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HSE-up is defined as the number of Cα atoms in the upper half (containing the pseudo-Cβ atom) and analogously HSE-down is defined as the number of Cα atoms in the opposite sphere. If only Cα atoms are available (as is the case for many simplified representations of protein structure), a related measure, called HSEα, can be used.
The HSE was set up in 1991 to provide information about life-style and behaviour choices with the aim of improving the targeting of national health policies. From 1991 to 1994, the survey was conducted by the Office of Population Censuses and Surveys which is now part of the Office for National Statistics (ONS).
An occupational exposure limit is an upper limit on the acceptable concentration of a hazardous substance in workplace air for a particular material or class of materials. It is typically set by competent national authorities and enforced by legislation to protect occupational safety and health.
In toxicology, the margin of exposure (or MOE) of a substance is the ratio of its no-observed-adverse-effect level to its theoretical, predicted, or estimated dose or concentration of human intake. [1]
sampling procedures (how samples are to be obtained and prepared, as well as the sample size) safety precautions; required calibrations and metrology systems; natural environment concerns and considerations; testing environment concerns and considerations; detailed procedures for conducting the test; calculation and analysis of data
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Many people accredit the idea of government responsibility for the protection of its workers in the workplace to Franklin D. Roosevelt in the Great Depression era. The formation of the National Conference of Governmental Industrial Hygienists (later to be renamed the American Conference of Governmental Industrial Hygienists) in 1938 was a direct response to this idea.
The total recordable incident rate (TRIR) is a measure of occupational safety and health, useful for comparing working conditions in workplaces and industries.It is calculated by combining the actual number of safety incidents and total work hours of all employees with a standard employee group (100 employees working 40 hours a week for 50 weeks a year).