Results 11 to 20 of about 252,185 (293)

Behavior of rare earth elements in the soil and vegetable cover of urban landscapes in Sochi

open access: yesВестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2021
The geochemical regional specialization of the behavior of rare earth elements (REE) in the soils of Sochi, manifested in the predominance of REE of the middle group, has been established.
Захарихина Л.В.   +1 more
doaj   +1 more source

Time to achieve steady state for an accurate assessment of resting energy expenditure in adolescents with healthy weight and obesity: A cross-sectional study

open access: yesArchives of Endocrinology and Metabolism, 2022
Objective: The present study investigated the time needed to achieve a steady state for an accurate assessment of resting energy expenditure (REE) in adolescents with healthy weight and obesity. Materials and methods: Thirty adolescents aged 12-17 years
Isabela F. Soares   +2 more
doaj   +1 more source

Bioconcentration and translocation of rare earth elements in plants collected from three legacy mine sites in Portugal

open access: yesFrontiers in Environmental Science, 2023
Rare earth elements (REE), a group of emerging contaminants with commercial and technological applications, share many physical and chemical characteristics and have thus been used as accurate tracers of various environmental samples.
Kaisa Forsyth   +14 more
doaj   +1 more source

Rare earth distribution in Batu Melintang Granitic Rocks, Jeli, Kelantan [PDF]

open access: yesBIO Web of Conferences, 2023
Rare Earth Element (REE) is a group of elements that consisting of 17 metallic elements that that occur together in the periodic table, 15 lanthanides (La), Scandium (Sc) and Yttrium (Y).
Anak Rebu Shawn Iversen   +5 more
doaj   +1 more source

Integrated environmental risk assessment of rare earth elements mixture on aquatic ecosystems

open access: yesFrontiers in Environmental Science, 2022
Rare Earth elements (REE) have become essential in strategical sectors such as high- and green-technologies. Their increasing use in human activities worldwide leads to anthropogenic REE releases detectable in all compartments of the environment ...
Nicolas Lachaux   +7 more
doaj   +1 more source

Rees algebras of additive group actions [PDF]

open access: yesMathematische Zeitschrift, 2022
We establish basic properties of a sheaf of graded algebras canonically associated to every relative affine scheme $f : X \rightarrow S$ endowed with an action of the additive group scheme $\mathbb{G}_{ a,S}$ over a base scheme or algebraic space $S$, which we call the (relative) Rees algebra of the $\mathbb{G}_{ a,S}$-action.
Dubouloz, Adrien   +2 more
openaire   +4 more sources

Effects of Maternal Supplementation with Rare Earth Elements during Late Gestation and Lactation on Performances, Health, and Fecal Microbiota of the Sows and Their Offspring

open access: yesAnimals, 2019
The study was conducted to investigate the effects of maternal supplementation with rare earth elements (REEs) on sows and their offspring. During late gestation, 120 multiparous sows were divided randomly into the control group (Basal diet) and REE-G ...
Yi Xiong   +8 more
doaj   +1 more source

Ree geometries [PDF]

open access: yes, 2011
We introduce a rank 3 geometry for any Ree group over a not necessarily perfect field and show that its full collineation group is the automorphism group of the corresponding Ree group.
Haot, Fabienne   +2 more
core   +1 more source

Effect of Body Weight on Temperature Control and Energy Expenditure in Preterm Infants

open access: yesPediatrics and Neonatology, 2010
The purpose of this study was to compare resting energy expenditure (REE) in premature infants of different body weights during weaning from the incubator. We hypothesized that premature infants would respond to weaning from an incubator with an increase
Tzu-Hui Lei   +4 more
doaj   +1 more source

A discovery of extremely REE-rich kimberlites: A possible new type of REE-deposit

open access: yesSolid Earth Sciences, 2021
Two newly discovered Mesozoic Group II kimberlites in the southeastern margin of North China Craton show extremely high ΣREE contents (ranging from 1046 to 1869 ppm), which also higher than the nearby Weishan carbonatite and other REE-bearing rocks in ...
Qi Hou   +5 more
doaj   +1 more source

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