Results 1 to 10 of about 167,887 (160)

Fabrication of Epoxy-date Fiber Composite with the Aim of Improving Mechanical Properties [PDF]

open access: yesفناوری در مهندسی هوافضا, 2021
One of the leading challenges in the fabrication of natural fiber composites is the adhesion of the fibers to the matrix. Since improving the adhesion between the fibers and the matrix changes the mechanical properties of natural composites, fiber ...
Sajedeh Hadavian   +4 more
doaj   +1 more source

One-part alkali activated slag using Ca(OH)2 and Na2CO3 instead of NaOH as activator: more excellent compressive strength and microstructure

open access: yesMaterials Research Express, 2021
In this paper, sodium carbonate and calcium hydroxide instead of sodium hydroxide used as composite activators, and slag are applied to prepare one-part alkali-activated slag.
Shiming Zhou   +4 more
doaj   +1 more source

Scientific Opinion on the safety and efficacy of sodium hydroxide for dogs, cats and ornamental fish [PDF]

open access: yesEFSA Journal, 2012
<p>The additive consists, by specification, of a minimum of 98.0 % sodium hydroxide or alkali in the solid form, the content of solutions scaled accordingly, based on the stated or labelled concentration.
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP)
doaj   +1 more source

Cold-pressed fly ash geopolymers: effect of formulation on mechanical and morphological characteristics

open access: yesJournal of Materials Research and Technology, 2021
This research uses low alkali activator content and cold pressing technique for fly ash-based geopolymers formation under room temperature condition. The geopolymers were prepared using four different parameters: fly ash/alkali activator ratio, sodium ...
Ong Shee-Ween   +8 more
doaj   +1 more source

Alkali activated slag-fly ash concrete incorporating precious slag as fine aggregate for rigid pavements

open access: yesJournal of Traffic and Transportation Engineering (English ed. Online), 2022
This study aims to develop the alkali activated slag-fly ash concrete (AASFC) using precious slag (PS) ball as the fine aggregate. The slag-fly ash proportion, sodium silicate/sodium hydroxide (SS/SH) ratio and sodium hydroxide concentration are the ...
Avinash Talkeri, A.U. Ravi Shankar
doaj   +1 more source

Evaluation of setting time and compressive strength of geopolymer paste containing blast furnace slag and zeolite [PDF]

open access: yesJournal of Structural and Construction Engineering, 2021
Production of Portland Cement (PC) is a highly energy-intensive process and causes significant environmental damages. Thus scientists are always after ways to reduce these negative effects and find a more efficient process of producing cement ...
Maryam Mohammadi Fatideh   +1 more
doaj   +1 more source

Chemical removal of calcium sulfate deposits from irrigation water transmission pipelines (Case study: Sedimentation of water transmission line from Sarcheshmeh copper complex tailing dam for agricultural use in downstream areas) [PDF]

open access: yesرویکردهای نوین در مهندسی آب و محیط زیست, 2023
Clogging and blockage of water transmission pipelines is one of the problems that reduce discharge downstream by creating various sediments. The aim of this study was to identify and remove the constraints caused by sediment in the water transmission ...
Anita Afkhami   +5 more
doaj   +1 more source

SBA-15 synthesis from sodium silicate prepared with sand and sodium hydroxide

open access: yesMaterials Research Express, 2020
In the industry, sodium carbonate is used to prepare sodium silicate; however, this process generates great volumes of CO _2 . In this work, sodium hydroxide has been proposed to prepare sodium silicate using natural sand. Two experimental variables were
A L Lázaro   +3 more
doaj   +1 more source

INFLUENCE OF DIFFERENT SOLVENTS ON THE QUALITY OF THE SOLUBILIZED PROTEIN [PDF]

open access: yesJournal of Soil Sciences and Agricultural Engineering, 2001
                The proteins of soybean and cottonseed meals were extracted with different solvents, with the aim of examining their effects on the composition, antinutritional factors, toxic ingredients, digestibility and some functional properties of ...
Samira Mohamed
doaj   +1 more source

The effect of water, urea, sodium hydroxide, and hydrogen peroxide processing on the cumin residues animal digestibility [PDF]

open access: yesInternational Journal of Recycling of Organic Waste in Agriculture, 2023
Purpose No research has been published on the effect of chemical processing on the degradability and nutritional value of cumin residue. Chemical processing, such as urea, sodium hydroxide, and hydrogen peroxide, has been widely investigated to increase ...
Farkhondeh Rezaii   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy