The identification of occupational carcinogens in the workplace is a major concern of epidemiologists. A novel case-control approach has been developed which includes as a key component the assessment of a subject's occupational exposure history by a two stage process. Firstly, the subject is interviewed to obtain a detailed lifetime job history. Then a team of chemists and hygienists, hired an...

The article focuses on issues relating to occupational exposures of researchers and lab workers, and exposures of bystanders such as health care workers and family members during HSR using nanomaterials. Such third-party exposures give rise to unique challenges relating to oversight as well as exposures to worker groups not previously studied. Given the current state of knowledge regarding heal...

Air traffic is increasing, raising concern about local pollution and its adverse health effects on the people living in the vicinity of large airports. However, the highest risk is probably occupational exposure due to proximity. Jet exhaust is one of the main concerns at an airport and may have a health impact, particularly on the respiratory tract. Current studies are neither numerous enough ...

Cohort studies of adverse reproductive effects of occupational exposures that compare the outcome of exposed pregnancies with non-exposed pregnancies among the same group of mothers (internal controls) and among a different group of mothers (external controls) have been reviewed. Confounding of the hypothesised associations by parental characteristics, the outcome of previous pregnancies, and o...

backgrounds and aims: semi automated processes of iranian tire manufacturing factories lead to significant occupational exposures to benzene and toluene compounds. this study was conducted to evaluate the magnitude and risk of workers exposures. materials and methods: personal monitoring of 100 workers (10 groups) was performed using niosh method no.1501 in two tire manufacturing factories in t...

Introduction The purpose of this study was to evaluate personal shields in radiation departments of hospitals affiliated to Mashhad University of Medical Sciences. Materials and Methods First, the information related to 109 personal shields was recorded and evaluated by imaging equipment. Afterwards, the equivalent lead thickness (ELT) of 62 personal shields was assessed, using dosimeter and st...

In the field of occupational hygiene, the setting of permissible levels of hazards in the work environment is one of the mechanisms used in occupational health to prevent health impairment in the worker. The term “permissible level” has been defined. Basically, it is a quantitative hygiene standard for a level considered to be safe, expressed as a concentration for a defined average time. In re...

Background: Noise as a most common harmful physical agent in workplaces has some effects on the exposed persons such as hearing threshold reduction, increasing blood pressure, and interference with the speech. The adverse side-effect of noise is one of the scientific areas that have seldom been considered by researchers. The aim of this study was to investigate the effects of occupational noise...

The aim of the present study was to assess whether asthma onset prior to entering the workforce influences whether a person holds a subsequent job with asthma-related inhalation exposures. The data of 19,784 adults from the European Community Respiratory Health Survey were analysed. For each respondent, a current or previously held job was linked to a job exposure matrix assigning high, low or ...

background: post-exposure prophylaxis plays an important role in prevention of bloodborne diseases after occupational exposures. objective: to evaluate the knowledge, attitude and practice of dentists towards post-exposure prophylaxis. methods: in a cross-sectional study, 140 dentists in shiraz were selected through a systematic randomized sampling. they filled out a self-made questionnaire inc...