The dynamic behavior of three high manganese steels with very different stacking faultenergy (SFE) values (4-30 mJ/m2) were studied using high strain rate torsional tests. The hotrolledmicrostructure of the steel with the lowest SFE of 4 mJ/m2 consisted of a duplex mixture ofaustenite and ε-martensite, but those of the other two steels were fully austenitic. The deformedmicrostructures were stu...

many studies have shown the effectiveness of photorefractive keratectomy (prk) in correction of vision in low and moderate myopia. to evaluate the results of 193-nm exeimer laser photorefractive keratectomy for highly myopic eyes, we reviewed refractive outcome of 43 eyes of 30 patients. most eyes were treated with 1-step operation, using a 6 mm optical zone. 43 eyes were treated for myopia, wh...

Advanced high strength steels (AHSS) have recently attracted great attention because of their superior mechanical properties. A modern group of these steels, known as twinning induced plasticity (TWIP) steels, shows a unique combination of strength and ductility even at high rates of strain. In order to examine the functionality of such steels in dynamic loading conditions, their mechanical beh...

Background: The affordable protocol to prevent the severe OHSS in two groups of patients PCO syndrome and non PCO high responder. Methods and Materials: PubMed and Medline were searched from January 2000 till end of May 2014. This Study investigates whether the mild protocol is associated to prevent severe OHSS in infertile female. Results: According to this survey, 9 studies were included and ...

in recent years there have been many attempts to develop and market inexpensive mixtures of high protein food for the children in developing areas of the world. biological studies have shown that these foods are rich sources of protein and are every effective in combating protein malnutrition. however, practical marketing and distribution has not been very successful due to the local people's h...

Recent tendencies in concrete technology have been towards to high- performance concrete with a low water-cement ratio. However, high performance concretes have some problems. One of the problems is early-age cracking due to autogenous shrinkage. This study presents the results of an experimental investigation carried out to evaluate the autogenous shrinkage of high-strength concrete. Accordi...