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Coupling of sulfur and boron in carbonaceous material to strengthen persulfate activation for antibiotic degradation:Active sites,mechanism,and toxicity assessment

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Chinese Chemical Letters 2023年第5期34卷 292-301页

作者： Feng Ye Wei Sun kangfeng pang Wenchao Yang Mengjie Pu Qichun Zhang Research Center for Eco-environmental Engineering Dongguan University of TechnologyDongguan 523830China Guangling College and School of Horticulture and Plant Protection Yangzhou UniversityYangzhou 225009China College of Life and Environmental Science Wenzhou UniversityWenzhou 325035China Center of Super-Diamond and Advanced Films(COSDAF) City University of HongkongHong KongChina

Carbon-mediated persulfate advanced oxidation processes(PS-AOPs)are appealing in contaminant remediation.For the first time,S,B-co-doped carbon-based persulfate activators were synthesized through direct carbonization of sodium lignosulfonate and boric acid.By degrading sulfamethoxazole(SMX),CSB-750 obtained 98.7%removal and 81.4%mineralization within 30 min.In comparison with solo S or B doping,S and B co-doped carbon showed the coupling effect for enhanced catalysis.The rate constant(kobs)of 0.1679 min^(-1)was 22.38-and 279.83-fold higher than those of CS-750(0.0075 min^(-1))and CB-750(0.0006 min^(-1)),respectively.The degradation was efficient at strong acidic and weak basic conditions(pH 3-9).Substantial inhibition effect was presented at strong basic condition(pH 10.95)and in presence of CO_(3)^(2-).The CO_(3)^(2-)-caused inhibition was the combined result of the cooperation of pH and quenching O_(2)^(·-).Thiophene sulfur,BC_(3),BC_(2)O,and structural defects were identified as the active sites for PS activation.Radical and nonradical pathways were both involved in the CSB-750/PS/SMX system,where^(1)O_(2)dominated the degradation,SO_(4)^(·-),·OH and direct electron transfer played the subordinate role,and O_(2)^(·-)served as a precursor for the formation of partial^(1)O_(2).The toxicity of degradation system,the effect of real water matrix,and the reusability of carbocatalysts were comprehensively analyzed.Nine possible degradation pathways were proposed.This work focuses on the catalytic performance improvement through the coupling effect of S,B co-doping,and develops an advanced heteroatom doping system to fabricate carbonaceous persulfate activators.

关键词： S B-co-doped carbons Advanced oxidation process Nonradical pathway Coupling effect

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Superhydrophobic Surface-Assisted Preparation of Microspheres and Supraparticles and Their Applications

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Nano-Micro Letters 2024年第4期16卷 110-138页

作者： Mengyao Pan Huijuan Shao Yue Fan Jinlong Yang Jiaxin Liu Zhongqian Deng Zhenda Liu Zhidi Chen Jun Zhang kangfeng Yi Yucai Su Dehui Wang Xu Deng Fei Deng Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 611731People’s Republic of China School of Materials Science and Engineering Sun Yat-Sen UniversityGuangzhou 510275People’s Republic of China Shenzhen Institute for Advanced Study University of Electronic Science and Technology of ChinaShenzhen 518110People’s Republic of China Pharmaceutical Glass Co.Ltd Zibo 256100People’s Republic of China Department of Nephropathy School of MedicineSichuan Provincial People’s HospitalUniversity of Electronic Science and Technology of ChinaChengduPeople’s Republic of China Department of Nephrology Sichuan Provincial People’s Hospital Jinniu HospitalChengdu Jinniu District People’s HospitalChengduPeople’s Republic of China

Superhydrophobic surface(SHS) has been well developed, as SHS renders the property of minimizing the water/solid contact interface. Water droplets deposited onto SHS with contact angles exceeding 150°, allow them to retain spherical shapes, and the low adhesion of SHS facilitates easy droplet collection when tilting the substrate. These characteristics make SHS suitable for a wide range of applications. One particularly promising application is the fabrication of microsphere and supraparticle materials. SHS offers a distinct advantage as a universal platform capable of providing customized services for a variety of microspheres and supraparticles. In this review, an overview of the strategies for fabricating microspheres and supraparticles with the aid of SHS, including cross-linking process, polymer melting,and droplet template evaporation methods, is first presented. Then, the applications of microspheres and supraparticles formed onto SHS are discussed in detail, for example, fabricating photonic devices with controllable structures and tunable structural colors, acting as catalysts with emerging or synergetic properties, being integrated into the biomedical field to construct the devices with different medicinal purposes, being utilized for inducing protein crystallization and detecting trace amounts of analytes. Finally,the perspective on future developments involved with this research field is given, along with some obstacles and opportunities.

关键词： Superhydrophobic surface Microspheres and supraparticles Photonic devices Catalysts Biomedical and trace detections

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颈动脉最大斑块面积纵向变化轨迹与新发心血管疾病的队列研究

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中国慢性病预防与控制 2024年第2期32卷 106-110页

作者：吴都陆梅佳张康峰杭州市五云山医院(杭州市健康促进研究院)健康管理中心浙江省杭州310009

目的探讨颈动脉最大斑块面积纵向轨迹对新发心血管疾病(CVD)的预测价值,为CVD的防治提供科学依据。方法选择在杭州市五云山医院连续参加2014、2015、2016、2017和2018年5次健康体检的65岁及以上体检人群作为研究对象,回顾性分析2014—2... 详细信息

目的探讨颈动脉最大斑块面积纵向轨迹对新发心血管疾病(CVD)的预测价值,为CVD的防治提供科学依据。方法选择在杭州市五云山医院连续参加2014、2015、2016、2017和2018年5次健康体检的65岁及以上体检人群作为研究对象,回顾性分析2014—2018年度5次健康体检时的颈动脉最大斑块面积数值。以2018年度健康体检时点为随访起点,以发生CVD为随访终点,排除不能遵守随访方案、自愿退出研究者共30例,最终纳入研究对象411例,依据颈动脉最大斑块面积纵向轨迹分为低水平渐增组(198例)、中水平渐增组(174例)、高水平升高组(20例)和先升后降组(19例)。基线调查和随访调查均包括病史采集、体格检查、实验室检查和颈动脉超声检查。采用R 4.2.1统计软件中的潜变量混合增长模型(LCMM)建立颈动脉最大斑块面积轨迹模型,采用SPSS 26.0软件进行单因素方差分析、Kruskal-Wallis秩和检验、χ^(2)检验、χ^(2)_(趋势)检验、Cox比例风险回归模型分析。结果随访(3.57±1.03)年,新发CVD 70例,发病密度为4.78/100人年。随着颈动脉最大斑块面积纵向轨迹的升高,CVD的发病密度呈上升趋势(χ^(2)_(趋势)=22.221,P<0.01),高水平升高组发病密度最高,为20.37/100人年。Cox比例风险回归模型分析结果显示,校正混杂因素后,高水平升高组CVD的发病风险是低水平渐增组的8.787倍(95%CI:3.684~20.955),差异有统计学意义(P<0.05)。结论65岁及以上老年人群颈动脉最大斑块面积存在不同纵向变化轨迹,且不同纵向轨迹对新发CVD的预测价值不同,颈动脉最大斑块面积纵向轨迹高水平升高老年人群CVD发生风险高。

关键词：颈动脉最大斑块面积纵向轨迹心血管疾病队列研究

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传播符号学视阈下中国体育新闻娱乐化现象研究——以改革开放40年为研究中心

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武术研究 2024年第1期9卷 137-140页

作者：王康锋张祎诺无广西民族师范学院体育学院广西崇左532200 广西民族师范学院文学与传媒学院广西崇左532200 云南体育运动职业技术学院云南昆明650228

传播符号作为体育新闻传播不可或缺的因素,历经数十年的发展,逐渐形成较为完整的体系。与此同时,伴随着体育事业的产业化、经济化发展,体育新闻娱乐化也逐渐发展成为体育新闻传播的一大主流趋势。文章运用文献资料法和逻辑分析法等研究... 详细信息

传播符号作为体育新闻传播不可或缺的因素,历经数十年的发展,逐渐形成较为完整的体系。与此同时,伴随着体育事业的产业化、经济化发展,体育新闻娱乐化也逐渐发展成为体育新闻传播的一大主流趋势。文章运用文献资料法和逻辑分析法等研究方法,研究体育新闻中传播符号的演变,在此基础上分析体育新闻娱乐化现象的建构和发展历程,并对体育新闻娱乐化现象产生的问题进行分析。研究认为:体育新闻娱乐化存在降低媒体公信力、影响受众价值观、影响当事人利益等负面效应,针对出现的问题,结合传播符号发展趋势,提出打造具有中国特色的体育符号,提升传播受众及媒体素质,完善传播符号管控制度等一系列对策,为体育新闻的良性发展提供可行性建议。

关键词：体育新闻传播符号娱乐化

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高温地区施工盾构冷却系统研究

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建筑机械化 2024年第4期45卷 21-24,79页

作者：赵石李太运赵康峰中铁工程装备集团有限公司河南郑州450016

对高温地区盾构施工中元器件温度以及环境温度异常问题产生的原因进行分析,提出优化冷却系统的处理措施。并以多哈某项目为背景,通过热力学公式计算分析盾构机各部件发热和散热情况,对通风制冷和水冷系统进行原理分析和理论计算,提出了... 详细信息

对高温地区盾构施工中元器件温度以及环境温度异常问题产生的原因进行分析,提出优化冷却系统的处理措施。并以多哈某项目为背景,通过热力学公式计算分析盾构机各部件发热和散热情况,对通风制冷和水冷系统进行原理分析和理论计算,提出了新的冷却水系统。

关键词：盾构施工发热通风制冷冷却系统

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昆明地区某奶牛场致犊牛腹泻大肠杆菌的分离鉴定及生物学特性分析

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中国兽医学报 2024年第3期44卷 465-471页

作者：杨静吴玉斯那白木刘凇昊江康峰李小兵云南农业大学动物医学院云南昆明650201 云南省德钦县畜牧水产管理服务中心云南香格里拉674500

为查明昆明地区某奶牛场致犊牛腹泻细菌性病原及其生物学特征,对腹泻犊牛粪便进行细菌分离培养、生化试验和16S rRNA序列分析以鉴定细菌种类,并对分离菌株进行致病性试验、血清型鉴定、毒力基因检测、药敏试验、耐药基因检测和种群分型... 详细信息

为查明昆明地区某奶牛场致犊牛腹泻细菌性病原及其生物学特征,对腹泻犊牛粪便进行细菌分离培养、生化试验和16S rRNA序列分析以鉴定细菌种类,并对分离菌株进行致病性试验、血清型鉴定、毒力基因检测、药敏试验、耐药基因检测和种群分型鉴定。结果显示,从腹泻犊牛粪便中共分离鉴定4株强致病性的大肠杆菌,O3、O4、O103为优势血清型;4株致病性大肠杆菌对庆大霉素、头孢唑林、氯霉素、环丙沙星、诺氟沙星均表现强耐药性,而对丁胺卡拉表现为中度敏感;分离菌株携带blaOXA、blaTEM、aac(6′)-Ib、oqxAB、aadA1共5种耐药基因及fimH、Crl、iucD、astA、hlyE、ompA、ompC、K88、papC等9种毒力基因,且4株致病菌均为B2型大肠杆菌。结果表明,导致昆明地区某奶牛场犊牛腹泻的病原为B2型致病性大肠杆菌,并对临床上常见的抗生素表现较强的耐药性,且携带多种耐药基因与毒力基因。本研究为该奶牛场犊牛腹泻选择有效的治疗药物提供了参考依据。

关键词：犊牛腹泻致病性大肠杆菌血清型耐药基因毒力基因种群分型

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C2Net-YOLOv5: A Bidirectional Res2Net-Based Traffic Sign Detection Algorithm

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Computers, Materials & Continua 2023年第11期77卷 1949-1965页

作者： Xiujuan Wang Yiqi Tian kangfeng Zheng Chutong Liu Faculty of Information Technology Beijing University of TechnologyBeijing100124China School of Cyberspace Security Beijing University of Posts and TelecommunicationsBeijing100048China Fan Gongxiu Honors College Beijing University of TechnologyBeijing100124China

Rapid advancement of intelligent transportation systems(ITS)and autonomous driving(AD)have shown the importance of accurate and efficient detection of traffic signs.However,certain drawbacks,such as balancing accuracy and real-time performance,hinder the deployment of traffic sign detection algorithms in ITS and AD domains.In this study,a novel traffic sign detection algorithm was proposed based on the bidirectional Res2Net architecture to achieve an improved balance between accuracy and speed.An enhanced backbone network module,called C2Net,which uses an upgraded bidirectional Res2Net,was introduced to mitigate information loss in the feature extraction process and to achieve information complementarity.Furthermore,a squeeze-and-excitation attention mechanism was incorporated within the channel attention of the architecture to perform channel-level feature correction on the input feature map,which effectively retains valuable features while removing non-essential features.A series of ablation experiments were conducted to validate the efficacy of the proposed methodology.The performance was evaluated using two distinct datasets:the Tsinghua-Tencent 100K and the CSUST Chinese traffic sign detection benchmark 2021.On the TT100K dataset,the method achieves precision,recall,and Map0.5 scores of 83.3%,79.3%,and 84.2%,respectively.Similarly,on the CCTSDB 2021 dataset,the method achieves precision,recall,and Map0.5 scores of 91.49%,73.79%,and 81.03%,respectively.Experimental results revealed that the proposed method had superior performance compared to conventional models,which includes the faster region-based convolutional neural network,single shot multibox detector,and you only look once version 5.

关键词： Target detection traffic sign detection autonomous driving YOLOv5

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水中运动疗法对常见慢性病干预效果的研究进展

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体育科技文献通报 2024年第2期32卷 236-241页

作者：文凡朱欢王康锋庹艳芳胡江平湖北民族大学体育学院湖北恩施445000 广西民族师范学院体育学院广西崇左532200

目的:通过文献综述法总结水中运动对常见慢性疾病患者的干预治疗效果,为慢性病的水中疗法提供理论依据及实践方案参考。研究结果表明:①常见水中治疗方式为有氧运动、抗阻运动及高强度间歇运动等。相比于陆上运动,水中运动具有运动损伤... 详细信息

目的:通过文献综述法总结水中运动对常见慢性疾病患者的干预治疗效果,为慢性病的水中疗法提供理论依据及实践方案参考。研究结果表明:①常见水中治疗方式为有氧运动、抗阻运动及高强度间歇运动等。相比于陆上运动,水中运动具有运动损伤风险低、能量消耗高、提高血液循环效率及促进血管舒张等优点。②水中运动对糖尿病、高血压、关节炎、肥胖、脑卒中等慢性疾病具有较好的干预效果,是改善患者病情的有效方式。为进一步提高水中运动对慢性病的干预治疗作用,建议后续:①围绕疾病的种类、病情的程度等因素,制定评价水中运动疗法干预效果的特异性和针对性评价指标体系。②围绕患者实际需求设计更加多样的水中运动方式,完善水中疗法的运动环境,深入探究水中运动对慢性疾病干预效果的“运动剂量-效应”关系,为水中运动处方的制定提供精准参考。③围绕不同水温探讨水中疗法对慢性病患者的干预治疗效果,从而制定出更加科学有效的水中运动疗法。

关键词：常见慢性疾病水中运动运动干预干预效果

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Social Engineering Attack-Defense Strategies Based on Reinforcement Learning

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Computer Systems Science & Engineering 2023年第11期47卷 2153-2170页

作者： Rundong Yang kangfeng Zheng Xiujuan Wang Bin Wu Chunhua Wu School of Cyberspace Security Beijing University of Posts and TelecommunicationsBeijing100876China School of Computer Science Beijing University of TechnologyBeijing100124China

Social engineering attacks are considered one of the most hazardous cyberattacks in cybersecurity,as human vulnerabilities are often the weakest link in the entire network.Such vulnerabilities are becoming increasingly susceptible to network security risks.Addressing the social engineering attack defense problem has been the focus of many studies.However,two main challenges hinder its successful resolution.Firstly,the vulnerabilities in social engineering attacks are unique due to multistage attacks,leading to incorrect social engineering defense strategies.Secondly,social engineering attacks are real-time,and the defense strategy algorithms based on gaming or reinforcement learning are too complex to make rapid decisions.This paper proposes a multiattribute quantitative incentive method based on human vulnerability and an improved Q-learning(IQL)reinforcement learning method on human vulnerability attributes.The proposed algorithm aims to address the two main challenges in social engineering attack defense by using a multiattribute incentive method based on human vulnerability to determine the optimal defense strategy.Furthermore,the IQL reinforcement learning method facilitates rapid decision-making during real-time attacks.The experimental results demonstrate that the proposed algorithm outperforms the traditional Qlearning(QL)and deep Q-network(DQN)approaches in terms of time efficiency,taking 9.1%and 19.4%less time,respectively.Moreover,the proposed algorithm effectively addresses the non-uniformity of vulnerabilities in social engineering attacks and provides a reliable defense strategy based on human vulnerability attributes.This study contributes to advancing social engineering attack defense by introducing an effective and efficient method for addressing the vulnerabilities of human factors in the cybersecurity domain.

关键词： Social engineering game theory reinforcement learning Q-learning

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Biosynthesis and Immunological Evaluation of a Dual-Antigen Nanoconjugate Vaccine Against Brucella melitensis

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Engineering 2023年第10期29卷 95-109页

作者： Jing Huang Yufei Wang kangfeng Wang Shulei Li Peng Sun Yan Guo Jiankai Liu Ruifu Yang Ming Zeng Chao Pan Hengliang Wang Li Zhu State Key Laboratory of Pathogen and Biosecurity Beijing Institute of BiotechnologyBeijing 100071China Beijing Minhai Biotechnology Co. Ltd.Beijing 102600China State Key Laboratory of Pathogen and Biosecurity Beijing Institute of Microbiology and EpidemiologyBeijing 100071China The Third Medical Center PLA General HospitalBeijing 100039China College of Life Science Hebei UniversityBaoding 071002China

Brucellosis,caused by Brucella,is one of the most common zoonosis.However,there is still no vaccine for human use.Although some live attenuated vaccines have been approved for animals,the protection effect is not ideal.In this study,we developed a dual-antigen nanoconjugate vaccine containing both polysaccharide and protein antigens against Brucella.First,the antigenic polysaccharide was covalently coupled to the outer membrane protein Omp19 using protein glycan coupling technology,and then it was successfully loaded on a nano-carrier through the SpyTag/SpyCatcher system.After confirming the efficient immune activation and safety performance of the dual-antigen nanoconjugate vaccine,the potent serum antibody response against the two antigens and remarkable protective effect in non-lethal and lethal Brucella infection models were further demonstrated through different routes of administration.These results indicated that the dual-antigen nanoconjugate vaccine enhanced both T helper 1 cell(Th1)and Th2 immune responses and protected mice from Brucella infection.Furthermore,we found that this protective effect was maintained for at least 18 weeks.To our knowledge,this is the first Brucella vaccine bearing diverse antigens,including a protein and polysaccharide,on a single nanoparticle.Thus,we also present an attractive technology for co-delivery of different types of antigens using a strategy applicable to other vaccines against infectious diseases.

关键词： Protein glycan coupling technology(PGCT) Dual-antigen Nanoconjugate vaccine Brucella melitensis

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