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Knowledge Base Articles

Identifying proteins bound to native mitotic ESC chromosomes reveals chromatin repressors are important for compaction

Dounia Djeghloul, Bhavik Patel, Holger Kramer, Andrew Dimond, Chad Whilding, Karen Brown, Anne-Céline Kohler, Amelie Feytout, Nicolas Veland, James Elliott, Tanmay A. M. Bharat, Abul K. Tarafder, Jan Löwe, Bee L. Ng, Ya Guo, Jacky Guy, Miles K. Husey...

Expanding the Depth and Sensitivity of Cross-Link Identification by Differential Ion Mobility Using High-Field Asymmetric Waveform Ion Mobility Spectrometry

Lennart Schnirch, Michal Nadler-Holly, Siang-Wun Siao, Christian K. Frese, Rosa Viner, and Fan LiuIn cross-linking mass spectrometry (XL-MS), the depth and sensitivity of cross-link detection is often limited by the low abundance of cross-links compa...

13C18O16O in air

13C18O16O in airJohn M. Eiler, Edwin Schauble and Nami KitchenCalTech, USAGeochimica et Cosmochimica Acta (2003), V67 (18), ppA86-A86, ISSN 0016-7037 The atmospheric budget of CO2 is constrained by its concentration, δ13C and δ18O. However, these are...

Improved detection of honey adulteration by measuring differences between 13C/12C stable carbon isotope ratios of protein and sugar compounds with a combination of elemental analyzer - isotope ratio mass spectrometry and liquid chromatography - isotope ra

Improved detection of honey adulteration by measuring differences between 13C/12C stable carbon isotope ratios of protein and sugar compounds with a combination of elemental analyzer - isotope ratio mass spectrometry and liquid chromatography - isoto...

Comparison of liquid chromatography–isotope ratio mass spectrometry (LC/IRMS) and gas chromatography–combustion– isotope ratio mass spectrometry (GC/C/IRMS) for the determination of collagen amino acid d13C values for palaeodietary and palaeoecological re

Comparison of liquid chromatography–isotope ratio mass spectrometry (LC/IRMS) and gas chromatography–combustion– isotope ratio mass spectrometry (GC/C/IRMS) for the determination of collagen amino acid d13C values for palaeodietary and palaeoecologic...

Headspace-solid phase microextraction coupled to gas chromatography–combustion-isotope ratio mass spectrometer and to enantioselective gas chromatography for strawberry flavoured food quality control

Headspace-solid phase microextraction coupled to gas chromatography–combustion-isotope ratio mass spectrometer and to enantioselective gas chromatography for strawberry flavoured food quality controlLuisa Schipilliti (1), Paola Dugo (1,2), Ivana Bona...

Evaluation of Gas Chromatography−Combustion−Isotope Ratio Mass Spectrometry (GC-C-IRMS) for the Quality Assessment of Citrus Liqueurs

Evaluation of Gas Chromatography−Combustion−Isotope RatioMass Spectrometry (GC-C-IRMS) for the Quality Assessment of Citrus LiqueursLuisa Schipilliti (1), Ivana Bonaccorsi 1), Antonella Cotroneo (1), Paola Dugo (1,2 and Luigi Mondello (1,2)1) Diaprti...

Simultaneous δ15N, δ13C and δ34S measurements of low biomass samples using a technically advanced high sensitivity elemental analyzer connected to an isotope ratio mass spectrometer

Simultaneous δ15N, δ13C and δ34S measurements of low biomass samples using a technically advanced high sensitivity elemental analyzer connected to an isotope ratio mass spectrometerT. Hansen, A. Burmeister and U. SommerLeibniz-Institute for Marine Sc...

Determination of the natural abundance δ15N of nortropane alkaloids by gas chromatography–isotope ratio mass spectrometry of their ethylcarbamate esters

Determination of the natural abundance δ15N of nortropane alkaloids by gas chromatography–isotope ratio mass spectrometry of their ethylcarbamate estersKatarzyna Kosieradzka, Illa Tea, Emmanuel Gentil and Richard J. RobinsElucidation of Biosynthesis ...

Precise δ13C analysis of dissolved inorganic carbon in natural waters using automated headspace sampling and continuous-flow mass spectrometry.

Precise δ13C analysis of dissolved inorganic carbon in natural waters using automated headspace sampling and continuous-flow mass spectrometry.M. E. Torres, A. C. Mix, and W. D. RughCollege of Oceanic and Atmospheric Sciences, Oregon State University...

Rapid and precise δ13C measurement of dissolved inorganic carbon in natural waters using liquid chromatography coupled to an isotope-ratio mass spectrometer

Rapid and precise δ13C measurement of dissolved inorganic carbon in natural waters using liquid chromatography coupled to an isotope-ratio mass spectrometerJay A. BrandesSkidaway Institute of Oceanography, Savannah, GA, USALimnology and Oceanography:...

A three-phase liquid chromatographic method for δ13C analysis of amino acids from biological protein hydrolysates using liquid chromatography–isotope ratio mass spectrometry

A three-phase liquid chromatographic method for δ13C analysis of amino acids from biological protein hydrolysates using liquid chromatography–isotope ratio mass spectrometryColin I. Smith, Benjamin T. Fuller, Kyungcheol Choy, Michael P. RichardsDepar...

Online stable carbon isotope ratio measurement in formic acid, acetic acid, methanol and ethanol in water by high performance liquid chromatography–isotope ratio mass spectrometry

Online stable carbon isotope ratio measurement in formic acid, acetic acid, methanol and ethanol in water by high performance liquid chromatography–isotope ratio mass spectrometryKeiko Tagami, Shigeo UchidaNational Institute of Radiological Sciences,...

Online δ13C analysis of volatile fatty acids in sediment/porewater systems by liquid chromatography-isotope ratio mass spectrometry

Online δ13C analysis of volatile fatty acids in sediment/porewater systems by liquid chromatography-isotope ratio mass spectrometryVerena Heuer, Marcus Elvert, Stefanie Tille, Michael Krummen, Xavier Prieto Mollar, Laura R. Hmelo, Kai-Uwe Hinrichs1) ...

A novel methylation derivatization method for δ18O analysis of individual carbohydrates by gas chromatography/pyrolysis– isotope ratio mass spectrometry

A novel methylation derivatization method for δ18O analysis of individual carbohydrates by gas chromatography/pyrolysis– isotope ratio mass spectrometryMarco M. Lehmann (1), Maria Fischer (2), Jan Blees (1), Michael Zech (3), Rolf T. W. Siegwolf (1) ...

Environmental perturbation effects on baseline δ15N values and zooplankton trophic flexibility in the southern California Current Ecosystem

Environmental perturbation effects on baseline δ15N values and zooplankton trophic flexibility in the southern California Current EcosystemMoira Décima (1), Michael R. Landry (1) and Brian N. Popp (2)1) Scripps Institution of Oceanography, University...

Purification and Gas Chromatography–Combustion–Isotope Ratio Mass Spectrometry of Aroma Compounds from Green Tea Products and Comparison to Bulk Analysis

Purification and Gas Chromatography–Combustion–Isotope Ratio Mass Spectrometry of Aroma Compounds from Green Tea Products and Comparison to Bulk AnalysisAriaki Murata (1), Ulrich H. Engelhardt (2), Peter Fleischmann (2), Keita Yamada (3), Naohiro Yos...

Comprehensive authenticity assessment of lavender oils using multielement/multicomponent isotope ratio mass spectrometry analysis and enantioselective multidimensional gas chromatography–mass spectrometry

Comprehensive authenticity assessment of lavender oils using multielement/multicomponent isotope ratio mass spectrometry analysis and enantioselective multidimensional gas chromatography–mass spectrometryJochen Jung, Sabine Sewenig, Uwe Hener and Arm...

Chondritic xenon in the Earth’s mantle

Chondritic xenon in the Earth’s mantleAntonio Caracausi (1,2), Guillaume Avice (2), Peter G. Burnard (2), Evelyn Füri (2) and Bernard Marty (2); 1) Instituto Nazionale di Geofisica e Vulcanologia, Sezione di Palermo, 90146 Palermo, Italy, 2) Centre d...

High-precision U–Pb dating of complex zircon from the Lewisian Gneiss Complex of Scotland using an incremental CA-ID-TIMS approach

High-precision U–Pb dating of complex zircon from the Lewisian Gneiss Complex of Scotland using an incremental CA-ID-TIMS approachQ.G. Crowley (1), R. Key (2), S.R. Noble (3)1) School of Natural Sciences, Department of Geology, Trinity College, Dubli...

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