Results 31 to 40 of about 1,351,325 (354)
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 +40 more
core +5 more sources
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Earth, Planets and Space, 2018 We revisit previously unpublished analysis of observations of the dynamics of the mesopause region over the Norwegian Island of Andøya (69°N, 16°E) made during a 1-week period in summer 1987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
doaj +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.
core +1 more source
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
By dawn or dusk—how circadian timing rewrites bacterial infection outcomes
FEBS Letters, EarlyView.The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo +2 more
wiley +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
doaj +1 more source
, 1981 A solar tracker for a solar collector is described in detail. The collector is angularly oriented by a motor wherein the outputs of two side-by-side photodetectors are discriminated as to three ranges: a first corresponding to a low light or darkness ...
Scott, D. R., White, P. R.
core +1 more source
Detection and measurement of planetary systems with GAIA [PDF]
, 2001 We use detailed numerical simulations and the $\upsilon$ Andromedae, planetary system as a template to evaluate the capability of the ESA Cornerstone Mission GAIA in detecting and measuring multiple planets around solar-type stars in the neighborhood of ...
A. Sozzetti +10 more
core +2 more sources
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
Optimal Planning Method for Power System Line Impedance Based on a Comprehensive Stability Margin
IEEE Access, 2021 With the increasing scale of power systems and the large-scale application of new energy technologies, the planning and construction of future power grids and the stable operation of systems face severe challenges.
Dahu Li +5 more
doaj +1 more source