Results 21 to 30 of about 174,368 (349)
Advances in the Fate of Rare Earth Elements, REE, in Transitional Environments: Coasts and Estuaries
Water, 2022 The production of rare earth elements, REE, has significantly increased over the past years, in parallel with the latest advances in nanotechnologies and representing a new group of emerging contaminants. They find application in construction, transport,
M. Arienzo +3 more
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EFFECT OF SOWING DATA AS WELL AS NITROGEN FERTILIZER LEVEL ON GROWTH, YIELD AND DRY SEED QUALITY OF COWPEA PLANT. [PDF]
Journal of Plant Production, 2002 A field experiment was carried out at Parra moon Experimental farm (EI- Dakahlia Govenorate) during 1998 and 1999 seasons to evaluate the productivity of cow pea (cream 7 c.v.) at three sowing dates started on 10 May with 20 days intervals and three ...
A. Moghazy, EI-Sh. Ameen, M. Tolba,
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Characterization of steel slag by SEM-EDS, XRD, and INAA
Brazilian Journal of Radiation Sciences, 2021 Steel slag is considered a by-product of the steel industry and its reuse is a strategy for environmental protection, since it consists of potential polluting materials.
Diogo Teixeira Moreira +2 more
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THORIUM, URANIUM AND RARE EARTH MINERALIZATION IN ROCKS OF THE UGAKHAN GOLD DEPOSIT, BODAIBO ORE REGION [PDF]
Минералогия, 2021 The paper reports on the results of studies of ore-bearing rocks of the Ugakhan gold deposit (Bodaybo district): metasandstones, metasiltstones and carbonaceous shales.
E.V. Shepel +3 more
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Записки Горного института, 2022 Based on a package of modern analysis methods, the influence of various acids and energy effects on the morphology, elemental composition, structural and chemical transformations of the mineral surface, and the efficiency of eudialyte concentrate ...
Valentin A. Chanturiya
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Quantum Information Processing, 2014 It is well-known that entanglement of formation (EOF) and relative entropy of entanglement (REE) are exactly identical for all two-qubit pure states even though their definitions are completely different. We think this fact implies that there is a veiled connection between EOF and REE.
Eylee Jung, Daekil Park
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F-rationality of Rees algebras [PDF]
Journal of Algebra, 2021 In this paper, we study the $F$-rationality of the Rees algebra and the extended Rees algebra of $\mathfrak{m}$-primary ideals in excellent local rings $(R, \mathfrak{m})$ of prime characteristic. We partially answer some conjectures and questions raised by N. Hara, K.-i. Watanabe and K.-i. Yoshida (J. Algebra, pp.153--190, vol 247, 2002).
Mitra Koley, Manoj Kummini
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Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2022 The peculiarities of the rare-earth elements distribution in the surface bottom sediments in the Gulf of Tonkin (South China Sea) are considered. According to the results of granulometric analysis, the sediments are mainly represented by pelitic silt ...
Легкодимов А.А. +2 more
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Selective flotation of phosphorus-bearing ores [PDF]
E3S Web of Conferences, 2020 This paper presents the results of the beneficiation of a phosphorus-bearing mineral through selective flotation process. The chemical examination showed that the sample contain a low content of P2O5 12.5 % and significant amounts of rare earth elements (
Elbendari Abdalla +3 more
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Pakistan Journal of Analytical & Environmental Chemistry, 2023 Rare earth elements (REEs) exist commonly in minerals, such as carbonates, silicates, fluorides, and phosphates. REEs are also found in coals, animals, algae, and plants which were proven to increase the growth, development, yield, and quality of crops ...
Le Quang-Huy +4 more
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