摘要：The microstructure, wettability and chemical composition of the butterfly wing surfaces were investigated by a scanning electron microscope, a contact angle meter and a Fourier transform infrared spectrometer. The micro/nano structural models for hydrophobicity of the butterfly wing surfaces were established on the basis of the Cassie equation. The hydrophobicity mechanisms were discussed from the perspective of biological coupling. The butterfly wing surfaces are composed of naturally hydrophobic material and possess micro/nano hierarchical structures, including primary structure （micrometric scales）, secondary structure （nano longitudinal ridges and lateral bridges） and tertiary structure （nano stripes）. The wing surfaces exhibit high hydrophobicity （contact angle 138°-157°） and low adhesion （sliding angle 1°-3°）. The micromorphology and self-cleaning performance of the wing surfaces demonstrate remarkable anisotropism. The special complex wettability ascribes to a coupling effect of the material element and the structure element. In microdimension, the smaller the width and the bigger the spacing of the scale, the stronger the hydrophobicity of the wing surfaces. In nano-dimension, the smaller the height and the smaller the width and the bigger the spacing of the longitudinal ridge, the stronger the hydrophobicity of the wing surfaces. This work promotes our understanding of the hydrophobicity mechanism of bio-surfaces and may bring inspiration for biomimetic design and preparation of smart interfacial materials.

摘要：12世纪早期的宋室南渡,是宋代历史上的重大转变。宋室南渡后,无论社会文化还是诗歌艺术,在继承北宋的同时又发生了显著变化,尤其是宋孝宗至宋宁宗前期约半个世纪,诗歌创作出现中兴,成为继唐代开元、元和及北宋元祐之后的又一诗学高峰,史称“南宋中兴诗坛”。南宋诗歌的中兴,是宋代文学史乃至整个中国文学史上的重要议题。

摘要：近年来国际毒贩通过边界和旅游渗透我国。云南省边境已发现少数麻醉品依赖患者。为此,我们在云南德宏州某医院对65例麻醉品依赖患者进行了住院治疗。采用自行设计的〈药物依赖性研究用表〉观察,现将临床总结如下。

摘要：本文介绍了轨道车辆快速加工设计系统开发方案及实际应用情况。该系统是通过重点分析轨道车辆零部件的结构形式和加工特点,遵循参数化设计理念,在Pro/ENGINEER软件基础上通过二次程序开发建立起来的。轨道车辆快速加工设计系统实现了零部件三维模型加工特征的快速设计,有效缩短了产品研发周期,增强了企业的市场反应能力。

摘要：随着我国科学技术的飞速发展,轨道车辆产品的复杂程度迅速提高,在其研制、设计、生产、使用、维修和保养等全寿命周期的各个阶段需传递和使用大量的技术资料,传统纸质技术资料的使用和管理模式存在着耗时、费力,时效性差等缺陷,已不能满足现代设备后勤保障的需求。因此,建立基于IETM的技术先进、结构开放且适应当前轨道车辆后勤保障要求的应用工程结构体系,对缩短维修时间,提高轨道车辆保障效率具有重要意义。