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Highly selective electrocatalytic Cl− oxidation reaction by oxygen-modified cobalt nanoparticles immobilized carbon nanofibers for coupling with brine water remediation and H2 production

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Nano Research 2021年第5期14卷 1443-1449页

作者： Qizhong Xiong Xian Zhang qipeng Cheng Guoqiang Liu Gang xu Junli Li Xinxin Ye Hongjian Gao Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention School of Resources and EnvironmentAnhui Agricultural UniversityHefei230036China Key Laboratory of Materials Physics Centre for Environmental and Energy NanomaterialsAnhui Key Laboratory of Nanomaterials and NanotechnologyCAS Center for Excellence in NanoscienceInstitute of Solid State PhysicsChinese Academy of SciencesHefei230031China School of Materials Science and Engineering Hefei University of TechnologyHefei230009China

Combining the H2 production with brine remediation is regarded as a sustainable approach to achieving clean H2 energy. However, designing stable Cl− oxidation reaction (COR) electrocatalyst is the key to realize this route. Herein, a type of oxygen-modified Co nanoparticles anchored graphitic carbon nanofibers catalyst (Co/GCFs) was synthesized through a two-step strategy of adsorption and pyrolysis. The Co/GCFs-2.4 exhibits high selectivity and stability for COR at neutral electrolyte. It is worth noting that unlike the water oxidation, the chemical valence of cobalt has not changed during the COR. Further results demonstrated that the oxygen-modified Co nanoparticles provide active sites for selective COR, meanwhile, the graphitic carbon gives rise to strong catalytic stability. Thanks to the superior COR and H2 production activity of Co/GCFs-2.4, a two-electrode brine electrocatalysis system employing Co/GCFs-2.4 as both cathode and anode for H2 production exhibited robust stability, efficient and high Faraday efficiency (98%-100%). We propose that this work provides a novel strategy for designing efficient and stable catalysts with electrocatalytic COR and HER activities at neutral brine water for practically coupling with H2 production by water electrolysis and brine water remediation.

关键词： carbon nanofibers oxygen-modified cobalt nanoparticles brine water Cl−oxidation reaction electrocatalytic H2 production

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女性肺癌病因及发病机制的研究进展

中华胸心血管外科杂志 2024年第1期40卷 57-62页

作者：徐麒鹏唐健滨州医学院烟台附属医院胸外科烟台264199

肺癌是全球最常见的癌症之一。虽然肺癌的发病率与病死率具有性别差异,但对于女性肺癌(LCW)的病因及发病机理的研究尚未清楚。女性比男性更易受到烟草的致癌作用,其中较为明确的潜在机制是雌激素与烟草化合物中的多环芳烃(PAH)之间的协... 详细信息

肺癌是全球最常见的癌症之一。虽然肺癌的发病率与病死率具有性别差异,但对于女性肺癌(LCW)的病因及发病机理的研究尚未清楚。女性比男性更易受到烟草的致癌作用,其中较为明确的潜在机制是雌激素与烟草化合物中的多环芳烃(PAH)之间的协同作用以及癌基因突变,诱导代谢酶的表达,导致活性氧和DNA加合物的形成增强,从而导致肺癌发生增加。而在非吸烟女性肺癌患者中,除去烟草暴露这一因素,雌激素是通过其受体ERα和ERβ发挥增殖能力,其中最主要的是ERβ,通过基因组和非基因组信号传导影响肺癌变。ERβ的不同亚型可以促进细胞凋亡,从而发挥肿瘤抑制因子作用,对于该受体的研究机制尚未完全清楚。在非吸烟的女性肺癌中,信号转导通路的改变、致癌基因的激活与抑癌基因的突变以及食用油烟的过度暴露,都会增加女性肺癌的风险。在本篇综述中,我们介绍了暴露于烟草中的女性肺癌发病率增高的发病机理,以及在非吸烟女性肺癌中发病的可能病因并阐述其发病机制。

关键词：女性肺癌肺癌发病率可能病因致癌基因 DNA加合物致癌作用抑癌基因雌激素

装饰的暗语:济南洪家楼教堂拱顶壁画形式分析初探

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装饰 2022年第7期 84-88页

作者：慕启鹏徐逢夏山东建筑大学建筑城规学院

针对济南洪家楼教堂拱顶壁画独特的形式,在缺少直接文献佐证的条件下,采用实物观察与间接文献比较的研究方法,以图像学为思路,深入分析其象征意涵以及图像、拱顶、教堂空间三者之间的互动关系,辅助于对历史的猜测,从本土化转译的角度来... 详细信息

针对济南洪家楼教堂拱顶壁画独特的形式,在缺少直接文献佐证的条件下,采用实物观察与间接文献比较的研究方法,以图像学为思路,深入分析其象征意涵以及图像、拱顶、教堂空间三者之间的互动关系,辅助于对历史的猜测,从本土化转译的角度来进一步揭示其中所蕴含的装饰规律,意在证明中国民间工艺美术的潜力和活力。

关键词：洪家楼教堂拱顶壁画教堂空间图像学本土化

Novel hierarchical structure of MoS_(2)/TiO_(2)/Ti_(3)C_(2)T_(x) composites for dramatically enhanced electromagnetic absorbing properties

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Journal of Advanced Ceramics 2021年第5期10卷 1042-1051页

作者： Heng DU qipeng ZHANG Biao ZHAO Frank MARKEN Qiancheng GAO Hongxia LU Li GUAN Hailong WANG Gang SHAO Hongliang xu Rui ZHANG Bingbing FAN School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China hKey Laboratory of Functional Molecular Solids Ministry of EducationAnhui Normal UniversityWuhu 241000China Henan Key L abomtory of Aeronautical Materials and Application Technology Zhengzhou University of AeronauticsZhengzhou 450046China Department of Chemistry University of BathClaverton DownBath BA27AYUK School of Materials Science and Engineering L uoyang Institute of Science and TechnologyLuoyang 471023China

In order to prevent the microwave leakage and mutual interference,more and more microwave absorbing devices are added into the design of electronic products to ensure its routine operation.In this work,we have successfully prepared MoS_(2)/TiO_(2)/Ti_(3)C_(2)T_(x) hierarchical composites by one-pot hydrothermal method and focused on the relationship between structures and electromagnetic absorbing properties.Supported by comprehensive characterizations,M0S_(2) nanosheets were proved to be anchored on the surface and interlayer of Ti_(3)C_(2)T_(x) through a hydrothermal process.Additionally,TiO_(2) nanoparticles were obtained in situ.Due to these hierarchical structures,the MoS_(2)/TiO_(2)/Ti_(3)C_(2)T_(x) composites showed greatly enhanced microwave absorbing performance.The MoS_(2)/TiO_(2)/Ti_(3)C_(2)T_(x) composites exhibit a maximum reflection loss value of -33.5 dB at 10.24 GHz and the effective absorption bandwidth covers 3.1GHz(13.9-17 GHz)at the thickness of 1.0 mm,implying the features of wide frequency and light weight.This work in the hierarchical structure of MoS_(2)/TiO_(2)/Ti_(3)C_(2)T_(x) composites opens a promising door to the exploration of constructing extraordinary electromagnetic wave absorbents.

关键词： MoS_(2)/TiO_(2)/Ti_(3)C_(2)T_(x)hierarchical hybrids microwave absorbing properties dielectric loss

面向绿色基础设施体系优化的矿业废弃地再生研究:以大冶为例

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地质科技通报 2021年第4期40卷 214-223页

作者：廖启鹏许红梅刘欣冉中国地质大学(武汉)景观学系武汉430074 巴塞罗那大学西班牙巴塞罗那08028 黄石市工业遗产保护中心湖北黄石435023 武汉大学城市设计学院武汉430072

完善的绿色基础设施体系在重构矿业城市生态系统,提升矿业城市人居环境品质上作用关键。一方面,经过生态修复后的矿业废弃地是矿业城市绿色基础设施的重要增量,另一方面,以绿色基础设施体系优化为导向的治理是破解当前矿业废弃地治理低... 详细信息

完善的绿色基础设施体系在重构矿业城市生态系统,提升矿业城市人居环境品质上作用关键。一方面,经过生态修复后的矿业废弃地是矿业城市绿色基础设施的重要增量,另一方面,以绿色基础设施体系优化为导向的治理是破解当前矿业废弃地治理低效的有效途径。湖北省大冶市是一座典型的资源枯竭型城市,在运用形态学空间格局分析(MSPA)方法评价大冶市绿色基础设施的基础上,结合矿业废弃地空间分布,评价其生态潜力,进而提出生态型、生活型和生产型3种矿业废弃地再生的改造方式。研究结果表明:①大冶市生态基底良好,但是景观破碎化严重,连通性弱;②大部分矿业废弃地生态潜力较高,60%的矿业废弃地可以转化为绿色基础设施;③30%的矿业废弃地适合生态型改造、52%的适合生活型改造、18%的适合生产型改造。

关键词：绿色基础设施矿业废弃地形态学空间格局分析(MSPA) 大冶市

Risk factors of recurrent acute pancreatitis after conservative treatment in pediatric population: a single-center study

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World Journal of Pediatric Surgery 2021年第1期4卷 8-13页

作者： qipeng Zheng xueqiang Yan Liang Ge Shujian Zhang Yan Sun Jinfu Jia Shengqiao Zhao Xiaodan xu Ran Dou Qingyun Gou Jinfeng Zhao Jianghua Zhan Graduate School Tianjin Medical UniversityTianjinChina Department of General Surgery Tianjin Children's HospitalTianjinChina

Background Although complete resolution and recovery occurs in most children with an initial attack of acute pancreatitis(AP),a subset of children may progress to recurrent AP(RAP).RAP has serious effects to the individual and the socioeconomic burden.The aim of this project was to identify the independent risk factors for pediatric RAP so as to provide evidence for its prevention,early diagnosis and treatment.Methods A retrospective cohort study of children discharged from Tianjin Children’s Hospital from June 2017 to January 2020 was performed.Demographic and clinical variables,treatment strategies,clinical course and outcomes were collected.Independent risk factors of RAP were identified using the logistic regression model.Results Of the total 96 enrolled children,30(31.3%)developed RAP during the follow-up period.The majority(27/30,90%)of the children with AP developed RAP within 6 months of their first AP attack.The presence of systemic inflammatory response syndrome(SIRS)[odds ratio(OR)=6.652,95%confidence interval(CI)1.989 to 22.247],fasting time(OR=1.267,95%CI 1.104 to 1.583),whether meet all three AP diagnostic criteria(OR=7.438,95%CI 1.346 to 41.103)and abnormal amylase/lipase value on the seventh day of hospitalization(OR=3.601,95%CI 0.972 to 13.342)were independent risk factors of RAP in children.Conclusions Most children who developed RAP had progressed within 6 months after their first episode of AP.RAP was more common in children who met all three AP diagnostic criteria at initial attack and in children with SIRS,long fasting time and abnormal amylase/lipase value on the seventh day of hospitalization.

关键词： pediatric prevention treatment

Small RNA existed in commercial reverse transcriptase： primary evidence of functional small RNAs

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Protein & Cell 2015年第1期6卷 1-5页

作者： Jie xu Xi Chen Donghai Li Qun Chen Zhen Zhou Dongxia Hou Jin Wang qipeng Zhang Ke Zen Chen-Yu Zhang Jiangsu Engineering Research Center for microRNA Biology and Biotechnology State Key Laboratory of Pharmaceutical Biotechnology School of Life Sciences Nanjing University Nanjing 210093 China

SMALL RNA IN REVERSE TRANSCRIPTASE： TOO SMALL TO BE FOUND Significant background in no-template or no-primer RT-PCR is frequently noted. However, the underlying mechanism is still unclear. In this issue, Jie xu and colleagues reveal that the com- mercial reverse transcriptases contain small RNAs. In AMV reverse transcriptase, they detected microRNAs derived from the virus host chick or other birds. This surprising finding at least partially explains the high background in some AMV reverse transcriptases based RT-PCR.

关键词： Avian Myeloblastosis Virus/enzymology Escherichia coli/genetics Escherichia coli/metabolism Genome, Bacterial Genome, Bacterial MicroRNAs/metabolism* MicroRNAs/metabolism* Real-Time Polymerase Chain Reaction RNA-Directed DNA Polymerase/genetics RNA-Directed DNA Polymerase/metabolism* Sequence Analysis, RNA

郑州地铁粉细砂地层区间隧道扩挖注浆方案优化研究与实践

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隧道建设（中英文） 2021年第12期41卷 2140-2149页

作者：王玥徐启鹏马召林中铁隧道勘察设计研究院有限公司广东广州511466

为解决粉细砂地层注浆施工过程中浆液难以扩散的问题,依托郑州地铁2号线紫荆山站—东大街站区间联络线暗挖段注浆工程,试验应用偏铝酸钠改性水玻璃浆液与超细水泥单液浆的复合注浆方案。实践表明:1)偏铝酸钠改性水玻璃浆液扩散半径超过1... 详细信息

为解决粉细砂地层注浆施工过程中浆液难以扩散的问题,依托郑州地铁2号线紫荆山站—东大街站区间联络线暗挖段注浆工程,试验应用偏铝酸钠改性水玻璃浆液与超细水泥单液浆的复合注浆方案。实践表明:1)偏铝酸钠改性水玻璃浆液扩散半径超过1 m,可注性好,使注浆总量达到了设计的92%;2)先行注入偏铝酸钠改性水玻璃浆液,待其凝固并形成化学浆脉后,在相邻孔注入超细水泥浆液,使其沿化学浆脉劈裂扩散,形成复合浆脉,充分提升加固区域的围岩强度,在注浆及开挖全过程中,周边建(构)筑物和地层累计变形小于4 mm。此外,汇总分析了近年来多个粉细砂地层注浆施工案例,在与磷酸和硫酸改性水玻璃浆液对比后指出,偏铝酸钠改性水玻璃浆液具有安全性好、凝结时间短、扩散半径大的优势,且来源日趋广泛,能大幅度降低成本,具有良好的经济性和推广应用前景。

关键词：地铁隧道粉细砂地层注浆加固方案优化改性水玻璃偏铝酸钠

基于POI数据的城市文化创意产业园发展特征研究——以武汉市为例

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中国名城 2020年第11期34卷 26-33页

作者：张旭余启鹏武汉理工大学资源与环境工程学院

以武汉市为案例,综合采用POI数据爬取、GIS空间制图分析和实地调查研究的方法,对城市文化创意产业园发展现状进行分类评价,探讨影响文化创意产业园发展效果的因素。结果表明:武汉市文化创意产业园空间分布与城市历史文化街区、旧工业基... 详细信息

以武汉市为案例,综合采用POI数据爬取、GIS空间制图分析和实地调查研究的方法,对城市文化创意产业园发展现状进行分类评价,探讨影响文化创意产业园发展效果的因素。结果表明:武汉市文化创意产业园空间分布与城市历史文化街区、旧工业基地以及高等院校等文化智力资源存在较高的耦合性;创作设计和传播推广类活动构成了文化创意产业园的核心部门,但也有部分园区演变成了以传统消费服务或科技服务为主导;集聚规模和专业化水平均较高的产业园占比相对较低,大量园区或者偏离了文化创意产业园的发展定位,或者无法形成较为明显的集聚效应;园区内部文化创意活动构成、发展路径和投资主体是影响武汉市文化创意产业园发展特征和效果的主要因素。

关键词：文化创意产业园 POI 发展特征武汉影响因素