Results 21 to 30 of about 51,498 (253)

Effect of the solvent type and polymerization conditions on the curing kinetics, thermal and viscoelastic performance of poly(amide-imide) resins

open access: yeseXPRESS Polymer Letters, 2015
Isothermal and non-isothermal curing kinetics of both N-methyl-2-pyrrolidone (NMP) and N-methylimidazole (MI) based poly(amide-imide) (PAI) resins were investigated by DSC analysis using tightly closed high-pressure crucibles. Several exothermal peaks on
Z. Rasheva   +3 more
doaj   +1 more source

Preparation and enhanced electrorheological properties of elastomers filled with rod-shaped TiO2 particles

open access: yesFrontiers in Materials, 2023
The morphology of dispersed particles has been proven to have a significant impact on performance of electrorheological (ER) materials, while there is a lack of relevant research on its impact on the properties of electrorheological elastomers (EREs). In
Gang Ti   +5 more
doaj   +1 more source

Characterization and rheological behavior of vitamin E nanoemulsions prepared by phase inversion composition technique

open access: yesResults in Engineering, 2023
Many food, pharmaceutical, and cosmetic products are fabricated as nanoemulsions of vitamin E, a vital food micronutrient soluble in oil. Nanoemulsion production, maintenance, and application depend on physicochemical characteristics and rheology ...
Veda Prakash, Lipika Parida
doaj   +1 more source

Effects of Magnesia Incorporation on Properties of Polystyrene/Magnesia Composites

open access: yesActa Chimica Slovenica, 2018
In the present study, the effects of magnesia particles on thermal, dynamic mechanical, morphological, and surface properties of polystyrene resin are investigated.
Salah Eddine Hachani   +5 more
doaj   +1 more source

Enhancing the Stability of Invert Emulsion Drilling Fluid for Drilling in High-Pressure High-Temperature Conditions

open access: yesEnergies, 2018
Drilling in high-pressure high-temperature (HPHT) conditions is a challenging task. The drilling fluid should be designed to provide high density and stable rheological properties.
Salaheldin Elkatatny
doaj   +1 more source

GelMA‐based 3D spheroids recapitulate transcriptomic and functional hallmarks of myeloid sarcoma

open access: yesFEBS Open Bio, EarlyView.
GelMA 5% hydrogels support the formation of myeloid leukemia spheroids that recapitulate MS‐specific features, including G1 arrest, apoptosis, and ECM‐driven transcriptomic reprogramming. The 3D model mimicked soft‐tissue‐like stiffness and oxygen conditions, and transcriptomic convergence with primary MS samples confirmed its utility as a preclinical ...
Nicolas Germain   +11 more
wiley   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal   +2 more
wiley   +1 more source

Effect of nanoclay particles content on the mechanical properties of wood flour-polypropylene composites using dynamic mechanic thermal analysis [PDF]

open access: yesIranian Journal of Wood and Paper Industries, 2014
In this study, the effect of nanoclay particles content on the mechanical properties of wood flour-polypropylene composites was investigated using Dynamic Mechanic Thermal Analysis (DMTA).
Behzad Kord, M.Amin Ekrami, Mahdi Rohani
doaj  

Rafting of Ni‐Based Superalloys Under Multiaxial Load as Understood by Phase‐Field Simulations and Critical Experiments

open access: yesAdvanced Engineering Materials, EarlyView.
Phase‐field simulations coupled with dislocation‐density‐based crystal plasticity modeling reproduce γ′ rafting behavior in single‐crystal Ni‐based superalloys under varied loading conditions. The model captures both macroscopic creep and microscopic morphology evolution, with results matching high‐temperature creep experiments.
Micheal Younan   +5 more
wiley   +1 more source

A Study on Ratio of Loss to Storage Modulus for the Blood Clot

open access: yesInternational Journal of Engineering, 2014
In this study the rheology of blood clot is measured with the help of rotational rheometer. Several shear strain (0.5, 1 and 2%) are applied with two frequencies (5 and 10 Hz) from the incipient time of clot formation and the response of the sample is measured with the form of shear stress and the phase lag which is interpreted with storage and loss ...
S. Soleimani   +2 more
openaire   +2 more sources

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