Results 1 to 10 of about 1,359,714 (335)

Relationship between intrinsic viscosity, thermal and retrogradation properties of amylose and amylopectin [PDF]

open access: yesCzech Journal of Food Sciences, 2014
The relationships between intrinsic viscosity and some properties of amylose and amylopectin were investigated. The intrinsic viscosities determined by Ubbelohde viscometer for rice, maize, wrinkled pea and potato amyloses were 46.28 ± 0.30, 123.94 ± 0 ...
Shifeng YU   +3 more
doaj   +4 more sources

A simple model for the anomalous intrinsic viscosity of dendrimers [PDF]

open access: yes, 2010
The intrinsic viscosity of dendrimers in solution shows several anomalous behaviors that have hitherto not been explained within the existing theoretical frameworks of either Zimm or Rouse.
An, Lijia   +4 more
core   +2 more sources

Demonstration of the rotational viscosity transfer across scales in Navier–Stokes turbulence [PDF]

open access: yesScientific Reports
Mechanical effects that span multiple physical scales—such as the influence of vanishing molecular viscosity on large-scale flow structures under specific conditions—play a critical role in real fluid systems.
Satori Tsuzuki
doaj   +2 more sources

Assessing the effect of moderately increasing medium viscosity on the intrinsic dissolution rate and diffusion coefficient of ibuprofen particles

open access: yesBritish Journal of Pharmacy, 2022
This study investigated the effects of moderately increasing medium viscosity through two viscosity enhancing agents (VEA) (HPMC and sucrose) on the intrinsic dissolution of a BCS class II drug (ibuprofen).
Marina Navas Bachiller   +3 more
doaj   +1 more source

Prediction of thickening efficiency of olefin copolymers and kinematic viscosities of the blended base oils by determining intrinsic viscosities of the copolymers in cyclohexane

open access: yesEgyptian Journal of Petroleum, 2022
The engine oil contains various performance additives along with polymer-based viscosity index improver, which are made from special types of flexible long chain polymers whose functionality is derived from their thickening efficiency, viscosity ...
M.S. Negi   +4 more
doaj   +1 more source

Intrinsic viscosity and friction coefficient of polymer molecules in solution: Porous sphere model [PDF]

open access: yes, 1978
The intrinsic viscosity [] and the translational friction coefficient f of polymer molecules in solution are calculated on the basis of the porous sphere model.
Mijnlieff, P.F., Wiegel, F.W.
core   +12 more sources

Comparison of the change in viscosity of a polyvinyl alcohol solution by adding Polyethylene glycol and Polyvinylpyrrolidone to solutions of Polyvinylalcohol [PDF]

open access: yesKirkuk Journal of Science, 2022
The aim of this research is to improve the flow properties of polymers, in particular viscosity, by mixing polymers to be use in various fields. Samples prepared by stirring polyvinyl alcohol on fire for half a second in a fixed weight ratio with ...
Najla Elgheryani
doaj   +1 more source

Molecular conformation and dilute solution properties of barley β-glucan: unveiling β-glucan as a highly flexible biopolymer under different processing conditions

open access: yesChemical and Biological Technologies in Agriculture, 2023
Background The functional properties of food fluids containing hydrocolloids are influenced by temperature, soluble salts, pH and the presence of sugars.
Abdollah Hematian Sourki   +1 more
doaj   +1 more source

Rheology of a Dilute Suspension of Aggregates in Shear-Thinning Fluids

open access: yesMicromachines, 2020
The prediction of the viscosity of suspensions is of fundamental importance in several fields. Most of the available studies have been focused on particles with simple shapes, for example, spheres or spheroids.
Marco Trofa, Gaetano D’Avino
doaj   +1 more source

Impact of convection on the damping of an oscillating droplet during viscosity measurement using the ISS-EML facility

open access: yesnpj Microgravity, 2021
Oscillating droplet experiments are conducted using the Electromagnetic Levitation (EML) facility under microgravity conditions. The droplet of molten metal is internally stirred concurrently with the pulse excitation initiating shape oscillations ...
Xiao Xiao   +4 more
doaj   +1 more source

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