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121.
朱文藻编著的《葆醇堂藏书录》采用"经、艺、史、志、子、集、类、说"八分法,试图打破四部分类框架。他整合小类设立艺部,把志部、类部、说部提升为一级类目,调整部分二、三级类目的划分、名称和顺序,对类书的性质和丛书的价值做出新认识,反映出以小学、金石学、舆地之学等为代表的乾嘉学术风貌。《葆醇堂藏书录》本着灵活变通的编目原则,力求突破四分法的桎梏,在图书分类上体现学术发展,是古籍目录辨章学术、考镜源流的积极尝试。 相似文献
122.
数字资源采访实践工作中,图书馆面临着极大的版权风险。基于近年来图书馆数字资源相关版权纠纷统计分析,总结采购数字资源中的版权风险主要包括数字资源中含侵权作品、合同风险、服务风险等。图书馆应该对我国著作权相关法律中图书馆的版权例外保护条款和数字资源采访中的版权风险有充分而深入的认识,积极参与相关法律法规的完善,加强对数字资源供应商、资源合法性和合同的审查,强化数字资源服务中的技术保护措施、注意和告知义务,并制定图书馆版权管理办法。 相似文献
123.
Liu GF Zhou HK Hu H Zhu ZH Hayat Y Xu HM Yang J 《Journal of Zhejiang University. Science. B》2007,8(12):860-866
Brix weight per stool (BW) of sugarcane is a complex trait, which is the final product of a combination of many components. Diallel cross experiments were conducted during a period of two years for BW and its five component traits, including stalk diameter (SD), stalk length (SL), stalk number (SN), stalk weight (SW), and brix scale (BS) of sugarcane. Phenotypic data of all the six traits were analyzed by mixed linear model and their phenotype variances were portioned into additive (A),dominance (D), additive×environment interaction (AE) and dominance×environment interaction (DE) effects, and the correlations of A, D, AE and DE effects between BW and its components were estimated. Conditional analysis was employed to investigate the contribution of the components traits to the variances of A, D, AE and DE effects of BW. It was observed that the heritabilities of BW were significantly attributed to A, D and DE by 23.9%, 30.9% and 28.5%, respectively. The variance of A effect for BW was significantly affected by SL, SN and BS by 25.3%, 93.7% and 17.4%, respectively. The variances of D and DE effects for BW were also significantly influenced by all the five components by 5.1%~85.5%. These determinants might be helpful in sugarcane breeding and provide valuable information for multiple-trait improvement of BW. 相似文献
124.
Genetic analysis of fruit shape traits at different maturation stages in sponge gourd 总被引:5,自引:0,他引:5
The fruit shape is important quantitative trait closely related to the fruit quality. However, the genetic model of fruit shapes has not been proposed. Therefore, in the present study, analysis of genetic effects for fruit shape traits (fruit length and fruit perimeter) in sponge gourd was conducted by employing a developmental genetic model including fruit direct effects and maternal effects. Analysis approaches of unconditional and conditional variances were applied to evaluate the genetic behavior of fruit shape traits at economical and physiological maturation times. The results of variance analysis indicated that fruit length and fruit perimeter were simultaneously affected by fruit direct genetic effects and maternal effects. Fruit direct genetic effects were relatively more important for fruit shape traits at whole developmental period. The gene expression was most active at the economical maturation stage (1-12 d after flowering) for two shape traits, and the activation of gene was mostly due to direct dominance effects at physiological maturation stage (13-60 datter flowering). The coefficients due to different genetic effects, as well as the phenotypic correlation coefficients, varied significantly between fruit shape traits themselves at various maturation stages. The results showed that it was relatively easy to improve fruit shape traits for industrial purpose by carefully selecting the parents at economical maturation stage instead of that at physiological maturation stage. 相似文献
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127.
采用静态容量法研制开发了适于高压条件下的静态吸附仪,阐述了仪器的工作原理和功能结构,并采用该仪器测定了活性炭对CO2、CH4和N2的吸附量,获得了吸附剂在不同高压条件下对各气体的吸附容量数据。该吸附仪能直观地分析吸附剂对气体的吸附特性,对吸附剂的工程应用有着重要的指导作用。此外,该仪器能够与上位计算机通过串口进行通讯,实现测量数据的实时显示与存储。 相似文献
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129.
地方本科院校实施大学生科研训练计划(SRTP)的初步探讨 总被引:1,自引:0,他引:1
大学生科研训练计划可以有效提高大学生的创新能力、实践能力和综合素质。阐述了大学生科研训练计划在地方本科院校实施的必要性,分析了目前地方本科院校在实施大学生科研训练计划中存在的问题,并提出了合理化建议。 相似文献
130.
基于平台的网络课程建设—以光学测试技术网络课程为例 总被引:1,自引:0,他引:1
针对光学测试技术课程传统教学模式中存在的问题,依托"军队院校网络教学应用系统"平台,构建了网络课程,介绍了网络课程的主要内容、功能模块以及在实际应用中产生的效果。 相似文献