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Journal of Advanced Ceramics 2024年第1期13卷 63-72页

作者： Min Fu Wenjing Hu hua tong Xin Ling Linggui Tan Fanglin Chen Zetian Tao School of Resources Environment and Safety EngineeringUniversity of South ChinaHengyang 421001China Department of Mechanical Engineering University of South CarolinaColumbia 29208USA

One potential solution to the problems of energy storage and conversion is the use of reversible protonic ceramic electrochemical cells(R-PCEC),which are based on the solid oxide fuel cell(SOFC)technology and offer a flexible route to the generation of renewable ***,the R-PCEC development faces a range of significant challenges,including slow oxygen reaction kinetics,inadequate durability,and poor round-trip efficiency resulting from the inadequacy of an air *** address these issues,we report novel B-sites doped Pr_(0.5)Ba_(0.5)Co_(0.7)Fe_(0.3)O_(3−δ)(PBCF)with varying amounts of Sn as the air electrode for R-PCEC to further enhance electrochemical performance at lower *** 600℃,R-PCEC with an air electrode consisting of Pr_(0.5)Ba_(0.5)Co_(0.7)Fe_(0.25)Sn_(0.05)O_(3+δ)has achieved peak power density of 1.12 W∙cm^(−2) in the fuel cell mode and current density of 1.79 A∙cm^(−2) in the electrolysis mode at a voltage of 1.3 ***,R-PCECs have shown good stability in the electrolysis mode of 100 *** study presents a practical method for developing durable high-performance air electrodes for R-PCECs.

关键词： triple conducting oxide dual-element doping protonic ceramic electrochemical cells(PCECs) catalytic

充分运用《中国共产党重要文献汇编》资源厚植“中国近现代史纲要”课教学内容

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思想教育研究 2024年第1期 70-75页

作者：仝华北京大学马克思主义学院北京100871 北京大学中国特色社会主义理论体系研究中心北京100871

2022年8月《中国共产党重要文献汇编》首批12卷出版发行。充分运用这套文献资源,对我们讲好“中国近现代史纲要”课十分有益。其中该文献集第1卷,共收录文献百余篇(含篇组),从一个重要方面反映了党在筹备创建阶段和正式成立不足半年间... 详细信息

2022年8月《中国共产党重要文献汇编》首批12卷出版发行。充分运用这套文献资源,对我们讲好“中国近现代史纲要”课十分有益。其中该文献集第1卷,共收录文献百余篇(含篇组),从一个重要方面反映了党在筹备创建阶段和正式成立不足半年间从多方面所做的工作。我们应该高度重视对它的认真研读和充分运用,以进一步认识中国共产党成立的历史必然性及其伟大意义,并从中感悟这段历史对我们在新时代奋进新征程的鞭策与砥砺。

关键词：《中国共产党重要文献汇编》第1卷 “中国近现代史纲要”课教学中国共产党筹备创建中国共产党成立

Bioinspired Double-stranded Yarn with Alternating Hydrophobic/Hydrophilic Patterns for High-efficiency Fog Collection

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Chinese Journal of Polymer Science 2024年第7期42卷 968-975,I0008页

作者： Lan-Lan Hou Meng-Na Qiu Ya-Qiong Wang tong-hua Bai Zhi-Min Cui Jing-Chong Liu Ying-Qun Qi Nü Wang Yong Li Yong Zhao Beijing Institute of Graphic Communication Beijing102600China Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education Beijing Key Laboratory of Bioinspired Energy Materials and DevicesSchool of ChemistryBeijing Advanced Innovation Center for Biomedical EngineeringBeihang UniversityBeijing100191China Key Laboratory of Cryogenics Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing100190China Beijing Key Laboratory for Bioengineering and Sensing TechnologyDaxing Research InstituteSchool of Chemistry and Biological EngineeringUniversity of Science and Technology BeijingBeijing100083China

Efforts to develop innovative water harvesting strategies offer powerful solutions to alleviate the water crisis,especially in remote and arid *** by the hydrophobic/hydrophilic pattern of desert beetles and water self-propulsion property of spider silks,a double-strand hydrophobic PVDF-HFP/hydrophilic PAN nanofibers yarn is proposed by electrospinning and twisting *** double-strand cooperation approach allows for water deposition on hydrophobic PVDF-HFP segment and transport under the asymmetric capillary driving force of hydrophilic PAN segment,thus speeded up the aggregation and growth of *** effects of the composition and the diameter ratio of the two primary yarns were studied and optimized for boosting fog collection *** double-strand anisotropic yarn not only provide an effective method for water harvesting,but also hold the potential to inspire innovative design concepts for fog collection materials in challenging environments.

关键词： Fog collection Wettability Electrospinning Nanofibers Spider silk

以泡沫镍为基底的Fe、Cu双金属复合电极对亚铁络合脱硝液的还原性能探究

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环境工程学报 2024年第5期18卷 1395-1405页

作者：梁越丁静童华北京化工大学化学工程学院北京100029

以EDTA为螯合剂的亚铁络合脱硝液能够快速吸收NO,但其面临着还原再生效率低下的问题。针对吸收产物Fe(Ⅱ)EDTA-NO(F-NO)和Fe(Ⅲ)EDTA的阴极催化电化学还原制备了一种以泡沫镍为基底的Fe、Cu双金属复合电极,通过SEM、XPS、XRD等材料表征... 详细信息

以EDTA为螯合剂的亚铁络合脱硝液能够快速吸收NO,但其面临着还原再生效率低下的问题。针对吸收产物Fe(Ⅱ)EDTA-NO(F-NO)和Fe(Ⅲ)EDTA的阴极催化电化学还原制备了一种以泡沫镍为基底的Fe、Cu双金属复合电极,通过SEM、XPS、XRD等材料表征分析验证了此电极制备方法的可行性。电化学催化活性测试表明,还原FNO时设定阴极电位为-0.5 V(***),pH为3~4之间,可以实现72.6%的F-NO还原率和83.19%的NH_(4)^(+)选择性;还原Fe3+时选定阴极电位为-1.2 V(***),pH=2~3,此时还原产生Fe^(2+)的法拉第效率最高可以达到76.14%。此外,还考察了此电极连续工作10 h的还原效果,结果证明了其在实际运行中具有良好的稳定性。

关键词：电催化还原复合型电极亚铁络合脱硝液 Fe(Ⅱ)EDTA-NO Fe(Ⅲ)EDTA

含四芳基咪唑结构的热重排气体分离膜的制备与性能研究

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高分子学报 2024年第2期55卷 212-221页

作者：李品儒肖国勇陈元林鲁云华李琳王同华辽宁科技大学化工学院鞍山114051 大连理工大学化工学院精细化工国家重点实验室碳素实验室大连116024

合成了一种新型含四芳基咪唑结构的二胺单体4,4’-(4,5-二苯基-(3-羟基-4-氨基苯氧基)苯基)咪唑(PMAPPP),然后分别与5种二酐单体聚合,经热酰亚胺化处理得到含羟基聚酰亚胺(HPI)薄膜.接着,对这些薄膜进行450℃热处理,得到相应的热重排(TR... 详细信息

合成了一种新型含四芳基咪唑结构的二胺单体4,4’-(4,5-二苯基-(3-羟基-4-氨基苯氧基)苯基)咪唑(PMAPPP),然后分别与5种二酐单体聚合,经热酰亚胺化处理得到含羟基聚酰亚胺(HPI)薄膜.接着,对这些薄膜进行450℃热处理,得到相应的热重排(TR)膜材料,并对薄膜进行了结构与性能表征.结果表明,刚性大体积四芳基咪唑结构的引入使HPI膜表现出优异的热性能和力学性能,玻璃化转变温度在263~361℃,拉伸强度在98.4~118.3 MPa.热重排后,TR膜的气体分离性能得到了显著提高.其中,TR(PMAPPP-6FDA)的气体渗透性能最佳,即H_(2)(269.31 Barrer)、CO_(2)(284.25 Barrer)、O_(2)(62.75 Barrer)和N_(2)(10.67 Barrer),CO_(2)/N_(2)和O_(2)/N_(2)的理想选择性分别为25.24和5.88,且O_(2)/N_(2)的分离性能超过2008 Robeson上限.因此,将四芳基咪唑结构引入到HPI分子结构中,可以获得一类气体分离性能优异的TR膜材料.

关键词：四芳基咪唑结构聚酰亚胺热重排气体分离膜

Shanghai hua tong Switchgear Works -A Major Switchgear Manufacturer for Power Transmission, Substation and Distribution in China

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Electricity 1996年第1期 35-37页

作者： Shao Linghua tong Switchgear Works

Founded in 1919, Shanghai hua tong Switchgear Works ("HTSW" in short for below) is one of large enterprises on state level. With high and new technology, it is designed as an export base for mechanical and electrical product of the Ministry of Machinery Industry as well. It has been awarded the honor of first grade factory in the competition for key and major project construction in Shanghai year by year,

关键词： A Major Switchgear Manufacturer for Power Transmission Shanghai hua tong Switchgear Works Substation and Distribution in China

Scientific Advances and Weather Services of the China Meteorological Administration’s National Forecasting Systems during the Beijing 2022 Winter Olympics

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Advances in Atmospheric Sciences 2024年第5期41卷 767-776页

作者： Guo DENG Xueshun SHEN Jun DU Jiandong GONG hua tong Liantang DENG Zhifang XU Jing CHEN Jian SUN Yong WANG Jiangkai HU Jianjie WANG Mingxuan CHEN Huiling YUAN Yutao ZHANG Hongqi LI Yuanzhe WANG Li GAO Li SHENG Da LI Li LI Hao WANG Ying ZHAO Yinglin LI Zhili LIU Wenhua GUO China Meteorological Administration Earth System Modeling and Prediction Centre Beijing 100081China State Key Laboratory of Severe Weather China Meteorological AdministrationBeijing 100081China Key Laboratory of Earth System Modeling and Prediction China Meteorological AdministrationBeijing 100081China National Meteorological Center China Meteorological AdministrationBeijing 100081China Environmental Modeling Center/NCEP/NWS/NOAA College ParkMD 20740USA Nanjing University of Information Science and Technology Nanjing 210044China Institute of Urban Meteorology China Meteorological AdministrationBeijing 100089China School of Atmospheric Sciences and Key Laboratory of Mesoscale Severe Weather/Ministry of Education Nanjing UniversityNanjing 210023China Tsinghua University Beijing 100084China

Since the Beijing 2022 Winter Olympics was the first Winter Olympics in history held in continental winter monsoon climate conditions across complex terrain areas,there is a deficiency of relevant research,operational techniques,and *** made providing meteorological services for this event particularly *** China Meteorological Administration(CMA)Earth System Modeling and Prediction Centre,achieved breakthroughs in research on short-and medium-term deterministic and ensemble numerical *** key technologies crucial for precise winter weather services during the Winter Olympics were developed.A comprehensive framework,known as the Operational System for High-Precision Weather Forecasting for the Winter Olympics,was *** of these advancements represent the highest level of capabilities currently available in *** meteorological service provided to the Beijing 2022 Games also exceeded previous Winter Olympic Games in both variety and *** included achievements such as the“100-meter level,minute level”downscaled spatiotemporal resolution and forecasts spanning 1 to 15 *** 30 new technologies and over 60 kinds of products that align with the requirements of the Winter Olympics Organizing Committee were developed,and many of these techniques have since been integrated into the CMA’s operational national forecasting *** accomplishments were facilitated by a dedicated weather forecasting and research initiative,in conjunction with the preexisting real-time operational forecasting systems of the *** program represents one of the five subprograms of the WMO’s high-impact weather forecasting demonstration project(SMART2022),and continues to play an important role in their Regional Association(RA)II Research Development Project(Hangzhou RDP).Therefore,the research accomplishments and meteorological service experiences from this program will be carried forward into forthcoming highimpact weather

关键词： Beijing Winter Olympic Games CMA national forecasting system data assimilation ensemble forecast bias correction and downscaling machine learning-based fusion methods

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某引水隧洞TBM水消耗统计及系统优化

建筑机械 2024年第7期 232-235页

作者：尹佟华中交第二公路工程局有限公司陕西西安710065

TBM消耗水主要用于刀盘除尘降温水、锚杆钻机冲洗水、主机皮带机冲洗水、喷混机械臂冲洗水、混凝土喷射泵冲洗水、查换刀冲洗水、2#皮带机冲洗水、清洁用水、高温排放水等。文章针对某大型隧洞使用的10余台敞开式TBM的不同给排水系统进... 详细信息

TBM消耗水主要用于刀盘除尘降温水、锚杆钻机冲洗水、主机皮带机冲洗水、喷混机械臂冲洗水、混凝土喷射泵冲洗水、查换刀冲洗水、2#皮带机冲洗水、清洁用水、高温排放水等。文章针对某大型隧洞使用的10余台敞开式TBM的不同给排水系统进行分析比较,通过对其一段时间内各系统实际用水量的统计,再加以理论分析和实际验证,从而对系统设计进行优化,对以后各引水工程的水消耗量有重要的参考意义。

关键词： TBM 给排水系统水消耗

马来西亚云顶隧道TBM整体组装与分体组装的差异化分析

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建筑机械 2024年第8期 115-119页

作者：尹佟华中交第二公路工程局有限公司陕西西安710065

马来西亚云顶隧道长16.4km,开挖洞径8.98m,采用2台敞开式TBM施工。受组装场地所限,云顶1号TBM采用整体组装、整体步进方案,云顶2号隧道TBM采用分体组装、边组装边步进的方案。文章以2种方案的大件布置、组装工艺、组装工效进行对比分析... 详细信息

马来西亚云顶隧道长16.4km,开挖洞径8.98m,采用2台敞开式TBM施工。受组装场地所限,云顶1号TBM采用整体组装、整体步进方案,云顶2号隧道TBM采用分体组装、边组装边步进的方案。文章以2种方案的大件布置、组装工艺、组装工效进行对比分析,说明2种TBM组装方式的优缺点,为后续项目提供借鉴。

关键词： TBM 整体组装分体组装组装工艺

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竹定向刨花单元加工技术研究

林产工业 2024年第8期61卷 52-58页

作者：沈周杨兴武魏任重芦童陆铜华千年舟新材科技集团股份有限公司浙江杭州310000 杭州海美自动化设备有限公司浙江杭州310000

我国竹材资源丰富,竹材定向刨花板作为一种绿色高强的生态建材,一直未能被大范围推广。这主要由原料加工的产能较低、产品质量不稳定、加工设备不成熟等因素导致。本文分析了竹材定向刨花板产业化的困境,并通过对原料加工技术的探讨提... 详细信息

我国竹材资源丰富,竹材定向刨花板作为一种绿色高强的生态建材,一直未能被大范围推广。这主要由原料加工的产能较低、产品质量不稳定、加工设备不成熟等因素导致。本文分析了竹材定向刨花板产业化的困境,并通过对原料加工技术的探讨提出了竹刨花加工的技术难点,并提供了一种径向弦切定厚技术及设备,可有效解决产品原料加工效率低、产品质量差的问题。此外,对竹定向刨花板现存的制备问题及行业发展等进行了总结与展望。

关键词：竹材定向刨花板竹刨花原料资源径向弦切定厚技术加工技术