Search

Your search keyword '"Zhang, Li-Juan"' showing total 1,891 results
Start Over Author "Zhang, Li-Juan"
1,891 results on '"Zhang, Li-Juan"'

156. Gene Selection for Classifying Microarray Data Using Grey Relation Analysis

Author

Zhang, Li-Juan, Li, Zhou-Jun, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Carbonell, Jaime G., editor, Siekmann, Jörg, editor, Todorovski, Ljupčo, editor, Lavrač, Nada, editor, and Jantke, Klaus P., editor

Published
2006
Full Text
View/download PDF

161. Determination of Major Elements in Stream Sediments and Soils by X-ray Fluorescence Spectrometry Using Pressed-superfine Powder Pellets

Author

ZHANG Li-juan, LIU Yi-bo, LI Xiao-li, and XU Tie-min

Subjects
stream sediment, soil, ultrafine powder pellet, x-ray fluorescence spectrometry, Geology, QE1-996.5, Ecology, QH540-549.5
Abstract

The powder pellet compression method for X-ray Fluorescence analysis is an ideal environmentally friendly sample preparation technique with the added advantages of being simple and having high efficiency. However, due to the impact of particle effects and mineral effects, its measurement error is within about 5%, which hinders the application of this technology in the detection of major elements. Powder pellet technology is mainly used in the determination of trace elements as well as the analysis field with less precision. In this study, the stream sediment and soil reference material were crushed to an average particle size about 4-5 μm within a few minutes by ultra-high-speed planetary pressure prototype. The method of ultra-fine pressed powder pellet sample to determine SiO2, Al2O3, Fe2O3, CaO, MgO and other major elements was established by using X-ray Fluorescence Spectrometry. Measurement precision (RSD) of the method for most of the major elements is less than 2%, and detection limits are 0.003%-0.021%, which is an improvement on the melting method detection limit (0.006%-0.081%), especially for small atomic sodium with four times improvement on the detection limit. The development of this ultra-fine powder compression method for stream sediment and soil, minimizes the impact of the particle size effect by crushing the sample into several microns. X-ray Diffraction analysis demonstrates that the mineral composition of river sediments and soil preparation is dominated by quartz. Therefore, the mineral composition is simple with negligible mineral effect. Measured data with added LOI normalized processing shows that normalized measurements for each element is consistent with the standard value. The accuracy of the method is a significant over the conventional pellet sampling method.

Published
2014

170. Functional Connectivity Hypointensity of Middle Cingulate Gyrus and Thalamus in Age-Related Macular Degeneration Patients: A Resting-State Functional Magnetic Resonance Imaging Study

Author

Xiao, Ang, primary, Li, Hai-Jun, additional, Li, Qiu-Yu, additional, Liang, Rong-Bin, additional, Shu, Hui-Ye, additional, Ge, Qian-Min, additional, Liao, Xu-Lin, additional, Pan, Yi-Cong, additional, Wu, Jie-Li, additional, Su, Ting, additional, Zhang, Li-Juan, additional, Zhou, Qiong, additional, and Shao, Yi, additional

Published
2022
Full Text
View/download PDF

176. Ocular microvascular alteration in Sjögren syndrome

Author

Yang, Qi-Chen, primary, Yao, Fan, additional, Li, Qiu-Yu, additional, Chen, Min-Jie, additional, Zhang, Li-Juan, additional, Shu, Hui-Ye, additional, Liang, Rong-Bin, additional, Pan, Yi-Cong, additional, Ge, Qian-Min, additional, and Shao, Yi, additional

Published
2022
Full Text
View/download PDF

178. Determination of Chromite by X-ray Fluorescence Spectrometry with Sample Preparation of a Lower-Dilution Fusion

Author

ZENG Jiang-ping, WU Lei, LI Xiao-li, WANG Na, and ZHANG Li-juan

Subjects
chromite, x-ray fluorescence spectrometry, fusion sampling, 20: 1 of dilution ratio, Geology, QE1-996.5, Ecology, QH540-549.5
Abstract

Chromite analysis is dominated by chemical analysis, which is a wel-established but complicated procedure. Chromite can also be analysed by X-ray Fluorescence Spectrometry (XRF), however, a high-dilution fusion is not conducive to low content elements. In this paper, a method is reported for the determination of multi-elements (Cr, Si, Al, TFe, Mg, Ca and Mn) in chromite by Wavelength Dispersive X-ray Fluorescence Spectrometry with a low-dilution fusion for Li2B4O7 and LiBO2-mixed flux (20:1 reagent to sample). Also discussed in this paper is the effective flux of molten chromite. The working curve was established by a variety of chromite standard substances and manual preparation of standard materials. The inter-element effect was corrected by using the theoretical alpha coefficient with Compton scattered radiation. The results are consistent with the certified values and RSD (n=10) range from 0.2% to 5.3%. The detection limit of Mn is 60 μg/g. The detection limit of Mn by this method is as low as 225 μg/g which is lower than the previous reported limit of 250 μg/g reported elsewhere. By selecting the effective flux and low dilution ratio, the problem of chromite sample preparation has been solved, which reduces the amount of flux, increases the sample weight, improves the analysis accuracy for low content elements and reduces the cost of analysis.

Published
2013

182. Additional file 1 of Molecular evidence on the presence of Schistosoma japonicum infection in snails along the Yangtze River, 2015–2019

Author

Li, Yin-Long, Dang, Hui, Guo, Su-Ying, Zhang, Li-Juan, Feng, Yun, Ding, Song-Jun, Shan, Xiao-Wei, Li, Guang-Ping, Yuan, Min, Xu, Jing, and Li, Shi-Zhu

Abstract

Additional file 1: Table S1. Percentage of frames with living snails in each province from 2015 to 2019. Table S2. The mean density of living snails in 5 provinces from 2015 to 2019.

Published
2022
Full Text
View/download PDF

186. A Novel Scheme to Improve the Stability of Conventional‐Concentration Electrolyte at High Voltage.

Author

Zhang, Jing‐Jing, Wang, Jie, Wu, Shu‐Min, Wang, Peng, Sun, Jin‐Long, Zhao, Dong‐Ni, Zhang, Li‐Juan, Mao, Li‐Ping, Niu, Lei, and Cui, Xiao‐Ling

Subjects
HIGH voltages, ELECTROLYTES, FOOD emulsions, MAGNETRON sputtering, MAGNETRONS, LITHIUM-ion batteries
Abstract

It is well‐known that conventional‐concentration electrolytes (CCEs) will undergo serious oxidative decomposition in high‐voltage lithium‐ion batteries, while high‐concentration electrolytes (HCEs) have good oxidation stability. However, HCEs are difficult to scale‐up for industrial applications due to their high viscosity and cost. Herein, based on the anti‐oxidation mechanism of HCE, a novel scheme to improve the stability of CCE at high voltage was proposed. By means of magnetron sputtering LiF on LiNi0.5Mn1.5O4 surface and introducing LiPO2F2 additive, a stable cathode electrolyte interphase (CEI) film is constructed in CCE. AFM results show that the constructed CEI film in CCE has better mechanical strength and adhesion than that formed by HCE. Moreover, the battery performance with the constructed CEI film in CCE, which affords high stability at high voltage, fast‐charging kinetics, and improved cycling stability (135 mAh g−1 after 200 cycles), is comparable to that with HCE. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

193. The Survival Rate of Extremely Low Birth Weight Infants Improved in Guangdong Province, China

Author

Jia, Chun-Hong, primary, Feng, Zhou-Shan, additional, Lin, Xiao-Jun, additional, Cui, Qi-Liang, additional, Han, Sha-Sha, additional, Jin, Ya, additional, Liu, Guo-Sheng, additional, Yang, Chuan-Zhong, additional, Ye, Xiao-Tong, additional, Dai, Yi-Heng, additional, Liang, Wei-Yi, additional, Ye, Xiu-Zhen, additional, Mo, Jing, additional, Ding, Lu, additional, Wu, Ben-Qing, additional, Chen, Hong-Xiang, additional, Li, Chi-Wang, additional, Zhang, Zhe, additional, Rong, Xiao, additional, Huang, Wei-Min, additional, Shen, Wei, additional, Yang, Bing-Yan, additional, Lv, Jun-Feng, additional, Huo, Le-Ying, additional, Huang, Hui-Wen, additional, Rao, Hong-Ping, additional, Yan, Wen-Kang, additional, Yang, Yong, additional, Ren, Xue-Jun, additional, Liu, Dong, additional, Wang, Fang-Fang, additional, Diao, Shi-Guang, additional, Liu, Xiao-Yan, additional, You, Chu-Ming, additional, Meng, Qiong, additional, Wang, Bin, additional, Zhang, Li-Juan, additional, Huang, Yu-Ge, additional, Ao, Dang, additional, Li, Wei-Zhong, additional, Chen, Jie-Ling, additional, Chen, Yan-Ling, additional, Li, Wei, additional, Chen, Zhi-Feng, additional, Ding, Yue-Qin, additional, Li, Xiao-Yu, additional, Huang, Yue-Fang, additional, Lin, Ni-Yang, additional, Cai, Yang-Fan, additional, Wan, Zhong-He, additional, Ban, Yi, additional, Bai, Bo, additional, Li, Guang-Hong, additional, Yan, Yue-Xiu, additional, and Wu, Fan, additional

Published
2022
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results