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Your search keyword '"Li, Qichao"' showing total 24 results
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24 results on '"Li, Qichao"'

17. A Case of Weissella confusa Isolated from Blood of a Patient with Coronary Heart Disease Complicated with Gastrointestinal Bleeding

Author

Wang,Xiaosu, Zhang,Dan, Dai,Zheng, Yu,Jingdan, Li,Qichao, and Zhang,Litao

Subjects
Infection and Drug Resistance
Abstract

Xiaosu Wang,* Dan Zhang,* Zheng Dai, Jingdan Yu, Qichao Li, Litao Zhang Department of Clinical Laboratory, Wuhan Asia General Hospital, Wuhan Asia General Hospital Affiliated to Wuhan University of Science and Technology, Wuhan, Hubei Province, 430056, People’s Republic of China*These authors contributed equally to this workCorrespondence: Litao Zhang, Email dandanzhangnihao@126.comIntroduction: W. confusa has been known to cause various human infections. It is naturally resistant to vancomycin and is difficult to identify using traditional methods, which may lead to misidentification and delay treatment.Case Presentation: We present a case of a 42-year-old male patient with gastrointestinal bleeding and coronary heart disease who developed sepsis caused by Weissella confusa. The patient’s blood cultures showed the presence of gram-positive coccobacilli, later identified as W. confusa through matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). Antimicrobial susceptibility testing revealed that W. confusa had low minimum inhibitory concentrations (MICs) for some drugs (eg, ampicillin) and higher MICs for others (eg, cefotaxime). Empirical treatment with vancomycin was initially started, but after obtaining the identification and susceptibility results, the treatment was switched to meropenem combined with daptomycin, resulting in a successful outcome.Conclusion: Weissella confusa bacteremia is relatively rare, and accurate pathogenic diagnosis is essential for effective clinical treatment.Keywords: Weissella confusa, bacterial identification, 16S rRNA, matrix-assisted laser desorption/ionization time-of-flight mass spectrometry

Published
2023

21. Biomimetic Self-Assembling Metal–Organic Architectures with Non-Iridescent Structural Coloration for Synergetic Antibacterial and Osteogenic Activity of Implants

Author

Zhang, Chunlei, primary, Chu, Guangyu, additional, Ruan, Zesong, additional, Tang, Ning, additional, Song, Cunfeng, additional, Li, Qichao, additional, Zhou, Wenjie, additional, Jin, Jiale, additional, Haick, Hossam, additional, Chen, Yunfeng, additional, and Cui, Daxiang, additional

Published
2022
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24. Selective Catalytic Removal of High Concentrations of NO x at Low Temperature.

Author

Yu, Bo, Liu, Qing, Yang, Heng, Li, Qichao, Lu, Hanjun, Yang, Li, and Liu, Fang

Subjects
LOW temperatures, CATALYTIC activity, CHEMICAL properties, GAS flow, CATALYST testing
Abstract

Three vanadium-based catalysts were used to remove high concentrations of nitrogen oxides, and the catalysts' performance of de-NOx and anti-H2O under the high concentrations of NOx were investigated. The V-Mo-W/TiO2 catalysts were tested under 1500 mL/min gas flow (GHSV = 500 h−1, 2.4% NO2, 4.78% NH3, 13% O2, 4% H2O, 5% CO2) and characterized by BET, SEM, EDS, XRD, XPS, H2-TPR, and NH3-TPD; then, their physical and chemical properties were analyzed. The results showed that under the influence of H2O, the NOx conversion of the V-Mo-W/TiO2 catalysts remained above 97% at 200–280 °C indicating that the catalysts had high catalytic activity and strong water resistance. The analysis of the characterization results showed that the larger specific surface area of the catalyst, the higher acid content, stronger redox ability, and higher V4+ and V3+ content were the reasons for the high NOx conversion. The surface area decreased and the microstructure become smoother after the reaction, which may be caused by thermal sintering, but the overall morphology did not change. Comparing the H2-TPR and NH3-TPD of V1.6Mo1.7W1.8/TiO2 before and after NH3-SCR reaction, it was found that the reduction peak and the intensity of the acid sites of the sample had not changed, which indicated that the catalyst had good anti-sintering performance and a long lifetime. This is significant for followup long-term engineering application experiments. [ABSTRACT FROM AUTHOR]

Published
2022
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