Results 21 to 30 of about 170,632 (255)

In situ suspension polymerization of vinyl chloride/3-(trimethoxysilyl) propyl methacrylate (MPTMS) intercalated Mg-Al-layered double hydroxide: II. Morphological, thermal properties and diffusion behavior

open access: yesPolymers and Polymer Composites, 2023
A series of PVC composites were produced using an in-situ suspension polymerization method with an optimal amount of 5 wt% of MgAl(NO 3 ) layered double hydroxide (LDH) or LDH-MPTMS, which is MPTMS-intercalated Mg-Al LDH.
Reza Mohammadi Berenjegani   +2 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.
Umeda, Naoya, Yamakoshi, Yasuyuki
openaire   +2 more sources

Influence of Mucosal Tissue Thickness on Peri-Implant Bone Stability : Retrospective Radiological Study [PDF]

open access: yes, 2023
Gradual bone loss around the implants is an ongoing concern. Mucosal tissue thickness is considered as a contributing factor that influences bone remodelling after implantation.
Neimane, Laura   +5 more
core   +1 more source

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

Biodegradable chitosan membranes incorporating Jatropha mollissima for the treatment of varicose ulcers [PDF]

open access: yesQuímica Nova
Varicose ulcers represent a severe manifestation of chronic venous insufficiency and remain a major public health challenge. In this study, chitosan-based dressings incorporating Jatropha mollissima extract (1-5% m/m) were developed via lyophilization to
Antônio R. V. Ribeiro Filho   +9 more
doaj   +2 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

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

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

KGmax curves associated with second generation intact stability criteria for different types of ships [PDF]

open access: yes, 2016
Currently, second generation intact stability criteria are being developed and evaluated by the International Maritime Organization (IMO). In this paper, we briefly present levels 1 and 2 assessment methods for the criteria of pure loss of stability and ...
LAURENS, Jean-Marc   +2 more
core   +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

Home - About - Disclaimer - Privacy