Results 31 to 40 of about 149,608 (284)

A divergent heritage for complex organics in Isheyevo lithic clasts [PDF]

, 2017
Primitive meteorites are samples of asteroidal bodies that contain a high proportion of chemically complex organic matter (COM) including prebiotic molecules such as amino acids, which are thought to have been delivered to Earth via impacts during the ...
Alexander, Alexander, Alexander, Alexander, Alexander N. Krot, Alt, Altwegg, Aléon, Becker, Belloche, Bergin, Biver, Bizzarro, Bockelée-Morvan, Bollard, Bonal, Bonal, Briani, Brownlee, Bunch, Busemann, Chakraborty, Ciesla, Clayton, Cleeves, Cleeves, Coakley, Cobb, Cody, Cody, Cooper, Daniel P. Wielandt, Davidson, De Gregorio, De Gregorio, De Marcellus, De Marcellus, Deloule, Dodson-Robinson, Doyle, Dworkin, Ehrenfreund, Elishevah M.M.E. van Kooten, Fitzsimons, Floss, Franke, Garenne, Garvie, Grady, Hartogh, Heays, Herbst, Hily-Blant, Hily-Blant, Ian A. Franchi, Injerd, Iqbal, Ishii, Ivanova, Jes K. Jørgensen, Jon P. Ramsey, Jørgensen, Kazuhide Nagashima, Kebukawa, Keller, Kerridge, King, Krot, Kuga, Lajaunie, Larsen, Laurent, Le Guillou, Lis, Lyons, Martin Bizzarro, Martin Schiller, Marty, Marty, Messenger, Millar, Mumma, Mūller, Nakamura-Messenger, Paton, Piani, Pizzarello, Pizzarello, Pizzarello, Remusat, Remusat, Remusat, Robert, Rodgers, Roueff, Schrader, Shinnaka, Starkey, Susanne F. Wampfler, Søren Frimann, Takeshi Kasama, Terzieva, Tomeoka, Van Kooten, Vollmer, Walsh, Wampfler, Wasson, Weisberg, Wirström, Yabuta, Yang, Zega, Zoltan I. Balogh, Zubavichus   +114 more
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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 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

STELLAR ORIGINS OF EXTREMELY C-13- AND N-15-ENRICHED PRESOLAR SIC GRAINS: NOVAE OR SUPERNOVAE? [PDF]

, 2016
Extreme excesses of 13C (12C/13C < 10) and 15N (14N/15N < 20) in rare presolar SiC grains have been considered diagnostic of an origin in classical novae, though an origin in core collapse supernovae (CCSNe) has also been proposed. We report C, N, and Si
Alexander, Conel M. O'D., Alexander, Conel M. O’D., Jose, Jordi, José, Jordi, Liu, Nan, Nguyen, Nguyen, Ann, Nittler, Larry R., Pignatari, Marco, Wang, Jianhua   +9 more
core   +3 more sources

MAS NMR detection of hydrogen bonds for protein secondary structure characterization [PDF]

, 2020
Hydrogen bonds are essential for protein structure and function, making experimental access to long-range interactions between amide protons and heteroatoms invaluable. Here we show that measuring distance restraints involving backbone hydrogen atoms and
Friedrich, Daniel, Nieuwkoop, Andrew J., Oschkinat, Hartmut, Perodeau, Jacqueline   +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

Stabilization and plant uptake of N from 15N-labelled pea residue 16.5 years after incorporation in soil [PDF]

, 2006
The decline of N from 15N-labelled mature pea residues was followed in unplanted soil over 16.5 yr. Eight years after residue incorporation, 24% of the residue 15N input was still present in the soil and, after 16.5 yr, 16% of the residue 15N input ...
Erik Steen Jensen, Guillaume Laberge, Heal, Henrik Hauggaard-Nielsen, Jenkinson, Jensen, Jensen, Jensen, Jensen, Ladd, Per Ambus, Voroney   +11 more
core   +1 more source