Results 21 to 30 of about 471,650 (358)

Porosities of Mandelbrot Percolation [PDF]

open access: yesJournal of Theoretical Probability, 2019
We study porosities in the Mandelbrot percolation process. We show that, almost surely at almost all points with respect to the natural measure, the mean porosities of the set and the natural measure exist and are equal to each other for all parameter values outside of a countable exceptional set. As a corollary, we obtain that, almost surely at almost
Berlinkov, A. (Artemi)   +1 more
openaire   +5 more sources

Analysis of the Effect of Ventilation Bars on the Packing Structure of Sinter Bed by DEM Simulation

open access: yesEnergies, 2020
The effect of ventilation bars on the porosity of a sinter bed charged on a sinter machine was investigated. The behavior of the sinter feed was calculated by discrete element method (DEM) simulation. By taking into account the adhesion force, the sinter
Shingo Ishihara   +2 more
doaj   +1 more source

Activated Carbons and Their Evaluation in Electric Double Layer Capacitors

open access: yesMolecules, 2020
This review presents a summary of the manufacturing of activated carbons (ACs) as electrode materials for electric double layer capacitors. Commonly used techniques of open and closed porosity determination (gas adsorption, immersion calorimetry, X-ray ...
Krzysztof Kierzek, Grażyna Gryglewicz
doaj   +1 more source

Influence of the Total Porosity on the Properties of Sintered Materials—A Review

open access: yesMetals, 2021
Porosity is a characteristic present in most sintered materials, full densification only being achieved in special cases. For some sintered materials, porosity is indeed a desired characteristic, serving for the intended application of the material.
F. Ternero   +4 more
semanticscholar   +1 more source

Effect of Zirconium on the Solidification Path and Structural Properties of Commercial AlSi10MgCu Alloys [PDF]

open access: yesArchives of Metallurgy and Materials, 2020
Comprehensive understanding of the melt quality is of vital importance for foundry man. The effect of each particular element need to be properly analysed.
P. Hajduch   +3 more
doaj   +1 more source

Porosities and dimensions of measures [PDF]

open access: yesNonlinearity, 1999
We introduce a concept of porosity for measures and study relations between dimensions and porosities for two classes of measures: measures on $R^n$ which satisfy the doubling condition and strongly porous measures on $R$.
Maarit Järvenpää   +2 more
openaire   +3 more sources

Effects of porosity on the mechanical properties of additively manufactured components: a critical review

open access: yesMaterials Research Express, 2020
In the present review, the effect of porosity on the mechanical properties of the fabricated parts, which are additively manufactured by powder bed fusion and filament extrusion-based technologies, are discussed in detail. Usually, additive manufacturing
A. Al-Maharma   +2 more
semanticscholar   +1 more source

Removal of Decontaminating Agent from Aqueous Solution Using Microporous and Mesoporous Materials: Activated Carbon as an Effective Adsorbent

open access: yesAdsorption Science & Technology, 2008
Wastewater from nuclear plants contains oxalic acid, a chelating compound used to remove surface activity. This forms complexes with radioactive cations, thereby impeding their removal by conventional techniques. In this study, oxalic acid was removed by
Narasimhan Gokulakrishnan   +2 more
doaj   +1 more source

Wave Interaction with Single and Twin Vertical and Sloped Slotted Walls

open access: yesJournal of Marine Science and Engineering, 2020
The interaction between waves and slotted vertical walls was experimentally studied in this research to examine the performance of the structure in terms of wave transmission, reflection, and energy dissipation.
Mohamad Alkhalidi   +2 more
doaj   +1 more source

Study on Magnetic Resonance Characteristics of Coal Sample under Progressive Loads

open access: yesApplied Sciences, 2020
With the characteristics of gradual instability in the supporting pressure area of roadway as the engineering background, this paper aims to explore the evolution law of pore and fracture in the coal sample under progressive loads.
Zhengzheng Xie   +4 more
doaj   +1 more source

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