Results 1 to 10 of about 403,044 (136)

Design and Investigation of Superatoms for Redox Applications: First-Principles Studies

open access: yesMicromachines, 2023
A superatom is a cluster of atoms that acts like a single atom. Two main groups of superatoms are superalkalis and superhalogens, which mimic the chemistry of alkali and halogen atoms, respectively.
Celina Sikorska
doaj   +1 more source

HCnH Anion Chains with n ≤ 8 Are Nonlinear and Their Permanent Dipole Makes Them Potential Candidates for Astronomical Observation

open access: yesMolecules, 2022
To be detectable in space via radio astronomy, molecules should have a permanent dipole moment. This is the plausible reason why HCnH chains are underproportionally represented in the interstellar medium in comparison with the isoelectronically ...
Ioan Bâldea
doaj   +1 more source

Dynamics of the Chemical Composition of Precipitation and Input of Elements in an Agricultural Area in Southern Bulgaria [PDF]

open access: yesBulgarian Journal of Soil Science, 2023
The study of the chemical composition of precipitation is an important factor in determining the input of elements and the total anthropogenic load in agroecosystems.
Tsetska Simeonova, Lyuba Nenova
doaj   +1 more source

Anion Colorimetric Chemosensor Based on a Benzimidazole-Functionalized BODIPY Derivative

open access: yesChemistry Proceedings, 2022
A BODIPY derivative bearing a benzimidazole unit at position 2 and an electron donor group (anthracene) at the meso position was synthetized and characterized by the usual spectroscopic techniques.
Raquel C. R. Gonçalves   +3 more
doaj   +1 more source

Superhalogen Anions Supported by the Systems Comprising Alternately Aligned Boron and Nitrogen Central Atoms

open access: yesFrontiers in Chemistry, 2022
Using DFT/(B3LYP/wB97XD/B2PLYPD) and OVGF electronic structure methods with flexible atomic orbital basis sets, we examined the series of polynuclear superhalogen anions matching the (BF3(BN)nF4n+1)– formula (for n = 1-10,13,18-20) containing alternately
Adrianna Cyraniak   +4 more
doaj   +1 more source

Development of ion chromatography methods for the determination of trace anions in ultra pure water from power plants [PDF]

open access: yesJournal of the Serbian Chemical Society, 2005
A suppressed ion chromatography (IC) technique, using a carbonate/hydrogen carbonate or a hydroxide eluent, has been evaluated as a monitoring tool for the detection of major anions (F-, Cl-, NO3-, PO43- and SO42-) in ultra pure water and condensed steam
Čičkarić Dragana Z.   +3 more
doaj   +1 more source

Chaotropic and Kosmotropic Anions Regulate the Outcome of Enzyme-Mediated Dynamic Combinatorial Libraries of Cyclodextrins in Two Different Ways

open access: yesFrontiers in Chemistry, 2021
We demonstrate how different anions from across the Hofmeister series can influence the behavior of enzyme-mediated dynamic combinatorial libraries of cyclodextrins (CDs).
Andreas Erichsen   +2 more
doaj   +1 more source

A Thiophene-Based Dicyanovinyl as an Anion Chemosensor

open access: yesChemistry Proceedings, 2021
In recent years, push–pull dicyanovinyl derivatives have been reported for several optical applications, including as fluorescent probes for cyanide ion detection.
João P. Castro   +2 more
doaj   +1 more source

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

HYDROPERICARDIUM IN BROILER CHICKENS IN IRAQ: ISOLATION AND IDENTIFICATION OF THE CAUSATIVE VIRUS

open access: yesThe Iraqi Journal of Veterinary Medicine, 1996
An adenovirus was successfully isolated from infected liver, spleen and pericardial fluid from infected broiler chicks in primary cell cultures prepared from chicken embryo liver and kidneys.
Shoney M.Odisho   +2 more
doaj   +1 more source

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