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NO removal performance of CO in carbonation stage of calcium looping for CO_(2) capture

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Chinese Journal of Chemical Engineering 2021年第9期34卷 30-38页

作者： Wan Zhang Yingjie li Yuqi Qian boyu li Jianli Zhao Zeyan Wang School of Energy and Power Engineering Shandong UniversityJinan 250061China State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100China

Calcium looping realizes CO_(2)capture via the cyclic calcination/carbonation of *** combustion of fuel supplies energy for the *** is unavoidable that some unburned char in the calciner flows into the carbonator,generating CO due to the hypoxic atmosphere in the *** can reduce NO in the flue gases from coal-fired power *** this work,NO removal performance of CO in the carbonation stage of calcium looping for CO_(2)capture was investigated in a bubbling fluidized bed *** effects of carbonation temperature,CO concentration,CO_(2)capture,type of CaO,number of CO_(2)capture cycles and presence of char on NO removal by CO in carbonation stage of calcium looping were *** possesses an efficient catalytic effect on NO removal by *** temperature and high CO concentration lead to high NO removal efficiency of CO in the presence of *** account of better NO removal and CO_(2)capture,the optimal carbonation temperature is 650℃.The carbonation of CaO reduces the catalytic activity of CaO for NO removal by CO due to the formation of CaCO_(3).Besides,the catalytic performance of CaO on NO removal by CO gradually decreases with the number of CO_(2)capture *** is because the sintering of CaO leads to the fusion of CaO grains and blockage of pores in CaO,hindering the diffusion of NO and *** high CaO content and porous structure of calcium-based sorbents are beneficial for NO removal by *** presence of char promotes NO removal by CO in the ***_(2)/NO removal efficiencies can reach above 90%.The efficient simultaneous NO and CO_(2)removal by CO and CaO in the carbonation step of the calcium looping seems promising.

关键词： Sorbents Carbon monoxide CO_(2)capture NO removal Carbonation stage Calcium looping

Tax-Scheduler:An interactive visualization system for staff shifting and scheduling at tax authorities

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Visual Informatics 2023年第2期7卷 30-40页

作者： linping Yuan boyu li Siqi li Kam Kwai Wong Rong Zhang Huamin Qu Hong Kong University of Science and Technology Hong KongChina Xi’an Jiaotong University Xi’anShaanxiChina Tianjin University of Science and Technology TianjinChina

Given a large number of applications and complex processing procedures,how to efficiently shift and schedule tax officers to provide good services to taxpayers is now receiving more attention from tax *** availability of historical application data makes it possible for tax managers to shift and schedule staff with data support,but it is unclear how to properly leverage the historical *** investigate the problem,this study adopts a user-centered design *** first collect user requirements by conducting interviews with tax managers and characterize their requirements of shifting and scheduling into time series prediction and resource scheduling ***,we propose Tax-Scheduler,an interactive visualization system with a time-series prediction algorithm and genetic algorithm to support staff shifting and scheduling in the tax *** evaluate the effectiveness of the system and understand how non-technical tax managers react to the system with advanced algorithms and visualizations,we conduct user interviews with tax managers and distill several implications for future system design.

关键词： Staff scheduling Tax service Genetic algorithm Time series prediction

Visualizing extended defects at the atomic level in a Bi_(2)Sr_(2)CaCu_(2)O8_(+σ) superconducting wire

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Chinese Physics B 2024年第9期33卷 43-47页

作者： Kejun Hu Shuai Wang boyu li Ying liu Binghui Ge Dongsheng Song Information Materials and Intelligent Sensing Laboratory of Anhui Province Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationInstitutes of Physical Science and Information TechnologyAnhui UniversityHefei 230601China

The microstructure significantly influences the superconducting ***,the defect structures and atomic arrangements in high-temperature Bi_(2)Sr_(2)CaCu_(2)O8_(+σ) superconducting wire are directly characterized via stateof-the-art scanning transmission electron *** oxygen atoms are observed in both the charge reservoir layers and grain boundaries in the doped *** phases with varied numbers of CuO_(2) layers are found,and twist interfaces with different angles are *** study provides insights into the structures of Bi-2212 wire and lays the groundwork for guiding the design of microstructures and optimizing the production methods to enhance superconducting performance.

关键词： superconductor microstructure defect scanning transmission electron microscopy

介孔蔗渣碳的氮官能化改性及其对Hg^(2+)吸附的影响

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材料研究学报 2018年第12期32卷 929-935页

作者：李坤权李博宇南京农业大学工学院南京210031

以甘蔗渣为原料、磷酸作为改性剂制备了生物质碳BAC,用硝酸氧化和乙二胺对其修饰后制备出多胺介孔蔗渣基生物质碳BAC-EDA。采用低温液氮吸附/脱附,根据BET、BJH、t-plot、FTIR分析改性前后蔗渣碳BAC、BAC-EDA的孔结构和表面化学官能团,... 详细信息

以甘蔗渣为原料、磷酸作为改性剂制备了生物质碳BAC,用硝酸氧化和乙二胺对其修饰后制备出多胺介孔蔗渣基生物质碳BAC-EDA。采用低温液氮吸附/脱附,根据BET、BJH、t-plot、FTIR分析改性前后蔗渣碳BAC、BAC-EDA的孔结构和表面化学官能团,研究了改性对重金属汞吸附的影响。结果表明,生物质碳BAC和BAC-EDA由介孔和少量微孔组成,在改性后的多胺介孔蔗渣基生物质碳表面新增了羧基、内酯基等含氧酸性官能团以及氨基含氮官能团,而且改性前后生物质碳的微介孔所占比例恒定。这些结果表明,官能团的引入是在微介孔上同时进行的。吸附试验结果表明,改性后的蔗渣碳BAC-EDA的最大吸附量为137 mg·g^(-1),远高于未改性的蔗渣碳AC的吸附量73 mg·g^(-1),说明硝酸氧化和乙二胺改性提高了生物质碳的吸附性能。使用Langmuir模型能更好地描述汞在BAC-EDA上的吸附,进一步说明改性后碳材料活性位点的均一性。同时,温度升高有利于吸附,说明这个过程是一个自发吸热过程。

关键词：复合材料氮官能化氧化缩聚乙二胺吸附

Effects of progesterone on the lipolysis of lipid droplets and prostaglandin E2 synthesis in murine cervical epithelial cells

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Effects of progesterone on the lipolysis of lipid droplets a...

中国畜牧兽医学会兽医产科学分会第八届会员代表大会暨第十五次学术研讨会

作者： Hongyan Zhang Feng Su libo Huang boyu li Xuejun Yuan Mingjiu Luo lijiang Ge

Previous studies demonstrated that progesterone(P4) can promote prostaglandin(PG) E2 production;however,how P4 mediates the synthesis of PGE2 remains *** this study,cervical epithelial cells from mice during the follicular phase were cultured in vitro and treated with different concentrations of P4(5,10,and 20 nM).The results of the present study suggest that treatment of murine cervical epithelial cells with 10 nM P4 for 24 h contributed to:(1) significantly increased expression of protein kinase A(PKA),cytosolic phospholipase A2(cPLA2) and PGE synthase(PGES)-1;(2) higher phosphorylated(p-) to total extracellular signal-regulated kinase(ERK) 1/2 and hormone-sensitive lipase(HSL) ratios;(3) a significant decrease in the number of lipid droplets(LDs) and fatty acid content within LDs in epithelial cells;and(4) enhanced arachidonic acid and PGE2 levels in cells compared with the control(0 nM P4) group(P,0.01 for all findings).In contrast,the PKA inhibitor H89 contributed to significantly decreased cPLA2,PGES-1 and HSL expression,ERK1/2 phosphorylation and arachidonic acid and PGE2 levels,even in the presence of *** data show that P4 can act via the PKA/ERK1/2 pathway to stimulate lipolysis of triacylglycerol in the LD core and degradation of phospholipid in the LD membrane to promote PGE2 synthesis in murine cervical epithelial cells.

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结合通道均衡的SAR距离DBF方法

系统工程与电子技术 2019年第3期41卷 523-528页

作者：李铂宇陈溅来孙光才邢孟道西安电子科技大学雷达信号处理国家重点实验室陕西西安710071 西安电子科技大学信息感知技术协同创新中心陕西西安710071

利用距离数字波束形成(digital beam-forming,DBF)技术可以扩展有效观测幅宽,缓解传统合成孔径雷达系统方位向高分辨与距离向宽测绘带的矛盾,而距离向各通道间的通道误差会使合成波束方向图偏离理想状态,降低系统的性能。针对该问题,提... 详细信息

利用距离数字波束形成(digital beam-forming,DBF)技术可以扩展有效观测幅宽,缓解传统合成孔径雷达系统方位向高分辨与距离向宽测绘带的矛盾,而距离向各通道间的通道误差会使合成波束方向图偏离理想状态,降低系统的性能。针对该问题,提出了结合通道均衡的DBF方法,首先简单介绍传统距离DBF处理技术的原理;然后对实际系统中通道接收信号存在的通道误差进行分析;最后根据分析结果,将通道均衡算法与传统DBF处理技术相结合。该处理方法可以有效消除通道间幅相误差,提升DBF处理效果。利用机载距离向八通道实测数据验证了算法的有效性。

关键词：合成孔径雷达数字波束形成通道间误差幅相误差通道均衡

超亲水性金属有机框架膜对油水混合物的高效分离及传质机理

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工程热物理学报 2023年第5期44卷 1390-1394页

作者：何璇婷李博宇陶文铨李卓同济大学环境科学与工程学院上海200092

化工废水大量排放和漏油、溢油事故频发对环境保护和生态平衡造成巨大的影响。本文提出了一种简单、节能、环保友好的金属有机框架膜制备方法用于油水分离。采用电化学方法在铜网上沉积金属有机框架材料获得超亲水性膜(Cu-CAT-1@铜网)... 详细信息

化工废水大量排放和漏油、溢油事故频发对环境保护和生态平衡造成巨大的影响。本文提出了一种简单、节能、环保友好的金属有机框架膜制备方法用于油水分离。采用电化学方法在铜网上沉积金属有机框架材料获得超亲水性膜(Cu-CAT-1@铜网)。在重力驱动下,Cu-CAT-1@铜网膜能快速分离各种油/水混合物,分离效率大于95.0%,水通量大于112 kL·m^(-2)·h^(-1)。其分离性能高于大部分报道的铜网基底膜,并具有良好的重复性和可回收性。该膜传质机理主要基于Cu-CAT-1的超亲水性和水下超疏油性达到高效分离含油污水。

关键词：油水分离膜金属有机框架材料超亲水/水下超疏油

Differential expression patterns and functions of IFNAR1 and IFNAR2 in co-culture model of bovine blastocysts and endometrial cells

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Differential expression patterns and functions of IFNAR1 and...

中国畜牧兽医学会兽医产科学分会第八届会员代表大会暨第十五次学术研讨会

作者： WANG Xiangguo CHEN Chaolei WANG lijuan SU Yunze li boyu NI Hemin GUO Yong Animal Science and Technology College Beijing University of Agriculture

Objective:Interferon-tau(IFNτ),a type I interferon,is an antiluteolytic factor secreted by trophoderm during the pregnancy of ***-τ transmits signals or stimulates the expressions of some factors to build maternal recognition and keep pregnancy by binding its receptors,IFNτ receptor 1(IFNAR1) and IFNτ receptor 2(IFNAR2).Up to now,the IFNτ-IFNAR cascade regulation process between the embryo and uterine epithelial cells has not been clearly *** study aimed to explore the functions of IFNAR in regulating the molecular mechanism of precise embryo-uterine ***:the technologies of in vitro fertilization,parthenogenetic activation and somatic cell nuclear transfer were used in this study to obtain these in vitro produced blastocysts and in vivo ones to compare the differences of their own IFNτ secretion and their in vitro co-culture effect with endometrial epithelial ***:In this study,we found that the expression and location of IFNτ in blastocysts from different *** addition,IFNτ,IFNAR1 and IFNAR2 are all located in the trophoblast cells of the ***,the fluorescence intensity of IFNAR1 is consistent with IFNτ.The co-culture of bovine blastocysts and their endometrial epithelial cells from different sources stimulated the expressions of IFNAR1,IFNAR2 and downstream Integrin αvβ3,WNT7 A,*** the expression of IFNAR1 and IFNAR2 in embryos and co-culture with EEC also reduced the expressions of Integrin αvβ3,WNT7 A,ISG15 in *** out IFNAR1 and IFNAR2 with CRISPER-cas9,co-cultivation with EEC found that although both can reduce the expression of Integrin αvβ3 and WNT7 A in EEC,the deletion of IFNAR2 gene has a greater impact than the deletion of IFNAR1 *** IFNAR1-/IFNAR2-co-cultured with IVF and PA embryos,the expression of Integrin αvβ3 was inhibited,while the expression of WNT7 A was not inhibited in IVF ***1-/IFNAR2+and IFNAR1/IFNAR2were co-cultured with IVF,the expression of

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“黄金之路”考辨近代以来嫩漠路的沿革

近代史研究 2022年第6期 148-157页

作者：刘文鹏李伯禹中国人民大学清史研究所

学界普遍认为“黄金之路”嫩漠路在晚清时期已被用于运输漠河金厂的黄金。实际上,晚清时期李金镛只是进行了勘测,而开通和建设驿路虽几经动议、筹备,始终未能付诸实施,并未成为运输漠河金厂黄金的驿路。民初,出于防御沙俄的战略考量,嫩... 详细信息

学界普遍认为“黄金之路”嫩漠路在晚清时期已被用于运输漠河金厂的黄金。实际上,晚清时期李金镛只是进行了勘测,而开通和建设驿路虽几经动议、筹备,始终未能付诸实施,并未成为运输漠河金厂黄金的驿路。民初,出于防御沙俄的战略考量,嫩漠路得以开通,并推动了沿途社会经济的发展。然而,由于难以维护,嫩漠路迅速衰落。直至新中国成立后,黑龙江省政府动用军事力量成功修通嫩漠公路,才将这一战略落到实处。

关键词：嫩漠路李金镛漠河金厂沙俄