Results 11 to 20 of about 1,168,088 (334)

A valence balanced rule for discovery of 18-electron half-Heuslers with defects

open access: yesEnergy and Environmental Science, 2018
Using first-principles DFT we systematically investigate the thermodynamic stability and off-stoichiometry in 108 nominal 19-electron half-Heusler (hH) compounds.
Shashwat Anand   +2 more
exaly   +2 more sources

Analysis of chemical structure and characteristics of building materials based on element chemistry [PDF]

open access: yesE3S Web of Conferences, 2021
Elements in accordance with a certain proportion and spatial arrangement constitute the microstructure of the building materials, which lead to a specific property and function in the macro.
Yanlong Zhao   +3 more
doaj   +1 more source

UMA TRADUÇÃO COMENTADA DO ARTIGO “ÁCIDOS E BASES” DE GILBERT NEWTON LEWIS [PDF]

open access: yesQuímica Nova, 2023
A COMMENTED TRANSLATION OF ACIDS AND BASES BY GILBERT NEWTON LEWIS. Gilbert Newton Lewis was a distinguished scientist in 20th century History of Chemistry.
Regiane Lopes dos Santos   +3 more
doaj   +1 more source

Understanding Periodic and Non-periodic Chemistry in Periodic Tables

open access: yesFrontiers in Chemistry, 2021
The chemical elements are the “conserved principles” or “kernels” of chemistry that are retained when substances are altered. Comprehensive overviews of the chemistry of the elements and their compounds are needed in chemical science.
Changsu Cao   +5 more
doaj   +1 more source

Opportunities to use interactive tasks in chemistry within the Middle Years Programme (basic school) of the International Baccalaureate

open access: yesRUDN Journal of Informatization in Education, 2020
Problem and purpose. Information and communication technologies (ICT) are considered one of the most progressive and effective means of increasing interest in learning, as well as developing students in modern teaching methods.
Vladimir I. Tomin
doaj   +1 more source

Relativistic effects on the chemistry of heavier elements: why not given proper importance in chemistry education at the undergraduate and postgraduate level?

open access: yesChemistry Teacher International, 2023
Relativistic effects are important to understand the chemistry of heavier elements across the periodic table (PT). Three important relativistic effects are: contraction of s- and p-orbitals (direct relativistic effect), expansion of d- and f-orbitals ...
Das Ankita   +3 more
doaj   +1 more source

Raman scattering spectra of amber [PDF]

open access: yesE3S Web of Conferences, 2020
The Raman spectra of amber (succinite) of different transparency levels of the Palmniken Deposit of Kaliningrad of Russia were obtained using the Fourier Transform–Raman spectroscopy method, which allows obtaining real and elemental compositions.
Verkhovskaia Iana, Prokopenko Viktor
doaj   +1 more source

PbTe Quantum Dots and Engineering of the Energy Band Alignment in Photovoltaic Applications

open access: yesSüleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, 2021
Lead telluride (PbTe) quantum dots, despite being considered as one of the most promising candidates for future photovoltaics owing to their higher multiple exciton generation yields, have received limited attention in solar cell designs due their less ...
Tuğba Hacıefendioğlu, Demet Asil
doaj   +1 more source

Probing electron localization during molecular dissociation by femtosecond strong-field ion momentum spectroscopy

open access: yesCommunications Physics, 2023
The study of molecular valence electron dynamics and their coupling with nuclear motion is one of the frontiers of ultrafast physics and ultrafast chemistry. With time-resolved strong-field ion momentum spectroscopy, we study electron valence and nucleus
Xinning Zhao   +15 more
doaj   +1 more source

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