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  • stable isotope analysis
  • This is one of my primary research interests and consists of a number of interrelated projects aimed at understanding how the environment has changed in the Canadian Arctic over the last 4,000 years through stable isotope analysis of animal remains (seals, walrus, polar bears, whales, foxes) from archaeological sites. (trentu.ca)
  • Small scale camelid husbandry on the north coast of Peru (Virú Valley): Insight from stable isotope analysis. (trentu.ca)
  • I will be conducting stable isotope analysis on faunal remains (fish, marine mammals, birds) recovered from archaeological sites in the Channel Islands. (trentu.ca)
  • Regional ecological variability and impact of the maritime fur trade on nearshore ecosystems in southern Haida Gwaii (British Columbia, Canada): evidence from stable isotope analysis of rockfish (Sebastes spp. (trentu.ca)
  • Assessing evidence of weaning and climate extremes in incremental microsamples of human dentin collagen from Malawi: A stable isotope analysis. (nyu.edu)
  • 2017
  • March 8, 2017-Deuterium and tritium-heavy isotopes of hydrogen-not only have numerous applications in science and medicine, but could also contribute to the energy mix of tomorrow as fuels for nuclear fusion. (ornl.gov)
  • Hydrogen
  • Oxygen and hydrogen isotope relationships in hydrothermal mineral deposits. (nii.ac.jp)
  • However, the process of filtering deuterium out of the natural isotopic mixture of hydrogen is at present both difficult and expensive. (ornl.gov)
  • They have presented a metal-organic framework compound that can be used to separate the two isotopes from normal hydrogen more efficiently than previous methods. (ornl.gov)
  • Our metal-organic framework compound should make it easier and less energy-intensive to isolate deuterium from the naturally occurring mixture of hydrogen isotopes," said Dirk Volkmer, whose colleagues in the Department of Solid-State Chemistry at the University of Augsburg synthesized the material. (ornl.gov)
  • Among other things, they determined the quantities of deuterium and normal hydrogen that the material absorbs from a mixture of equal parts of the two isotopes at various temperatures. (ornl.gov)
  • Additionally, neutrons can distinguish among the signals coming from different isotopes like hydrogen and deuterium. (ornl.gov)
  • incorporation
  • 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)
  • Measuring iron bioavailability by isotopic techniques The most common method is based on incorporation of the isotope e.g Fe-57, Fe-58 into red blood cells following extrinsic labeling (mixing label directly with the food) and feeding to the test subjects. (amazonaws.com)
  • Since newly absorbed iron is primarily used for hemoglobin synthesis, iron bioavailblitiy from a specific diet can be determined by measuring the incorporation of an iron isotope into red blood cell hemoglobin 14 days after the ingestion of the test meal. (amazonaws.com)
  • Incorporation of Dietary Isotopic Data (d15N AND d13C) in the Analysis of Forensic Skeletal Cases from the New York City Office of Chief Medical Examiner. (nyu.edu)
  • soils
  • 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)
  • paleontology
  • Attention then turns to stable isotopes and after reviewing the basic principles involved, the book explores their use in topics as diverse as mantle evolution, archeology and paleontology, ore formation, and, particularly, paleoclimatology. (wiley.com)
  • Calcium
  • Together, they have measured concentrations of calcium isotopes - specifically stable isotopes, which occur naturally and do not decay into other elements - in the urine of participants in a long-term bed-rest study run by NASA to mimic conditions seen in microgravity and study the effects on human anatomy. (earthmagazine.org)
  • Channon MB, Gordon GW, Morgan JLL et al (2015) Using natural, stable calcium isotopes of human blood to detect and monitor changes in bone mineral balance. (springer.com)
  • Gordon GW, Monge J, Channon MB et al (2014) Predicting multiple myeloma disease activity by analyzing natural calcium isotopic composition. (springer.com)
  • Heuser A, Tütken T, Gussone N et al (2011a) Calcium isotopes in fossil bones and teeth-diagenetic versus biogenic origin. (springer.com)
  • Heuser A, Frings-Meuthen P, Rittweger J et al (2011b) Calcium isotopes in human urine under simulated microgravity conditions. (springer.com)
  • Analyses
  • 7 22 23 Isotopic kinetic-decay analyses have required prolonged measurement periods. (ahajournals.org)
  • Additional multi disciplinary analyses are warranted to confirm inferred patterns of Indus mobility, but the available isotopic data suggest that efforts to classify and regulate human movement in the ancient Indus region likely helped structure socioeconomic integration across an ethnically diverse landscape. (jove.com)
  • selenium
  • Selenium isotopes record extensive marine suboxia during the Great Oxidation Event (Proceedings National Academy of Science USA,/114/, 875-880. (washington.edu)
  • oxygen
  • Sea-land oxygen isotopic relationships from planktonic foraminifera and speleothems in the. (deepdyve.com)
  • The use of bromine pentafluoride in the extraction of oxygen from oxides and silicates for isotopic analysis. (nii.ac.jp)
  • mass spectrometry
  • 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)
  • abundances
  • The Commission on Isotopic Abundances and Atomic Weights at the International Union of Pure and Applied Chemistry has decided the time has come to ensure that the figures listed on the official Table of Standard Atomic Weights properly indicate the variability that exists in nature. (latimes.com)
  • Ions
  • Zinc, cadmium, and mercury can lose the two electrons in the outermost shell to form dipositive ions, M 2+ (in which M represents a generalized metal element), thereby exposing the next innermost shell with a stable configuration in each case of 18 electrons. (britannica.com)
  • Differing from zinc and mercury, cadmium can form the complex ions represented by the formulas [CdCl 3 ] − and [CdCl 4 ] 2− in solution. (britannica.com)
  • While iron (II) and zinc (II) ions demonstrate regular values of diffusion coefficients, which are all in the range of 10-6-10-5 cm2/sec, tungsten (IV) ions diffuse considerably slower. (scientific.net)
  • A. Lugovskoy, Z. Unger, M. Zinigrad and D. Aurbach: Electrochemical Reduction of Zinc Ions in Chloride Melts at 700-750 oC, in preparation. (scientific.net)
  • marine isoto
  • Low δ 18 O minima in the Peqiin profile for the last 250- to 185-kyr period (interglacial marine isotopic stage 7) match the timing of sapropels 9 to 7 and are indicative of high rainfall in the EM region at these times. (deepdyve.com)
  • bone loss
  • And besides showing promise for determining bone loss, stable isotopes may be useful as biomarkers for a variety of other health problems. (earthmagazine.org)
  • Finally, current biomedical applications of Ca isotopes for the detection of bone loss during bed rest studies and during bone cancer are presented. (springer.com)
  • cadmium
  • Zinc group element , any of the four chemical elements that constitute Group 12 (IIb) of the periodic table-namely, zinc (Zn), cadmium (Cd), mercury (Hg), and copernicium (Cn). (britannica.com)
  • this tendency is most marked in the case of mercury, less so in that of zinc, and least with cadmium. (britannica.com)
  • analysis
  • My focus for this project will be the isotopic analysis of plant and animal remains found at the site, potentially examining prehistoric human diet, animal husbandry practices, and agricultural strategies. (trentu.ca)
  • Aramendía M, Rello L, Resano M et al (2013) Isotopic analysis of Cu in serum samples for diagnosis of Wilson's disease: a pilot study. (springer.com)
  • Isotopic analysis of the water, he said, "showed that it was KC tap water," and the case ended up in court. (latimes.com)
  • noble
  • These studies are based on the development of innovative isotopic tools that rely on the CRPG analytical facilities (ion probes, noble gas mass spectrometers, TIMS, and next-generation ICP-MS), and on the CRPG experimental petrology lab . (cnrs-nancy.fr)
  • The final chapter reviews the isotopic variation in the noble gases, which result from both radioactive decay and chemical fractionations. (wiley.com)
  • solar system
  • Subsequent chapters cover nucleosynthetic anomalies in meteorites and early solar system chronology and the use of radiogenic isotopes in understanding the evolution of the Earth's mantle, crust, and oceans. (wiley.com)
  • Moon
  • They compared the blend of zinc isotopes in Moon rocks and Earth samples, and found that the Moon rocks held slightly higher proportions of heavier zinc isotopes. (slashdot.org)
  • If the Moon was indeed once part of Earth - which has been shown by extensive modeling (PDF) - the difference in the balance of zinc profiles would most likely be explained by lighter zinc isotopes evaporating away following a collision. (slashdot.org)
  • found
  • The Rossland volcanics and the Slocan argillite, slate and limestones are important units in this terrane and contain significant mineral deposits such as found in the Slocan silver-lead-zinc camp. (gov.bc.ca)
  • Iron
  • Indonesia : Evaluation of iron and zinc absorption from fortified foods 35% of pre-school age children underweight and 50% micronutrient deficient including iron & zinc 51% of pregnant women Iron deficiency anemia (IDA) The government decided to fortify wheat flour with Fe, Zn, folate The Agencys technical support for bioavailability study as part of a traditional Indonesian diet. (amazonaws.com)
  • A sample of 300 children within the program was additionally given milk fortified with iron and zinc. (amazonaws.com)
  • The electrodepostion of bi-valent iron, zinc and tungsten (IV) on tungsten electrodes in equimolar NaCl-KCl melt at 700-750oC was studied by Cyclic Voltammetry and Chronoamperometry. (scientific.net)
  • Cereals are an important source of iron (Fe) and zinc (Zn) for humans, but their concentrations are generally low in white flour (which corresponds to the starchy endosperm) and their bioavailability is limited by high phytate content in the bran. (springer.com)
  • novel
  • 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)
  • metabolism
  • Here, we describe detailed methods to perform stable isotopic profiling of intermediary metabolism and metabolic flux in the nematode, Caenorhabditis elegans . (jove.com)