Zobrazeno 1 - 10 of 113 pro vyhledávání: '"Hideo Toraya"'
1
A new procedure for separating a multi-component powder diffraction pattern into individual component patterns without utilizing the pattern model for one of the components
Autor: Hideo Toraya
Publikováno v: Journal of Applied Crystallography. 56:263-274
A new procedure has been developed for separating a multi-component powder diffraction pattern into its individual component patterns without utilizing the pattern model for one of the components. In currently used whole-powder-pattern fitting (WPPF)
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7819081f38988c1e0cc98e64d22f4268
https://doi.org/10.1107/s1600576722012201
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3
Review of the direct derivation method: quantitative phase analysis with observed intensities and chemical composition data
Autor: Hideo Toraya
Publikováno v: Powder Diffraction. 36:159-168
The direct derivation (DD) method is a technique for quantitative phase analysis (QPA). It can be characterized by the use of the total sums of scattered/diffracted intensities from individual components as the observed data. The crystal structure pa
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f62e763b8997d9a36c1b9d4929fd3730
https://doi.org/10.1017/s0885715621000373
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4
Finding the best-fit background function for whole-powder-pattern fitting using LASSO combined with tree search
Autor: Hideo Toraya
Publikováno v: Journal of Applied Crystallography. 54:427-438
A new linear function for modelling the background in whole-powder-pattern fitting has been derived by applying LASSO (least absolute shrinkage and selection operator) and the technique of tree search. The background function (BGF) consists of terms
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8b00db08c759b6506fc528cb7ba02822
https://doi.org/10.1107/s1600576720016751
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5
Accurate and time-saving quantification of a component present in a very small amount in a mixture by the direct derivation method
Autor: Hideo Toraya
Publikováno v: Journal of Applied Crystallography. 53:1225-1235
In quantitative phase analysis (QPA) using the direct derivation (DD) method, total sums of diffracted/scattered intensities for individual components are used as observed quantities. Fluctuation in their relative intensity ratios induces errors in d
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::43b06545e0e20a4a1fda71bac420fd7e
https://doi.org/10.1107/s1600576720010225
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6
A practical approach to the direct-derivation method for QPA: use of observed powder patterns of individual components without background subtraction in whole-powder-pattern fitting
Autor: Hideo Toraya
Publikováno v: Journal of Applied Crystallography. 52:520-531
The direct-derivation (DD) method for quantitative phase analysis (QPA) can be used to derive weight fractions of individual phases in a mixture from the sums of observed intensities along with the chemical composition data [Toraya (2016). J. Appl. C
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2d8597eb5bf15cccfcd09f235efa3f2d
https://doi.org/10.1107/s1600576719003406
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7
Quantitative phase analysis of amorphous components in mixtures by using the direct-derivation method
Autor: Hideo Toraya, Kazuhiko Omote
Publikováno v: Journal of Applied Crystallography. 52:13-22
The direct-derivation (DD) method is a new technique for quantitative phase analysis (QPA) [Toraya (2016). J. Appl. Cryst. 49, 1508–1516]. A simple equation, called the intensity–composition (IC) formula, is used to derive weight fractions of ind
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::516987ed09489d1812ad22624b200be0
https://doi.org/10.1107/s1600576718016394
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9
Direct derivation (DD) of weight fractions of individual crystalline phases from observed intensities and chemical composition data: incorporation of the DD method into the whole-powder-pattern fitting procedure
Autor: Hideo Toraya
Publikováno v: Journal of Applied Crystallography. 51:446-455
A formula for quantitative phase analysis (QPA), called the intensity–composition (IC) formula, can be used for deriving weight fractions of individual crystalline phases in a mixture from sets of observed integrated intensities, measured in a wide
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3486629caaf69e16ef97aa8e4aa14e9c
https://doi.org/10.1107/s1600576718001474
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10
Quantitative phase analysis using observed integrated intensities and chemical composition data of individual crystalline phases: quantification of materials with indefinite chemical compositions
Autor: Hideo Toraya
Publikováno v: Journal of Applied Crystallography. 50:820-829
In a previous report, a new method for quantitative phase analysis (QPA) of multi-component mixtures using a conventional X-ray powder diffractometer was proposed. The formula for deriving weight fractions of individual crystalline phases presented t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1041a0659f06222897fb311d0ca520fb
https://doi.org/10.1107/s1600576717005052
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