摘要：Semiconductor oxides are widely used to achieve photocatalytic removal of NOx(NO and NO2) species. These materials also exhibit enhanced oxidation ability in thermally assisted photocatalysis;however, many of them tend to be deactivated at high relative humidity(RH) levels. In the case of the benchmark P25 TiO2 photocatalyst, we observe a significant decrease in non-NO2 selectivity from 95.02% to 58.33% when RH increases from 20% to 80%. Interestingly, the porous TiO2(B) microspheres synthesized in this work exhibit 99% selectivity at 20% RH;the selectivity remains as high as 96.18% at 80% RH. The high humidity tolerance of the TiO2(B) sample can be ascribed to its strong water desorption capacity and easy O2 adsorption at elevated temperatures, which reflects the fact that the superoxide radical is the main active species for the deep oxidation of NOx. This work may inspire the design of efficient photothermal catalysts with application in NOx removal in hot and humid environments.

摘要：Bio-nanochannels in living organisms participate in the physiological activities by selectively transporting ions through cell *** structure and function of biological ion channels inspire the development of artificial ion nanochannels with practical *** bioinspired nanochannels based on polymer materials present good mechanical stability,high-performance ion transport and designability,which have attracted much *** this review,we mainly focus on the fabrication and application of polymer-based biomimetic nanochannels especially in environmentally responsive biosensor and energy *** firstly introduce the basic understanding of nanochannels in ion regulation and osmotic energy ***,we discuss the fabrication methods of polymer-based nanochannels and highlight their advantages compared with other *** practical applications of polymer-based biomimetic nanochannels,especially in energy conversion and environmentally responsive biosensor,are detailedly ***,we summarize the unsolved problems in bioinspired nanochannels and overview the further developing direction in this field.

摘要：以实践教学体系为基础,依托实践教学基地,采用“两面向三结合”的教学模式,并贯通式地融入课程思政元素。“两面向三结合”是指面向创新创业素质培养,在理论培训中将技术原理与企业运营知识相结合;在实践过程中将车间实习和项目研究相结合;在实习中将理论培训与实践过程相结合。教学实践表明,该实习教学方法有利于增强学生的动手能力,提高学生的创新能力,强化学生的创业意识,培养学生的职业精神,达到了预期效果。

摘要：本文研究了金融科技对沪深300股指期货流动性的影响,基于2017—2022年沪深300股指期货的交易数据,通过分位数回归方法分析并得到以下结论:金融科技能够显著影响股指期货市场的流动性水平;金融科技对期货市场流动性的影响是动态变化的,并且可能由于效果和时间层面的不同而产生变化。

摘要：自2021年在水电工程爆破开挖中强制推行应用数码电子雷管后,关于数码电子雷管的爆破联网设计方案、实际消耗量、成本分析等研究尚处于空白阶段。笔者从数码电子雷管与非电毫秒雷管爆破联网设计方案对比分析入手,研究两者的爆破联网方式差异,理论推导两者耗量调整系数。同时采用无约束支持向量机模型构建雷管耗量与岩石级别、开挖断面的函数关系,计算数码电子雷管替换非电毫秒雷管后的耗量调整系数,并采用单一变量试验验证计算数据的准确性。结果表明,实测数据结果与理论推导结果、数学模型分析结果保持一致,证明两种研究方法的可靠性。

摘要：应国家政策要求,除工业数码电子雷管外的其他工业雷管全面停止销售。现行水电建筑工程概算定额、预算定额使用的爆破材料均为电雷管、非电毫秒数码雷管。本文通过分析爆破设计方案和起爆设计网路,确定两种雷管耗量差异的本质原因,利用项目实测数据统计分析在相同的爆破设计方案条件下数码电子雷管与非电毫秒雷管耗量差异,并采用支持向量机通过大数据分析方法得出应用数码电子雷管替换非电毫秒雷管的消耗量调整系数。

摘要：化学实验赛有助于培养学生的综合素质和创新能力,促进实验课程体系和教学内容的改革以及实验教学质量的提高。本文提出教学—竞赛——改革的持续循环,将多层次化学实验赛(1.技能赛、2.设计赛、3.兴趣赛)与基础化学实验教学深度融合。以赛(技能赛)促学,以赛(设计赛、兴趣赛)促改,通过比赛促进了学生对基本操作的重视和实验知识学习的热情;达成了学生自主架构实验内容和理论知识联系的目标。对于创新思维的启蒙和高水平化学本科人才的培养,具有积极的引导作用。

摘要：Al is considered as a promising lithium-ion battery(LIBs)anode materials owing to its high theoretical capacity and appropri-ate lithation/de-lithation ***,its inevitable volume expansion causes the electrode structure instability,leading to poor cyclic ***’s worse,the natural Al2O3 layer on commercial Al pellets is always existed as a robust insulating barrier for elec-trons,which brings the voltage dip and results in low reversible ***,this work synthesized core-shell Al@C-Sn pellets for LIBs by a plus-minus *** this proposal,the natural Al2O3 passivation layer is eliminated when annealing the pre-introduced SnCl2,meanwhile,polydopamine-derived carbon is introduced as dual functional shell to liberate the fresh Al core from re-oxidization and alle-viate the volume *** from the addition of C-Sn shell and the elimination of the Al2O3 passivation layer,the as-prepared Al@C-Sn pellet electrode exhibits little voltage dip and delivers a reversible capacity of 1018.7 mah·g^(-1) at 0.1 A·g^(-1) and 295.0 mah·g^(-1) at 2.0 A·g^(-1)(after 1000 cycles),***,its diffusion-controlled capacity is muchly improved compared to those of its counterparts,confirming the well-designed nanostructure contributes to the rapid Li-ion diffusion and further enhances the lithium storage activity.

摘要：为明确近年来抽水蓄能电站投资水平增长的主要影响因素及作用程度,选取四组抽水蓄能电站为样本,从费率标准因素、物价变化因素、工程量差异因素三方面分析抽水蓄能电站投资增长情况,并构建云模型测度各项目构成对抽水蓄能电站整体投资增长的作用程度及作用等级。研究结果对加强抽水蓄能电站投资管控具有一定的参考价值。

摘要：基于国外低易损固体推进剂研究,对低易损性概念、低易损固体火箭发动机关键技术现状,以及低易损性试验标准、缩比试验方法、仿真模拟等进行了综述分析。对国内低易损技术理论研究需完善的问题,从数值模拟仿真、新型低易损推进剂研制、固体火箭发动机设计技术、低易损试验表征技术及相关评价等方面提出了技术建议。