Results 31 to 40 of about 68,942 (307)

Aproveitamento pelo trigo do nitrogênio residual da crotalária (Crotalaria juncea) e da uréia aplicado ao solo em cultivo precedente Recovery by wheat of residual nitrogen from crotalária (Crotalaria juncea) and urea of previous crop soil fertilization

Ciência Rural, 2009
O cultivo de adubos verdes no sistema produtivo tem por objetivo o fornecimento de nitrogênio ao solo. Porém, muitas vezes os benefícios não são a curto prazo.
Anderson Lange, Isabela Rodrigues Bologna, Carlos Eduardo Faroni, Paulo Cesar Ocheuze Trivelin   +3 more
doaj   +1 more source

Reduced flavin : NMR investigation of N(5)-H exchange mechanism, estimation of ionisation constants and assessment of properties as biological catalyst

, 2005
Background: The flavin in its FMN and FAD forms is a versatile cofactor that is involved in catalysis of most disparate types of biological reactions.
Müller, Franz, Peter Macheroux, Christoph Sanner, Rüterjans, Heinrich (Prof. Dr.), Heinz Rüterjans, Sandro Ghisla, Macheroux, Peter, Sanner, Christoph, Ghisla, Sandro, Ruterjans, Heinz, Franz Müller   +10 more
core   +1 more source

Elastic and inelastic scattering of 15N ions by 6Li nuclei at energy 81 MeV

Ядерна фізика та енергетика, 2019
Angular distributions of the elastic and inelastic scattering of 15N ions by 6Li nuclei were measured at the energy Elab(15N) = 81 MeV. The data were analyzed within the coupled-reaction-channels method (CRC).
A. T. Rudchik, A. A. Rudchik, O. O. Chepurnov, K. Rusek, K. W. Kemper, E. Piasecki, A. Stolarz, A. Trczinska, Val. M. Pirnak, O.A. Ponkratenko, I. Strojek, E. I. Koshchy, R. Siudak, S. B. Sakuta, A. P. Ilyin, Yu. M. Stepanenko, V. V. Uleshchenko, Yu. O. Shyrma   +17 more
doaj   +1 more source

Nitrogen isotopic composition as a gauge of tumor cell anabolism-to-catabolism ratio

Scientific Reports, 2023
Studies have suggested that cancerous tissue has a lower 15N/14N ratio than benign tissue. However, human data have been inconclusive, possibly due to constraints on experimental design.
Marietta Straub, Alexandra Auderset, Laurence de Leval, Nathalie Piazzon, Damien Maison, Marie-Catherine Vozenin, Jonathan Ollivier, Benoît Petit, Daniel M. Sigman, Alfredo Martínez-García   +9 more
doaj   +1 more source

Sources of nitrous oxide emissions from hydroponic tomato cultivation: Evidence from stable isotope analyses

Frontiers in Microbiology, 2023
IntroductionHydroponic vegetable cultivation is characterized by high intensity and frequent nitrogen fertilizer application, which is related to greenhouse gas emissions, especially in the form of nitrous oxide (N2O).
Stefan Karlowsky, Caroline Buchen-Tschiskale, Luca Odasso, Dietmar Schwarz, Dietmar Schwarz, Reinhard Well   +5 more
doaj   +1 more source

12С(15N,14N)13C reaction mechanisms at energy 81 MeV [PDF]

Ядерна фізика та енергетика, 2020
The new experimental data of the 12С(15N,14N)13С reaction cross-sections at the energy Еlab(15N) = 81 MeV were measured for the ground and excited states of 14N and 13C nuclei.
А. Т. Rudchik, А. А. Rudchik, О. E. Kutsyk, К. Rusek, K. W. Kemper, E. Piasecki, A. Stolarz, A. Trczińska, Val. М. Pirnak, О. А. Ponkratenko, I. Strojek, E. І. Koshchiy, R. Siudak, S. B. Sakuta, V. A. Plujko, А. P. Ilyin, Yu. M. Stepanenko, V. V. Uleshchenko, Yu. O. Shyrma, V. V. Kheilo   +19 more
doaj   +1 more source

Effects of tuberculosis and HIV infection on whole-body protein metabolism during feeding, measured by the [15N]glycine method

, 2003
Background: Tuberculosis (TB) and HIV infection are wasting diseases that frequently occur together and have severe consequences on nutritional status.Objective: The objective was to determine the effects of TB and HIV, separately and together, on ...
Jackson, Alan A., Cynthia BE Chee, Alan A Jackson, Persaud, Chandarika, Nicholas I Paton, Chandarika Persaud, Ng, Yau-Ming, Paton, Nicholas I., Chee, Cynthia B.E., Yau-Ming Ng   +9 more
core   +1 more source

Elastic and inelastic scattering of 15N ions by 12C nuclei at energy 81 MeV

Ядерна фізика та енергетика, 2018
ew angular distributions of the 15N + 12C elastic and inelastic scattering were measured at the energy Elab (15N) = 81 MeV. The data were analyzed within the coupled-reaction-channels method (CRC). The elastic and inelastic scattering as well as the more
А. Т. Rudchik, А. А. Rudchik, О. E. Kutsyk, К. Rusek, K. W. Kemper, E. Piasecki, A. Stolarz, A. Trczinska, Val. М. Pirnak, О. А. Ponkratenko, I. Strojek, E. І. Koshchiy, R. Siudak, S. B. Sakuta, V. A. Plujko, А. P. Ilyin, Yu. M. Stepanenko, V. V. Uleshchenko, Yu. O. Shyrma   +18 more
doaj   +1 more source

Applicability of a “Multi-Stage Pulse Labeling” 15N Approach to Phenotype N Dynamics in Maize Plant Components during the Growing Season

Frontiers in Plant Science, 2017
HighlightsThis work utilizes “multi-stage pulse labeling” 15N applications, primarily during reproductive growth stages, as a phenotyping strategy to identify maize hybrids with superior N use efficiency (NUE) under low N conditions.Research using ...
Amanda de Oliveira Silva, James J. Camberato, Tristan Coram, Timothy Filley, Tony J. Vyn   +4 more
doaj   +1 more source

15N partitioning and production of 15N-labelled litter in beech trees following [ 15N]urea spray

, 1998
The leaves of 10-year-old beech trees grown in a plantation were sprayed once in late summer in 1993, 1994 and 1995 with [15N]urea, to determine the 15N utilization by beech (Fagus sylvatica L.) and to obtain homogeneous 15N-labelled litter.
Micheline Colin-Belgrand, Bernd Zeller, Étienne Dambrine, Francis Martin   +3 more
core   +1 more source