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Intramolecular Hydrogen Bond Improved Durability and Kinetics for Zinc‑Organic Batteries

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Nano-Micro Letters 2024年第3期16卷 138-148页

作者： Tianjiang Sun Jun Pan Weijia Zhang Xiaodi Jiang Min Cheng Zhengtai Zha Hong jin fan Zhanliang Tao Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Renewable Energy Conversion and Storage CenterCollege of ChemistryNankai UniversityHaihe Laboratory of Sustainable Chemical TransformationsTianjin 300071People’s Republic of China School of Physical and Mathematical Sciences Nanyang Technological UniversitySingapore 637371Singapore Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology School of Physics Science and EngineeringTongji UniversityShanghai 200092People’s Republic of China

Organic compounds have the advantages of green sustainability and high designability,but their high solubility leads to poor durability of zinc-organic ***,a high-performance quinone-based polymer(H-PNADBQ)material is designed by introducing an intramolecular hydrogen bonding(HB)*** intramolecular HB(C=O⋯N-H)is formed in the reaction of 1,4-benzoquinone and 1,5-naphthalene diamine,which efficiently reduces the H-PNADBQ solubility and enhances its charge transfer in *** situ ultraviolet-visible analysis further reveals the insolubility of H-PNADBQ during the electrochemical cycles,enabling high durability at different current ***,the H-PNADBQ electrode with high loading(10 mg cm^(-2))performs a long cycling life at 125 mA g^(-1)(>290 cycles).The H-PNADBQ also shows high rate capability(137.1 mAh g^(−1)at 25 A g^(−1))due to significantly improved kinetics inducted by intramolecular *** work provides an efficient approach toward insoluble organic electrode materials.

关键词： Zn-organic batteries H-PNADBQ polymer Intramolecular hydrogen bond Reduced solubility Improvedπ-conjugated level

Asymptomatic low-grade appendiceal mucinous neoplasm:A case report

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World Journal of Clinical Cases 2024年第2期12卷 361-366页

作者： Min-Quan Yao Yu-Peng Jiang Yuan-Yu Wang Yi-Ping Mou jin-Xing fan Department of Gastrointestinal Surgery Tongxiang First People’s HospitalJiaxing 314500Zhejiang ProvinceChina Department of General Surgery Zhejiang Provincial People’s HospitalHangzhou 310014Zhejiang ProvinceChina Endoscopy Center Tongxiang First People’s HospitalJiaxing 314500Zhejiang ProvinceChina

BACKGROUND Low-grade appendiceal neoplasms(LAMN)are characterized by low incidence and atypical clinical presentations,often leading to misdiagnosis as acute or chronic appendicitis before *** primary diagnostic tool for LAMN is abdominal computed tomography(CT)*** resection remains the cornerstone of LAMN management,necessitating en bloc tumor excision to minimize the risk of iatrogenic ***,known for its minimal invasiveness,reduced postoperative discomfort,and expedited recovery,is a safe and reliable approach for LAMN *** the possibility of pseudomyxoma peritonei development,appendectomy and partial appendectomy generally result in negative tumor margins and favorable outcomes,which can be attributed to the disease’s slow growth and lower *** SUMMARY A 71-year-old male patient was admitted to our hospital with a pelvic spaceoccupying lesion detected 1 mo *** examination showed a soft abdomen without tenderness or rebound and no palpable *** shifting dullness was noted,and digital rectal examination revealed no palpable *** revealed a raised,smooth-surfaced mass measuring 3.0 cm in the *** contrast-enhanced CT showed a markedly thickened and dilated appendix with visible cystic *** surgery was performed and revealed a significantly dilated appendix,leading to laparoscopic resection of the appendix and part of the ***-surgical pathologic analysis confirmed *** patient received symptomatic and supportive post-operative care and was discharged on postoperative day 4 without complications such as abdominal bleeding,intestinal obstruction,or incision *** tumor recurrence was observed during a 7-mo follow-up *** LAMN is a rare disease that lacks specific clinical *** CT plays a crucial role in diagnosing LAMN,and laparoscopic surgery is a safe and effective diagnostic and therapeutic approach.

关键词： Low-grade appendiceal mucinous neoplasm Pseudomyxoma peritonei Computed tomography Laparoscopy appendectomy Case report

Highly efficient and stable electrocatalyst for hydrogen evolution by molybdenum doped Ni-Co phosphide nanoneedles at high current density

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Nano Research 2024年第3期17卷 1066-1074页

作者： Chengyu Huang Zhonghong Xia jing Wang jing Zhang Chenfei Zhao Xingli Zou Shichun Mu Jiujun Zhang Xionggang Lu Hong jin fan Shengjuan Huo Yufeng Zhao College of Sciences&Institute for Sustainable Energy Shanghai UniversityShanghai 200444China State Key Laboratory of Metastable Materials Science and Technology Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource ReuseYanshan UniversityQinhuangdao 066004China State Key Laboratory of Advanced Special Steel and Shanghai Key Laboratory of Advanced Ferrometallurgy School of Materials Science and EngineeringShanghai UniversityShanghai 200444China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China School of Physical and Mathematical Sciences Nanyang Technological UniversitySingapore639798

There is an increasingly urgent need to develop cost-effective electrocatalysts with high catalytic activity and stability as alternatives to the traditional Pt/C in catalysts in water *** this study,microspheres composed of Mo-doped NiCoP nanoneedles supported on nickel foam were prepared to address this *** results show that the nanoneedles provide sufficient active sites for efficient electron transfer;the small-sized effect and the micro-scale roughness enhance the entry of reactants and the release of hydrogen bubbles;the Mo doping effectively improves the electrocatalytic performance of NiCoP in alkaline *** catalyst exhibits low hydrogen evolution overpotentials of 38.5 and 217.5 mV at a current density of 10 mA·cm^(-2) and high current density of 500 mA·cm^(-2),respectively,and only 1.978 V is required to achieve a current density of 1000 mA·cm^(-2) for overall water *** functional theory(DFT)calculations show that the improved hydrogen evolution performance can be explained as a result of the Mo doping,which serves to reduce the interaction between NiCoP and intermediates,optimize the Gibbs free energy of hydrogen adsorption(△G_(*H)),and accelerate the desorption rate of **** study provides a promising solution to the ongoing challenge of designing efficient electrocatalysts for high-current-density hydrogen production.

关键词： transition metal phosphides Mo-doped NiCoP hydrogen evolution reaction gradient hydrothermal water splitting

世界文学史的治理职能:一个从施勒格尔到奥尔巴赫的德国传统

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文艺研究 2024年第10期 69-83页

作者：范劲中山大学中文系

19世纪德国的世界文学史不仅是知识类型,更是一个治理体系。德国民族国家形成和加入世界秩序的宏观历史过程,引导着史家的世界想象;史家以不同的世界文学史写作方式,展开普遍性和民族性、神圣秩序和历史主义的悖论关系,并建构世界秩序... 详细信息

19世纪德国的世界文学史不仅是知识类型,更是一个治理体系。德国民族国家形成和加入世界秩序的宏观历史过程,引导着史家的世界想象;史家以不同的世界文学史写作方式,展开普遍性和民族性、神圣秩序和历史主义的悖论关系,并建构世界秩序。弗·施勒格尔以《古今文学史》开世界文学史先河,一方面强调整体理念,另一方面鼓吹德国文学和观念论的优越性,“德国普全性”诉求已然出现。“二战”中诞生的奥尔巴赫《摹仿论》虽抵制浪漫派思想和雅利安语文学,却还是世界文学史传统的产物,以激进方式延续其世界治理功能。两部世界文学史的对峙,不仅呈现了隐蔽的德国学术史脉络,也敦促后来的研究者从更高的立场看待民族性和世界性问题。

关键词：世界文学史文学史写作悖论关系世界秩序整体理念奥尔巴赫民族性和世界性雅利安

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世界文学系统中的世界文学概念

中国比较文学 2024年第3期 73-91页

作者：范劲中山大学中文系

本雅明以20世纪人的眼光,觉察到德国浪漫派的激进性。浪漫派凭借其系统性和反身性方法,不仅在艺术哲学思考上超过了歌德,且在认识论上和当代前沿科学理论相通。在新的认识论视角下,歌德的世界文学概念也会呈现出新样态:不是对文学世界... 详细信息

本雅明以20世纪人的眼光,觉察到德国浪漫派的激进性。浪漫派凭借其系统性和反身性方法,不仅在艺术哲学思考上超过了歌德,且在认识论上和当代前沿科学理论相通。在新的认识论视角下,歌德的世界文学概念也会呈现出新样态:不是对文学世界的客观认知,而是在世界文学系统中建立一个“自己的”系统,而系统之外的世界文学必然成为盲区。同样,施特里希出于民族和解的政治诉求,在20世纪上半叶致力于塑造歌德的“世界文学理念”,等于在系统中又建立了一个新的系统。而历史考察也表明,19世纪德国人一度彷徨在歌德、浪漫派、黑格尔等人之间,不知道该采纳谁的世界文学方案。将世界文学概念重新置回世界文学系统,不但可以消解“统一的”世界文学传统的幻象,也为非西方民族构建自己的世界文学理念提供了理论依据。

关键词：世界文学系统反身性歌德德国浪漫派

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量子自注意力神经网络的时间序列预测

电子科技大学学报 2024年第1期53卷 110-118页

作者：陈欣李闯金凡中金金融认证中心有限公司北京100176

在“量子-经典”混合模式下,设计了多头量子自注意力神经网络预测模型(MQSAPN)用以进行时间序列预测,模型包括多头量子自注意力模块以及变分量子线路预测模块两部分。通过对输入数据按时间步长分别进行量子态编码以及K、Q、V的计算,借... 详细信息

在“量子-经典”混合模式下,设计了多头量子自注意力神经网络预测模型(MQSAPN)用以进行时间序列预测,模型包括多头量子自注意力模块以及变分量子线路预测模块两部分。通过对输入数据按时间步长分别进行量子态编码以及K、Q、V的计算,借鉴已有研究使用高斯函数进行自注意力系数的估计方式,将量子自注意力特征提取后的数据再次编码到变分预测线路中,经过线路演化及测量,最终获取预测结果。完整流程与模型搭建均采用VQNet框架实现。在天气学变量的时间序列预测任务中,该模型表现出与经典多头自注意力模型预测模型以及长短期记忆单元网络模型相当的预测精度。此外,相对于同样是量子机器学习的data-reuploading变分线路而言,在近乎同等规模线路深度与参数量的前提下,表现出更高的预测精度,这也进一步验证了引入量子自注意力机制的有效性。值得指出的是,作为预测部分的变分线路会随着输入数据量的增多(如时间窗加长、特征变量规模增加等),其参数量与线路深度也会显著增加,尽管多层QSA能够较好地进行特征表达,但依然有可能因遇到“贫瘠高原”困难而成为整个网络的瓶颈。

关键词：量子计算量子机器学习自注意力机制时间序列预测

Enhanced degradation of florfenicol by microscale SiC/Fe:Dechlorination via hydrogenolysis

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Chinese Chemical Letters 2024年第7期35卷 218-221页

作者： Yun-Fei Zhang Chun-Hui Zhang Jian-Hui Xu Lei Li Dan Li jin-Hong fan Jiale Gao Xin Quan Qi Wu Yue Zou Yan-Ling Liu Dongguan University of Technology School of Environment and Civil EngineeringDongguan 523830China State Key Laboratory of Pollution Control and Resource Reuse School of Environmental Science and EngineeringTongji UniversityShanghai 200092China

Herein,the degradation of florfenicol(FLO)over zero-valent iron(ZVI)enhanced by SiC was systematically *** was found that 5 g/L of ZVI/SiC(1:3)at pH 3.0 could completely degrade 20 mg/L of FLO within 1 h,with a Kobsvalue of 0.0873 min^(-1),12.5 times greater than that of pure ZVI(0.0069 min^(-1)).Vibrating sample magnetometer(VSM)characterizations revealed that the use of SiC supporter reduces the magnetic intensity of ZVI,which mitigates iron particle agglomeration,increases Brunauer-Emmett-Teller(BET)surface area,and enhances FLO degradation ***,ZVI/SiC exhibits a much lower hydrogen evolution potential(HEP)and significantly higher corrosion currents compared to pure *** was proposed to undergo degradation via reductive dechlorination,involving a hydrogenolysis mechanism that entails the cleavage of theσ*** study provides new insights into the reduction hydrogenation mechanism of ZVI.

关键词： Zero-valent iron Silicon carbide Reductive dechlorination Hydrogenolysis Florfenicol

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农村居民收入分配政策的模拟研究

系统工程理论与实践 2024年第5期44卷 1437-1449页

作者：范金张晓兰胡超南京林业大学经济管理学院南京210037 国家信息中心经济预测部北京100045

党的二十大报告特别强调将追求全体人民共同富裕融入到现代化建设过程中.本文通过构建中国农村居民消费社会核算矩阵,模拟不同分配政策下社会商品和服务消费以及农村居民消费基尼系数的变化,以探寻完善农村居民共同富裕的分配政策有效路... 详细信息

党的二十大报告特别强调将追求全体人民共同富裕融入到现代化建设过程中.本文通过构建中国农村居民消费社会核算矩阵,模拟不同分配政策下社会商品和服务消费以及农村居民消费基尼系数的变化,以探寻完善农村居民共同富裕的分配政策有效路径.研究发现:扩大中等、扶持弱者分配政策不仅能促进社会商品和服务消费增长,而且能将农村居民消费差距控制在合理范围之内,是相对较优选择,而绝对公平、绝对效率分配政策是相对较次选择;政策模拟显示,教育文化和娱乐和医疗保健消费增长幅度最多,食品烟酒消费反而减少,显示有效的分配政策有助于我国农村居民消费升级转型;初次分配制度是促进农村居民共同富裕的主导机制,再分配制度是促进农村居民共同富裕重要手段,第三次分配制度是有益补充.为此,提出政策建议:完善收入分配制度,推进实现共同富裕;缩小居民收入差距,促进农民富裕富足;完善社会保障制度,不断增进民生福祉.

关键词：农村居民共同富裕分配政策社会核算矩阵

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新型分离式实心板梁桥全过程受力性能分析

华南理工大学学报（自然科学版） 2024年第1期52卷 38-51页

作者：蒋冬启吴浩范进南京理工大学理学院江苏南京210094

为研究新型分离式实心板梁桥的全过程受力性能,以主梁净距、主梁数目和预应力筋配置情况等为关键参数,基于ABAQUS有限元软件平台对该桥梁体系开展非线性数值分析,探究分离式实心板梁桥从施工、运营到加载破坏的损伤演变及失效模式。结... 详细信息

为研究新型分离式实心板梁桥的全过程受力性能,以主梁净距、主梁数目和预应力筋配置情况等为关键参数,基于ABAQUS有限元软件平台对该桥梁体系开展非线性数值分析,探究分离式实心板梁桥从施工、运营到加载破坏的损伤演变及失效模式。结果表明:主梁破坏与主梁-桥面板组合破坏为分离式实心板梁桥结构的两类主要破坏模式。当主梁净距较小时,全桥各梁变形基本一致,承载能力较高,易发生主梁破坏;反之,主梁净距较大时,桥梁横向传力性能较弱,不同主梁之间存在变形滞后现象,易发生主梁-桥面板组合破坏。对于相近桥宽和跨径的分离式实心板梁桥,主梁间距过大不利于横向协同受力,全桥承载能力会降低约40%~50%;主梁数目较少的桥例可通过增加预应力筋配置数量来改善承载性能,单梁承载力提高幅度可达10%~30%,但预制阶段的上拱问题在设计中应予以重视。与一次浇筑整体式梁桥相比,该组合梁桥体系全过程受力分析所得的位移和应力响应历程有所区别,但极限承载能力差异较小。总体而言,新型分离式实心板梁桥具有良好的承载和变形能力,且自重小、建筑高度低、施工便捷,在国内具有良好的应用前景。

关键词：桥梁工程全过程受力性能损伤演变破坏机理承载性能