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The degradation pathways of contaminants by reactive oxygen species generated in the Fenton/Fenton-like systems

Chinese Chemical Letters 2024年第10期35卷 184-195页

作者： Chi Zhang Ning Ding yuwei pan Lichun Fu Ying Zhang Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution College of Environmental Science and Engineering Nankai University Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry Beijing Technology and Business University College of Biology and the Environment Nanjing Forestry University School of Iron and Steel Soochow University Key Laboratory of Pollution Process and Environmental Criteria Ministry of Education College of Environmental Science and Engineering Nankai University

Reactive oxygen species （ROSs） in Fenton process are of great importance in treating contaminants in *** is crucial to understand their chemical properties,formation,and reaction mechanisms with *** review summarizes the reactive oxygen species in Fenton process,including hydroxyl radical （·OH）,superoxide radical (O2·-),singlet oxygen （1O2）,hydroperoxyl radical （HO2·）,and high-valent iron.·OH shows a trend to react with chemistry groups with abundant electrons through H-atom abstraction,radical adduct formation and single electron *** transfer is discovered to be an important pathway when1O2degrades organic ***-opening and β-scission are proposed to be the possible ways of1O2to certain *** abstraction,nucleophilic substitution,and single electron transfer are proposed to explain how O2·-degrade *** the conjugated acid of O2·-,radical adduct formation and H-atom abstraction are reported for the reaction mechanisms of hydroperoxyl ***-valent iron in Fenton,namely Fe（IV）,reacts with certain pollutants via single-or two-electron *** review is important for researchers to understand the ROSs produced in Fenton and how they react with pollutants.

关键词： Fenton High-valent iron Hydroperoxyl radical Hydroxyl radical Singlet oxygen Superoxide radical

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Boron promoted Fe^(3+)/peracetic acid process for sulfamethazine degradation:Efficiency,role of boron,and identification of the reactive species

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Journal of Environmental Sciences 2024年第1期135卷 72-85页

作者： Yanhong Zhang Guangbing Liu Yuzhu Xue Lichun Fu Yawei Qian Minhui Hou Xiang Li Chen Ling Ying Zhang yuwei pan Jiangsu Provincial Key Laboratory of Environmental Engineering Jiangsu Provincial Academy of Environmental ScienceNanjing 210036China College of Biology and the Environment Nanjing Forestry UniversityNanjing 210037China School of Iron and Steel Soochow UniversitySuzhou 215000China School of the Environment Nanjing UniversityNanjing 210023China SUMEC Complete Equipment&Engineering Co. LTD.Nanjing 211500China Key Laboratory of Pollution Process and Environmental Criteria Ministry of EducationCollege of Environmental Science and EngineeringNankai UniversityTianjin 300350China School of Environment Key Laboratory for Yellow River and Huai River Water Environmental and Pollution ControlMinistry of EducationHenan Key Laboratory for Environmental Pollution ControlHenan Normal UniversityXinxiang 453007China

In this work,boron(B)was used to promote Fe^(3+)/peracetic acid(Fe^(3+)/PAA)for the degradation of sulfamethazine(SMT).An SMT degradation efficiency of 9.1%was observed in the Fe^(3+)/PAA system over 60 min,which was significantly increased to 99.3%in the B/Fe^(3+)/PAA system over 10 *** B/Fe^(3+)/PAA process also exhibited superior resistance to natural substances,excellent adaptability to different harmful substances,and good removal of antibiotics in natural fresh water *** mechanism of action of boron for Fe^(3+)reduction was determined using scanning electron microscopy(SEM),X-ray photoelectron spectroscopy(XPS),Fourier transform infrared(FT-IR)spectroscopy,density functional theory(DFT)calculations,and electrochemical *** dominant role of^(·)OH was confirmed using quenching experiments,electron spin resonance(EPR)spectroscopy,and quantitative *** radicals(R-O^(·))and Fe(IV)also significantly contribute to the removal of *** calculations on the reaction between Fe^(2+)and the PAA were conducted to further determine the contribution from ^(·)OH,R-O^(·),and Fe(IV)from the perspective of thermodynamics and the reaction *** boron dosages,Fe^(3+)dosages,and initial pH values were also investigated in the B/Fe^(3+)/PAA system to study their effect of SMT removal and the production of the reactive ***(IV)production determined the k_(R-O·+Fe(IV))value suggesting that Fe(IV)may play a more important role than R-O^(·).A comparison of the results with other processes has also proved that the procedure described in this study(B/Fe^(3+)/PAA)is an effective method for the degradation of antibiotics.

关键词： Boron Peracetic acid Sulfamethazine DFT Reactive species

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等离子体活化水对根癌土壤杆菌的抑制作用及其对樱花根癌病的防治

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北方园艺 2024年第9期 54-61页

作者：潘越司红波潘宇伟孙永莲南京林业大学实验室与基地建设管理处江苏南京210037 南京林业大学后勤管理处江苏南京210037

以樱花幼苗为试材,使用低温等离子体活化水冷杀菌技术(PAW)对樱花幼苗及其病原菌进行处理,研究了PAW对樱花苗木的抗病作用,以期为PAW在樱花根癌病防治中的应用提供参考依据。结果表明:等离子体活化水能有效地抑制樱花根癌病病菌Agrobact... 详细信息

以樱花幼苗为试材,使用低温等离子体活化水冷杀菌技术(PAW)对樱花幼苗及其病原菌进行处理,研究了PAW对樱花苗木的抗病作用,以期为PAW在樱花根癌病防治中的应用提供参考依据。结果表明:等离子体活化水能有效地抑制樱花根癌病病菌Agrobacterium tumefaciens的生长,其可以对Agrobacterium tumefaciens的细胞结构造成破坏。CK组樱花幼苗的根瘤发生率为100%,根瘤的平均直径为18.8 mm,处理后的幼苗发病率为56.7%,根瘤的平均直径为8.4 mm。此外,PAW可以提高樱花根系多酚氧化酶(PPO)和苯丙氨酸解氨酶(PAL)及超氧化物歧化酶(SOD)活性的表达,激活樱花植株的抗性。综上,PAW具有一定的生物防治潜力,可以防御樱花根癌病。

关键词：樱花根癌病 Agrobacterium tumefaciens 等离子体活化水

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脐带间充质干细胞对2型糖尿病的免疫调节作用

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中国组织工程研究 2025年第23期29卷 5031-5040页

作者：陈春兰叶美仪潘雨薇袁佳周朋君广东药科大学药学院药理系广东省广州市510006 广州医科大学附属中医医院治未病科广东省广州市510130 广东省中西医结合医院康复科广东省佛山市528200 暨南大学生科院生物医药基地广东省广州市510632

背景:脐带间充质干细胞具有免疫调节功能和多向分化潜能,能够积极改善2型糖尿病的慢性低度炎症状态,对阻止2型糖尿病疾病进展具有重要意义。目的:综述脐带间充质干细胞通过免疫调节作用治疗2型糖尿病的研究进展。方法:以“脐带间充质干... 详细信息

背景:脐带间充质干细胞具有免疫调节功能和多向分化潜能,能够积极改善2型糖尿病的慢性低度炎症状态,对阻止2型糖尿病疾病进展具有重要意义。目的:综述脐带间充质干细胞通过免疫调节作用治疗2型糖尿病的研究进展。方法:以“脐带间充质干细胞,间充质干细胞,2型糖尿病,免疫,胰岛素抵抗,炎症”等为中文检索词,以“umbilical cord mesenchymal stem cells,UC-MSCs,mesenchymal stem cells,MSCs,type 2 diabetes mellitus,T2DM,immunity,insulin resistance,inflammation”等为英文检索词,在中国知网、Web of Science和PubMed数据库筛选相关的综述、研究型论文和论著,根据纳入标准和排除标准整理出88篇论文进行归纳总结。结果与结论:脐带间充质干细胞可通过免疫调节作用降低机体炎症反应、诱导巨噬细胞向M2型极化,增加靶器官对胰岛素敏感性,改善胰岛素抵抗,缓解胰岛β细胞功能障碍等,进而有效延缓2型糖尿病发生发展。但在脐带间充质干细胞移植成为常规治疗手段之前,还需要进行大规模的基础与应用基础研究以确定其最佳治疗方案及疗效。

关键词：脐带间充质干细胞 2型糖尿病免疫胰岛素抵抗炎症巨噬细胞

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二镀锌钝化吹扫系统设备的优化与改进

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冶金设备管理与维修 2024年第3期42卷 5-7页

作者：潘玉维蔡振华张立新河钢股份有限公司唐山分公司冷轧薄板厂河北唐山063016

针对唐钢冷轧二镀锌高强度结构钢品种多,相比薄规格冷基镀锌板型不易控制,加之机组一直沿用喷淋式钝化,生产时会出现钝化斑迹、边部黄边、干燥不彻底、带钢表面划伤等缺陷。运用流体运动学,对钝化系统喷嘴数量、角度进行优化,对钝化系... 详细信息

针对唐钢冷轧二镀锌高强度结构钢品种多,相比薄规格冷基镀锌板型不易控制,加之机组一直沿用喷淋式钝化,生产时会出现钝化斑迹、边部黄边、干燥不彻底、带钢表面划伤等缺陷。运用流体运动学,对钝化系统喷嘴数量、角度进行优化,对钝化系统辊系、边部吹扫等设备也进行一系列优化改造,板带质量明显提升。

关键词：钝化喷嘴边部吹扫

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Surgical treatment effects in cancer of the cardia and esophagogastric junction

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The Chinese-German Journal of Clinical Oncology 2007年第3期6卷 220-221页

作者： Yumin Zhou Jiong pan yuwei Sheng Hao Liu Ziping Fan Department of Surgery Baoshan Branch of Shanghai First People＇s Hospital Shanghai 200940 China

Objective： To evaluate the treatment effects of total gastrectomy （TG） and proximal gastrectomy （PG） for cancer of the cardia and esophagogastric junction. Methods： forty-five patients with cancer of the cardia and esophagogastric junction underwent surgical resection. Of them, 29 were treated using proximal gastrectomy and 16 total gastrectomy. The 3-year and 5-year survival rate and the postoperative complication rate and mortality rate were followed up and compared between the two groups. Results： The 3-year and 5-year survival rates of group PG were 44.8% and 20.7%, of group TG were 37.5% and 18.8%, respectively, and the differences were not statistically significant （X^2= 3.84, P 〉 0.05; X^2= 3.89, P 〉 0.05）. The postoperative complication and mortality rate of group PG were 13.7% and 6.8%, of group TG was all 6%, respectively. Conclusion： Proximal and total gastrectomy treatment effects can not significantly influence the prognosis of patients in progressive stage of cancer of cardia and esophagogastric junction.

关键词： stomach neoplasms surgical procedures, operative survival rate

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Wearable and interactive multicolored photochromic fiber display

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Light(Science & Applications) 2024年第3期13卷 454-465页

作者： pan Li yuwei Wang Xiaoxian He Yuyang Cui Jingyu Ouyang Ju Ouyang Zicheng He Jiayu Hu Xiaojuan Liu Hang Wei Yu Wang Xiaoling Lu Qian Ji Xinyuan Cai Li Liu Chong Hou Ning Zhou Shaowu pan Xiangru Wang Huamin Zhou Cheng-Wei Qiu Yan-Qing Lu Guangming Tao State Key Laboratory of Material Processing and Die&Mould Technology School of Materials Science and Engineering and Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan 430074China Key Laboratory of Vascular Aging(HUST) Ministry of EducationWuhan 430030China School of Optoelectronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu 611731China Department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore National Laboratory of Solid State Microstructures Key Laboratory of Intelligent Optical Sensing and ManipulationCollege of Engineering and Applied Sciencesand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210023China School of Performing Arts Wuhan Conservatory of MusicWuhan 430060China School of Mechanical Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China School of Architecture and Urban Planning Huazhong University of Science and TechnologyWuhan 430074China School of Fashion Beijing Institute of Fashion TechnologyBeijing 100029China School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China Tongji Medical College Huazhong University of Science and TechnologyWuhan 430074China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China

Endowing flexible and adaptable fiber devices with light-emitting capabilities has the potential to revolutionize the current design philosophy of intelligent,wearable interactive ***,significant challenges remain in developing fiber devices when it comes to achieving uniform and customizable light effects while utilizing lightweight ***,we introduce a mass-produced,wearable,and interactive photochromic fiber that provides uniform multicolored light *** designed independent waveguides inside the fiber to maintain total internal reflection of light as it traverses the *** impact of excessive light leakage on the overall illuminance can be reduced by utilizing the saturable absorption effect of fluorescent materials to ensure light emission uniformity along the transmission *** addition,we coupled various fluorescent composite materials inside the fiber to achieve artificially controllable spectral radiation of multiple color systems in a single *** prepared fibers on mass-produced kilometer-long using the thermal drawing *** fibers can be directly integrated into daily wearable devices or clothing in various patterns and combined with other signal input components to control and display patterns as *** work provides a new perspective and inspiration to the existing field of fiber display interaction,paving the way for future human–machine integration.

关键词： fiber interactive colored

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Overcoming genotypic dependency and bypassing immature embryos in wheat transformation by using morphogenic regulators

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Science China(Life Sciences) 2024年第7期67卷 1535-1538页

作者： Ziru Zhou Yawen Yang Guo Ai Miaomiao Zhao Baozhu Han Chunjie Zhao Yiqian Chen yuwei Zhang Hong pan Caixia Lan Chao He Qiang Li Jieting Xu Wenhao Yan National Key Laboratory of Crop Genetic Improvement Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhan 430070China WIMI Biotechnology Co. Ltd.Changzhou 213025China

Dear Editor,Agrobacterium-mediated transformation technology is of vital importance for functional genomics studies and precision breeding in crops due to low cost and clear genetic manifestation.A morphogenic gene pa... 详细信息

关键词： breeding crops transformation

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钛基复合材料TIG焊接接头的显微组织和拉伸性能

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机械工程材料 2020年第5期44卷 1-5,53页

作者：潘玉维毛建伟张立新唐山钢铁集团有限责任公司唐山063016 上海交通大学金属基复合材料国家重点实验室上海200240

采用非熔化极惰性气体钨极保护(TIG)焊技术对非连续增强钛基复合材料进行焊接,研究了焊接接头的显微组织与拉伸性能。结果表明:TIG焊接可较好地实现钛基复合材料的连接,焊缝成形良好,表面均匀洁净,未见微裂纹、气孔等焊接缺陷;接头由焊... 详细信息

采用非熔化极惰性气体钨极保护(TIG)焊技术对非连续增强钛基复合材料进行焊接,研究了焊接接头的显微组织与拉伸性能。结果表明:TIG焊接可较好地实现钛基复合材料的连接,焊缝成形良好,表面均匀洁净,未见微裂纹、气孔等焊接缺陷;接头由焊缝区、热影响区和母材区组成;接头中焊缝区和靠近焊缝的热影响区中β相晶界上分布的增强体TiB具有较高的长径比,细化程度较高,同时焊缝区和靠近焊缝的热影响区中存在大量针状马氏体α′相;接头的抗拉强度为1 137MPa,为母材的92%,断后伸长率为2.20%;接头拉伸时均在母材区断裂,拉伸断口主要呈韧性断裂特征,部分区域呈沿晶断裂特征。

关键词：非熔化极惰性气体钨极保护焊钛基复合材料增强体显微组织拉伸性能

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新安江模型与DHSVM在中小流域的比较研究

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水力发电 2015年第4期41卷 15-18页

作者：潘宇微张行南夏达忠石超河海大学水文水资源学院江苏南京210098 河海大学水资源高效利用与工程安全国家工程研究中心江苏南京210098

水文模型是研究流域产汇流机制的重要工具。选用新安江模型作为概念性模型代表,DHSVM模型作为分布式模型代表,从研究背景、结构原理、模型输入、参数率定以及模拟结果等方面对两个模型进行比较,以平通河流域为例进行分析。结果表明,新... 详细信息

水文模型是研究流域产汇流机制的重要工具。选用新安江模型作为概念性模型代表,DHSVM模型作为分布式模型代表,从研究背景、结构原理、模型输入、参数率定以及模拟结果等方面对两个模型进行比较,以平通河流域为例进行分析。结果表明,新安江模型和DHSVM模型的径流深相对误差均在15%以下,且两个模型相差不大,新安江模型及DHSVM模型均能适用于平通河流域。

关键词：新安江模型 DHSVM模型平通河流域

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