Results 81 to 90 of about 24,784,454 (399)
Solar energy collection system [PDF]
, 1979 A fixed, linear, ground-based primary reflector having an extended curved sawtooth-contoured surface covered with a metalized polymeric reflecting material, reflects solar energy to a movably supported collector that is kept at the concentrated line ...
Miller, C. G., Stephens, J. B.
core +1 more source
, 2016 All the fields of the extended space mission Kepler/K2 are located within the ecliptic. Many solar system objects thus cross the K2 stellar masks on a regular basis.
Berthier, J. +4 more
core +3 more sources
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 +16 more
wiley +1 more source
Origin of compact exoplanetary systems during disk infall
Nature CommunicationsExoplanetary systems that contain multiple planets on short-period orbits appear to be prevalent in the current observed exoplanetary population, yet the processes that give rise to such configurations remain poorly understood.
Raluca Rufu, Robin M. Canup
doaj +1 more source
Shallow and deep feature fusion for digital audio tampering detection
EURASIP Journal on Advances in Signal Processing, 2022 Digital audio tampering detection can be used to verify the authenticity of digital audio. However, most current methods use standard electronic network frequency (ENF) databases for visual comparison analysis of ENF continuity of digital audio or ...
Zhifeng Wang +5 more
doaj +1 more source
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 +8 more
wiley +1 more source
Models of f(R) Cosmic Acceleration that Evade Solar-System Tests [PDF]
, 2007 We study a class of metric-variation fRmodels that accelerates the expansion without a cosmological constant and satisfies both cosmological and solar-system tests in the small-field limit of the parameter space.
Wayne Hu, I. Sawicki
semanticscholar +1 more source
Methane Clathrates in the Solar System [PDF]
Astrobiology, 2015 We review the reservoirs of methane clathrates that may exist in the different bodies of the Solar System. Methane was formed in the interstellar medium prior to having been embedded in the protosolar nebula gas phase.
O. Mousis +10 more
semanticscholar +1 more source
Effect of Subgrains on the Performance of Mono-Like Crystalline Silicon Solar Cells
International Journal of Photoenergy, 2013 The application of Czochralski (Cz) monocrystalline silicon material in solar cells is limited by its high cost and serious light-induced degradation. The use of cast multicrystalline silicon is also hindered by its high dislocation densities and high ...
Su Zhou +6 more
doaj +1 more source
Development of Automatic Solar Tracking System for Small Solar Energy System [PDF]
International Journal of Engineering & Technology, 2018 The main purpose of this paper is to present a novel idea that is based on design and development of an automatic solar tracker system that tracks the Sun's energy for maximum energy output achievement. In this paper, a novel automatic solar tracking system has been developed for small-scale solar energy system.
Mohamud Ahmed Musse +2 more
openaire +1 more source