摘要：A good strategy was brought forward for designing efficient haptens and complete antigens for 3-amino-2-oxazolidinone （AOZ）. Haptens designed newly were achieved facilely in good yield by using LiCI-N（Et）3 as new catalysis system, the structure of which was elucidated by spectroscopy analysis, such as NMR and MS. Novel antigens for AOZ were prepared successfully by convenient active ester method. The ratios of haptens 3 and 4 to carrier proteins were proven respectively as 41 ： 1 （5a）, 39：1 （6a）, 11：1 （5b） and 9：1 （6b） by trinitrobenzene sulfonic acid （TNBS） method. The results of indirect competitive ELISA （ic-ELISA） of antiserums indicated that the haptens with a short unsaturated side chain can evoke specific immune response effectively.

摘要：　对于已设计投运的低压省煤器系统(LPES),存在一个使整个回热加热系统达到最高经济性的LPES通水流量。本文以某电厂137MW发电机组LPES为典型,全面分析了LPES系统的变流量特性,导出系统参数及等效焓降变化的计算关系式,并进而建立了确定LPES最佳流量的数学模型。经试验验证,本模型可用于指导低压省煤器的最优运行。

摘要：野外蝙蝠检测对于生态保护和科学研究具有重要意义。针对计算资源有限和复杂野外环境带来的挑战,提出了一种轻量型蝙蝠检测模型(LiteDETR-Bat),旨在实现高效的实时检测。首先为了解决特征映射冗余问题,引入重参数卷积高效层聚合网络(RCELAN)替换传统的ResNet主干网络,采用多分支特征聚合机制,有效降低了计算复杂度和参数量。其次设计了动态采样多尺度特征融合(DS-MFF),该结构集成空洞卷积和动态采样算子,通过扩大感受野并自适应调整采样位置,优化多尺度特征融合,提升多样化特征处理时模型的灵活性和鲁棒性。最后在安徽省野外环境下采集了一个涵盖多种光照条件、视角变化及蝙蝠形态变化的蝙蝠数据集,并进行了模型性能等相关实验。实验结果表明,该LiteDETR-Bat模型不仅能够使参数量降低了46.5%,mAP达到97.2%,同时在准确性和实时性上相比于YOLO系列算法均取得了一定地提升。LiteDETR-Bat模型为野外蝙蝠的监测与保护工作提供了有力的技术支持,展现了其在生态监测和生物多样性保护中的应用潜力。

摘要：A nanosecond response waveguide electro-optic （EO） switch based on ultraviolet （UV） sensitive polymers of Norland optical adhesive （NOA73） and Dispersed Red 1 （DR1） doped SU-8 （DR1/SU-8） is designed and fabricated. The absorption properties, refractive indexes, and surface morphologies of NOA73 film are characterized. The single-mode transmission condition is computed by the effective index method, and the percentage of optical field distributed in EO layer is optimized to be 93.78 %. By means of spin-coating, thermal evaporation, photolithography, and inductively coupled plasma etching, a Mach-Zehnder inverted-rib waveguide EO switch with micro-strip line electrode is fabricated on a silicon substrate. Scanning electron microscope characterization proves the physic-chemical compatibility between NOA73 cladding and DR1/SU-8 core material. The optical transmission loss of the fabricated switch is measured to be 2.5 dB/cm. The rise time and fall time of switching are 3.199 ns and 2.559 ns, respectively. These results indicate that the inverted-rib wave- guide based on UV-curable polymers can effectively reduce the optical transmission loss and improve the time response performance of an EO switch.

摘要：We report on two strategies to design and implement the galvanometer-based laser-scanning mechanisms for the realization of reflectance confocal microscopy(RCM) and stimulated Raman scattering(SRS) microscopy systems. The RCM system uses a resonant galvanometer scanner driven by a home-built field-programmable gate array circuit with a novel dual-trigger mode and a home-built high-speed data acquisition card. The SRS system uses linear galvanometers with commercially available modules. We demonstrate video-rate high-resolution imaging at 11 frames per second of in vivo human skin with the RCM system and label-free biomolecular imaging of cancer cells with the SRS system. A comparison of the two strategies for controlling galvanometer scanners provides scientific and technical reference for future design and commercialization of various laser-scanning microscopes using galvanometers.

摘要：对汽车人机交互界面层级进行定义、分析和研究。以奔驰Cover Flow交互系统为试验对象,研究和改进其交互界面层级关系,搭建了可操作的硬件环境进行试验,基于眼动追踪的方法对改进后的设计方案进行眼动扫视路径和热点图分析,提出层级设计原则,为驾驶安全设计提供参考。

摘要：Personalized microblog recommendations face challenges of user cold-start problems and the interest evolution of topics. In this paper, we propose a collaborative filtering recommendation algorithm based on a temporal interest evolution model and social tag prediction. Three matrices are first prepared to model the relationship between users, tags, and microblogs. Then the scores of the tags for each microblog are optimized according to the interest evolution model of tags. In addition, to address the user cold-start problem, a social tag prediction algorithm based on community discovery and maximum tag voting is designed to extract candidate tags for users. Finally, the joint probability of a tag for each user is calculated by integrating the Bayes probability on the set of candidate tags, and the top n microblogs with the highest joint probabilities are recommended to the user. Experiments using datasets from the microblog of Sina Weibo showed that our algorithm achieved good recall and precision in terms of both overall and temporal performances. A questionnaire survey proved user satisfaction with recommendation results when the cold-start problem occurred.

摘要：Conical picks are important tools for rock mechanical *** cutting force(MCF)of conical pick determines the suitability of the target rock for mechanical *** evaluation of MCF is important for pick design and rock *** study proposed hybrid methods composed of boosting trees and Bayesian optimization(BO)for accurate evaluation of MCF.220 datasets including uniaxial compression strength,tensile strength,tip angle(θ),attack angle,and cutting depth,were *** boosting trees were developed based on the database to predict *** optimized the hyper-parameters of these boosting *** evaluation suggested that the proposed hybrid models outperformed many commonly utilized machine learning *** hybrid model composed of BO and categorical boosting(BO-CatBoost)was the *** outstanding performance was attributed to its advantages in dealing with categorical features(θincluded 6 types of angles and could be considered as categorical features).A graphical user interface was developed to facilitate the application of BO-CatBoost for the estimation of ***,the influences of the input parameters on the model and their relationship with MCF were ***θincreased from 80°to 90°,it had a significant contribution to the increase of MCF.

摘要：采用完全随机设计,解析不同牧草种类(老芒麦、扁穗冰草、垂穗披碱草和紫花苜蓿)、补播量(0、12.54、16.72和20.90 kg/hm^(2))和施肥量(0、53.73、107.46和161.49 kg/hm^(2)干牛粪)对退化草地牧草营养品质和产量的影响,旨在明确退化草地牧草高产优产的最适管理方式。结果表明:不同管理方式显著改变了牧草干物质、粗蛋白、中性洗涤纤维、酸性洗涤纤维、有机物、粗脂肪和总能(P<0.05)。退化草地补播豆科植物紫花苜蓿的牧草干草产量及各营养物质产量均显著高于补播禾本科牧草(P<0.05)。随着补播量和施肥量的增加,牧草的干草产量以及各营养物质产量均有显著提高(P<0.05)。退化草地补播紫花苜蓿(补播量20.90 kg/hm^(2)),且施53.73 kg/hm^(2)干牛粪时,地上混合牧草的综合营养价值最高。

摘要：文章通过对青岛电影博物馆方案设计理念的介绍,在这一主题性博物馆的设计中致力于将海洋文化、视听艺术与开放性理念进行融合,从城市坐标、空间体验、形象塑造三个方面解读了观众与建筑、建筑与电影文化融洽共生的创作特点。