purpose : to assess the safety, efficacy and predictability of photorefractive keratectomy (prk) [tissue-saving (ts) versus plano-scan (ps) ablation algorithms] of technolas 217z excimer laser for correction of myopic astigmatism methods : in this retrospective study one hundred and seventy eyes of 85 patients (107 eyes (62.9%) with ps and 63 eyes (37.1%) with ts algorithm) were included. ts al...

The tensile strength (TS) of rocks is an important parameter in the design of a variety of engineering structures such as the surface and underground mines, dam foundations, types of tunnels and excavations, and oil wells. In addition, the physical properties of a rock are intrinsic characteristics, which influence its mechanical behavior at a fundamental level. In this paper, a new approach co...

After years of fi ts and starts, the often stalled but always prodigious machinery of the dryeye pipeline appears to be moving forward. Thanks to improvements in designing clinical trials, monitoring patients’ signs and symptoms and evaluating the performance of therapeutic agents, a number of drugs are making their way through the clinical trial process. These agents include new mucomimetics, ...

Background: Auto-immunization was proposed as the mechanism of contralateral testicular damage following unilateral vas deferens injuries. The objective of this experimental in vitro study was to elucidate the effect of tacrolimus (TS) as a powerful immunosuppressant on contralateral epididymal sperm fertilizing capacity following unilateral vas deferens obstruction (UVO) in mice. Materials and...

the experiment was designed to study the changes in production performance and egg quality of old laying hens after injection of different doses of growth hormone (gh) and testosterone (ts). a total of 160 old laying hens (hyline w-36) at 73 wks of age were randomly assigned to four treatments with four replicates and 10 birds in each replicate in a completely randomized design. treatment group...

background & aim: medicinal plants is very potential to be used as a supplementary feed as well as feed additive in broilers.this experiment was conducted to investigate the effects of milk thistle (mt) and thyme seeds (ts) on the performance in broilers. experimental: in this study, 160 one-day-old (ross 308) male broiler chicks were divided randomly into four major groups with 4 replicate...