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Boosting high-performance in Zr-rich side protonic solid oxide electrolysis cells by optimizing functional interlayer

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Green Energy and Environment 2024年第1期10卷 150-160页

作者： Tang, chunmei Wang, Ning Kitano, Sho Habazaki, Hiroki Aoki, Yoshitaka ye, Siyu Huangpu Hydrogen Energy Innovation Center School of Chemistry and Chemical Engineering Guangzhou University No. 230 Wai Huan Xi Road Guangzhou 510006 China Graduate School of Chemical Sciences and Engineering Hokkaido University N13W8 Kita-ku Sapporo 060-8628 Japan Faculty of Engineering Hokkaido University N13W8 Kita-ku Sapporo 060-8628 Japan

Protonic solid oxide electrolysis cells (P-SOECs) are a promising technology for water electrolysis to produce green hydrogen. However, there are still challenges related key materials and anode/electrolyte interface. P-SOECs with Zr-rich electrolyte, called Zr-rich side P-SOECs, possess high thermodynamically stability under high steam concentrations but the large reaction resistances and the current leakage, thus the inferior performances. In this study, an efficient functional interlayer Ba0.95La0.05Fe0.8Zn0.2O3−δ (BLFZ) in-between the anode and the electrolyte is developed. The electrochemical performances of P-SOECs are greatly enhanced because the BLFZ can greatly increase the interface contact, boost anode reaction kinetics, and increase proton injection into electrolyte. As a result, the P-SOEC yields high current density of 0.83 A cm−2 at 600 °C in 1.3 V among all the reported Zr-rich side cells. This work not only offers an efficient functional interlayer for P-SOECs but also holds the potential to achieve P-SOECs with high performances and long-term stability. © 2024 Institute of Process Engineering, Chinese Academy of Sciences

关键词： Regenerative fuel cells

Pyrolysis and co-pyrolysis of lignite and plastic

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International Journal of Mining Science and Technology 2014年第1期24卷 137-141页

作者： Qian chunmei Zhou Min Wei Jianghong ye Puhai Yang Xu Key Laboratory of Coal Processing & Efficient Utilization School of Chemical Engineering & TechnologyChina University of Mining & Technology Shenhua Group Zhungeer Energy Co.Ltd.

The study firstly discusses the pyrolysis characteristics and kinetics by thermogravimetric analysis （TGA）, and then investigates the pyrolysis of lignite and co-pyrolysis with plastic （polyethylene or polypropyl- ene） in tube furnace. Meanwhile, the research focuses on the co-pyrolysis products under different mix- ing ratios as well as pyrolysis products at different testing temperatures and heating rates. The results show that higher final testing temperature and lower heating rate contribute to bond fission in lignite pyrolysis, resulting in less char product. In co-pyrolysis, lignite acts as hydrogen donor, and the yields of char and water rise with increasing amount of plastic in the mixture, while the yields of gas and tar decrease; and a little admixture of plastic will promote the production of gas and tar. Kinetic studies indi- cate that in temperature range of 530-600℃, activation energies of lignite are higher than those of lig- nite/plastic blends, and as plastic mass ratio increases from 0% to 10%, samples need less energy to be decomposed during co-pyrolysis.

关键词： Lignite Pyrolysis Co-pyrolysis Polyethylene Polypropylene

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海南省农业生态效率时空特征及影响因素研究

热带作物学报 2025年第1期46卷 236-245页

作者：梁伟红邓春梅叶露刘燕群王丹阳李玉萍中国热带农业科学院科技信息研究所/海南省热带作物信息技术应用研究重点实验室海南海口571101

基于海南省18个市(县)2012—2022年县域行政单元农业面板数据,运用非期望产出超效率SBM模型,结合空间相关性分析方法,分析海南省农业生态效率时空演变特征,并利用Tobit回归模型探究其影响因素。结果表明:(1)2012—2022年,海南省农业生... 详细信息

基于海南省18个市(县)2012—2022年县域行政单元农业面板数据,运用非期望产出超效率SBM模型,结合空间相关性分析方法,分析海南省农业生态效率时空演变特征,并利用Tobit回归模型探究其影响因素。结果表明:(1)2012—2022年,海南省农业生态效率均值呈现中部地区>西部地区>东部地区的明显分级特征;海南省市(县)域尺度农业生态效率逐年明显改善,农业生态效率均值为0.541,达到均值以上的市(县)数为7个。(2)空间变化上,总体呈现中部向东西部扩散的空间分布特征,同时完全有效和效率较高呈现块状和链条式分布特征,效率中等类型市(县)围绕着完全有效和效率较高市(县)分布;南北方向和东西方向的投影趋势线均呈现倒“U”型特征。(3)在省域尺度下,农民收入水平、农业机械化强度、农业化学投入品使用强度和城镇化率是对海南省农业生态效率时空演变产生影响的主要因素;在不同区域尺度下,农民收入水平是对东部地区农业生态效率产生影响的主要因素,城镇化率、农业化学投入品使用强度和农田灌溉率是对中部地区农业生态效率产生影响的主要因素,城镇化率、农民收入水平、农业产业结构、农业化学投入品使用强度和农田灌溉率是对西部地区农业生态效率产生影响的主要因素。总体而言,海南省各市(县)农业生态效率整体呈上升趋势,各区域农业生态效率存在一定差异。未来应因地制宜探索不同地区农业发展重点,切实提升农业生态效率。

关键词：农业生态效率影响因素超效率SBM模型 Tobit模型海南省

Soil Nitrogen Distribution and Plant Nitrogen Utilization in Direct-Seeded Rice in Response to Deep Placement of Basal Fertilizer-Nitrogen

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Rice science 2019年第6期26卷 404-415页

作者： WANG Danying ye Chang XU chunmei WANG Zaiman CHEN Song CHU Guang ZHANG Xiufu State Key Laboratory of Rice Biology China National Rice Research Institute Hangzhou 310006 China Key Laboratory of Key Technology on Agricultural Machine and Equipment Ministry of Education / South China Agricultural University Guangzhou 510642 China

Deep placement of controlled-release fertilizer increases nitrogen (N) use efficiency in rice planting but is expensive. Few studies on direct-seeded rice have examined the effects of deep placement of conventional fertilizer. With prilled urea serving as N fertilizer, a two-year field experiment with two N rates (120 and 195 kg/hm2) and four basal N application treatments (B50, all fertilizer was broadcast with 50% as basal N;D50, D70 and D100 corresponded to 50%, 70% and 100% of N deeply placed as basal N, respectively) were conducted in direct-seeded rice in 2013 and 2014. Soil N distribution and plant N uptake were analyzed. The results showed that deep placement of basal N significantly increased total N concentrations in soil. Significantly greater soil N concentrations were observed in D100 compared with B50 at 0, 6 and 12 cm (lateral distance) from the fertilizer application point both at mid-tillering and heading stages. D100 presented the highest values of dry matter and N accumulation from seeding to mid-tillering stages, but it presented the lowest values from heading to maturity stages and the lowest grain yield for no sufficient N supply at the reproductive stage. The grain yield of D50 was the highest, however, no significant difference was observed in grain yield, N agronomic efficiency or N recovery efficiency between D70 and D50, or between D70 and B50, while D70 was more labor saving than D50 for only one topdressing was applied in D70 compared with twice in other treatments. The above results indicated that 70% of fertilizer-N deeply placed as a basal fertilizer and 30% of fertilizer-N topdressed as a panicle fertilizer constituted an ideal approach for direct-seeded rice. This recommendation was further verified through on-farm demonstration experiments in 2015, in which D70 produced in similar grain yields as B50 did.

关键词： direct-seeded rice nitrogen fertilizer deep placement soil nitrogen distribution nitrogen utilization

腰椎间盘突出症突出物自然吸收与腰椎曲度的相关性研究

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安徽医药 2022年第9期26卷 1839-1842页

作者：陈晓荣秦少华周林江袁莉叶春梅韩云学上海市宝山区仁和医院放射科上海200431 复旦大学附属华山医院放射科上海200040

目的研究腰椎间盘突出症组织不同程度自然吸收与腰椎曲度的相关性。方法回顾分析上海市宝山区仁和医院2015年1月至2019年6月CT检查确诊腰椎间盘突出症病人61例,均为保守治疗,并具有6~24个月随访复查资料。根据突出物自然吸收程度分为明... 详细信息

目的研究腰椎间盘突出症组织不同程度自然吸收与腰椎曲度的相关性。方法回顾分析上海市宝山区仁和医院2015年1月至2019年6月CT检查确诊腰椎间盘突出症病人61例,均为保守治疗,并具有6~24个月随访复查资料。根据突出物自然吸收程度分为明显重吸收组(10例),部分重吸收组(8例),基本不变组(30例),增大组(13例)四组,配对比较每组腰椎曲线指数、腰椎前凸角变化,并进行相关分析。结果腰椎间盘突出症明显重吸收组、部分重吸收组、基本不变组、增大组的首次CT检查腰椎曲线指数、腰椎前凸角比较,差异无统计学意义(P>0.05);经治疗后随访CT腰椎曲线指数[10.65(9.23,13.31)mm比11.69(8.31,15.25)mm比8.63(6.75,11.00)mm比8.06(5.00,10.05)mm]、腰椎前凸角[46.30(43.96,48.18)°比45.36(44.15,47.67)°比39.37(32.27,45.74)°比35.39(29.60,43.16)°]比较,差异有统计学意义(P0.05)。腰椎间盘突出症自然吸收程度与腰椎曲线指数、腰椎前凸角变化均呈正相关(r_(s)=0.50、0.47,P<0.05)。结论腰椎曲线指数及腰椎前凸角随着腰椎突出椎间盘自然吸收而增大,当腰椎突出椎间盘增大时腰椎曲线指数及腰椎前凸角也相应减小。腰椎间盘突出症组织自然吸收程度与腰椎曲度变化呈正相关。

关键词：椎间盘移位腰椎重吸收腰椎曲度腰椎曲线指数腰椎前凸角

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社会发展因素对恶性肿瘤过早死亡长期趋势的影响

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中国农村卫生事业管理 2021年第6期41卷 452-456页

作者：陈青华叶春梅张英刘天娥韩荣荣胡永勤杭州市余杭区疾病预防控制中心慢性病防治科浙江杭州311100

目的探讨社会因素在控制恶性肿瘤过早死亡中的作用。方法收集2010—2019年杭州市余杭区恶性肿瘤死亡人数、社会经济GDP、卫生事业投入和医疗保险等数据,采用生态趋势比较法分析各种社会因素变化对恶性肿瘤过早死亡的影响,采用SPSS 22.0... 详细信息

目的探讨社会因素在控制恶性肿瘤过早死亡中的作用。方法收集2010—2019年杭州市余杭区恶性肿瘤死亡人数、社会经济GDP、卫生事业投入和医疗保险等数据,采用生态趋势比较法分析各种社会因素变化对恶性肿瘤过早死亡的影响,采用SPSS 22.0软件对数据进行统计分析。结果 2010年—2019年杭州市余杭区各年度恶性肿瘤死亡率介于142.22/10万~162.49/10万,年度变动趋势无统计学意义(APC=-0.05%,P>0.05),其中30岁~69岁组过早死亡数占总死亡数49.66%,过早死亡概率介于4.88%~7.09%,呈下降趋势(APC=-3.50,P<0.05),2019年较2010年绝对下降了1.49个百分点。同期社会经济GDP、卫生事业投入和医疗保险参保人数均有大幅增长(APC分别为17.36、19.18、8.42,P<0.05)。2019年较2010年,社会经济GDP绝对增长2 195.19亿元,卫生事业投入增长16.9亿元,基本医疗保险参保人数增加了46.12万人。这些社会因素变动与恶性肿瘤早死概率呈负相关联系(r值分别为-0.86、-0.83、-0.92,P<0.05)。结论社会经济增长等社会因素促进了地区肿瘤防治水平的整体提高,对恶性肿瘤过早死亡控制产生了积极效果。

关键词：社会因素恶性肿瘤早死概率长期趋势肿瘤三级预防

经皮微创与常规切开椎弓根螺钉内固定治疗不稳定性胸腰椎骨折的临床分析

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临床研究 2019年第8期27卷 66-67页

作者：陈伟兵曾智仁戴勇廖文杰叶春梅张燕文东莞市清溪医院外二科

目的分析不稳定性胸腰椎骨折(TLF)应用经皮微创椎弓根螺钉内固定(MIPPSO)与常规切开椎弓根螺钉内固定(COPSIF)治疗的疗效。方法选择2015年10月-2018年10月东莞市清溪医院收治的不稳定性TLF患者60例进行分组研究,以随机数表法分为观察组... 详细信息

目的分析不稳定性胸腰椎骨折(TLF)应用经皮微创椎弓根螺钉内固定(MIPPSO)与常规切开椎弓根螺钉内固定(COPSIF)治疗的疗效。方法选择2015年10月-2018年10月东莞市清溪医院收治的不稳定性TLF患者60例进行分组研究,以随机数表法分为观察组与对照组,每组30例。对照组用COPSIF治疗,观察组用MIPPSO治疗,记录两组手术时间、切口长度、手术出血量、住院时间,评价术前与术后伤椎前缘高度、后凸Cobb角、矢状位指数,并比较。结果两组手术时间比较无显著差异(P>0.05),但观察组切口长度、手术出血量、住院时间均低于对照组,差异有统计学意义(P0.05),术后两组对比也无显著差异(P>0.05)。结论MIPPSO与COPSIF治疗不稳定性TLF患者对伤椎前缘高度、后凸Cobb角、矢状位指数影响效果相当,同时二者手术时间并无显著差异,但MIPPSO手术切口更小,手术出血量更少,还可缩短手术时间,值得临床应用。

关键词：不稳定性胸腰椎骨折经皮微创常规切开椎弓根螺钉内固定疗效

Effects of increasing panicle-stage N on yield and N use efficiency of indica rice and its relationship with soil fertility

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The Crop Journal 2022年第6期10卷 1784-1797页

作者： Chang ye Hengyu Ma Xiu Huang chunmei Xu Song Chen Guang Chu Xiufu Zhang Danying Wang The State Key Laboratory of Rice Biology China National Rice Research InstituteHangzhou 310006ZhejiangChina

Because of the higher nitrogen(N)recovery efficiency(NRE)of panicle-stage fertilization compared with basal and tillering fertilization,increasing the proportion of N topdressing at the booting stage(panicleN)is recommended and commonly practiced in parts of *** investigate the effects of increasing panicle-N on grain yield and N use efficiency(NUE)and the relationships of the increase and the rice cultivar and soil fertility status,we increased the percentage of panicle-N from 20%to 40%by correspondingly reducing the N amount applied only at the tillering stage in both high-and low-fertility blue clayey paddy fields in 2018 and *** indica cultivars with diverse panicle types were used,and their grain yield,dry matter accumulation,and NUE were *** high-fertility soil,increasing topdressing panicle-N from 20%to 40%reduced tillering ability and reduced the effective panicle numbers of the multi-and medium-panicle cultivars Huanghuazhan(HHZ),C Liangyouhuazhan(CHZ),and Tianyouhuazhan(THZ).These cultivars gave the greatest yield when 30%of N was supplied as panicle fertilizer,whereas the yield,NRE,N agronomic efficiency(NAE),and nitrogen physiological efficiency(NPE)of the heavy-panicle inbred cultivar Yangdao 6(YD6)continued to increase,resulting in improved dry matter accumulation and grain filling in the late growth *** yield,NAE,NRE,and NPE of YD6 peaked when the panicle-N constituted 40%.While in low-fertility soil,the multipanicle cultivar HHZ showed the greatest yield when 30%of fertilizer-N was applied once at the panicle initiation(PI)stage,while the medium-panicle cultivar CHZ showed the greatest yield when the panicle-N percentage was 40%.Our results suggest that the percentage of panicle-N fertilizer should not exceed 30%for multipanicle cultivars,while can be appropriately increased to 40%for heavy-panicle indica *** effect of increasing topdressing panicle-N on the yield of medium-panicle cultivars was related to soil fert

关键词： Indica rice Panicle-N Yield Nitrogen use efficiency Soil fertility

Metal-Support Interactions on Ag/Co_(3)O_(4)Nanowire Monolithic Catalysts Promoting Catalytic Soot Combustion

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Transactions of Tianjin University 2022年第3期28卷 174-185页

作者： Xingwang Yi Yuexi Yang Dawei Xu ye Tian Song Song chunmei Cao Xingang Li School of Chemical Engineering&Technology Tianjin UniversityTianjin 300350China Institute of Shaoxing Tianjin UniversityShaoxing 312000China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin Key Laboratory of Applied Catalysis Science and EngineeringTianjin UniversityTianjin 300350China School of Chemical Engineering Zhengzhou UniversityZhengzhou 45000China

Tuning metal-support interactions(MSIs)is an important strategy in heterogeneous catalysis to realize the desirable metal dispersion and redox ability of metal ***,we use pre-reduced Co_(3)O_(4)nanowires(Co-NWs)in situ grown on monolithic Ni foam substrates to support Ag catalysts(Ag/Co-NW-R)for soot *** macroporous structure of Ni foam with crossed Co_(3)O_(4)nanowires remarkably increases the soot-catalyst contact effi *** characterization results demonstrate that Ag species exist as Ag 0 because of the equation Ag^(+)+Co^(2+)=Ag^(0)+Co^(3+),and the pre-reduction treatment enhances interactions between Ag and Co_(3)O_(4).The number of active oxygen species on the Ag-loaded catalysts is approximately twice that on the supports,demonstrating the signifi cant role of Ag sites in generating active oxygen ***,the strengthened MSI on Ag/Co-NW-R further improves this number by increasing metal dispersion and the intrinsic activity determined by the turnover frequency of these oxygen species for soot oxidation compared with the catalyst without pre-reduction of Co-NW(Ag/Co-NW).In addition to high activity,Ag/Co-NW-R exhibits high catalytic stability and water *** strategy used in this work might be applicable in related catalytic systems.

关键词： Metal-support interaction Monolithic catalysts Ag Co_(3)O_(4)nanowires Soot oxidation