PS版和感光胶片包装用衬纸的质量要求及检测指标

本文提出了PS版和胶片包装用衬纸对纸张的质量要求,以及不同质量的衬纸可能对感光材料造成的影响;并简要介绍了纸张的基本特性;作为感光材料包装用衬纸需要进行的检测指标及检测方法.     

PS版和感光胶片包装用衬纸的质量要求及检测指标

本文提出了PS版和胶片包装用衬纸对纸张的质量要求,以及不同质量的衬纸可能对感光材料造成的影响;并简要介绍了纸张的基本特性;作为感光材料包装用衬纸需要进行的检测指标及检测方法。     

电脑在感光测定中的应用

一、前言感光材料的特性曲线表征了感光材料曝光显影后影像的光学密度与曝光量(或曝光量对数)之间的关系。它虽然已有将近一百年的历史,至今仍是感光科学中最基本的曲线。由它可以推算出感光材料的许多特性,而这些特性对于选择感光材料、正确使     

黑白感光胶片的基本知识

凡是用来记录影象的材料,统称为感光材料。感光材料大致分为两类:一类是感光胶片,包括负片与正片;另一类是感光纸,包括印相纸与放大纸。感光材料又有黑白与彩色之分。本讲座就黑白感光胶片的结构、特性、特性曲线、有效期限、存放条件、包装标志、分类、选择及其应用等基本知识作一简要介绍。     

PS版和感光胶片包装用衬纸的质量要求及检测指标

本文提出TPS版和胶片包装用衬纸对纸张的质量要求，以及不同质量的衬纸可能对感光材料造成的影响；并简要介绍了纸张的基本特性；作为感光材料包装用衬纸需要进行的检测指标及检测方法。     

天津感光材料公司的发展历程

本文较详尽地介绍了我国轻工感光材料行业的老字号天津感光材料公司在新中国成立后的发展历程,及其为我国感光材料工业的发展所作的贡献。着重介绍了天感公司在发展我国军工感光材料和科技感光材料方面所做的卓有成效的工作。同时又介绍了天感公司在新世纪探索国有企业转制途径方面;坚持发展传统感光材料和数码影像材料两条腿走路方面所做的工作及取得的成绩。     

三环牌LP6328 A型氦氖激光照排片

本文介绍了天津远大感光材料公司生产的三环牌LP6328A型氦氖激光照排片的关键技术和特点，及其性能和应用特性。     

感光材料分辨力测定实验研究

使用ＰＩ－Ｃ感光材料分辨力测定仪,测定了感光材料分辨力。测定试验不仅证明感光材料分辨力测定仪器操作稳定可靠、重复性好,而且测定实验加深了对感光材料的感光影象特性的研究。实验表明,最佳焦面实际集中在各种胶片乳剂层表层。     

《感光材料》1977年总目录

综述氨基改性明胶的物理化学性质和照相性能4一13美国伊斯曼一柯达公司情况分析三种新型彩底的性能比较银漂法彩色胶片介绍介绍几种全息照相材料非银盐感光材料简介银盐感光材料光谱增感染料国外感光材料科技动态情报调查国外感光材料工业综述银盐感光材料的生产工艺非常规彩色法非常规卤化银照相感光材料遥感技术和特种摄影非银盐感光材料期页     

在摄影过程中正确理解和使用感光特性曲线

摄影起源于实验研究,而感光测定以及特性曲 线的发明,使摄影成为一门科学。感光特性曲线最 重要的功能在于它架起了曝光量和影像效果之间的 桥梁。但是在不少人眼中,感光特性曲线不过是检 验感光材料性能的工具。然而,实际上,感光特性 曲线可以诠释的内容非常广泛,从感光材料的     

Induced effect of transparent substrate composition on polypyrrole thin film

For thin films of tin dioxide, indium oxide and indium tin oxide, the substrate nature plays a determining role on their structural and morphological characteristics, which modified noticeably their optical property. On these substrates, the electropolymerization characteristics of polypyrrole exhibited the profound modifications related to the active sites for nuclei formation and their growth. These modifications induced the important change in charge transport characteristics of polypyrrole thin films.     

新版百元币防伪特征与光学鉴别

本文从纸张、油墨、印刷等方面介绍了新版百元币的票面特征、设计特点，并运用配光、显微照相、特种照相等检验手段分析了该币的防伪特征，为鉴别真伪提供了科学依据。     

Development of a Classification System for Engineering Student Characteristics Affecting College Enrollment and Retention

Background In engineering education, a considerable amount of research effort has been dedicated to study the impacts of student characteristics on their college enrollment, major selection, and college retention. However, there is no standardized categorical classification system of engineering student characteristics in the current literature. Different researchers tend to focus on specific characteristics within the scope of their research interests. This study provides a comprehensive review and analysis of the existing research on the measurement of the characteristics of engineering students. Purpose The study addressed the three questions: (1) what engineering student characteristics have been measured; (2) how do engineering student characteristics impact their educational outcomes; and (3) what measurement and analysis methods have been applied in current studies? A standardized classification system for engineering student characteristics involving external, cognitive, affective, and demographic categories is also proposed. Scope /Method The study focused on engineering education. Representative research regarding common characteristics of students from majors of science, technology, engineering, and mathematics were also included. The review covers major academic journals, research books, conference proceedings, and government reports in the areas of science and engineering education for the past two decades. Conclusions The review analysis indicated that students with certain characteristics are more likely to choose engineering as a profession and that those characteristics are either correlated or causally related with one another. However, many research conclusions based on basic statistical analyses fail to model the interaction effects. More advanced measurement techniques are needed that can model the characteristics interactively and concurrently in a complete framework.     

地域性民俗艺术符号特征研究及保护

目的地域性特征在民俗艺术研究中占有举足轻重的地位,通过民俗艺术地域性符号的研究,掌握其形成的条件和规律,有助于民俗艺术的发展。方法分析民俗艺术符号的形成条件和特征,得出地域性文化在民俗艺术中的重要性。结论对地域性民俗艺术符号特征的研究,有利于民俗艺术的传承保护。     

Characteristics and effect of thermal treatment on surface texture of ultrafine zirconia powders

Yttria-stabilized zirconia ultrafine powders were prepared by the hydrolysis of their hydroxide at 200° C. The powders obtained were investigated for their crystal structure and degree of fineness. The surface characteristics of the prepared powders were determined by nitrogen gas adsorption. The effect of calcination conditions on the powder characteristics were thoroughly investigated and the results discussed in relation to their surface textures and degree of crystallinity.     

Characteristics of HgCdTe epilayer grown by LPE using horizontal slider

The characteristics of HgCdTe epilayers grown in a modified horizontal slider system, are reported here. The surface morphology of the grown layers, their IR transmission characteristics, depth and lateral compositional uniformity, structural and electrical characteristics are discussed.     

Carbon Nanotubes in the Biological Interphase: The Relevance of Noncovalence

With the increasing interest in the biological applications of carbon nanotubes, their interactions in the biological interphase and their general cytotoxicity have become major issues. In spite of their salient properties, major hurdles still exist for their use in biological applications, due to their main characteristics, including their hydrophobic surfaces and tendency to aggregate, as well as their unknown interactions in the cellular interphase. In this Research News, these characteristics of carbon nanotubes, a model nanomaterial, are investigated. Thus, the cytotoxicity of carbon nanotubes, the influence of functionalization, as well as their interactions with different mammalian cell lines are studied. Moreover, suggestions for the improvement of their biocompatibility and the design of biocompatible carbon nanotube‐based systems are provided.     

CNT Cytotoxicity: Carbon Nanotubes in the Biological Interphase: The Relevance of Noncovalence (Adv. Mater. 36/2010)

With the increasing interest in the biological applications of carbon nanotubes, their interactions in the biological interphase and their general cytotoxicity have become major issues. In spite of their salient properties, major hurdles still exist for their use in biological applications, due to their main characteristics, including their hydrophobic surfaces and tendency to aggregate, as well as their unknown interactions in the cellular interphase. In this Research News, these characteristics of carbon nanotubes, a model nanomaterial, are investigated. Thus, the cytotoxicity of carbon nanotubes, the influence of functionalization, as well as their interactions with different mammalian cell lines are studied. Moreover, suggestions for the improvement of their biocompatibility and the design of biocompatible carbon nanotube‐based systems are provided.     

减震器橡胶连接件的动态特性实验研究以及参数识别

麦弗逊悬架中,为了提高乘坐舒适性,减震器和车体之间采用橡胶 钢零件作为弹性连接.为了更好地研究此橡胶连接件对汽车悬架垂向动态特性的影响,对其垂向动态特性进行实验研究.根据其在汽车中的实际使用情况,在MTS 810万能材料试验机上对其动态特性进行了测试.汽车在行驶过程中的频率范围多在1～12 Hz之间,因此将动态测试实验的频率范围设置在相同的频率范围内.在实验的基础上,基于双折线恢复力的迟滞回线模型,建立了橡胶连接件的动态数学模型,将其迟滞回线分解为一次弹性恢复力、三次弹性恢复力、线性阻尼力和双折线恢复力,并对建立的恢复力模型中的参数分批进行识别,提高了弱参数项的识别精度.通过与实验曲线对比,仿真得到的模型曲线与实际测试曲线吻合得较好,尤其对于阻尼力相对较小的系统,满足实际工程计算的要求,为研究橡胶对悬架动力学的影响奠定了良好的基础.     

Determination of nanotubes properties by Raman spectroscopy

The basic concepts and characteristics of Raman spectra from single-wall carbon nanotubes (SWNTs, both isolated and bundled) are presented. The physical properties of the SWNTs are introduced, followed by the conceptual framework and characteristics of their Raman spectra. Each Raman feature, namely the radial breathing mode, the tangential G band, combination modes and disorder-induced bands are discussed, addressing their physical origin, as well as their capability for characterizing SWNT properties.