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传统观点普遍认为,近代中国最早开展研究生教育的教会大学为圣约翰大学,时间是1908年前;其次为震旦大学,时间为1912年前;再次为东吴大学,时间为1915年或1916年.经过对史料的深度挖掘后发现,事实上,近代中国最早开始研究生教育的教会大学实为震旦大学,始于1914年;其次为东吴大学,始于1915年或1916年;再次方为圣约翰大学,始于1919年. 相似文献
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本文介绍了RFID技术的工作原理,分析了RFID技术在国内外图书馆领域应用的现状,最后指出目前RFID技术在图书馆应用中存在的问题及解决方法。 相似文献
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整合资源强化服务——论新时期报业集团图书资料服务工作 总被引:1,自引:0,他引:1
本文阐述了新闻单位报业集团成立后图书资料的服务工作,旨在更好地为办报服务. 相似文献
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人体解剖学的美学初析 总被引:1,自引:0,他引:1
人体不仅是一个生物体,而且也是一件巧夺天工的艺术品。历来都被作为美的对象来研究、认识和表现,几乎反映了所有美的规律,其形态结构、生理功能是人体美的基本要素,它是形式美法则在人体美中的具体表现。从人体的结构分布、及体形所表现,人体聚集了所有形式美的法则,在审美行为的指导下才能充分表现,所以人体美既需要人体解剖学作为支架和体形来展示,也需要美学法则和审美行为来表现。 相似文献
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职业倦怠现象在高校图书馆里客观存在,女性馆员的职业倦怠尤其值得重视.其形成既有女性馆员生理、心理层面的因素,也有社会环境和职业自身方面的原因,应从实施人本管理、和谐人文环境、提升自身素质三个方面采取积极的举措加以防范和抑制. 相似文献
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当代博士生培养质量评价是对当代博士生培养活动及其效果优劣程度进行综合评判,它集中体现于博士学位获得者原创性知识贡献评价、学术研究素养评价和对就业市场的适应性评价三个方面。以知识生产模式转型为背景来观照当代博士生培养质量评价,就是强调用知识生产模式转型中的知识创新思想、学术训练要求和博士生对就业市场的适应性标准来评价博士生培养质量,优化博士生培养质量评价模式与机制,使当代博士生培养质量评价的视角、内容、制度等与知识生产模式转型的要求相适应。 相似文献
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In this study, liquid-phase aerobic oxidation of toluene catalyzed by Mn–Mo oxide was conducted in a 1.0 L batch reactor. The macroscopic kinetics of toluene consumption and benzaldehyde generation at 413–443 K were obtained from a combination of experimental observation and hypothetical models. The results clearly showed that both the oxidation rate of toluene and generation rate of the aromatic product were proportional to the concentration of the substrate, the partial pressure of oxygen and the surface area of the catalyst. The energy barrier of toluene oxidation to benzyl alcohol was the highest(≈ 81 kJ mol~(-1)), while that of benzyl alcohol oxidation to benzaldehyde was the lowest(≈ 57 kJ mol~(-1)). Moreover, the activation energy of further oxidation of benzaldehyde in an acetic acid solvent was only slightly lower(≈ 1.9 kJ mol~(-1)) than that of toluene oxidation. Significantly, the transformation of benzyl alcohol indeed contributed to the generation of benzaldehyde and this step conformed to a first-order parallel-consecutive model. Increased reaction temperature and residence time favored the transformation of benzyl alcohol to benzaldehyde. In addition, doping with molybdenum at Mn/Mo = 3/1 enhanced the catalytic performance of the heterogeneous catalyst and was attributed to the presence of a synergetic effect between different metal cations. Regarding the microscopic kinetics, the LH-OS-ND mechanism(Langmuir–Hinshelwood adsorption of reagents on the same type of active sites and non-dissociative adsorption of oxygen) was verified as responsible for the heterogeneous oxidation of toluene. Oxygen and benzaldehyde were weakly adsorbed(Δ H_(ads,Oxy) ≈~(-1)5 kJ mol~(-1), Δ H _(ads)0,Bald) ≈-30 kJ mol~(-1)), but showed strong mobility(Δ S_(ads,Oxy) ≈-22 J mol~(-1) K~(-1)), Δ S_(ads,Bald) ≈-39 J mol~(-1) K~(-1)). The fundamental intrinsic rates were deduced based on the LH-OS-ND mechanism and showed great consistency with the macroscopic results. 相似文献
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