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Better engineering layered vanadium oxides for aqueous zinc‐ion batteries: Going beyond widening the interlayer spacing

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SmartMat 2024年第1期5卷 83-109页

作者： Yue Guo Hanmei Jiang Binbin Liu xingyang Wang Yifu Zhang Jianguo Sun John Wang Department of Materials Science and Engineering National University of SingaporeSingaporeSingapore State Key Laboratory of Fine Chemicals School of Chemical EngineeringDalian University of TechnologyDalianChina Institute of Materials Research and Engineering(IMRE) Agency for ScienceTechnology and Research(A*STAR)SingaporeSingapore

Aqueous zinc‐ion batteries(ZIBs)are regarded as among the most promising candidates for large‐scale grid energy storage,owing to their high safety,low costs,and environmental friendliness.Over the past decade,vanadium oxides,which are exemplified by V2O5,have been widely developed as a class of cathode materials for ZIBs,where the relatively high theoretical capacity and structural stability are among the main considerations.However,there are considerable challenges in the construction of vanadium‐based ZIBs with high capacity,long lifespan,and excellent rate performance.Simple widenings of the interlayer spacing in the layered vanadium oxides by pre‐intercalations appear to have reached their limitations in improving the energy density and other key performance parameters of ZIBs,although various metal ions(Na+,Ca2+,and Al3+)and even organic cations/groups have been explored.herein,we discuss the advances made more recently,and also the challenges faced by the high‐performance vanadium oxides(V2O5‐based)cathodes,where there are several strategies to improve their electrochemical performance ranging from the new structural designs down to sub‐nano‐scopic/molecular/atomic levels,including cation pre‐intercalation,structural water optimization,and defect engineering,to macroscopic structural modifications.The key principles for an optimal structural design of the V2O5‐based cathode materials for high energy density and fast‐charging aqueous ZIBs are examined,aiming at paving the way for developing energy storage designed for those large scales,high safety,and low‐cost systems.

关键词： aqueous zinc‐ion batteries cations pre‐intercalation defect engineering structural water vanadium oxides

Effect of Steel Slag and Granulated Blast-furnace Slag on the Mechanical Strength and Pore Structure of Cement Composites

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Journal of Wuhan University of Technology(Materials Science) 2018年第5期33卷 1186-1192页

作者：徐刚 he xingyang 何亚伯 School of Civil Engineering Wuhan University Building Waterproof Engineering and Technology Research Center of Hubei Province Hubei University of Technology

Reuse of solid industrial wastes is an effective approach to develop low-carbon construction materials. This paper examines how two materials, steel slag（ST） and granulated blast-furnace slag（SL） impact the mechanical performance and pore structure of cement-based systems. Analysis was done on the variations of the porosity, pore size, and pore volume distribution with the curing age and replacement content, and the fractal dimensions of pore surfaces. The results suggested that systems with both supplementary materials had lower early strengths than pure cement, but could generally surpass pure cement paste after 90 d; higher SL content was particularly helpful for boosting the late strengths. The addition of ST increased the porosities and mean pore sizes at each age, and both increased with ST content; SL was helpful for decreasing the system＇s late porosity（especially harmless pores below 20 nm）; The lowest porosity and mean pore size were obtained with 20% SL. Both systems had notably fractal characteristics on pore surfaces, with ST systems showing the highest dimensions at 10% ST, and SL systems at 20% SL. Compressive strength displayed a significant linear increase with fractal dimension.

关键词： steel slag granulated blast-furnace slag mechanical performance pore structure fractal dimension

Influence of Annealing on the Structure of Silica Glass

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Journal of Wuhan University of Technology(Materials Science) 2013年第5期28卷 902-906页

作者：苏英 YIN Hong he xingyang 周永恒 Laboratory of Nanophotonic Functional Materials and Devices South China Normal University School of Civil Engineering and Architecture Hubei University of Technology

Two types of high-purity synthetic silica glasses were annealed with different processes in precision annealing furnace. The thermal stress and structure of samples were analyzed by two types of stress instruments and Fourier transform infrared spectrometer. After being annealed at1 070 ℃ for 6 days and then cooled slowly, optical path difference （OPD） caused by stress in the center and edge of Type III silica glass with a diameter of 150 mm and thickness of 50 mm decreased from 6 to 2 nm/cm. Meanwhile, with the same annealing process, fictive temperature of small-size Type III glass decreased to 939 ℃, and structural stability of silica glass was improved. In addition, after being annealed at 1 100 ℃ for 5 hours and then cooled slowly, internal stress in Type IV silica glass with a thickness of 1 mm was basically eliminated, and its fietive temperature decreased from 1 421 to 966 ℃.

关键词： silica glass annealing thermal stress fictive temperature

Laboratory Evaluation for Utilization of Phosphogypsum through Carbide Slag Highly-Effective Activating Anhydrous Phosphogypsum

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Journal of Wuhan University of Technology(Materials Science) 2021年第3期36卷 392-399页

作者：陈顺 XIONG Guoqing 苏英 he xingyang XIE Yunxuan WANG Yunfeng GONG Minhua School of Civil Engineering Architecture and EnvironmentHubei University of TechnologyWuhan 430068China Building Water-proof Engineering and Technology Research Center of Hubei Province Hubei University of TechnologyWuhan 430070China Hubei Jinlu Energy Saving Co. LtdHuangshi 435000China

Carbide slag was used as an activator to improve the activity of anhydrous phosphogypsum.Carbide slag could greatly improve the mechanical strength of anhydrous phosphogypsum than K_(2)SO_(4).The compressive strength of 11 wt%carbide slag and 1 wt%K_(2)SO_(4)activated anhydrous phosphogypsum increased greatly to 8.6 MPa at 3 d,and 11.9 MPa at 7 d,and 16.0 MPa at 28 d,respectively.The rate of hydration heat was accelerated and the total hydration heat was increased,and more calcium sulfate dihydrate was formed and cross-linked with other parts which improved the compressive strength of anhydrous phosphogypsum under the effects of different activators.It was indicated that carbide slag was a highly effective and cost-efficient activator.The result provides a highly effective and low-cost method which results in a novel and high value-added method for the utilization of phosphogypsum in the future.

关键词： anhydrous phosphogypsum activation carbide slag K_(2)SO_(4) compressive strength

Use of Different Barium Salts to Inhibit the Thaumasite Form of Sulfate Attack in Cement-based Materials

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Journal of Wuhan University of Technology(Materials Science) 2016年第2期31卷 361-366页

作者：苏英 WEI Xiaochao 黄健 WANG Yingbin he xingyang WANG Xiongjue MA Baoguo School of Civil Engineering and Architecture Hubei University of Technology Wuhan 430068 China State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology Wuhan 430068 China

We investigated the effects of different barium compounds on the thaumasite form of sulphate attack（TSA）resistance of cement-based materials when they were used as admixtures in mortars.Moreover,we analyzed the inhibition mechanisms within different types of barium salts,namely BaCO_3 and Ba（OH）_2,on the thaumasite formation.The controlcement mortar and mortars with barium salts to cement and limestone weight ratios of 0.5%,1.0%,and 1.5% were immersed in 5%（by weight）MgSO_4 solution at 5 ℃ to mimic TSA.Appearance,mass,and compressive strength of the mortar samples were monitored and measured to assess the generaldegradation extent of these samples.The products of sulphate attack were further analyzed by XRD,FTIR,and SEM,respectively.Experimentalresults show that different degradation extent is evident in allmortars cured in MgSO_4 solution.However,barium salts can greatly inhibit such degradation.Barium in hydroxide form has better effectiveness in protection against TSA than carbonate form,which may be due to their solubility difference in alkaline cement pore solution,and the presence of these barium compounds can reduce the degree of TSA by comparison with the almost completely decomposed controlsamples.

关键词： thaumasite BaCO_3 Ba（OH）_2 degeneration

Cell softness reveals tumorigenic potential via ITGB8/AKT/glycolysis signaling in a mice model of orthotopic bladder cancer

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Chinese Medical Journal 2024年第2期137卷 209-221页

作者： Shi Qiu Yaqi Qiu Linghui Deng Ling Nie Liming Ge Xiaonan Zheng Di Jin Kun Jin Xianghong Zhou xingyang Su Boyu Cai Jiakun Li Xiang Tu Lina Gong Liangren Liu Zhenhua Liu Yige Bao Jianzhong Ai Tianhai Lin Lu Yang Qiang Wei Department of Urology Institute of UrologyNational Clinical Research Center for Geriatrics and Center of Biomedical Big DataWest China Hospital of Sichuan UniversityChengduSichuan 610041China Department of Molecular Oncology Institute of Oncology Research(IOR)Oncology Institute of Southern Switzerland(IOSI)Bellinzona 6500Switzerland Department of Science and Drug Technology University of TurinTurinItaly National Clinical Research Center of Geriatrics The Center of Gerontology and GeriatricsWest China HospitalSichuan UniversityChengduSichuan 610000China Department of Pathology West China HospitalSichuan UniversityChengduSichuan 610041China Department of Pharmaceutics and Bioengineering School of Chemical EngineeringSichuan UniversityChengduSichuan 610000China

Background:Bladder cancer,characterized by a high potential of tumor recurrence,has high lifelong monitoring and treatment costs.To date,tumor cells with intrinsic softness have been identified to function as cancer stem cells in several cancer types.Nonetheless,the existence of soft tumor cells in bladder tumors remains elusive.Thus,our study aimed to develop a microbarrier microfluidic chip to efficiently isolate deformable tumor cells from distinct types of bladder cancer cells.Methods:The stiffness of bladder cancer cells was determined by atomic force microscopy(AFM).The modified microfluidic chip was utilized to separate soft cells,and the 3D Matrigel culture system was to maintain the softness of tumor cells.Expression patterns of integrinβ8(ITGB8),protein kinase B(AKT),and mammalian target of rapamycin(mTOR)were determined by Western blotting.Double immunostaining was conducted to examine the interaction between F-actin and tripartite motif containing 59(TRIM59).The stem-cell-like characteristics of soft cells were explored by colony formation assay and in vivo studies upon xenografted tumor models.Results:Using our newly designed microfluidic approach,we identified a small fraction of soft tumor cells in bladder cancer cells.More importantly,the existence of soft tumor cells was confirmed in clinical human bladder cancer specimens,in which the number of soft tumor cells was associated with tumor relapse.Furthermore,we demonstrated that the biomechanical stimuli arising from 3D Matrigel activated the F-actin/ITGB8/TRIM59/AKT/mTOR/glycolysis pathways to enhance the softness and tumorigenic capacity of tumor cells.Simultaneously,we detected a remarkable up-regulation in ITGB8,TRIM59,and phospho-AKT in clinical bladder recurrent tumors compared with their non-recurrent counterparts.Conclusions:The ITGB8/TRIM59/AKT/mTOR/glycolysis axis plays a crucial role in modulating tumor softness and stemness.Meanwhile,the soft tumor cells become more sensitive to chemotherapy after stiffening,that offers new insights fo

关键词： Soft tumor cells 3D Matrigel Stemness Non-muscle invasive bladder neoplasms Microfluidic analytical techniques

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气候行动最前线的高标准农田生产气象保障

气象 2024年第3期50卷 265-274页

作者：周广胜何奇瑾宋兴阳吕晓敏周莉中国气象科学研究院灾害天气国家重点实验室北京100081 河北固城农业气象国家野外科学观测研究站保定072656 中国农业大学资源与环境学院北京100193

以变暖为主要特征的全球气候变化已经严重威胁到全球粮食安全,高标准农田建设作为农业适应气候变化的重要措施已经在中国推广实施。为助力气候变暖影响下的高标准农田生产,文章梳理了国际土地整理与我国高标准农田建设历程,并从高标准... 详细信息

以变暖为主要特征的全球气候变化已经严重威胁到全球粮食安全,高标准农田建设作为农业适应气候变化的重要措施已经在中国推广实施。为助力气候变暖影响下的高标准农田生产,文章梳理了国际土地整理与我国高标准农田建设历程,并从高标准农田适宜性评价、土地要素配置的粮食效应、高标准农田监督管理和高标准农田建设效益评价四个方面综述了高标准农田的最新研究进展,指出目前缺乏高标准农田生产气象保障相关研究。在此基础上,针对高标准农田旱涝保收、抗灾能力强和生态良好“三位一体”的要求,提出气象助力高标准农田生产应加强三个方面研究:农田生态系统气候水资源相互作用与农田节水灌溉;主要粮食作物气象灾变精准监测模拟与快速解析归因;农田生态气象风险敏感因子检测及其气象监测评价,以实现气象为农服务提质增效,助力高标准农田高产增效。

关键词：高标准农田气候节水灌溉作物气象灾变生态气象风险

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中国电影导演概念的历史发生与现当代走向

南京社会科学 2024年第6期 108-118页

作者：韦漪李兴阳南京大学文学院南京210023 南京大学中国新文学研究中心南京210023

在中国电影文化工业与电影知识体系中,“导演”都是一个极为重要的存在。而用以指称电影导演制度、“导演者”、导演方法等的“导演”概念,是一个外来词汇,于1921年由电影人陆洁译介到中国。“导演”概念的适时出现,迅速将中国早期电影... 详细信息

在中国电影文化工业与电影知识体系中,“导演”都是一个极为重要的存在。而用以指称电影导演制度、“导演者”、导演方法等的“导演”概念,是一个外来词汇,于1921年由电影人陆洁译介到中国。“导演”概念的适时出现,迅速将中国早期电影导演制度、导演意识、导演理论与导演方法等,从自发导向自觉。在广泛传播与运用的过程中,“导演”概念的内涵被更多地赋予了中国早期的电影“影戏观”与导演经验,分化出偏重戏剧表演的“导‘演’”观与偏重电影语言的“导‘影’”观。在百年历史浮沉中,两种倾向交织而成的中国电影导演观念不断发展,“导演”由此成为一个颇为中国化的概念。“导演”这一概念具有独特的现当代走向,信息技术的革新伴随着导演角色走向现代化,制作方法的变革伴随着导演能力走向现代化,叙事手法的多样伴随着导演知识走向现代化,电影产业的演变伴随着导演地位走向现代化。

关键词：中国电影导演概念发生史现代走向

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化学外加剂对粉煤灰湿法细化活化的影响

材料导报 2024年第5期38卷 184-190页

作者：谭洪波孔祥辉贺行洋李懋高苏英蹇守卫杨进武汉理工大学硅酸盐建筑材料国家重点实验室武汉430070 湖北工业大学土木建筑与环境学院武汉430064

将粉煤灰(FA)作为矿物掺合料使用,是降低胶凝材料碳排放的重要手段之一,但其早期活性低是学者们普遍关注的问题。本研究提出在湿磨过程中引入化学功能组分来提升FA细化活化效率的技术思路;通过激光粒度仪(PSD)、pH仪、全谱直读等离子体... 详细信息

将粉煤灰(FA)作为矿物掺合料使用,是降低胶凝材料碳排放的重要手段之一,但其早期活性低是学者们普遍关注的问题。本研究提出在湿磨过程中引入化学功能组分来提升FA细化活化效率的技术思路;通过激光粒度仪(PSD)、pH仪、全谱直读等离子体发射光谱仪(ICP)、XRD、SEM和TG-DTG等测试手段评价了FA的物化性能及活性指数,揭示了液相研磨机械力和化学溶蚀协同作用机理。结果表明:引入TIPA、TEA、NaOH、Na_(2)SO_(4)及电石渣(CS)化学功能组分优化了湿磨的液相环境介质,可显著提升湿磨效率;当FA的中值粒径降低至2μm时,TIPA+CS作用效果最为显著,研磨时间由原来的120 min缩短至40 min,缩短67%。从活性指数的角度来看,1 d龄期时,Na_(2)SO_(4)作用效果最为显著,湿磨FA的活性指数达到60.1%;3 d、7 d、28 d龄期时,TIPA+CS作用效果较好,湿磨FA的活性指数分别可达到81.3%、89.1%、97%。在液相研磨机械力作用过程中,液相环境介质可溶蚀粉煤灰表面,促进表面[AlO_(4)]和[SiO_(4)]的解聚,加速离子溶出,形成钙矾石、C-S-H凝胶等水化产物,显著提升FA的湿磨细化活化效率。

关键词：粉煤灰湿法研磨液相环境掺合料活性指数