Results 51 to 60 of about 275,445 (328)

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. L. Peterson, N. Meezan, S. Le Pape, Gilbert W. Collins, R. Jeanloz, R. Hemley   +14 more
semanticscholar   +1 more source

Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)

Advanced Functional Materials, EarlyView.
Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao, Christian Weinberger, Jakob Steube, Matthias Bauer, Martin Brehm, Michael Tiemann   +5 more
wiley   +1 more source

Effects of helium irradiation damage on deuterium plasma-driven permeation through tungsten coated RAFM steel

Nuclear Fusion
In future fusion reactors, the first wall will be irradiated with hydrogen fuel (deuterium (D), tritium (T)) and helium (He) with low energies. In this work, the effects of He plasma irradiation on D permeation through tungsten (W) coated reduced ...
Yue Xu, Xiao-Ping Tian, Hong-Yan Tan, Hai-Ying Fu, Jun-Jie Ni, Lai-Ma Luo, Yu-Cheng Wu   +6 more
doaj   +1 more source

Heavy hydrogen in the stratosphere [PDF]

, 2003
We report measurements of the deuterium content of molecular hydrogen (H2) obtained from a suite of air samples that were collected during a stratospheric balloon flight between 12 and 33 km at 40º N in October 2002. Strong deuterium enrichments of up to
Engel, Andreas, Rhee, Tae Siek, Röckmann, Thomas   +2 more
core   +4 more sources

Controls on Deuterium Excess across Asia

Géosciences, 2018
Deuterium excess (d-excess) is a second-order stable isotope parameter measured in meteoric water to understand both the source of precipitation and the evolution of moisture during transport.
J. Bershaw
semanticscholar   +1 more source

Scalable Polyelectrolyte Complex‐Based Sorbent With Hourly Sorption−Desorption Cycles for Multicyclic Atmospheric Water Harvesting in Arid Environments

Advanced Functional Materials, EarlyView.
A polyelectrolyte complex‐based sorbent is produced by scalable, environmentally benign aqueous phase inversion. Its porous, LiCl‐ and GO‐integrated architecture enables hourly adsorption−desorption cycles at low relative humidity (RH < 30%). A large‐scale prototype achieves multicyclic, solar‐driven atmospheric water harvesting of 1.37 L kg−1 day−1 ...
Seung‐Hwan Oh, Incheol Heo, Won Cheol Yoo, Soo‐Hyung Choi   +3 more
wiley   +1 more source

Path integral Monte Carlo calculations of helium and hydrogen-helium plasma thermodynamics and of the deuterium shock Hugoniot

, 2006
In this work we calculate the thermodynamic properties of hydrogen-helium plasmas with different mass fractions of helium by the direct path integral Monte Carlo method.
Belov S I, Ebeling W, Ebeling W, Filinov V S, Knaup M, Kraeft W D, Lyon S P, M Bonitz, Norman G E, P R Levashov, Schlanges M, V E Fortov, V S Filinov, Zamalin V M   +13 more
core   +1 more source

Deuterated formaldehyde in rho Ophiuchi A [PDF]

, 2010
From mapping observations of H2CO, HDCO, and D2CO, we have determined how the degree of deuterium fractionation changes over the central 3'x3' region of rho Oph A.
Andre, André, André, André, Asplund, Asvany, B. Larsson, B. Parise, Bachiller, Bacmann, Bensch, Castelaz, Ceccarelli, Ceccarelli, Ceccarelli, Crapsi, Di Francesco, Di Francesco, Emprechtinger, Frerking, Garrod, Gerlich, Goldsmith, Green, Güsten, Herbst, Herbst, Hidaka, Jayawardhana, Jørgensen, Klein, Larsson, Linsky, Lis, Liseau, Liseau, Loinard, Loinard, Loinard, Loinard, Lombardi, Loren, Lucas, Maercker, Mangum, Maret, Motte, Muders, Müller, Müller, Nagaoka, Nummelin, P. Bergman, Pardo, Parise, Parise, Parise, Parise, Pottage, R. Liseau, Roberts, Rodgers, Roueff, Roueff, Roueff, Rybicki, Rybicki, Snow, Turner, Turner, Vassilev, Ward-Thompson, Watanabe, Wouterloot   +73 more
core   +2 more sources

Beyond the Edge: Charge‐Transfer Excitons in Organic Donor‐Acceptor Cocrystals

Advanced Functional Materials, EarlyView.
Complex excitonic landscapes in acene–perfluoroacene cocrystals are unveiled by polarization‐resolved optical spectroscopy and many‐body theory. This systematic study of a prototypical model system for weakly interacting donor–acceptor compounds challenges common views of charge‐transfer excitons, providing a refined conceptual framework for ...
Sebastian Anhäuser, Ana M. Valencia, Sergei I. Ivlev, Marc Zeplichal, Andreas Terfort, Caterina Cocchi, Gregor Witte   +6 more
wiley   +1 more source

Cholesterol absorption efficiency declines at moderate dietary doses in normal human subjects

Journal of Lipid Research, 1999
While unphysiologically large cholesterol doses are known to reduce percent cholesterol absorption, smaller amounts are reported to have no effect in human subjects.
Richard E. Ostlund, Jr., Matthew S. Bosner, William F. Stenson   +2 more
doaj   +1 more source