background: radon and thoron are invisible, odorless, heavy and radioactive gases which are ubiquitously present in dwellings and in the environment. in the present work, seasonal variation of indoor radon, thoron and their progeny concentrations has been studied in the dwellings of industrially polluted cities in district faridabad, haryana and district mathura in uttar pradesh. materials and ...

purpose the objective of this study was to compare the iranian taekwondo-in statistically in terms of total injury rates to international counterparts as gleaned from the extant literature. methods the iranian sample consisted of 204 male taekwondo-in participating in the national championship. the international sample included the participants in national and international tournaments. validat...

background: the objective of this study was to measure the total suspended particulate (tsp), pm 10 and pm 2.5 air particulates in the selected intercity bus stations located in the central square of hamadan, to review the distribution concentration of the air particulates content and to evaluate its possible health risk to the people who spent little time of their daily time in those places. m...

the harmful effects of the long-term ocular exposure to cumulative levels of infrared radiation (ir) in glassblowing and foundries have been recognized since the late 19th century. these effects include cataracts, keratitis, and chronic dry eye problems. therefore, infrared radiation measurements are critical and need to be assessed regularly in the industries and workplaces where there are hig...

background: exposure to blood-borne pathogens from needle-stick and sharp injuries continues to pose a significant risk to health care workers. these events are of concern because of the risk to transmit blood-borne diseases such as hepatitis b virus, hepatitis c virus, and the human immunodeficiency virus. objective: to benchmark different risk factors associated with needle-stick incidents am...

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 ...

In ecology, recent technological advances and long-term data studies now provide longitudinal interaction data (e.g. between individuals or species). Most often, time is the parameter along which interactions evolve but any other one-dimensional gradient (temperature, altitude, depth, humidity, etc.) can be considered. These data can be modelled through a sequence of different snapshots of an e...