Results 21 to 30 of about 38,293 (305)

Geochemical Discrimination of Monazite Source Rock Based on Machine Learning Techniques and Multinomial Logistic Regression Analysis

Geosciences, 2020
Detrital monazite geochronology has been used in provenance studies. However, there are complexities in the interpretation of age spectra due to their wide occurrence in both igneous and metamorphic rocks. We use the multinomial logistic regression (MLR)
Keita Itano, Kenta Ueki, Tsuyoshi Iizuka, Tatsu Kuwatani   +3 more
doaj   +1 more source

New deltahedral architectures of rhodium-mediated Pn73− (Pn = Sb and Bi) cages

Nano Research
The reactions of K5Pn4 (Pn = Sb and Bi) and CpRh(PPh3)2 (Cp = C5H5, cyclopentadiene) in ethylenediamine (en) solutions resulted in a series of new Pn73− adducts, {Pn8[Rh(PPh3)]2}2−, {Sb7[Rh(PPh3)]2}2−, and {Sb7[Rh(PPh3)]3}2−, through slight variations in
Lei Qiao, Chuan-Ling Chen, Zhong-Ming Sun   +2 more
doaj   +1 more source

Palaeoenvironmental signatures revealed from rare earth element (REE) compositions of vertebrate microremains of the Vesiku Bone Bed (Homerian, Wenlock), Saaremaa Island, Estonia

, 2015
The Estonian Journal of Earth Sciences is an open access journal and applies the Creative Commons Attribution 4.0 International License CC BY to all its papers (http://creativecommons.org/licenses/by/4.0/).
Alberto Pérez-Huerta, Zigaite, Z, Jeffries, T, Fadel, A, Ahlberg, PE, Alexandre Fadel, Živilė Žigaitė, Teresa Jeffries, Henning Blom, Perez-Huerta, A, Blom, H, Tiiu Märss, Maersse, T, Per Erik Ahlberg   +13 more
core   +1 more source

Synthesis, characterization, and electrochemical properties of rare earth element nanoparticles and its application in electrochemical nanosensor for the detection of various biomolecules and hazardous compounds: A review

Sensing and Bio-Sensing Research, 2023
The utilization of nanoparticles of rare earth elements (REEs) has gained considerable interest and represents an advancement over micron-sized rare earth materials due to the distinct quantum properties exhibited by nanoparticles.
Nur Azizah Ferdiana, Husein Hernandi Bahti, Dikdik Kurnia, Santhy Wyantuti   +3 more
doaj   +1 more source

Research progress on the distribution and occurrence characteristics of rare earth elements in coal and coal-fired products

Meitan kexue jishu
Rare earth elements are widely used in permanent magnet, metallurgy, hydrogen storage materials and other fields due to their special properties, and their consumption is increasing year by year.
Yanyang XING, Hua DING, Xiangfei BAI, Jin HE   +3 more
doaj   +1 more source

Geochemical and Tectonic Setting of Trachyte rock withinAvromanCarbonite Formation, Zagros Suture Zone,Kurdistan Region/ Northeastern Iraq. [PDF]

Kirkuk Journal of Science, 2018
Trachyte extrusion rocks exposed as dyke cutting Avroman carbonate formation that is part of northwestern Zagros suture zone.Petrographical study combined with EMPA study reveals that these trachyte rock composed of essentially Plagioclase and ...
Sabah Ismail, Shleer Abdul-Qadir
doaj   +1 more source

Partitioning of Ca to metastable precipitates in a Mg-rare earth alloy

Materials Research Letters, 2023
The potential effect of the element Ca on the precipitation behavior was investigated in an Mg-rare earth alloy. A combination of metastable β′′′ and β′ precipitates was observed for the peak aging condition at 200°C.
Qianying Shi, Anirudh Raju Natarajan, Anton Van der Ven, John Allison   +3 more
doaj   +1 more source

Heterogeneity in the Global Practice of Central Nervous System Staging in Pediatric Acute Lymphoblastic Leukemia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Central nervous system (CNS) involvement in childhood acute lymphoblastic leukemia (ALL) is assessed by cell counting and cytomorphology from cerebrospinal fluid (CSF) and is used for treatment stratification worldwide. The ratio of “CNS2” patients in clinical trials ranges from 3% to 40%, with unclear prognostic significance ...
Laura Almási, Bernadett Borbála Huszti, Gábor Barna, Marko Kavcic, Janez Jazbec, Lennart Lenk, Vera Münch, Sophia Polychronopoulou, Ágnes Márk, Maria Thastrup, Lüder H. Meyer, Kjeld Schmiegelow, Cornelia Eckert, Christina Halsey, Dániel J. Erdélyi   +14 more
wiley   +1 more source

Online preconcentration ICP-MS analysis of rare earth elements in seawater

, 2012
The rare earth elements (REEs) with their systematically varying properties are powerful tracers of continental inputs, particle scavenging intensity and the oxidation state of seawater.
Stichel, Torben, Haley, Brian, Zieringer, Moritz, Hathorne, Ed C., Grasse, Patricia, Frank, Martin   +5 more
core   +1 more source

Rare Earth Element Deposits of Alkaline Igneous Rocks

Resources, 2017
Alkaline igneous complexes host deposits of rare earth elements (REE), which represent one of the most economically important resources of heavy REE and Yttrium (Y).
Jaroslav Dostal
doaj   +1 more source