Results 71 to 80 of about 7,013 (293)

Validation of Space-Based Albedo Products from Upscaled Tower-Based Measurements Over Heterogeneous and Homogeneous Landscapes

Remote Sensing, 2020
Surface albedo is a fundamental radiative parameter as it controls the Earth’s energy budget and directly affects the Earth’s climate. Satellite observations have long been used to capture the temporal and spatial variations of surface albedo
Rui Song, Jan-Peter Muller, Said Kharbouche, Feng Yin, William Woodgate, Mark Kitchen, Marilyn Roland, Nicola Arriga, Wayne Meyer, Georgia Koerber, Damien Bonal, Benoit Burban, Alexander Knohl, Lukas Siebicke, Pauline Buysse, Benjamin Loubet, Montagnani Leonardo, Christophe Lerebourg, Nadine Gobron   +18 more
doaj   +1 more source

Innovative Processing of Compacted Waste Aluminum Alloy Powders via Controlled Remelting and Solidification

Advanced Engineering Materials, EarlyView.
This study demonstrates an efficient recycling route for out‐of‐spec AlSi10Mg atomized powders through compaction and arc remelting followed by suction casting. By correlating compaction load, cooling rate, and resulting microstructure, we show that intermediate pressures (50–80 kN) and rapid cooling refine dendrites, reduce porosity, and enhance ...
Mila Christy de Oliveira, Marcella Gaute Cavalcante Xavier, Abdoul‐Aziz Bogno, Piter Gargarella, José Eduardo Spinelli   +4 more
wiley   +1 more source

The multispectral reflectance of shortwave radiation by agricultural crops in relation with their morphological and optical properties

, 1978
Relations between morphological properties of uniform canopies. optical properties of the leaves and reflection of shortwave radiation, in the visible light region and the near infrared, by crops are the subject of this thesis.The aim of the study was a ...
Bunnik, N.J.J.
core  

Toward a Standard Approach for UAS-Based Multiangular Dataset Collection for BRDF Analysis

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
In this work, we address the bidirectional reflectance distribution function (BRDF) characterization of homogeneous surfaces by means of multiangular datasets acquired with an unmanned aerial system (UAS) carrying a multispectral sensor (MAIA ...
Ilaria Petracca, Daniele Latini, Marco Di Giacomo, Fabrizio Niro, Stefania Bonafoni, Fabio Del Frate   +5 more
doaj   +1 more source

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

Advanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora, Tales V. Lisbôa, Axel Spickenheuer, Rogério J. Marczak, Jakson M. Vassoler   +4 more
wiley   +1 more source

Estimation of soil and vegetation temperatures with multiangular thermal infrared observations: IMGRASS, HEIFE, and SGP 1997 experiments

, 2001
The potential of directional observations in the thermal infrared region for land surface studies is a largely uncharted area of research. The availability of the dual-view Along Track Scanning Radiometer (ATSR) observations led to explore new ...
Menenti, M., Stoll, M.P., Rast, M., Djepa, V., Wang, J., Jia, L., Su, Z., Li, Z.L.   +7 more
core   +1 more source

Evaluation of the Skin Photoprotective Effect of Crataegus monogyna and Rosmarinus officinalis Extracts Using the Hemispheric Directional Reflectance Method

Applied Sciences
Near-infrared radiation contributes to photoaging through oxidative stress and matrix metalloproteinase activation. Botanical extracts with antioxidant properties may offer additional protection beyond conventional UV filters.
Monika Michalak, Aneta Ostróżka-Cieślik, Magdalena Hartman-Petrycka, Anna Stolecka-Warzecha, Sławomir Wilczyński   +4 more
doaj   +1 more source

Development of a New BRDF-Resistant Vegetation Index for Improving the Estimation of Leaf Area Index

Remote Sensing, 2016
The leaf area index (LAI) is one of the most important Earth surface parameters used in the modeling of ecosystems and their interaction with climate. Numerous vegetation indices have been developed to estimate the LAI. However, because of the effects of
Su Zhang, Liangyun Liu, Xinjie Liu, Zefei Liu   +3 more
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Estimation of leaf area index from PROBA/CHRIS hyperspectral multi-angular data

, 2008
Leaf Area Index (LAI) is a key structural and functional biophysical variable of the vegetated surfaces which is important in quantifying evapotranspiration rates and the energy exchange of terrestrial vegetation.
Luckman, A., Kamalesh, V.L., Milton, E.J., Grey, W.M.F.   +3 more
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