Results 21 to 30 of about 865,036 (193)

Thermal Degradation Studies and Machine Learning Modelling of Nano-Enhanced Sugar Alcohol-Based Phase Change Materials for Medium Temperature Applications

open access: yesEnergies, 2023
Thermogravimetric analysis (TGA) was utilised to compare the thermal stability of pure phase change material (D-mannitol) to that of nano-enhanced PCM (NEPCM) (i.e., PCM containing 0.5% and 1% multiwalled carbon nanotubes (MWCNT)).
Ravi Kumar Kottala   +6 more
doaj   +1 more source

Cross-layer optimization in TCP/IP networks [PDF]

open access: yes, 2005
TCP-AQM can be interpreted as distributed primal-dual algorithms to maximize aggregate utility over source rates. We show that an equilibrium of TCP/IP, if exists, maximizes aggregate utility over both source rates and routes, provided congestion prices ...
Doyle, John C.   +3 more
core   +3 more sources

Synthesis and Use of Amphoteric Carboxymethylcellulose Graft Copolymers in the Environmentally-acceptable Water-based DrillingFluids as a Water-sensitive Shale Stabilizer [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2009
Water soluble amphoteric graft copolymers of polysaccharide were synthesized via grafting of cationic monomer onto the sodium carboxymethylcellulose ()CMC)( and then used as a shale stabilizer in the water-based drilling fluids.
M. Abdollahi   +3 more
doaj   +1 more source

Synthesis and characterization of hybrid organic-inorganic materials based on sulphonated polyamideimide and silica [PDF]

open access: yes, 2010
The preparation of hybrid organic–inorganic membrane materials based on a sulphonated polyamideimide resin and silica filler has been studied. The method allows the sol–gel process to proceed in the presence of a high molecular weight polyamideimide,
Anita Hill   +26 more
core   +1 more source

Microstructure and dielectric properties of high-entropy Sr0.9La0.1MeO3 (Me: Zr, Sn, Ti, Hf, Mn, Nb) perovskite ceramics

open access: yesJournal of Materials Research and Technology, 2022
Entropy engineering has attracted extensive attention, which is applied to induce controllable changes in structures through lattice distortion effects to optimize certain properties. In this work, a series of pure phase high-entropy dielectric ceramics,
Zhihao Lou   +7 more
doaj   +1 more source

Influence of heating rate and atmospheric conditions on the thermal response of CFRP and its constituents

open access: yesResults in Materials, 2023
The thermal stability of carbon fibre-reinforced polymer (CFRP) and its constituents (neat epoxy resin and carbon fibre) are studied in terms of mass loss using a thermogravimetry technique at different heating rates and two atmospheric conditions (air ...
Tim J. Aspinall   +3 more
doaj   +1 more source

Polymer/montmorillonite nanocomposites with improved thermal properties: Part II. Thermal stability of montmorillonite nanocomposites based on different polymeric matrixes. [PDF]

open access: yes, 2007
In previous part of this work factors influencing the thermal stability of polymer nanocomposite materials were indicated, such as chemical constitution of organic modifier, filler content, nanocomposites’ structure and the processing- dependent ...
Banerjee, J. R.   +3 more
core   +1 more source

Dielectric Studies on Fe3O4 Nanodoped p-n-Alkyloxybenzoic Acids

open access: yesAdvances in Condensed Matter Physics, 2014
The stability of phase transition temperatures and textural changes for thermotropic pure and nanodoped p-n-alkyloxybenzoic acid mesogens were aimed to study at considerable time periods.
S. Sreehari Sastry   +5 more
doaj   +1 more source

Assessment for Probability of Ship Capsizing due to Pure Loss of Stability in Quartering Seas

open access: yesJournal of the Society of Naval Architects of Japan, 1991
This study presents a theoretical method for calculating probabilities of capsising due to pure loss of stability, for a ship running in short crested waves and fluctuating wind. The aim was to develop stability criteria of a ship in quartering seas making use of the risk analysis.
Naoya Umeda, Yasuyuki Yamakoshi
openaire   +2 more sources

Macroscopic quantum many-body tunneling of attractive Bose-Einstein condensate in anharmonic trap

open access: yes, 2013
We study the stability of attractive atomic Bose-Einstein condensate and the macroscopic quantum many-body tunneling (MQT) in the anharmonic trap. We utilize correlated two-body basis function which keeps all possible two-body correlations.
Chakrabarti, Barnali   +2 more
core   +1 more source

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