Results 81 to 90 of about 312,228 (284)

Revisiting the pre-main-sequence evolution of stars II. Consequences of planet formation on stellar surface composition

, 2018
We want to investigate how planet formation is imprinted on stellar surface composition using up-to-date stellar evolution models. We simulate the evolution of pre-main-sequence stars as a function of the efficiency of heat injection during accretion ...
Guillot, Tristan, Ida, Shigeru, Kunitomo, Masanobu, Takeuchi, Taku   +3 more
core   +1 more source

Atomic Size Misfit for Electrocatalytic Small Molecule Activation

Advanced Functional Materials, EarlyView.
This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong, Changfan Xu, Huaping Zhao, Yong Lei   +3 more
wiley   +1 more source

The origin of short-lived radionuclides and the astrophysical environment of solar system formation

, 2008
Based on early solar system abundances of short-lived radionuclides (SRs), such as $^{26}$Al (T$_{1/2} = 0.74$ Myr) and $^{60}$Fe (T$_{1/2} = 1.5$ Myr), it is often asserted that the Sun was born in a large stellar cluster, where a massive star ...
Amelin Y., Amelin Y., Anders Meibom, Boss A. P., de Graauw T., Knee L. B. G., Knodlseder J., Larson R. B., Matthieu Gounelle, Meyer B. S., Quitte G., Regelous M., Scalo J. M., Schaller G., Sugiura N., Tachibana S.   +15 more
core   +1 more source

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

Advanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida, Yanjie Wang, Thais A. Rodrigues, Paulo H. H. Nunes, Vagner R. de Mendonça, Paulo H. E. Falsetti, Leticia V. Savazi, Tao He, Alexandra V. Bardakova, Aida V. Rudakova, Jie Tian, Alexei V. Emeline, Osmando F. Lopes, Antonio Otavio T. Patrocínio, Jia Hong Pan, Caue Ribeiro, Detlef W. Bahnemann   +16 more
wiley   +1 more source

On the evolution of a star cluster and its multiple stellar systems following gas dispersal

, 2010
We investigate the evolution, following gas dispersal, of a star cluster produced from a hydrodynamical calculation. We find that when the gas, initially comprising 60% of the mass, is removed, the system settles into a bound cluster containing 30-40% of
Aarseth, Aarseth, Aarseth, Adams, Adams, Allison, Allison, Artigau, Basri, Bastian, Bate, Bate, Bate, Bate, Baumgardt, Benz, Billères, Boily, Boily, Bonnell, Boyd, Burgasser, Béjar, Caballero, Carpenter, Cartwright, Clarke, Close, Close, Delgado-Donate, Duquennoy, Elmegreen, Fellhauer, Fischer, Geyer, Goodwin, Goodwin, Hillenbrand, Hillenbrand, Hillenbrand, Hills, Hubber, Hurley, Jayawardhana, Kouwenhoven, Kraus, Kraus, Kroupa, Kroupa, Kroupa, Kroupa, Lada, Lada, Larson, Low, Luhman, Martín, Mason, Mathieu, Matthew R. Bate, McCaughrean, McMillan, Moeckel, Nickolas Moeckel, Offner, Ostriker, Parker, Portegies Zwart, Preibisch, Radigan, Rees, Reid, Reipurth, Scally, Silk, Silk, Sterzik, Tutukov, Van Albada, Van Den Berk, Verschueren, Von Hoerner, Weidner   +82 more
core   +1 more source

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

Advanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies, Marcos Eduardo G. Carmo, Gonçalves J. Marrenjo, Stephan Reuther, Patrick Ganswindt, Antonio Otavio T. Patrocinio, Thomas Bein, Osmando F. Lopes, Jenny Schneider   +8 more
wiley   +1 more source

NASA's Dawn Mission to Asteroid 4 Vesta [PDF]

, 2011
NASA's Dawn Mission to asteroid 4 Vesta is part of a 13-year robotic space project designed to reveal the nature of two of the largest asteroids in the Main Asteroid Belt of our Solar System. Ceres and Vesta are two complementary terrestrial protoplanets
McFadden, Lucyann A.
core   +1 more source

Enhancing CoFe Catalysts with V2CTX MXene‐Derived Materials for Anion Exchange Membrane Electrolyzers

Advanced Functional Materials, EarlyView.
MXene dervied CoFe composites show increased initial Oxygen Evolution Reaction (OER) activity compared to the pure CoFe and MXene in an Anion Exchange Membrane device. Vanadium vacancies in the MXene plays a role in increased OER activity and hinders Fe leaching in the AEM device over using the pure V2C MXene as a support material for the CoFe ...
Can Kaplan, Karuppasamy Dharmaraj, Thorsten Schultz, Leiqiang Qin, Ningjun Chen, Danielle A. Douglas‐Henry, Bastian Schmiedecke, Merve Buldu‐Akturk, Axel Zuber, Iris Dorbandt, Maximilian Reinhardt, Yael Rodriguez‐Ayllon, Yan Lu, Valeria Nicolosi, Norbert Koch, Johanna Rosen, Michelle P. Browne   +16 more
wiley   +1 more source

Studies of extra-solar OORT clouds and the Kuiper disk [PDF]

This is the second report for NAGW-3023, Studies of Extra-Solar Oort Clouds and the Kuiper Disk. We are conducting research designed to enhance our understanding of the evolution and detectability of comet clouds and disks.
Stern, S. Alan
core   +1 more source

The solar energetic balance revisited by young solar analogs, helioseismology and neutrinos

, 2011
The energetic balance of the Standard Solar Model (SSM) results from an equilibrium between nuclear energy production, energy transfer, and photospheric emission.
Bahcall, Basu, Brun, Brun, Canuto, Couvidat, Fabbian, Gudel, Guzik, Guzik, Hale, Lin, Lopes, Mathur, Piau, Ribas, Sackmann, Turck-Chièze, Turck-Chièze, Turck-Chièze, Turck-Chièze, Turck-Chièze, Turck-Chièze, Wood   +23 more
core   +1 more source