摘要：The influence of the period of rotation on the effectiveness of the thermophotovoltaic （TPV） rotary regenerator was theoretically and experimentally investi- gated. It was found that the deviations of the theoretical results from the experimental ones decrease with the increase of the period of rotation. To the TPV system of 10 kW combustion power, the deviation is 3.5% when the rotation period is 3 s; while the deviation decreases to 1.5% when the rotation period increases to 15 s. The deviation could be mainly attributed to the cold and hot fluids carryover loss which was not considered in the model. With a new model taking account of the carryover loss established, the predicted results were greatly improved. Based on the modified model, the influence of geometrical parameters of rotary regenerator on the effectiveness was analyzed for TPV systems of various combustion power. The results demonstrate that the effectiveness increases with the increase of the rotary regenerator diameter and height, while fluid carryover loss increases at the same time, which weakens the impact of geometrical parameters.

摘要：酶的分子改造和重新设计是解决酶催化工业应用瓶颈的重要途径。基于融合蛋白设计的融合酶技术是分子酶工程的一个研究热点,已逐渐应用于多功能酶和酶靠近效应的构建与控制研究中,显示出重要的理论和应用研究价值。文中对近年来融合酶的分子设计策略和应用研究的进展进行了综述。首先介绍了融合酶的概念和特点,并对最近研究中出现的融合酶构建策略进行了归纳总结,重点阐述了不同种类连接肽对融合酶的影响及其可能机理。同时,对目前融合酶的应用研究进行了归纳和讨论。最后,结合本实验室的研究,指出了融合酶领域的关键问题并对其发展方向进行了探讨和展望。

摘要：为提升搅拌过程中混合效率,提出一种错位穿流桨并基于计算流体动力学(CFD)建立其流场模型。研究错位穿流桨安装位置和穿孔对流场的影响,对比不同工况下流场变化,明确错位穿流桨工况;探究错位穿流桨上穿孔分布与功率的相互关系,通过多元线性回归分析确定穿孔位置;以混合效率作为桨叶混合能力的评价指标,分析错位穿流桨、错位桨和Rushton桨的混合效率,发现错位穿流桨有着较强的混合能力。结果表明:错位穿流桨结构简单,功率消耗低,能够减少混合时间,穿孔均匀分布在桨叶上,有效发挥穿流效果,混合效率相较于Rushton桨提升32%,研究结果可为反应器设计提供一种更高效节能的搅拌器选择。

摘要：Due to a worldwide focus on sustainable materials for human health and economy services, more and more natural renewable biomass are regarded as promising materials that could replace synthetic polymers and reduce global dependence on petroleum resources. Cellulose is known as the most abundant renewable polymer in nature, varieties of cellulose-based products have been developed and have gained growing interest in recent years. In this review, a kind of water-soluble cellulose derivative, i.e., sodium cellulose sulfate (NaCS) is introduced. Details about NaCS's physicochemical properties like solubility, biocompatibility, biodegradability, degree of substitution, etc. are systematically elaborated. And promising applications of NaCS used as biomaterials for microcarriers' designing, such as microcell- carriers, micro-drug-carriers, etc., are presented.

摘要：研究的是石墨烯增强尼龙复合材料（Graphene—PA6）如何合理应用于熔融沉积制造（FDM）3D打印技术。通过熔融共混法制备了该复合材料，并设计了正交实验，对该材料的FDM工艺进行了详细研究，得出以下结论：基于Graphene-PA6材料，当设置FDM工艺参数喷嘴温度245℃，底板温度60—70℃，打印速度27mm／s，喷嘴直径0．4mm．层厚0．20mm时，该复合材料的FDM工艺效果最好。对于制品力学性能结果值的影响程度由大到小分别是石墨烯含量、喷嘴温度、打印速度和底板温度。当石墨烯质量分数为0．05％时，用上述FDM工艺参数所打印出的成型件力学性能最佳。

摘要：通过在CBR船舶避碰决策系统检索过程中引入ART1神经网络聚类模型,设计CBR系统″子库索引+ART1聚类″的二级检索机制,可以控制检索获得的相似案例集案例数量,提高系统的运行效率。

摘要：Recently,the Palace Museum in Taipei unveiled the"thou art understood"(literally"I,the Emperor,understood your request!")paper tape,an item based on the comments that Emperor Kangxi frequently marked in palace *** tape is very popular in Taiwan as well as the China's Mainland and sells so good that the museum had to post a notice in its online store,saying 500 boxes of paper tape that were ready to sell on July 4th were sold out the next *** 700 boxes restocked on July 6th were sold out in 30 *** the release of the paper tape on July 3rd to the end of August,21,672 paper tapes were sold out.

摘要：浮式检修门的沉浮量是浮门沉浮作业的重要采集数据。基于拉绳式开度仪和三峡船闸浮门沉浮作业环境,设计了一种浮式检修门沉浮量检测装置。对装置的需求分析、硬件设计、安装设计进行了详细介绍,以期为同行业研究者提供参考。

摘要：康定斯基对法国新现象学代表人物米歇尔·亨利的艺术观产生了较大影响。亨利曾将康定斯基抽象画和艺术理论中的抽象主义艺术精神、内在需要原则以及未来艺术展望,全部纳入生命现象学视域进行了一次重新解读,从而形成了当今法国以亨利为代表的生命现象艺术观,并由此将康定斯基“内在需要原则”进行了一次现象学提升。

摘要：润滑油在汽轮机运行过程中扮演重要角色,介电常数是监测润滑油质量的重要指标。实时监测润滑油的介电常数可以了解润滑油中的水分含量和污染程度,从而确保汽轮机在最佳状态下持续高效运转。以某电厂汽轮机润滑油为研究对象,设计了一种基于Transformer的润滑油介电常数预测模型。首先对汽轮机的润滑油数据进行标准化和归一化预处理;其次基于处理后的数据构建预测模型,并进行训练和评估;最后使用优化后的模型预测润滑油介电常数。实验结果显示,基于Transfomrer的预测模型在精度上高达91.61%。进一步分析表明,该模型在预测误差方面,相较于LSTM、RNN和CNN模型,具有显著的优势,在平均绝对误差(Mean Absolute Error,MAE)、均方误差(Mean Squared Error,MSE)和均方根误差(Root Mean Squared Error,RMSE)3个关键指标上,Transformer模型分别降低了24%、28%、49%,37%、39%、71%,以及20%、22%、46%。