Results 41 to 50 of about 740,297 (285)

Residual strain and piezoelectric effects in passivated GaAs/AlGaAs core-shell nanowires [PDF]

open access: yes, 2013
International audienceWe observe a systematic red shift of the band-edge of passivated GaAs/Al0.35Ga0.65As core-shell nanowires with increasing shell thickness up to 100 nm.
Besombes, Lucien   +7 more
core   +4 more sources

Optimal Exploitation of the Sentinel-2 Spectral Capabilities for Crop Leaf Area Index Mapping [PDF]

open access: yes, 2012
The continuously increasing demand of accurate quantitative high quality information on land surface properties will be faced by a new generation of environmental Earth observation (EO) missions.
D'Urso, Guido   +4 more
core   +2 more sources

Temperature dependence of the band gap shrinkage due to electron-phonon interaction in undoped n-type GaN

open access: yes, 2005
The photoluminescence spectra of band-edge transitions in GaN is studied as a function of temperature. The parameters that describe the temperature dependence red-shift of the band-edge transition energy and the broadening of emission line are evaluated ...
Adachi S   +5 more
core   +1 more source

ASSESSMENTS OF SENTINEL-2 VEGETATION RED-EDGE SPECTRAL BANDS FOR IMPROVING LAND COVER CLASSIFICATION [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
Abstract. The Multi Spectral Instrument (MSI) onboard Sentinel-2 can record the information in Vegetation Red-Edge (VRE) spectral domains. In this study, the performance of the VRE bands on improving land cover classification was evaluated based on a Sentinel-2A MSI image in East Texas, USA.
S. Qiu, B. He, C. Yin, Z. Liao
openaire   +3 more sources

Estimating Leaf Area Index with a New Vegetation Index Considering the Influence of Rice Panicles

open access: yesRemote Sensing, 2019
The emergence of rice panicle substantially changes the spectral reflectance of rice canopy and, as a result, decreases the accuracy of leaf area index (LAI) that was derived from vegetation indices (VIs).
Jiaoyang He   +8 more
doaj   +1 more source

Optical Control of Topological Quantum Transport in Semiconductors

open access: yes, 2007
Intense coherent laser radiation red-detuned from absorption edge can reactively activate sizable Hall type charge and spin transport in n-doped paramagnetic semiconductors as a consequence of k-space Berry curvature transferred from valence band to ...
A. H. MacDonald   +3 more
core   +1 more source

Photoinduced Intra- and Intermolecular Energy Transfer in Chlorophyll a Dimer [PDF]

open access: yes, 2017
Applying nonadiabatic excited-state molecular dynamics, we investigate excitation energy transfer and exciton localization dynamics in a chlorophyll a (Chla) dimer system at the interface of two monomers of light-harvesting complex II trimer.
Fernández Alberti, Sebastián   +3 more
core   +1 more source

Enhancement of Cyanobacterial Bloom Monitoring in Lake Taihu Using Dual Red-Edge Bands of GF-6/WFV: Multi-Dimensional Feature Combination and Extraction Accuracy Analysis

open access: yesRemote Sensing
Cyanobacterial blooms pose a serious threat to freshwater ecosystems, necessitating accurate remote sensing monitoring. Although red-edge bands show potential in terrestrial monitoring, their multi-dimensional features (i.e., spectral, textural, and ...
Yunxiao Sun   +9 more
doaj   +1 more source

Leaf chlorophyll content retrieval of wheat by simulated RapidEye, Sentinel-2 and EnMAP data

open access: yesJournal of Integrative Agriculture, 2019
Leaf chlorophyll content (LCC) is an important physiological indicator of the actual health status of individual plants. An accurate estimation of LCC can therefore provide valuable information for precision field management.
Bei CUI   +5 more
doaj   +1 more source

Mapping Mangrove Density from Rapideye Data in Central America

open access: yesOpen Geosciences, 2017
Mangrove forests provide a wide range of socioeconomic and ecological services for coastal communities. Extensive aquaculture development of mangrove waters in many developing countries has constantly ignored services of mangrove ecosystems, leading to ...
Son Nguyen-Thanh   +2 more
doaj   +1 more source

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