Oxides Of Nitrogen (NOx)

Economic valuation of ecosystem services of selected interventions in agriculture in India

Agriculture is multi-functional, producing economic goods including food, feed, fibre, and fuel, as well as providing several intangible or non-tradable services to society free of cost. Non-tradable services, unlike economic goods, remain unpriced; as a result, farmers are not compensated monetarily for the benefits of the several non-tradable services they …

Association between pollen risk indexes, air pollutants, and allergic diseases in Korea

This study, different from the past researches, has been conducted in all age groups to understand the association between air pollutants, pollen risk indexes, and outpatients with allergic rhinitis (AR), asthma, and atopic dermatitis (AD). Original Source

Air pollution may raise heart disease risk

Long-term exposure to air pollution is likely to increase the risk of heart disease, says a new study. The findings showed that air pollution accelerates the progression of atherosclerosis -- the condition called hardening of the arteries, which can cause heart attacks. People living in areas with more outdoor pollution, …

Estimating causal effects of local air pollution on daily deaths: Effect of low levels

While many time series studies have established associations of daily pollution variations with daily deaths, there are fewer at low concentrations, or focused on locally generated pollution, which is becoming more important as regulations reduce regional transport. Causal modeling approaches are also lacking. The objective of the study was to …

Significant atmospheric aerosol pollution caused by world food cultivation

Particulate matter is a major concern for public health, causing cancer and cardiopulmonary mortality. Therefore, governments in most industrialized countries monitor and set limits for particulate matter. To assist policy makers, it is important to connect the chemical composition and severity of particulate pollution to its sources. Here we show …

Soil denitrifier community size changes with land use change to perennial bioenergy cropping systems

Dedicated biomass crops are required for future bioenergy production. However, the effects of large-scale land use change (LUC) from traditional annual crops, such as corn-soybean rotations to the perennial grasses (PGs) switchgrass and miscanthus on soil microbial community functioning is largely unknown. Specifically, ecologically significant denitrifying communities, which regulate N2O …

National Green Tribunal questions Delhi government's rationale

The National Green Tribunal (NGT) has questioned the rationale behind the odd-even scheme for vehicles on Delhi roads. This, after receiving a report that indicated no significant improvement in the capital's air-quality as a result of the initiative. In a suggestion, the tribunal asked the Delhi government, "Wouldn't it be …

Delhi no more the most polluted city in the world, says WHO report

Delhi is not the most polluted city in the world any more, according to the World Health Organisation's (WHO) urban air quality database released on Thursday. In fact, it now ranks 11th among 3,000 cities in 103 countries in terms of PM 2.5 (fine, particulate pollution) and 25th in terms …

Twin threats to the air you breathe

Dispelling certain myths about factors contributing to the extremely high air pollution levels in Delhi, an IIT Kanpur professor said on Monday that biomass burning and vehicles were the most important sources of PM 2.5 emissions in winter. Professor Mukesh Sharma, the author of IIT Kanpur's source apportionment study on …

Biomass burning, vehicles to blame

Dispelling certain myths about factors contributing to the extremely high air pollution levels in Delhi, an IIT Kanpur professor said on Monday that biomass burning and vehicles were the most important sources of PM 2.5 emissions in winter. Professor Mukesh Sharma, the author of IIT Kanpur's source apportionment study on …

Supreme Court indicates modifying order on high-capacity diesel vehicles

The Supreme Court on Monday indicated of considering to modify its order banning registration of new diesel luxury cars and SUVs with an engine capacity of over 2,000 cc in Delhi and national capital region. A bench of Chief Justice T.S. Thakur, Justice R. Banumathi and A.K. Sikri said: “We …

Vehicles remain a major source of pollution: CSE

'Auto industry underplaying the toxic and cancer effects of diesel emissions’ Calling the campaign claiming that vehicles are an insignificant source of pollution as “misleading and motivated”, the Centre for Science and Environment (CSE) today lashed out the auto industry. It said that vehicles require stringent action as they emit …

Rapid cycling of reactive nitrogen in the marine boundary layer

Nitrogen oxides are essential for the formation of secondary atmospheric aerosols and of atmospheric oxidants such as ozone and the hydroxyl radical, which controls the self-cleansing capacity of the atmosphere. Nitric acid, a major oxidation product of nitrogen oxides, has traditionally been considered to be a permanent sink of nitrogen …

Diesel cars breach green standards in Europe tests

In the aftermath of the Volkswagen scandal, new tests on diesel vehicles across models by government agencies in the UK, France and Germany have revealed that emissions of oxides of nitrogen (NOx) in these automobiles were far higher than prescribed standards. The tests were conducted on Euro V and Euro …

Can’t control Delhi pollution without NCR: study

Delhi’s pollution levels may not come under control even if all the measures recommended by a report commissioned by the State government are implemented across the National Capital Region. This comes at a time when the Aam Aadmi Party (AAP) government has rolled out round two of the odd-even road-rationing …

Grazing intensity and driving factors affect soil nitrous oxide fluxes during the growing seasons in the Hulunber meadow steppe of China

In this study, the effects of cattle grazing intensity on soil nitrous oxide (N2O) fluxes were examined in the Hulunber meadow steppe of north-eastern China. Six stocking-rate treatments (0, 0.23, 0.34, 0.46, 0.69, and 0.92 AU ha−1) with three replicates were established, and observations were conducted from 2010 to 2014. …

Impact of emission mitigation on ozone - induced wheat and rice damage in India

In this study, we evaluate the potential impact of ground level ozone (O3) on rice and wheat yield in top 10 states in India during 2005. This study is based on simulated hourly O3 concentration from the Weather Research and Forecasting model coupled with Chemistry (WRF-Chem), district-wise seasonal crop production …

Effect of injection timing on heat release rate and emissions in a biodiesel fuelled & nano powder coated CI engine

The injection timing variation has a robust effect on emission formation in direct combustion diesel engine with thermal barrier coating. The piston head and cylinder were coated with Zirconium at 40 micron thickness. Low Heat Rejection (LHR) engine has high heat with standing capacity inside the combustion chamber, so the …

Impact of increasing heatwaves on U.S. ozone episodes in the 2050s: Results from a multi-model analysis using extreme value theory

We develop a statistical model using extreme value theory to estimate the 2000-2050 changes in ozone episodes across the United States. We model the relationships between daily maximum temperature (Tmax) and maximum daily 8-hour average (MDA8) ozone in May-September over 2003-2012 using a Point Process (PP) model. At ~20% of …

Exposure to traffic-related air pollution in relation to progression in physical disability among older adults

Physical disability is common though not inevitable in older age and has direct bearing on a person’s ability to perform activities essential for self-care and independent living. Air pollution appears to increase the risk of several chronic diseases that contribute to the progression of disability. The researchers evaluate long-term exposure …

Atmospheric N and P deposition in the Ganges Basin

The atmosphere–land–water connectivity of nutrients is not altogether accounted for in the Ganges Basin despite recent studies highlighting its importance. Together with surface inputs, rivers receive N and P through atmospheric deposition (AD), directly on water surfaces, and through lateral transport. Original Source

  1. 1
  2. ...
  3. 4
  4. 5
  5. 6
  6. 7
  7. 8
  8. ...
  9. 26

IEP child categories loading...