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 …

Fluctuations in foliar nutrient contents in different tree species induced by thermal power plant emissions in Angul district, Orissa

The impact of thermal power plant emissions on foliar elemental concentration was assessed in this study. In addition to direct effects of deposition of air pollutants, soil mediated processes can also bring deterioration in plant growth due to altered soil characteristics.

Study of morbidity pattern of a population exposed to industrial air pollution at Trivandrum and Pune, India

  Industrial air pollution is of major concern to upcoming Indian cities like Trivandrum and Pune in terms of industrialization and urbanization. Even the urban population is exposed to ambient air pollutants; on the other hand the sub-rurals contribute to the cigarette smoke and kitchen cooking fuels. A quantitative analysis on …

Meat eaters guide to health and the climate

US analysis highlights the high greenhouse gas emissions of popular animal products in comparison to alternatives like lentils, rice and tomatoes. Food derived from methane-generating ruminant animals such as sheep and cows has the highest level of greenhouse gas emissions, according to research published in the US.

TERI sounds ozone alarm for 2030 Delhi: vehicle fleet to be blamed

New Delhi: The Energy and Resources Institute has rung alarm bells for the rising ozone levels in the country. Delhi has reason to be especially worried as not only does it suffer from extremely high ozone levels but also tops the list of cities with the highest levels of oxides …

Lung cancer incidence and long-term exposure to air pollution from traffic

Previous studies have shown associations between air pollution and risk for lung cancer. The authors investigated whether traffic and the concentration of nitrogen oxides (NOx) at the residence are associated with risk for lung cancer.

Four-stroke complements CNG

VEHICLES and fuels must be seen as a system and not in isolation. Even a clean fuel like CNG may emit high air pollutants if the vehicle engine technology is inefficient to burn the fuel. This is the message from the first detailed testing of CNG three-wheelers in Delhi by …

Mecon passes NOx monitoring test

- Plans to build a single system to check multi-gas harmful emissions Ranchi, May 6: Mecon has developed a system that monitors noxious nitrogen oxides in air, a breakthrough it achieved after two years of painstaking research. In the presence of senior company officials, including CMD A.K. Ghosh and a …

The impact of the congestion charging scheme on air quality in London

The London Congestion Charging Scheme (CCS) – which charged for travel into central London and reduced traffic volume – showed little evidence that it improved air quality, according to a study published by the Health Effects Institute (HEI).

Warming can boost denitrification disproportionately due to altered oxygen dynamics

Global warming and the alteration of the global nitrogen cycle are major anthropogenic threats to the environment. Denitrification, the biological conversion of nitrate to gaseous nitrogen, removes a substantial fraction of the nitrogen from aquatic ecosystems, and can therefore help to reduce eutrophication effects. However, potential responses of denitrification to …

States must follow Delhi on diesel tax

Market sales show that 36 per cent of new car sales in India are in the diesel category. This is expected to touch the 50 per cent mark very soon according to projections made by experts in the automobile industry, especially in the bigger car segment. Market statistics show that …

Flawed, but accepted

A recent study by the Central Pollution Control Board has exonerated vehicles of being the worst polluters in Delhi and Mumbai. Instead, it has pinned down liquefied petroleum gas (LPG) as the biggest source of fine pollutants. Experts have contested the study, saying the findings are unsubstantiated and scientifically untenable. …

CO2 tweaks nitrogen cycle

IN WHAT could have ramifications on the ocean food web, scientists have found that rising acidity of seawaters slows down marine nitrogen cycle. Ocean acidification is the result of CO2 dissolving in seawater and lowering its pH. Scientists know that a drop in ocean pH affects carbon cycle, reducing carbonate …

Global declines in oceanic nitrification rates as a consequence of ocean acidification

Ocean acidification produced by dissolution of anthropogenic carbon dioxide (CO2) emissions in seawater has profound consequences for marine ecology and biogeochemistry. The oceans have absorbed one-third of CO2 emissions over the past two centuries, altering ocean chemistry, reducing seawater pH, and affecting marine animals and phytoplankton in multiple ways. Microbially …

Nitrous oxide emission from denitrification in stream and river networks

Nitrous oxide (N2O) is a potent greenhouse gas that contributes to climate change and stratospheric ozone destruction. Anthropogenic nitrogen (N) loading to river networks is a potentially important source of N2O via microbial denitrification that converts N to N2O and dinitrogen (N2). The fraction of denitrified N that escapes as …

Gaseous air pollutants : a review on current and future trends of emissions and impact on agriculture

Air pollution recieves one of the prime concern in India, primarily due to rapid economic growth, industrialization and urbanization with associated increase in energy demands. Lacks of implementation of environmental regulations are contributing to the bad air quality of most of the Indian cities. Air pollutants produced in any air …

An exploration on greenhouse gas and ammonia production by insect species suitable for animal or human consumption

Greenhouse gas (GHG) production, as a cause of climate change, is considered as one of the biggest problems society is currently facing. The livestock sector is one of the large contributors of anthropogenic GHG emissions. Also, large amounts of ammonia (NH3), leading to soil nitrification and acidification, are produced by …

An exploration on greenhouse gas and ammonia production by insect species suitable for animal or human consumption

Greenhouse gas (GHG) production, as a cause of climate change, is considered as one of the biggest problems society is currently facing. The livestock sector is one of the large contributors of anthropogenic GHG emissions. Also, large amounts of ammonia (NH3), leading to soil nitrification and acidification, are produced by …

Is particulate matter really matters in schools? A case study of air pollution in Delhi

Three key polutants, namely RSPM, SO2 and NO2 have been measured in schools in the National Capital Region (Delhi). Monitoring was conducted at all the 5 locations. Alarming levels of pollutants were reached on Diwali day, a festival of lights and for days preceding Diwali at all the locations.

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