AUTOCONER-338型自动络筒机的接头工艺与切疵有效性分析

介绍了AUTOCONER-338型自动络筒机空气捻接器的接头要求与影响接头质量的因素,并且就不同品种的纱线选用不同接头工艺进行了简单分析;介绍了如何评价络筒切疵有效性与影响切疵率的因素.通过以上2方面的分析介绍,及时调整设计与工艺,提高了生产效率,改善了布面质量.     

带肋钢筋套筒挤压连接的质量控制

针对太原可口可乐综合厂房主筋采用φ28、φ32三级钢存在的可焊性差的问题，提出了在施工中采用套筒挤压连接的方式，并对该方法的操作要点及质量控制措施进行了总结。     

Antisense Oligonucleotide-Based Rescue of Aberrant Splicing Defects Caused by 15 Pathogenic Variants in ABCA4

The discovery of novel intronic variants in the ABCA4 locus has contributed significantly to solving the missing heritability in Stargardt disease (STGD1). The increasing number of variants affecting pre-mRNA splicing makes ABCA4 a suitable candidate for antisense oligonucleotide (AON)-based splicing modulation therapies. In this study, AON-based splicing modulation was assessed for 15 recently described intronic variants (three near-exon and 12 deep-intronic variants). In total, 26 AONs were designed and tested in vitro using a midigene-based splice system. Overall, partial or complete splicing correction was observed for two variants causing exon elongation and all variants causing pseudoexon inclusion. Together, our results confirm the high potential of AONs for the development of future RNA therapies to correct splicing defects causing STGD1.     

15～60°钢丝帘布裁断机的性能及特点

介绍了15~60°钢丝帘布裁断机的几个主要机构,导开、输送、拼接、纵向切割、包边等的特点,列举了整机的主要技术参数,以说明该设备的先进性。     

钢筋套筒灌浆连接技术有限元分析

对于预制装配混凝土结构关键技术之一的钢筋套筒灌浆连接技术,已进行了不少试验研究,但试验不确定因素较多,离散性大.为研究这种连接在各种作用下的受力性能,拓展模型试验研究的成果,有必要建立可靠正确的有限元模型.本文在已有试验的基础上,采用ABAQUS软件,模拟钢筋套筒灌浆连接的受力性能.数值模拟结果与试验吻合良好,说明所建立的有限元模型正确,可以用于进一步参数分析和机理研究.     

基于超像素和光流引导的正射影像拼接方法

影像拼接是生成大规模数字正射影像的关键技术之一,但现有的影像拼接方法在进行多个影像拼接时存在拼接线穿过明显地物导致的鬼影现象。光流是观察者和场景间相对运动引起的影像边缘等的相对运动,其中,大光流对应影像间的变化区域,可用于检测正射影像间的明显地面区域。提出一种基于光流引导的新型影像拼接方法,通过超像素的密集光流提取影像中明显的地物信息,以避免接缝穿过明显的地面物体。采用由粗到细的接缝线优化策略,并在超像素级别上利用Dijkstra算法进行最佳拼接区域检测,从而提高接缝线检测的效率。在此基础上,结合归一化互相关成本函数在像素级别上进行拼接线的像素级优化,获得最优的接缝线。实验结果表明,该方法从主观视觉上能够生成高质量的接缝线,在保证拼接效率的情况下,SSIM质量评价指标较Dijkstra方法、图割方法以及商业软件OrthoVista得到明显提高。     

光子晶体与单模光纤熔接对超连续谱展宽的影响

针对光子晶体光纤之间直接熔接损耗较大的问题.文中采用纳秒激光器作为泵浦源,通过光子晶体光纤与单模光纤HI-1060低损耗熔接的方法,研究了超连续谱的展宽过程,分析了超连续谱的产生机理.实验结果表明：泵浦源在重复频率为150kHz、泵浦功率为2.2W时,利用20m的光子晶体光纤与1m的单模光纤的熔接实现了输出功率为0.48W、光谱范围超过1100nm的超连续谱输出.     

Matrix splicing system

The string splicing system was introduced by Tom Head, which stands as an abstract model for the DNA recombination under the influence of restriction enzymes and ligase enzymes. However, it is observed that strings are not very capable of modelling the complex chemical process. Hence, in this article, matrix splicing system is introduced with a new splicing operation among the matrices. It is shown with an illustration that the DNA recombination process can be simulated by the matrix splicing system, which justifies the suitability of the matrices for modelling the complex processes of the molecules. The properties of the components of the system such as cutting rules and the splicing rules are discussed. Besides some properties of the system, it is shown that this system stands as a theoretical model for splicing strings in parallel. The abstraction of the ligase enzymes is explained which is missing in all the splicing models that have come out so far. The ability of the system in generating new patterns is also outlined.     

马钢110t电炉工程特大型钢吊车梁制造工艺与质量控制

马钢110t电炉工程中的22根特大型钢吊车梁制作是马鞍山地区迄今为止最大的钢吊车梁,其体重外形尺寸庞大、工艺复杂、质量要求高,制作难度性不言而喻。施工中结合以往成功经验、作法对此吊车梁的制作工艺及质量控制,认真进行研究分析并釆取相应的对策,从而为其成功实施起到关键性作用。     

树状柱框架中钢梁拼接的抗震设计有限元模拟对比

为了比较树状柱钢框架中各种钢梁拼接设计的抗震性能,对几种常用的拼接设计进行了有限元滞回性能的模拟对比分析。分析采用三维三重非线性有限元,完全考虑了螺栓预拉力、螺栓头(帽)与板的相互作用、螺栓杆与孔壁的相互挤压作用、接触面的摩擦作用。结果表明,按照拼接区的实际受力进行设计,不仅拼接用料和施工用时较少,而且抗震性能有所提高。