Results 1 to 10 of about 279,452 (299)

Vibrational exciton nanoimaging of phases and domains in porphyrin nanocrystals. [PDF]

open access: yes, 2020
Much of the electronic transport, photophysical, or biological functions of molecular materials emerge from intermolecular interactions and associated nanoscale structure and morphology.
Bechtel, Hans A   +6 more
core   +1 more source

Anisotropic Assembly of Colloidal Nanoparticles: Exploiting Substrate Crystallinity [PDF]

open access: yes, 2007
We show that the crystal structure of a substrate can be exploited to drive the anisotropic assembly of colloidal nanoparticles. Pentanethiol-passivated Au particles of approximately 2 nm diameter deposited from toluene onto hydrogen-passivated Si(111 ...
Brust M.   +5 more
core   +2 more sources

The effect of switchable ionic liquid (SIL) treatment on the composition and crystallinity of birch chips (Betula pendula) using a novel alkanol amine-organic superbase-derived SIL

open access: yesGreen Processing and Synthesis, 2014
Two-step treatment of birch chips (Betula pendula) was tested using diethanolamine (DEA)-1,8-diazabicyclo-[5.4.0]-undec-7-ene (DBU)-CO2-switchable ionic liquid (SIL), resulting in a 23% weight reduction in 24 h. The weight of the chips was reduced to 32%
Anugwom Ikenna   +5 more
doaj   +1 more source

Experimental Study on Rejuvenation of Aged Power Cables via Simulation Operation

open access: yesEnergies
Thermal effects play a crucial role in the evolution of insulation performance in power cables during long-term operation. Before the experiments, crosslinked polyethylene (XLPE) sheets and cables were thermally aged at 105 °C for up to 180 days.
Yue Xie   +3 more
doaj   +1 more source

Potential of Pineapple Leaf Fibers and Their Modifications for Development of Tile Composites

open access: yesJournal of Natural Fibers, 2022
The research article focuses on succinct characterization of pineapple leaf fibers before and after different chemical modification techniques so as to ease its usage in developing light weight composite tiles for bathroom floor or wall tiles in building
Jyoti Jain, Shishir Sinha
doaj   +1 more source

Crystalline silicates as a probe of disk formation history

open access: yes, 2006
We present a new perspective on the crystallinity of dust in protoplanetary disks. The dominant crystallization by thermal annealing happens in the very early phases of disk formation and evolution. Both the disk properties and the level of crystallinity
C. P. Dullemond   +5 more
core   +1 more source

A novel enzymatic approach to nanocrystalline cellulose preparation [PDF]

open access: yes, 2018
In this work, conditions for an enzymatic pretreatment prior to NCC isolation from cotton linter were assessed. Different cellulase doses and reaction times were studied within an experimental design and NCC were obtained. At optimal enzymatic conditions
Beltramino, Facundo   +3 more
core   +2 more sources

A New Approach for Conversion of Eucalyptus Lignocellulosic Biomass into Cellulose Nanostructures: A Method that Can Be Applied in Industry

open access: yesJournal of Natural Fibers, 2021
This study aimed to explore the use of eucalyptus sawdust for the extraction of nanocellulose. This residue was purified with a three-steps pretreatment and ball milled for the isolation of nanocellulose.
Alana G. Souza   +5 more
doaj   +1 more source

Chemical weathering and provenance evolution of Holocene–Recent sediments from the Western Indus Shelf, Northern Arabian Sea inferred from physical and mineralogical properties [PDF]

open access: yes, 2012
We present a multi-proxy mineral record based on X-ray diffraction and diffuse reflectance spectrophotometry analysis for two cores from the western Indus Shelf in order to reconstruct changing weathering intensities, sediment transport, and provenance ...
Clift, Peter D.   +5 more
core   +2 more sources

Non-isothermal Crystallization Kinetics of Thermoplastic Composite for Automated Fiber Placement

open access: yesCailiao gongcheng, 2018
The non-isothermal crystallization kinetics of glass fiber reinforced polypropylene for automated fiber placement was studied by differential scanning calorimetry (DSC) and Avrami equation. To investigate the influence of cooling rate and cooling time on
SONG Qing-hua   +5 more
doaj   +1 more source

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