Results 161 to 170 of about 3,015 (212)
Chemically Programmable Underwater Sound‐Absorbing Metamaterial via MXene Self‐Assembly
Advanced Science, EarlyView.MXene self‐assembly creates a chemically programmable underwater metamaterial with quasi‐periodic layers and a chemical‐physical multi‐level constraint system. A crosslinker as a ‘chemical scissor’ precisely edits microscopic interactions, exciting deep‐subwavelength strong local resonances that induce near‐zero/negative effective bulk modulus (Keff ...
Ziwen Gan +5 more
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Advanced Science, EarlyView.A trace amount of boron is introduced into NbTaTi1.5V RHEA, forming a finegrained BCC+TiO+TiB microstructure. The TiB phase generates numerous dislocations, strengthening the alloy. The alloy exhibits 3610 MPa compressive fracture strength and 1060 HV microhardness, while retaining 14.8% fracture strain.
Da Wu +9 more
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Advanced Science, EarlyView.A supramolecular chirality evolution strategy in chiral low‐bandgap fused‐ring conjugated molecules enables high‐performance near‐infrared (NIR) circularly polarized light photodetection. Halogen substitution and thermal annealing induce chiral amplification and hierarchical ordering. Integrated into Schottky barrier vertical transistors, the optimized
Jaeyong Ahn +6 more
wiley +1 more source
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Slip Factor and Slip Velocity on a Permeable Bed
Journal of Coastal Research, 2012Abstract CHEN, Y.-Y.; CHEN, G.-Y., and LIN, C.-H. 2012. The slip factor and slip velocity on a permeable bed. In the present study, a new, simple method for determining the slip velocity (also called the bed velocity) at the solid-fluid interface in the wave boundary layer is proposed. Based on experimental and numerical results, when waves travel over
Yang‐Yih Chen
exaly +2 more sources
Experiential investigation of cluster velocity and slip velocity in the CFB riser
Powder Technology, 2020Abstract Cluster velocity and slip velocity are the important features of cluster hydrodynamics and the statistical analysis was carried out based on the moving direct of the clusters in this work. Lagrange approach was employed to compute the velocity of the clusters which were captured by a high speed camera in a thin 2D fluidized bed.
Wei Sheng
exaly +2 more sources
Advanced Powder Technology, 2011
Abstract The increasing applications of liquid–solid circulating fluidized bed in chemical/biochemical industries require a better understanding of hydrodynamics of such system. This work aims to experimentally investigate the slip between the phases in a LSCFB.
Natarajan Palani, Velraj Ramalingam
exaly +2 more sources
Abstract The increasing applications of liquid–solid circulating fluidized bed in chemical/biochemical industries require a better understanding of hydrodynamics of such system. This work aims to experimentally investigate the slip between the phases in a LSCFB.
Natarajan Palani, Velraj Ramalingam
exaly +2 more sources
Journal of Fluid Mechanics, 2002
The lift force on a circular particle in plane Poiseuille flow perpendicular to gravity is studied by direct numerical simulation. The angular slip velocity Ωs=Ωp+½γ˙, where −½γ˙ is the angular velocity of the fluid at a point where the shear rate is γ˙ and Ωp is the angular velocity of the particle, is always positive at an equilibrium position at
Joseph, D. D., Ocando, D.
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The lift force on a circular particle in plane Poiseuille flow perpendicular to gravity is studied by direct numerical simulation. The angular slip velocity Ωs=Ωp+½γ˙, where −½γ˙ is the angular velocity of the fluid at a point where the shear rate is γ˙ and Ωp is the angular velocity of the particle, is always positive at an equilibrium position at
Joseph, D. D., Ocando, D.
openaire +1 more source
Retinal slip velocities in congenital nystagmus
Vision Research, 1989An analysis of waveform velocities was performed on 16 individuals with congenital nystagmus. The fast phases were shown to be saccadic in nature and their main sequence peak velocity was significantly slower than that of the normal control group (P less than 0.01).
R V, Abadi, R, Worfolk
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Extension of the Helmholtz-Smoluchowski velocity to the hydrophobic microchannels with velocity slip
Lab Chip, 2009Electrokinetic flows through hydrophobic microchannels experience velocity slip at the microchannel wall, which affects volumetric flow rate and solute retention time. The usual method of predicting the volumetric flow rate and velocity profile for hydrophobic microchannels is to solve the Navier-Stokes equation and the Poisson-Boltzmann equation for ...
H M, Park, T W, Kim
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Local slip velocity in a downer
China Particuology, 2003Abstract Based on the EMMS model, the local slip velocity between gas and solid is systematically analyzed and a theoretical correlation of local slip velocity with local voidage for a downer is derived as follows: u s ( r ) u t = D 8 / 7 ( 1 - ɛ mf ) - 2 / 7 [ 1 - ɛ ( r ) ɛ (
Songgeng Li, Weigang Lin, Jianzhong Yao
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