污染指数

基于BP网络的空气污染指数预报研究

Forecast of air pollution index based on BP neural network

Cr的单项污染指数超标的有6个样品；

There are 6 sampling space that single pollution index of Cr exceed the standard ;

VISUALBASIC在城市空气质量污染指数计算中的应用

Application of Visual Basic in the calculation of urban air quality pollution

关于Eulere函-数和n的指数互素因子大气污染指数

On Euler e-function and exponential coprime divisors of n Index number for atmospheric pollution

VB可视化集成环境下空气污染指数计算与分析系统

Calculation and Analysis System of Air Pollution Indicators under VB Visual Environment

论API指数和综合污染指数

On API Index and Comprehensive Pollution Index

Cd单因子污染指数为4.05，污染等级为重污染。

The single factor pollution ( indictor ) of Cd was 4.05 showing a serious pollution grade .

API指数法和综合污染指数法均是反映和评价城市环境空气质量状况的方法，它们既有联系，又有区别。

API index and comprehensive pollution index are methods to report and assess city 's air quality .

应用SPSS统计软件和污染指数评价地下水污染&以濮阳市地下水污染评价为例

Groundwater pollution evaluation with statistical software SPSS and pollution exponents

水体中Cr（Ⅵ）浓度是衡量水质污染指数的重要指标，本研究采用新型水处理材料海绵铁处理Cr（Ⅵ）。

Sponge iron , a new water treatment material , was used for treating chromium (ⅵ) - containing wastewater .

同步进行了16个站四季的水质分析，提出化学综合污染指数（P）。

Meanwhile , water quality of 16 stations for four seasons from 1986 & 1987 is analysed , and the chemical combined pollution index ( p ) is advanced .

对营养水平指数E值、有机污染指数A值取值及评价标准进行了探讨；

To set the values about E-value ( nutritional level index ) and A-value ( organic pollution index ) and their evaluation criteria were also discussed .

目前在北京最受欢迎的一款iPad应用是中国空气污染指数。

One of the most popular iPad apps in Beijing at present is China Air Pollution Index .

探讨了以VB可视化集成环境为平台，在Windows操作系统下开发空气污染指数计算与分析系统的基本模型和方法。

The basic models and methods to develop calculation and analysis system of Air pollution indicators under VB Visual and Windows environment , was discussed .

牡蛎体Cu污染指数的范围和平均值分别为0.17-0.88和0.30，属微污染到轻污染水平。

The polluted indexes of Cu in oysters ranged from 0.17 to 0.88 with an average of 0.30 , indicating the minute polluted by Cu in the Bay .

综合污染指数P在监测井1~、2~、4~、6~和7~均有明显的减小，反映其污染程度减轻。

The integrated pollution indexes decreased obviously in wells 1 # , 2 # , 4 # , 6 # and 7 # , which indicated thad the extent of pollution were lower than that in 2000 .

污染指数FI的测试分析

Analysis of fouling index test

主要驱动因子为：水质综合污染指数、底栖动物多样性指数、藻类多样性指数、GDP、粮食总产量、水产品产量、绿化覆盖率、旅游收入。

Major factors are water quality pollution index , benthic diversity index , algae diversity , GDP , grain output , aquatic production , greening rate and tourism revenue .

空气污染指数（API）是美国环保署于70年代研究开发的一种用于表示每日空气质量状况，并易于为大众理解的报告方法。

Air pollution index ( API ) was developed by USEPA in 1970s which was used for the daily air quality report and easy for the public to understand .

结果表明：第四纪红土发育的土壤综合污染指数处于警戒线附近，仅Cd出现15%的超标，未受到其他重金属的污染；

The results showed that the soils derived from Quaternary red clay contain warning limit of heavy metals , and only 15 % of the soils are polluted by Cd .

根据污染指数（PI）将5个断面的水质污染分为两个水平，即重污染和中污染；

The levels of water pollution of the 5 sampling sections could be divided into heavily contaminated level and moderately contaminated level according to the pollution index .

潜在污染指数IPC，人群344.07，鼠类71.83。[结论]鼠类在我省部份高原峡谷型血吸虫病流行区传播中的作用居于次要地位；

[ Conclusion ] The rodents played a minor role in the transmission of schistosomiasis in the plateau area of Yunnan province .

综合污染指数评价表明矿化垃圾以及矿化垃圾与污泥混合土壤的淋溶液对地下水造成潜在污染的最关键因子为Mn，其次是Fe。

The assessment by pollution comprehensive index method showed the key factors to pollute underground water in aged waste and its mix with sludge during showering are Mn and Fe .

空气污染指数（API）年平均值近三年间均有下降趋势，并针对空气污染提出了相应整改措施。

The annual average of the air pollution index ( API ) showed a decrease tendency in recent 3 years , and put forward the air pollution preventing and curing countermeasures .

收集了2006年《重点城市空气质量日报》中中国86个重点城市空气质量主要分析指标&空气污染指数（API）、首要污染物、空气质量级别，并对数据进行统计分析。

Analyze the main index , which include API , primary pollutant , air quality level , in86 cities of china from Urban Ambient Air Quality Daily Report of2006 .

根据对2002年和2004年长江三峡库区巴东段的七个监测断面的水质监测结果，采用综合污染指数法（P值法）对各监测断面、城区江段以及其总体水环境质量进行了综合评价。

Water quality in various monitoring sections and urban sections were overall evaluated by using integrated pollution index based on analysis of recent two years ' water quality monitoring data in 7 cross sections alongside Badong area of Three Georges reservoir .

采用Pb污染指数法和地积累指数评价法，长春城区表层土壤Pb总体上处于轻度向偏中度污染水平。

With lead pollution index and accumulate index method , the Pb content in urban green earth soil of Changchun city generally between the light and moderate pollution levels . 2 .

并测得PVA系列对该膜的污染指数FI及膜的化学稳定性，为复合膜提供了理想的支撑膜。

The membrane pollution index FI by PVA solution and the chemical stability are tested . Ideal support membrane is provided for composite membrane .

对湘潭锰矿废弃地土壤中Ni、Cd、Cu、Mn、Pb和Zn的含量进行了测定分析，并采用污染指数评价法对矿区废弃地土壤重金属的污染程度进行了评价。

Contents of Ni 、 Cd 、 Cu 、 Mn 、 Pb and Zn in soil from slag wasteland of Xiangtan Manganese Mine were investigated and evaluations were made by using pollution index .

除Cd、Cr和Pb略低于背景值外，其他重金属均高于其背景值，其中以As污染指数和超标率最高。

Apart from Cd , Cr and Pb , all the other soil heavy metals exceeded their background levels in concentration , and As ranked first in contamination index and over limit rate .