Results 11 to 20 of about 264,121 (351)

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

A Sr-Rich Star on the Main Sequence of Omega Centauri [PDF]

open access: yes, 2006
Abundance ratios relative to iron for carbon, nitrogen, strontium and barium are presented for a metal-rich main sequence star ([Fe/H]=--0.74) in the globular cluster omega Centauri. This star, designated 2015448, shows depleted carbon and solar nitrogen,
Asplund M.   +7 more
core   +3 more sources

Determination of Rare Earth Elements in Barite-associated Rare Earth Ores by Alkaline Precipitation Separation-Inductively Coupled Plasma-Mass Spectrometry

open access: yesYankuang ceshi, 2019
BACKGROUND When inductively coupled plasma-mass spectrometry (ICP-MS) is used to determine the rare earth elements (REE) in the barite-associated light rare earth ores, Ba and light rare earth elements La, Ce, Pr, Nd, Sm, cause severe mass spectral ...
DONG Xue-lin   +4 more
doaj   +1 more source

Mapping of potentially hazardous elements in the Cambrian Vendian aquifer system, northern Estonia [PDF]

open access: yesBulletin of the Geological Society of Finland, 2003
Communities and towns in northern Estonia rely upon either surface waters or groundwater from Cambrian-Vendian aquifer system with limited fresh water resources.
E. Karro, A. Marandi
doaj   +1 more source

Tungsten and barium transport in the internal plasma of hollow cathodes [PDF]

open access: yes, 2008
The effect of tungsten erosion, transport, and redeposition on the operation of dispenser hollow cathodes was investigated in detailed examinations of the discharge cathode inserts from 8200 h and 30 352 h ion engine wear tests.
Capece, Angela M.   +3 more
core   +1 more source

INFLUENCE OF ALKALINE – EARTH METALS ON ANODIC BEHAVIOR OF ALLOY ССУЗ IN NEUTRAL ENVIRONMENT OF THE ELECTROLYTE NaCl

open access: yesЛитьë и металлургия, 2018
The anodic behavior of a lead-antimony alloy (3 wt% Sb) doped with alkaline-earth metals was investigated in potentiostatic method in the potentiodynamic mode at a potential sweep rate of 2 mV/s and it was shown that with an increase in the content of ...
I. N. Ganiev   +3 more
doaj   +1 more source

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