Results 11 to 20 of about 125,813 (262)

Heat transport regimes in structured reactors: CFD analysis and influence of reactor diameter and length

open access: yesResults in Engineering
Temperature control in catalytic reactors is critical to ensure high yields and a stable process for highly exothermic reactions. To better understand the processes within structured reactors, it has already been shown that heat source based ...
Kevin Kuhlmann   +4 more
doaj   +2 more sources

MgB2 Josephson junctions produced by focused helium ion beam irradiation [PDF]

open access: yesAIP Advances, 2018
Planar magnesium diboride Josephson junctions are fabricated using focused helium ion beam irradiation. A single track of ion irradiation with a 30 kV He+ beam with nominal beam diameter < 0.5 nm is used to create a normal-metal barrier on a MgB2 film ...
L. Kasaei   +7 more
doaj   +2 more sources

Three-Dimensional Thermal Tomography with Physics-Informed Neural Networks

open access: yesTomography
Background: Accurate reconstruction of internal temperature fields from surface temperature data is critical for applications such as non-invasive thermal imaging, particularly in scenarios involving small temperature gradients, like those in the human ...
Theodoros Leontiou   +6 more
doaj   +2 more sources

Conformational-change-induced selectivity enhancement of CAU-10-PDC membrane for H2/CH4 and CO2/CH4 separation

open access: yesJournal of Membrane Science Letters, 2021
The separation of H2/CH4 or CO2/CH4 is critical to the purification of natural gas. Herein, we report on novel membranes with a metal-organic framework of CAU-10-PDC for the separation of these two mixtures.
Chung-Kai Chang   +7 more
doaj   +1 more source

Effect of Alloying Additives and Microadditives on Hardenability Increase Caused by Action of Boron

open access: yesMetals, 2021
The presented work was aimed at evaluating influence of boron on hardenability of steel quantitatively and evaluating this effect during complex use of boron with other alloying additives like chromium, vanadium and titanium.
Beata Białobrzeska
doaj   +1 more source

A Numerical and Analytical Study of Detonation Diffraction [PDF]

open access: yes, 2003
An investigation of detonation diffraction through an abrupt area change has been carried out via two-dimensional, parallel simulations. The existence of critical conditions for successful diffraction is closely related to the occurrence of localized re ...
Arienti, Marco
core   +1 more source

Influence of stone content on face stability for tunnels in sandy cobble strata

open access: yesFrontiers in Earth Science, 2023
As a result of the complex geological conditions of sand-cobble stratum, various types of problems may arise during construction of tunnels crossing sand-cobble stratum, the most prominent of which is the stability problem of the face.
Haifang Xue   +9 more
doaj   +1 more source

Comparative evaluation of cell types for endothelialization in cardiovascular tissue engineering [PDF]

open access: yesIranian Journal of Basic Medical Sciences
Tissue engineering represents a promising approach to overcome the limitations of current vascular grafts by promoting endothelialization. However, the successful fabrication of small-diameter (
Mohamed Elkawafi   +5 more
doaj   +1 more source

Percolation transitions of the ideal gas and supercritical mesophase [PDF]

open access: yes, 2016
High-temperature and pressure boundaries of the liquid and gaseous states have not been defined thermodynamically. Standard liquid-state physics texts use either critical isotherms or isobars as ad hoc boundaries in phase diagrams.
Woodcock, Leslie
core   +1 more source

Analyzing the Performance of Double Spiral Tube Ground Heat Exchangers in a Zero-Energy Building Using Measurement Data

open access: yesEnergies, 2023
A ground-source heat pump (GSHP) system is a renewable energy technology that effectively reduces greenhouse gas emissions and consequently mitigates the progression of global warming. The thermal efficiency of ground heat exchangers (GHEs) is a critical
Kunning Yang   +3 more
doaj   +1 more source

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