Temporal evolutions and quasi-periodic variations present in the sunspot number and group sunspot area data measured at Kodaikanal Observatory for solar cycles 14 to 24 [PDF]
ApJ, 2022, 2022 The Kodaikanal Observatory has made synoptic observations of the Sun in white light since 1904, and these images are sketched on the Stonyhurst grids called sun charts. These continuous hand-drawn data sets are used for long-term studies of the Sun. This article investigates temporal and periodic variations of the monthly hemispheric sunspot number and
arxiv +1 more source
The Mendeleev-Meyer force project [PDF]
, 2016 Here we present the Mendeleev–Meyer Force Project which aims at tabulating all materials and substances in a fashion similar to the periodic table. The goal is to group and tabulate substances using nanoscale force footprints rather than atomic number or
Amadei, Carlo Alberto +9 more
core +4 more sources
Zeeman slowing of a group-III atom
Physical 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
Periodic table for Floquet topological insulators [PDF]
, 2016 Periodically driven systems have recently been shown to host topological phases that are inherently dynamical in character, opening up a new arena in which to explore topological physics.
R. Roy, Fenner Harper
semanticscholar +1 more source
Gyrochronological dating of the stellar moving group Group X [PDF]
A&A 657, L3 (2022), 2021 Gyrochronology is one of the methods currently used to estimate the age of stellar open clusters. Hundreds of new clusters, associations, and moving groups unveiled by Gaia and complemented by accurate rotation period measurements provided by recent space missions such as Kepler and TESS are allowing us to significantly improve the reliability of this ...
arxiv +1 more source
Energy of Substitution of Anions and Cations in Zinc and Cadmium Telluride
Фізика 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
High school chemistry students\u27 learning of the elements, structure, and periodicity of the periodic table: contributions of inquiry-based activities and exemplary graphics [PDF]
, 2003 The main research question of this study was: How do selected high school chemistry students\u27 understandings of the elements, structure, and periodicity of the Periodic Table change as they participate in a unit study consisting of inquiry-based ...
Roddy, Knight Phares
core +2 more sources
Chemdex: quantification and distributions of valence numbers, oxidation numbers, coordination numbers, electron numbers, and covalent bond classes for the elements [PDF]
, 2023 The paper introduces Chemdex, a freely accessible web-based database of over 70 000 compounds characterised by crystallography from across the periodic table.
Winter, M.J.
core +1 more source
AIP 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
The Mnemonic Correction Becomes Meaningful Through Focus Group Discussion in Chemistry Learning
JTK (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