The performance of solar systems depends on the effective incident energy capture surface. This factor is dependent geographic position, orientation surface, atmospheric conditions, and other geo-climatic factors. Solar trackers, typically uni- biaxial, are used to optimize radiation via movement plane incidence these devices. A reliable estimation gain trackers with respect a fixed surface fac...

Maternal nutrition is one of the most important factors affecting birth weight of infants. Vitamin is very important in this regard. Pregnant women’s need to multivitamin as well as their weight gain can lead to weight gain and birth weight in infants. Although body weight gain is desirable in most individuals with lower BMI, this matter could be problematic in those with high BMI. In this stud...

Adolescence is a period of physical, cognitive, social and psychosexual changes. These developmental tasks make adolescents particularly vulnerable to life stress. The purpose of this study was to assess high school students' perception of stress from daily events and to identify its associated factors. A total of 1,195 high school students were selected via stratified cluster sampling method f...

Improvement of livestock has focused on the selective breeding of individuals with superior phenotypes. With the development of increasingly advanced statistical methods that maximise selection for genetic gain, this simple approach has been extremely successful in increasing the quantity of agricultural output. However, information now available on the organisation and functioning of the genom...