purpose : to determine and evaluate the visual acuity (va) and refracion of correcting compound severe myopic astigmatism with the artisan toric intraocular lenses (iols) methods : in this noncontrolled clinical trial, 15 patients with severe astigmatism and at least 2.0 diopters (d) of astigmatism were enrolled. all patients met the inclusion criteria. artisan toric iol implantation was recomm...

waterwheels are the oldest types of hydraulic machines. these turbines are of relatively simple design, large diameter, low rotational speed and high torques. but applying them as micro hydros of high speed and small diameter is yet to be explored. a micro hydro waterwheel of one meter diameter was designed and manufactured at the iranian  esearc†h organization for science and technology (irost...

this paper aims at finding the long term coupled effect of high temperature and constant high relative humidity on the corrosion rehabilitated patches of chloride contaminated steel reinforced concrete. this paper is an extension of previous research in which the authors experimentally corroborated re-corrosion in the repaired reinforced concrete (rc) patches in the form of macro-cells. in prev...

aim and backgruond: blood pressure  , one of the most important public health problem in the world is the main risk factors for heart disease .depression is the common comorbod psychiatric disorder among patient with medicin  conditions .this aim was to    compared   depression between   patients with hypertension and  normal  people . methods and materials: in the case-control ,143 consecative...

With careful design, mixed microstructures consisting of fine plates of upper bainitic ferrite separated by thin films of stable retained austenite have exhibited impressive combinations of strength and toughness in highsilicon bainitic steels. The silicon suppresses the precipitation of brittle cementite leading to an improvement in toughness. The essential principles governing the optimisatio...