Results 31 to 40 of about 880,736 (328)

Zeeman slowing of a group-III atom

open access: yesPhysical Review Research, 2022
We realize a Zeeman slower of an atom in main group III of the Periodic Table, otherwise known as the “triel elements.” Despite the fact that our atom of choice (namely indium) does not have a ground state cycling transition suitable for laser cooling ...
Xianquan Yu   +4 more
doaj   +1 more source

Energy of Substitution of Anions and Cations in Zinc and Cadmium Telluride

open access: yesФізика і хімія твердого тіла, 2017
Energy substitution of cations and anions in ZnTe i CdTe by atoms from first and seventh group of the periodic table were calculated using the method of bonding orbitals. Based on the results conclusions about the most likely types of defects by doping.
V. V. Prokopiv   +5 more
doaj   +1 more source

Alchemical and structural distribution based representation for improved QML

open access: yes, 2017
We introduce a representation of any atom in any chemical environment for the generation of efficient quantum machine learning (QML) models of common electronic ground-state properties.
Feifei Ren (558363)   +5 more
core   +4 more sources

Examination of the preservice chemistry teachers’ understanding of periodic table concepts

open access: yesSHS Web of Conferences, 2018
The purpose of this study was to examine the preservice chemistry teachers’ understanding of periodic table concepts and some atomic properties. The study group of this study was comprised of 17 preservice chemistry teachers who were undergraduate ...
Şen Şenol
doaj   +1 more source

Effect of the Y element on the structural, electronic and magnetic properties of Heusler compounds Co2YIn (Y = V, Nb, and Ti): An ab initio study

open access: yesAIP Advances, 2021
We report the effect of varying the Y element on the structural, electronic and magnetic properties of Co2YIn (Y = V, Nb, Ti) Heusler compounds using Density Functional Theory (DFT).
Zipporah Muthui   +3 more
doaj   +1 more source

Comparing Study of The Stability and spectral properties vibrations for some Tellurium (IV) compounds containing cycloctadienyl group by Quantum Mechanical Calculations

open access: yesمجلة بغداد للعلوم, 2013
Density Functional Theory (DFT) with B3LYP hybrid exchange-correlation functional and 3-21G basis set and semi-empirical methods (PM3) were used to calculate the energies (total energy, binding energy (Eb), molecular orbital energy (EHOMO-ELUMO), heat ...
Baghdad Science Journal
doaj   +1 more source

The Mnemonic Correction Becomes Meaningful Through Focus Group Discussion in Chemistry Learning

open access: yesJTK (Jurnal Tadris Kimiya), 2022
One of the concerns in the learning process is the meaning of writing mnemonics to help students memorize chemistry concepts. The research aimed to correct mnemonics in learning presentation by prospective chemistry teachers' students to be meaningful ...
Sri Winarni, Syahrial Syahrial
doaj   +1 more source

LASER ELEMENTAL ANALYZER LASER-Z FOR SOILS, ORES, MINERALS AND MINING AND CHEMICAL RAW MATERIAL [PDF]

open access: yesМинералогия, 2016
SciAsp Company, a leading world producer of portable analytical equipment, presents new series of laser analyzers Laser-Z. Portable mining and geological analyzers Laser-Z will perform field elemental analysis for almost any group of the Periodic Table.
E. Skorina
doaj  

A "Periodic Table" for Supersymmetric M-Theory Compactifications

open access: yes, 2002
We develop a systematic method for classifying supersymmetric orbifold compactifications of M-theory. By restricting our attention to abelian orbifolds with low order, in the special cases where elements do not include coordinate shifts, we construct a ...
Acharya   +33 more
core   +1 more source

Non periodic Ishibashi states: the su(2) and su(3) affine theories [PDF]

open access: yes, 2002
We consider the su(2) and su(3) affine theories on a cylinder, from the point of view of their discrete internal symmetries. To this end, we adapt the usual treatment of boundary conditions leading to the Cardy equation to take the symmetry group into ...
Behrend   +16 more
core   +3 more sources

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