Results 11 to 20 of about 1,236,345 (391)

Exploring Five Methods for Estimating Net Community Production on the Siberian Continental Shelf and Slope of the Arctic Ocean

open access: yesFrontiers in Marine Science, 2022
The loss of sea ice and changes to vertical stratification in the Arctic Ocean are altering the availability of light and nutrients, with significant consequences for net community production (NCP) and carbon export.
M. B. Alkire   +2 more
doaj   +1 more source

Effect of an agri-environmental measure on nitrate leaching from a beef farming system in Ireland [PDF]

open access: yes, 2015
peer-reviewedAgricultural nitrogen (N) management remains a key environmental challenge. Improving N management is a matter of urgency to reduce the serious ecological consequences of the reactive N.
Brophy, C.   +6 more
core   +1 more source

The Arabidopsis NLP7 gene regulates nitrate signaling via NRT1.1-dependent pathway in the presence of ammonium. [PDF]

open access: yes, 2018
Nitrate is not only an important nutrient but also a signaling molecule for plants. A few of key molecular components involved in primary nitrate responses have been identified mainly by forward and reverse genetics as well as systems biology, however ...
Crawford, Nigel M   +7 more
core   +1 more source

Efeito da aplicação de nitrato na redução biogênica de sulfeto sob diferentes concentrações iniciais de bactérias redutoras de nitrato e sulfato Effect of nitrate application on reduction of biogenic sulphide under different initial concentrations of nitrate and sulphate-reducing bacteria

open access: yesQuímica Nova, 2010
The effect of sodium nitrate application in the reduction of biogenic sulphide was evaluated through a 2k complete factorial design, using as variable response the production of sulfide at intervals of incubation of 7, 14 and 28 days.
Kally Alves de Sousa   +2 more
doaj   +1 more source

Ruminal fermentation of Anti-methanogenic Nitrate- and Nitro-Containing Forages In Vitro

open access: yesFrontiers in Veterinary Science, 2016
Nitrate, 3-nitro-1-propionic acid (NPA) and 3-nitro-1-propanol (NPOH) can accumulate in forages and be poisonous to animals if consumed in high enough amounts.
Robin C. Anderson   +7 more
doaj   +1 more source

Accessible Phreatic Groundwater Resources in the Central Shijiazhuang of North China Plain: Perspective From the Hydrogeochemical Constraints

open access: yesFrontiers in Environmental Science, 2021
Phreatic groundwater plays a significant role in the water supply for human communities, especially in water scarce regions. This research was conducted to investigate the hydrochemistry and contamination of phreatic groundwater and their constraints on ...
Yong Xiao   +9 more
doaj   +1 more source

Resolving the contributions of the membrane-bound and periplasmic nitrate reductase systems to nitric oxide and nitrous oxide production in Salmonella enterica serovar Typhimurium [PDF]

open access: yes, 2011
The production of cytotoxic nitric oxide (NO) and conversion into the neuropharmacological agent and potent greenhouse gas nitrous oxide (N2O) is linked with anoxic nitrate catabolism by Salmonella enterica serovar Typhimurium.
Anderson   +50 more
core   +1 more source

Fixação biológica de nitrogênio por plantas de trevo (Trifolium spp) em sistema de integração lavoura-pecuária no Sul do Brasil Nitrogen biological fixation by clover plants (Trifolium spp) on crop-pasture systems in southern Brazil

open access: yesRevista Brasileira de Zootecnia, 2007
Este trabalho foi realizado com o objetivo de avaliar o efeito da inclusão de plantas de trevo (Trifolium spp) sob pastejo em sistema de integração lavoura-pecuária sobre a quantidade de N fixada, a produtividade, os componentes de rendimento da cultura ...
Tangriani Simioni Assmann   +5 more
doaj   +1 more source

Paliperidonium nitrate [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2012
In the title mol-ecular salt (systematic name: 3-{2-[4-(6-fluoro-1,2-benzoxazol-3-yl)piperidin-1-yl]eth-yl}-9-hy-droxy-2-methyl-1,6,7,8,9,9a-hexa-hydro-pyrido[1,2-a]pyrimidin-4-one nitrate), C(23)H(29)FN(4)O(3) (+)·NO(3) (-), the piperidine ring displays a chair conformation and its N atom is protonated; the N-H bond is in an axial orientation.
Jingshui Ge, Yang-Hui Luo
openaire   +3 more sources

A biomass burning source of C1- C4alkyl nitrates [PDF]

open access: yes, 2002
We report the first observations of the emission of five C1-C4alkyl nitrates (methyl-, ethyl-, n-propyl-, i-propyl-, and 2-butyl nitrate) from savanna burning.
Atlas, E   +6 more
core   +1 more source

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