Results 71 to 80 of about 96,800 (307)

Reflections on the solar-stellar connection [PDF]

open access: yesPublications of the Astronomical Society of the Pacific, 1985
The achievements of optical astronomy in the investigation of the sun as a typical star in connection with the study of stellar evolution are reviewed, with emphasis given to the accomplishments of George Ellery Hale. Consideration is given to the discovery of magnetic fields on the sun; measurements of temperatures in the solar corona; and the early ...
openaire   +1 more source

Spectrophotometer-Integrating-Sphere System for Computing Solar Absorptance [PDF]

open access: yes
A commercially available ultraviolet, visible, near-infrared spectrophotometer was modified to utilize an 8-inch-diameter modified Edwards-type integrated sphere.
Perry, John E., Jr.   +2 more
core   +1 more source

1I/2017 U1 (`Oumuamua) is Hot: Imaging, Spectroscopy and Search of Meteor Activity [PDF]

open access: yes, 2017
1I/2017 U1 (`Oumuamua), a recently discovered asteroid in a hyperbolic orbit, is likely the first macroscopic object of extrasolar origin identified in the solar system.
Brown, Peter G.   +3 more
core   +3 more sources

Kinetic Insights into Precursor‐Assisted Soft Sphere Close Packing Revealed by In Situ GISAXS with Implications for Gas Sensing

open access: yesAdvanced Functional Materials, EarlyView.
The versatile precursor‐assisted soft sphere close packing during slot‐die coating is investigated with in situ X‐ray scattering. The soft crystallization pathways towards a close packing involve multistep structural transitions such as surface nucleation, in‐plane, and out‐of‐plane crystallization.
Guangjiu Pan   +14 more
wiley   +1 more source

A simplified treatment of SiB's land surface albedo parameterization [PDF]

open access: yes
The earlier presented surface albedo parameterization is simplified by assuming that the reflectance of direct solar radiation is a simple function of solar zenith angle.
Koster, Randal D., Suarez, Max J.
core   +1 more source

Recovery of surface reflectance spectra and evaluation of the optical depth of aerosols in the near-IR using a Monte-Carlo approach: Application to the OMEGA observations of high latitude regions of Mars

open access: yes, 2011
We present a model of radiative transfer through atmospheric particles based on Monte Carlo methods. This model can be used to analyze and remove the contribution of aerosols in remote sensing observations.
B. Gondet   +42 more
core   +1 more source

Z‐Scheme Water Splitting Systems Based on Solid‐State Electron Conductors

open access: yesAdvanced Functional Materials, EarlyView.
This review examines the latest advances in Z‐scheme overall water splitting (OWS) systems for solar hydrogen production. These systems consist of suspended or immobilized hydrogen evolution photocatalysts (HEPs) and oxygen evolution photocatalysts (OEPs).
Chen Gu   +3 more
wiley   +1 more source

Size-Dispersed Calcium Phosphate-Based Paints for Sustainable, Durable Cool Roof Applications

open access: yesEnergies
Passive radiative cooling materials are widely recognized as attractive innovations for reducing emissions and expanding life-saving cooling access. Despite immense research attention, the adoption of such technologies is limited largely due to a lack of
Andrew Caratenuto   +3 more
doaj   +1 more source

On the Angular Variation of Solar Reflectance of Snow [PDF]

open access: yes
Spectral and integrated solar reflectance of nonhomogeneous snowpacks were derived assuming surface reflection of direct radiation and subsurface multiple scattering.
Chang, A. T. C., Choudhury, B. J.
core   +1 more source

High performance of mixed halide perovskite solar cells: role of halogen atom and plasmonic nanoparticles on the ideal current density of cell

open access: yes, 2017
To be able to increase the efficiency of perovskite solar cells which is one of the most substantial challenges ahead in photovoltaic industry, the structural and optical properties of perovskite CH3NH3PbI3-xBrx for values x=1-3 have been studied ...
Mohebpour, Mohammad Ali   +3 more
core   +1 more source

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