Results 71 to 80 of about 547,241 (288)

Strontium isotopic record of signatures of Holocene fluvial sediments in the Loire valley, France [PDF]

Hydrology and Earth System Sciences, 2002
The distribution of Sr contents and isotopes of strontium Sr in the labile fraction of sediments from a channel fillings infill in the Middle Loire alluvial plain is used to highlight aspects of the evolution of the basin over the period from 10 000 yr ...
P. Négrel, P. Négrel, W. Kloppman, M. Garcin, D. Giot   +4 more
doaj  

Sr-Nd ISOTOPES IN MOSSES FROM ROMAGNA (ITALY) AND THEIR ENVIRONMENTAL SIGNIFICANCE

EQA, 2010
Sr-Nd isotopes were applied for the first time to the study of several moss samples from a transect stretching through Romagna from the Apennines to the Adriatic sea coast.
Francesca Castorina, Umberto Masi
doaj   +1 more source

Heavy iron isotopes in arc rocks reveal anoxic sediment recycling in subduction zones

Communications Earth & Environment
The formation mechanism of arc mafic rocks with heavy iron isotope signature remains enigmatic. Here we report Fe-Mo-Sr-Nd-Hf isotope data of arc rocks from Northeast China. The studied arc rocks have δ56Fe values (0.08‰ to 0.23‰) comparable to or higher
Zhigang Wang, Li-Qun Dai, Zi-Fu Zhao, Li-Tao Ma, Wei Fang, Xing-Mian Hu   +5 more
doaj   +1 more source

Evaluation of the Strontium Isotope Ratios in Soil–Plant–Fruit: A Comprehensive Study on Vignola Cherry (Ciliegia di Vignola PGI)

Foods
This study investigates the potential of strontium isotopes as a geographical tracer for Vignola cherries. Despite several studies having employed this indicator to trace the origin of food products, the mechanisms underlying the fractionation and ...
Lisa Lancellotti, Veronica D’Eusanio, Daniela Manzini, Caterina Durante, Andrea Marchetti, Lorenzo Tassi   +5 more
doaj   +1 more source

Analytical procedures for determining Pb and Sr isotopic compositions in water samples by ID-TIMS

Química Nova, 2008
Few articles deal with lead and strontium isotopic analysis of water samples. The aim of this study was to define the chemical procedures for Pb and Sr isotopic analyses of groundwater samples from an urban sedimentary aquifer.
Veridiana Martins, Marly Babinski, Izabel Ruiz, Kei Sato, Solange Souza, Ricardo Hirata   +5 more
doaj   +1 more source

Implication of in situ Sr Isotope of Scheelite for Tungsten Mineralization: A Case Study of the Nanyangtian Scheelite Deposit, Southeast Yunnan, China

Yankuang ceshi, 2020
BACKGROUND The Nanyangtian scheelite deposit is an important skarn scheelite deposit in Yunnan Province, which is located in Laojunshan W-Sn deposit area, Southeast Yunnan.
WANG Zhong-qiang, LI Chao, ZHANG Ding-cai, JIANG Xiao-jun, ZHOU Li-min, YAN Qing-gao   +5 more
doaj   +1 more source

Inter‐ and intraspecific variation in theropod dinosaur dental microwear and its palaeoecological implications

The Anatomical Record, EarlyView.
Abstract Differences in skull and tooth morphology, stomach contents, and estimated bite force between medium‐to‐large sized (≥100 kg) predatory theropod dinosaurs have long been suspected to correlate with differences in their diets and dietary guilds (e.g., hypercarnivory, piscivory).
Cassius Morrison, James Gregory, Christopher Jackson, Jordan Bestwick, Katlin Schroeder, Samuel J.L. Gascoigne, Paul Bills, Laura B. Porro, Philip D. Mannion, Paul M. Barrett   +9 more
wiley   +1 more source

Determination of total strontium in uruguayan rice by inductively coupled plasma optical emission spectrometry (ICP-OES)

Innotec, 2011
Strontium (Sr) is found naturally as a non-radioactive element and has 16 known isotopes. Naturally occurring Sr is found as four stable isotopes: Sr-84, -86, -87, and -88. Twelve other isotopes are radioactive.
Mario E. Rivero Huguet, Elena Darre
doaj  

MicroCT reinvestigation of the only articulated fossil anostomid fish reveals synonymy of Arhinolemur Ameghino, 1898 and Megaleporinus Ramirez et al., 2017

The Anatomical Record, EarlyView.
Abstract Arhinolemur scalabrinii† Ameghino, 1898 was originally described as a strepsirrhine primate (Mammalia) but has been recognized as an anostomid fish since 2012. It remains the only extinct anostomid species known from complete cranial material.
Karen M. Panzeri, Humberto L. Andrelino, Sergio Bogan, José P. O'Gorman, Federico Agnolín, Brian L. Sidlauskas, Nahuel Vega, Agustín G. Martinelli, José L. Birindelli   +8 more
wiley   +1 more source

Dual‐Function Electrocatalysis: Simultaneous Wastewater Remediation and Hydrogen Evolution—A Comprehensive Review

Carbon Energy, EarlyView.
Replacing the oxygen evolution reaction with the electro‐oxidation of pollutants and waste streams offers an energy‐efficient route for simultaneous hydrogen production and pollutant remediation. This review summarizes the reaction mechanisms, catalyst design principles, and emerging paired‐electrolysis strategies that govern activity, selectivity ...
Safa Al‐Yahyaey, Rashid Al‐Hajri, Ala'a H. Al‐Muhtaseb, Hussein A. Younus, Mohammed Al‐Abri   +4 more
wiley   +1 more source