数控机床改造的发展概况浅析

随着技术的不断进步,数控机床改违成为了业界关注的焦点之一。本文分析了与数控机床改造发展相关的一些问题。主要介绍了数控技术与数控机床,阐述了数控机床改造的优势,最后总结了数控机床改造技术的发展趋势。     

艾灸联合盆底肌肉训练治疗前列腺剜除术后压力性尿失禁的效果评价

目的 观察艾灸联合盆底肌肉训练治疗前列腺剜除术后压力性尿失禁的临床疗效.方法 选取2017年7月至2020年6月井冈山大学附属医院80例前列腺剜除术后压力性尿失禁的患者,采用随机数字表法分为实验组40例和对照组40例,对照组采用盆底肌肉训练,实验组在对照组的基础上使用艾灸穴位治疗.比较两组患者术后尿失禁ICI-Q-SF...     

Compressive Behaviours of Concrete Cylinders Wrapped with 2- D Glass Fabrics

Concrete cylinders wrapped with glass fabrics of various constructions were fabricated. Compressive behaviours of cylinders with and without fabric wrapping were investigated. Comparisons of the compressive characters while using different fabrication parameters were made. It was demonstrated that the effect of the fabric reinforcement was obvious. The tensile strength of the filament used in the fabric played an important role as far as the anti-compression behaviour of the reinforced cylinders is concerned.     

发展武警部队集装化运输保障探讨

武警部队后勤物资运输保障多采用散装的形式,保障效率低。通过分析外军与解放军后勤物资集装化运输现状,结合执行多样化任务的实际,阐述武警部队后勤物资集装化运输的意义,最后提出发展集装化运输的构想。     

Influence of Clothing Fabrics on Skin Microcirculation

This study investigated the effects of clothing fabric on human skin microcirculation.Once skin is covered with a clothing fabric,human sensations,namely,coolness,warmth,softness,and roughness,are aroused immediately,and the cutaneous microcirculation may be changed consequently.Since the complex relationships of the human skin,the environment,and the clothing,there is few publication focusing on the physiological responses of the skin to the fabrics.In this paper,a Laser Doppler Flowmetry(LDF)was used to t...     

基于最小距离原理的自适性分类方法

在遥感图像的分类中,面对自然界所固有的随机性,时间和空间的变化以及遥感设备本身的误差和噪声等的影响,如何准确地把一个像素区分为某一地物类别,一直是遥感图像分类中的难点.首先介绍了最小距离原理,基此以比较的方式详细阐述了自适性最小距离分类方法的基本思路、步骤、特点以及可能存在的不足.     

紫外线对玻璃纤维增强复合材料力学性能的老化研究

采用扫描电镜(SEM)、差式扫描量热仪和力学测试方法,研究了紫外线对玻璃纤维增强复合材料力学性能的影响.研究表明,随着紫外线辐射时间的延长,试样的拉伸强度和冲击载荷峰值总体上呈先上升后下降趋势,但冲击性能对紫外线的敏感程度要远低于拉伸性能.通过试样的Tg变化可以证明,短期紫外线辐射会引起试样的后固化,造成Tg及力学性能的上升;而长时间的光老化降解作用会导致大分子链断裂,造成Tg和力学性能的下降.     

TSL门工作机理分析

对ＴＳＬ门的工作机理分析提出了异议,认为在控制端ＥＮ＝１时,若数据输入端Ａ、Ｂ都为高电平,二极管Ｄ截止,这时ＴＳＬ门与普通ＴＴＬ与非门电路相同,但当数据输入端Ａ、Ｂ有低电平时,二极管Ｄ将不截止而是导通,这时ＴＳＬ门电路不能认为普通ＴＴＬ与非门电路相同。     

Research on the Geometry and Microstructure of the Coir Fiber

Coir fiber is derived from the coconut shells and considered to be an economical and natural material. In order to further extend its application fields,the geometry and microstructure of the coir fiber were thoroughly investigated in this research. The single fiber length measurement was carried out,and it was revealed that the length of the coir fiber was between 8 and 337 mm. Length distribution of the coir fiber was simulated by using the computer technology,and was found to be in coincidence with that ...