Results 101 to 110 of about 67,646 (195)

Influência de fontes de nitrogênio no fluxo de gases e na produtividade do milho e do trigo em sistema de plantio direto [PDF]

open access: yes, 2015
TCC (graduação)- Universidade Federal de Santa Catarina. Campus Curitibanos. Agronomia.O Nitrogênio é o nutriente exigido em maior quantidade, com maior custo e o que mais influencia a produtividade das culturas do milho e trigo, porém está sujeito a ...
Besen, Marcos Renan
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Nitrogen Oxide Emissions from Stationary Sources

open access: yesJournal of the Fuel Society of Japan, 1972
When fossil fuels are burned with air, some of the oxygen and nitrogen present combine to form nitrogen oxides. Their concentrations depends upon variables such as flame temperature, oxygen concentration and nitrogen content in fuels.Because of the absence of practically available techniques for removing nitrogen oxides from flue gases, the efforts are
openaire   +2 more sources

Nitrogen Isotopes in the Global Ocean [PDF]

open access: yes, 2013
Nitrogen is an essential nutrient for life. Its low abundance throughout much of the sunlit surface ocean limits the growth of primary producers that form the base of ocean ecosystems.
Somes, Christopher J.   +1 more
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Application of new measurement techniques and strategies to measure ammonia emissions from agricultural activities [PDF]

open access: yes, 2002
Agriculture is the main contributor to the ammonia emissions in the Netherlands. In order to comply with the ammonia emission reduction assigned to the Netherlands, new techniques have been implemented to reduce the ammonia emissions from animal houses ...
Mosquera, J.   +2 more
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How a National Carbon Policy Could Affect Grain Variety Selection: The Case of Rice in Arkansas [PDF]

open access: yes
This study conducts a life cycle assessment (LCA) of carbon emissions and estimates the carbon sequestered in 14 commonly sown rice varieties across the Arkansas Delta. Given the uncertainty regarding future carbon legislation, and increased consumer and
Popp, Michael P.   +2 more
core   +1 more source

Mechanisms of realization of THz-waves of nitrogen oxide occurrence physiological effects

open access: yesRussian Open Medical Journal, 2013
In this review, there is generalized material of many experimental researches in interaction of THz-waves molecular emission and absorption spectrum (MEAS) of nitrogen oxide occurrence with bioobjects.
Vyacheslav F. Kirichuk   +2 more
doaj  

Strategies to mitigate greenhouse gas and nitrogen emissions in Swiss agriculture: the application of an integrated sector model [PDF]

open access: yes
Environmental impacts of agricultural production, such as greenhouse gas (GHG) and nitrogen emissions, are of major concern for scientists and policy makers throughout the world.
Michael Hartmann   +3 more
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A Scientific Review of the Impact of UK Ruminant Livestock on Greenhouse Gas Emissions [PDF]

open access: yes
Climate change is a subject of global environmental concern. The UK has seen a progressive strengthening of political resolve to address the problems associated with emissions of greenhouse gases (GHGs), principally carbon dioxide (CO2), methane (CH4 ...
Lobley, Matt, Hopkins, Alan
core   +1 more source

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