Next, calculate water sources based on the natural abundance of stable isotopes to quantify the water use strategy of trees. We also compared the results with the natural abundance of stable water isotopes method. The 11- and 17-year-old apple trees were taken as examples for ...
STABLE isotopesDENITRIFICATIONSOIL depthWHEATSOIL profilesSOIL dynamicsSOIL moistureTotal denitrification, the natural process capable of removing reactive N from ecosystems through conversion to N2, is one of the most poorly constrained processes in terrestrial N cycling. In situ quantification of total ...
The combined use of natural-abundance stable-isotopic analysis of bulk materials and DNA genotyping of biological materials is a highly-specific (1:1×1017) fingerprinting method for identifying such products in supply chains.JOHN P. JASPER
the observed shift to higher masses must be corrected for naturally occurring isotopes. In the absence of appropriate correction, one may make erroneous (pathway) assumptions about the fate of the tracer substrate. Therefore, it is mandatory to correct for natural stable isotope abundance prior to ...
For the glutamine flux analysis, natural abundance glutamine in the medium was completely replaced with 13C5, 15N2-glutamine (Cambridge Isotopes Laboratories, Inc.). At the end of the 12-h treatment period, an aliquot of media was collected from each flask for extracellular analysis. Cells were...
the molecular formula of the derivatized molecule or fragment ion, and (ii) calculates the natural abundance mass isotopomer distribution of the singly and multiply labeled molecule or fragment via non-linear fitting to the measured mass isotopomer distribution of the unlabeled molecule or fragment. ...
系统标签: lamprey isotopes native nutritional invasive abundance AssessingFoodNutritionalResourcesInvasiveLampreyLarvaeUsingNaturalAbundanceIsotopesTHESISPresentedPartialFulfillmentGraduateSchoolOhioStateUniversityThomasMarkEvans,B.S.GraduateProgramEvolution,Ecology,OrganismalBiologyOhioStateUniversity2012ThesisCommittee:JamesBauer...
Kr and Xe on to a charcoal trap cooled by liquid nitrogen. Residual Ar, Kr and Xe in the gaseous phase of He and Ne were removed by adsorbing them onto another charcoal trap. Because of the extremely high abundance ratios of He/Ne (>10,000), special care was taken to separate He an...