Results 71 to 80 of about 262,803 (293)

Fatigue Crack Initiation and Growth in Nanocrystalline Ni at Multiple Length‐Scales

Advanced Engineering Materials, EarlyView.
Overview of miniaturized in situ SEM fatigue setup and resultant fatigue crack growth data for nanocrystalline Ni. The presented study focuses on the analysis of fatigue crack growth rate (FCGR) in focused ion beam‐notched microcantilevers prepared from nanocrystalline (NC) Ni as a model material.
Igor Moravcik, Alexander Jelinek, Markus Alfreider, Jutta Luksch, Anton Hohenwarter, Florian Schaefer, Christian Motz, Daniel Kiener   +7 more
wiley   +1 more source

NUMERICAL STUDY OF THE BUBBLE FORMATION MECHANISM IN HORIZONTAL LIQUID-GAS FLOW IN A T-JUNCTION MINICHANNEL

Rekayasa Mesin
The purpose of this research was to study the mechanism of air bubble formation at the T-Junction Minichannel. Numerical simulations were carried out using the Volume of Fluid (VOF) method on OpenFOAM v2112 with the Pressure Implicit with Splitting of ...
Gilang Destya Widodo, Untung Surya Dharma, Deendarlianto Deendarlianto   +2 more
doaj   +1 more source

Physical Modelling and Similitude of Air Bubble Entrainment at Vertical Circular Plunging Jets [PDF]

, 2004
When a plunging jet impinges into a pool of liquid, air bubble entrainment takes place if the inflow velocity exceeds a threshold velocity. This study investigates air entrainment and bubble dispersion in the developing flow region of vertical circular ...
A. Hoque, Bin, Bonetto, Brennen, Cummings, Cummings, Cummings, H. Chanson, Henderson, Hoyt, Hughes, Iino, Kennedy, Knapp, McKeogh, Robison, S. Aoki, Sene, Zhu   +18 more
core   +2 more sources

Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)

Advanced Engineering Materials, EarlyView.
Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho, M. Naeem, T. H. C. Costa, M. S. Libório, J. C. A. Queiroz, C. B. B. Luna, R. R. M. Sousa, P. S. Vieira, E. M. Araújo   +8 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

The Injection of Air/Oxygen Bubble into the Anterior Chamber of Rabbits as a Treatment for Hyphema in Patients with Sickle Cell Disease

Journal of Ophthalmology, 2014
Purpose. To investigate the changes of partial oxygen pressure (PaO2) in aqueous humour after injecting air or oxygen bubble into the anterior chamber in sickle cell hyphema. Methods.
Emre Ayintap, Uğurcan Keskin, Fariz Sadigov, Mesut Coskun, Nilufer İlhan, Sedat Motor, Hilal Semiz, Nihan Parlakfikirer   +7 more
doaj   +1 more source

Bubble biofilm: Bacterial colonization of air-air interface

Biofilm, 2020
Microbial mats or biofilms are known to colonize a wide range of substrates in aquatic environments. These dense benthic communities efficiently recycle nutrients and often exhibit high tolerance to environmental stressors, characteristics that enable them to inhabit harsh ecological niches.
Sjöberg, Susanne, Stairs, Courtney, Allard, Bert, Hallberg, Rolf, Homa, Felix, Martin, Tom, Ettema, Thijs J.G., Dupraz, Christophe   +7 more
openaire   +5 more sources

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

Advanced Functional Materials, EarlyView.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari, Gokul Bhaskaran, Krishan Kumar, Yun Suk Huh, Young‐Kyu Han   +4 more
wiley   +1 more source

Etude expérimentale des phénomènes de coalescence dans les systèmes bulles-gouttes Experimental Study of Coalescence Phenomena in Bubble-Drop Systems

Oil & Gas Science and Technology, 2006
A l'occasion d'une étude sur les séparations eau-hydrocarbures par flottation, nous avons été amenés à étudier expérimentalement les coalescences bulle-goutte, goutte-goutte et bulle-bulle dans le système triphasique eau-air-kérosène.
Roques H., Aurelle Y., Aoudjehane M., Siem N., Rabat J.   +4 more
doaj   +1 more source

Interaction of particles with a cavitation bubble near a solid wall

, 2018
Hard particle erosion and cavitation damage are two main wear problems that can affect the internal components of hydraulic machinery such as hydraulic turbines or pumps.
Jung, Sunghwan, Laín, Santiago, Rodriguez, Sara A., Teran, Leonel A.   +3 more
core   +1 more source