In order to obtain the best performance of the solar air heaters, it is necessary to find optimum performance conditions. The aim of this research paper is to achieve optimum conditions, by comparing single and double pass solar air heaters. Also, a brief review study of various related research works of all scenarios for a single and double pass and packed bed (including particle technologies)...

introduction: complications of obesity and high fat in children are grave now and future. the aim of this research is comparing percentage of body fat in active and inactive girls using anthropometric parameters.materials and methods: this research is descriptive- correlation that 144 active(n= 70) and inactive(n= 74) girls aged 8 to 10 years old were selected by random cluster sampling method ...

autologous fat transfer offers many qualities of a ideal soft tissue filler. main advantages of fat grafting ensue from the fact that the lipoaspirate tissue is an abundant source of regenerative pluripotential cells. however, the reported rates of fat cell survival vary greatly in the medical literature (10-90%). different techniques of harvesting, processing, and reinjecting the fat cells are...