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采用文献计量方法,对国内学习共享空间研究领域论文的时间分布、著者分布、期刊分布、关键词词频分布、基金论文分布及主题分布进行了定量分析,以考察这一领域研究现状,为今后研究作出参考。 相似文献
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研究了发源于美国的LC教学框架和方法及其进行本土化改造后,应用于国内语言学教学实践的情况,并在此框架下探讨教师资源整合的重要内容,希望使其服务于高校的特色发展、教师专业和科研水平的提高,以及创新型、应用型人才的培养. 相似文献
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AbstractThe Program for Cooperative Cataloging (PCC) has formal relationships with the Library of Congress (LC), Share-VDE, and Linked Data for Production Phase 2 (LD4P2) for work on Bibliographic Framework (BIBFRAME), and PCC institutions have been very active in the exploration of MARC to BIBFRAME conversion processes. This article will review the involvement of PCC in the development of BIBFRAME and examine the work of LC, Share-VDE, and LD4P2 on MARC to BIBFRAME conversion. It will conclude with a discussion of areas for further exploration by the PCC leading up to the creation of PCC conversion specifications and PCC BIBFRAME data. 相似文献
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建立了化妆品中酸性橙7和碱性嫩黄O的高效液相色谱法。方法以甲醇为萃取溶剂,过0.45μm滤膜过滤后,以0.02 mol/L乙酸铵和甲醇经反相色谱柱梯度洗脱后,采用二极管阵列检测器检测,并用外标法定量计算。在5.0~20.0 mg/kg的添加水平,回收率在83.9%~94.0%之间,变异系数在4.4%~7.2%之间。 相似文献
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ＩＮＴＲＯＤＵＣＴＩＯＮＩｎｒｅｃｅｎｔｙｅａｒｓＬＣｈａｓｂｅｃｏｍｅｔｈｅｍｏｓｔｃｏｍｍｏｎｔｈｅｒａｐｅｕｔｉｃｍｏｄａｌｉｔｙｆｏｒｃｈｏｌｅｌｉｔｈｉａｓｉｓ.(Ｆｒｕｚｅｅ ,Ｒ .Ｃ .ｅｔａｌ.,1 993 )ＴｈｅｆｉｎｄｉｎｇｏｆＣＢＤｓｔｏｎｅｓｂｙｉｎｔｒａｏｐｅｒａｔｉｖｅｃｈｏｌａｎｇｉｏｇｒａｐｈｙｉｓｔｈｅｍａｊｏｒｒｅａｓｏｎｆｏｒｒｅｓｏｒｔｉｎｇｔｏｏｐｅｎｃｈｏｌｅｃｙｃ ｔｅｃｔｏｍｙ .ＴｈｉｓｒｅｓｅａｒｃｈｗａｓｄｏｎｅｔｏｃｏｍｐａｒｅｃｏｍｂｉｎｅｄＬＣａｎｄＥ… 相似文献
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[目的]研究三丁基锡（Tributyltin,TBT）化合物对黑腹果蝇（Drosophila melanogaster）的致死效应和生殖阻碍作用。[方法]先进行TBT对黑腹果蝇的半致死剂量测定．再利用初次产卵时间、产卵数量和孵化率指标衡量TBT的生殖阻碍作用。[结果]TBT对野生型黑腹果蝇的24h、48h、72h和96hLc50分别是441μM、270μM、220μM和191μM。随着TBT浓度的升高。野生型、残翅型和白眼型果蝇的初次产卵时间均呈现推延现象,并且产卵数量和孵化率也呈现递减趋势。[结论]黑腹果蝇对TBT具有高耐受力。TBT具有显著的生殖阻碍作用,必须禁止TBT的使用以降低生态危害。 相似文献
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学习共享空间是信息共享空间发展到新阶段的产物,其目标是通过协作的方式,多方面地为学习者的知识创造提供更快更准确的学习支持以及一体化的信息服务。文章在总结公共图书馆的社会使命的基础上,结合公共图书馆与大学图书馆在开展学习共享空间方面的对比研究,来探讨公共图书馆构建学习共享空间的必要性、可行性,并提出相应的构建模式与构建策略。 相似文献
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评估与评价信息或学习共享空间(Information/Learning Commons,简称IC/LC),不仅对管理者和用户明确建设目标、评判IC的价值或效果、衡量满意度、保证IC良性运行,提高IC服务水平等有着重要意义,而且为管理者、投资人及监督、考评部门实施有效管理以适应时代变革提供科学依据,它贯穿IC(LC)规划与运营的整个过程,是IC规划与实施中最为重要的一环。IC的评估与评价需要科学的调查与调研。该文探讨了调查与调研在IC评估与评价中的应用问题,认为调查与调研对于评估与评价IC规划与实施有着重要的指导意义。 相似文献
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Gao Min Zhou Wen Shi Jian-ming Hong De-fei Mu Yi-ping Wang Jian-guo Wang Yao-dong 《浙江大学学报(A卷英文版)》2000,1(4):456-458
Objective: To evaluate the benefit of intraoperative ERCP and endoscopic sphincterotomy (EST) combined with laparoscopic cholecystectomy
(LC) in the treatment of cholelithiasis with choledocholithiasis. Methods: Fifty-two patients with cholelithiasis and choledocholithiasis
(as determined by intraoperative cholangiography) were randomly divided into 2 groups during LC. In group A (27 patients),
common bile duct stones were extracted by intraoperative EST during LC. In group B(25 patients), common bile duct (CBD) stones
were extracted by conversion to open CBD exploration and cholecyctectomy. Results: The success rate was 26/27 (96.3%) in group
A and 25/25 (100%) in group B (0.25<P<0.5); The mean postoperative hospitalization was 3.32±0.56 days in group A and 17.5±4.61 days in group B (P<0.001). In group A, two cases were complicated transient hyperamylasemia after the combined procedure. In group B, one case
of bile leakage and one case of duodenal ulcer occurred after conversion to open cholecystectomy with CBD exploration. There
were no retained stones in group A but 2 cases in group B. Conclusion: Intraoperative ERCP and endoscopic sphincterotomy combined
with LC for treatment of cholelithiasis and chiledochlithiasis is safe, effective and results in shorter hospitalization and
fewer complications than traditional open cholecystectomy with CBD exploration. 相似文献