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  • copper
  • Previous research has shown that the accuracy of tracking origin is dramatically improved by using a combination of elements impacted by the environmental conditions (i.e., hydrogen, oxygen, nitrogen, sulfur) and elements impacted by the geological conditions of the site (i.e., iron, copper, zinc). (hardwoodfloorsmag.com)
  • natural
  • More recently, scientists have been exploring the potential to use the natural variability in stable isotopes by region to determine geographic origin of natural materials, including wood products. (hardwoodfloorsmag.com)
  • 2018
  • Nechaeva D, Shishov A, Ermakov S, Bulatov A (2018) A paper-based analytical device for the determination of hydrogen sulfide in fuel oils based on headspace liquid-phase microextraction and cyclic voltammetry. (springer.com)
  • Song Z-L, Dai X, Li M, Teng H, Song Z, Xie D, Luo X (2018) Biodegradable nanoprobe based on MnO2 nanoflowers and graphene quantum dots for near infrared fluorescence imaging of glutathione in living cells. (springer.com)
  • Feng X, Ashley J, Zhou T, Sun Y (2018) Fluorometric determination of doxycycline based on the use of carbon quantum dots incorporated into a molecularly imprinted polymer. (springer.com)
  • isotopic
  • Recent research performed on volunteers and patients suggested that diet, health, and basal metabolic rates (BMR) are factors controlling the bodily Zn isotope compositions (isotopic homeostasis). (rsc.org)
  • However, our poor understanding of the variability of Zn distribution among the different organs and fluids of the human body, and the ensuing isotope fractionation, limits the use of this isotopic system as a typical diagnostic tool for cancers and for past hominin diet reconstructions. (rsc.org)
  • Stable isotopic profiling has long permitted sensitive investigations of the metabolic consequences of genetic mutations and/or pharmacologic therapies in cellular and mammalian models. (jove.com)
  • Here, we describe detailed methods to perform stable isotopic profiling of intermediary metabolism and metabolic flux in the nematode, Caenorhabditis elegans . (jove.com)
  • Universally labeled 13 C-glucose or 1,6- 13 C 2 -glucose is utilized as the stable isotopic precursor whose labeled carbon is traced by mass spectrometry in carbon dioxide (both atmospheric and dissolved) as well as in metabolites indicative of flux through glycolysis, pyruvate metabolism, and the tricarboxylic acid cycle. (jove.com)
  • Representative results are included to demonstrate effects of isotope exposure time, various bacterial clearing protocols, and alternative worm disruption methods in wild-type nematodes, as well as the relative extent of isotopic incorporation in mitochondrial complex III mutant worms ( isp-1(qm150) ) relative to wild-type worms. (jove.com)
  • Application of stable isotopic profiling in living nematodes provides a novel capacity to investigate at the whole animal level real-time metabolic alterations that are caused by individual genetic disorders and/or pharmacologic therapies. (jove.com)
  • This technique is based on isotopic labeling, whereby microbes are fed with a 13 C labeled substrates. (jove.com)
  • However, a careful inspection of our understanding of the fluxes of water isotopes between leaves and the atmosphere under high humidity conditions shows that there can clearly be isotopic exchange between the two pools even in the absence of a change in the mass of water in the leaf. (bioportfolio.com)
  • Studies that rely on stable isotopes of water as a means of studying plant water use, particularly with respect to foliar water uptake, must consider the effects of these isotopic exchange processes. (bioportfolio.com)
  • Metabolism
  • Much of his group's pioneering work was on the use of stable isotope probes such as 15N, 2H, 18O and 13C for the study of nitrogen metabolism in premature infants and in children with burns as well as for determining quantitative amino-acid needs in older individuals. (danoneinstitute.org)
  • ratio
  • The presence of H. pylori infection will be diagnosed using the [13C] Urea Breath Test (UBT), which is based on the collection of breath samples that are analyzed for the ratio of 13CO2/12CO2 using isotope ratio mass spectrometry (IRMS) or non-dispersive infrared spectrometry (NDIRS). (iaea.org)
  • 2002
  • 2002) to document these Zn isotope signatures focused on mammal organs with further primary research focusing on humans by Helal et al. (rsc.org)
  • composition
  • When applied to the δ 66 Zn measured in blood, bones, or teeth, the present box model also offers insight into the isotope composition of the human diet, and therefore into its nature. (rsc.org)
  • The study of Zn isotope composition in body tissues is rapidly expanding and its fate is connected to the recent development of TIMS and MC-ICPMS techniques. (rsc.org)
  • atomic
  • First, the raw intensity of the zinc atomic emissions must be combined with emission intensities from other fingernail elements in order to generate an accurate, ratiometric measurement of fingernail zinc. (grantome.com)
  • Isotopes are two forms of an element with the same atomic number but different mass number . (encyclopedia.com)
  • dietary
  • The Significance of our invention is that it will facilitate detection and informed-remediation of dietary zinc deficiecy. (grantome.com)
  • magnesium
  • Objective #2: Assess the absorption of magnesium and zinc in healthy children 4 to 8 yrs of age. (clinicaltrials.gov)
  • Allied Metal is a responsive and progressive organization - a dependable, efficient and quality-oriented business partner for aluminum, zinc, magnesium and silicon consumers and sellers. (azom.com)
  • variations
  • Despite their limited number, they already highlight the great potential of Zn isotope variations to detect breast cancers based on blood values and to reconstruct past hominin diets using dental enamel data. (rsc.org)
  • prevalence
  • Small-quantity lipid-based nutrient supplements, regardless of their zinc content, increase growth and reduce the prevalence of stunting and wasting in young burkinabe children: a cluster-randomized trial. (jove.com)
  • Proteins
  • This work did much to encourage the adoption of a method of assessing the nutritional value of food proteins based on estimates of amino acid requirements in the United States. (danoneinstitute.org)
  • outcomes
  • Using human experimentation, we are studying methods of delivering the key minerals of calcium, zinc and iron in the diet so as to optimize health outcomes. (clinicaltrials.gov)
  • We aimed to assess the impact of providing SQ-LNS with varied amounts of zinc, along with illness treatment, on zinc-related outcomes compared with standard care. (jove.com)
  • Techniques
  • These studies will utilize stable isotope techniques so as to provide accurate, practically applicable information which may be obtained from the study populations in a safe manner. (clinicaltrials.gov)
  • 2004) 'Stable isotope techniques in studies of the ecological diversity and functions of earthworm communities in agricultural soils' In: Pandalai, S.G (eds). (ucd.ie)
  • Stable isotope techniques like these were developed by geoscientists, who have relied on them for decades, but they've only recently been applied in studies of human health. (earthmagazine.org)
  • Stable isotope techniques to design effective food fortification strategies in settings with high Helicobacter pylori infection. (iaea.org)
  • detect
  • We show below that we can detect and quantitate zinc (and other elements) in the nail plasma for an accurate, ratiometric measurement solution. (grantome.com)
  • studies
  • This publication presents the proceedings of the latest IAEA symposium on isotopes in hydrology, marine ecosystems and climate change studies. (iaea.org)
  • and analytical methods and instrumentation for the application of isotopes in environmental, climate and hydrological studies. (iaea.org)
  • Earlier studies mainly focused on Hg-Se interaction based on biokinetics and bioaccumulation, but the influences of Se on in vivo biotransformation of methylmercury (MeHg) have not been well understood. (deepdyve.com)
  • The project involves a multidisciplinary approach using regional geological, geophysical and structural studies, brine chemical modelling and geochemical and isoitopic halo studies to provide a foundation on which to build a network of exploration criteria and ore deposit models for major sedimenthosted base metal deposits. (edu.au)
  • placebo
  • Subjects will be provided supplemental vitamin D3 (1000 IU) or placebo, given once daily (based on the stratification noted above). (clinicaltrials.gov)
  • Soil
  • Using stable isotope data from soil and vegetation xylem samples across a range of landscape positions, this study provides preliminary insights into spatial patterns and temporal dynamics of soil-pla. (bioportfolio.com)
  • geological
  • 1. To determine the primary geological, geochemical and structural controls on the location and timing of base metal mineral deposits in sedimentary basins. (edu.au)
  • 4. To develop geological and geochemical vectors to a variety of styles of sedimentary base metal mineralisation that may be used in the exploration for large tonnage deposits. (edu.au)
  • mass
  • For this, we will do LIBS determinations on nail clippings, then measure the zinc in the same clippings by our reference method, which is stable-isotope-dilution ICP mass spectrometry. (grantome.com)
  • First, they may be designated by writing the name of the element followed by the mass number of the isotope. (encyclopedia.com)
  • Second, isotopes may be designated by the chemical symbol of the element with a superscript that shows their mass number. (encyclopedia.com)
  • As an example, potassium has a radioactive isotope with mass number 40, 40 K or potassium-40. (encyclopedia.com)
  • The advantage of using two or more isotopes of the same element is that the isotopes will all have the same chemical properties but may differ from each other because of their mass differences. (encyclopedia.com)
  • But because the difference in mass between the two isotopes is not very great, the diffusion had to be repeated many times before the two isotopes could be separated very well. (encyclopedia.com)
  • data
  • These data will have global application and provide a strong basis for evidence-based nutritional recommendations to be developed. (clinicaltrials.gov)
  • study
  • The present project has emerged from decades long discussions among clinicians who study zinc nutrition and those who work primarily on zinc measurement and zinc imaging technologies. (grantome.com)
  • aluminum
  • Allied Metal Company is one of the largest smelters of aluminum and alloyers of zinc. (azom.com)
  • different
  • Nanoparticles containing three different layers of material can help to boost the performance of a zinc-air battery, A*STAR researchers have found. (phys.org)