Results 21 to 30 of about 45,317 (258)

Nitrate reductase 15N discrimination in Arabidopsis thaliana, Zea mays, Aspergillus niger, Pichea angusta, and Escherichia coli

Frontiers in Plant Science, 2014
Stable 15N isotopes have been used to examine movement of nitrogen (N) through various pools of the global N cycle. A central reaction in the cycle involves nitrate (NO3–) reduction to nitrite (NO2–) catalyzed via nitrate reductase (NR).
Eli eCarlisle, Chris eYarnes, Michael D Toney, Arnold Jeffrey Bloom   +3 more
doaj   +1 more source

Reduced 15N Losses by Winter and Spring Night-Warming Are Related to Root Distribution of Winter Wheat

Frontiers in Plant Science, 2019
To develop efficient N management strategies for high wheat NUE and minimizing the environmental impact of N losses under asymmetric warming, 15N micro-plot experiments were conducted to investigate the effects of night-warming during winter (warming by ...
Chenxi Hu, Jinghong Yu, Shuzhen Sun, Yanyan Yan, Hua Guo, Zhongwei Tian, Dong Jiang, Weixing Cao, Tingbo Dai   +8 more
doaj   +1 more source

Tracking Animal-Dispersed Seedlings Using 15N Xylem Injection Method

Frontiers in Plant Science, 2021
Although various seed-marking methods have been developed for seed dispersal, it remains difficult to track the actual patterns of seed dispersal and seedling recruitment. Thus, new labeling methods that accurately track seedling establishment along with
Minghui Wang, Sijie Yi, Mengyao Ju, Xianfeng Yi   +3 more
doaj   +1 more source

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

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

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

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

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