Výsledky vyhledávání - "Henk G. Jansen"

Measurement of δ18O and δ2H of water and ethanol in wine by Off-Axis Integrated Cavity Output Spectroscopy and Isotope Ratio Mass Spectrometry

Autor: Xing Wang, Haico Duin, Henk G. Jansen, Harro A. J. Meijer

Publikováno v: European Food Research and Technology, 247(8), 1899-1912

There are two officially approved methods for stable isotope analysis for wine authentication. One describes δ18O measurements of the wine water using Isotope Ratio Mass Spectrometry (IRMS), and the other one uses Deuterium-Nuclear Magnetic Resonanc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::644471468fa0415867469274dfb0e0e8
https://research.rug.nl/en/publications/838070e1-1f48-4139-abb9-9e679e1df5ae

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Evaluation of a field-deployable Nafion™-based air-drying system for collecting whole air samples and its application to stable isotope measurements of CO2

Autor: S. E. Michel, Caio S. C. Correia, Harro A. J. Meijer, Dipayan Paul, Henk G. Jansen, H. A. Scheeren, Lucas G. Domingues, Wouter Peters, Bert A. M. Kers, Raiane A.L. Neves, John B. Miller, A. M. Crotwell, Luciana V. Gatti

Publikováno v: Atmospheric Measurement Techniques. 13:4051-4064

Atmospheric flask samples are either collected at atmospheric pressure by opening a valve of a pre-evacuated flask or pressurized with the help of a pump to a few bar above ambient pressure. Under humid conditions, there is a risk that water vapor in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e06613ff2d43f2183500696929e9d72
https://doi.org/10.5194/amt-13-4051-2020

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Evaluation of a field-deployable Nafion™-based air-drying system for collecting whole air samples and its application to stable isotope measurements of CO2

Autor: Dipayan Paul, Hubertus A. Scheeren, Henk G. Jansen, Bert A. M. Kers, John B. Miller, Andrew M. Crotwell, Sylvia E. Michel, Luciana V. Gatti, Lucas G. Domingues, Caio S. C. Correia, Raiane A. L. Neves, Harro A. J. Meijer, Wouter Peters

Publikováno v: Atmospheric Measurement Techniques

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=r3c4b2081b22::1e06613ff2d43f2183500696929e9d72

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Evaluation of a field-deployable Nafion-based air drying system for collecting whole air samples and its application to stable isotope measurements of CO2

Atmospheric flask samples are either collected at atmospheric pressure by simply opening a valve of a pre-evacuated flask, or pressurized with the help of a pump to a few bar above ambient providing large air samples for analysis. Under humid conditi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::eb6ee43957959be3fc681a7a5bbd9fb7
https://doi.org/10.5194/amt-2019-295

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Total energy expenditure assessed by salivary doubly labelled water analysis and its relevance for short-term energy balance in humans

Autor: Antonius Scheurink, Andre van Vliet, Gertjan van Dijk, Harro A. J. Meijer, Stefano Guidotti, Anita T. Aerts-Bijma, B. M. A. A. Verstappen-Dumoulin, Henk G. Jansen

Publikováno v: Rapid Communications in Mass Spectrometry. 30:143-150

RationaleThe doubly labelled water (DLW) method is a stable isotopic technique for measuring total energy expenditure (TEE). Saliva is the easiest sampling fluid for assessing isotopic enrichments, but blood is considered superior because of its rapi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::088ee6c266bbb310be02396244ab8dc3
https://doi.org/10.1002/rcm.7412

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Total energy expenditure assessed by salivary doubly labelled water analysis and its relevance for short-term energy balance in humans

Autor: Stefano, Guidotti, Berthe M A A A, Verstappen-Dumoulin, Henk G, Jansen, Anita T, Aerts-Bijma, André A, van Vliet, Anton J W, Scheurink, Harro A J, Meijer, Gertjan, van Dijk

Publikováno v: Rapid communications in mass spectrometry : RCM. 30(1)

The doubly labelled water (DLW) method is a stable isotopic technique for measuring total energy expenditure (TEE). Saliva is the easiest sampling fluid for assessing isotopic enrichments, but blood is considered superior because of its rapid exchang

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::ee40fb736a83943e51daa98df158996e
https://pubmed.ncbi.nlm.nih.gov/26661981

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Comprehensive inter-laboratory calibration of reference materials for delta O-18 versus VSMOW using various on-line high-temperature conversion techniques

Autor: Stephan M. Weise, Karin Soergel, Stanley J. Mroczkowski, Heike Geilmann, Henk G. Jansen, Hilary Stuart-Williams, Haiping Qi, Harro A. J. Meijer, Willi A. Brand, John Karl Böhlke, Roland A. Werner, Anita T. Aerts-Bijma, Matthias Gehre, Tyler B. Coplen, Manfred Gröning

Publikováno v: Rapid Communications in Mass Spectrometry, 23(7), 999-1019. Wiley

Internationally distributed organic and inorganic oxygen isotopic reference materials have been calibrated by six laboratories carrying out more than 5300 measurements using a variety of high-temperature conversion techniques (HTC)a in an evaluation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d76ecb4124b53dbd3ba1320eedc8b3d2
https://research.rug.nl/en/publications/d3c2b69c-4257-4071-a0fa-24a050810999

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