Results 1 to 10 of about 171,178 (245)

Numerical optimization of the piezoelectric generators [PDF]

open access: yesJournal of Advanced Dielectrics, 2020
This paper presents the application of the Pareto-based multicriteria optimization technique to problems of increasing the efficiency of piezoelectric generators (PEGs).
V. A. Chebanenko   +4 more
doaj   +1 more source

Study of Surface Roughness and Burr Formation After Milling of Carbon Fiber/Titanium Stacks [PDF]

open access: yesMaterials Research, 2020
This work aims to study the influence of cutting parameters (cutting speed, feed rate, cutting depth and tool cutting edge angle) regarding surface roughness and burr formation during the milling of a mixed structure comprised of titanium and carbon ...
Tarik Hazem Ashmawi   +3 more
doaj   +1 more source

The development of solid oxide co-electrolysis of H2O and CO2 on large-size cells and stacks

open access: yesiEnergy, 2023
In the context of carbon neutrality, conversion of CO2 into CO is an effective way for negative carbon emission. Electrochemical reduction is a novel developed pathway, among which, solid oxide co-electrolysis technology is promising for its high ...
Jingjing Liang   +5 more
doaj   +1 more source

Effects of a Hydraulic Series Connection and Flow Direction on Electricity Generation in a Stack Connected with Different Volume MFCs

open access: yesApplied Sciences, 2021
Three microbial fuel cells (MFCs) with different volumes (S-, M-, and L-MFCs) were operated at individual flow (phase I) and serially connected flow modes (phase II for forward flow and phase III for reverse flow) at the same flow rate.
Jaecheul Yu
doaj   +1 more source

Analysis of methods for selection of optimal parameters of stack

open access: yesИзвестия высших учебных заведений: Проблемы энергетики, 2021
The most significant technical solutions should be optimized using a technical and economic analysis, which reduces the cost of their implementation. Due to the fact that the diameter and height of the chimney depends on the gas velocity in the chimney ...
K. M. Mirsalikhov   +2 more
doaj   +1 more source

Reverse Electrodialysis: Co- and Counterflow Optimization of Multistage Configurations for Maximum Energy Efficiency

open access: yesMembranes, 2020
Reverse electrodialysis (RED) is one of the techniques able to harvest energy from the salinity gradient between different salt solutions. There is a tradeoff between efficiency and generated power in a RED stack. This paper focuses on efficiency.
Joost Veerman
doaj   +1 more source

Reinterpreting π-stacking [PDF]

open access: yesPhysical Chemistry Chemical Physics, 2020
Examination of the question “is π-stacking a unique form of dispersion?” reveals that planarity, rather than aromaticity per se , facilitates especially strong interactions between polycyclic aromatic hydrocarbons.
Kevin Carter-Fenk, John Herbert
openaire   +2 more sources

Stack-sorting with consecutive-pattern-avoiding stacks [PDF]

open access: yesAdvances in Applied Mathematics, 2021
We introduce consecutive-pattern-avoiding stack-sorting maps $\text{SC}_σ$, which are natural generalizations of West's stack-sorting map $s$ and natural analogues of the classical-pattern-avoiding stack-sorting maps $s_σ$ recently introduced by Cerbai, Claesson, and Ferrari.
Defant, Colin, Zheng, Kai
openaire   +2 more sources

Stack sorting with restricted stacks [PDF]

open access: yesJournal of Combinatorial Theory, Series A, 2020
The (classical) problem of characterizing and enumerating permutations that can be sorted using two stacks connected in series is still largely open. In the present paper we address a related problem, in which we impose restrictions both on the procedure and on the stacks.
Cerbai G., Claesson A., Ferrari L.
openaire   +3 more sources

Design and Optimization of a Standing-Wave Thermoacoustic Refrigerator Using DELTAEC

open access: yesDiyala Journal of Engineering Sciences, 2023
Thermoacoustic refrigeration is one of the best alternatives to conventional refrigeration systems due to the use of inert gases such as helium or air.
Mohanad Q. Kamil   +2 more
doaj   +1 more source

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