Results 31 to 40 of about 95,178 (259)

Active nematic multipoles: Flow responses and the dynamics of defects and colloids

open access: yesFrontiers in Physics, 2023
We introduce a general description of localised distortions in active nematics using the framework of active nematic multipoles. We give the Stokesian flows for arbitrary multipoles in terms of differentiation of a fundamental flow response and describe ...
Alexander J. H. Houston   +3 more
doaj   +1 more source

Phase behaviour of colloidal superballs mixed with non-adsorbing polymers [PDF]

open access: yes, 2018
.: Inspired by experimental work on colloidal cuboid-polymer dispersions (Rossi et al., Soft Matter, 7, 4139 (2011)) we have theoretically studied the phase behaviour of such mixtures.
Physical and Colloid Chemistry   +4 more
core   +3 more sources

COLLOID RELEASE AND TRANSPORT IN AGRICULTURAL SOIL AS IMPACTED BY SOLUTION CHEMISTRY

open access: yesJournal of Urban and Environmental Engineering, 2011
Colloid release from the agricultural soil under unsaturated conditions was controlled by the hydrodynamic force, capillary force and electrostatic force that were determined by the solution chemistry in terms of solution ionic strength and pH.
Sandip Patil, Kamal Tawfiq, Gang Chen
doaj   +2 more sources

Lyotropic Liquid Crystals from Colloidal Suspensions of Graphene Oxide

open access: yesCrystals, 2019
Lyotropic liquid crystals from colloidal particles have been known for more than a century, but have attracted a revived interest over the last few years.
Adam P. Draude, Ingo Dierking
doaj   +1 more source

Investigation of co-migration of heavy metal with colloid under preferential flow

open access: yesYantu gongcheng xuebao, 2020
Most of the heavy metal pollutants in soil come from external industrial and agricultural activities. Surface soil layer is the only access through which the heavy metal can migrate downward.
ZHANG Wen-jie 1, LI Jun-tao 2
doaj   +1 more source

Equilibrium and non-equilibrium cluster phases in colloids with competing interactions [PDF]

open access: yes, 2014
The phase behavior of colloids that interact via competing interactions-short-range attraction and long-range repulsion-is studied by computer simulation.
Bolhuis, Peter G.   +6 more
core   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

open access: yesFEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav   +2 more
wiley   +1 more source

Temperature and Concentration Dependence of Human Whole Blood and Protein Drying Droplets

open access: yesBiomolecules, 2021
The drying of bio-colloidal droplets can be used in many medical and forensic applications. The whole human blood is the most complex bio-colloid system, whereas bovine serum albumin (BSA) is the simplest. This paper focuses on the drying characteristics
Anusuya Pal   +2 more
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

open access: yesFEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge   +6 more
wiley   +1 more source

Pore-scale study of flow rate on colloid attachment and remobilization in a saturated micromodel [PDF]

open access: yes, 2015
Colloid attachment is an important retention mechanism. It is influenced by colloid size, pore size, and flow rate, among other factors. In this work, we studied colloid attachment experimentally under various flow rates, as well as colloid release in ...
Zhang, Qiulan   +2 more
core   +3 more sources

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