Results 11 to 20 of about 831,647 (217)

Quantifying phosphorus fertilizer distribution and the contribution of fertilizer and soil legacy phosphorus to phosphorus uptake by maize – A 32P‐labelling study

open access: yesFood and Energy Security, 2023
The availability of phosphorus (P) fertilizer applied to soil can diminish rapidly because of the complex soil P immobilization processes. However, the quantitative distribution of fertilizer P in the soil P fractions is not fully understood.
Dongfang Zheng   +5 more
doaj   +1 more source

Blank Correction in Isotope Dilution

open access: yesAnalytical Chemistry, 2015
A novel method for compensation of the procedural blank in isotope dilution is presented. This method, entitled "blank-matching", copes with the blank through experimental design. Both sample and calibration solutions are exposed to the same amount of isotopic standard and same procedural blank.
Pagliano, Enea   +2 more
openaire   +4 more sources

Isotopic Abundance and Chemical Purity Analysis of Stable Isotope Deuterium Labeled Sudan I

open access: yesJournal of Isotopes, 2014
It is important that to analysis of the isotopic abundance and chemical purity of Sudan I-D5, which is the internal standard of isotope dilution mass spectrometry.
CAI Yin-ping;LEI Wen;ZHENG Bo;DU Xiao-ning
doaj   +1 more source

Influence of Fermentation Water on Stable Isotopic D/H Ratios of Alcohol Obtained from Concentrated Grape Must

open access: yesMolecules, 2020
According to Organisation Internationale de la vigne et du vin (OIV) standards, when analysing the stable isotope ratio of deuterium to hydrogen D/H at the methyl (I) and methylene (II) site of ethanol from concentrated must, a dilution with tap water is
Matteo Perini   +4 more
doaj   +1 more source

The Potential of Isotopic Tracers for Precise and Environmentally Clean Stream Discharge Measurements

open access: yesHydrology, 2023
Accurate discharge measurement is mandatory for any hydrological study. While the “velocity” measurement method is adapted to laminar flows, the “dilution” method is more appropriate for turbulent streams.
Antoine Picard   +8 more
doaj   +1 more source

Syntheses of Labeled Dimethyl Phthalate-D6

open access: yesJournal of Isotopes, 2014
The synthesis of labeled standard dimethyl phthalate-D6,with CD3OD and benzene anhydride as raw materials by an efficient and no-dilution of isotopic enrichment method was presented, under the catalysis of condensing agent to generate dimethyl phthalate-
XU Zhong-jie;LU Wei-jing;SUN Wen;JIANG Zhe;LI Bing-yao;PAN Jie
doaj   +1 more source

The need for speed – Burnup determination of spent nuclear fuel

open access: yesTalanta Open, 2022
Here we present the application of a novel analytical approach for high-speed evaluation of burn-up in spent nuclear fuel. This automated online separation–direct analysis method, which simultaneously measures the isotopic compositions and concentrations
Benjamin D. Roach   +8 more
doaj   +1 more source

Dietary glutamine, glutamic acid and nucleotide supplementation accelerate carbon turnover (δ13C) on stomach of weaned piglets

open access: yesAnimal Nutrition, 2017
The use of stable isotope analysis as a tool for characterization of carbon turnover (δ13C) in piglet's tissues by tracing its feeding system has drawn attention.
Amanda D. Assoni   +4 more
doaj   +1 more source

Incorporation of Labeled Methionine as a Tissue Tracer in Broiler Chickens

open access: yesBrazilian Journal of Poultry Science
The objective of this study was to evaluate the process of L-methionine incorporation in the blood plasma, liver, breast muscle, and abdominal fat of 35- to 59-d-old broiler chickens using the carbon stable isotope (12C and 13C) technique for the ...
AC Stradiotti   +7 more
doaj   +1 more source

Timing carbon turnover (δ13C) in weaned piglet’s brain by IRMS

open access: yesAnais da Academia Brasileira de Ciências, 2018
Isotope-ratio mass spectrometry (IRMS) is a potential tool that provides time-integrated estimate of assimilated and not just ingested nutrients. This feature turned possible its application to evaluate the effects of dietary nucleotides and glutamate on
MAYRA A.D. SALEH   +5 more
doaj   +1 more source

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