Results 101 to 110 of about 47,155 (222)

Hyperspectral Unmixing Overview: Geometrical, Statistical, and Sparse Regression-Based Approaches [PDF]

, 2012
Imaging spectrometers measure electromagnetic energy scattered in their instantaneous field view in hundreds or thousands of spectral channels with higher spectral resolution than multispectral cameras.
Antonio Plaza, Jocelyn Chanussot, José M. Bioucas-dias, Mario Parente, Nicolas Dobigeon, Paul Gader, Qian Du, Senior Member, Senior Member   +8 more
core   +8 more sources

Virgin and recycled polypropylene composites reinforced with sisal by-product [PDF]

, 2011
Foram estudadas as propriedades térmicas e mecânicas de compósitos de polipropileno, virgem e reciclado, reforçados com 30% em massa de fibras residuais de sisal, assim como o perfil de processamento e a morfologia da matriz polimérica. Para tanto, foram
CASARIN, Suzan Aline, PACHEKOSKI, Wagner M., ROSÁRIO, Francisco, SANTOS, Sérgio F. dos, SAVASTANO JÚNIOR, Holmer, SILVEIRA, Ana P. J.   +5 more
core   +1 more source

Sisal cellulose acetates obtained from heterogeneous reactions

eXPRESS Polymer Letters, 2008
In the present work, cellulose obtained from sisal, which is a source of rapid growth, was used. Cellulose acetates were produced in heterogeneous medium, using acetic anhydride as esterifying agent and iodine as catalyst, to check if the procedure ...
doaj   +1 more source

Putting the Mess in Order: Aspergillus welwitschiae (and Not A. niger) Is the Etiological Agent of Sisal Bole Rot Disease in Brazil

Frontiers in Microbiology, 2018
Approximately 75% of the worldwide production of hard natural fibers originates from sisal, an industrial crop from arid and semiarid tropical regions. Brazil is the world's largest producer of sisal fiber, accounting for more than 40% of the worldwide ...
Elizabeth A. A. Duarte, Caroline L. Damasceno, Thiago A. S. de Oliveira, Leonardo de Oliveira Barbosa, Fabiano M. Martins, Jurema Rosa de Queiroz Silva, Thais E. F. de Lima, Rafael M. da Silva, Rodrigo B. Kato, Dener E. Bortolini, Vasco Azevedo, Aristóteles Góes-Neto, Ana C. F. Soares   +12 more
doaj   +1 more source

Producer income instability and farmers' risk response: The case of major Kenyan export crops [PDF]

The instability of export earnings in LDCs and its presumably harmful economic effects have been broadly discussed in the economic literature and among policy makers in international meetings.
Junginger-Dittel, Klaus-Otto, Mayer, Thomas   +1 more
core  

Mechanical testing of natural fibre reinforced polyester resin composites and Mode 1 fracture toughness testing of resin blocks [PDF]

, 2008
Recent European Parliament directive requires companies to achieve materials recycling greater than 80% in particular in the automotive sector [1]. The research on natural fibre based composite materials fits well into this ecological image.
Banks, William M., David-West, Opukuro S., Pethrick, Richard A., Symington, Mark C., Thomason, J.L.   +4 more
core  

Multilayer Structured NMF for Spectral Unmixing of Hyperspectral Images

, 2015
One of the challenges in hyperspectral data analysis is the presence of mixed pixels. Mixed pixels are the result of low spatial resolution of hyperspectral sensors. Spectral unmixing methods decompose a mixed pixel into a set of endmembers and abundance
Ghassemian, Hassan, Rajabi, Roozbeh
core   +1 more source

Investigation into mechanical, absorption and swelling behaviour of hemp/sisal fibre reinforced bioepoxy hybrid composites: Effects of stacking sequences.

International Journal of Biological Macromolecules, 2019
This work focuses on the fabrication of hybrid bio-composites using green epoxy as the matrix material, hemp (H) and sisal (S) fibre mats as the reinforcements.
T. S. M. Kumar, K. Senthilkumar, M. Chandrasekar, Jiratti Tengsuthiwat, N. Rajini, S. Siengchin, S. Ismail   +6 more
semanticscholar   +1 more source

Influence of granite micro particles on the mechanical, damping and antimicrobial properties of silk–sisal hybrid composites

Scientific Reports
This paper focuses on the effect of granite-micro-filler on static mechanical properties, damping behavior, and physical characteristics of silk-sisal hybrid composite.
K. Sripriyan, M. Karthigha
doaj   +1 more source

Modeling and Optimization of Sisal Fiber Degradation Treatment by Calcined Bentonite for Cement Composite Materials

Journal of Natural Fibers
The treatment of sisal fiber by pozzolanic materials like kaolin and silica-fume has been explored; however, no study has modeled and optimized the effect of sisal fiber degradation treatment using calcined bentonite.
Tsion Amsalu Fode, Yusufu Abeid Chande Jande, Thomas Kivevele   +2 more
doaj   +1 more source