Results 61 to 70 of about 62,844 (248)
Organocatalytic C─O Bond Cleavage and Asymmetric Transformations via [1,3]‐Sigmatropic Rearrangement
Advanced Science, EarlyView.A direct asymmetric strategy for fulfilling the functional group transfer by aryl ether cleavage and migration is developed, representing the first Brønsted base‐catalyzed asymmetric [1,3]‐sigmatropic rearrangement reaction. The resulting chiral benzofuran products generated through this strategy exhibit significant 3D‐dimensionality and demonstrate ...
Lei Peng +7 more
wiley +1 more source
Supernova origin of cosmic rays from a gamma-ray signal in the Constellation III region of the Large Magellanic Cloud [PDF]
Phys. Rev. Lett. 119, 191102 (2017), 2017 Cosmic rays could be produced via shock acceleration powered by supernovae. The supernova hypothesis implies that each supernova injects on average some 1e50 erg in cosmic rays, while the shock acceleration model predicts a powerlaw cosmic ray spectrum with the slope close to 2.
arxiv +1 more source
Advanced Electronic Materials, EarlyView.A blackbody‐sensitive infrared photodetector comprised of an open‐shell conjugated polymer demonstrates high sensitivity without cooling and exceptional radiation hardness, surpassing inorganic compound semiconductor devices. This functionality, inherent to the polymer semiconductor, provides a new frontier for low‐cost, size, weight, and power space ...
Anthony R. Benasco +10 more
wiley +1 more source
Supernovae and cosmology [PDF]
General Relativity and Gravitation, 2007 The extreme luminosity and their fairly unique temporal behaviour have made supernovae a superb tool to measure distances in the universe. As complex astrophysical events they provide interesting insights into explosion physics, explosive nucleosynthesis, hydrodynamics of the explosion and radiation transport.
openaire +4 more sources
Toward Reuse‐Ready PV: A Perspective on Recent Advances, Practices, and Future Challenges
Advanced Energy and Sustainability Research, EarlyView.This perspective study sheds light on current research and future challenges toward higher PV reuse readiness in PV industry. It highlights qualification methods, PV repair strategies, and standardization efforts for PV reuse. A four‐step example of triage‐for‐reuse framework is discussed, as well as recent advances in PV repair strategies for reuse ...
Ioannis (John) A. Tsanakas +8 more
wiley +1 more source
BMC Biology, 2018 Background Photosensitizing fluorescent proteins, which generate reactive oxygen species (ROS) upon light irradiation, are useful for spatiotemporal protein inactivation and cell ablation.
Yemima Dani Riani +3 more
doaj +1 more source
Advanced Energy and Sustainability Research, EarlyView.The energy transition increases electrical demand, primarily met by renewable sources, potentially raising system costs. In this study, the economic effects of flexible demand on solar integration and generation costs in Italy for 2030 and 2040 are assessed.
Elisa Veronese +3 more
wiley +1 more source
The high energy X-ray probe (HEX-P): science overview
Frontiers in Astronomy and Space SciencesTo answer NASA’s call for a sensitive X-ray observatory in the 2030s, we present the High Energy X-ray Probe (HEX-P) mission concept. HEX-P is designed to provide the required capabilities to explore current scientific questions and make new discoveries ...
Javier A. García +74 more
doaj +1 more source
Supernovae and neutrinos [PDF]
Nuclear Physics B - Proceedings Supplements, 2003 Invited talk at the XXth International Conference on Neutrino Physics and Astrophysics (Neutrino 2002), Munich, Germany, May 25-30 ...
openaire +4 more sources
Symposium - International Astronomical Union, 1982 Three supernovae have so far been detected in the radio range shortly after their optical outbursts. All are Type IIs. A fourth supernova, a Type I, is being monitored for radio emission but, at an age of approximately one year, has not yet been detected.
K. W. Weiler +3 more
openaire +1 more source