Results 81 to 90 of about 2,285,311 (372)

A Tracer Diffusion Study of Diverse Photo‐Ionic Phenomena in Strontium Titanate

open access: yesAdvanced Functional Materials, EarlyView.
Two strong interfacial photo‐ionic effects are demonstrated for the model system SrTiO3 through the application of isotope exchange experiments: UV illumination is found to enhance the oxygen surface exchange coefficient by several orders of magnitude and to depress the surface space‐charge potential substantially.
David M. Schwenkel   +3 more
wiley   +1 more source

Evolution of the pygmy dipole resonance in nuclei with neutron excess

open access: yes, 2009
The electric dipole excitation of various nuclei is calculated with a Random Phase Approximation phenomenological approach. The evolution of the strength distribution in various groups of isotopes, oxygen, calcium, zirconium and tin, is studied.
Anguiano, M.   +4 more
core   +1 more source

Continuum effects and three-nucleon forces in neutron-rich oxygen isotopes. [PDF]

open access: yesPhysical Review Letters, 2012
We employ interactions from chiral effective field theory and compute binding energies, excited states, and radii for isotopes of oxygen with the coupled-cluster method.
G. Hagen   +4 more
semanticscholar   +1 more source

SI‐bioATRP in Mesoporous Silica for Size‐Exclusion Driven Local Polymer Placement

open access: yesAdvanced Functional Materials, EarlyView.
An enzyme‐catalyzed surface‐initiated atom transfer radical polymerization (SI‐bioATRP) of an anionic monomer within mesoporous silica particles, using hemoglobin as a catalyst, allows for controlling the location of the formed polymer via size‐exclusion effects between the nanopores and the biomacromolecules, thereby opening routes to functional ...
Oleksandr Wondra   +8 more
wiley   +1 more source

Stable isotopes in precipitation

open access: yes, 1964
In chapter 2 the isotopic fractionation of water in some simple condensation-evaporation processes are considered quantitatively on the basis of the fractionation factors given in section 1.2. The condensation temperature is an important parameter, which
W. Dansgaard
semanticscholar   +1 more source

Toward Scalable Solutions for Silver‐Based Gas Diffusion Electrode Fabrication for the Electrochemical Conversion of CO2 – A Perspective

open access: yesAdvanced Functional Materials, EarlyView.
In this study, the preparation techniques for silver‐based gas diffusion electrodes used for the electrochemical reduction of carbon dioxide (eCO2R) are systematically reviewed and compared with respect to their scalability. In addition, physics‐based and data‐driven modeling approaches are discussed, and a perspective is given on how modeling can aid ...
Simon Emken   +6 more
wiley   +1 more source

Ancient Modeling of Hydrology Based on Comparison of δo18 Carbonate and the δo13 Crbonate Parishan Lake (Fars Province) Dariush Noorollahi M.Sc Climatology University of Shahid Beheshti Dr. Hassan Lashkari Associate Profesor of Natural Geography University of Shahid Beheshti Maria Amirzade Faculty of Earth science University of Shahid Beheshti [PDF]

open access: yesجغرافیا و توسعه, 2012
Geography and Development 10nd Year - No. 29 - Winter 2013 Received : 31/1/2012   Accepted : 17/7/2012 PP: 28 - 31   Ancient Modeling of Hydrology Based on Comparison of δo18 Carbonate and the δo13 Crbonate Parishan Lake (Fars Province)   Dariush ...
doaj   +1 more source

Self-consistent Continuum Random Phase Approximation calculations with finite-range interactions

open access: yes, 2011
We present a technique which allows us to solve the Random Phase Approximation equations with finite-range interactions and treats the continuum part of the excitation spectrum without approximations. The interaction used in the Hartree-Fock calculations
Anguiano, M.   +3 more
core   +1 more source

Neutrinos from beta processes in a presupernova: probing the isotopic evolution of a massive star [PDF]

open access: yes, 2017
We present a new calculation of the neutrino flux received at Earth from a massive star in the $\sim 24$ hours of evolution prior to its explosion as a supernova (presupernova).
Farmer, Robert J.   +3 more
core   +2 more sources

Oxygen Isotopes for Unraveling Phosphorus Transformations in the Soil–Plant System: A Review

open access: yes, 2014
Soil Sci. Soc. Am. J. 78:38–46 doi:10.2136/sssaj2013.05.0186dgs Received 20 May 2013. *Corresponding author (federica.tamburini@usys.ethz.ch). © Soil Science Society of America, 5585 Guilford Rd., Madison WI 53711 USA All rights reserved. No part of this
F. Tamburini   +4 more
semanticscholar   +1 more source

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