نتایج جستجو برای: tlvthreshold limit value
تعداد نتایج: 903124 فیلتر نتایج به سال:
The objective of the current study is to determine the fatigue limit of a clean and high-performance material named as HSLA-100 steel and to compare the obtained fatigue limit with that of theoretically predicted fatigue limit by statistics of extreme value (SEV) method. Also, the size of inclusions located at the site of fatigue crack nucleation on the fracture surface of the fatigue test spec...
The concentrations in the air of total and of respirable (less than 7 microns equivalent diameter) dust were measured in 142 workrooms of 17 Northern Ireland flax spinning mills using a hexhlet air sampler. Neither the distribution of total nor of respirable dust concentrations (mg./100 m.3 air) measured in each of four large workrooms conformed to the normal (or Gaussian) distribution, but it ...
A statistical approach for making impairment determinations in the Section 303(d)listing process is developed. The method is based on the 100(1 a ) percent lower confidence limit on an upper percentile of the concentration distribution. Advantages of the method include: (1) it provides a test of the null hypothesis that a percentage of the true concentration distribution fails to meet a regulat...
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