A direct comparison was made between the air kerma primary standards used for the measurements of low-energy x rays at the National Institute of Standards and Technology (NIST) and the National Physical Laboratory (NPL). The comparison was conducted at the NPL using NPL reference radiation qualities between 10 kV and 80 kV. The results show the primary air-kerma standards to agree within 0.6 % ...

The article states that at the current stage, one of most urgent issues is search for latest views and methods teaching children. Increased attention to development child's personality associated with possibility updating qualitatively improving system preschool physical education. relevance chosen topic also due fact there a debate among pedagogues-theoreticians about extent which qualities de...

The aim set out in Article research is to find new of methodical approaches improve the methods development coordination abilities young players. Despite proven efficacy differentiated approach preparation sports reserve, no data found, taking into account typological features display properties nervous system children involved football. Methods and techniques. We used statistical determine val...

Female waist-to-hip ratio (WHR) has generally been an important general predictor of ratings of physical attractiveness and related characteristics. Individual differences in ratings do exist, however, and may be related to differences in the reproductive tactics of the male raters such as pursuit of short-term or long-term relationships and adjustments based on perceptions of one's own quality...