Results 61 to 70 of about 3,925,714 (336)

Experimental study on effects of initial concentration on settling velocity characteristics of turbid surface of South China Sea coral mud

open access: yesYantu gongcheng xuebao, 2018
The coral mud is the calcareous ooze composed of fine-grained coral debris, which is distributed in the form of sandwich by particle sorting. During the formation process of an entire filling site, the sedimentary characteristics of the coral mud will ...
SHEN Yang 1, FENG Zhao-yan 1, LIU Han-long 2,1, WANG Qin-cheng 1, LI An 1
doaj   +1 more source

Chiral sedimentation of extended objects in viscous media [PDF]

open access: yes, 2009
We study theoretically the chirality of a generic rigid object's sedimentation in a fluid under gravity in the low Reynolds number regime. We represent the object as a collection of small Stokes spheres or stokeslets, and the gravitational force as a ...
G. Bantchev   +8 more
core   +3 more sources

Sedimentation stability and aging of aqueous dispersions of Laponite in the presence of cetyltrimethylammonium bromide. [PDF]

open access: yesPhysical review. E, Statistical, nonlinear, and soft matter physics, 2013
This work discusses the sedimentation stability and aging of aqueous suspensions of Laponite in the presence of cetyltrimethylammonium bromide (CTAB).
V. Savenko   +5 more
semanticscholar   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

open access: yesFEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel   +13 more
wiley   +1 more source

A new global gas hydrate budget based on numerical reaction-transport modeling and a novel parameterization of Holocene and Quaternary sedimentation [PDF]

open access: yes, 2011
This study provides new estimates for the global methane hydrate inventory based on reaction-transport modeling [1]. A multi-1D model for POC degradation, gas hydrate formation and dissolution is presented.
Burwicz, Ewa   +2 more
core  

Stability and Thermal Properties Study of Metal Chalcogenide-Based Nanofluids for Concentrating Solar Power [PDF]

open access: yes, 2019
Nanofluids are colloidal suspensions of nanomaterials in a fluid which exhibit enhanced thermophysical properties compared to conventional fluids. The addition of nanomaterials to a fluid can increase the thermal conductivity, isobaric-specific heat ...
Aguilar Sánchez, María Teresa   +7 more
core   +2 more sources

AAA+ protein unfoldases—the Moirai of the proteome

open access: yesFEBS Letters, EarlyView.
AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley   +1 more source

Stability of Cement Grout: Study of Sedimentation Phenomena

open access: yesApplied Rheology, 2002
The grouts are suspensions containing cement used in the technique of prestressing by post-tension. Cement, from its chemical nature, protects the wire ropes (strands) from corrosion.
Gelade Pierre   +3 more
doaj   +1 more source

Preparation, purification and characterization of aminopropyl-functionalized silica sol [PDF]

open access: yes, 2013
A new, simple and “green” method was developed for the surface modification of 20 nm diameter Stöber silica particles with 3-aminopropyl(diethoxy)methylsilane in ethanol. The bulk polycondensation of the reagent was inhibited and the stability of the sol
Attila Bóta   +47 more
core   +1 more source

Improving sedimentation stability of magnetorheological fluids using an organic molecular particle coating

open access: yesSmart materials and structures (Print), 2018
A key goal for implementation of magnetorheological fluids (MRFs) is to minimize sedimentation or to increase suspension stability. In this study, a series of MRF samples were synthesized by suspending carbonyl iron particles (CIPs), which had different ...
Haibin Cheng   +3 more
semanticscholar   +1 more source

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