检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:乔聚山[1] 乔燕颖 时松和[3] 谷桂珍[1] 程广超[1] 李奎荣[1]
机构地区:[1]河南省职业病防治研究所 [2]郑州热电厂职工医院 [3]河南医科大学统计教研室
出 处:《中国工业医学杂志》1998年第1期8-10,共3页Chinese Journal of Industrial Medicine
基 金:河南省医学科学院科研基金资助
摘 要:为了研究火力发电厂粉尘与尘肺发病的剂量-反应关系,根据某火力发电厂接尘工人接尘时间、肺总通气量、粉尘浓度和游离二氧化硅含量,计算职工肺内石英负荷量,然后采用累积剂量患病率寿命表法研究尘肺患病率与粉尘的剂量-反应关系,推算该类粉尘的容许浓度。结果表明接尘剂量与尘肺患病率呈显著正相关关系,提示每人平均工作30a,使尘肺患病率低于5‰,接触煤粉者和接触灰粉者作业场所平均粉尘浓度分别应控制在10.00mg/m3和3.25mg/m3以下。In order to study the doseresponse relationship between dust and incidence of pneumoconiosis in a thermal power plant,the quartz burden in their lungs of the workers exposed to dust was calculated based on their length of exposure and total lung capacities,concentrations of dust and free silica in workplace air,and then the relationship between dose of dust and prevalence of pneumoconiosis and dust allowable concentration in workplace air was calculated by lifetable method with dosecumulative morbidity.Results indicated that dust exposure dose correlated significantly to prevalence of pneumoconiosis with a coefficient of correlation.It indicated that coal dust and fly ash concentrations in workplace air should be controlled below 100 mg/m3 and 325 mg/m3,respectively,to keep the prevalence of pneumoconiosis lower than five per thousand for those working there for thirty years in average..
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.229