Mitigation of light-induced damage on modern digital prints: Photographs and documents

This study is part of a larger research project dedicated to digital print preservation issues – the Digital Print Preservation Portal (DP3). This work quantifies the potential of glazing materials to mitigate different types of light-induced damage – colorant fade, paper yellowing, changes in paper gloss, and loss of optical brightening agent (OBA) function – that occur to digitally printed photographs and documents when on display. Prints were subjected to xenon lighting to simulate daylight through window glass in a series of arrangements: without glazing, with plain framing glass (soda-lime) in a sealed or unsealed package, and with UV blocking glass in a sealed or unsealed package. Sealed packages served the purpose of isolating the samples from atmospheric pollutants, known to contribute to the deterioration of certain print types. In this study, the use of UV-filtering glass protected prints from colorant fade, paper yellowing, and paper gloss change to an extent. Protection conveyed by plain glass was less comprehensive and less effective than UV glass. Neither type of glazing was able to keep the OBAs functional by the end of the light exposure. It was also seen that light-induced damage to digital prints is due not only to UV radiation, but also to visible light, and that different digital prints may be more vulnerable to one or the other. Protecting sensitive prints from UV radiation and budgeting the amount of light they may be exposed to should be essential to any print display policy in order to ensure longevity.     

狂欢化的世界感受——唐·巴塞尔姆的《玻璃山》对童话传统价值观念的重构

文章用巴赫金的狂欢化诗学为研究视角,结合作品的时代背景,从文学狂欢化的四个范畴:狂欢广场随便亲昵的接触、俯就与粗鄙、加冕与脱冕仪式、插科打诨来研究美国后现代主义代表作家唐纳德·巴塞尔姆的小说《玻璃山》的狂欢化特征,从而揭示小说对传统童话《公主与玻璃山》所蕴涵价值观念的颠覆与重构。     

利用玻璃密度对生产进行控制

利用悬浮法每日测定玻璃的密度，制作密度-时间曲线，通过分析其密度值大小和变化趋势，以判断各氧化物的波动情况，作为监控玻璃生产的手段．     

一首哀婉动人的抒情诗--试析《玻璃动物园》的诗化艺术

探讨<玻璃动物园>中威廉斯是如何运用表现主义手法,精心设计音乐、音响、灯光、色彩、布景、人物形体动作等,并与象征主义手法相结合,形成了自己独特的戏剧诗化艺术,从而使该剧在气氛营造、主题揭示、人物形象塑造和情绪表现等方面都展示了动人的诗歌般的魅力.     

等离子体显示屏基板玻璃及其制造工艺

根据等离子体显示屏(PDP)的制作工艺分析基板玻璃应具备的性能特征,根据玻璃的性能特征提出基板玻璃在等离子体显示屏制作应用中的主要注意事项;综合分析介绍了PDP基板玻璃的生产工艺。     

虚幻和现实——评《玻璃动物园》

作为田纳西.威廉斯的成名作和美国戏剧史上的经典之作,《玻璃动物园》广受评论界的关注。本文从内容和艺术形式两个方面来分析剧中既虚幻又现实的人生。     

玻璃光波导传感元件及其在检测挥发性有机气体中的应用

介绍了玻璃光波导的结构、工作原理、制作方法及其在检测挥发性有机气体中的应用,即过氧聚钨酸薄膜/钾离子交换玻璃光波导气体传感元件的研制过程.结果表明,所研制的传感元件能检测的甲苯蒸汽的体积比为5×10-5,体积比在5×10-5～1×10-2范围内有良好的线性关系（R=0.9940）,该传感元件具有可逆性好、容易制备、操作方便、成本低廉等特点.     

玻璃制品化学镀铜工艺的研究

玻璃镀银是一项古老而成熟的工艺,但传统所用的硝酸银价格昂贵,且银的利用率较低。本文给出了一种新的镀银液和镀铜液的基础配方,确定了较为适宜的镀银、镀铜的工艺条件和化学镀过程     

Islamic glasses from Al-Andalus. Characterisation of materials from a Murcian workshop (12th century AD, Spain)

Rescue archaeological excavations at an urban glass workshop of the 12th century AD in the city of Murcia (Spain) have provided one of the few evidences of glass production in the ancient Islamic territory of Al-Andalus. This paper reports the results derived from a chemical–physical characterisation study carried out on a representative sample set of glass fragments and industrial debris from that workshop. The main objectives of the research were to contribute to the knowledge of the type of glasses produced and provide some insights into the technology developed to obtain different colours in glasses. The resulting data indicated that both high-magnesia plant ash (HMG) soda-lime-silicate and soda-lime lead-silicate glasses were produced. They also indicated a deep knowledge of glass colouring techniques, which suggests that a careful control over the glass melting processes was achieved. Among others, the occurrence of bulk-coloured silver yellow and copper ruby red transparent glasses prove the skills reached by Murcian glassmakers. These results shed new light on the Islamic glass technology of a geographical area in which, up to now, little compositional and technological data from glass workshops were available.     

Glass ceilings in research: Evidence from a national program in Uruguay

Female researchers have lower probability than male researchers of being accepted into the largest national research support program in Uruguay. Age, scientific productivity, teaching activities and previous applications explains 5.2 percentage points of the 7.1 point gender acceptance probability gap. The remaining 1.9% can be attributed to gender discrimination. This phenomenon is stronger at the top 2 levels (out of 4) of the program evidencing glass ceilings. Results are robust to issues of simultaneity (research productivity affecting probability of being accepted and vice versa), joint determination and correlation of variables and productivity effects at early stages of career development. The paper tests four hypotheses that are likely to produce a glass ceiling in any R&D incentive schemes: male overrepresentation in the initial setup of the program, male overrepresentation on evaluation committees and two types of field-level effects (a pure composition effect without discrimination and differentiated discriminatory effects by fields). We show evidence of gender bias in the initial setup of the program and bias in the gender structure of committees. Nevertheless, these hypotheses have little quantitative power to explain the glass ceiling. The pure field composition effect is also not important. We find solid evidence of glass ceilings in the three areas where women are most active: health-related sciences, natural sciences and humanities. On the other hand, we find no such effects in social sciences, agricultural sciences or engineering.