Results 71 to 80 of about 24,784,454 (399)

Intramolecular Down‐ and Up‐Conversion in Dimeric Tetracene Complexes Centered via Platinum(II) and Palladium(II)

Advanced Functional Materials, EarlyView.
Metal‐tetracene dimeric complexes are synthesized through the pyridyl coordination to either Pt(II) or Pd(II). Photophysical properties are systematically compared as a function of the metal using steady‐state and time‐resolved spectroscopy. The Pt(II) dimer exhibits efficient intramolecular singlet fission and subsequent intramolecular up‐conversion ...
Yifan Bo, Yuxuan Hou, Melchor Matabuena, Rik R. Tykwinski, Dirk M. Guldi   +4 more
wiley   +1 more source

D/H ratios of the inner Solar System

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2017
The original hydrogen isotope (D/H) ratios of different planetary bodies may indicate where each body formed in the Solar System. However, geological and atmospheric processes can alter these ratios through time.
L. Hallis
semanticscholar   +1 more source

Understanding the secular variability of solar irradiance: the potential of Ca II K observations

Journal of Space Weather and Space Climate
With the increasing concern about climate change, it is important to have accurate information on the individual contributions by the potential driving agents, solar variability being one of them.
Chatzistergos Theodosios, Krivova Natalie A., Ermolli Ilaria   +2 more
doaj   +1 more source

Review: A Coherent and Comprehensive Model of the Evolution of the Outer Solar System [PDF]

, 2010
Since the discovery of the first extra-solar planets, we are confronted with the puzzling diversity of planetary systems. Processes like planet radial migration in gas-disks and planetary orbital instabilities, often invoked to explain the exotic orbits ...
Adams, Alessandro Morbidelli, Augereau, Batygin, Bottke, Brasser, Chiang, Chiang, Dones, Duncan, Fernandez, Gomes, Gomes, Gomes, Hahn, Heppenheimer, Jewitt, Kenyon, Kortenkamp, Lagrange, Levison, Levison, Levison, Marzari, Masset, Michtchenko, Morbidelli, Morbidelli, Morbidelli, Morbidelli, Morbidelli, Nesvorný, O'Brien, Pierens, Thommes, Tsiganis, Walsh, Weidenschilling, Wetherill, Youdin, Ćuk   +40 more
core   +5 more sources

Cu‐Based MOF/TiO2 Composite Nanomaterials for Photocatalytic Hydrogen Generation and the Role of Copper

Advanced Functional Materials, EarlyView.
HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan, Marie Le Pivert, Alireza Ranjbari, Diana Dragoe, Daniel Bahena‐Uribe, Christophe Colbeau‐Justin, Christian Herrero, Dorota Rutkowska‐Zbik, Johnny Deschamps, Hynd Remita   +9 more
wiley   +1 more source

Learning solar system using PhET simulation to improve students’ understanding and motivation

, 2018
This research investigated the implementation of PhET simulation on students’ understanding and motivation in learning the Solar system. The method used in this research was quasi-experimental with matching pretest-posttest group design.
E. Prima, Aldia Ridwani Putri, N. Rustaman   +2 more
semanticscholar   +1 more source

Jupiter’s decisive role in the inner Solar System’s early evolution [PDF]

Proceedings of the National Academy of Sciences of the United States of America, 2015
Significance The Solar System is an unusual member of the galactic planetary census in that it lacks planets that reside in close proximity to the Sun.
K. Batygin, G. Laughlin
semanticscholar   +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

Reliability Modeling and Evaluation of Urban Multi-Energy Systems: A Review of the State of the Art and Future Challenges

IEEE Access, 2020
Urban multi-energy systems (UMESs) are integrated energy systems (IESs) which can alleviate the current energy crisis, improve energy utilization and realize multi-energy complementarity of modern.
Jun He, Zhijun Yuan, Xiaoling Yang, Wentao Huang, Yicong Tu, Yi Li   +5 more
doaj   +1 more source

Spatial and temporal learning representation for end-to-end recording device identification

EURASIP Journal on Advances in Signal Processing, 2021
Deep learning techniques have achieved specific results in recording device source identification. The recording device source features include spatial information and certain temporal information.
Chunyan Zeng, Dongliang Zhu, Zhifeng Wang, Minghu Wu, Wei Xiong, Nan Zhao   +5 more
doaj   +1 more source