Об организации работ по стандартизации на воздушном транспорте с учетом национальных приоритетов

The article analyzes the organization of works on standardization of air transport of the Russian Federation in the framework of the activities of the Technical Committee on standardization "Air transport", according to national priorities.В статье приведен анализ организации работ по стандартизации на воздушном транспорте Российской Федерации в рамках деятельности Технического комитета по стандартизации "Воздушный транспорт" с учетом национальных приоритетов

ON ORGANIZATION OF WORKS ON STANDARDIZATION OF AIR TRANSPORT WITH THE ACCOUNT NATIONAL PRIORITIES

The article analyzes the organization of works on standardization of air transport of the Russian Federation in the framework of the activities of the Technical Committee on standardization "Air transport", according to national priorities

Dynamical evolution of asteroid pairs on close orbits

We apply Kholshevnikov metrics defined in the space of Keplerian orbits to search for asteroids in close orbits. We showed that the Yarkovsky effect was required to take into account accurately to carry out precise simulation of dynamical evolution of the asteroid pairs. Determination of physical and rotational parameters of asteroids is needed to solve this problem. © International Astronomical Union 2020

Assessment of copper and zinc status of farm horses and training thoroughbreds in south-east Queensland

The copper and zinc concentrations in the blood of stabled thoroughbred horses and in Australian Stock Horses mares at pasture, either late pregnant or lactating were determined by an atomic absorption spectroscopic method. The plasma concentration of the trace elements in these apparently normal horses were generally below the "normal" range. The plasma copper, caeruloplasmin copper, whole blood copper and plasma zinc concentrations in the stabled thoroughbreds were 0.76 +/- 0.19 micrograms/ml (n = 82), 0.56 +/- 0.14 micrograms/ml (n = 83), 0.75 +/- 0.18 micrograms/ml (n = 82) and 0.47 +/- 0.09 micrograms/ml (n = 83) respectively. The plasma copper and zinc concentrations of all the brood mares at pasture (pregnant and lactating) were 0.56 +/- 0.20 micrograms/ml and 0.47 +/- 0.11 micrograms/ml (n = 30). The plasma copper concentration of the pregnant group of mares (0.64 +/- 0.18 micrograms/ml; (n = 14) was greater than that of the lactating mares (0.49 +/- 0.21; (n = 16). Variation in the plasma copper concentration was also identified between stabled and farm horses, between horses of different stables and between horses of different ages. The proportion of plasma copper bound to caeruloplasmin was 73 +/- 11.8%. These low concentrations of copper and zinc in the plasma of apparently normal horses are of clinical significance since recent evidence has indicated that copper deficiency appears to promote the development of skeletal abnormalities in foals. An alternative to the use of a single plasma sample to identify the copper or zinc deficient horse was discussed