air pollution is one of the most important problems in urban areas that always threaten citizen's health. photochemical smog is one of the main factors of air pollution in large cities like tehran. usually smog is not only a part of nature, but is being analyzed as an independent matter, which highly affects on the nature. it has been used as relationship between atmospheric elements such as te...

background and aims: whole body vibration (wbv) transmitted to drivers is one of the main reasons for several different symptoms such as musculoskeletal disorders. one of the recommendations to decrease the effects of whole body vibration is using a device that acts as an isolator. in this study, we used an air cushion as a device to decrease wbv. we measured whole body vibration transmitted to...

This study analyzes the effects of cold air on catecholamine (CA) levels. The CA levels of patients with cardio-cerebrovascular diseases, healthy people, Wistar rats, and spontaneously hypertensive (SHR) rats were determined before, during, and after cold air activity. The levels of dopamine (DA), norepinephrine (NE), and adrenaline (AD in humans and experimental animals changed in all three pe...

The objective of this study was to test the potential for using a single-entry procedure to revegetate Russian knapweed– and green rabbitbrush–infested rangeland. I hypothesized that simultaneously applying an herbicide and seeding in the fall would produce the highest establishment and growth of desired species. For Russian knapweed, treatments included three seeding rates (zero, low, and high...

The seasonal variation in the quarterly incidence of some sexually transmitted diseases and other conditions in Scotland is compared with that of gonorrhoea and of conceptions leading to live births or abortions. The seasonal incidence for non-specific genital infections and for other conditions not requiring treatment in both men and women was similar to that of gonorrhoea, thus indicating an ...

extended abstractintroduction the recognition of behaviors of the atmospheric circulation patterns and effective climatic elements in occurrence of flood is very important, especially because abnormal climate changes such as global warming in recent years tend to change in atmospheric circulation patterns and outbreak climatic inelegances in many areas in the world. intensive and torrential pre...