Results 1 to 10 of about 89,754 (148)

Experimental Study on Migration Characteristics and Profile Control Performance of Gel Foam in Fractured-Vuggy Reservoir [PDF]

open access: yesGels
Gel foam exhibits excellent applicability in fractured-vuggy reservoirs, effectively plugging flow channels and enhancing oil recovery. However, due to the harsh high-temperature environment and the complex and variable fracture-vuggy structure in ...
Yan Xin   +5 more
doaj   +2 more sources

Dependence of the volume stability on the expansion rate of low-expansion foam

open access: yesВесці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук
In this work, we analyzed and summarized the results of experimental studies of the characteristics of air-mechanical foam generated on the deflector type sprinklers and in the foam generating devices with mesh using three brands of general purpose foam ...
A. N. Kamluk   +2 more
doaj   +2 more sources

Mathematical model of foam expansion rate generated in sprinklers

open access: yesMagazine of Civil Engineering
Foam solution discharge is always accompanied by changes in the operating pressure due to different pressure losses along the pipeline in automatic foam extinguishing systems.
Kamluk Andrei   +3 more
doaj   +2 more sources

Experimental determination of the rational geometrical parameters of the sprinkler frame arms and deflector on the expansion rate and stability of foam

open access: yesВесці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2019
The results of experimental studies on determination of the effect of the deflector-type sprinkler geometric parameters on the air-mechanical foam formation process are presented in the article.
A. N. Kamluk, A. O. Likhamanau
doaj   +3 more sources

Effect of Red and Grey Selenium Nanoparticles on Yeast Growth: Short Communication [PDF]

open access: yesFoods
Selenium nanoparticles (SeNPs) present a promising alternative to toxic inorganic selenium salts, yet the differential bioactivity between their allotropic forms—amorphous red (RSeNPs) and crystalline grey (GSeNPs)—is not fully determined.
Aya Ferroudj   +3 more
doaj   +2 more sources

Effect of Foaming Temperature on Microstructure, Mechanical Properties and Flame Spread Rate in PET–PEN Copolymer

open access: yesEnergies, 2021
Polymer foams are expanding their applications into functional materials. Partial foam structure has been fabricated in polyethylene terephthalate–polyethylene naphthalate (PET–PEN) copolymer by solid state foaming.
Byung Kyu Park   +2 more
doaj   +1 more source

Experimental determination of the Class B fire extinguishing efficiency using low-expansion foam generated by deflector type sprinklers

open access: yesВестник Университета гражданской защиты МЧС Беларуси, 2020
Purpose. To establish the relationship between the foam expansion rate and stability of low-expansion air-mechanical foam generated in deflector type sprinklers for automatic extinguishing systems.
Андрей Николаевич Камлюк   +2 more
doaj   +1 more source

Influence of Aluminum Powder Content on Expansion Rate of Foamed Concrete

open access: yesIOP Conference Series: Earth and Environmental Science, 2021
Abstract Foamed concrete is a heat preservation and noise reduction material made of cement and aluminum powder as foaming agent. The experiment mainly studies the influence of different water-cement ratio, foaming agent dosage and cement dosage on the expansion rate of foamed concrete test block.
Jiaqi Li   +4 more
openaire   +1 more source

Effect of pre-oxidation treatment of TiH2 and foaming temperature on cell structure of Al-7Si closed-cell aluminum foams

open access: yesCailiao gongcheng, 2021
A powder metallurgy rapid foaming method was used to prepare Al-7Si closed-cell aluminum foam, and the influence of the preparation process parameters on the expansion rate, porosity, cell number and pore diameter of the aluminum foam after using high ...
YANG Xu-dong   +3 more
doaj   +1 more source

The Influence of Alloy Composition and Liquid Phase on Foaming of Al−Si−Mg Alloys [PDF]

open access: yes, 2020
The foaming behaviour of aluminium alloys processed by the powder compaction technique depends crucially on the exact alloy composition. The AlSi8Mg4 alloy has been in use for a decade now, and it has been claimed that this composition lies in an “island
Banhart, John   +6 more
core   +1 more source

Home - About - Disclaimer - Privacy