Results 1 to 10 of about 67,181 (207)

Development of 225Ac Production from Low Isotopic Dilution 229Th [PDF]

open access: yesACS Omega, 2023
Jose F. Camacaro   +11 more
doaj   +2 more sources

Research on Isotope Dilution Gamma Spectroscopy for Determining Plutonium Concentration

open access: yesYuanzineng kexue jishu, 2023
Preliminary validation of isotope dilution gamma spectroscopy (IDGS) for plutonium concentration measurement was investigated in this study. A high 239Pu abundance plutonium solution was used as an isotope dilution agent.
WANG Yan;LIU Hongbin;HE Lixia;XU Xiaoming
doaj   +1 more source

PoolDilutionR: An R package for easy optimization of isotope pool dilution calculations

open access: yesMethods in Ecology and Evolution, 2023
Isotopic pool dilution is a powerful approach to quantify gross biogeochemical transformation rates, but remains seldom used despite its potential. To facilitate broader implementation of pool dilution methods, we present a user‐friendly R package that ...
Kendalynn A. Morris   +6 more
doaj   +1 more source

13C Isotope Labelling to Follow the Flux of Photorespiratory Intermediates

open access: yesPlants, 2021
Measuring the carbon flux through metabolic pathways in intact illuminated leaves remains challenging because of, e.g., isotopic dilution by endogenous metabolites, the impossibility to reach isotopic steady state, and the occurrence of multiple pools ...
Cyril Abadie, Guillaume Tcherkez
doaj   +1 more source

Tracking sources and fate of groundwater nitrate in Kisumu City and Kano Plains, Kenya [PDF]

open access: yes, 2020
Groundwater nitrate (NO3−) pollution sources and in situ attenuation were investigated in Kisumu city and Kano plains. Samples from 62 groundwater wells consisting of shallow wells (hand dug, depth 15 m) were obtained during wet (May–July 2017) and dry ...
Boeckx, Pascal   +2 more
core   +1 more source

Levels of Alternaria Toxins in Selected Food Commodities Including Green Coffee

open access: yesToxins, 2020
Alternaria toxins are emerging mycotoxins, candidates for regulation by European Authorities. Therefore, highly sensitive, confirmatory, and reliable analytical methodologies are required for their monitoring in food. In that context, an isotope dilution
Claudia Mujahid   +6 more
doaj   +1 more source

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

On Presolar Stardust Grains from CO Classical Novae [PDF]

open access: yes, 2018
About 30% to 40% of classical novae produce dust 20-100 days after the outburst, but no presolar stardust grains from classical novae have been unambiguously identified yet.
Downen, Lori   +4 more
core   +4 more sources

Measurement of isotopically-exchangeable Zn in Zn-deficient paddy soil [PDF]

open access: yes, 2015
The changes in soil chemistry following submergence of a soil for rice production result in zinc (Zn) being immobilized in very insoluble forms. Consequently, Zn deficiency is widespread in rice crops and in human populations that subsist on rice.
Atkinson   +32 more
core   +2 more sources

Métodos de composición corporal y modelo de cuatro compartimentos en escolares obesos chilenos Methods of body composition and four compartiments model in obese school children

open access: yesNutrición Hospitalaria, 2012
Introducción: En Chile, la prevalencia de obesidad en los escolares es de 21,3%. El estudio y la intervención individual de esta malnutrición, hacen necesario contar no sólo con indicadores globales de estado nutricional, sino también, indicadores que ...
F. Vásquez   +5 more
doaj   +1 more source

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