Zobrazeno 1 - 10
of 142
pro vyhledávání: '"John J. Donovan"'
Publikováno v:
American Mineralogist: Journal of Earth and Planetary Materials. 108:978-986
Estimates of the oxidation states of magmas are important to current investigations of the geo-chemical characteristics of their source regions and of evolved magmatic series created during differentiation. One means of achieving such estimates is to
Autor:
John J Donovan, Aurélien Moy, Anette von der Handt, Zack Gainsforth, James L Maner, William Nachlas, John Fournelle
Publikováno v:
Microscopy and Microanalysis.
Observed photon count rates must be corrected for detector dead time effects for accurate quantification, especially at high count rates. We present the “constant k-ratio” method, a new approach for calibrating dead time for wavelength dispersive
Autor:
Owen K. Neill, Julie Chouinard, P. K. Carpenter, Karsten Goemann, Julien M. Allaz, Gareth G.E. Seward, John J. Donovan, Anette von der Handt
Publikováno v:
American Mineralogist. 106:1717-1735
While much progress has been made in electron-probe microanalysis (EPMA) to improve the accuracy of point analysis, the same level of attention has not always been applied to the quantification of wavelength-dispersive spectrometry (WDS) X-ray intens
Publikováno v:
Microscopy and Microanalysis. 27:1098-1101
Publikováno v:
Geochimica et Cosmochimica Acta. 281:149-167
We present results from 25 hydrothermal quartz growth experiments, all conducted at 800 °C and 1 kbar but with varying starting materials and run times, to address discrepancies between calibrations of the titanium-in-quartz (TitaniQ) thermobaromete
Publikováno v:
Journal of Business and Psychology, 37(6). Kluwer Academic/Human Sciences Press Inc.
We investigated individual differences in faking in simulated high-stakes personality assessments through the lens of expectancy (VIE) theory, using a novel experimental paradigm. Three hundred ninety-eight participants (MTurk) completed a “low-sta
Autor:
Dale E. Newbury, Aurélien Moy, John J. Donovan, Paul Carpenter, Nicholas W. M. Ritchie, Owen K. Neill, Edward P. Vicenzi, John H. Fournelle, Heather A. Lowers, Anette von der Handt, Emma S. Bullock
Publikováno v:
Microscopy and Microanalysis. 26:1774-1776
Publikováno v:
Microscopy and Microanalysis. 25:735-742
Due to recent advances in modeling the production of characteristic X-rays, Monte Carlo simulation of electron–solid interactions can provide improved quantitative estimates of X-ray intensities for both homogeneous and heterogeneous interaction vo
Publikováno v:
Microscopy and Microanalysis. 25:30-46
Electron microprobe trace element analysis is a significant challenge. Due to the low net intensity of peak measurements, the accuracy and precision of such analyses relies critically on background measurements, and on the accuracy of any pertinent p
Publikováno v:
Journal of Applied Social Psychology. 48:661-674