Results 1 to 10 of about 612,314 (336)

Stable isotope probing: Technical considerations when resolving ¹⁵N-labeled RNA in gradients [PDF]

open access: yes, 2010
RNA based stable isotope probing (SIP) facilitates the detection and identification of active members of microbial populations that are involved in the assimilation of an isotopically labeled compound.
Addison, Sarah Louise   +2 more
core   +2 more sources

Effect of Organic Matter in Water Samples on the Hydrogen Stable Isotope Ratio Determination by Thermal Conversion/Elemental Analysis-Isotope Ratio Mass Spectrometry

open access: yesYankuang ceshi, 2019
BACKGROUND In the study of hydrology and water resources, the hydrogen stable isotope ratio (δ2H) of water is an important detection parameter, and its changing patterns can be used to identify and quantify the source of water, and reveal the evolution ...
HAO Xin-li   +5 more
doaj   +1 more source

Evaluating the Roles of Rainout and Post-Condensation Processes in a Landfalling Atmospheric River with Stable Isotopes in Precipitation and Water Vapor [PDF]

open access: yes, 2019
Atmospheric rivers (ARs), and frontal systems more broadly, tend to exhibit prominent “V” shapes in time series of stable isotopes in precipitation. Despite the magnitude and widespread nature of these “V” shapes, debate persists as to whether these ...
Cornwell, Gavin   +3 more
core   +1 more source

Paleoamerican diet, migration and morphology in Brazil [PDF]

open access: yes, 2011
During the early Holocene two main paleoamerican cultures thrived in Brazil: the Tradição Nordeste in the semi-desertic Sertão and the Tradição Itaparica in the high plains of the Planalto Central.
Eggers, Sabine   +3 more
core   +1 more source

25 Years authentication of wine with stable isotope analysis in the European Union – Review and outlook

open access: yesBIO Web of Conferences, 2015
The implementation of stable isotope applications in official food analyses began in 1990. At that time the first method to detect sucrose from sugar beet or sugar cane in wine by Deuterium-Nuclear Magnetic Resonance (2H-NMR) of ethanol, also known as ...
Christoph Norbert   +2 more
doaj   +1 more source

Oxygen Kinetic Isotope Effects in the Thermal Decomposition and Reduction of Ammonium Diuranate

open access: yesACS Omega, 2021
Michael R. Klosterman   +5 more
doaj   +1 more source

Chlorine and Bromine Isotope Fractionation of Halogenated Organic Pollutants on Gas Chromatography Columns

open access: yes, 2017
Compound-specific chlorine/bromine isotope analysis (CSIA-Cl/Br) has become a useful approach for degradation pathway investigation and source appointment of halogenated organic pollutants (HOPs).
Fan, Yujuan   +5 more
core   +1 more source

ISOTOPIC CHARACTERIZATION OF ORGANIC MATERIALS LEACHED FROM LEAVES IN WATER OF MUNDARING WEIR DAM

open access: yesIndonesian Journal of Chemistry, 2010
This study examined the organic constituents aquatically leached from leaf components of two tree species (wandoo eucalyptus and pinus radiate). In particular this study aimed to assess the stable isotope composition behaviour of dissolved organic carbon
Markus Heryanto Langsa
doaj   +1 more source

Confirmation of the Dietary Background of Beef from its Stable Isotope Signature [PDF]

open access: yes, 2009
End of project reportConsumers are increasingly demanding information on the authenticity and source of the food they purchase. Molecular DNA-based technology allows animal identification, but without certification or a “paper-trail” but does not provide
Bahar, Bojlul   +5 more
core  

The s-process nucleosynthesis in massive stars: current status and uncertainties due to convective overshooting [PDF]

open access: yes, 2012
Context: It is well known that the so-called s-process is responsible for the production of neutron-rich trans-iron elements, that form the bulk of the "heavy nuclides" (i.e.
Pumo, M. L.
core   +3 more sources

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