Results 261 to 270 of about 3,460,426 (309)
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Medicine, 2003
Abstract Evaporation of liquid nitrogen from the eye or skin may cause cold burns. It may displace oxygen, causing hypoxic asphyxia. Of the nitrogen oxides NO 2 is most toxic. Following exposure, effects in the peripheral airways and alveoli can be expected; clinical symptoms are usually absent during the first hours after exposure.
Meulenbelt, Jrivm
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Abstract Evaporation of liquid nitrogen from the eye or skin may cause cold burns. It may displace oxygen, causing hypoxic asphyxia. Of the nitrogen oxides NO 2 is most toxic. Following exposure, effects in the peripheral airways and alveoli can be expected; clinical symptoms are usually absent during the first hours after exposure.
Meulenbelt, Jrivm
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Nitrogen assimilation and nitrogen control in cyanobacteria
Biochemical Society Transactions, 2005Nitrogen sources commonly used by cyanobacteria include ammonium, nitrate, nitrite, urea and atmospheric N2, and some cyanobacteria can also assimilate arginine or glutamine. ABC (ATP-binding cassette)-type permeases are involved in the uptake of nitrate/nitrite, urea and most amino acids, whereas secondary transporters take up ammonium and, in some ...
E, Flores, A, Herrero
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Nitrogen Fixation and Nitrogen Fertilization of Soybeans
Isotopes in Environmental and Health Studies, 1996Abstract In pot experiments with (15)N labelled soil and mineral (15)N, the influence of Bradyrhizobium (Rhizobium japonicum) inoculation and N fertilization on the symbiotic N(2) fixation and yield of soybeans [Glycine max (L.) Merill., cv. 'Fiskeby V'] was investigated.
W, Merbach, H J, Jacob
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Elastic Scattering of Nitrogen by Nitrogen
Physical Review, 1956The differential cross section for the elastic scattering of nitrogen from nitrogen was measured for incident nitrogen laboratory energies of 15.0, 17.7, 19.2, and 21.7 Mev and laboratory angles from 15\ifmmode^\circ\else\textdegree\fi{} to 55\ifmmode^\circ\else\textdegree\fi{}.
H. L. Reynolds, A. Zucker
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Nitrogen Responses and Nitrogen Management in Potato
Potato Research, 2009Innumerable experiments have been carried out to establish the yield response of potato to the rate of nitrogen (N) supply. Given the continuing change in production level of potato and because of the need to maximise the nutrient use efficiency and to reduce losses of harmful nitrogenous compounds to the environment, such research is still necessary ...
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Angewandte Chemie International Edition, 1998
Dry air is the source of molecular nitrogen for reactions with TiL4 , Li, and TMSCl (L = Cl, OiPr; TMS = trimethylsilyl). The nitrogen-titanium complexes thus prepared can be used to synthesize indoles, pyrroles, and lactams from carbonyl compounds. Applying this method to 1 provides access to 2, the key compound in the synthesis of (±)-lycopodine.
Miwako, Mori +5 more
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Dry air is the source of molecular nitrogen for reactions with TiL4 , Li, and TMSCl (L = Cl, OiPr; TMS = trimethylsilyl). The nitrogen-titanium complexes thus prepared can be used to synthesize indoles, pyrroles, and lactams from carbonyl compounds. Applying this method to 1 provides access to 2, the key compound in the synthesis of (±)-lycopodine.
Miwako, Mori +5 more
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Science, 2016
Few projects in plant biotechnology are harder, or promise a greater payoff, than enabling crops to make their own nitrogen fertilizer.
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Few projects in plant biotechnology are harder, or promise a greater payoff, than enabling crops to make their own nitrogen fertilizer.
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2019
N is one of essential element of life on earth, but it contributes in its reactive form to the global environmental problems that are already larger than our earth is able to cope with, and it expected further aggravate (Galloway and Leach, 2016) driven by the increasing demand of food products fuelled by growth of human population, rising incomes and ...
Leip, Adrian, Uwizeye, Aimable
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N is one of essential element of life on earth, but it contributes in its reactive form to the global environmental problems that are already larger than our earth is able to cope with, and it expected further aggravate (Galloway and Leach, 2016) driven by the increasing demand of food products fuelled by growth of human population, rising incomes and ...
Leip, Adrian, Uwizeye, Aimable
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Nitrogen Fixation: Synthesis of Heterocycles Using Molecular Nitrogen as a Nitrogen Source.
ChemInform, 2004AbstractFor Abstract see ChemInform Abstract in Full Text.
Miwako Mori +5 more
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2001
When leafy vegetables such as spinach and lettuce are grown in greenhouses during winter and early spring, i.e. at low light intensity and short day length, they may accumulate a high amount of nitrate in the leaves (Corre and Breimer 1979). A high nitrate content in vegetables is undesirable, because it may be harmful for the consumer.
ter Steege, M.W. +2 more
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When leafy vegetables such as spinach and lettuce are grown in greenhouses during winter and early spring, i.e. at low light intensity and short day length, they may accumulate a high amount of nitrate in the leaves (Corre and Breimer 1979). A high nitrate content in vegetables is undesirable, because it may be harmful for the consumer.
ter Steege, M.W. +2 more
openaire +3 more sources

