Results 41 to 50 of about 4,593 (162)

Advances in the Characterization of Usnea barbata (L.) Weber ex F.H. Wigg from Călimani Mountains, Romania

Applied Sciences, 2022
Usnea barbata (L.) Weber ex F.H. Wigg (U. barbata) is a medicinal representative of the lichens from the Usnea genus (Parmeliaceae, lichenized Ascomycetes), containing bioactive secondary metabolites.
Violeta Popovici, Laura Bucur, Cerasela Elena Gîrd, Suzana Ioana Calcan, Elena Iulia Cucolea, Teodor Costache, Dan Rambu, Mădălina Ungureanu-Iuga, Mircea Oroian, Silvia Mironeasa, Verginica Schröder, Emma Adriana Ozon, Aureliana Caraiane, Victoria Badea   +13 more
doaj   +1 more source

Creating Value for the Montepulciano D’Abruzzo PDO Chain: A Pilot Study of Supply Chain Traceability Using Multi-Elemental and Chemometrics Analysis of Wine and Soil

Applied Sciences
This study aims to enhance the value of the Montepulciano d’Abruzzo PDO supply chain by integrating multi-elemental and isotopic profiling with chemometric analysis.
Mattia Rapa, Stefania Supino, Marco Ferrante, Ilia Rodushkin, Marcelo Enrique Conti   +4 more
doaj   +1 more source

Combined U-Pb and Lu-Hf isotope analyses by laser ablation MC-ICP-MS: methodology and applications

Anais da Academia Brasileira de Ciências, 2010
The Lutetium-Hafnium isotopic system represents one of the most innovative and powerful tools for geochronology and isotopic studies. Combined U-Pb and Lu-Hf in situ analyses on zircon by LA-MC-ICP-MS permit to characterize isotopically the host magma ...
Massimo Matteini, Elton L. Dantas, Marcio M. Pimentel, Bernhard Bühn   +3 more
doaj   +1 more source

U-Pb (ID-TIMS) geochronological method and “in-situ” SIMS zircon dating: possibilities and constrains

Литосфера, 2020
Research subject and methods. The work is based on a comparative study of the data obtained by the authors and those published in literature on U-Pb ID-TIMS and “in-situ” isotopic examination of zircons extracted from a number of Ural geological objects (
Yu. L. Ronkin, A. V. Maslov, S. Sindern
doaj   +1 more source

Isotope amount ratio measurements by MC-ICP-MS

, 2023
Titre du livre en chinois ...
Yang, Lu, He, Juan, Hou, Xiandeng, Meija, Juris, Mester, Zoltan   +4 more
openaire   +1 more source

U-Pb zircon in situ dating with LA-MC-ICP-MS using a mixed detector configuration

Anais da Academia Brasileira de Ciências, 2012
The LA-MC-ICP-MS method applied to U-Pb in situ dating is still rapidly evolving due to improvements in both lasers and ICP-MS. To test the validity and reproducibility of the method, 5 different zircon samples, including the standard Temora-2, ranging ...
Farid Chemale Jr, Koji Kawashita, Ivo A. Dussin, Janaína N. Ávila, Dayvisson Justino, Anelise Bertotti   +5 more
doaj  

Improvements in the determination of attogram-sized 231Pa in dissolved and particulate fractions of seawater via multi-collector inductively coupled plasma mass spectrometry

Progress in Earth and Planetary Science, 2023
A technique is developed to quantify the ultra-trace 231Pa (35–3904 ag) concentration in seawater using multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS). The method is a modification of the process developed by Shen et al.
Pu Zhang, Yanbin Lu, Zhe Zhang, Richard Lawrence Edwards, Robert Anderson, Phoebe Lam   +5 more
doaj   +1 more source

Emerging Analytical Techniques for Rare Earth Element Study: Basic Principles and Cutting-Edge Developments

Analytica
Fundamental research, exploration, extraction, and metallurgical studies of rare earth elements (REEs) require the use of analytical techniques. Recently, emerging developments of analytical instrumentation for REEs have taken place, with some of them ...
Heru Agung Saputra, Demas Aji, Badrut Tamam Ibnu Ali, Asranudin   +3 more
doaj   +1 more source

High Spatial Resolution U-Pb Dating of Low-Uranium Calcite Using LA-MC-ICP-MS

Yankuang ceshi
The combination of carbonate minerals with the U-Pb isotope dating system provides direct temporal constraints for geoscientific applications. LA-MC-ICP-MS with its high sensitivity and accuracy, has been successfully applied to the high spatial ...
Chenxi ZHANG, Yuxin XIONG, Jiali FU, Wei ZHAO, Lei SHU, Zengsheng LI, Jun XU, Changxiang ZHOU, Fei HONG   +8 more
doaj   +1 more source

Columbite-Group Minerals from New York Pegmatites: Insights from Isotopic and Geochemical Analyses

Geosciences, 2018
Columbite crystals from niobium-yttrium-fluorine (NYF) pegmatites lacking zircon or containing metamict cyrtolite were analyzed for major and minor elements (Electron Microprobe (EMP)), trace elements (Laser Ablation-Inductively Coupled Plasma-Mass ...
Marian V. Lupulescu, Jeffrey R. Chiarenzelli, Mark E. Pecha, Jared W. Singer, Sean P. Regan   +4 more
doaj   +1 more source