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Electronic structure regulation and built-in electric field synergistically strengthen photocatalytic nitrogen fixation performance on Ti-BiOBr/TiO_(2)heterostructure

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Rare Metals 2024年第3期43卷 1125-1138页

作者： Ru-Qi Li Yu-Jie Bian Chun-Ming Yang Li Guo tao-Xia ma Chuan-tao Wang Feng Fu Dan-Jun Wang College of Chemistry and Chemical Engineering Yan’an UniversityYan’an Key Laboratory of Green Catalysis and Quality Improvement and Utilization of Low Rank CoalYan’an716000China

At present,industrial synthetic ammonia was still obtained through the Hubble-Bosch process,with large energy *** is a research hotspot to realize green synthetic ammonia by using solar *** difficulty of photocatalytic ammonia synthesis was that the photo-excited electrons have not enough energy to active N≡*** this study,Ti was doped into BiOBr by one-step hydrothermal method,which was oxidized into TiO_(2)when the doping amount reaches the maximum,in situ forming Ti_(0.31)B_(0.69)OB/TiO_(2)*** from the synergistic effect of Ti doping and S-scheme heterojunction,the synthetic ammonia efficiency of Ti_(0.31)B_(0.69)OB/TiO_(2)-11.96 reached 1.643 mmol·g_(cat)^(-1)at mild conditions and without hole scavenger for up to 7 h,the efficiency of synthetic ammonia is 115 times,10.5 times and 3.3 times of that of BiOBr,Ti_(0.31)B_(0.69)OB and TiO_(2),***,DFT calculation confirms that Ti doping accurately refine the electronic structure of BiOBr,facilitate nitrogen adsorption activation and reduce hydrogenation reaction energy barrier,thus accelerating the reaction kinetics of photocatalytic nitrogen reduction(NRR),Meanwhile,constructing S-scheme heterojunction boosts the separation and transfer of photogenerated electron-hole pairs,improving the reduction ability of electrons in the conduction band of TiO_(2)and the oxidation ability of holes in the valence band of Ti_(0.31)B_(0.69)OB.

关键词： S-scheme heterostructure Electronic structure regulation Built-in electric field Synergistical stren4gthening Photocatalytic nitrogen fixation

A layered multifunctional framework based on polyacrylonitrile and MOF derivatives for stable lithium metal anode

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Journal of Energy Chemistry 2024年第6期93卷 282-288,I0007页

作者： Fanfan Liu Peng Zuo Jing Li Pengcheng Shi Yu Shao Linwei Chen Yihong Tan tao ma Engineering Research Center of High-frequency Soft magnetic materials and Ceramic Powder materials of Anhui Province School of Chemistry and Material EngineeringChaohu UniversityHefei 238024AnhuiChina Frontiers Science Center for Transformative Molecules School of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai 200240China School of Pharmacy Anhui University of Chinese MedicineHefei 230012AnhuiChina School of materials and Energy Guangdong University of TechnologyGuangzhou 510006GuangdongChina Jiujiang DeFu Technology Co. Ltd.Jiujiang 332000JiangxiChina

Composite Li metal anodes based on three-dimensional(3D) porous frameworks have been considered as an effective material for achieving stable Li metal batteries with high energy ***,uneven Li deposition behavior still occurs at the top of 3D frameworks owing to the local accumulation of Li *** promote uniform Li deposition without top dendrite growth,herein,a layered multifunctional framework based on oxidation-treated polyacrylonitrile(OPAN) and metal-organic framework(MOF) derivatives was proposed for rationally regulating the distribution of Li ions flux,nucleation sites,and electrical *** from these merits,the OPAN/carbon nano fiber-MOF(CMOF) composite framework demonstrated a reversible Li plating/stripping behavior for 500 cycles with a stable Coulombic efficiency of around 99.0% at the current density of 2 ma/cm~***,such a Li composite anode exhibited a superior cycle lifespan of over 1300 h under a low polarized voltage of 18 mV in symmetrical *** the Li composite anode was paired with LiFePO_(4)(LFP) cathode,the obtained full cell exhibited a stable cycling over 500 ***,the COMSOL Multiphysics simulation was conducted to reveal the effects on homogeneous Li ions distribution derived from the above-mentioned OPAN/CMOF framework and electrical insulation/conduction *** electrochemical and simulated results shed light on the difficulties of designing stable and safe Li metal anode via optimizing the 3D frameworks.

关键词： Lithium metal anode Layered multifunctional framework Ions flux redistribution Electrical insulation/conduction structure Uniform Li deposition

Regularized automatic frequency response function acquisition of a milling robot operating in a high-dimensional workspace

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Science China(Technological Sciences) 2024年第6期67卷 1783-1797页

作者： LUO WenLong TANG XiaoWei ma tao GUO QiuShuang XU YanYan YUAN Xing ZHANG Lei maO XinYong School of Mechanical Science and Engineering Huazhong University of Science and TechnologyWuhan430074China State Key Laboratory of Smart manufacturing for Special Vehicles and Transmission System Baotou014030China Wuhan Heavy Duty machine Tool Group Corporation Wuhan430205China

Because robotic milling has become an important means for machining significant large parts,obtaining the structural frequency response function(FRF)of a milling robot is an important basis for machining process ***,because of its articulated serial structure,a milling robot has an enormous number of operating postures,and its dynamics are affected by the motion *** accurately obtain the FRF in the operating state of a milling robot,this paper proposes a method based on the structural modification *** the traditional excitation method,the proposed method uses robot joint motion excitation instead of hammering excitation to realize *** address the problem of the lack of information brought by motion excitation,which leads to inaccurate FRF amplitudes,this paper derives the milling robot regularization theory based on the sensitivity of structural modification,establishes the modal regularization factor,and calibrates the FRF *** to the commonly used manual hammering experiments,the proposed method has high accuracy and reliability when the milling robot is in different *** the measurement can be performed directly and automatically in the operation state,and the problem of inaccurate amplitudes is solved,the proposed method provides a basis for optimizing the machining posture of a milling robot and improving machining efficiency.

关键词： milling robot structural dynamics frequency response function automatic identification modal regularization factor high-dimensional workspace

IL13RA2 promotes progression of infantile haemangioma by activating glycolysis and the Wnt/β-catenin signaling pathway

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Oncology Research 2024年第9期32卷 1453-1465页

作者： ZIYONG LIU tao ma JINFANG LI WEI REN ZHIXIN ZHANG Department of Cardiothoracic Surgery 970th Hospital of the People’s Liberation ArmyWeihai264209China Department of Cardiac Ultrasound Weihai Municipal HospitalWeihai264200China

Background:Interleukin 13 receptor subunit alpha 2(IL13RA2)plays an essential role in the progression of many ***,the role of IL13RA2 in infantile haemangioma(IH)is still *** and Methods:IL13RA2 expression in IH tissues was analyzed using western blot,qRT-PCR,and *** role of IL13RA2 in haemangioma-derived endothelial cells(HemECs)was determined following knockdown or overexpression of IL13RA2 using CCK-8,colony formation,apoptosis,wound healing,tubule formation,Transwell,and western ***:IL13RA2 expression was upregulated in IH ***13RA2 overexpression promoted proliferation,migration,and invasion of HemECs and induced glycolysis,which was confirmed with a glycolysis ***,IL13RA2 interacted withβ-catenin and activated the Wnt/β-catenin pathway in HemECs,which were involved in the above-mentioned effects of ***:These findings revealed that targeting IL13RA2 is a potential therapeutic approach for IH.

关键词： Infantile haemangioma IL13RA2 Glycolysis Wnt/β-catenin pathway

Comparison of outcomes with stapler versus hand-sewn closure of the pancreatic stump following minimally invasive distal pancreatectomy: a retrospective cohort study

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胰腺病学杂志(英文) 2024年第2期7卷 106-110页

作者： Qian tao Huang Kaiquan Chen Wen Bai Xueli Gao Shunliang Shen Yan Zhang Min Wu Jian Yu Jun ma tao Liang Tingbo Department of Hepatobiliary and Pancreatic Surgery the First Affiliated Hospital of Zhejiang University School of Medicine Hangzhou China Innovation Center for the Study of Pancreatic Diseases of Zhejiang Province Hangzhou China Zhejiang Clinical Research Center of Hepatobiliary and Pancreatic Diseases Hangzhou China Zhejiang Provincial Key Laboratory of Pancreatic Disease Hangzhou China Cancer Center Zhejiang University Hangzhou China

Background: Pancreatic fistula after distal pancreatectomy is a common and potentially lethal complication. The optimal closure method for the pancreatic remnant during minimally invasive distal pancreatectomy (MDP) remains ***: Data of consecutive patients who underwent MDP in our institution between July 2018 and June 2021 were collected. The outcomes of MDP with stapler and hand-sewn closure were compared. The primary outcome was clinically relevant postoperative pancreatic fistula (CR-POPF) per the International Study Group of Pancreatic Surgery ***: Of the 384 patients (stapler closure, 339; hand-sewn closure, 45) enrolled, 249 developed CR-POPF (grades B and C: 242 and 7 patients, respectively). The rates of grade B and grade C POPF in the stapler group were similar to the corresponding rates in the hand-sewn group (64.6% and 1.5% vs 51.1% and 4.4%,P = .078 andP = .223, respectively). No differences between the stapler and hand-sewn groups were observed regarding the median operation time (207 vs 222 minutes,P = .139), incidence of major complications (16.5% vs 20.0%,P = .559), and mortality (0.2% vs 0%,P = 1.000). The independent risk factors of CR-POPF were abdominal abscess, prolonged operation time, and transection site (P = .004, .006, and .001, respectively).Conclusion: The incidence and severity of CR-POPF by stapler closure of the pancreatic stump were comparable to those associated with hand-sewn closure in MDP in this retrospective cohort. Randomized controlled trials are needed to verify this finding.

关键词： Distal pancreatectomy Minimally invasive surgery Outcome Postoperative pancreatic fistula Stapler closure

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论和瑛的咏藏诗歌创作及其文化价值

民族文学研究 2024年第3期42卷 139-153页

作者：马涛安徽师范大学中国诗学研究中心

和瑛将舆地学思想投映于其诗文辞赋创作中,显现出纸上考据与现场考察紧密结合的纪实性特征,以及补于时事的经世色彩。其边疆纪行诗继承了杜甫秦州时期作品的意格笔法,注重发挥诗歌的“图经”价值。和瑛在大一统时代背景及雄健精神的感召... 详细信息

和瑛将舆地学思想投映于其诗文辞赋创作中,显现出纸上考据与现场考察紧密结合的纪实性特征,以及补于时事的经世色彩。其边疆纪行诗继承了杜甫秦州时期作品的意格笔法,注重发挥诗歌的“图经”价值。和瑛在大一统时代背景及雄健精神的感召下,成为较早的对藏族地区山水之美的发现者与歌咏者,相关作品具有鲜明的美学特质与文化价值。在儒禅交融的文化视野下,和瑛以诗歌真切呈现了特定历史背景下的世风民俗以及自我精神的脉动与治理思想的生成轨迹。

关键词：和瑛易简斋诗钞艺术风貌思想意蕴

在历史与现实的交汇处进行理论创新——2023年文艺学动态

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中国文学批评 2024年第1期 170-175页

作者：马涛中国社会科学杂志社北京100026

中国是诗的国度,文学在中华五千年的民族精神传承中发挥了至关重要的作用,从“诗言志”到“诗缘情”,文学在人们外在的社会生活和内在的精神追求中始终在场,形成了我们民族的文化底色。文学之所以在我们的文化中扮演着如此重要的角色,... 详细信息

中国是诗的国度,文学在中华五千年的民族精神传承中发挥了至关重要的作用,从“诗言志”到“诗缘情”,文学在人们外在的社会生活和内在的精神追求中始终在场,形成了我们民族的文化底色。文学之所以在我们的文化中扮演着如此重要的角色,与汉字作为表意文字的象征意味密不可分,汉字所建构的文学世界是我们精神的自然外化和延伸。当代文学和文艺理论成长于日新月异的现代生活,但其特色仍然源于我们的文学传统。习近平总书记在文化传承发展座谈会上指出:“在五千多年中华文明深厚基础上开辟和发展中国特色社会主义,把马克思主义基本原理同中国具体实际、同中华优秀传统文化相结合是必由之路。”①“两个结合”深刻阐明了文艺理论生发的现实语境与历史源头,当代文艺理论的建构与发展,应当以“两个结合”为指引,在历史与现实的交汇处进行理论创新。

关键词：当代文艺理论精神传承象征意味诗缘情诗言志当代文学历史源头中华优秀传统文化

18-19世纪前期英国煤价生成机制及其影响

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世界历史 2024年第3期 112-132,166,167页

作者：马涛杭州电子科技大学马克思主义学院

18-19世纪前期是英国工业化的重要时期,与工业化相伴的是煤炭产业的大发展,并在此基础上形成了伦敦煤炭市场和内地煤炭市场。受交通、垄断组织等因素影响,伦敦煤市和内地煤市各有其独立的煤价生成机制。在伦敦煤市,煤价主要受到垄断组... 详细信息

18-19世纪前期是英国工业化的重要时期,与工业化相伴的是煤炭产业的大发展,并在此基础上形成了伦敦煤炭市场和内地煤炭市场。受交通、垄断组织等因素影响,伦敦煤市和内地煤市各有其独立的煤价生成机制。在伦敦煤市,煤价主要受到垄断组织的操控;在内地煤市,煤价则更多受交通因素的影响。当时英国的煤价体系实际上是伦敦煤价与内地煤价并存的煤价体系。伦敦煤价生成机制在保障伦敦能源供给的同时加剧了伦敦煤市的封闭性,导致内地煤难以进入伦敦煤市,只能寻求就地消化,也让长期享受高煤价红利的东北部忽视本地工业建设,因而经济逐渐衰落;内地煤价生成机制却触发了英国内陆交通大变革,引发煤炭产业地理格局的重构,在低煤价区孕育出以运河为依托的发达工业区。英国工业地理格局由此发生变化,地处煤价洼地的英格兰西北部开始崛起,成为英国工业化最快的地区,并对英国工业经济的崛起产生影响。

关键词：英国工业化煤价生成机制煤炭产业煤炭市场工业地理格局

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基于相对零主观算法的机场智慧化程度评价

交通运输工程学报 2024年第2期24卷 232-242页

作者：张锐黄卫马涛东南大学智能运输系统(ITS)研究中心江苏南京211189 综合交通运输理论交通运输行业重点实验室(南京现代综合交通实验室) 江苏南京211100 东南大学交通学院江苏南京211189

为了解决机场智慧化程度评价过程中遇到的指标类型繁多、覆盖范围广泛,且指标间关系错综复杂、量纲不统一、难以进行定量分析的难题,优选了传统的评价方法,并将改进后的优劣解距离(TOPSIS)法和层次分析法(AHP)进行融合,提出了专门针对... 详细信息

为了解决机场智慧化程度评价过程中遇到的指标类型繁多、覆盖范围广泛,且指标间关系错综复杂、量纲不统一、难以进行定量分析的难题,优选了传统的评价方法,并将改进后的优劣解距离(TOPSIS)法和层次分析法(AHP)进行融合,提出了专门针对机场智慧化程度评价的相对零主观(ZR)算法;为确保评价结果的准确,利用专家意见与客观判断结果对机场智慧化程度评价体系中的功能指标权重进行了计算,基于江苏省某机场通过ZR算法进行了机场智慧化程度评价。研究结果表明:2018年某机场智慧化程度评分为65.64,2022年某机场智慧化程度评分为77.08,说明机场内各项智慧智能设备在不断更新迭代,机场智慧化程度也在不断提高;2022年,机场应急保障下的二级安全运行监测指标较2018年提高了65.7%,人身安全检查指标提高了17.1%,应急与安全指标提高了16.2%,主要原因在于某机场近年来大力发展人工智能分析系统,引进了航站楼出入口人脸识别系统,完善了站坪作业安全监控平台,在一定程度上提高了机场安全的智慧化程度;陆侧交通指标2018年评分为2.34,2022年为2.54,评分变化较小,因此,智慧化程度发展迟缓,在未来的建设中需进一步加强资源投入。

关键词：民用机场智慧化程度评价相对零主观算法改进TOPSIS法权重计算