![]() The third group: given 15mg/kg B.W of potassium dichromate (K2Cr2O7) per os, and the last group: given diet containing 2% curcuma powder and 15mg/kg B.W of K2Cr2O7 per os. The second group: given diet with 2% curcuma powder. The first group: used as a control group. Twenty-eight male rats were randomly divided into four equal groups. The present study was under taken to investigate the potential effect of curcuma on toxicity induced by hexavalent chromium in male Wistar rats. WorkplaceĪn establishment, job site, or project, at one geographical location containing one or more work areas.Chromium has long been identified as toxic environmental and industrial pollutants. Work areaĪ room or defined space in a workplace where hazardous conditions are or may be produced or used, and where employees are present. VaporĪ term used for a substance that, although present in the gaseous phase, usually exists as a liquid or solid at room temperature and pressure. UserĪ Miami University employee who is assigned to tasks that require respiratory protection and is authorized to wear respiratory protective equipment through training and meeting specific physical and medical requirements. Supplied-air respiratorsĪ type of respirator that delivers breathing air through a supply hose connected to the wearer’s facepiece or enclosure. Standby workerĪ worker who monitors other workers in IDLH work environments and is able to initiate rescue operations in case of an emergency. SmokeĪn air suspension (aerosol) of particles, originating from combustion or sublimation. Quantitative fit test (QNFT)Īn assessment of the adequacy of respirator fit by numerically measuring the amount of leakage into the respirator Self-contained breathing apparatus (SCBA)Ī type of respirator in which the wearer is independent of the surrounding atmosphere because he/she is breathing with a system that is portable and admits no outside air, thus providing respiratory protection against toxic gases and oxygen-deficient atmospheres. Means a pass/fail fit test to assess the adequacy of respirator fit that relies on the individual's response to the test agent (e.g., irritant smoke). Powered air-purifying respirator (PAPR)Ī type of respirator in which filtered air is delivered under positive pressure to the wearer’s breathing zone. Oxygen deficient atmosphereĪn atmosphere with less than 19.5% oxygen content. NIOSHĪn abbreviation for the National Institute for Occupational Safety and Health. Negative-Pressure RespiratorĪ type of respirator in which the air pressure inside is lower relative to the outside air pressure. Mist is formed when a finely divided liquid is suspended in air. Suspended liquid droplets generated by condensation from the gaseous to the liquid state or by breaking up a liquid into a dispersed state. The Miami University main campus in Oxford, Ohio and its regional campuses. Immediately Dangerous to Life and Health (IDLH)Īcute exposure that poses an immediate threat of loss of life, immediate or delayed irreversible adverse effects on health, or an exposure that would prevent escape from a hazardous environment. GasĪ state of matter in which the material has very low density and viscosity can expand and contract greatly in response to changes in temperature and pressure easily diffuses into other gases readily and uniformly distributes itself throughout any container. Small solid particles usually generated by condensation from the gaseous state of a metal or plastic after volatilization. See also Qualitative fit test (QLFT) and Quantitative fit test (QNFT.) FogĪ mixture consisting of liquid particles dispersed in a gaseous medium. The use of a protocol to qualitatively or quantitatively evaluate the fit of a respirator on an individual. Filtering face-piece (dust mask)Ī negative pressure particulate respirator with a filter as an integral part of the face-piece or with the entire face-piece composed of the filtering medium. End-of-Service-Life IndicatorĪ warning system for the respirator user, which indicates the approach of the end of adequate respiratory protection (e.g., color change in sorbent material). EmployeeĪ Miami University faculty member, staff member, student worker, or contract employee. Solid particles generated by handling, crushing, grinding, rapid impact, detonation, and decrepitation of organic or inorganic materials. Cartridge or canisterĪ container with a filter, sorbent, or catalyst, or combination of these items, which removes specific contaminants from the air passed through the container. Respirator devices that provide a respirable atmosphere to the wearer independent of the ambient atmosphere. Atmosphere supplying (air-supplying) respirator ANSIĪn abbreviation for the American National Standards Institute. A respirator with an air-purifying filter, cartridge, or canister that removes specific air contaminants by passing ambient air through the air-purifying element.
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