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??OBJECTIVE To determine the contents of six oligosaccharides, i.e. glucose, fructose, sucrose, 1-kestose, nystose, 1^F-fructofuranosylnystose, in the roots of Morinda officinalis in different growing periods by HPAEC-PAD method. METHODS The separation was performed on Hamilton RCX-10 column(4.1 mm??250 mm, 7 ??m) with gradient elution using mobile phase composed of 100 mmol??L^-1 NaOH(A)and mixture of 100 mmol??L^-1 NaOH and 500 mmol??L^-1 NaOAc (B) at a flow rate of 0.8 mL?? min^-1 and the temperature was kept at 35 ??. The injection volumn was 25 ??L. The gradient elution program was as follows: 0-5 min,1%B;5-15 min,1%-9% B;15-20 min,9%-12% B;20-25 min,12%-16% B;25-40 min,16%-50% B;40-43 min,50% B;43-46 min,50%-1% B. RESULTS With the increase of growing periods, the content of monosaccharide progressively reduced while that of sucrose gradually increased. The contents of oligosaccharides with polymerization degree of 3 or greater, including 1-kestose, nystose, and 1^F-fructofuranosylnystose, slowly increased during 1-5 years, then slowed down. CONCLUSION The contents of six oligosaccharides in the roots of Morinda officinalis vary greatly in different growing periods, indicating that the biosynthesis of oligosacchride in Morinda officinalis is related to growing periods. The result provides a reference for determination of appropriate collection time.
     

空间框架-十字交叉基础梁与弹性地基相互作用简化分析的超元法

提出空间框架-十字交叉基础梁与弹性地基相互作用简化分析的超元法 ,即将空间框架和十字交叉基础梁简化处理为十字交叉剪-弯梁 ,按柱距划分为超级单元 ,用有限元分析与不同弹性地基相互作用问题 ,计算简便 ,应用广泛     

叶淮同志新作《霞绯集》读后感

诗友叶淮同志于1995、1997年相继出版了《伏枥集》与《三昧集》之后，现在又推出其新作《霞绯集》，这是在其前两部诗集的基础之上有所提高、有所开拓、有所创新的一部新诗集。其中有相当部分的作品均已先后发表于国内诗词刊物之上，如《当代寺词》、《江海待词》、《中华诗     

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论述网络化是图书馆发展的必由之路、自动化与网络化的关系、我国图书馆网络的发展趋势以及我国现阶段图书馆网络建设的发展道路。     

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��[Purpose/significance] To construct a fine-grained sentiment analysis model for product reviews based on Word2Vec and CNN.[Method/process] This paper firstly applied Word2vec to build product feature vocabulary and noise vocabulary based on product reviews, secondly extracted the feature words from product reviews by the noise vocabulary, then classified the product reviews according to product features sentiment, finally realized product reviews clustering based on product features.[Result/conclusion] The model was trained and tested by the reviews of Huawei mobile phone on JingDong Mall,the results showed that the model could effectively realize fine-grained sentiment analysis of product reviews and find out users focus and satisfaction on product features.     

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��[Purpose/significance] This paper aimed to analyze the information service contents, co-occurrence relationships and influences of universities libraries' WeChat official accounts.[Method/process] Firstly, this paper summarized the related research of information service and information diffusion influence. And then, analyzing the information service items and constructing a relationship network based on the co-occurrence matrix of nine famous university libraries' WeChat official account; in order to compare the importance of different nodes, the closeness centrality has been calculated. Finally, the WeChat influence index(WCI) of each WeChat official account have been calculated, the impact of different service on WCI has been compared by the analyzing of high-reading contents.[Result/conclusion] The results showed that user information, resource search and information delivery take the relative important positions in the network, but only information delivery service has the highest impact on WCI, resource search, user information, interaction & consultation, and other service have little impact.     

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��[Purpose/significance] Under the background of strengthening cultural self-confidence and promoting cultural prosperity, the promotion of traditional cultural audio books has emerged one after another. Carrying out research on the performance evaluation of traditional culture audio book reading promotion in a timely manner will help to find the main influencing factors of traditional culture audio book reading promotion, refine the realization channels of traditional culture audio book reading promotion and development, and provide assistance for carrying forward the excellent traditional culture of the Chinese nation.[Method/process] This paper analyzed the necessity of constructing the performance evaluation index system of traditional culture audio book reading promotion. Based on the performance prism model, it analyzed the influencing factors of traditional culture audio book reading promotion performance. Using Delphi method, Grey statistics and analytic hierarchy process to construct the traditional culture audio book reading performance evaluation index system and determine the weight.[Result/conclusion] This paper constructs a "traditional culture audiobook reading performance evaluation index system" consisting of 3 first-level indicators, 12 second-level indicators and 54 third-level indicators. Based on this, an empirical analysis of the traditional cultural audio book reading promotion of Himalayan FM is carried out. Finally, starting from the dimensions of content, form, resources, technology, characteristics, propaganda, etc., the promotion strategy of traditional culture audio book reading is proposed.