Background: Exposure to hand-arm vibration is one of the most common physical harmful factors. The purpose of this study was Experimental study of  the level of manual performance disability caused by exposure to hand-arm vibration among automobile casting workers.  Methods: This study was performed on 53 casting workers as case group and 28 controls as control group. The measurement of the vi...

the author intend to by studying the historical causes of the appearance of the novation in the west and explanation of its legal nature from past to present of french law, proves on the one hand that the novation does not extracted from the french civil code and in the shiite jurisprudence with quite similar terms even before the enactment of iranian civil code, was considered by the shiite su...

Grenades are small hand bombs containing a certain amount of explosives or chemical compounds used against the enemy forces or their weaponry. Grenades are composed of three main parts, namely the grenade casing, the main charge and the fuse. Delay time in grenades is provided by pyrotechnic delay composition. The proper delay time in hand grenades is 3 to 5 seconds and delay time less than 1 s...

Introduction & Objective:Surgical infection that caused by every surgery is one of nosocomial infection. Hand disinfection or scrub is an effective method to prevent this infection. There are many antiseptic solutions that used for hand scrubbing. For accessing to the most quality of hand scrubbing, it is necessary this procedure be according to correct principle or standard. Therefore this sur...

Background & Aims: Health care-associated infections (HCAIs) are a major patient safety concern, and consequently prevention should be a top priority for institutions. Hand hygiene is the most effective way to reduce nosocomial infections. Materials & Methods: 296 medical students in different wards of university hospitals in Urmia participated in this descriptive study. They completed a hand ...