Results 41 to 50 of about 274,158 (325)

Deuterium trafficking, mitochondrial dysfunction, copper homeostasis, and neurodegenerative disease

Frontiers in Molecular Biosciences
Deuterium is a natural heavy isotope of hydrogen, containing an extra neutron. Eukaryotic organisms have devised complex metabolic policies that restrict the amount of deuterium reaching the mitochondria, because it damages the ATPase pumps, leading to ...
Stephanie Seneff, Anthony M. Kyriakopoulos, Anthony M. Kyriakopoulos   +2 more
doaj   +1 more source

Double radiative pion capture on hydrogen and deuterium and the nucleon's pion cloud

, 2007
We report measurements of double radiative capture in pionic hydrogen and pionic deuterium. The measurements were performed with the RMC spectrometer at the TRIUMF cyclotron by recording photon pairs from pion stops in liquid hydrogen and deuterium ...
C. J. Batty, D. H. Wright, D. S. Armstrong, D. W. Joseph, H. Brafman, H. W. Baer, J. H. D. Clark, L. I. Lapidus, L. I. Lapidus, M. A. Kovash, M. D. Hasinoff, M. E. Christy, P. A. Zołnierczuk, S. Tripathi, T. P. Gorringe   +14 more
core   +1 more source

Insulator-metal transition in dense fluid deuterium

Science, 2018
Laser-shocking deuterium into metal The conditions in which hydrogen disassociates and becomes an atomic metal occur in high-energy-density environments, such as the interiors of giant planets and nuclear explosions. Celliers et al. trained 168 lasers on
P. Celliers, M. Millot, S. Brygoo, R. McWilliams, D. Fratanduono, J. R. Rygg, A. Goncharov, P. Loubeyre, J. Eggert, J. Peterson, N. Meezan, S. Le Pape, Gilbert W. Collins, R. Jeanloz, R. Hemley   +14 more
semanticscholar   +1 more source

Hands‐on protocol for preparing water‐soluble fractions from agri‐food samples for NMR‐based metabolomics analysis

FEBS Open Bio, EarlyView.
This research protocol outlines a workflow for nuclear magnetic resonance (NMR)‐based metabolomics in the agri‐food sector. Using two case studies—strawberry leaves (solid matrix) and wine (liquid matrix)—it details the procedures for sample preparation, data acquisition, and processing.
Andrea Fernández‐Veloso, Jaime Hiniesta‐Valero, Alejandra Guerra‐Castellano, Miguel A. De la Rosa, Irene Díaz‐Moreno   +4 more
wiley   +1 more source

The biological effects of deuterium present in food

Discover Food
We have evaluated the biological importance of deuterium in foods based on literature data. Deuterium is a stable isotope of hydrogen that occurs naturally in our environment and is specifically enriched in certain foods.
Zoltán Répás, Zoltán Győri, Orsolya Buzás-Bereczki, László G. Boros   +3 more
doaj   +1 more source

The Deuterium-Burning Mass Limit for Brown Dwarfs and Giant Planets

, 2010
There is no universally acknowledged criterion to distinguish brown dwarfs from planets. Numerous studies have used or suggested a definition based on an object's mass, taking the ~13-Jupiter mass (M_J) limit for the ignition of deuterium.
Adam Burrows, Adelberger, Bakos, Barman, Boss, Burrows, Burrows, Burrows, Burrows, Burrows, Chabrier, Chabrier, Chabrier, Cyburt, David S. Spiegel, Guillot, Guillot, Hubeny, John A. Milsom, Lewis, Madhusudhan, Marcy, Marley, Mihalas, Prodanović, Sahrling, Saumon, Sharp, Spergel, Spiegel   +29 more
core   +1 more source

Evaluation of in vitro toxicity of common phytochemicals included in weight loss supplements using 1H NMR spectroscopy

FEBS Open Bio, EarlyView.
We investigated the toxicity of 12 active compounds commonly found in herbal weight loss supplements (WLS) using human liver and colon cell models. Epigallocatechin‐3‐gallate was the only compound showing significant toxicity. Metabolic profiling revealed protein degradation, disrupted energy and lipid metabolism suggesting that the inclusion of EGCG ...
Emily C. Davies, Garth L. Maker, Ian F. Musgrave, Samantha Lodge   +3 more
wiley   +1 more source

Deuteron Photodissociation in Ultraperipheral Relativistic Heavy-Ion on Deuteron Collisions

, 2003
In ultraperipheral relativistic deuteron on heavy-ion collisions, a photon emitted from the heavy nucleus may dissociate the deuterium ion. We find deuterium breakup cross sections of 1.38 barns for deuterium-gold collisions at a center of mass energy of
A. Trzcinska, A.E. Thorlacius, A.I. Akhieser, A.J. Baltz, A.J. Buchmann, C. Adler, C. Adler, C.A. Barnes, C.W. deJager, F. Krauss, G. Baur, G. Baur, M. Chiu, M.L. Rustgi, P. Rossi, R. Bernabei, R. Glauber, R. Moreh, Ramona Vogt, S. Klein, S.J. Brodsky, Spencer Klein, Y. Birenbaum   +22 more
core   +5 more sources

Atomic Deuterium Adsorbed on the Surface of Liquid Helium [PDF]

, 2000
We investigate deuterium atoms adsorbed on the surface of liquid helium in equilibrium with a vapor of atoms of the same species. These atoms are studied by a sensitive optical method based on spectroscopy at a wavelength of 122 nm, exciting the 1S-2P ...
A. I. Safonov, A. P. Mosk, A. P. Mosk, B. DeMarco, C. C. Bradley, C. C. Bradley, D. G. Fried, I. F. Silvera, I. F. Silvera, I. Shinkoda, K. B. Davis, M. E. Hayden, M. H. Anderson, M. W. Reynolds, M. W. Reynolds, O. J. Luiten, R. Mayer, T. Arai, T. W. Hijmans   +18 more
core   +2 more sources

Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma

Advanced Engineering Materials, EarlyView.
The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie, David Kramer, Thomas Scheithauer, Hans Jürgen Maier, Thomas Hassel   +4 more
wiley   +1 more source