Results 81 to 90 of about 59,892 (311)

The reionizing bubble size distribution around galaxies

Monthly Notices of the Royal Astronomical Society
ABSTRACT Lyman-alpha (Ly α) emission from galaxies is currently our most promising probe for constraining when and how reionization began, and thus when the first galaxies formed. At z > 7, the majority of galaxies detected with Ly α are in candidate overdensities.
Ting-Yi Lu, Charlotte A Mason, Anne Hutter, Andrei Mesinger, Yuxiang Qin, Daniel P Stark, Ryan Endsley   +6 more
openaire   +3 more sources

Enhancing Bubble Removal in Geometry‐Optimized Electrodes

Advanced Engineering Materials, EarlyView.
3D‐printed lattice electrodes outperform stochastic foams in alkaline water electrolysis despite 20%–25% lower surface area. Straight flow channels generate Venturi‐like bubble entrainment, suppressing gas accumulation that renders foam interiors electrochemically inactive.
Florian Wiesner, Peter Förster, Alexander Limper, Anselm Brodersen, Matthias Wessling, John Linkhorst   +5 more
wiley   +1 more source

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

Applied 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, Shaopeng Yang, Shanyong Liang   +2 more
doaj   +1 more source

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

Advanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran, Vincent Nebel, Dominik Perius, Kshitij Kumar, Yannis Heim, Laura Bies, Tobias Kraus   +6 more
wiley   +1 more source

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

Case 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, Sefri Ton, Dadang Dwi Pranowo, Fredy Surahmanto   +3 more
doaj   +1 more source

Feasibility of Nitrogen as a Carrier Gas for Inconel Cold Spray in Hydropower Application

Advanced Engineering Materials, EarlyView.
N2, despite being nearly two orders of magnitude cheaper than He, is a feasible carrier gas for cold spray Inconel coatings in hydropower repair applications when higher gas temperature and pressure are used. Reducing powder size significantly improved cavitation resistance, while the addition of fine chromium carbide particles further enhanced erosion
Tianhao Wang, Mayur Pole, Tingkun Liu, Kenneth A. Ross, Christopher B. Smith   +4 more
wiley   +1 more source

Mass transfer in bubble column for industrial conditions—effects of organic medium, gas and liquid flowrates and column design [PDF]

, 2005
Most of available gas–liquid mass transfer data in bubble column have been obtained in aqueous media and in liquid batch conditions, contrary to industrial chemical reactor conditions.
Billet, Anne-Marie, Augier, Frédéric, Chaumat, Hélène, Mathieu, Charles, Delmas, Henri   +4 more
core   +1 more source

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

Results 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, Muhammad Imam Arif, Tubagus Ahmad Fauzi Soelaiman, Priyono Sutikno, Anto Tri Sugiarto, Asep Yusuf   +5 more
doaj   +1 more source

Liquid Phase Transmission Electron Microscopy: A Window into the Early Stages of Complex Material Formation

Advanced Functional Materials, EarlyView.
Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum, Vinavadini Ramnarain, Nathaly Ortiz Peña, Dris Ihiawakrim, Clément Sanchez, Ovidiu Ersen   +5 more
wiley   +1 more source

Considerations on bubble fragmentation models

, 2010
n this paper we describe the restrictions that the probability density function (p.d.f.) of the size of particles resulting from the rupture of a drop or bubble must satisfy.
J. RODRÍGUEZ-RODRÍGUEZ, C. MARTÍNEZ-BAZÁN, Montañés García, José Luis, Rodríguez Rodríguez, Javier, J. L. MONTAÑES, J. C. LASHERAS, Deane, G. B., Martínez Bazán, Carlos, G. B. DEANE   +8 more
core   +1 more source