Výsledky vyhledávání - "Sahar Shabbir"

Akademický článek

From machine learning to transfer learning in laser-induced breakdown spectroscopy analysis of rocks for Mars exploration

Autor: Chen Sun, Weijie Xu, Yongqi Tan, Yuqing Zhang, Zengqi Yue, Long Zou, Sahar Shabbir, Mengting Wu, Fengye Chen, Jin Yu

Publikováno v: Scientific Reports, Vol 11, Iss 1, Pp 1-17 (2021)

Abstract With the ChemCam instrument, laser-induced breakdown spectroscopy (LIBS) has successively contributed to Mars exploration by determining the elemental compositions of soils, crusts, and rocks. The American Perseverance rover and the Chinese

Externí odkaz: https://doaj.org/article/86ed1e4b51e1418db67364c6f7dc0545

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Accurate determination of structural H2O in rocks using LIBS coupled with machine learning algorithms extensively exploring the characteristics of the Hα line

Autor: Weijie Xu, Chen Sun, Yuqing Zhang, Zengqi Yue, Sahar Shabbir, Long Zou, Fengye Chen, Li Wang, Jin Yu

Publikováno v: Journal of Analytical Atomic Spectrometry. 37:317-329

Selecting and controlling the number of highest ranked features involved in the model training process, in such a way as to avoid underfitting and overfitting and allow an RMSE of 0.11 wt% in the model testing with a set of independent test samples.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::75ba542b4c625dfe7533a59063bf8410
https://doi.org/10.1039/d1ja00366f

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From machine learning to transfer learning in laser-induced breakdown spectroscopy analysis of rocks for Mars exploration

Autor: Weijie Xu, Chen Sun, Long Zou, Fengye Chen, Mengting Wu, Yongqi Tan, Yuqing Zhang, Zengqi Yue, Jin Yu, Sahar Shabbir

Publikováno v: Scientific Reports, Vol 11, Iss 1, Pp 1-17 (2021)
Scientific Reports

With the ChemCam instrument, laser-induced breakdown spectroscopy (LIBS) has successively contributed to Mars exploration by determining the elemental compositions of soils, crusts, and rocks. The American Perseverance rover and the Chinese Zhurong r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5e3b5f84409d73d87548e2e5bd3e000e
https://doaj.org/article/86ed1e4b51e1418db67364c6f7dc0545

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Online simultaneous determination of H2O and KCl in potash with LIBS coupled to convolutional and back-propagation neural networks

Autor: Bin Liu, Zengqi Yue, Sahar Shabbir, Wenhui Liu, Chen Sun, Long Zou, Mengting Wu, Weijie Xu, Yuqing Zhang, Jin Yu, Fengye Chen

Publikováno v: Journal of Analytical Atomic Spectrometry. 36:303-313

We demonstrate in this work online in situ characterization of potash fertilizer, a powder material, at its final production stage in factory on the production conveyer belt for quality assessment, with a specifically developed laser-induced breakdow

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::96e9462f7a8420fa6a15ec5859602a0a
https://doi.org/10.1039/d0ja00431f

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Transfer learning improves the prediction performance of a LIBS model for metals with an irregular surface by effectively correcting the physical matrix effect

Autor: Yuqing Zhang, Jin Yu, Chen Sun, Zengqi Yue, Sahar Shabbir, Fengye Chen, Weijie Xu, Long Zou

Publikováno v: Journal of Analytical Atomic Spectrometry. 36:1441-1454

This work was designed to observe and further correct the physical matrix effect in the analysis of solid materials with laser-induced breakdown spectroscopy (LIBS), an effect that arises when a calibration model established with a set of certified r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ec042239cba596427f29c62d2d635ece
https://doi.org/10.1039/d1ja00076d

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Precise determination of potassium in potash with self-absorption correction in laser-induced breakdown spectroscopy

Autor: Mengting Wu, Weijie Xu, Long Zou, Yuqing Zhang, Zengqi Yue, Sahar Shabbir, Fengye Chen, Bin Liu, Wenhui Liu, Jin Yu, Chen Sun

Publikováno v: Applied Physics B. 128

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2fed7db5caacc8843e4731ce631bbd60
https://doi.org/10.1007/s00340-022-07826-7

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Total alkali silica classification of rocks with LIBS: influences of the chemical and physical matrix effects

Autor: Sahar Shabbir, Shu Liu, Yuqing Zhang, Yongqi Tan, Jin Yu, Zengqi Yue, Liang Gao, Fengye Chen, Long Zou, Chen Sun, Mengting Wu, Weijie Xu

Publikováno v: Journal of Analytical Atomic Spectrometry. 35:1641-1653

The application of laser-induced breakdown spectroscopy (LIBS) for classification of rocks with the total alkali-silica (TAS) diagram is considered in this work. The attractive feature of LIBS compared to other spectrochemical techniques used for TAS

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::59c8d722711a3c0307a07cc426e56828
https://doi.org/10.1039/d0ja00157k

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Screening ovarian cancers with Raman spectroscopy of blood plasma coupled with machine learning data processing

Autor: Wei Wang, Yuqing Zhang, Sahar Shabbir, Yan Lu, Jin Yu, Zhenwei Xie, Lanyun Zhou, Weiguo Lu, Zengqi Yue, Long Zou, Weijie Xu, Fengye Chen, Chen Sun

Publikováno v: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy. 265

The mortality of ovarian cancer is closely related to its poor rate of early detection. In the search of an efficient diagnosis method, Raman spectroscopy of blood features as a promising technique allowing simple, rapid, minimally-invasive and cost-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b702e434501f3a8a1ce98aff308155e
https://pubmed.ncbi.nlm.nih.gov/34530200

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