Results 31 to 40 of about 2,912,431 (304)

Contact angle of copper-bearing shales using the sessile drop and captive bubble methods in the presence of selected frothers [PDF]

open access: yes, 2015
This paper describes the measurement of contact angle of copper-bearing shales. The values of advancing and receding contact angles were determined using the sessile drop and captive bubble methods in the presence of aqueous solutions of acetal and ...
Szczepański, W.   +3 more
core   +1 more source

Experimental investigation on the effect of accelerating motion of contact line on the dynamic contact angle

open access: yesNihon Kikai Gakkai ronbunshu, 2014
The dynamic contact angle, the angle between the surfaces of the liquid and the solid at a moving contact line, is one of the primary conditions for the dynamics of the liquid surface confined by solid wall.
Takahiro ITO   +6 more
doaj   +1 more source

Determination of contact angle hysteresis of water microdroplets evaporating on hydrolyzed PET foils [PDF]

open access: yesActa Montanistica Slovaca, 2013
Moderately hydrophobic surfaces of PET foils were gradually hydrophilized by their immersion in NaOH solutions of increasing concentration. Then, the contact angle and geometric factors of microliter water drops, deposited on these polymer surfaces, were
Martin Nagy , Jiří Škvarla
doaj  

Effect of contact angle and helix angle on slide-roll ratio under the uniform motion state of BSM

open access: yesMATEC Web of Conferences, 2017
To study the effect of contact and helix angles on slide-roll ratio at the ball contact point under the uniform motion state of ball screw mechanism (BSM), a slide- roll ratio model was derived in the literature [9] were used in this paper.
Deshun Kong, Min Wang, Xiangsheng Gao
doaj   +1 more source

Research on the elastic–plastic external contact mechanical properties of cylinder

open access: yesScience Progress, 2020
Based on Hertz contact theory, an elastic-plastic contact mechanics model of outer cylinder under different contact angles of axis is proposed. The relationship among contact angle, load and contact deformation, contact stiffness and contact area is ...
TieNeng Guo   +3 more
doaj   +1 more source

Characterization of ultrahydrophobic hierarchical surfaces fabricated using a single-step fabrication methodology [PDF]

open access: yes, 2011
Hydrophobic surfaces with microscale roughness can be rendered ultrahydrophobic by the addition of sub-micron-scale roughness. A simple yet highly effective concept of fabricating hierarchical structured surfaces using a single-step deep reactive ion ...
S V Garimella   +5 more
core   +1 more source

Numerical investigation on lamella behaviors in droplet impingement on surface: influence of surface wettability

open access: yesJournal of Fluid Science and Technology
The effect of wettability on lamella behavior during droplet impingement on flat surfaces is investigated by detailed numerical simulations with different contact angle parameter sets.
Tianyi WEI   +3 more
doaj   +1 more source

Conserved binding mode but diverse interfaces of MreC‐PBP2 interactions

open access: yesFEBS Letters, EarlyView.
The crystal structure of abMreC reveals a conserved two β‐barrel architecture and provides structural insights into its role within the bacterial elongasome. The abMreC–abPBP2 complex model identifies the molecular basis of MreC‐mediated PBP2 recognition, contributing to the regulation of peptidoglycan synthesis.
Hyunseok Jang   +4 more
wiley   +1 more source

Structural and biochemical analysis of a B12 superbinder

open access: yesFEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices   +3 more
wiley   +1 more source

Smaller is better: nanobodies meet NMR

open access: yesFEBS Letters, EarlyView.
Nanobodies are single‐domain antigen‐binding fragments derived from camelid heavy chain antibodies. Their small size, high stability, and exceptional specificity make nanobodies uniquely useful probes for NMR studies of protein dynamics, transient conformational states, and protein–protein interactions.
Oleg Y. Dmitriev
wiley   +1 more source

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