Results 61 to 70 of about 16,231 (179)

Direct experimental measurement of the solubility of hydrogen isotopes in the Eurofer-97 RAFM

Nuclear Materials and Energy
Accurate knowledge of hydrogen isotopes transport properties in structural materials of interest for Breeding Blankets (BB) and Tritium Extraction and Recovery (TER) systems is fundamental for experiments, modelling, safety and design activities.
Igor Peñalva, María Urrestizala, Natalia Alegría, Marcelo Roldán, Marta Malo   +4 more
doaj   +1 more source

Small understory trees increase growth following sustained drought in the Amazon

New Phytologist, Volume 249, Issue 6, Page 2787-2799, March 2026.
Summary Droughts pose a major threat to the Amazon rainforest, yet the mechanisms enabling trees to maintain growth under prolonged drought remain poorly understood, particularly in the understory layer. We leveraged a 22‐yr Throughfall Exclusion (TFE) in a 1‐ha plot in eastern Amazonia, paired with a Control plot, to test whether small understory ...
Mateus C. Silva, David C. Bartholomew, André L. Giles, Paulo R. L. Bittencourt, Pablo Sanchez‐Martinez, Lion R. Martius, Vanessa N. Rodrigues, Rachel Selman, João P. Reis, Grazielle S. Teodoro, Rafael S. Oliveira, Oliver Binks, Maurizio Mencuccini, João A. Silva Junior, Antonio C. L. da Costa, Patrick Meir, Lucy Rowland   +16 more
wiley   +1 more source

Hydrogen isotope exchange in proton-conducting oxides during proton and deuteron irradiation [PDF]

, 2013
It has been found that during accelerator beam deuteron irradiation of a proton-conducting oxide containing protium H/D isotope exchange between beam ions and dissolved ions takes place.
Balakireva, V. B., Gorelov, V. P., Kurennykh, T. E., Obukhov, S. I., Vykhodets, E. V., Vykhodets, V. B.   +5 more
core   +1 more source

Production and launch studies of cryogenic pellets for the ITER disruption mitigation system

Nuclear Fusion
A support laboratory has been set up to study pellet production, launch and shattering of cryogenic protium, deuterium, and neon pellets for the ITER disruption mitigation system, which plans to use 28.5 × 57 mm (diameter × length) protium, neon an ...
Sándor Zoletnik, Gergely Bartók, Attila Buzás, Gábor Cseh, Dániel Dunai, Gábor Gárdonyi, Sándor Hegedűs, Gábor Kocsis, Marcell Málics, Domonkos Nagy, Dániel Imre Réfy, Tamás Szabolics, Tamás Szepesi, Márton Vavrik, Miklós Vécsei, Erik Walcz, Stefan Jachmich, Uron Kruezi, Michael Lehnen   +18 more
doaj   +1 more source

Strukturrevision des C16‐Sesquiterpens Hegelenether und der Mechanismus der C6‐Methylierung in der Terpenbiosynthese

Angewandte Chemie, Volume 138, Issue 9, 23 February 2026.
Die Struktur des nicht‐kanonischen C16‐Sesquiterpens Hegelenether wurde zur Struktur von Marxdiol revidiert und seine absolute Konfiguration bestimmt. Isotopenmarkierungsexperimente klärten den stereochemischen Verlauf der an seiner Biosynthese beteiligten Methyltransferase auf.
Heng Li, Gregor Schnakenburg, Michael Groll, Jeroen S. Dickschat   +3 more
wiley   +1 more source

The Dual Origin of the Terrestrial Atmosphere

, 2003
The origin of the terrestrial atmosphere is one of the most puzzling enigmas in the planetary sciences. It is suggested here that two sources contributed to its formation, fractionated nebular gases and accreted cometary volatiles.
Abe, Anders, Ballentine, Balsiger, Bar-Nun, Bar-Nun, Benz, Bockelée-Morvan, Burnard, Busemann, Caffee, Chen, Chyba, Chyba, Dauphas, Dauphas, Dauphas, Dauphas, Dauphas, Dauphas, Delsemme, Delsemme, Eberhardt, Holland, Honda, Honda, Hunten, Hunten, Ihaka, Iro, Jagoutz, Kerridge, Kimura, Kleine, Kunz, Laufer, Marty, Marty, Marty, Maréchal, Mathew, Mathew, Matsui, Matsumoto, Mazor, Meier, Meisel, Meisel, Morbidelli, Moreira, Moreira, Nicolas Dauphas, Notesco, Notesco, Owen, Owen, Owen, Owen, Ozima, Ozima, Ozima, Pepin, Pepin, Pepin, Pepin, Pepin, Pepin, Podosek, Porcelli, Porcelli, Press, Sagan, Sarda, Sasaki, Schoenberg, Shoemaker, Swindle, Swindle, Tolstikhin, Trieloff, Walker, Wieler, Wieler, Yamamoto, Yin, Yokochi, Zahnle, Zahnle, Zahnle, Zahnle, Zahnle, Zhang   +91 more
core   +1 more source

Differences in xylem and leaf hydraulic traits explain differences in drought tolerance among mature Amazon rainforest trees [PDF]

, 2017
Considerable uncertainty surrounds the impacts of anthropogenic climate change on the composition and structure of Amazon forests. Building upon results from two large-scale ecosystem drought experiments in the eastern Brazilian Amazon that observed ...
da Costa, Antonio Carlos Lola, de Oliveira, Alex A. R., Meir, Patrick, Moorcroft, Paul R., Powell, Thomas L., Saleska, Scott R., Wheeler, James K.   +6 more
core   +1 more source

Highly accurate bound state calculations of the two-center molecular ions by using the universal variational expansion for three-body systems

, 2017
The universal variational expansion for the non-relativistic three-body systems is explicitly constructed. Three-body universal expansion can be used to perform highly accurate numerical computations of the bound state spectra in arbitrary three-body ...
Frolov, Alexei M
core   +1 more source

Morfologia de frutos, sementes e plântulas de nove espécies de Protium Burm. f. (Burseraceae) da Amazônia Central, Brasil Fruit, seed and seedling morphology of nine species of Protium Burm.f. (Burseraceae) from Central Amazonia, Brazil

Acta Botânica Brasílica, 2007
O presente estudo teve como objetivo descrever para nove espécies de Protium, a morfologia desde a germinação até a formação de plântulas, além de caracterizar frutos e sementes e avaliar a utilidade destes caracteres na sistemática do grupo.
Maria de Fátima Figueiredo Melo, Sheron Torres de Macedo, Douglas Charles Daly   +2 more
doaj   +1 more source

Chemical and Biological Properties of Hymenaea courbaril L.: A Review

Chemistry &Biodiversity, Volume 23, Issue 2, February 2026.
PRISMA‐style flowchart showing the screening process of studies identified and selected in the review has been added to the attachments. ABSTRACT Hymenaea courbaril L., commonly known as jatobá, is a plant traditionally used by native populations for medicinal purposes, in addition to providing edible fruits and durable wood for construction.
Cicera Alane Coelho Gonçalves, Geane Gabriele de Oliveira Souza, Ana Maria Fernandes Duarte, Joice Barbosa do Nascimento, Fázia Fernandes Galvão Rodrigues, José Galberto Martins da Costa, Fabíola Fernandes Galvão Rodrigues   +6 more
wiley   +1 more source