零散有存档权PDF文件的采、编、检管理工具

通过"电子文献网络结构技术",来解决国内重点关注的"对开放存取数字全文资源即采、即编、即检管理系统"问题。实现了本地允许保存零散PDF文件的再标引,通过云计算技术实现了对文献题录的时时采集、时时编辑、时时检索。通过PubMed中PMID编号自动链接PDF,实现允许保存的零散PDF电子资源即采、即编、即检管理系统。     

替代紫木节复合原料研究

通过优选复合方案、选择原料预处理工艺、调整泥浆性能,实现了复合粘土原料化学组成、颗粒组成与紫木节一致,保证了复合粘土可塑性及泥浆性能均达到或超过紫木节各项性能指标。试验结果表明:以长白山高岭土81.3wt%,苏州土4.1wt%,东北黑泥12.2wt%,龙岩土2.4wt%复合使用最佳,复合粘土原料注浆泥的比重、细度、流动性、稳定性基本与紫木节一致,厚化度略有减小,有利于泥浆的输送和注浆成型操作;坯体的收缩率减小,大大降低坯体变形、开裂的可能性;生坯干燥强度提高,有利于提高成品率;复合原料杂质含量低,烧后坯体白度提高。     

地方文献的搜集和利用现状——贵阳学院贵阳文化特色专题库建设的思考

本文主要从地方文献搜集、数字化处理和利用现状出发,讨论地方文献建设利用的现实意义和打造过程中存在的各种问题,并有针对性的提出了应对措施。     

Evaluation of English Teaching Materials in Terms of Learning and Motivation

This study investigates the relationship between the teaching materials and motivation in second language acquisition.An evaluation of teaching materials based on Dornyei’s motivation construct has been employed.The results indicate students and teacher are basically satisfied with the textbook.Many factors,which affect student’ s motivation towards teaching materials,are perceived.     

大学生阅读取向对高校图书馆馆藏建设的启示

大学生是高校图书馆的主要读者,大学生的阅读取向和高校图书馆馆藏建设息息相关。把握大学生阅读取向的动向,对高校图书馆馆藏建设有重要的意义。     

浅论闽江学院图书馆“闽都文化＂特色馆藏的构建

“闽都文化”内涵丰富、源远流长,并随着闽都移民的足迹流播海内外,影响深广。构建“闽都文化”特藏,多维度、多渠道收集、整合、开发与利用闽都地方文献,不但有利于大学生素质教育与区域文化研究,而且对区域经济的协调发展,对促进闽台经济文化交流与合作,增强民族凝聚力以及对推动和谐社会的构建等都将发挥积极有效的作用。     

南充市同域分布的白腰文鸟白颊噪鹛和白头鹎巢和巢材比较研究

2011年2—9月对四川省南充市西山风景区人工林白腰文鸟、白颊噪鹛和白头鹎3种同域分布鸟类鸟巢及巢材进行了相关研究．结果表明：在该研究区域内,3种鸟的总营巢数为19个．鸟巢参数测量结果显示,3种鸟巢离地高、巢干重、外长半径、外短半径、内短半径之间的差异不显著,巢深、巢高2种指标在自腰文鸟和另2种鸟巢之间存在的差异达到极显著水平,而内长半径的极显著性差异出现在白腰文鸟和白颊噪鹛两种鸟之间;3种鸟巢均可明显分为3层,固定层、沥水层和调温层;3种鸟的巢材选择较为广泛,白腰文鸟、白颊噪鹛和白头鹎巢材选择种类依次为16种、27种和25种,分属禾本科、莎草科、樟科、桑科、十字花科、柏科、苔藓植物门石竹亚纲、苋科、葡萄科、木犀科、芸香科、蓼科和豆科植物．其中：3种鸟共同选择的巢材有白茅、风尾竹叶、荩草、天竺桂树叶、矛叶荩草、小叶榕气生根、薄菜、侧柏、构树叶、獯草、慈竹叶和密序野古草等12种植物;白腰文鸟、白颊噪鹛和白头鹎各自选择最多的巢材依次是小糠草、枇杷树叶和荩草,占其各自干重的比例为43．68％、13．98％和14．05％．     

Alternaria toxin-induced resistance against rose aphids and olfactory response of aphids to toxin-induced volatiles of rose plants

The search for active toxins for managing weeds or plant diseases is believed to be a promising avenue of investigation. However, the effects of Alternaria toxins on insects have just begun to be investigated. Bioactivities of toxins from four strains of Alternaria alternata on Rosa chinensis and rose aphid Macrosiphum rosivorum were tested in the present study. At a concentration of 50.0 μg/ml, the crude extract (toxin) of strain 7484 was found not to be harmful to rose plants with excised leaf-puncture method (P≥0.079), and rose plants showed enhanced resistance to rose aphids when this Alternaria toxin was sprayed on the plants (P≤0.001). However, this toxin caused no detrimental effects on aphids in insecticidal bioassay at a concentration of 10.0 to 160.0 μg/ml (P≥0.096). Therefore, the Alternaria toxin had significantly induced the resistance of rose plants against rose aphids, demonstrating that the resistance mechanism triggered by the Alternaria toxin in the rose plant may also be used by the plant to defend itself against insects. Further bioassays aimed to discover the olfactory responses of aphids to the toxin-induced volatiles of host plants. The aphids were significantly more attracted to both volatiles emitted and collected from control rose plants than to both volatiles emitted and collected from the toxin-treated rose plants (P≤0.014). This result showed that the toxin-induced resistance related to the volatile changes of host plants.     

浅谈.NET Framework中的垃圾回收机制

垃圾回收器(GC)是.Net平台提供的新功能,深入探讨垃圾回收器的功能、工作原理以及如何控制,对于程序员将来写出高性能的应用程序有着非常重要的意义。     

绿色化学与文物保护

概述了绿色化学的现代内涵以及绿色化学与文物保护的关系。从材料的绿色化、溶剂的绿色化、化学方法和反应的绿色化等方面探讨了绿色化学在文物保护中的应用,特别指出改善文物的保存环境是最好的绿色保护方法。