Results 11 to 20 of about 1,419,583 (301)

Thermal stability of soy-based polyurethanes

open access: yesPolímeros, 2005
New types of polyurethanes were prepared by reacting diisocyanates and formiated soy polyols with different OH functionalities. Thermal properties and degradation kinetics were investigated by TGA. All prepared PU's showed at least two-weight loss steps,
Luciane L. Monteavaro   +3 more
doaj   +1 more source

Thermal Stability of Amorphous Solid Dispersions

open access: yesMolecules, 2021
Amorphous solid dispersion drug delivery systems (ASD DDS) were proved to be efficient for the enhancement of solubility and bioavailability of poorly water-soluble drugs.
Dijana Jelić
doaj   +1 more source

Thermal Stability of Polyoxometalate Compound of Keggin K8[2-SiW11O39]∙nH2O Supported with SiO2 [PDF]

open access: yes, 2016
Synthesis through sol-gel method and characterization of polyoxometalate compound of K8[b2-SiW11O39]∙nH2O supported with SiO2 have been done. The functional groups of polyoxometalate compound  was characterized by FT-IR spectrophotometer for the ...
A, Y. S. (Yunita)   +1 more
core   +1 more source

Cosmic ray moderation of the thermal instability [PDF]

open access: yes, 2004
We apply the Hermite-Bieler theorem in the analysis of the effect of cosmic rays on the thermal stability of an initially uniform, static background. The cosmic rays were treated in a fluid approximation and the diffusion coefficient was assumed to be ...
A. Y. Wagner   +10 more
core   +2 more sources

Effect of Adhesive Spreading Rate on the Performance of Laminated Compressed Oil Palm Trunks

open access: yesBioResources, 2015
The large availability and cheap price of oil palm (Elaeis guineensis) trunk makes it an attractive raw material for value-added applications, but its low density and high carbohydrate content are highly undesirable.
Noor Afeefah Nordin   +6 more
doaj   +1 more source

Thermal stability of aliphatic hyperbranched polyesters [PDF]

open access: yesHemijska Industrija, 2002
The influence of the molar mass (generation), number and type of end groups on the thermal stability of aliphatic hyperbranched polyesters are presented in this study.
Vuković Jasna   +3 more
doaj   +1 more source

Critical cooling rate and thermal stability of Zr–Ti–Cu–Ni–Be alloys [PDF]

open access: yes, 2001
The critical cooling rate as well as the thermal stability are measured for a series of alloys in the Zr–Ti–Cu–Ni–Be system. Upon cooling from the molten state with different rates, alloys with compositions ranging along a tie line from (Zr70Ti30)55 ...
Johnson, William L.   +2 more
core   +1 more source

Thermal stability of DNA [PDF]

open access: yesNucleic Acids Research, 1998
Tij and Delta Hij for stacking of pair i upon j in DNA have been obtained over the range 0.034-0.114 M Na+from high-resolution melting curves of well-behaved synthetic tandemly repeating inserts in recombinant pN/MCS plasmids. Results are consistent with neighbor-pair thermodynamic additivity, where the stability constant, sij , for different domains ...
R D, Blake, S G, Delcourt
openaire   +2 more sources

Dielectrophoretic force-driven convection in annular geometry under Earth's gravity

open access: yes, 2020
Context: A radial temperature gradient together with an inhomogeneous radial electric field gradient is applied to a dielectric fluid confined in a vertical cylindrical annulus inducing thermal electro-hydrodynamic convection.
Baumann, Martin   +7 more
core   +1 more source

Improving lignocellulose thermal stability by chemical modification with boric acid for incorporating into polyamide

open access: yesMaterials & Design, 2020
The preparation of bio-composites based on engineering plastic is always restricted by the low thermal stability of lignocellulose. In this study, the thermal stability of lignocellulose was improved by boric acid modification.
Jingfa Zhang   +6 more
doaj   +1 more source

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