软枣猕猴桃研究进展

软枣猕猴桃属多年生藤本落叶植物,果实甘甜多汁,富含VC,深受消费者喜爱。本文对国内外软枣猕猴桃新品种选育与繁殖、生物学特性与栽培、果实特点与贮藏加工等方面的研究进展进行了综述,以期为软枣猕猴桃产业相关研究提供借鉴。

DETECTION ON MICRO-DOPPLER EFFECT BASED ON LASER COHERENT RADAR

A laser coherent detection system of 1550 nm wavelength was presented, and experimental research on detecting micro-Doppler effect in a dynamic target was developed. In the study, the return signal in the time domain is decomposed into a set of components in different wavelet scales by multi-resolution wavelet analysis, and the components are associated with the vibrational motions in a target. Then micro-Doppler signatures are extracted by applying the reconstruction. During the course of the final data processing frequency analysis and time-frequency analysis are applied to analyze the vibrational signals and estimate the motion parameters successfully. The experimental results indicate that the system can effectively detect micro-Doppler information in a moving target, and the tiny vibrational signatures also can be acquired effectively by wavelet multi-resolution analysis and time-frequency analysis.

纺织品染色用天然染料的抗紫外性能研究进展

对天然染料的分类进行了简述,综述了具有抗紫外性能的天然染料在纺织品染色中的应用,展望了抗紫外性能天然染料未来的发展方向。

自体肋软骨鼻成形术并发症的预防及处理

目的探讨中国人自体肋软骨鼻成形术并发症的防治。方法收集2010年1月至2017年8月,中南大学湘雅二医院烧伤整形外科209例行自体肋软骨鼻成形术患者资料进行分析,其中14例患者出现并发症(6.7%)。结果195例患者表示术后效果满意,未出现并发症。术后出现并发症者14例。其中软骨变形12例,占5.7%,其中4例认为变形在可接受范围内,未行修复手术;8例再次雕刻修复术后无明显软骨弯曲。软骨明显吸收3例,其中2例合并软骨变形,1例合并感染,占1.4%,均未接受修复手术。感染合并软骨吸收1例,占0.5%,经保守治疗感染控制好转,软骨未取出。胸部瘢痕增生1例,占0.5%。结论通过选择肋软骨平直部分,保留髓质,对称雕刻法与交叉横切法等措施可明显减少软骨变形。术中严格无菌及精细操作可减少感染、气胸及瘢痕增生等并发症。