Results 221 to 230 of about 8,156 (254)

Oil Recovery Mechanisms During Sequential Injection of Chelating Agent Solutions Into Carbonate Rocks

Journal of Energy Resources Technology, 2019
Chelating agent solutions have been proposed as effective fluids for enhancing oil production. Different recovery mechanisms are reported for increasing the oil recovery during chelating agent flooding. The aims of this work are to identify the possible recovery mechanisms during chelating agent flooding in carbonate reservoirs and to investigate the ...
Amjed M. Hassan, Hasan S. Al-Hashim
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Comparative Effects of Continuous and Sequential Chelation Combined with Various Agitation Techniques on Smear Layer Elimination and Dentin Integrity

International Journal of Dental Research and Allied Sciences
Hatice Polat, İbrahim Koç, Merve Güneş   +2 more
exaly   +2 more sources

Calcium ethylenediaminetetraacetate toxicity in the rat: Sequential light- and electron-microscopic studies on chelate-induced enteropathy

Toxicology and Applied Pharmacology, 1974
Abstract Sequential morphologic and functional studies of CaEDTA-induced enteropathy revealed that morphologic changes are present before an increase in permeability occurs. Light microscopy revealed degenerative changes in duodenal crypt cells and electron microscopy revealed highamplitude swelling of mitochondria as early as 12 hr following the ...
Victor B.C. Braide, Arthur L. Aronson
openaire   +1 more source

Sequential application of chelating agents and innovative surfactants for the enhanced electroremediation of real sediments from toxic metals and PAHs

Chemosphere, 2014
This study focused on the sequential application of a chelating agent (citric acid) followed by a surfactant in the simultaneous electroremediation of real contaminated sediments from toxic metals and Polycyclic Aromatic Hydrocarbons (PAHs). Furthermore, the efficiency evaluation of two innovative non-ionic surfactants, commercially known as Poloxamer ...
John N, Hahladakis, Nikolaos, Lekkas, Andreas, Smponias, Evangelos, Gidarakos   +3 more
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Optimization of citric acid treatment for the sequential extraction of fucoidan and alginate from Sargassum latifolium and their potential antioxidant and Fe(III) chelation properties

Journal of Applied Phycology, 2021
In this study, citric acid was applied as a safe organic acid for the treatment of the brown macroalga Sargassum latifolium to facilitate the sequential extraction of fucoidan and alginate without cross contamination. Box-Behnken experimental design was used to investigate the effects of citric acid concentration, temperature, and time on fucoidan ...
Mustafa A. Fawzy, Mohamed Gomaa
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ChemInform Abstract: Sequential Chelation‐Assisted Aromatic C—H Functionalization via Catalytic meta Sulfonation.

ChemInform, 2014
AbstractSulfonylation of 2‐phenylpyridine proceeds at the meta‐phenyl position with high selectivity.
William R. Reynolds, Po Man Liu, Gabriele Kociok‐Koehn, Christopher G. Frost   +3 more
openaire   +1 more source

Effect of continuous vs sequential chelation on the mechanical properties of root dentin: An ex vivo study

Journal of Dentistry
To evaluate the mechanical properties of root canal dentin treated with sodium hypochlorite (NaOCl) in combination with hydroxyethylidene diphosphonic acid (HEDP) or ethylenediaminetetraacetic acid (EDTA).For testing fracture resistance, 45 single-rooted teeth were instrumented and irrigated with NaOCl/HEDP, NaOCl/EDTA, or distilled water.
Nidambur Vasudev Ballal, Ayan Bhadra Ray, Rajkumar Narkedamalli, Arun S Urala, Vineet Patel, Mark Harris, Brian E. Bergeron, Franklin R. Tay   +7 more
openaire   +2 more sources

Pioneering NTA-Chelating Resin Methodology for Sequential Th(IV) Capture from Highly Acidic Media

ACS Applied Materials & Interfaces
High-level radioactive liquid waste (HLW) from nuclear fuel reprocessing poses significant challenges for selective recovery of thorium(IV) due to its trace concentration in highly acidic, irradiated, and complex matrices. In this work, we developed a novel solid-phase extraction resin by immobilizing nitrilotriacetamide (NTA amide (C8)) onto a styrene-
Kesheng Hu, Yaowen Zhang, Lipeng Han, Yuankun Liu, Xiaojun Ding, Yingyu He, Yun Zhou, Junqiang Yang, Keliang Shi, Xiaolin Hou   +9 more
openaire   +2 more sources

Efficacy and safety of iron chelators in thalassemia and sickle cell disease: a multiple treatment comparison network meta-analysis and trial sequential analysis

Expert Review of Clinical Pharmacology, 2018
To compare the efficacy and safety of desferrioxamine (DFO), deferiprone (DFP), deferasirox (DFX) and silymarin in patients with either thalassemia or sickle cell disorder through network meta-analysis.Electronic databases were searched for appropriate randomized clinical trials comparing iron chelators in patients with iron overload.
Kannan Sridharan, Gowri Sivaramakrishnan
openaire   +2 more sources

An Integrative Technique Based on Synergistic Coremoval and Sequential Recovery of Copper and Tetracycline with Dual-Functional Chelating Resin: Roles of Amine and Carboxyl Groups

ACS Applied Materials & Interfaces, 2013
A novel chelating resin (R-AC) bearing dual-functional groups (amino and carboxyl groups) was self-synthesized and it showed superior properties on synergistic coremoval of Cu(II) and tetracycline (TC) to commercial resins (amine, carboxyl, and hydrophobic types), which was deeply investigated by equilibrium and kinetic tests in binary, preloading, and
Chen, Ling, Fu-Qiang, Liu, Chao, Xu, Tai-Peng, Chen, Ai-Min, Li   +4 more
openaire   +2 more sources