Results 121 to 130 of about 720,628 (278)

Late Holocene environmental history of Dojran, Macedonia: Investigating the interplay of imperial dynamics and climatic change

Journal of Quaternary Science, EarlyView.
ABSTRACT This study presents a high‐resolution, multi‐proxy reconstruction of environmental and land‐use change from Lake Dojran over historical times (last 2500 years), combining pollen, biomarkers, radiocarbon dating, Ottoman taxation records and other historical data.
Alessia Masi, Lucrezia Masci, Georgios C. Liakopoulos, Monica Bini, Alexander Francke, Ilaria Isola, Carlo Ricotta, Laura Sadori, Alexander Sarantis, Sławomir Sprawski, Jakub Sypiański, Irene Tunno, Cristiano Vignola, Bernd Wagner, Giovanni Zanchetta, Adam Izdebski   +15 more
wiley   +1 more source

Method for determination of 35 elements content in various samples with application of microwave digestion and inductively coupled plasma with mass spectrometry (ICP-MS)

Journal of Agriculture and Plant Sciences, 2016
Inductively coupled plasma with mass spectrometry (ICP-MS) and microwave digestion system were used as working techniques for determining the content of 35 elements (Ag, Al, As, B, Ba, Be, Bi, Ca, Cd, Co, Cr, Cs, Cu, Fe, Ga, Ge, Hg, K, Li, Mg, Mn, Mo, Na,
Biljana Balabanova, Blazo Boev, Sasa Mitrev, Violeta Ivanova-Petropulos   +3 more
doaj  

Stable isotope analysis of freshwater gastropod carbonates from Swanscombe: Insights into climate stability and seasonality during MIS 11c

Journal of Quaternary Science, EarlyView.
ABSTRACT Stable isotope analyses of freshwater mollusc carbonate can record environmental conditions at the time of mineralisation, yet this technique remains underused in British Middle Pleistocene fluvial sequences, despite the abundance of fossil shell material in these deposits.
Jennifer E. Sherriff, Ian Candy, Adrian P. Palmer, Danielle C. Schreve, Tom S. White   +4 more
wiley   +1 more source

The distribution characteristics of heavy metals and Pb isotopes in the sediments of the Fuhe River, South China: Implication for anthropogenic influences

Environmental Research Communications
Fuhe River is the second largest river that flows into Poyang Lake, the largest freshwater lake in China. With rapid socioeconomic development, heavy metal pollution in its sediments has become increasingly severe. To clarify the distribution and sources
Zheng Fangwen, Xiang Lei, Xiao Liu, Xiuying Yang, Cheng Huang, Chun Tang, Tang Linsen, Guo Xiaojuan   +7 more
doaj   +1 more source

Diffusion of Hydrogen Isotopes in Zirconium Alloys

He huaxue yu fangshe huaxue
Tritium is a common radioactive product in nuclear power plants. It is easy to diffuse, penetrate and be easily absorbed by organisms due to its small atomic radius.
Long WANG, Zhi-hao HONG, You-zhi WANG, Zi-kai LIU, Xiao-qian ZHANG, Tian-guang ZHANG, Long ZHANG   +6 more
doaj   +1 more source

Qualitative Analysis of Biogas by Raman Spectroscopy: Effect of Pressure on Major Components

Journal of Raman Spectroscopy, EarlyView.
Raman spectra of major and selected minor biogas components were studied under pressures up to 100 bar. Pressure‐induced shifts and band broadening were quantified for methane, carbon dioxide, and nitrogen, while Raman spectra of ammonia and hydrogen sulfide are presented in the context of biogas quality monitoring.
Dominik Tománek, Matouš Kuneš, Tomáš Hlinčík   +2 more
wiley   +1 more source

Shock and Cosmic-Ray Chemistry Associated with the Supernova Remnant W28

The Astrophysical Journal
Supernova remnants (SNRs) exert a strong influence on the physics and chemistry of the nearby molecular clouds through shock waves and the cosmic rays (CRs) they accelerate.
Tian-yu Tu, Yang Chen, Ping Zhou, Samar Safi-Harb, Qian-Cheng Liu   +4 more
doaj   +1 more source

Detection of Acoustic Phonons in Carbon by Raman Spectroscopy

Journal of Raman Spectroscopy, EarlyView.
Acoustic phonons in graphite and diamond are detected by Raman spectroscopy through disorder‐induced relaxation of selection rules. Comparison with calculated phonon densities of states enables assignment of the observed Raman features to acoustic phonon branches.
Konstantin Iakoubovskii, Andrey Katrusha, Weihua Peng, Jianguo Peng   +3 more
wiley   +1 more source

A systematic 15N‐amino‐acid tracer framework to identify sources of pelagic marine organic matter

Limnology and Oceanography: Methods, EarlyView.
Abstract Accurately tracing organic matter sources in marine systems remains challenging, particularly where natural and anthropogenic inputs coexist. Compound‐specific stable isotope analysis of amino acids (CSIA‐AA) offers strong potential for organic matter source discrimination, but its application is limited by the small number of validated δ15N ...
E. Cepeda, S. Bodé, P. Boeckx, J. Vanaverbeke, U. Braeckman, I. Lizaga   +5 more
wiley   +1 more source

A Rare Glimpse of Paleoproterozoic Sub‐Arc Mantle: The Ussuit Peridotite, West Greenland

Geochemistry, Geophysics, Geosystems
Mantle residues beneath Archean cratonic nuclei have been extensively studied, whereas less attention has been given to the mantle lithosphere beneath Proterozoic mobile belts that link these nuclei.
T. McIntyre, P. Waterton, L. Li, B. Gong, X. Zha, K. Szilas, D. G. Pearson   +6 more
doaj   +1 more source