information technology is one of the largest and most important human achievements in the present era whose influence on most human activities is undeniable. the traditional education system is being affected by the information technology and it is now turning into an electronic education system. one of the newest issues in the field of electronic education is the effects of web page achievemen...

introduction: nowadays ionizing radiation has a considerable contribution in medical diagnostic and treatment. using ionizing radiation is increasing rapidly, so biological effects of ionizing radiation should be considered more. x-rays in the range of diagnostic radiology have hazardous effects and risks that are defined as random effects. these effects obey the lnt hypothesis that occur at lo...

conclusions because a considerable number of idus in iran are receiving reduction services, tailoring services for prevention of hepatitis infection are necessary. results hcv infection was found to be primarily associated with female gender [odds ratio (or) 5.0, 95% confidence interval (ci) 2.0-10.0)], unmarried status (or 2.9, 95% ci 1.9-4.4), drug use for more than 10 years (or 2.7, 95% ci 1...

background: repeated applications of animal manure as fertilizer are normal agricultural practices in malaysia that may release veterinary antibiotics to environment from treated animals. methods: environmental risk assessment (era) on 5 commonly used antibiotics and one hormone in malaysian broiler farm was calculated using the ratio of measured environmental concentration (mec) and predicted ...

background: population attributable fraction (paf) is one of the most practical measures for estimating the burden of risk factors with some challenges in its calculation. cardiovascular disease (cvd) is the first cause of death worldwide and the estimation of accurate pafs for cvd risk factors is of great importance in conducting preventive strategies. our aim was to estimate the pafs of cvd r...

introduction: in addition to the annual mortality rate, unintentional home injury may result in temporary or permanent disability and requires medical attention and continuous care in millions of children. this study aimed to explore features and risk factors of these injuries. methods: in this cross-sectional study, demographic variables and epidemiologic pattern of home injuries among childre...

drilling operations are exposed to a variety of hazards, some of which may be location and activity dependent and each could pose different risk from different paths.  drilling operation may be vulnerable to hurricanes in one region and be exposed to geohazards in another. however, there are other hazards, (e.g. corrosion, age degradation, poor maintenance), which equally affects every rig. ide...

The smooth running of small and medium-sized manufacturing enterprises (SMEs) presents a significant challenge irrespective of the technological and human resources they may have at their disposal. SMEs continuously encounter daily internal and external undesirable events and unwanted setbacks to their operations that detract from their business performance. These are referred to as ‘disturbanc...