Results 61 to 70 of about 229,895 (346)
Remote SensingTo date, various methods have been proposed for calibrating polarimetric synthetic aperture radar (SAR) using distributed targets. Some studies have utilized the covariance matching estimation technique (Comet) for SAR data calibration.
Jingke Liu, Lin Liu, Xiaojie Zhou
doaj +1 more source
EPOXI Mission: Comet on a Stick [PDF]
, 2009 In this activity, students examine their concepts of a comet by designing and building a model. The goal is to have students replicate the scientific processes of observing, modeling, forming an explanation, making new observations, and revising. In this
John Risvey
core
Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization
Advanced Materials Interfaces, EarlyView.Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan +6 more
wiley +1 more source
Nearly Three Centuries of Lava Flow Subsidence at Timanfaya, Lanzarote
Geochemistry, Geophysics, Geosystems, 2022 The 1730–1736 eruption on Lanzarote was one of the most significant volcanic eruptions to occur on the Canary Islands, with lavas covering over 200 km2.
Victoria Purcell +6 more
doaj +1 more source
Cyanogen, cyanoacetylene, and acetonitrile in comet 67P and their relation to the cyano radical [PDF]
, 2021 Nora Hänni +8 more
openalex +1 more source
Structural Colors from Ultrathin Lignin Films
Advanced Optical Materials, EarlyView.Thickness‐dependent structural colors in ultrathin lignin films generate a full visible palette, tuned simply by solution concentration and spin speed. Abstract Structural colors offer a sustainable alternative to toxic pigments and dyes, yet their realization from lignin, the most abundant aromatic biopolymer, has remained elusive.
Bang An +6 more
wiley +1 more source
Systematic satellite observations of the impact of aerosols from passive volcanic degassing on local cloud properties [PDF]
Atmospheric Chemistry and Physics, 2014 The impact of volcanic emissions, especially from passive degassing and minor explosions, is a source of uncertainty in estimations of aerosol indirect effects.
S. K. Ebmeier +4 more
doaj +1 more source
Frozen to death? -- Detection of comet Hale-Bopp at 30.7 AU
, 2011 Comet Hale--Bopp (C/1995 O1) has been the single most significant comet encountered by modern astronomy, still having displayed significant activity at 25.7 AU solar distance in late 2007.
A’Hearn +29 more
core +1 more source
Advanced Optical Materials, EarlyView.Manipulating the product generation yield is achieved on a model plasmonic resonance‐driven reaction by tuning the nonthermal effects of localized surface plasmonic resonance on an elliptical Au‐TiO2 nanopillar metasurface. Asymmetric configuration of the elliptical nanopillar array governs the polarization‐dependent optical properties redshifting the ...
Ning Lyu +6 more
wiley +1 more source
The nucleus of 103P/Hartley 2, target of the EPOXI mission
, 2010 103P/Hartley 2 was selected as the target comet for the Deep Impact extended mission, EPOXI, in October 2007. There have been no direct optical observations of the nucleus of this comet, as it has always been highly active when previously observed.
C. Snodgrass +14 more
core +1 more source