冷光膜系的性能分析与技术改造

结合生产实际，介绍了冷光膜系的物理性能及特点，详细讨论分析了生产工艺中存在的问题，提出了改进的简便实用方法。采用改进的新方法能够提高冷光膜系制品的质量和工业化生产效率。     

半导体光催化模拟光合磷酸化研究--单色(绿)光对ATP合成的影响

以半导体材料（Zn·Cd）S：Ag-KI为催化剂，在单色(绿)光照下，成功地模拟了光合作用的光合磷酸化。在绿色光照下的光照度、照光时间、ADP(二磷酸腺苷) 浓度、Pi（磷酸氢二钠）浓度及催化剂量等对ATP（三磷酸腺苷）合成的影响。在合适的条件下，ADP 的浓度为1×10-1mmol/l 时的转化率可达到3.2%——5.8%。     

从光的衍射看光的直线传播及像质问题

光的衍射有近场衍射和远场衍射两种情形.近场衍射如小孔成像,当孔的尺寸比较大时,光线沿着直线传播,当孔小到一定程度,光线偏离了直线传播发生衍射,孔越小,衍射越显著,物体的几何像失去了清晰的轮廓,而且在边缘附近出现一系列明暗相间的条纹,从而影响了成像的质量;远场衍射如望远镜、显微镜,在物镜的像面上形成的几何像点由于衍射效应变成了一系列的衍射斑,衍射斑重叠越多,像越不清晰,严重影响了成像的质量,使得光学成像仪器的像分辨本领也有了限制.     

一部汉语言文字学研究的力作--梁光华《汉语汉字论稿》读后

梁光华先生的《汉语汉字论稿》一书 ,收录了梁先生近年来的论文四十篇 ,内容涵盖了文字学、音韵学、训诂学、语法学、词汇学、方言学、文化语言学等诸多领域。本书有以下突出的优点 :1、注意发掘新问题 ,开拓新思路 ;2、占有丰富的材料 ;3、科学的研究方法 ;4、注意科研与教学的结合。洋洋洒洒三十余万言 ,均表现出梁先生深厚的语言学功底和敏锐的视角 ,是一部语言文字学研究的力作 ,一部值得语言学者尤其是青年学者一读的好书。需要商榷的一点是轻重唇音的分化时间问题 ,梁先生主张二者分化开始于唐末 ,完成于宋初《集韵》时代 (公元 1 1世纪初 )。而笔者则认为二者的分化应开始于南朝末年至唐代初年 (公元 6世纪末至 7世纪初 ) ,完成于唐代中期。     

基于数据库联邦方式的多数据源集成检索系统

介绍了多数据源集成检索系统的产生背景和实现方式，分析了基于数据库联邦方式的多数据源集成检索系统的体系框架和异构问题，对国外的基于数据库联邦方式的多数据源集成检索系统进行了介绍和比较分析。     

Consolidation of Black-dyed Māori Textile Artefacts: Evaluating the Efficacy of Sodium Alginate

Black-dyed artefacts are found in museums worldwide, many produced using an iron-tannate compound. Deterioration of iron-tannate dyed artefacts is an international preservation issue: in New Zealand the deterioration of paru (iron-tannate) dyed Māori textiles is widespread. This article reports experimental work testing the efficacy of sodium alginate, a consolidant developed for deteriorated paru-dyed muka (fibre from harakeke; Phormium tenax). The colour stability, strength retention, and acidity of paru-dyed muka consolidated with sodium alginate (0.25, 0.5, and 1% w/v in water) was tested pre- and post-artificial light ageing. This study found that sodium alginate had no negative effect on paru-dyed muka and in some cases provided benefit. Interestingly, the colour of paru-dyed muka is substantially more stable in UV-filtered light than previously recognised. Also microfading results were in agreement with visual assessments of colour change at 1 Mlux hour exposure, providing confidence in this relatively new technique to assess colour change.     

Seeking Nettle Textiles – Utilizing a Combination of Microscopic Methods for Fibre Identification

Bast fibres have been commonly used as a textile material in Northern Europe since Neolithic times. However, the process of identifying the different species has been problematic, and many important questions related to their cultural history are still unanswered. For example, a modified Herzog test and the presence of calcium oxalate crystals have both been used in identification. In order to generate more reliable results, further research and advancement in multi-methodological methods is required. This paper introduces a combination of methods which can be used to identify and distinguish flax (Linum usitatissimum), hemp (Cannabis sativa), and stinging nettle (Urtica dioica). The research material consisted of reference fibres and 25 fibre samples obtained from 12 textiles assumed to be made of nettle. The textiles were from the Finno-Ugric and Historical Collections of The National Museum of Finland. The fibre samples were studied by observing the surface characteristics and cross sections with transmitted light microscopy, and by using a modified Herzog test with polarized light, in order to identify the distinguishable features in their morphological structures. The study showed that five out of 25 samples were cotton, 16 nettle, one flax, and one hemp. Findings from two samples were inconsistent. The results show that it is possible to distinguish common north European bast fibres from each other by using a combination of microscopic methods. Furthermore, by utilizing these combined methods, new and more reliable information could be obtained from historical ethnographic textiles, which creates new vistas for the interpretation of their cultural history.     

Mandatory Student Fees and the Academic Library

As academic libraries' budgets remain flat while their expenditures rise, library leaders must seek out alternative sources of funding. One option is a mandatory student fee dedicated to the library. This article presents the results of a survey of 152 deans and directors of public R1 and R2 research universities that were asked whether their libraries benefit from mandatory student fees. While a library-specific fee is unusual, nearly half of responding libraries are eligible to receive some portion of another mandatory student fee. Study results can serve as evidence for libraries preparing to make a case for the significant, positive impact possible through even a modest library fee.     

Evaluation of Internet Information Sources by High School Students in Ghana

The Internet clearly presents the opportunity for students to expand their knowledge at a fast pace, since they are able to access enormous amount of information. However, accessing the Internet also has its downside since not all information is of good quality. The study explored how 12th grade students at a high school in Ghana evaluated online information sources. These students and the head of the Information Communication Technology department respond to self-administered questionnaires and a semi-structured interview, respectively. The study found that most of the high school students did some kind of an evaluation of online information sources, however, they were not applying the right criteria. The study further revealed that students were not introduced to evaluation criteria at school and this had contributed to the gap in their evaluation competencies.     

理解公共文化服务：资金、人才与市场化道路的分歧

围绕公共文化服务建设,相关研究成果数量呈现快速增长趋势。但是关于推进公共文化服务的具体主张,则呈现出外在集中性、一致性与潜在矛盾性并存的格局。因此,在对相关研究成果特别是其主张进行梳理的基础上,揭示当前学界研究的主要观点及其内在的可能分歧或矛盾,对于推进公共文化服务研究及实践有着基础性作用。