Results 21 to 30 of about 38,672 (197)

Electrophysical characteristics of nanodimensional cobalte-cuprate-manganite LaNa2CoCuMnO6 and nickelite-cuprate-manganite LaNa2NiCuMnO6

open access: yesҚарағанды университетінің хабаршысы. Физика сериясы, 2020
The temperature dependences of the electric capacity, dielectric constant and electrical resistance of cobaltecuprate-manganite of lanthanum and sodium of LaNa2CoCuMnO6 and nickelite-cuprate-manganite of lanthanum and sodium of LaNa2NiCuMnO6 were ...
Ш.Б. Касенова   +5 more
doaj   +1 more source

Study of the effects of lanthanum and the iron ion on the acidic properties of Al-pillared vermiculite [PDF]

open access: yesMaterials Research, 2013
The synthesis of porous materials has attracted interest for decades due to their applications in catalysis and gas adsorption. Clay obtained by insertion of mesoporous oligomer [La xAl13-xO4 (OH)24 (H2O)12]7 + (where x equals the molar amount of ...
Marcus Venicio da Silva Fernandes   +1 more
doaj   +1 more source

Lanthanum Supplementation Alleviates Tomato Root Growth Suppression under Low Light Stress

open access: yesPlants, 2023
Supplementation with rare earth elements (REEs) such as lanthanum and cerium has been shown to promote plant elongation and/or increase crop yields. On the other hand, there are reports that REE supplementation of plants has no such effect.
Syo Iguchi   +6 more
doaj   +1 more source

Superconductivity of Lanthanum and Some Lanthanum Alloys

open access: yesPhysical Review, 1958
Superconductivity has been observed for two structures of lanthanum. A close-packed hexagonal structure was found to have a transition temperature near 5.0\ifmmode^\circ\else\textdegree\fi{}K and the face-centered cubic structure had a transition temperature of 5.95\ifmmode^\circ\else\textdegree\fi{}K.
G. S. Anderson   +2 more
openaire   +2 more sources

Extraction of Rare-Earth Elements from Silicate-Based Ore through Hydrometallurgical Route

open access: yesMetals, 2022
The European Union and several countries/regions classified the rare-earth elements (REEs), such as lanthanum, cerium, neodymium, and scandium, as critical due to the risk of supply interruption.
Amilton Barbosa Botelho Junior   +3 more
doaj   +1 more source

Structural, microstructural, electrical properties of lanthanum doped-bismuth titanate ceramics prepared by low temperature combustion synthesis [PDF]

open access: yesScience of Sintering, 2017
In this work, lanthanum doped-bismuth titanate with different contents were successfully prepared by low-temperature combustion synthesis, and subsequently, sintered at 1000 oC for 3 hours.
Al-Amani Azlan Umar   +1 more
doaj   +1 more source

Proteomic Analysis Reveals the Association between the Pathways of Glutathione and α-Linolenic Acid Metabolism and Lanthanum Accumulation in Tea Plants

open access: yesMolecules, 2023
Lanthanum can affect the growth and development of the tea plant. Tieguanyin (TGY) and Shuixian (SX) cultivars of Camellia sinensis were selected to explore the mechanism underlying the accumulation of lanthanum (tea plants’ most accumulated rare earth ...
Zhihui Xue   +3 more
doaj   +1 more source

Concentration dependence of the fluorescence decay profile in transition metal doped chalcogenide glass [PDF]

open access: yes, 2007
In this paper we present the fluorescence decay profiles of vanadium and titanium doped gallium lanthanum sulphide (GLS) glass at various doping concentrations between 0.01 and 1% (molar).
Curry, R.J.   +11 more
core   +1 more source

Carbonized Lanthanum-Based Metal-Organic Framework with Parallel Arranged Channels for Azo-Dye Adsorption

open access: yesNanomaterials, 2020
In this contribution, the synthesis of the metal−organic framework (MOF) based on lanthanum that exhibits trigonal prism shape is presented. The length of a single side of this structure ranges from 2 to 10 μm.
Krzysztof Cendrowski   +2 more
doaj   +1 more source

Binary Pectin-Chitosan Composites for the Uptake of Lanthanum and Yttrium Species in Aqueous Media 

open access: yesMicromachines, 2021
Rare-earth elements such as lanthanum and yttrium have wide utility in high-tech applications such as permanent magnets and batteries. The use of biopolymers and their composites as adsorbents for La (III) and Y (III) ions were investigated as a means to
Dexu Kong, Eny Kusrini, Lee D. Wilson
doaj   +1 more source

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