一种基于嵌入式Linux的视频采集系统

介绍了以S3C2440A为处理器,Micro2440开发板为硬件平台,开发基于嵌入式Linux2.6.32.2操作系统的视频采集系统。该系统以USB摄像头为视频获取工具,通过V4L2编程接口实现摄像头捕获视频数据。实际运行表明,该视频采集系统画面显示稳定流畅、实时性好。     

Polymer complexation for functional fibers

Polymer complex is a polymer association of different polymers with good miscibility resulting from the relatively strong intermolecular interactions or stereo match effect between polymer chains. Polymer complexes have been utilized in various fields, such as food, biomedical, cosmetic, and pharmacy. Fiber is one of the most important material forms, and shaping polymer complex into fiber will further extend its applications. This review briefly introduces the fundamentals of polymer complex, and then demonstrates the main approaches to produce polymer complex fibers(PCFs). Followed by, the modification of fibers with polymer complexes is presented. Finally, the applications of PCFs and the polymer complex modified fibers are provided, and the prospect of polymer complexation for fibers is discussed properly.     

Transparent Sr0.84Lu0.16F2.16: Yb3+, Er3+ glass ceramics: Elaboration,structure, up-conversion properties and applications

The development of optical temperature sensors is of fundamental and industrial importance for various applications. Despite the great advance in optical temperature-sensing techniques, challenges remain to search for novel sensing materials with low cost, easy fabrication and high sensitivity. Here, transparent glass ceramics (GC) embedded with cubic Sr_0.84Lu_0.16F_2.16:Yb³⁺/Er³⁺ nano-crystals were prepared via thermal annealing on the parent glass. The optical and structural properties were investigated. The enhanced emission intensity, obvious Stark splitting and prolonged lifetimes of Er³⁺ confirm the enrichment of Er³⁺ ions into formed Sr_0.84Lu_0.16F_2.16 nano-crystals. The temperature sensing performance of Yb³⁺/Er³⁺ ions in Sr_0.84Lu_0.16F_2.16GC were investigated based on up-conversion intensity ratio (FIR) from thermally coupled emitting states of Er³⁺. High energy difference ($\Delta E$?=?839?cm^?1) and high absolute sensitivity (27.4?×?10^?4?K^?1 at 606?K) are obtained. Our results reveal Sr_0.84Lu_0.16F_2.16GC are excellent host for rare earth ions doping and potential candidate for optical thermometry.     

HMLS涤纶纤维及浸胶帘子布的应用特性

介绍了高模低缩（HMLS）涤纶纤维及其浸胶帘子布的性能,与普通涤纶相比,具有模量高、干热收缩率低、尺寸稳定性好等特点,适用于子午线轮胎的生产.     

FH-98型催化剂在焦化汽油加氢精制中的应用

对FH-98型催化剂在中石油克拉玛依石化有限责任公司45×10~4 t/a焦化汽油加氢装置上不同工况的工业应用及催化剂实现长周期运行的优化措施进行了分析总结。结合行业同类装置催化剂运行情况进行对比,阐述了FH-98催化剂在焦化汽油加氢精制装置上实现较长周期运转的过程,拓宽了FH-98催化剂的应用范围及汽油加氢精制装置的催化剂选择,对同类装置具有一定的借鉴意义。