purpose: to evaluate tear film status and refractive conditions during and one month after treatment of acne vulgaris with isotretinoin (accutane). methods: this prospective study was performed on 26 eyes of 13 known cases of acne vulgaris. all cases were referred by a dermatologist and were candidates for low dose isotretinoin (0.5 mg/kg). full anterior and posterior segment examination and ob...

System redundancy in aircraft is very important as it ensures faulty components would not jeopardize the safety of crew and passengers. High priority system such as flight control computers, instruments system and controller for control surface mechanism have double or triple redundancy to maintain the aircraft safety. While full scale aircraft has multiple redundancy system installed, small un...

Based on the interpretation of 2D seismic profiles integrated with surface geological investigations, a mechanism responsible for formation large scale normal fault zone has been proposed. The fault, here referred to as Rycerka Fault, predominantly dip-slip component detachment located at base Carpathian units. developed due an anticlinal stack within Dukla Unit overlain by Magura Units. Stacki...

  Tears of the subscapularis tendon have been significantly recognized as a source of shoulder pain and dysfunction in the past decade, thanks to arthroscopic evaluation of the shoulder and biomechanical and anatomical studies of the tendon. Current classification of subscapularis tendon tear is based on insertion site of the tendon. Recently, a classification for non-insertional types of subsc...

purpose: to evaluate and compare tear secretion and tear film instability following laser in situ keratomileusis (lasik) and laser assisted subepithelial keratectomy (lasek). methods: in a randomized clinical trial, 30 eyes of 15 patients underwent lasik and 30 eyes of 15 patients underwent lasek to correct myopia. tear secretion and tear film instability were tested preoperatively, 2 and 6 wee...

Objective: Among the various impression materials, for alginate tear strength is probably more important than the compressive strength. The tear strength is important when an impression involves a mechanical undercut and/or lacks bulk strength to resist tearing. This study evaluated tear strength of Iralgin and compared it with tear strength of Alginoplast. Methods: In this invitro experime...