why are called occupational hazard and selective breeding
Answers
Answer:
1 .due to anthrax bacterium
Explanation:
While sorting wool ,some sheep are infected by a bacterium called anthrax which causes itching and swelling
2 the selecting of parents of sheeps
Answer:
OBJECTIVE: To assess the occupational health risk of coal dust in coal wharf, identify the high risk post.
METHODS: The research took workers who were exposed to coal dust in two 50- 150 thousands tons coal wharfs around bohai as subjects. The field investigation to get the infoamtion of production technology, distribution of coal dust, free silica content of coal dust, dust prevention measures and facilities, personal protection equipment, occupational health management, etc were used. The coal dust concentration of workplaces and the main positions were detected by filter membrane weighing method. The health risk of the coal dust to the main posts were assessed with the InternationalCouncil on Mining and Metals risk assessment method and occupational hazard risk index method.
RESULTS: In the coal wharf, the concentration of coal dust at transferring tower, car dumper, ship loader, and coal storage yard were higher than other workplace, range of concentration: total dust 8. 8-85. 1 mg/m~3, respirable dust 2. 3- 32. 3 mg/m~3。The assessing result of ICMM method was that, 78. 6% of the posts were at "intolerable"level of occupational risk. The risk values of the driver of car dumper( 1500, 5000), the hatch commander( 1500), and the cleaners of coal storage yard( 900) were higher than transfer tower patrol workers( 600), drivers of material piling and taking machine( 450). The assessing result of occupational hazard risk index method was that, the risk degree of total dustand respirable dusttothe driver of car dumper was "severe"and "moderate"( the risk index was 40. 03 and 16. 95, respectively), and the risk degree of the total dust to the cleaners of coal unloading department and coal storage yard were "light"( the risk index was 6. 02 and 8. 70, respectively), with other posts' "no harm ".
CONCLUSION: The occupational hazard of coal wharf is focused on the processes of loading and unloading( "severe"and"moderate"), transferring( "light") and reentrainment( "light").
Explanation:
An occupational hazard is a hazard experienced in the workplace. Occupational hazards can encompass many types of hazards, including chemical hazards, biological hazards (biohazards), psychosocial hazards, and physical hazards. In the United States, the National Institute for Occupational Safety and Health (NIOSH) conduct workplace investigations and research addressing workplace health and safety hazards resulting in guidelines.[1] The Occupational Safety and Health Administration (OSHA) establishes enforceable standards to prevent workplace injuries and illnesses.[2] In the EU a similar role is taken by EU-OSHA.
Occupational hazard as a term signifies both long-term and short-term risks associated with the workplace environment and is a field of study within occupational safety and health and public health[3]. Short term risks may include physical injury, while long-term risks may be increased risk of developing cancer or heart disease.