Zobrazeno 1 - 10
of 60
pro vyhledávání: '"K. J. Mathew"'
Publikováno v:
Indian Journal of Social Psychiatry, Vol 36, Iss 4, Pp 327-332 (2020)
Background: Mental illness does not have a homogeneous definition since its explanation varies across the culture. Caregivers are playing a vital role in the decision-making process of patient treatment. Thus, the objective of this study is to invest
Externí odkaz:
https://doaj.org/article/8db9f12c5f744a3ba0ee5f5fb40c6275
Autor:
Kurt Marti, K. J. Mathew
Publikováno v:
The Astrophysical Journal. 940:14
Isotopic anomalies in several elements, as recently observed in meteorites, are generally interpreted to indicate nonequilibrium environments in the protoplanetary disk (PPD). Here we study reported Xe isotopic compositions on planets Earth and Mars,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6aeec22505666baec8029f7d03cf166
https://doi.org/10.3847/1538-4357/ac9904
https://doi.org/10.3847/1538-4357/ac9904
Autor:
E. Miller Wylie, Chelsea Ottenfeld, Benjamin T. Manard, R. Kenneth Marcus, Edward D. Hoegg, K. J. Mathew
Publikováno v:
Journal of the American Society for Mass Spectrometry. 30:278-288
The integration of the liquid sampling-atmospheric pressure glow discharge (LS-APGD) ion source with Orbitrap mass spectrometers has resulted in new opportunities in the field of isotope ratio mass spectrometry. In a field that has been dominated by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d73373dc07f1fbc17c638552023c48e2
https://doi.org/10.1007/s13361-018-2071-2
https://doi.org/10.1007/s13361-018-2071-2
Autor:
K. J. Mathew, Katherine Garduno, Lisa Michelle Colletti, Ernest M. Wylie, Elmer Lujan, Laurie F. Walker
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 318:227-233
The modified New Brunswick Laboratory (NBL) Davies and Gray titrimetry method uses potassium dichromate standard 136-f from the National Institute of Standards and Technology for calibration. However, the presence of chromium in the resulting waste s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::69d93cf12ac95a378fcf615b4a5cdcb9
https://doi.org/10.1007/s10967-018-6129-1
https://doi.org/10.1007/s10967-018-6129-1
Autor:
K. J. Mathew, S. Aragon, Michael Francis Schappert, Dennis Patrick Montoya, Michael S. Rearick, Ning Xu
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 318:323-330
The accuracy and precision systematic of traceable certified reference material (CRM) standards can be combined to estimate the uncertainties that are achieved in analytical measurements. Standards (CRMs or other well characterized materials) in matr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0405d1548274fd7b69b320e65102a772
https://doi.org/10.1007/s10967-018-6026-7
https://doi.org/10.1007/s10967-018-6026-7
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 318:395-400
Plutonium certified reference materials (CRMs) 136, 137, and 138 were produced, characterized, and certified in the period 1966 through 1971 by the National Bureau of Standards. The thermal ionization mass spectrometry (TIMS) instruments and the anal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::caa4858949498459077c4bf92f92b950
https://doi.org/10.1007/s10967-018-5974-2
https://doi.org/10.1007/s10967-018-5974-2
Autor:
Floyd E. Stanley, Mariam R. Thomas, Khalil J. Spencer, Russell C. Keller, K. J. Mathew, Benjamin L. Byerly
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 311:1819-1824
Parent–progeny isotope relationships provide critical signatures in forensic efforts designed to determine the history of interdicted nuclear materials. Unfortunately, there is substantial need for new standards and QC strategies yielding confidenc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8039698b07bc4fd2e67bab9b5299371
https://doi.org/10.1007/s10967-016-5133-6
https://doi.org/10.1007/s10967-016-5133-6
Autor:
K. J. Mathew, Ross W. Williams, Joanna S. Denton, Mariam R. Thomas, Floyd E. Stanley, Tara Mastren, Adrian Nicholl, Andrew J. Gaunt, Keller Ra, Tashi Parsons-Davis, Katherine Garduno, Amy M. Gaffney, William S. Kinman, Josh Wimpenny, Theresa M. Kayzar-Boggs, Klaus Mayer, James Brent Fulwyler, R. E. Steiner, Zsolt Varga, Dana Labotka, Allison Wende, Joel R. Maassen, Jung Rim, Maria Wallenius, Richard A. Torres, Elmer Lujan, Lav Tandon, Kerri C. Treinen, Iain May, John M. Rolison, Donivan R. Porterfield, Chelsea Ottenfeld, J. D. Inglis
Publikováno v:
Analytical chemistry. 91(18)
An intercomparison of the radio-chronometric ages of four distinct plutonium-certified reference materials varying in chemical form, isotopic composition, and period of production are presented. The cross-comparison of the different 234U/238Pu, 235U/
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2e9684d4ead630e284aa8720e7a7eba
https://pubmed.ncbi.nlm.nih.gov/31418542
https://pubmed.ncbi.nlm.nih.gov/31418542
Publikováno v:
International Journal of Mass Spectrometry. 458:116430
Three gravimetric mixtures with 241Am/243Am isotope ratios at nominally 1:1, 20:1, and 200:1 were prepared for calibration of the thermal ionization mass spectrometer instruments used for americium isotopic and assay measurements by isotope dilution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::997d785094acf3b7e8e67a14e7bf7657
https://doi.org/10.1016/j.ijms.2020.116430
https://doi.org/10.1016/j.ijms.2020.116430
Autor:
Floyd E. Stanley, Khalil J. Spencer, Mariam R. Thomas, K. J. Mathew, Lisa P. Colletti, Lav Tandon
Publikováno v:
Analytical Methods. 8:7289-7305
Certified reference materials (CRMs) traceable to national and international safeguards database are a critical prerequisite for ensuring that nuclear measurement systems are free of systematic biases. CRMs are used to validate measurement processes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b9882b689c12f69748c3544f3e4a1b6
https://doi.org/10.1039/c6ay02267g
https://doi.org/10.1039/c6ay02267g