Results 41 to 50 of about 7,130 (202)

Influência de aditivos dispersantes e acelerador na hidratação de cimento e cimento-matriz Influence of dispersant and accelerator additives on hydration of calcium aluminate cement and cement-matrix

open access: yesCerâmica, 2006
A aplicação de concretos refratários, principalmente na siderurgia, é um processo em constante evolução, que apresenta uma forte dependência dos avanços dos conhecimentos sobre os ligantes hidráulicos.
I. R. Oliveira   +2 more
doaj   +1 more source

Functionally Decorated Carbon Nanotube Networks for Energy Storage in Supercapacitors

open access: yesFrontiers in Energy Research, 2020
A novel approach has been developed for the fabrication of Fe3O4 decorated multiwalled carbon nanotubes (MWCNT) for energy storage in negative electrodes of electrochemical supercapacitors.
Mohamed Nawwar   +5 more
doaj   +1 more source

Concretos refratários preparados com alumina hidratável: efeito dos dispersantes Refractory castables prepared with hydratable alumina: the dispersant effect

open access: yesCerâmica, 2009
Uma alumina de transição capaz de formar fases hidratadas em água tem sido utilizada como ligante hidráulico alternativo para concretos refratários. Entretanto, têm-se observado que a secagem de concretos preparados com este ligante é normalmente mais ...
I. R. Oliveira, V. C. Pandolfelli
doaj   +1 more source

Interfacial phenomena of magnesium hydroxide micro phases

open access: yesAin Shams Engineering Journal, 2021
The magnesium hydroxide aqueous suspensions were prepared over a wide range of different types of dispersants with different dosages percentage. The effect of dispersant types and dispersant dosages on the rheological behavior and stability of magnesium ...
Friedrich von Hoessle   +5 more
doaj   +1 more source

Synthesis and Characterization of Ethylene Carbonate Modified Polyisobutylene Succinimide Dispersants [PDF]

open access: yes, 2010
Succinimide-based dispersants are the most commonly used dispersants in the oil industry. They are used in engine oil to prevent the aggregation of carbon-rich particles generated during engine operation, and consequently reduce the production of sludge ...
Wang, Yulin
core  

Dispersants as marine oil spill treating agents: a review on mesoscale tests and field trials

open access: yesEnvironmental Systems Research, 2021
The increasing oil demand and busy waterways highlight the importance of oil spill preparedness and responses. Dispersants attract attention as an effective response tool to manage the impacts of major spill incidents.
Francois Merlin   +7 more
doaj   +1 more source

Dispersants as an oil spill clean-up technique in the marine environment: A reviewEnvironmental significant statement

open access: yesHeliyon, 2022
Oil is a major source of energy in the industrial world. Exploitation of oil and rigging activities, transportation via sea, and many other mechanical failures lead to oil spills into the marine environment.
Yaw Kwakye Adofo   +2 more
doaj   +1 more source

Synthesis and Characterization of Oil-soluble Dispersants [PDF]

open access: yes, 2006
Oil-soluble dispersants are some of the most important additives used by the oil industry. Their function is to reduce the aggregation of carbonaceous deposits produced during the normal operation of the engine.
Shen, Yu
core  

Effect of Using Different Chemical Dispersing Agents in Grain Size Analyses of Fluvial Sediments via Laser Diffraction Spectrometry

open access: yesMethods and Protocols, 2021
Laser diffraction spectrometry allows for efficiently obtaining high-resolution grain size data. However, pretreatment and dispersion of aggregates in sediment samples are essential pre-requisites for acquiring accurate results using this method.
Mubarak Abdulkarim   +7 more
doaj   +1 more source

Micellization and Adsorption of a Series of Succinimide Dispersants

open access: yes, 2016
The efficiency of a series of nonionic dispersants at stabilizing carbon-rich particles in oil was evaluated. The dispersants were synthesized by coupling a polyamine to two polyisobutylenes terminated at one end with a succinic anhydride (PIBSA).
Yu Shen (10486), Jean Duhamel (1390867)
core   +1 more source

Home - About - Disclaimer - Privacy