Results 21 to 30 of about 320,910 (314)

Co-firing of coal and woody biomass under conditions of reburning technology with natural gas

open access: yesInternational Journal of Renewable Energy Development, 2023
It is a continuous imperative to establish the most efficient process of conversion of primary energy from fuel through combustion, which also has the least possible harmful effect on the environment. In this time of expressed demands for decarbonisation,
Nihad Hodžić, Kenan Kadic
doaj   +1 more source

Impacts of HHO gas utilisation on the operating parameters in internal combustion engines

open access: yesResearch in Agricultural Engineering, 2022
Social pressure is forcing manufacturers to make huge investments in development in order to reduce the harmful emissions of passenger cars. However, there are also cheaper solutions that promise to reduce pollutants with minimal investment.
Petr Jindra, Martin Kotek
doaj   +1 more source

Implications of large scale shifts in tropospheric NOx levels in the remote tropical Pacific [PDF]

open access: yes, 1997
A major observation recorded during NASA's western Pacific Exploratory Mission (PEM-West B) was the large shift in tropical NO levels as a function of geographical location.
Anderson, B   +15 more
core   +2 more sources

Chemical NOx budget in the upper troposphere over the tropical South Pacific [PDF]

open access: yes, 2000
The chemical NOx budget in the upper troposphere over the tropical South Pacific is analyzed using aircraft measurements made at 6-12 km altitude in September 1996 during the Global Tropospheric Experiment (GTE) Pacific Exploratory Mission (PEM) Tropics ...
Bradshaw, J D   +6 more
core   +2 more sources

Surface and lightning sources of nitrogen oxides over the United States: Magnitudes, chemical evolution, and outflow [PDF]

open access: yes, 2007
We use observations from two aircraft during the ICARTT campaign over the eastern United States and North Atlantic during summer 2004, interpreted with a global 3-D model of tropospheric chemistry (GEOS-Chem) to test current understanding of regional ...
Avery, M A   +22 more
core   +2 more sources

State and use of monitoring and evaluation systems in national and provincial departments

open access: yesAfrican Evaluation Journal, 2015
Since 2009, South Africa has seen a major shift in emphasis concerning monitoring and evaluation (M&E) systems. This shift was partially stimulated by the South African government being faced with a number of pressures, key amongst which were persistent ...
Futhi Umlaw, Noqobo (Nox) Chitepo
doaj   +1 more source

Preliminary inventory of atmospheric emissions (SO2, NOx and TSP) from different industrial sectors in Costa Rica

open access: yesUniciencia, 2021
The use of fuels, urbanization growth, and economic development have influenced the generation of atmospheric pollutants such as NOx (nitrogen oxides), SO2 (sulfur dioxide), and TSPs (Total Suspended Particles).
Daniel Alfaro-Alfaro   +5 more
doaj   +1 more source

Effect of steam addition on the flow field and NOx emissions for Jet-A in an aircraft combustor [PDF]

open access: yes, 2016
The steam injection technology for aircraft engines is gaining rising importance because of the strong limitations imposed by the legislation for NOx reduction in airports.
Hu, Chunbo   +3 more
core   +1 more source

Determination of Particulate Matter and Toxic Gaseous in Ambient Air Adjacent to Industrial Area [PDF]

open access: yesIranica Journal of Energy and Environment, 2017
Air quality in the residential areas adjacent to the industrial regions is of great concern due to the association with particulate matter and toxic gaseous which has adverse effects on human health.
R. M. S. R. Mohamed   +5 more
doaj   +1 more source

Chemical nonlinearities in relating intercontinental ozone pollution to anthropogenic emissions [PDF]

open access: yes, 2009
Model studies typically estimate intercontinental influence on surface ozone by perturbing emissions from a source continent and diagnosing the ozone response in the receptor continent.
Arlene M. Fiore   +38 more
core   +2 more sources

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