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282 results on '"Wu, Xingqiang"'

2. The Construction of Multi-dimensional Course Model : Take the Data Structure Course As an Example

Author

Wang, Dan, Wu, Xingqiang, Liu, Chongkai, Li, Chanfei, Li, Kan, Editor-in-Chief, Li, Qingyong, Associate Editor, Fournier-Viger, Philippe, Series Editor, Hong, Wei-Chiang, Series Editor, Liang, Xun, Series Editor, Wang, Long, Series Editor, Xu, Xuesong, Series Editor, Kuang, Yunshan, editor, Zhu, Lixin, editor, Zhang, Xiangyang, editor, and Khan, Intakhab Alam, editor

Published
2024
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7. On the Innovation of Refined Scientific Research Management in Application-Oriented Universities in the Context of Big Data

Author

Wu, Xingqiang, Wang, Li, Dou, Runliang, Editor-in-Chief, Liu, Jing, Editor-in-Chief, Khasawneh, Mohammad T., Editor-in-Chief, Balas, Valentina Emilia, Series Editor, Bhowmik, Debashish, Series Editor, Khan, Khalil, Series Editor, Masehian, Ellips, Series Editor, Mohammadi-Ivatloo, Behnam, Series Editor, Nayyar, Anand, Series Editor, Pamucar, Dragan, Series Editor, Shu, Dewu, Series Editor, Akhtar, Nadeem, editor, Draman, Azah Kamilah, editor, and Abdollah, Mohd Faizal, editor

Published
2023
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14. Rapid determination of volatile benzene derivatives and chlorobenzenes in goat's milk by HS-SPME-GC-MS/MS.

Author

Qin, Jingyin, Tong, Kaixuan, Chang, Qiaoying, Xie, Yujie, Wu, Xingqiang, Fan, Chunlin, and Chen, Hui

Subjects
GOAT milk, TANDEM mass spectrometry, DAIRY products, CHLOROBENZENE, DETECTION limit
Abstract

A method for the determination of eight benzenes (BTEXs) and twelve chlorobenzenes (CBs) in goat's milk by headspace solid-phase microextraction-gas chromatography-mass spectrometry (HS-SPME-GC-MS/MS) was developed. The study investigated the impact of various factors such as extraction fiber type, salt amount, equilibrium conditions, and desorption conditions on the outcomes. Target analytes were separated on a DB-HeavyWAX column and quantified using the external standard method. The results showed that the target compounds had a good linear relationship in the range of 0.01 ∼ 50 μg/L (R2 > 0.997), the limit of detection (LOD) was 0.003 ∼ 0.150 μg/L, and the limit of quantification (LOQ) was 0.01 ∼ 0.50 μg/L. The average recoveries were 82%–116% and the relative standard deviation (RSD) was 0.8%–17.3% under the three addition levels of 1×, 2×, and 10 × LOQ. In a survey of twenty goat's milk samples, only ethylbenzene, xylenes, cumene, chlorobenzene, and 1,4-dichlorobenzene were detected at levels exceeding their respective limits of quantification. The method was evaluated using two ecological scales (Eco-Scale), GAPI and AGREEN, to verify its environmental friendliness and applicability. This method is simple, green, and efficient, which provides a certain theoretical basis for the production and quality safety evaluation of dairy products. [ABSTRACT FROM AUTHOR]

Published
2024
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48. Efficacy of a woodchip-sediment integrated system in nitrate elimination from wastewater with low C/N condition

Author

Tian Cuicui, Wang Chunbo, Hong Pei, Xiao Bangding, Wu Xingqiang, Oscar Omondi Donde, Gong Shihao, and Cai Qijia

Subjects
Total organic carbon, Denitrification, Hydraulic retention time, Stratigraphy, 04 agricultural and veterinary sciences, 010501 environmental sciences, 01 natural sciences, chemistry.chemical_compound, Wastewater, Nitrate, chemistry, Environmental chemistry, 040103 agronomy & agriculture, Bioreactor, 0401 agriculture, forestry, and fisheries, Environmental science, Sewage treatment, Eutrophication, 0105 earth and related environmental sciences, Earth-Surface Processes
Abstract

Currently, effective methods to eliminate nitrate in wastewater with a low C/N ratio are urgently needed. Considering that sediment is the main nitrogen removal carrier in lakes and that woodchip is an excellent carbon source, this study was undertaken under an integrated system of these two substances to explore the process and efficiency of the denitrification involved. Using methods of kinetics and molecular biology, denitrification processes involving a woodchip-sediment system were investigated in an up-flow bioreactor (UFBR). Performance indices, functional genes, and microbial community changes in this integrated system were explored through water quality monitoring, quantitative PCR, and high-throughput sequencing. When the hydraulic residence time reached above 3.82 days, the nitrate elimination efficiency could achieve an effective level of higher than 93.3% even under the different flow rates. It was also noted that the nitrate elimination rate in this integrated system fitted the Michaelis–Menten kinetics, a combination of zero-order equation (R2 > 0.98) and first-order equation (R2 > 0.95). A combination of zero-order kinetic equations of nitrate elimination and total organic carbon (TOC) release exhibited nitrate elimination efficiency under direct influence of TOC release rate on the C/N ratio. Microbiological analysis indicated co-existence of composting bacteria and denitrifiers as well as aerobic degradation and heterotrophic denitrification, with the former process providing effective carbon sources for the latter process. This study provided a deep insight into the denitrification process of a woodchip-sediment integrated system, which might inspire a potential wastewater treatment method for reduced eutrophication in the aquatic environment.

Published
2021
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