Results 11 to 20 of about 3,847,034 (280)

A chelating agent system for the removal of barium sulfate scale

open access: yesJournal of Petroleum Exploration and Production Technology, 2020
This study aimed to prepare a chelating agent SA-20 using diethylenetriaminepentaacetic acid (DTPA) and low molecular weight sodium polyacrylate raw material for the removal of barium sulfate (BaSO 4 ) scale.
Zhi-feng Luo   +6 more
semanticscholar   +2 more sources

Chelating agent and substrate effect on hydrothermal growth of Yb3+/Er3+ doped NaYf4 film [PDF]

open access: yesProcessing and Application of Ceramics, 2021
We report simultaneous crystal growth and deposition of upconverting Yb3+/Er3+ doped NaYF4 film (UCF) on conducting and non-conducting substrates by one-step hydrothermal method.
Duhan Suman   +4 more
doaj   +1 more source

Novel chemical stimulation for geothermal reservoirs by chelating agent driven selective mineral dissolution in fractured rocks

open access: yesScientific Reports, 2021
Improving geothermal systems through hydraulic stimulation to create highly permeable fractured rocks can induce seismicity. Therefore, the technique must be applied at a moderate intensity; this has led to concerns of insufficient permeability ...
N. Watanabe   +7 more
semanticscholar   +1 more source

Study of Chelating Agent—Surfactant Interactions on the Interphase as Possibly Useful for the Well Stimulation

open access: yesEnergies, 2023
Chelating agents’ application for EOR and well stimulation is fast growing nowadays. However, reagents of this class have some drawbacks, with high values of interfacial tension (IFT) being among them. IFT may be lowered with the addition of surfactants;
Timur Ildarovich Yunusov   +3 more
doaj   +1 more source

Impact of Chelating Agent Salt Type on the Enhanced Oil Recovery from Carbonate and Sandstone Reservoirs

open access: yesApplied Sciences, 2021
In this paper, chelating agents were introduced as standalone fluids for enhancing the oil recovery from carbonate and sandstone reservoirs. Chelating agents such as glutamic acid di-acetic acid (GLDA), ethylene-diamine-tetra acetic acid (EDTA), and ...
Amjed Hassan   +2 more
doaj   +1 more source

Iron(III) chelating resins-IV. Crosslinked copolymer beads of 1-(B-acrylamidoethyl)-3-hydroxy-2-methyl-4(1H)-pyridinone (AHMP) with 2-hydroxyethyl methacrylate (HEMA) [PDF]

open access: yes, 1994
Iron(III) chelating beads have been synthesized by copolymerization of 1-(ß-acrylamidoethyl)-3-hydroxy-2-methyl-4(IH)-pyridinone (AHMP) with 2-hydroxyethyl methacrylate (HEMA), and ethyleneglycol dimethacrylate (EGDMA) as the crosslinking agent.
Bantjes, A.   +2 more
core   +7 more sources

Role of Testosteronthiosemicarbazone as an Antibacterial Agent [PDF]

open access: yesEngineering and Technology Journal, 2010
A ligand of testosteronthiosemicarbazone was prepared, the chemicalcharacteristics of this ligand are: yellow powder, soluble in alcohol and its melting point is 100 – 102 °C.
Abbas A. Al-Janabi   +2 more
doaj   +1 more source

Effect of Hydrogen Peroxide and Oxalic Acid on Material Removal in Al CMP [PDF]

open access: yes한국정밀공학회지, 2017
Chemical mechanical polishing achieves surface planarity through combined mechanical and chemical means. The role of the chemical reaction is very important in a metal CMP like aluminum.
Jin Yeop Jeong   +3 more
doaj   +1 more source

Renal Function in Children with β-Thalassemia Major Treated with Iron Chelating Agent

open access: yesIndonesian Biomedical Journal, 2020
BACKGROUND: Thalassemia is a disorder of inherited blood and inticated by the abnormal hemoglobin. Transfusion and iron chelation are part of thalassemia management.
Olga Rasiyanti Siregar   +2 more
doaj   +1 more source

Pyclen-based Gd complex with ionisable side-chain as a contrastophore for the design of hypersensitive MRI nanoprobes: Synthesis and relaxation studies

open access: yesResults in Chemistry, 2021
A straightforward method for synthesizing at the multigram scale a low molecular weight PCTA-based gadolinium complex bearing an ionizable oxyacetic chain on the pyridine unit was described, together with its encapsulation within a nanohydrogel matrix ...
Fabienne Dioury   +8 more
doaj   +1 more source

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