Article
Chemistry, Multidisciplinary
Elissavet Dotsika, Maria Tassi, Petros Karalis, Anastasia Chrysostomou, Dimitra Ermioni Michael, Anastasia Elektra Poutouki, Katerina Theodorakopoulou, Georgios Diamantopoulos
Summary: In this article, isotopic analysis of samples from Northern Greece was conducted to reconstruct the diet and climate of the Early Iron Age. The results showed that the diet in Agras was primarily based on C3 plants, with some contributions from C4 plants and freshwater fish. The isotopic values were in good agreement with those from other sites in Northern Greece, Croatia, and Hungary.
APPLIED SCIENCES-BASEL
(2022)
Article
Multidisciplinary Sciences
Sangeeta Mahajan, Vijay Sathe, Niraj Rai, Shailesh Agrawal, Supriyo Chakraborty
Summary: This study analyzed the stable carbon and oxygen isotope compositions of tooth enamel from human remains at the Inamgaon archaeological site in the Pune district of Maharashtra, India. The analysis revealed variations in isotope ratios among individuals and across different periods, providing valuable baseline values for understanding the prehistoric context of the region. The dataset can be used for comparative investigations in future research.
Article
Physics, Fluids & Plasmas
Anders Persson
Summary: This study investigates the prospects of using emissions from a microplasma source to measure the C-13/C-12 isotope ratio in CO2. The study reveals that the visible emission spectrum can be used to quantify the abundance of C-12 and C-13 in the sample, but further improvements in precision and accuracy are needed for most scientific applications.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Aurora Grandal-d'Anglade, Silvia Albizuri, F. Javier Lopez-Cachero
Summary: The analysis of stable isotopes in bone collagen from 42 equines at the Can Roqueta site provides insight into their diet, indicating they may have been sacrificial animals used in rituals. This dataset contributes to the understanding of livestock management and paleodiet in the region and time period.
Article
Environmental Sciences
Thomas A. Langer, Kyle D. Zimmer, Brian R. Herwig, William O. Hobbs, James B. Cotner
Summary: Biogeochemistry patterns in shallow lakes are influenced by both in-lake factors and watershed-level factors. The relative importance of these factors is not well understood. A study in Minnesota, USA demonstrated that lake size had the strongest influence on fish δC-13 ratios, while all agriculture in watersheds influenced fish δN-15 ratios. Water column TN and TP concentrations were influenced by the in-lake factor of ecosystem state, with lower concentrations in the clear state. Land use did not have a significant effect on TN or TP concentrations, likely due to the masking effect of ecosystem state.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Multidisciplinary Sciences
Guo-Quan Sun, Peng Yu, Wen Zhang, Wei Zhang, Yi Wang, Li-Li Liao, Zhen Zhang, Li Li, Zhipeng Lu, Da-Gang Yu, Song Lin
Summary: Pyridines and related N-heteroarenes are commonly found in pharmaceuticals, agrochemicals and other biologically active compounds. Site-selective C-H functionalization could directly produce these medicinally active products. In this study, an electrochemical strategy using CO2 was developed for the direct carboxylation of pyridines. The choice of the electrolysis setup led to divergent site selectivity: a divided electrochemical cell resulted in C5 carboxylation, while an undivided cell promoted C4 carboxylation. The undivided-cell reaction was proposed to operate through a paired-electrolysis mechanism.
Article
Geosciences, Multidisciplinary
Xiaohong Lv, Lin Ban, Yiwen Liu, Ying Guan, Hailin Liu, Chunxue Wang, Liangliang Hou
Summary: This study analyzed stable isotopes in animal bones from the Changshan site in China to investigate long-term domestic animal management strategies in the East Liao River Basin. The results revealed that the management and feeding strategies for domestic pigs were relatively stable, with pigs having free range in a wild ecosystem over a long period of time.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Physics, Nuclear
Qing Zhao, Masaaki Kimura, Bo Zhou, Seung-heon Shin
Summary: The alpha clustering in 10Be and 12Be has been studied using the real-time evolution method (REM), with improvements made to obtain more accurate clustering results.
Article
Environmental Sciences
Joseph K. Fackrell, Tamara E. C. Kraus, Megan B. Young, Carol Kendall, Sara Peek
Summary: River deltas are increasingly impacted by human inputs of nitrogen, which can lead to harmful phenomena. A study on the Sacramento-San Joaquin Delta in California used a multi-tracer approach to examine nitrogen sources and processes. Results showed that the Sacramento River and its distributaries primarily received nitrogen in the form of NH4+ from treated wastewater effluent, and there were significant biogeochemical processes that affected the downstream transport of nitrogen. The study also highlighted the diversity in nitrogen dynamics and the utility of a multi-tracer approach in complex river delta environments.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Organic
Won An, Suk Hun Lee, Dayoung Kim, Harin Oh, Suho Kim, Youjung Byun, Hyun Jin Kim, Neeraj Kumar Mishra, In Su Kim
Summary: The site-selective modification of quinolines and their analogs using rhodium(III) catalysis has led to the synthesis of bioactive succinimide-containing quinoline derivatives with high tolerance to functional groups.
JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Chemistry, Applied
Philippe Tixier, Denis Loeillet, Mathieu Coulis, Thierry Lescot, Luc de Lapeyre de Bellaire
Summary: With the increasing production of organic bananas, it is crucial to monitor compliance with organic specifications. This study found that the delta N-15 values of organic bananas were significantly higher than conventional ones at farms around the world, while the type of fertilization did not significantly affect delta C-13 values.
Article
Geography, Physical
Luciano Varela, Lucia Clavijo, P. Sebastian Tambusso, Richard A. Farina
Summary: Stable isotope analysis is a valuable tool for understanding the paleoecology and paleodiet of fossil mammals. By studying the stable isotope composition of fossil bones from a site in southern Uruguay, researchers found that the herbivorous species in the area consumed a high proportion of C-3 plants, indicating a dry environment. The results also suggest niche partitioning among different species.
QUATERNARY SCIENCE REVIEWS
(2023)
Article
Soil Science
Guangyu Zhu, Zhouping Shangguan, Lei Deng
Summary: In this study, the dynamics of soil aggregate associated organic carbon (OC) following temperate natural forest development in China were investigated. It was found that different soil depths showed varying trends in OC changes, and factors such as land use change, soil particle characteristics, plant diversity, and C:N ratio had significant impacts on SOC stocks, rate of total SOC increase, and decomposition rate constants.
SOIL & TILLAGE RESEARCH
(2021)
Article
Geography, Physical
Ivan Ramirez-Pedraza, Florent Rivals, Carlos Tornero, Denis Geraads, Jean Paul Raynal, David Lefevre, Abderrahim Mohib
Summary: This study reconstructs the climate, diet, and habitat of Plio-Pleistocene herbivores at the Ahl al Oughlam site in western Morocco using stable isotope analyses, dental wear analysis, and other methods. The results suggest that the analyzed species predominantly consumed C3 plants, but had a varied diet with evidence for both browsing and grazing behavior. The study indicates that the area was dominated by open C3 grasslands in an arid climate.
QUATERNARY SCIENCE REVIEWS
(2023)
Article
Anthropology
Veronika Zacherl, Gisela Grupe, Andrea Goehring
Summary: Stable isotope analysis is a routine method in archaeometry, and cluster analysis is superior to traditional evaluations in detecting multidimensional similarities among isotopic signatures. This study reevaluates previously published isotopic datasets from early medieval skeletal finds in Upper Bavaria, Germany, using Gaussian Mixture Model clustering to demonstrate its potential for paleodiet reconstruction.
ANTHROPOLOGISCHER ANZEIGER
(2023)