Results 31 to 40 of about 149,407 (284)

Exogenous GA3 alleviates low nitrogen stress by enhancing leaf nitrogen assimilation and limiting the transport of photosynthates to roots in apple plants

Fruit Research
Gibberellins (GAs) are crucial for improving plant adaptation to abiotic stresses; however, their physiological functions in apple plants under low-nitrogen (N) stress remain unclear. In this work, a hydroponic approach was used to explore the effects of
Jingquan Liu, Mengxue Lyu, Chunling Liu, Wei Ni, Yafei Guan, Hongmei Xie, Yue Xing, Ziquan Feng, Zhanling Zhu, Shunfeng Ge, Yuanmao Jiang   +10 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

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

Observations of nitrogen isotope fractionation in deeply embedded protostars [PDF]

, 2014
(Abridged) The terrestrial planets, comets, and meteorites are significantly enriched in 15N compared to the Sun and Jupiter. While the solar and jovian nitrogen isotope ratio is believed to represent the composition of the protosolar nebula, a still ...
Bisschop, S. E., Bizzarro, M., Jorgensen, J. K., Wampfler, S. F.   +3 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

The identification of histidine ligands to cytochrome a in cytochrome c oxidase [PDF]

, 1985
A histidine auxotroph of Saccharomyces cerevisiae has been used to metabolically incorporate [1,3-15N2] histidine into yeast cytochrome c oxidase. Electron nuclear double resonance (ENDOR) spectroscopy of cytochrome a in the [15N]histidine-substituted ...
Chan, Sunney I., Martin, Craig T., Scholes, Charles P.   +2 more
core  

Nitrogen Fractionation in External Galaxies [PDF]

, 2019
In star forming regions in our own Galaxy, the 14N/15N ratio is found to vary from $\sim$ 100 in meteorites, comets and protoplanetary disks up to $\sim$ 1000 in pre-stellar and star forming cores, while in external galaxies the very few single-dish ...
Fontani, Francesco, Holdship, Jonathan, Jimenez-Serra, Izaskun, Viti, Serena   +3 more
core   +3 more sources