Results 11 to 20 of about 139,467 (313)

Controls of H2S, Fe2 +, and Mn2 + on Microbial NO3–-Reducing Processes in Sediments of an Eutrophic Lake

Frontiers in Microbiology, 2020
Understanding the biogeochemical controls on the partitioning between nitrogen (N) removal through denitrification and anaerobic ammonium oxidation (anammox), and N recycling via dissimilatory nitrate (NO3–) reduction to ammonium (DNRA) is crucial for ...
Adeline N. Y. Cojean, Moritz F. Lehmann, Elizabeth K. Robertson, Bo Thamdrup, Jakob Zopfi   +4 more
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Nitrite isotope characteristics and associated soil N transformations

Scientific Reports, 2021
Nitrite (NO2 −) is a crucial compound in the N soil cycle. As an intermediate of nearly all N transformations, its isotopic signature may provide precious information on the active pathways and processes.
Dominika Lewicka-Szczebak, Anne Jansen-Willems, Christoph Müller, Jens Dyckmans, Reinhard Well   +4 more
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Expanding the Isotopic Toolbox to Track Monarch Butterfly (Danaus plexippus) Origins and Migration: On the Utility of Stable Oxygen Isotope (δ18O) Measurements

Frontiers in Ecology and Evolution, 2019
The measurement of naturally occurring stable hydrogen (δ2H) and carbon (δ13C) isotopes in wings of the eastern North American monarch butterflies (Danaus plexippus) have proven useful to infer natal origins of individuals overwintering in Mexico.
Keith A. Hobson, Keith A. Hobson, Kevin J. Kardynal, Geoff Koehler   +3 more
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Response of Bacterial and Fungal Soil Communities to Chinese Fir (Cunninghamia lanceolate) Long-Term Monoculture Plantations

Frontiers in Microbiology, 2020
Successive rotation and monoculture, as common silvicultural practices, are extensively applied worldwide, particularly in subtropical Chinese fir (Cunninghamia lanceolata) plantations in southern China.
Xian Liu, Yuzhe Wang, Yuhui Liu, Hui Chen, Yalin Hu   +4 more
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δ13C and δ18O Stable Isotope Analysis Applied to Detect Technological Variations and Weathering Processes of Ancient Lime and Hydraulic Mortars

Geosciences, 2018
Samples of mortars were collected from lime and hydraulic mortars affected by environmental degradation. A total of 63 samples were obtained from Hellenistic, Late Roman and Byzantine historic constructions located at Kavala, Drama and Makrygialos in ...
Elissavet Dotsika, Dafni Kyropoulou, Vassilios Christaras, Georgios Diamantopoulos   +3 more
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Determination of Isotopic Abundance of 15N-Labeled Amino Acids in Tea

Journal of Isotopes, 2020
A method for determination alanine, serine, glutamic acid, asparagine, theanine, glutamine in tea leaves by MSTFA derivatization has been established. And six amino acids were detected successfully.
HOU Jie;ZHANG Pengshuai;HOU Jinghua;LEI Wen;DU Xiaoning
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Chemical Analysis Suggesting Origin of Raw Materials and Possible Recycling of Late Antique Roman Glass from Vasileos Irakleiou Street 45, Thessaloniki in Northern Greece

Applied Sciences, 2022
During antiquity, it is known that glass was produced in specialized primary workshops in Levant and Egypt, and this glass was melted and formed into objects in secondary workshops, and distributed in most cities and towns of the Roman Empire.
Petros Karalis, Elissavet Dotsika, Athanasios Godelitsas, Anastasios Antonaras, Anastasia Elektra Poutouki, Maria Tassi   +5 more
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Microbial carbon recycling – an underestimated process controlling soil carbon dynamics – Part 1: A long-term laboratory incubation experiment [PDF]

Biogeosciences, 2015
Independent of its chemical structure carbon (C) persists in soil for several decades, controlled by stabilization and recycling. To disentangle the importance of the two factors on the turnover dynamics of soil sugars, an important compound of soil ...
A. Basler, M. Dippold, M. Helfrich, J. Dyckmans   +3 more
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Establishment of a Greek Food Database for Palaeodiet Reconstruction: Case Study of Human and Fauna Remains from Neolithic to Late Bronze Age from Greece

Geosciences, 2019
We review the stable isotopic data of recovered Greek bones from the Early Neolithic to the Late Bronze period in order to examine dietary changes over time. As an isotopic baseline we use the published fauna data of the periods.
Elissavet Dotsika, Georgios Diamantopoulos, Spyridon Lykoudis, Sofia Gougoura, Elena Kranioti, Petros Karalis, Dimitra Michael, Eleni Samartzidou, Emmanouil Palaigeorgiou   +8 more
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Synthesis of Isotope Labeled Protocatechuic Acid-(13COOH)

Journal of Isotopes, 2020
A novel synthesis method of protocatechuic acid-(13COOH) was designed. 3,4-dimethoxy bromobenzene as raw material, Grignard reagent was prepared by Grignard reaction, then passed through the 13C labeled 13CO2 gas, the intermediate 3,4-dimethoxy benzoic ...
XU Jianfei;LIU Zhanfeng;LU Weijing;LEI Wen;HOU Jie;DU Xiaoning
doaj   +1 more source