Results 221 to 230 of about 1,336,456 (266)
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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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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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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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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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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
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AMBIO: A Journal of the Human Environment, 2002
Anthropogenic changes to the global N cycle are important in part because added N alters the composition, productivity, and other properties of many natural ecosystems substantially. Why does added N have such a large impact? Why is N in short supply in so many natural ecosystems?
Peter M, Vitousek +3 more
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Anthropogenic changes to the global N cycle are important in part because added N alters the composition, productivity, and other properties of many natural ecosystems substantially. Why does added N have such a large impact? Why is N in short supply in so many natural ecosystems?
Peter M, Vitousek +3 more
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Nitrogen-Nitrogen Elastic Scattering
Physical Review, 1958An optical-model analysis of the measurements of nitrogen-nitrogen elastic scattering is made, and a quasi-classical discussion of the corresponding phase shifts is given. (auth)
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Dalton Transactions, 2019
This special web collection of Dalton Transactions focuses on nitrogen ligands, as a tribute to the 150th anniversary of the development of the periodic table.
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This special web collection of Dalton Transactions focuses on nitrogen ligands, as a tribute to the 150th anniversary of the development of the periodic table.
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