Results 251 to 260 of about 882,490 (296)
Some of the next articles are maybe not open access.
Oxide Adhesion on Periodic Table Group 4 and 5 Metals
1989The oxide scale adhesion on Periodic Table group IV and V metals is evoked through two new concepts in high temperature corrosion: bistability and solute elastic effect.
M. Lallemant +4 more
openaire +1 more source
Group theoretical aspects of the periodic table of the elements
Journal of Molecular Structure: THEOCHEM, 1989Abstract Several attempts to obtain the overall (approximate) symmetry of the periodic system of the elements are discussed. The symmetries are analysed in terms of the prediction of magic numbers in Meyer-Mendeleev's table; this is shown to be a still elusive goal. Other group-theoretical aspects are, however, better understood, such as the roles of
openaire +1 more source
Walking Down the Chalcogenic Group of the Periodic Table: From Singlet to Triplet Organic Emitters
Chemistry – A European Journal, 2015AbstractThe synthesis, X‐ray crystal structures, ground‐ and excited‐state UV/Vis absorption spectra, and luminescence properties of chalcogen‐doped organic emitters equipped on both extremities with benzoxa‐, benzothia‐, benzoselena‐ and benzotellurazole (1X and 2X) moieties have been reported for the first time.
Kremer Adrian +7 more
openaire +5 more sources
Thermal and thermodynamic data concerning the selenites from group IB in the periodic table
Thermochimica Acta, 1984Abstract The thermal dehydration of CuSeO 3 ·2 H 2 O, and the thermal dissociation of CuSeO 3 and Ag 2 SeO 3 are studied. The mechanism of these processes is suggested. The heats of phase transitions and the specific heats of the corresponding compounds are determined.
G.G. Gospodinov, B.G. Bogdanov
openaire +1 more source
Group Theoretical Description of Periodic System of Elements: II. Seaborg Table
Mathematical structures and modeling, 2019Group theoretical description of Seaborg table (an eight-periodic extension of the Mendeleev table) is considered in the framework of the Rumer-Fet model. The mass formula, which allows one to provide a termwise mass splitting of the basic representation of the Rumer-Fet group, is introduced.
openaire +1 more source
Advances in polymerization catalysts based on 4 and 5F groups of periodic table
Inorganica Chimica Acta, 1984Abstract So far, in the development of new catalyst systems, the attention of chemists has been customarily addressed to catalyst activity, regio and stereospecificity. Nowadays, the impact of catalyst systems on other aspects of a chemical process has to be taken in due account, in relation to the increased cost of raw materials and energy.
openaire +1 more source
Emissivity of group V elements periodic table in a wide temperature range
Izvestiâ Akademii nauk SSSR. ÈnergetikaThe results of a study of the normal integral emissivity of the elements of group V of the Periodic system in the solid–liquid temperature range are presented. The choice of research objects – metallic vanadium, antimony and bismuth, is justified by the absence of data on the emissivity of these elements in the open press.
D. V. Kosenkov, V. V. Sagadeev
openaire +1 more source
The evolving landscape of salivary gland tumors
Ca-A Cancer Journal for Clinicians, 2023Conor Steuer
exaly

