Results 61 to 70 of about 9,350 (193)

Europium Tricyclopentadienide

Zeitschrift für Naturforschung B, 1966
Europium tricyclopentadienide has been prepared by the reaction of dichloroeuropium cyclopentadienide with two equivalents of sodium dicyclopentadienide as well as by the reaction of europium trichloride with three equivalents of sodium cyclopentadienide, both reactions taking place in tetrahydrofuran. It is stable in vacuum at temperatures up to 70°C.
Minoru Tsutsui, Toshio Takino, Donald Lorenz   +2 more
openaire   +1 more source

Hydrochem, an Integrated R Package for the Analysis and Visualization of Hydrochemical Data

Groundwater, EarlyView.
We present hydrochem, an open‐source R package that simplifies hydrochemical data analysis through reproducible workflows, automated calculations, and advanced visualization tools. It enables flexible and reliable interpretation of complex water chemistry datasets, supporting researchers and practitioners in groundwater quality assessment and resource ...
Guillaume Cinkus, Raphaël Bondu
wiley   +1 more source

Electroluminescence of new coordination compounds of europium ions with β-diketones, acetic and butyric acids [PDF]

Научно-технический вестник информационных технологий, механики и оптики
In this work, organic light-emitting LEDs based on Eu3+ coordination compounds with β-diketones and acetic and butyric acids were created and studied.
Anna V. Osadchenko, Sergey A. Ambrozevich, Ivan A. Zakharchuk, Andrey A. Vashchenko, Daniil S. Daibagya, Alexandr V. Ryzhov, Dmitry N. Pevtsov, Nikolai V. Pevtsov, Alexandr S. Selyukov   +8 more
doaj   +1 more source

Siliceous sponges or seawater as a silicon source? Tracing silicon burial pathways of the Upper Cretaceous opal‐CT deposits using δ30Si and δ7Li

Sedimentology, EarlyView.
ABSTRACT Classical models of formation of sedimentary siliceous rocks (flint, chert, opoka) commonly assume that the Cretaceous marine silicon (Si) cycle was primarily biologically controlled, broadly analogous to the modern ocean. In this framework, siliceous sponges are regarded as the principal source of dissolved silica (dSi) to sediment porewaters,
Agata Jurkowska, Ewa Świerczewska‐Gładysz, Marek Szczerba, Tomáš Magna, Szymon Kowalik Filipowicz   +4 more
wiley   +1 more source

Spectral properties of hybrid associates of colloidal quantum dots Zn0.5Cd0.5S, europium tenoyltrifluoroacetonate and methylene blue

EPJ Web of Conferences, 2018
Hybrid associates formed from colloidal Zn0.5Cd0.5S quantum dots, passivated with thioglycolic acid, europium tenoyltrioteracetonate and methylene blue molecules, absorption, luminescence, IR and time-resolved spectroscopy technique are studied.
Smirnov Mikhail S., Perepelitsa Aleksey S., Kondratenko Tamara S., Zvyagin Andrey I., Ovchinnikov Oleg V.   +4 more
doaj   +1 more source

Rare Earth Element Potential in the Araí Rift Metavolcanic, Central Brazil: Gamma‐Ray Signatures, Mineralogy and Exploration Implications

Terra Nova, EarlyView.
ABSTRACT Although central Brazil hosts significant ion‐adsorption rare earth element (REE) deposits associated with A‐type granites, their coeval volcanic counterparts have been largely overlooked as exploration targets. This study demonstrates that acidic metavolcanic rocks of the Araí Group share strong radiometric, geochemical and mineralogical ...
Yuri Ribeiro, Nilson Francisquini Botelho, Valmir da Silva Souza, Diego Guilherme da Costa Gomes   +3 more
wiley   +1 more source

Dielectric relaxation studies of Eu3+ doped graphene oxide nano layers

Discover Materials
A bulk of graphene oxide nanosheets was prepared using the modified Hummers’ method. Rare earth materials, such as europium nitrate pentahydrate compounds, are added to graphene oxide in varying percentages to study the dielectric behavior of graphene ...
Nikhila Ann Abraham, I. Dhanya, Sreejith K. Pisharady   +2 more
doaj   +1 more source

Machine Learning–Assisted Fluorescent Eu@ZnMOF for the Enoxacin and Glyphosate Detection in Food by Suppressing Sensitization and Ligand–Metal Charge Transfer

Food Frontiers, Volume 7, Issue 6, November 2026.
A novel bimetallic metal‐organic framework (MOF) were designed as a ratiometric fluorescent sensor for the simultaneous monitoring of enoxacin and glyphosate with smartphone imaging and machine learning algorithms. ABSTRACT The antibiotics and pesticides in the ecosystem environment, owing to their extensive application in veterinary medicine and ...
Ze Li, Yan Man, Qingju Liu, Jilong Han, Zhikun Zhang   +4 more
wiley   +1 more source

Brain Clearance of Contrast Agent in Intravenous DCE‐MRI Is Measurable and Cannot Be Explained by Clearance Across the BBB Alone

Magnetic Resonance in Medicine, Volume 96, Issue 5, Page 2309-2320, November 2026.
ABSTRACT Purpose To determine the feasibility of measuring brain clearance of gadolinium contrast agent using standard intravenous DCE‐MRI acquisitions and evaluate the contribution of blood–brain barrier (BBB) and non‐BBB clearance routes. Methods Uptake and extended Tofts models were fit to DCE‐MRI data from people with Parkinson's disease, post ...
Martin Kozár, Ioana‐Emilia Mosneag, Sarah Al‐Bachari, Igor Chernyavsky, Geoff J. M. Parker, Hervé Boutin, Laura M. Parkes, Ingo Schiessl, Ben R. Dickie   +8 more
wiley   +1 more source

Beyond Canonical CO Oxidation: Structural and Evolutionary Insights Into a Non‐Canonical Carbon Monoxide Dehydrogenase

Angewandte Chemie, Volume 138, Issue 39, 21 September 2026.
Clade B carbon monoxide dehydrogenases (CODHs) remain enigmatic, diverging from canonical CODHs in structure and function. Here, we present the first characterization of Ruminococcus flavefaciens CODH (RfCODH), revealing occluded substrate pathways and attenuated CO oxidation activity.
Maximilian Böhm, Vivek Srinivas, Benjamin Wiseman, Ping Huang, Moritz Senger, Martin Högbom, Henrik Land   +6 more
wiley   +2 more sources