Air quality (for both primary and secondary pollutants) improved significantly during the Games, which were also associated with the changes in weather conditions (prolonged rainfall, decreased temperature, and more frequent air masses from clean regions). A comparison of the ozone data at three ...
During the past decades, developed countries have instituted control programmes to reduce emissions of primary air pollutants and precursor emissions for secondary pollutants such as ozone. 在过去十年来,各发达国家制定了管制方案来减少初级空气污染物的排放和减少诸如臭氧的这种次生污染物的前体排放。 UN-...
In this communication, we review recent activities and trends of primary and secondary air pollutants in the state of Kuwait, a country associated with petroleum, petrochemical, and other industrial pollution. Trends of pollutants and impact on human health have been studied and categorized based on...
2.A study on the prediction of secondary pollutants' concentration in cities are carried out in this paper, based on a former version of the City Air Pollution Prediction System (CAPPS).本文在CAPPS原有模式基础上研究了城市大气中臭氧等二次污染物的预报问题。 6)no secondary pollution无二次污染 延...
Amyloid accumulation is a defining feature of Alzheimer's Disease (AD) and is a risk factor for cognitive decline and dementia. Previous cerebrospinal fluid and autopsy studies in humans have showed that brain β゛myloid pathology may be promoted by exposure to air pollutants, possibly because of...
Since the beginning of the industrial revolution, processes of different scales have contributed greatly to the pollution and waste load on the environment. More specifically, airborne pollutants ass...
deterioration in the quality of air. Widespread use of coal and fossil fuels in industries and petroleum fuel in motor vehicles has aggravated the air pollution problem. Our atmosphere seems to have become a waste basket into which dust, noxious fumes, toxic gases and other pollutants are ...
2.2.7 Secondary air injection (SAI) Due to “rich fuel mixture” during the cold start phase, a large quantity of un-combusted HC and CO is produced in the exhaust. To reduce the level of these pollutants, ambient secondary air is injected into the exhaust manifold directly downstream of ...
2) Air-borne microbial pollution 空气微生物污染 例句>> 3) Air pollutants 空气污染物 1. Evaluation on effectiveness of photocatalyst in degradation of air pollutants; 光触媒降除空气污染物效果评价 2. Analysis and study of indoor and outdoor air pollutants beside the trunk road; ...
2) primary pollutant in air 大气中一次污染物3) secondary pollutant 二次污染物 1. The formation mechanism of secondary pollutants such as dioxin,heavy metal,acidic gas and ash are presented in this paper. 概述了二口恶英、重金属、酸性气体、灰渣等垃圾焚烧二次污染物的形成机理,并详细介绍了...