Results 1 to 10 of about 194,145 (150)

Porosity of autoclave aerated concrete and foam concrete: origin of porosity and pore size

open access: yesMagazine of Civil Engineering, 2021
Porosity in the hardening system consists of air cells, which are the main element of the cellular concrete structure and that formed when gas emission in the mixture or during the foaming.
Kurochkina Karina   +2 more
doaj   +1 more source

Regime Switching Mechanism during Energy Futures' Price Bubbles

open access: yesInternational Journal of Energy Economics and Policy, 2022
In the last twenty years, many huge ups and downs have been seen in not only oil prices but also in other spot and derivative' energy prices too. This study has two main purposes. The main purpose of the study is to detect bubbles and their beginning and
Ayben Koy
doaj   +1 more source

Engineering electrode wettability to enhance mass transfer in hydrogen evolution reaction

open access: yesNano Research Energy, 2023
In hydrogen evolution reaction, inefficient mass transfer caused by bubble adhesion on electrode, bubble dispersion in electrolyte and slow H2 diffusion, has greatly impeded the reaction process.
Chunhui Zhang   +5 more
doaj   +1 more source

Budding pouches and associated bubbles: 3D visualization of exo-membrane structures in plasmodium falciparum gametocytes

open access: yesFrontiers in Cellular and Infection Microbiology, 2022
Plasmodium falciparum gametocytes have unique morphology, metabolism, and protein expression profiles in their asexual stages of development. In addition to the striking changes in their appearance, a wide variety of “exo-membrane structures” are newly ...
Eri Saki H. Hayakawa   +7 more
doaj   +1 more source

DETECTING ASSET PRICE BUBBLES DURING THE COVID-19 CRISIS AND ITS IMPLICATIONS: EVIDENCE FROM THE STOCK AND OIL MARKET

open access: yesThe International Journal of Banking and Finance, 2022
This study investigates whether the COVID-19 pandemic has caused asset price bubbles in the stock and oil markets in the United States and Malaysia. More specifically, the study seeks to detect the onset and end of possible speculative bubbles and their
Mukhriz Izraf Azman Aziz   +2 more
doaj   +1 more source

The Maximal Wrinkle Angle During the Bubble Collapse and Its Application to the Bubble Electrospinning

open access: yesFrontiers in Materials, 2022
Polymer bubbles are ubiquitously used for the fabrication of nanofibers by the bubble electrospinning. When a bubble is broken, the fragments tend to be wrinkled.
Ji-Huan He   +3 more
doaj   +1 more source

Evaluation of ANN and ANFIS Methods in Study of the Motion of a Bubble in A Combined Couette-Poiseuille Flow [PDF]

open access: yesInternational Journal of Advanced Design and Manufacturing Technology, 2021
The equilibrium position of a deformable bubble in a combined Couette-Poiseuille flow is investigated numerically by solving the full Navier-Stokes equations using a finite-difference/front-tracking method. The present approach is examined to predict the
Morteza Bayareh, Amireh Nourbakhsh
doaj   +1 more source

Flow field characterization between vertical plate electrodes in a bench-scale cell of electrochemical water softening

open access: yesWater Science and Technology, 2022
To analyze the effect of flow characteristics on electrochemical water softening, characteristics of flow fields in the vicinity of vertical plate electrodes in a bench-scale electrolysis cell for electrochemical water softening were visualized using ...
Qi Chen   +5 more
doaj   +1 more source

Mathematical Modelling of the Initial Mold Filling with Utilization of an Angled Runner

open access: yesMetals, 2019
The flow pattern plays a crucial role in the uphill teeming process. The non-metallic inclusion generation due to interaction with the mold flux is believed to be influenced by the flow pattern.
Jun Yin   +3 more
doaj   +1 more source

Gompertz Law in Clean Foam Coalescence

open access: yesFrontiers in Physics, 2021
Clean foams tend to age with time through sequential coalescence events. This study evaluates aging dynamics in clean foams by measuring bubble populations from coalescence simulation experiments and adopting biological population dynamics analysis.
Gun Oh   +3 more
doaj   +1 more source

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