Results 31 to 40 of about 209,205 (315)

Maximum Ionization in Restricted and Unrestricted Hartree-Fock Theory

open access: yesAtoms, 2021
In this paper, we investigate the maximum number of electrons that can be bound to a system of nuclei modelled by Hartree-Fock theory. We consider both the Restricted and Unrestricted Hartree-Fock models. We are taking a non-existence approach (necessary
Hazel Cox   +2 more
doaj   +1 more source

Lower-rim ferrocenyl substituted calixarenes: new electrochemical sensors for anions [PDF]

open access: yes, 1998
New ferrocene substituted calix[4 and 5]arenes have been prepared and the crystal structure of a lower-rim substituted bis ferrocene calix[4]arene (7) has been elucidated. The respective ferrocene/ferrocenium redox-couples of compounds 6 (a calix[4]arene
Drew, MGB   +9 more
core   +1 more source

Application of Geopolymer in Stabilization/Solidification of Hazardous Pollutants: A Review

open access: yesMolecules, 2022
Geopolymers, as a kind of inorganic polymer, possess excellent properties and have been broadly studied for the stabilization/solidification (S/S) of hazardous pollutants.
Quanzhi Tian   +6 more
doaj   +1 more source

Validation of ion chromatographic method for determination of inorganic anions in bottled water [PDF]

open access: yesMakedonsko Farmacevtski Bilten
This study validates a method for the determination of anions in drinking water using ion chromatography (IC), with a focus on accuracy, precision, and reliability, aligned with regulatory requirements for water quality monitoring.
Ramize Kruezi   +4 more
doaj   +1 more source

Study on Extraction Performance of Vanadium (V) from Aqueous Solution by Octyl-Imidazole Ionic Liquids Extractants

open access: yesMetals, 2022
It is worth it to explore the extraction performance for vanadium by the imidazole ionic liquids. The extraction of vanadium (V) was studied using [Omim]Cl, [Omim]Br, and [Omim][BF4] as extractants.
Jingui He, Wenju Tao, Guozhen Dong
doaj   +1 more source

Circulating anions usually associated with the Krebs cycle in patients with metabolic acidosis [PDF]

open access: yes, 2005
Introduction: Acute metabolic acidosis of non-renal origin is usually a result of either lactic or ketoacidosis, both of which are associated with a high anion gap.
Treacher, David F   +17 more
core   +1 more source

Deuteration Effects on the Transport Properties of (TMTTF)2X Salts

open access: yesCrystals, 2020
The electronic properties in the quasi-one-dimensional Fabre salts are strongly affected by electronic correlations along the molecular stacks, but also by the interactions with the anions located in a cage that is formed by the methyl end groups.
Andrea Rohwer   +2 more
doaj   +1 more source

Uncoordinated β-Diketiminate Anions: Structural Insights from Caesium Complexes [PDF]

open access: yes, 2023
This study reports the first structural elucidation of uncoordinated β-diketiminate anions (BDI–) in the presence of caesium complexes. The β-diketiminate caesium salt (BDICs) was synthesised, and upon addition of Lewis donor ligands, free BDI– anions ...
Hellen, Videa   +1 more
core   +1 more source

Influence of the anion specificity on the anodic polarization of titanium [PDF]

open access: yes, 2011
The anodic polarization of titanium in the presence of selected electrolytes at 0.1 mol/L concentration has been investigated. The results were interpreted according to the categorization of anions based on their cosmotrope/chaotrope character.
Trompette, Jean-Luc   +7 more
core   +1 more source

DFT studies of binding of fluoride anions with silyl-fluorescein derivatives [PDF]

open access: yes, 2023
Fluoride is abundantly used in dental healthcare and pharmaceutical industry, it is harmful if it is found over certain concentration in drinking water and in soil. It is therefore essential to develop portable tools to detect fluoride.
Lichang, Wang, Krishanthi, Weerasinghe
core   +1 more source

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