Results 41 to 50 of about 2,176,720 (143)

Functional indicators of response mechanisms to nitrogen deposition, ozone, and their interaction in two Mediterranean tree species [PDF]

open access: yes, 2017
The effects of nitrogen (N) deposition, tropospheric ozone (O3) and their interaction were investigated in two Mediterranean tree species, Fraxinus ornus L. (deciduous) and Quercus ilex L.
Basile, Adriana   +6 more
core   +2 more sources

Comparison of Nitrogen Treatment by Four Onsite Wastewater Systems in Nutrient-Sensitive Watersheds of the North Carolina Coastal Plain

open access: yesNitrogen, 2021
Wastewater may be a source of nitrogen (N) to groundwater and surface waters if not effectively treated. In North Carolina, onsite wastewater systems (OWSs) are used by 50% of the population for wastewater treatment, but most OWSs are not routinely ...
Charles P. Humphrey   +2 more
doaj   +1 more source

Effect of nitrogen fertilizer placement on nitrogen uptake and yield of sweet corn (Zea mays L. saccharata) : a thesis presented in partial fulfilment of the requirements for the degree of Master of Agricultural Science in Plant Science at Massey University, New Zealand [PDF]

open access: yes, 1986
Five placements of nitrogen fertilizer applied to sweet corn (Zea mays L. saccharata) at the four fully expanded leaf stage, that is control (no nitrogen), a band of nitrogen placed on the soil surface near the row, on the soil surface between the rows ...
Wongpichet, Kitti
core  

Ionized Nitrogen Mono-hydride Bands are Identified in the Pre-solar and Carbonado Diamond Spectra

open access: yes, 2011
None of the well established Nitrogen related IR absorption bands, common in synthetic and terrestrial diamonds, have been identified in the pre-solar diamond spectra.
Adams   +33 more
core   +1 more source

Tea Bags—Standard Materials for Testing Impacts of Nitrogen Addition on Litter Decomposition in Aquatic Ecosystems?

open access: yesNitrogen, 2021
How the anthropogenic addition of nutrients, especially nitrogen (N), impacts litter decomposition has attracted extensive attention, but how environmental factors other than nutrients affect the impacts of N addition on litter decomposition is less ...
Taiki Mori
doaj   +1 more source

Measures to achieve a stable farming system in sustainable agriculture – a short review

open access: yesAnnales Universitatis Paedagogicae Cracoviensis Studia Naturae, 2019
Zrównoważony system rolny jest najlepszym sposobem na zaspokojenie potrzeb dzisiejszych i przyszłych pokoleń. W systemie tym wielkość plonu wzrasta wraz z zastosowaniem upraw międzyrzędowych, poprzez wyższy współczynnik wzrostu roślin, redukcję nasion ...
Mohamad Hesam Shahrajabian   +2 more
doaj   +1 more source

Microstructure/Mechanical Characterization of Plasma Nitrided Fine-Grain Austenitic Stainless Steels in Low Temperature

open access: yesNitrogen, 2021
Fine-grained austenitic stainless steels (FGSS) were plasma nitrided below 700 K to describe their microstructure evolution during the nitrogen supersaturation process and to investigate the post-stressing effect on the microstructure and mechanical ...
Abdelrahman Farghali   +2 more
doaj   +1 more source

Increased Arctic NO3 Availability as a Hydrogeomorphic Consequence of Permafrost Degradation and Landscape Drying

open access: yesNitrogen, 2022
Climate-driven permafrost thaw alters the strongly coupled carbon and nitrogen cycles within the Arctic tundra, influencing the availability of limiting nutrients including nitrate (NO3−).
Carli A. Arendt   +10 more
doaj   +1 more source

Titan's past and future: 3D modeling of a pure nitrogen atmosphere and geological implications

open access: yes, 2014
Several clues indicate that Titan's atmosphere has been depleted in methane during some period of its history, possibly as recently as 0.5-1 billion years ago. It could also happen in the future.
Charnay, Benjamin   +4 more
core   +3 more sources

Tracing the atomic nitrogen abundance in star-forming regions with ammonia deuteration [PDF]

open access: yes, 2018
Partitioning of elemental nitrogen in star-forming regions is not well constrained. Most nitrogen is expected to be partitioned among atomic nitrogen, molecular nitrogen (N2), and icy N-bearing molecules, such as ammonia (NH3) and N2.
Furuya Kenji   +2 more
core   +3 more sources

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