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Lectures on Numerical Methods in Bifurcation Problems
Methods for Finding Zeros in Polynomials
Lectures on Stochastic Flows and Applications
Educational Psychology by Edward L. Thorndike
The Last Days of Tolstoy by V. G. Chertkov
Globalization and Responsibility
Lectures on Siegel Modular Forms and Representation by Quadratic Forms
Lectures on Topics In One-Parameter Bifurcation Problems
History of the Incas by Pedro Sarmiento de Gamboa
Linear Algebra: Theorems and Applications
Lectures on Stochastic Differential Equations and Malliavin Calculus
A Short Biographical Dictionary of English Literature
Lectures on Sieve Methods and Prime Number Theory
Dollars and Sense by William Crosbie Hunter
The Theory of the Theatre by Clayton Hamilton
The Mathematics of Investment
Occupiers of Wall Street: Losers or Game Changers
The Solution of the Pyramid Problem
Lectures on Moduli of Curves
Walden by Henry David Thoreau
Methods for Finding Zeros in Polynomials
Lectures on Stochastic Flows and Applications
Educational Psychology by Edward L. Thorndike
The Last Days of Tolstoy by V. G. Chertkov
Globalization and Responsibility
Lectures on Siegel Modular Forms and Representation by Quadratic Forms
Lectures on Topics In One-Parameter Bifurcation Problems
History of the Incas by Pedro Sarmiento de Gamboa
Linear Algebra: Theorems and Applications
Lectures on Stochastic Differential Equations and Malliavin Calculus
A Short Biographical Dictionary of English Literature
Lectures on Sieve Methods and Prime Number Theory
Dollars and Sense by William Crosbie Hunter
The Theory of the Theatre by Clayton Hamilton
The Mathematics of Investment
Occupiers of Wall Street: Losers or Game Changers
The Solution of the Pyramid Problem
Lectures on Moduli of Curves
Walden by Henry David Thoreau
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工作场所有害因素接触限值
Posted on 2010-04-28
|
职业接触限值(Occupational Exposure Limit，OEL)是职业性有害因素的接触限制量值，指劳动者在职业活动过程中长期反复接触对机体不引起急性或慢性有害健康影响的容许接触水平。化学因素的职业接触限值可分为时间加权平均容许浓度、最高容许浓度和短时间接触容许浓度三类。3.1.1 时间加权平均容许浓(Permissibleconcentration-Time Weighted Average，PC-TWA)指以时间为权数规定的8小时工作日的平均容许接触水平。3.1.2 最高容许浓度(Maximum Allowable Concentration，MAC)指工作地点、在一个工作日内、任何时间均不应超过的有毒化学物质的浓度。3.1.3 短时间接触容许浓度(Pemissible concentration-Short Term Exposure Limit，PC-STEL)，指一个工作日内，任何一次接触不得超过的15分钟时间加权平均的容许接触水平。3.2 工作场所(workplace)指劳动者进行职业活动的全部地点。3.3 工作地点(Work Site)指劳动者从事职业活动或进行生产管理过程而经常或定时停留的地点。
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