Results 91 to 100 of about 406,860 (186)

The theoretical red edge of the RR Lyrae gap. II - Dependence of the red edge on luminosity and composition, and observational consequences

The Astrophysical Journal, 1977
The theoretical location of the red edge of the RR Lyrae Gap is computed for two luminosities and two compositions. An increase in luminosity or an increase in helium abundance decreases the effective temperature of the red edge. A comparison of the width of the instability strip with observations indicates that Yapprox. =0.3. The effects of convection
openaire   +1 more source

HIGH RESOLUTION TEMPORAL NORMALIZED DIFFERENCE VEGETATION INDICES FOR SPECIFIC CROP IDENTIFICATION [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
In many applications of the remote sensing, an user is often interested in identifying specific land cover only while other classes may be of no interest.
P. Upadhyay, S. K. Ghosh, A. Kumar
doaj   +1 more source

Assessment of AVIRIS data from vegetated sites in the Owens Valley, California [PDF]

Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) data were acquired from the Bishop, CA area, located at the northern end of the Owens Valley, on July 30, 1987.
Defeo, N. J., Elvidge, Christopher D., Rock, B. N.   +2 more
core   +1 more source

Identification of Rice Sheath Blight through Spectral Responses Using Hyperspectral Images

Sensors, 2020
Sheath blight (ShB), caused by Rhizoctonia solani AG1-I, is one of the most important diseases in rice worldwide. The symptoms of ShB primarily develop on leaf sheaths and leaf blades.
Fenfang Lin, Sen Guo, Changwei Tan, Xingen Zhou, Dongyan Zhang   +4 more
doaj   +1 more source

Synthesis and optoelectronic properties of new ethynylated pyrazine derivatives [PDF]

, 2003
Several diaryleneethynylpyrazine derivatives, in which the pyrazine unit is electron-deficient, have been synthesised using Sonogashira palladium-catalysed cross-coupling reactions.
Zhao, Liang
core  

Estimating Biomass of Native Grass Grown under Complex Management Treatments Using WorldView-3 Spectral Derivatives

Remote Sensing, 2017
The ability of texture models and red-edge to facilitate the detection of subtle structural vegetation traits could aid in discriminating and mapping grass quantity, a challenge that has been longstanding in the management of grasslands in southern ...
Mbulisi Sibanda, Onisimo Mutanga, Mathieu Rouget, Lalit Kumar   +3 more
doaj   +1 more source

An operational solution to acquire multispectral images with standard light cameras : Characterization and acquisition guidelines [PDF]

, 2007
In order to develop a low-cost and easy to implement technical solution to map inside-field spatial variability, and to explore its relationship with crop conditions, several experiments were conducted using ultra-light aircraft and Unmanned Aerial ...
Bégué, Agnès, Labbé, Sylvain, Lebourgeois, Valentine, Mallavan, Benjamin, Roux, B.   +4 more
core  

Observation of asymmetric spectrum broadening induced by silver nanoparticles in a heavy-metal oxide glass

, 2011
We demonstrate experimentally and support by a theoretical analysis an effect of asymmetric spectrum broadening, which results from doping of silver nanoparticles into a heavy-glass matrix, 90(0.5WO3-0.3SbPO4-0.2PbO)-10AgCl.
Agrawal G. P., B. A. Bregadiolli, B. A. Malomed, Denisyuk I. Fokina M., M. Nalin, N. Zhavoronkov, R. Driben, Schmid G.   +7 more
core   +1 more source

Red-edge laser action from borondipyrromethene dyes

Journal of Applied Physics, 2010
Long-wavelength fluorescent dyes with improved efficiency and stability are required to realize new photoelectronic and biophotonic applications. We have designed and synthesized novel 2,6- or 3,5-substituted BODIPY (BDP) dyes by a simple protocol to reach wavelength-finely tunable laser action from 600 to 725 nm.
García-Moreno, I., Zhang, Dakui, Costela González, Ángel, Martín, María Virginia, Sastre, Roberto, Xiao, Yi   +5 more
openaire   +2 more sources

Global asteroseismic properties of solar-like oscillations observed by Kepler : A comparison of complementary analysis methods

, 2011
We present the asteroseismic analysis of 1948 F-, G- and K-type main-sequence and subgiant stars observed by the NASA {\em Kepler Mission}. We detect and characterise solar-like oscillations in 642 of these stars.
A. Bonanno, A.-M. Broomhall, Appourchaux, Appourchaux, B. Mosser, Baglin, Ballot, Bedding, Bedding, Benomar, Bonanno, Borucki, Brewer, Brown, Brown, Brown, C. Karoff, C. Régulo, Campante, Chaplin, Chaplin, Chaplin, Christensen-Dalsgaard, Christensen-Dalsgaard, D. A. Caldwell, D. Huber, D. Salabert, D. Stello, Dall, Deheuvels, E. Corsaro, Frandsen, G. A. Verner, García, Gilliland, Gilliland, Gilliland, Harvey, Hekker, Hekker, Hekker, Huber, Huber, Huber, I. W. Roxburgh, J. Ballot, J. L. Christiansen, Jenkins, Karoff, Karoff, Kjeldsen, Kjeldsen, Kjeldsen, Kjeldsen, Koch, M. N. Fanelli, Mathur, Mathur, Mosser, Mosser, Mosser, P. Gaulme, R. A. García, R. Handberg, R. New, Roxburgh, Roxburgh, Roxburgh, Roxburgh, Roxburgh, S. Hekker, S. Mathur, Samadi, Stello, Stello, Stello, T. Appourchaux, T. L. Campante, T. R. Bedding, T. R. White, Toutain, Verner, W. J. Chaplin, Y. Elsworth   +83 more
core   +3 more sources