The Experts below are selected from a list of 160305 Experts worldwide ranked by ideXlab platform
A Altomare - One of the best experts on this subject based on the ideXlab platform.
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advances in powder Diffraction Pattern indexing n treor09
Journal of Applied Crystallography, 2009Co-Authors: A Altomare, C Giacovazzo, A G G Moliterni, Gaetano Campi, Corrado Cuocci, Lars Eriksson, Rosanna Rizzi, Pererik WernerAbstract:Powder Pattern indexing can still be a challenge, despite the great recent advances in theoretical approaches, computer speed and experimental devices. More plausible unit cells, belonging to diffe ...
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on the number of statistically independent observations in a powder Diffraction Pattern
Journal of Applied Crystallography, 1995Co-Authors: A Altomare, Giovanni Luca Cascarano, C Giacovazzo, Antonietta Guagliardi, A G G Moliterni, M C Burla, Giampiero PolidoriAbstract:When in a powder Diffraction Pattern two or more peaks heavily overlap, the integrated intensities of the overlapping reflections are correlated. This paper describes a method, based on the study of the peak overlap, which estimates the number of statistically independent intensities associated with a powder diagram. Such a number can be useful for forecasting the rate of success of direct methods procedures for ab initio crystal structure solution and for evaluating a priori the efficiency of least-squares programs devoted to crystal structure refinement.
Heyan Wang - One of the best experts on this subject based on the ideXlab platform.
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generation of uniform Diffraction Pattern and high emi shielding performance by metallic mesh composed of ring and rotated sub ring arrays
Optics Express, 2016Co-Authors: Heyan Wang, Jiubin TanAbstract:We present an optical transmission model and a fast shielding effectiveness (SE) evaluation method for the inductive mesh comprising metallic rings with rotated sub-ring arrays, which can be extended for designing and optimizing other ring-based mesh structures. The theoretical analysis and experimental verification show that the established model and method are valid. A Ku-band SE >17 dB (98% energy attenuation) is observed for a triangular ring mesh with rotated sub-rings, and a normalized visible transmittance >95% is obtained with an ultra-uniform Diffraction Pattern, thus indicating the possibilities of our approach for high-optical-transmittance, strong-SE, reduced-image-degradation shielding applications.
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achieving an ultra uniform Diffraction Pattern of stray light with metallic meshes by using ring and sub ring arrays
Optics Letters, 2016Co-Authors: Zhengang Lu, Heyan WangAbstract:We provide theoretical and experimental evidence that introducing metallic rings and sub-rings in mesh unit cells significantly decreases the high-order Diffraction energy. Moreover, rotating the sub-rings results in increased uniformity in the Diffraction distribution without affecting the transmittance. Experiments show that the triangular ring mesh with rotated sub-rings exhibits a normalized visible transmittance greater than 95% as well as an ultra-uniform Diffraction Pattern of stray light, whose maximal normalized high-order Diffraction energy is lower than 0.0167%. This kind of metallic mesh will be favorable in transparent electromagnetic interference shielding devices and touch screens.
Jonathan Paisley - One of the best experts on this subject based on the ideXlab platform.
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high throughput powder Diffraction i a new approach to qualitative and quantitative powder Diffraction Pattern analysis using full Pattern profiles
Journal of Applied Crystallography, 2004Co-Authors: Christopher J Gilmore, Gordon Barr, Jonathan PaisleyAbstract:A new integrated approach to full powder Diffraction Pattern analysis is described. This new approach incorporates wavelet-based data pre-processing, non-parametric statistical tests for full-Pattern matching, and singular value decomposition to extract quantitative phase information from mixtures. Every measured data point is used in both qualitative and quantitative analyses. The success of this new integrated approach is demonstrated through examples using several test data sets. The methods are incorporated within the commercial software program SNAP-1D, and can be extended to high-throughput powder Diffraction experiments.
C Giacovazzo - One of the best experts on this subject based on the ideXlab platform.
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advances in powder Diffraction Pattern indexing n treor09
Journal of Applied Crystallography, 2009Co-Authors: A Altomare, C Giacovazzo, A G G Moliterni, Gaetano Campi, Corrado Cuocci, Lars Eriksson, Rosanna Rizzi, Pererik WernerAbstract:Powder Pattern indexing can still be a challenge, despite the great recent advances in theoretical approaches, computer speed and experimental devices. More plausible unit cells, belonging to diffe ...
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on the number of statistically independent observations in a powder Diffraction Pattern
Journal of Applied Crystallography, 1995Co-Authors: A Altomare, Giovanni Luca Cascarano, C Giacovazzo, Antonietta Guagliardi, A G G Moliterni, M C Burla, Giampiero PolidoriAbstract:When in a powder Diffraction Pattern two or more peaks heavily overlap, the integrated intensities of the overlapping reflections are correlated. This paper describes a method, based on the study of the peak overlap, which estimates the number of statistically independent intensities associated with a powder diagram. Such a number can be useful for forecasting the rate of success of direct methods procedures for ab initio crystal structure solution and for evaluating a priori the efficiency of least-squares programs devoted to crystal structure refinement.
A G G Moliterni - One of the best experts on this subject based on the ideXlab platform.
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advances in powder Diffraction Pattern indexing n treor09
Journal of Applied Crystallography, 2009Co-Authors: A Altomare, C Giacovazzo, A G G Moliterni, Gaetano Campi, Corrado Cuocci, Lars Eriksson, Rosanna Rizzi, Pererik WernerAbstract:Powder Pattern indexing can still be a challenge, despite the great recent advances in theoretical approaches, computer speed and experimental devices. More plausible unit cells, belonging to diffe ...
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on the number of statistically independent observations in a powder Diffraction Pattern
Journal of Applied Crystallography, 1995Co-Authors: A Altomare, Giovanni Luca Cascarano, C Giacovazzo, Antonietta Guagliardi, A G G Moliterni, M C Burla, Giampiero PolidoriAbstract:When in a powder Diffraction Pattern two or more peaks heavily overlap, the integrated intensities of the overlapping reflections are correlated. This paper describes a method, based on the study of the peak overlap, which estimates the number of statistically independent intensities associated with a powder diagram. Such a number can be useful for forecasting the rate of success of direct methods procedures for ab initio crystal structure solution and for evaluating a priori the efficiency of least-squares programs devoted to crystal structure refinement.