Results 71 to 80 of about 275,515 (305)

Method for Detecting Underwater Microbubbles Using Dual-Mode Fusion of Laser Polarization

open access: yesApplied Sciences
Bubble detection in water plays important roles in human exploration and management of the ocean. This research presents a detection technique based on laser polarization dual-mode fusion, aiming at solving the difficulties of light scattering intensity ...
Siguang Zong   +2 more
doaj   +1 more source

Numerical Study of the Steady-State Subchannel Test-Case with NEPTUNE_CFD for the OECD/NRC NUPEC PSBT Benchmark

open access: yesScience and Technology of Nuclear Installations, 2012
The multifield computational fluid dynamics (CFD) code NEPTUNE_CFD is applied to carry out a numerical study of the steady-state subchannel test-case of the OECD/NRC NUPEC PWR subchannel and bundle tests (PSBTs) international benchmark, focusing on the ...
C. Baudry   +5 more
doaj   +1 more source

Persistent topology of the reionisation bubble network. I: Formalism & Phenomenology [PDF]

open access: yes, 2018
We present a new formalism for studying the topology of HII regions during the Epoch of Reionisation, based on persistent homology theory. With persistent homology, it is possible to follow the evolution of topological features over time.
Elbers, Willem, van de Weygaert, Rien
core   +2 more sources

On‐Demand Activation of Thin Alginate Shell Encapsulated Volatile Liquid for Untethered Pneumatic Soft Actuation

open access: yesAdvanced Engineering Materials, EarlyView.
Phase‐changing liquids enable untethered pneumatic actuation in soft robotics but suffer from volatility and storage challenges. This work reports a simple method to encapsulate Novec 7000 within micron‐thin alginate shells via in situ injection and ionic crosslinking.
Rayan A. M. Basodan   +3 more
wiley   +1 more source

Hydrodynamic characteristics of the microbubble dissolution in water using an ejector-type bubble generator

open access: yesCase Studies in Chemical and Environmental Engineering
This research uses an ejector bubble generator to determine water's flow structure and dissolved oxygen. The horizontal position of ejector, modified from conventional venturi, utilizes a gradual reduction in cross-section at the water inlet and contains
I.G.N.B. Catrawedarma   +3 more
doaj   +1 more source

Characterization of periodic cavitation in an optical tweezer

open access: yes, 2016
Microscopic vapor explosions or cavitation bubbles can be generated periodically in an optical tweezer with a microparticle that partially absorbs at the trapping laser wavelength.
Alba-Arroyo, José E.   +2 more
core   +1 more source

A combined three-dimensional in vitro-in silico approach to modelling bubble dynamics in decompression sickness [PDF]

open access: yes, 2017
The growth of bubbles within the body is widely believed to be the cause of decompression sickness (DCS). Dive computer algorithms that aim to prevent DCS by mathematically modelling bubble dynamics and tissue gas kinetics are challenging to validate ...
Cheema, U   +3 more
core   +2 more sources

Dynamic Testing of Cold Gas Sprayed Bipolar Plates–Porous Transport Layer Coating System in Proton Exchange Membrane Water Electrolysis

open access: yesAdvanced Engineering Materials, EarlyView.
Through direct application of porous transport layer (PTL) on the bipolar plate (BPP) with thermal spraying, the interfacial contact resistance is improved. With the cold gas sprayed BPP–PTL coating system, a proton exchange membrane water electrolysis cell with a cell voltage of Ucell = 1.9 V can be operated up to i = 2.5 A/cm2 in a dynamic mode ...
Kirsten Bobzin   +5 more
wiley   +1 more source

Experimental and numerical study of bubbly flow and bubble size distribution produced by swirling flow bubble generator

open access: yesResults in Engineering
This study used experiments and numerical simulations to investigate the two-phase flow characteristics and microbubble size distribution in a swirling flow bubble generator.
Hilman Syaeful Alam   +5 more
doaj   +1 more source

Probing the Shape of a Graphene Nanobubble

open access: yes, 2017
Gas molecules trapped between graphene and various substrates in the form of bubbles are observed experimentally. The study of these bubbles is useful in determining the elastic and mechanical properties of graphene, adhesion energy between graphene and ...
Barkema, Gerard T.   +2 more
core   +1 more source

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