非均衡市场价格调节的纯增益反馈控制问题研究

本文在弱化现有文献对非均衡微观市场所受到外干扰的限制条件下 ,具体讨论了两种非均衡微观市场价格调节的纯增益反馈控制问题 ,得出了符合经济现实的结果并给出了实例 .     

柱下钢筋混凝土十字交叉基础节点力的分配

本文给出了合理的重叠基底反力调整方法及计算公式,并通过算例对节点力调整前后基底应力及内力的变化进行了对比,     

螺旋调节式变阻器

本设计出了一个调节分辨率极高的螺旋调节变阻器。     

Comparison of Retention Indices of Some Explosives and Related Compounds Calculated by Different Mathematical Methods in Reversed-Phase Liquid Chromatography

In reversed phase liquid chromatography, the retention indices of some neutral and acidic explosives and related compounds (nitramines, nitroaromatics, aminoaromatics, and nitrophenols) based on the alkan-2-one, alkyl aryl ketone, and 1-nitroalkane retention index standards have been determined by the application of a new mathematical adaptation method, viz. a multiparametric least-squares regression iterative method. This method was applied to two types of columns. The first group includes six octadecyl-C₁₈ columns with different packing materials and obtained from different manufacturers, while the second group comprises one octyl-C₈ column. The retention indices have been extensively studied using either methanol-water or methanol-phosphate buffer mobile phase systems. The calculated multiparametric retention indices values were compared with those obtained by Guardino's, Grobler's, and Kovàts' methods. The influences of the concentration of the organic modifier in the mobile phase, aqueous mobile phase pH, and the column packing material on the retention indices of the explosives were also investigated. Good agreement was observed between the retention indices calculated by the use of the four mathematical methods for both neutral and acidic explosives.     

苏教版《化学反应原理》新旧教材的对比分析与建议

从课程标准中提出的内容要求和活动建议出发，分析苏教版《化学反应原理》新旧教材内容的调整、调整的目的或意义，发现新版教材对课程标准中的内容进一步完善，更能体现化学核心素养的要求，语言描述更加准确，更方便教师和学生使用。并对新教材编写过程中前后数据的一致性、教学中如何实施高中与大学知识的衔接、如何合理使用新教材资源及其他资源提出了一些具体的建议。     

Transitions of Collective Motions Driven by Phase Resetting

The front cover artwork is provided by Prof. Gao's group. The image shows the motion patterns transition of the active gel group under the step light intensity, which describes the mechanism of a new collective emergence structure. Read the full text of the Research Article at 10.1002/cphc.202300054 .