Background: Formaldehyde (FA) is a member of aldehyde family with a simplest organic molecule, used in various industries. Since there is simultaneous exposure of formaldehyde and noise for workers in most of the workplaces and that noise can reinforce the harmful effects of some chemical pollutants. This study aimed to investigate the effects of simultaneous formaldehyde and noise exposure on ...

conclusions exposure to formaldehyde vapor can destroy testicular structure and decrease percentages of sperm count and progressive motility. the present study indicated that a reduction in the percentage of progressive motile sperm may be potentiated by noise (700-5700 hz) in the simultaneous exposure to formaldehyde and noise group. thus, it can be anticipated that simultaneous exposure to fo...

during the last recent decades, restructuring in the electricity industry has been considered as an economical policy. consequently, it was able to increase private investment, competition, efficiency, and productivity. the purpose of restructuring electricity industry is to change electricity industry organization, in order to omit monopoly and increase competition. recognition of restructurin...

dysmenorrhea is among the most common gynecological complaints. there are several mechanisms which initiate dysmenorrhea. therefore, different compounds can be employed to control its symptoms. nsaids such as ibuprofen are highly used in modern medicine to relieve the pain in short-term therapy. this method is not acceptable for long-term therapy due to side effects. our previous data showed th...

This article investigates the relationship between the exchange rate and non-oil trade balance in Iran between 1981 and 2014. A structural vector auto-regression model is built. The results indicated that the increasing effect of the real effective exchange rate worsens the non-oil trade balance in the short term. In contrast, the increasing effect of the real effective exchange rate improves t...

New concepts in the manipulation of time in video editing are presented, enabling some unique visual effects. These effects include (i) slowing down (or postponing) some dynamic events while speeding up (or advancing) others. (ii) Creating dynamic panoramic images of dynamic scenes. (iii) Generating new views of a scene without a 3D model. (iv) Creating panoramic stereo images. Time manipulatio...