A new method for short-circuit fault location is proposed. The based on instantaneous signal measurement and its first second derivatives, which are the novel elements of current approach. derivatives allow associating a precise time stamp to occurrence fault. Due retardation phenomena, difference between times in registered two detectors can be used locate We offer several mathematical models ...

In a recent paper, we have shown that the flattening of galactic rotation curves can be explained by retardation. However, this will rely on temporal change mass. our previous work, kept only second order terms retardation time in analysis, while higher Taylor expansion where not considered. Here consider analysis to all orders and show indeed suffice, neglected.

this is a discriptive study with the main goal to identify personal, pregnancy and delivery characteristics of mothers given birth to mentally retarded child. this study has been conducted in the rehabilitation center in tehran in 1994. a total of 150 women took part in this research, and the tool of was a check list which was completed by researcher through interview. the findings were illustr...

materials and methods a number of 100 patients with imr, normal karyotypes and negative fragile-x and metabolic tests were screened for subtelomeric abnormalities using mlpa technique. results nine of 100 patients showed subtelomeric abnormalities with at least one of the two mlpa kits. deletion in a single region was found in 3 patients, and in two different subtelomeric regions in 1 patient. ...

in this work, effects of homogenization time of 3 to 13 h at 1200 °c on the grain refinement of as-cast aisi 301 stainless steel after different hot rolling conditions were investigated. the results showed that the minimum grain size of 16±7 mm was achieved when homogenization took place at 1200 °c for 9 h followed by hot rolling at temperature range of 1000–1200 °c with strain of 0.8 and strai...

 In this work, effects of homogenization time of 3 to 13 h at 1200 °C on the grain refinement of as-cast AISI 301 stainless steel after different hot rolling conditions were investigated. The results showed that the minimum grain size of 16±7 mm was achieved when homogenization took place at 1200 °C for 9 h followed by hot rolling at temperature range of 1000–1200 °C with strain of 0.8 and stra...