasks is considered. The purpose, types and stages of work of this technology are defined. Concrete examples of tasks for pupils of 8 classes as the problem of agrarian crisis in the territory of Kazakhstan during his stay as a part of the Russian Empire is subject to consideration (the end of XIX - the beginning of the 20th centuries) are given that corresponds to program material of this age category. The importance of application of the methods aimed at independent search of knowledge and more expanded comprehension of knowledge of pupils reveals. The statå stage of experiment where the initial level of knowledge of pupils reveals is shown in article and the importance of application of problem tasks at further stages of work is proved, questions for questioning at identification of initial knowledge of a subject, and also direct steps in work on drawing up and application of similar tasks are offered. Article Submissions are of practical value for children. having entered life, the child will be more protected from stresses. Problem training forms harmoniously developed creative person capable to think logically, find solutions in various problem situations, capable to systematize and accumulate knowledge, capable to high introspection, self-development itself also corrections. Continuous setting of problem situations leads to the loss of fear by a child to face problems, a child seeks ways to resolve them, and the creative personality, always capable to search is formed

Whole-genome association studies of distribution of developmental abnormalities and other breeding-valuable qualitative traits in offspring of the Russian large-white boars

Identifying genome regions that are directly or indirectly associated with developmental defects and malformations in domesticated pigs can help identify genomic traits used as biomarkers of the structural and functional composition of the body, their metabolic status and genetic diseases as well. Such studies are directly related to the improvement of the economic efficiency, as they allow identification and exclusion of defect animals, who may carry target genes not appearing phenotypically, from the breeding process. In the current work, we have searched for these kind of target genes and genome regions with conducting the genome-wide association studies using PorcineSNP60K BeadChips (Illumina, San Diego, USA). A total of 48 boars of a large white breed of the nucleus farm “Znamenskoe” were analyzed for 21 traits of indicated shortcomings of the exterior and defects of development in 39,153 their offspring.  Calculations were made using a mixed type linear model in package GEMMA. In this study, we selected only 36,704 polymorphic SNPs from an initial 61,000-strong SNP set. After GWAS, we obtained 24 alleles in 11 corresponding genes  (P < 0.1) in the genome of pigs, which are significantly correlated with traits of developmental abnormalities such as anal atresia (ARMC7,FANCC,RND3,ENSSSCG00000017216), limb problems (PAWR,NTM,OPCML,ENSSSCG00000040250, ENSSSCG00000017018) and tremor of piglets (RIC3,ENSSSCG00000032665). Also, co-expression of the NTM,OPCMLand  RND3genes was revealed. This study confirms the relevance of using the single SNP detection according to the single trait approach in associative studies, even for small sample numbers

ЭФФЕКТИВНЫЙ СПОСОБ ВЫЯВЛЕНИЯ НЕНАДЕЖНЫХ КМОП СХЕМ

With increase of complexity factor of integrated circuits and reduction of the geometrical dimensions of integrated structures and detection of unreliable circuits still remains an actual problem. A method of rejection of potentially unreliable circuits most often used in production is imitation of operational modes at a stage of tests. However complexity and duration of realization of the specified method does it practically not suitable in the conditions of mass production of integrated circuits.С увеличением степени интеграции интегральных схем, уменьшением геометрических размеров интегральных структур выявление ненадежных схем по-прежнему остается актуальной задачей. Наиболее часто используемый в производстве метод отбраковки потенциально ненадежных схем - имитация эксплуатационных режимов на этапе испытаний. Однако сложность и длительность реализации указанного метода делает его практически не пригодным в условиях массового производства интегральных схем

Automated device for ice surface quality assessment

В статье представлены результаты оценки качества льда в зависимости от различных условий окружающей среды и подготовки льда. Выявлены оптимальные показатели исследуемых величин, влияющих на качество ледовой поверхности. Цель исследования – определение зависимости коэффициента трения скольжения от параметров водоподготовки, условий намораживания ледовой поверхности, ее температуры, твердости и других параметров, которые можно менять в условиях спортивной арены для конькобежного спорта и выбирать сочетание, что обеспечивает наименьший коэффициент трения скольжения. Для объективной оценки скоростных качеств льда использовали устройства, имитирующие скольжения конькобежца за счет перемещения подвижной платформы, установленной на лезвиях коньков, снабженной модулем, передающим на персональный компьютер регистрируемые значения параметров трения-скольжения коньков с ледовой поверхностью. Для измерения пройденного расстояния устройства использовался метод лазерной дальнометрии. Показана эффективность разработанного устройства и методики его применения для оценки качества льда. Рассматривается влияние температуры поверхности льда, температуры воздуха, температуры заливаемой воды, влажности воздуха на качество ледовой поверхности. Учет этих показателей при проведении соревнований позволяет создавать «быстрый» лед для демонстрации высоких спортивных результатов. Наилучшие значения дальности пробега устройства были зафиксированы при следующих параметрах: температура поверхности льда – от –3,5 до –4,5 °С, температура бетонной плиты – –6 °С, толщина льда – 27–29 мм, температура заливаемой воды – 50–55 °С, срезание верхнего слоя льда ледозаливочной машиной – 100 %. Наихудшие значения дальности пробега устройства получены при следующих параметрах: температура поверхности льда – от –5,3 до –5,4 °С, температура заливаемой воды – 30–35 °С, срезание верхнего слоя льда ледозаливочной машиной не осуществлялось. Results of ice quality assessment depending on various conditions of the environment and ice preparation are presented in article. The optimum indicators of the studied values influencing the ice surface quality are revealed. It is possible to estimate ice speed qualities objectively with the device, that imitates skater sliding. The purpose of the study is to determine the dependence of the sliding friction coefficient on the parameters of water treatment, the conditions for freezing the ice surface, the temperature of the ice surface, hardness and other parameters. The imitation is the movement of the mobile platform mounted on skates, supplied with the module transferring to the personal computer the values of skates sliding on the ice surface friction parameters. To measure the distance traveled by the device, the laser ranging method was used. The efficiency of the developed device and the technique of its application for assessment of ice quality on sports arenas are shown. The dependences of the quality of the ice surface on the surface temperature of the ice, air temperature, temperature of the poured water are considered. Accounting of these indicators during competitions allows to create «fast» ice for high sports results demonstration. The best values of the range of the device were recorded with the following parameters: ice surface temperature – from –3,5 to –4,5 °С, concrete slab temperature – –6 °С, ice thickness – 27–29 mm, filled water temperature – 50–55 °С, cutting the top layer of ice with an ice-filling machine – 100 %. The worst values of the range of the device were obtained with the following parameters: ice surface temperature – from –5,3 to –5,4 °С, filled water temperature – 30–35 °С, the top layer of ice was not cutby an ice-filling machine