Results 1 to 10 of about 73,568 (120)

Polarization and dispersion corrections to the interfacial energy of the facets at the boundary between calcium/barium crystals and nonpolar organic liquids [PDF]

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2018
In this paper we have obtained polarization and dispersion corrections to the interfacial energy of the faces at the boundary between calcium and barium crystals of low-temperature modifications and nonpolar organic liquids using the electron-statistical
A.M. Apekov, I.G. Shebzukhova
doaj   +1 more source

CO2 reforming of CH4 over M(Ca, Ba, Sr)xLa1-xNiO3 perovskites used as coke resistant catalyst precursor [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2021
Methane and carbon dioxide are greenhouse gases that have been converted into synthesis gas for the production of oxygenated chemicals and hydrocarbons.
Trevisani Souza Ana Carolina   +1 more
doaj   +1 more source

The concentration ratio of alkaline earth elements calcium, barium and strontium in grains of diploid, tetraploid and hexaploid wheat [PDF]

open access: yesZbornik Matice Srpske za Prirodne Nauke, 2017
Even though calcium (Ca), strontium (Sr) and barium (Ba) belong to the same group of the periodic table of elements, and thus have similar chemical features, their importance for plants differs greatly.
Maksimović Ivana V.   +5 more
doaj   +1 more source

Modifying Effect of a New Boron-Barium Ferroalloy on the Wear Resistance of Low-Chromium Cast Iron

open access: yesMetals, 2022
This paper presents the results of a study and analysis of the effect of modifying low-chromium hypoeutectic cast iron with a new boron–barium ferroalloy on its properties—wear resistance and impact resistance—in comparison with traditional boron- and ...
Dastan Aubakirov   +5 more
doaj   +1 more source

Fractionation of 226Ra and Ba in the Upper North Pacific Ocean

open access: yesFrontiers in Marine Science, 2022
Investigations conducted during the GEOSECS program concluded that radium-226 (T1/2 = 1602 y) and barium are tightly correlated in waters above 2500 m in the Atlantic, Pacific and Antarctic Oceans, with a fairly uniform 226Ra/Ba ratio of 2.3 ± 0.2 dpm ...
Pieter van Beek   +7 more
doaj   +1 more source

Analysis of Sr and Ba profiles measured by ultra-high-resolution mass spectrometry LA-ICP-MS in otoliths of juvenile anadromous sockeye salmon Oncorhynchus nerka in the early marine life-history stage as a proxy for fresh to marine water transition

open access: yesИзвестия ТИНРО, 2021
The strontium (Sr) and barium (Ba) profiles in otoliths of juvenile sockeye salmon Oncorhynchus nerka from British Columbia are measured using a Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) system and analyzed.
Yu. Egorova   +4 more
doaj   +1 more source

Barium bis[tetrafluoridobromate(III)]

open access: yesIUCrData, 2021
Single crystals of barium bis[tetrafluoridobromate(III)], Ba[BrF4]2, were obtained in the form of tiny blocks. Crystal-structure refinement of Ba[BrF4]2 from single-crystal X-ray diffraction data confirmed the previous model obtained on the basis of ...
Sergei I. Ivlev, Florian Kraus
doaj   +1 more source

Role of promoters over yttria‐zirconia supported Ni catalyst for dry reforming of methane

open access: yesEnergy Science & Engineering, 2023
Dry reforming of methane (DRM) bears great hope for the catalytic community as well as environmentalists for its potential to convert two greenhouse gases, CH4 and CO2, together into synthetic feedstock “syngas”.
Anis H. Fakeeha   +7 more
doaj   +1 more source

Utilisation de quelques éléments minéraux dans la différenciation des vins de Galice de ceux d'autres régions d'Espagne

open access: yesOENO One, 1990
Les profondes différences qui existent entre les trois Appellations d'Origine de Galice quant au sol, au climat, au cépage sont la cause d'importantes différences analytiques que l'on retrouve dans les divers vins produits.
Carlos Herrero, Bernard Médina
doaj   +1 more source

Synthesis of Ionizable Calix[4]arenes for Chelation of Selected Divalent Cations

open access: yesMolecules, 2022
Two sets of functionalised calix[4]arenes, either with a 1,3-crown ether bridge or with an open-chain oligo ether moiety in 1,3-position were prepared and further equipped with additional deprotonisable sulfonamide groups to establish chelating systems ...
Markus Blumberg   +4 more
doaj   +1 more source

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