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In situ Raman,FTIR,and XRD spectroscopic studies in fuel cells and rechargeable batteries

Nano Research 2023年第4期16卷 4855-4866页

作者： Fan Gao xiang-dong tian Jia-Sheng Lin Jin-Chao dong Xiu-Mei Lin Jian-Feng Li Xiamen Cardiovascular Hospital State Key Laboratory of Physical Chemistry of Solid SurfacesCollege of Chemistry and Chemical EngineeringCollege of EnergyXiamen UniversityXiamen 361005China Department of Chemistry and Environment Science Fujian Province University Key Laboratory of Analytical ScienceMinnan Normal UniversityZhangzhou 363000China

As state-of-the-art electrochemical energy conversion and storage(EECS)techniques,fuel cells and rechargeable batteries have achieved great success in the past ***,modern societies’ever-growing demand in energy calls for EECS devices with high efficiency and enhanced performance,which mainly rely on the rational design of catalysts,electrode materials,and electrode/electrolyte interfaces in EESC,based on in-deep and comprehensive mechanistic understanding of the relevant electrochemical redox *** an understanding can be realized by monitoring the dynamic redox reaction processes under realistic operation conditions using in situ techniques,such as in situ Raman,Fourier transform infrared(FTIR),and X-ray diffraction(XRD)*** techniques can provide characteristic spectroscopic information of molecules and/or crystals,which are sensitive to structure/phase changes resulted from different electrochemical working conditions,hence allowing for intermediates identification and mechanisms *** review described and summarized recent progress in the in situ studies of fuel cells and rechargeable batteries via Raman,FTIR,and XRD *** applications of these in situ techniques on typical electrocatalytic electrooxidation reaction and oxygen reduction reaction(ORR)in fuel cells,on representative high capacity and/or resource abundance cathodes and anodes,and on the solid electrolyte interface(SEI)in rechargeable batteries are *** discuss how these techniques promote the development of novel EECS systems and highlight their critical importance in future EECS research.

关键词： in situ spectroscopy Raman Fourier transform infrared spectroscopy(FTIR) X-ray diffraction(XRD) fuel cells rechargeable batteries

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Treatment of primary tracheal schwannoma with endoscopic resection:A case report

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World Journal of Clinical Cases 2022年第28期10卷 10279-10285页

作者： Yong-Shuai Shen xiang-dong tian Yi Pan Hua Li Department of Endoscopy Tianjin Cancer Hospital Airport HospitalTianjin 300000China Department of Endoscopy Tianjin Medical University Cancer Institute and HospitalTianjin 300060China Department of Pathology Tianjin Medical University Cancer Institute and HospitalNational Clinical Research Center for CancerKey Laboratory of Cancer Prevention and TherapyTianjin’s Clinical Research Center for CancerTianjin 300060China Department of Endoscopy Tianjin Medical University Cancer Institute and HospitalNational Clinical Research Center for CancerKey Laboratory of Cancer Prevention and TherapyTianjin’s Clinical Research Center for CancerTianjin 300060China

BACKGROUND Schwannoma is a benign tumor originating from the peripheral nerve *** clinical symptoms of tracheal schwannoma depend on the location of the tumor,and the most common clinical symptoms are cough and *** most effective treatment for benign tumors is complete resection of the primary lesion at an early *** experience has demonstrated that primary tracheal schwannoma can be safely excised with a high-frequency electric knife in a minimally invasive *** SUMMARY We report a 61-year-old asymptomatic woman who underwent chest computed tomography(CT),which accidentally found an intraluminal tracheal mass without enlarged lymph ***,the patient underwent bronchoscopy,which found that the tracheal mass originated from the left wall of the upper trachea,was less than 1.5 cm in size,immovable,smooth and 4 cm away from the vocal cord,resulting in partial upper respiratory tract *** was performed using an endoscopic resection for en bloc removal of the tracheal *** diagnosis was primary tracheal schwannoma.A follow-up was performed after endoscopic surgery,and bronchoscopy and thoracic CT were used to monitor whether there was a *** present,there is no evidence of recurrence,and the patient had a good quality of *** resection may be effective and safe in the treatment of primary tracheal *** Primary tracheal schwannoma is a very rare benign *** this case,we cured it by complete endoscopic resection.

关键词： Schwannoma Tracheal tumor Endoscopic therapy High-frequency electric knife En bloc Case report

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Accuracy of endoscopic ultrasound-guided needle aspiration specimens for molecular diagnosis of non-small-cell lung carcinoma

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World Journal of Clinical Cases 2020年第21期8卷 5139-5148页

作者： Wei Su xiang-dong tian Peng Liu De-Jun Zhou Fu-Liang Cao Department of Endoscopy Tianjin Medical University Cancer Institute and HospitalNational Clinical Research Center for CancerKey Laboratory of Cancer Prevention and TherapyTianjin’s Clinical Research Center for CancerTianjin 300060China

BACKGROUND Endoscopic ultrasonography-guided fine-needle aspiration(EUS-FNA)and endobronchial ultrasound-guided transbronchial needle aspiration(EBUS-TBNA)are highly sensitive for diagnosing and staging lung *** recent years,targeted therapy has shown great significance in the treatment of non-small cell lung carcinoma(NSCLC).Using these minimally invasive techniques to obtain specimens for molecular testing will provide patients with a more convenient diagnostic *** To evaluate the feasibility and accuracy of tissue samples obtained using EUSFNA and EBUS-TBNA for molecular diagnosis of *** A total of 83 patients with NSCLC underwent molecular testing using tissues obtained from EUS-FNA or EBUS-TBNA at the tianjin Medical University Cancer Hospital from January 2017 to June *** enrolled patients underwent chest computed tomography or positron emission tomography/computed tomography prior to *** detected abnormal expression of EGFR,KRAS,MET,HER2,ROS1 and anaplastic lymphoma kinase *** patients failed to complete molecular testing due to insufficient tumor *** clinical features,puncture records,molecular testing results and targeted treatment in the remaining 81 patients were *** In a total of 99 tissue samples obtained from 83 patients,molecular testing was successfully completed in 93 samples with a sample adequacy ratio of 93.9%(93/99).Biopsy samples from two patients failed to provide test results due to insufficient tumor *** the remaining 81 patients,62 cases(76.5%)were found to have adenocarcinoma,11 cases(13.6%)had squamous cell carcinoma,3 cases(3.7%)had adenosquamous carcinoma and 5 cases(6.2%)had NSCLC-not otherwise *** results of molecular testing showed EGFR mutations in 21 cases(25.9%),KRAS mutations in 9 cases(11.1%),ROS-1 rearrangement in 1 case(1.2%)and anaplastic lymphoma kinase-positive in 5 cases(6.2%).Twentyfour patients with positive results received targeted ther

关键词： Endobronchial ultrasound-guided transbronchial needle aspiration Endoscopic ultrasonography-guided fine-needle aspiration Non-small cell lung carcinoma Molecular diagnosis Targeted therapy

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Direct electrochemistry and electrocatalysis of myoglobin in dodecyltrimethylammonium bromide film modified carbon ceramic electrode

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Chinese Chemical Letters 2011年第4期22卷 465-468页

作者： Yuan Zhen Zhou Hui Wang She Ying dong An xiang tian Zhi Xian He Bin Chen School of Science Xi'an University of Architecture and TechnologyXi'an 710055China

Direct electrochemistry and electrocatalysis of myoglobin（Mb） were studied with Mb immobilized on dodecyltrimethylammonium bromide（DTAB） film modified carbon ceramic（CC） *** voltammetry showed a pair of well-defined and nearly reversible redox peaks of Mb（Fe~Ⅱ/Fe~Ⅲ） at about—0.3 V ***（pH = 6.98）.The currents of the redox peak were linear to scan rate,and rate constant（Ks） was estimated to be 3.03 s^（-1）.The formal potential（E°＇） of Mb in the DTAB/CC electrodes shifted linearly with pH with a slope of -36.44 mV/pH,implying that the electron transfer between DTAB and CC electrodes is accompanied by proton *** immobilized Mb exhibited excellent electrocatalytic response to the reduction of hydrogen peroxide（H2O2）.

关键词： Electrocatalysis Direct electron transfer DTAB H_2O_2 Myoglobin

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我国区域碳排放效率与全要素生产率研究——基于三阶段DEA模型

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经济经纬 2017年第1期34卷 20-25页

作者：相天东西安交通大学经济与金融学院陕西西安710061 河南财政金融学院社会科学部河南郑州461464

我国实现减排承诺必须依赖于碳排放效率和全要素生产率的提高。笔者选取我国30个省(区、市)2000年~2014年的面板数据,运用三阶段DEA模型对我国各地区的碳排放效率和全要素生产率进行实证分析。结果表明:总体上看,所考察的30个省区市综... 详细信息

我国实现减排承诺必须依赖于碳排放效率和全要素生产率的提高。笔者选取我国30个省(区、市)2000年~2014年的面板数据,运用三阶段DEA模型对我国各地区的碳排放效率和全要素生产率进行实证分析。结果表明:总体上看,所考察的30个省区市综合技术效率偏低,西部的综合技术效率最高,东部的纯技术效率最高。东部的技术效率要高于中西部,而西部又高于中部。我国东、中、西部技术进步依次递减。同时,东部全要素生产率也高于中西部。未来我国可以采取增加科研投入、鼓励技术创新与应用、优化产业结构、改善能源结构、提高对外开放的层次与水平等措施来提高我国碳排放效率与全要素生产率。

关键词：碳排放全要素生产率三阶段DEA模型省域

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Multivariate synergy for heightening ionic HOF robustness and proton conductivity

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Science China Chemistry 2025年

作者： xiang-tian Bai Li-Hui Cao Xu-Yong Chen Jia-Yu Wang Zi-Ye Zhou Shaanxi Key Laboratory of Chemical Additives for Industry College of Chemistry and Chemical EngineeringShaanxi University of Science and Technology

Multicomponent crystalline materials construct more complex and diversified structures with different combinations and modes,which expands the material structure space and application *** this work,we have successfully synthesized two twocomponent ionic hydrogen-bonded organic frameworks （iHOF-32 and iHOF-33） and a three-component iHOF （iHOF-34）.Guanidine hydrochloride which is rich in N and H and has a short chain length strengthens the hydrogen bonding network of iHOF,thereby aiding in the efficient migration of *** rigid architecture of 1,1'-diamino-4,4'-bipyridine diiodide furnishes additional scaffolding for the iHOFs and enhances its robustness under harsh ***-34 accomplishes the combination of the ultra-high proton conductivity of iHOF-32 and the robustness of iHOF-33 by the synergistic interaction among the three components of *** addition,iHOF-34 was fabricated as a composite membrane with a peak proton conductivity of 1.55×10-1S cm-1,which is 3.8 times higher than that of recast Nafion,and has extensive potential in fuel *** self-assembly strategy of multicomponent HOFs opens up new avenues for constructing diverse structures while promising new opportunities for applications in the fields of proton conduction and energy storage.

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平面微重力模拟气浮系统的侧向力测量与处理

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系统仿真学报 2018年第10期30卷 3746-3752页

作者：李新峰向东田兴华魏伟中国科学院太空应用重点实验室中国科学院空间应用工程与技术中心北京100094 哈尔滨工业大学气动技术中心哈尔滨150001

利用测力法可直接测量平面气浮系统的侧向力,该方法通过在系统周向布设加载了预紧力的横向张力计,根据浮起前后张力计的变化量可获得气浮系统侧向力及其绕中心转矩;为进一步估计搭接位置的摩擦力,对摩擦系数和侧向力进行联合估计,为解... 详细信息

利用测力法可直接测量平面气浮系统的侧向力,该方法通过在系统周向布设加载了预紧力的横向张力计,根据浮起前后张力计的变化量可获得气浮系统侧向力及其绕中心转矩;为进一步估计搭接位置的摩擦力,对摩擦系数和侧向力进行联合估计,为解决最小二乘算法的矩阵亏秩,将求解状态问题转化为带约束的最小值问题。测试实例结果表明,在一定的预紧力范围内,当静摩擦力不改变测试的运动趋势时,静摩擦有无参与联合状态估计对侧向力的特性估计结果影响有限。

关键词：平面气浮侧向力侧向力转矩摩擦系数亏秩奇异值分解

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Mainchain conformation ordering self-assembly tailored room temperature phosphorescence emission

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Science China Chemistry 2025年第01期 329-336页

作者： Yuzhu Li Yumeng Gao Feng tian Yu Wang Yuan Yao Shaoliang Lin xiang Ma Binbin Xu Shanghai Key Laboratory of Advanced Polymeric Materials Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science and Technology Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Key Laboratory for Advance Materials and Feringa Noble Prize Scientist Joint Research Centre Frontiers Science for Materiobiology and Dynamic Chemistry School of Chemistry and Molecular Engineering East China University of Science & Technology

Developing organic room-temperature phosphorescence （RTP） materials with a wide range of tunable-emission is significant in expanding the applications of RTP ***,we rationally designed amphiphilic alternating copolymers poly(1,2-bis（4-alkoxyphenyl）ethane-1,2-dione-alt-（ethylene glycol）x)(P（Bz-alt-EGx）) that combined the advantage of alternating benzil and EGxskeleton,and tunable mainchain *** a mainchain conformation ordering assembly （COA） process,P（Bz-alt-EGx） self-assembled into well-defined platelets,and such assemblies emitted blue RTP at ca.425 nm due to the ordered folded-chain conformation and confined *** contrast,traditional self-assembly （TA） of P（Bz-alt-EGx） obtained less ordered aggregates,such as asymmetric worms,vesicles,and rod-like *** resultant less ordered aggregates exhibited yellow-green RTP at ca.550 *** wide-tuning RTP emission in solution （between blue and yellow-green,over125 nm） is realized using the P（Bz-alt-EGx） alternating copolymers under the treatment of different self-assembly *** study uncovers a new strategy to tailor the RTP emission through different self-assembly pathways and holds great promise for the fabrication of advanced optical materials.

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Overview and Prospect of Distributed Energy P2P Trading

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Energy Engineering 2025年第1期122卷 379-404页

作者： Jiajia Liu Mingxing tian Xusheng Mao School of Automation and Electrical Engineering Lanzhou Jiaotong UniversityLanzhou730070China

After a century of relative stability in the electricity sector,the widespread adoption of distributed energy resources,along with recent advancements in computing and communication technologies,has fundamentally altered how energy is consumed,traded,and *** change signifies a crucial shift as the power system evolves from its traditional hierarchical organization to a more decentralized *** the heart of this transformation are innovative energy distribution models,like peer-to-peer(P2P)sharing,which enable communities to collaboratively manage their energy *** effectiveness of P2P sharing not only improves the economic prospects for prosumers,who generate and consume energy,but also enhances energy resilience and *** allows communities to better leverage local resources while fostering a sense of collective responsibility and collaboration in energy ***,there is still no extensive implementation of such sharing models in today’s *** on distributed energy P2P trading is still in the exploratory stage,and it is particularly important to comprehensively understand and analyze the existing distributed energy P2P trading *** paper contributes with an overview of the P2P markets that starts with the network framework,market structure,technical approach for trading mechanism,and blockchain technology,moving to the outlook in this field.

关键词： Distributed energy P2P market mechanisms classification and comparison

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Modeling and Capacity Configuration Optimization of CRH5 EMU On-Board Energy Storage System

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Energy Engineering 2025年第1期122卷 307-329页

作者： Mingxing tian Weiyuan Zhang Zhaoxu Su School of Automation and Electrical Engineering Lanzhou Jiaotong UniversityLanzhou730070China

In the context of the“dual carbon”goals,to address issues such as high energy consumption,high costs,and low power quality in the rapid development of electrified railways,this study focused on the China Railways High-Speed 5 Electric Multiple Unit and proposed a mathematical model and capacity optimization method for an onboard energy storage system using lithium batteries and supercapacitors as storage ***,considering the electrical characteristics,weight,and volume of the storage media,a mathematical model of the energy storage system was ***,to tackle problems related to energy consumption and power quality,an energy management strategy was proposed that comprehensively considers peak shaving and valley filling and power quality by controlling the charge/discharge thresholds of the storage *** optimization adopted a bilevel programming model,with the series/parallel number of storage modules as variables,considering constraints imposed by the Direct Current to Direct Current converter,train load,and *** improved Particle Swarm Optimization algorithm and linear programming solver were used to solve specific *** results show that the proposed onboard energy storage system can effectively achieve energy savings,reduce consumption,and improve power qualitywhile meeting the load and space limitations of the train.

关键词： Electrified railway regenerative braking bi-level programming on-board energy storage power quality capacity configuration

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