the effects of climate change, especially due to the increase of greenhouse gasses, have caused lots of problems that have affected different sections of society. one of the most important effects is the increase of natural disasters such as flood, drought, tropical cyclones, raising sea level, dust storm, etc. drought and flood are the most prevalent of these disasters in iran. because of the ...

cardiovascular disease remains the leading cause of morbidity and mortality in the united states and europe. in recent years, the understanding that regenerative processes exist at the level of the myocardium, has placed stem cell research at center stage in cardiology. a stem cell is a cell that has the ability to divide (self replicate) for indefinite periods often throughout the life of the ...

background: noise is one of the harmful factors of industrial environments that may cause defect such as hearing defects, high blood pressure, irritation, sleep disturbances, increased respiratory rate and oxygen consumption. the residents and personnel working in industries around mehrabad airport continuously exposed to noise pollution caused by the traffic of passenger, war and training airp...

We first show that a bounded linear operator $ T $ on a real Banach space $ E $ is quasicompact (Riesz, respectively) if and only if $T': E_{mathbb{C}}longrightarrow E_{mathbb{C}}$ is quasicompact  (Riesz, respectively), where the complex Banach space $E_{mathbb{C}}$ is a suitable complexification of $E$ and $T'$ is the complex linear operator on $E_{mathbb{C}}$ associated with $T$. Next, we pr...

parameters as interception, infiltration, water storage on surface holes and soil profile, evapotranspiration are factors of loss water in a watershed and avoid from changing of precipitation to runoff. in this study, by use of hec-hms model and comparison of results of different methods of precipitation loss evaluation (initial and constant, green & ampt, scs curve number, deficit & constant a...

Considering the increasing trend for ectopic pregnancies in the world and different reports on its complications and the fate of the following pregnancies, this study was performed to determine the relationship between these factors in referrals of the hospitals of Shaheed Beheshti University of Medical Sciences from 1991 to 1996. The cohort strategy of this research study was carried out on 2...