The Effect of Personal Health on the Formation of Human Capital: a Metasystem Approach

In article the problem of influence of the personality's health on formation of the human capital is considered. Authors have conducted theoretical researches of the existing knowledge of the human capital and justifications of influence of the personality's health on its formation are given. On the basis of the carried-out analysis it is established that now the personality's health is a significant factor of efficiency of any kind of activity and important quality of the personality, therefore, it can be considered as a factor of formation of the human capital. According to it need of determination of criteria, the indicators of health of the personality influencing formation and development of the human capital was designated

Сравнительное исследование защитных покрытий на термостойкость

Modern gas turbine engines operate under changing temperature loads. Therefore, one of the important characteristics of the protective coatings used on the turbine blades is their high resistance to the occurrence and development of cracks under mechanical and thermal loads. The applied effective systems of internal heat removal of the cooled turbine blades lead to an increase in their heat stress. At present, cracks arising from thermal fatigue are one of the common defects of the protective coatings used on turbine blades. The heat resistance of coatings at high temperatures is determined by three factors: the shape of the part on which the coating is applied, the thickness of the coating and the phase composition of the surface layers or the maximum aluminum content in the coating. Therefore, when choosing a protective coating for these operating conditions, it is important to know the impact of these factors on the thermal stability of the coating. The paper presents a comparative study of various coatings on their resistance to crack formation under cyclic temperature change. The dependence of the heat resistance of the considered coatings on the method of their application and phase-structural state is established. Especially valuable is the established mechanism of formation and propagation of thermal fatigue cracks depending on the phase composition of the initial coating. It is shown that the durability of protective coatings with cyclic temperature change depends on the chemical composition of the coating and the method of its formation. The dependence of the formation of thermal fatigue cracks on the samples with the coatings under study on the number of cycles of temperature change is established.Современные ГТД работают в условиях изменения температурных нагрузок, поэтому одной из важных характеристик применяемых защитных покрытий на рабочих лопатках турбины является их высокая сопротивляемость возникновению и развитию трещин при механических и термических нагрузках. Применяемые эффективные системы внутреннего теплоотвода охлаждаемых лопаток турбины приводят к росту их теплонапряженности. В настоящее время возникающие трещины от термической усталости являются одним из распространенных дефектов, применяемых на лопатках турбины защитных покрытий. Термостойкость покрытий при высоких температурах определяется тремя факторами: формой детали, на которую нанесено покрытие, толщиной покрытия и фазовым составом поверхностных слоев или максимальным содержанием алюминия в покрытии. Поэтому при выборе защитного покрытия для данных условий эксплуатации важно знать влияние данных факторов на термостойкость покрытия. В работе проведено сравнительное исследование различных покрытий на их стойкость к образованию трещин при циклическом изменении температуры. Установлена зависимость термостойкости рассматриваемых покрытий от метода их нанесения и фазово-структурного состояния. Особенно ценным является установленный механизм образования и распространения термоусталостных трещин в зависимости от фазового состава исходного покрытия. Показано, что долговечность защитных покрытий при циклическом изменении температуры зависит от химического состава покрытия и способа его формирования. Установлена зависимость образования термоусталостных трещин на образцах с исследуемыми покрытиями от количества циклов изменения температуры

Late Paleocene Flora of the Northern Alaska Peninsula: The Role of Transberingian Plant Migrations and Climatic Change

For the first time, the Late Sagwon Flora is described from the upper beds of the Prince Creek Formation (Upper Paleocene) at the Sagavanirktok River (northern Alaska Peninsula). The flora is dominated by the angiosperm Tiliaephyllum brooksense Moiseeva et Herman sp. nov. and conifer Metasequoia occidentalis (Newb.) Chaney. The Late Sagwon Flora is most similar to the Danian or Danian-Selandian flora from the middle part of the Upper Tsagayan Subformation (Amur Region) and lower part of the Wuyun Formation (Heilongjiang Province, China). This similarity allows us to hypothesize that the genus Tiliaephyllum, which dominated in the Late Tsagayan Flora, migrated via the Bering Land Bridge from southern paleolatitudes of the Far East to high latitudes of the Arctic Pacific, due to the progressively warming climate of the Paleocene. Additional new angiosperm species are described from the Late Sagwon Flora: Archeampelos mullii Moiseeva et Herman sp. nov., Tiliaephyllum brooksense Moiseeva et Herman sp. nov., and Dicotylophyllum sagwonicum Moiseeva et Herman sp. nov

Comparative study of protective coatings for heat resistance

Modern gas turbine engines operate under changing temperature loads. Therefore, one of the important characteristics of the protective coatings used on the turbine blades is their high resistance to the occurrence and development of cracks under mechanical and thermal loads. The applied effective systems of internal heat removal of the cooled turbine blades lead to an increase in their heat stress. At present, cracks arising from thermal fatigue are one of the common defects of the protective coatings used on turbine blades. The heat resistance of coatings at high temperatures is determined by three factors: the shape of the part on which the coating is applied, the thickness of the coating and the phase composition of the surface layers or the maximum aluminum content in the coating. Therefore, when choosing a protective coating for these operating conditions, it is important to know the impact of these factors on the thermal stability of the coating. The paper presents a comparative study of various coatings on their resistance to crack formation under cyclic temperature change. The dependence of the heat resistance of the considered coatings on the method of their application and phase-structural state is established. Especially valuable is the established mechanism of formation and propagation of thermal fatigue cracks depending on the phase composition of the initial coating. It is shown that the durability of protective coatings with cyclic temperature change depends on the chemical composition of the coating and the method of its formation. The dependence of the formation of thermal fatigue cracks on the samples with the coatings under study on the number of cycles of temperature change is established

Mastering of Technology of Production of Brucellosis Diagnostic Bacteriophages

Presented are technologies of production of brucellosis diagnostic bacteriophages developed on the basis of determination of optimal conditions of the phages reproduction. Stability of the finished product was evaluated using Shuhard control charts