Surface sediments contamination to heavy metals was evaluated in eight creeks of Mahshahr coastal waters (north-west of the Persian Gulf) from October. 2005 to November 2006. Sediments were collected seasonally by Peterson grab and the concentrations of heavy metals were measured using voltammetry and polarography methods. The range and the mean concentrations obtained in mg/kg were 15.03-35.16...

Measurement of chlorophyll-a can be considered important to investigate the primary production of an ecosystem. This study aimed to investigate chlorophyll-a concentration, primary production and the factors affecting them in Shadegan Wetland located in Khouzestan Province - Iran. Sampling for measuring (NO3, PO4, BOD5, DO, pH, EC, salinity, temperature) was performed seasonally at five samplin...

the aim of this study was to determine the level and analysis of the components of the organizational health at the islamic azad university of region six. the research method is descriptive and population statistical consisted of region six of islamic azad university`s units. the subjects include 320 b.a holder individuals of staff who have bachelor`s degree and higher.  from among 175 people w...

background: studies show that about 90% of accidents occur because of unsafe behavior and human errors. even if workers do not have the right knowledge, attitude and behavior toward safety measures in a safe workplace, all efforts for an accident-free workplace will be in vain. this study aims to determine the level of knowledge, attitude and behavior of workers toward occupational health and s...

this paper is to identify the determinants of risk management and measure its impact on strategic management in tondgooyan petrochemical company during 2013-2014 in mahshahr city. the research method used is a descriptive-survey one. the population contains 200 employees. to test the hypotheses, the researcher uses a questionnaire consisted of 45 questions. the results are tested by kolmogorov-...

background: according to the world health organization, the acceptable range for cesarean delivery is only 10-15% of the total delivery. increased  rate of cesarean can increase maternal mortality rate. statistics from provinces in iran shows that the rate of unnecessary caesareans is growing in the country. methods: this qualitative research evaluated the comments of 20 mothers who had caesare...