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5 results on '"Yuji Wu"'

1. Synergistic Single-Atom and Clustered Cobalt Sites on N/S Co-Doped Defect Nano-Carbon for Efficient H2O2 Electrosynthesis

Author

Yuzhong Huang, Chang Zhang, Xingyu Wang, Yuji Wu, Jun Lv, Jian Zhang, Wangqiang Shen, and Xing Lu

Subjects
Non-noble metal-based materials, Fullerene, Single atomic catalysts, Oxygen reduction reaction, Hydrogen peroxide electroproduction, Technology
Abstract

Highlights Defect-rich nanocarbon catalyst (CoSA/CoNP-NSDNC) synthesized using NSCo single atoms and Co nanoparticle clusters on fullerene-derived carbon framework, enabling efficient H2O2 electrosynthesis. The CoSA/CoNP-NSDNC catalyst exhibits high H2O2 selectivity (~ 90%) over a wide potential range with an onset potential of 0.72 V versus RHE, achieving Faraday efficiency close to 95% in acidic conditions. Demonstrates potential for environmental applications, achieving high H2O2 production (4206.96 mmol g−1 h−1) in a flow cell setup, along with efficient degradation of organic pollutants in Fenton-like reactions.

Published
2025
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2. Multiphase strengthening mechanism of Cu-Y2O3/W composites prepared by mechanical alloying

Author

Xueyang Sheng, Bing Ma, Laima Luo, Jie Xu, Yoshimitsu Hishinuma, Yuji Wu, Jiaqin Liu, and Yucheng Wu

Subjects
Multiphase-coupled strengthening, Cu-Y2O3/W, Mechanical alloying, molar ratio of W and Y2O3, Nuclear engineering. Atomic power, TK9001-9401
Abstract

To prepare high-performance copper-based composites, Y2O3/W multiphase reinforced copper-based composites were synthesized through mechanical alloying and spark plasma sintering, and the mole ratio of W and Y2O3 was explored. It is found that the incorporation of W inhibited the growth of copper particle during ball milling, and facilitated the refinement of Y2O3. Compared to conditions without W addition, the Y2O3 particle diameter reduced from 97.96 nm to 33.4 nm when same mole W was added. Furthermore, copper grains were refined, resulting in a higher tensile strength of 305 MPa and elongation of 15.6 %. At 400 °C, the 5:5 sample exhibited a higher thermal conductivity of 299 W/(m·K). Nano-scale particles were uniformly distributed within the copper matrix, and the interaction between W and Y2O3 inhibited nanoparticle coarsening, leading to the formation of a more stable Y2WO6 phase during sintering, which is also better for the purification of the copper matrix.

Published
2024
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3. Storage and encryption of submicron spatial resolution X-ray images based on Ag-doped phosphate glass

Author

Yucheng Li, Kuan Ren, Shuai Cheng, Yahua Hu, Xuechun Yang, Shutong Hao, Shenye Liu, Naixin Li, Zhan Xu, He Feng, Xing Zhang, Tao Xu, Xiaoyan Zhou, Yuji Wu, Zhenghua Yang, Pin Yang, Jianjun Dong, Yulong Li, Huiyue Wei, Xiaoshi Peng, Xiangming Liu, Zanyang Guan, Zhiwen Yang, Jin Li, Yunsong Dong, Dong Yang, Tao Yi, Jiamin Yang, Yongkun Ding, Zhixiang Sun, Xiaolin Liu, Mu Gu, Jingtai Zhao, Guang Yang, and Qianli Li

Subjects
Mechanics of Materials, Mechanical Engineering, Materials Chemistry, Metals and Alloys
Published
2023
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4. A prospective and randomised trial comparing fluoroscopic, total ultrasonographic, and combined guidance for renal access in mini-percutaneous nephrolithotomy

Author

Ze Zhang, Zhaohui He, Suilin Lu, Jin-tai Luo, Guohua Zeng, Dongliang Zhong, Guanzhao Liu, Wenzhong Chen, Wei Zhu, Jiasheng Li, Defeng Qi, Ming Lei, Yongda Liu, Wenqi Wu, Shaw P. Wan, Wen Zhong, Jian Yuan, Yuji Wu, and Zhijian Zhao

Subjects
Male, medicine.medical_specialty, Percutaneous, Urology, medicine.medical_treatment, 030232 urology & nephrology, law.invention, 03 medical and health sciences, Kidney Calculi, 0302 clinical medicine, Randomized controlled trial, law, Lithotripsy, medicine, Humans, Minimally Invasive Surgical Procedures, Prospective Studies, Percutaneous nephrolithotomy, Nephrostomy, Percutaneous, Ultrasonography, Analgesics, business.industry, Postoperative complication, Middle Aged, medicine.disease, Surgery, Radiation exposure, Treatment Outcome, 030220 oncology & carcinogenesis, Fluoroscopy, Nephrostomy, Kidney stones, Female, business, Mini percutaneous nephrolithotomy
Abstract

Objective To compare the safety and efficacy of fluoroscopic guidance (FG), total ultrasonographic guidance (USG), and combined ultrasonographic and fluoroscopic guidance (CG) for percutaneous renal access in mini-percutaneous nephrolithotomy (mini-PCNL). Patients and methods The present study was conducted between July 2014 and May 2015 as a prospective randomised trial at the First Affiliated Hospital of Guangzhou Medical University. In all, 450 consecutive patients with renal stones of >2 cm were randomised to undergo FG, USG, or CG mini-PCNL (150 patients for each group). The primary endpoints were the stone-free rate (SFR) and blood loss (haemoglobin decrease during the operation and transfusion rate). Secondary endpoints included access failure rate, operating time, and complications. S.T.O.N.E. score was used to document the complexity of the renal stones. The study was registered at http://clinicaltrials.gov/ (NCT02266381). Results The three groups had similar baseline characteristics. With S.T.O.N.E. scores of 5–6 or 9–13, the SFRs were comparable between the three groups. For S.T.O.N.E. scores of 7–8, FG and CG achieved significantly better SFRs than USG (one-session SFR 85.1% vs 88.5% vs 66.7%, P = 0.006; overall SFR at 3 months postoperatively 89.4% vs 90.2% vs 69.8%, P = 0.002). Multiple-tracts mini-PCNL was used more frequently in the FG and CG groups than in the USG group (20.7% vs 17.1% vs 9.5%, P = 0.028). The mean total radiation exposure time was significantly greater for FG than for CG (47.5 vs 17.9 s, P < 0.001). The USG had zero radiation exposure. There was no significant difference in the haemoglobin decrease, transfusion rate, access failure rate, operating time, nephrostomy drainage time, and hospital stay among the groups. The overall operative complication rates using the Clavien–Dindo grading system were similar between the groups. Conclusions Mini-PCNL under USG is as safe and effective as FG or CG in the treatment of simple kidney stones (S.T.O.N.E. scores 5–6) but with no radiation exposure. FG or CG is more effective for patients with S.T.O.N.E. scores of 7–8, where multiple percutaneous tracts may be necessary.

Published
2016

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