Results 1 to 10 of about 486,624 (356)
COMPARATIVE BORON ISOTOPIC ANALYSIS [PDF]
, 1961 S>Surface ionization results for natural boron isotopic analysis are in agreement with other recent investigations indicating a B/sup 11//B/sup 10/ atom ratio nesrer to 4.00 than the more commonly accepted value of 4.31 based on BF/ sub 3/ analysis. (auth)
P. Goris, Tonya Morgan, R.A. Nielsen
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Ethics and applications of isotope analysis in archaeology. [PDF]
Am J Biol AnthropolAbstractThis synthesis explores specific ethical questions that commonly arise in isotopic analysis. For more than four decades, isotope analysis has been employed in archeological studies to explore past human and animal dietary habits, mobility patterns, and the environment in which a human or animal inhabited during life.
Stantis C +10 more
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Frontiers in Environmental Science, 2023 The temporal dynamics of 33 major, trace, and rare earth elements (REEs) were studied in the litter samples containing Swedish Norway spruce (Picea abies) (NSL) and Scots pine (Pinus sylvestris) (SPL), with the aim to assess their release and ...
Mukesh K. Gautam +5 more
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The 15N gas-flux method to determine N2 flux: a comparison of different tracer addition approaches [PDF]
SOIL, 2020 The 15N gas-flux method allows for the quantification of N2 flux and tracing soil N transformations. An important requirement for this method is a homogeneous distribution of the 15N tracer added to soil.
D. Lewicka-Szczebak, R. Well
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Frontiers in Ecology and Evolution, 2022 The chemical analysis of animal bones from ancient sites has become a common approach in archeological research investigating animal utilization and domestication by past humans.
Yu Itahashi
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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 +4 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 +3 more
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Microbial carbon recycling: an underestimated process controlling soil carbon dynamics – Part 2: A C3-C4 vegetation change field labelling experiment [PDF]
Biogeosciences, 2015 The mean residence times (MRT) of different compound classes of soil organic matter (SOM) do not match their inherent recalcitrance to decomposition. One reason for this is the stabilization within the soil matrix, but recycling, i.e.
A. Basler +3 more
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Water Supply, 2022 The present study focuses on the shallow phreatic aquifer (SA) and the upper confined aquifer (CA) developed in Cenozoic loose strata, which are the major regional groundwater resources for drinking, irrigation, industry and other water-related ...
Jie Ma +3 more
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Diversity of management strategies in Mesoamerican turkeys: archaeological, isotopic and genetic evidence [PDF]
Royal Society Open Science, 2018 The turkey (Meleagris gallopavo) represents one of the few domestic animals of the New World. While current research points to distinct domestication centres in the Southwest USA and Mesoamerica, several questions regarding the number of progenitor ...
Aurelie Manin +7 more
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