Results 71 to 80 of about 14,449 (221)
Open Astronomy, 2019 One of the most important problems in astronomy is the cosmological constant problem in which conventional calculation of vacuum energy density using quantum mechanics leads to a value which is ~10123 times more than the vacuum energy estimated from ...
Dikshit Biswaranjan
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Reports on the Progress of Astronomy Standard Magnitudes [PDF]
Monthly Notices of the Royal Astronomical Society, 1954 A. W. J. Cousins, R. H. Stoy
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Universal Entanglement and an Information‐Complete Quantum Theory
Advanced Physics Research, EarlyView.This Perspective summarize an informationcomplete quantum theory which describes a fully quantum world without any classical systems and concepts. Here spacetime/gravity, having to be a physical quantum system, universally entangles matter (matter fermions and their gauge fields) as an indivisible trinity, and encodes information‐complete physical ...
Zeng‐Bing Chen
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Geophysical Monograph Series, Page 263-304., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jessica H. Whiteside +3 more
wiley +3 more sources
Advanced Physics Research, EarlyView.Thermally Activated Delayed Fluorescence (TADF) is widely exploited to achieve high‐efficiency OLEDs. TADF Emitters are normally investigated with transient photoluminescence (PL), which requires the PL to be detected over multiple orders of magnitude in time and intensity.
Stefan Diesing +3 more
wiley +1 more source
Advanced Physics Research, EarlyView.The investigation of the Kondo lattice system CeB6${\rm CeB}_6$ by highly surface sensitive techniques is hampered by difficulties in preparing well‐ordered, atomically flat surfaces. The richness of possible surface terminations and their impact on spectroscopic STM results are discussed.
M. Victoria Ale Crivillero +4 more
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Repeating Nuclear Transients From Repeating Partial Tidal Disruption Events
Astronomische Nachrichten, EarlyView.ABSTRACT Extragalactic nuclear transients that exhibit repeating outbursts can be modeled as the repeated dynamical interaction between bound stars and supermassive black holes (SMBHs). A subset of these transients, with recurrence timescales of months‐to‐years, have been explained as accretion flares from the repeated tidal stripping of a star by an ...
Ananya Bandopadhyay +4 more
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Imperfection in Semiconductors Leading to High Performance Devices
Advanced ScienceSemiconductors form the basis of high‐performance optoelectronic devices, enabling efficient light emission and detection. While crystalline perfection is generally sought to optimize device performance, specific lattice defects can endow materials with ...
Jean‐Yves Duboz +8 more
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Enhanced Electrooxidation of Glycerol to Lactate Over FeOx‐Modified Au Catalysts
Carbon and Hydrogen, EarlyView.A FeOₓ‐modified Au catalyst on nickel foam, fabricated via facile electrodeposition, achieves high‐current‐density (310 mA cm−2) and selective (78.1%) electrooxidation of glycerol to lactate at room temperature, offering a sustainable route for biodiesel by‐product valorization.
Hongji Liu +6 more
wiley +1 more source
Experimental methods in chemical engineering: Atomic absorption spectrometry—AAS
The Canadian Journal of Chemical Engineering, EarlyView.Abstract Elements absorb electromagnetic radiation (light) of a specific wavelength in proportion to the number of atoms in its path. As the atoms absorb this light energy, electrons rise from the ground state to an excited state. In atomic absorption spectrometry (AAS), high temperatures produce clouds of atoms from the sample (atomization) and ...
Emily Cintia Tossi de A. Costa +4 more
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