Results 41 to 50 of about 24,784,454 (399)
Spectral analysis for wide energy channels [PDF]
Geoscientific Instrumentation, Methods and Data Systems, 2013 For energetic particle measurements whose spectra follow a power law, it is often challenging to define a characteristic ("effective") energy of an energy channel.
E. A. Kronberg, P. W. Daly
doaj +1 more source
IEEE Access, 2022 In this paper, a two-stage equalization topology based on Zero-Voltage Switching Quasi-Resonant Converter (ZVS QRC) is proposed to solve the problems of long equalization time and low energy utilization of series lithium-ion battery packs.
Li Liao +5 more
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Proterozoic Milankovitch cycles and the history of the solar system
Proceedings of the National Academy of Sciences of the United States of America, 2018 Significance Periodic variations in Earth’s orbit and rotation axis occur over tens of thousands of years, producing rhythmic climate changes known as Milankovitch cycles.
S. Meyers, A. Malinverno
semanticscholar +1 more source
VHF radar measurements of momentum flux using summer polar mesopause echoes
Earth, Planets and Space, 2018 We revisit previously unpublished analysis of observations of the dynamics of the mesopause region over the Norwegian Island of Andøya (69°N, 16°E) made during a 1-week period in summer 1987 during the Middle Atmosphere Cooperation-Summer in Northern ...
Iain M. Reid +3 more
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Vesta and Ceres: crossing the history of the Solar System
, 2011 The evolution of the Solar System can be schematically divided into three different phases: the Solar Nebula, the Primordial Solar System and the Modern Solar System.
Coradini, Angioletta +3 more
core +1 more source
, 1977 A system is disclosed for using solar energy to heat the interior of a structure. The system utilizes a low cost solar collector to heat a recirculating air mass which then flows through a series of interconnected ducts and passageways without the use of
Jensen, R. N.
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FEBS Open Bio, EarlyView.This review provides an overview of bio‐based polymer sources, their unique functional properties and their environmental impact, and addresses their role as sustainable alternatives. It discusses end‐of‐life options, including composting and anaerobic digestion for renewable energy.
Sabina Kolbl Repinc +8 more
wiley +1 more source
EVIDENCE FOR A DISTANT GIANT PLANET IN THE SOLAR SYSTEM [PDF]
, 2016 Recent analyses have shown that distant orbits within the scattered disk population of the Kuiper Belt exhibit an unexpected clustering in their respective arguments of perihelion. While several hypotheses have been put forward to explain this alignment,
K. Batygin, M. Brown
semanticscholar +1 more source
Was Venus the first habitable world of our solar system? [PDF]
Geophysical Research Letters, 2016 Present‐day Venus is an inhospitable place with surface temperatures approaching 750 K and an atmosphere 90 times as thick as Earth's. Billions of years ago the picture may have been very different.
M. Way +7 more
semanticscholar +1 more source
Ozone chemical equilibrium near the Martian nighttime OH* layer: observational constraints
Earth, Planets and SpaceSimultaneous measurements of ozone concentrations and vibrationally excited hydroxyl (OH*) emissions provide a method for determining atomic oxygen (O) and atomic hydrogen (H) concentrations, which are otherwise difficult to measure directly.
Dmitry S. Shaposhnikov +3 more
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