全文获取类型
收费全文 | 892篇 |
免费 | 11篇 |
国内免费 | 21篇 |
专业分类
教育 | 482篇 |
科学研究 | 275篇 |
各国文化 | 2篇 |
体育 | 42篇 |
综合类 | 26篇 |
信息传播 | 97篇 |
出版年
2024年 | 1篇 |
2023年 | 2篇 |
2022年 | 15篇 |
2021年 | 31篇 |
2020年 | 15篇 |
2019年 | 11篇 |
2018年 | 12篇 |
2017年 | 17篇 |
2016年 | 20篇 |
2015年 | 25篇 |
2014年 | 35篇 |
2013年 | 63篇 |
2012年 | 57篇 |
2011年 | 70篇 |
2010年 | 65篇 |
2009年 | 45篇 |
2008年 | 61篇 |
2007年 | 54篇 |
2006年 | 67篇 |
2005年 | 50篇 |
2004年 | 21篇 |
2003年 | 27篇 |
2002年 | 24篇 |
2001年 | 13篇 |
2000年 | 21篇 |
1999年 | 20篇 |
1998年 | 23篇 |
1997年 | 13篇 |
1996年 | 16篇 |
1995年 | 11篇 |
1994年 | 3篇 |
1993年 | 2篇 |
1992年 | 2篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1989年 | 1篇 |
1985年 | 3篇 |
1984年 | 2篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1973年 | 1篇 |
1971年 | 1篇 |
排序方式: 共有924条查询结果,搜索用时 0 毫秒
61.
Dietary restriction (DR) also called dietary control or calorie restriction is reported to have many advantages with regard
to human health. It leads to suppression of obesity, mitigates free radicals and increases available antioxidants which are
accounted for extending the life span of individuals. DR is also reported to induce synthesis of heat shock proteins in animals
as a control mechanism against stress. Further, it is known to play a significant role in decreasing toxicity and lethality
due to a variety of toxic chemicals and drugs by stimulating tissue repair damaged by the toxicants leading to restoration
of intact organ and its functions. Moreover, extensive work done on animals indicate DR has an important role in suppressing
certain types of cancer. In this review an effort is made to highlight the various advantages of DR from the point of human
health perspective. 相似文献
62.
本体论在公共部门知识管理体系中的应用探析 总被引:3,自引:0,他引:3
提出了本体论对公共部门知识管理体系构建的必要性,并基于本体论探讨公共部门知识管理体系的构建,包括知识发现、知识录入、知识检索模块的建立,以及知识管理体系中智能代理服务的构建。 相似文献
63.
In a context of globalisation and the rapid expansion of low-paid ‘global’ jobs, formal schooling is no longer perceived as contributing to the acquisition of skills that are appropriate or even relevant to active engagement with the new opportunities. Based on empirical material from a village in Bangladesh, this paper explores the role of madrasa education in challenging the dominant paradigm of learning embedded in formal secular schooling. Despite charges of low quality and traditionalism, local narratives reveal how madrasa learning is used to negotiate and transform inequalities, both in material and social terms. Madrasa education is cheaper, and addresses issues of poverty, but the narratives also emphasise learning the Arabic language, seen to facilitate male overseas migration to the Gulf countries, a channel for upward social and economic mobility. In a context of global competition that supports individualism, a focus on character and morality as represented through an Islamic identity, alongside communitarian values, is seen as important for maintaining a degree of social cohesion and is hence socially valued. Reading and reciting the Quran are also viewed as essential traits for a woman, enabling her to appropriately socialise her children in the absence of her migrant husband. One finds here a simultaneous process of contestation and resistance, seeking successful occupational trajectories and social recognition for men, while at the same time contributing to the reproduction of gendered inequalities. 相似文献
64.
B. V. Rao 《Resonance》2011,16(11):1029-1038
In this two-part article, we are trying to discover patterns in the decimal digits of numbers between zero and one. In Part
I we started showing that each digit occurs with frequency 1/10. We reduced the problem with the help of Borel-Cantelli Lemma
and Markov inequality to show certain sums of integrals are finite. In this concluding part we bring in an essentially new
ingredient and conclude the proof. 相似文献
65.
本文依托科学教育项目展评案例集,从课标对接、展品利用度、使用的技术、学习方式、活动的教育评估五个维度对科普教育活动实施过程进行调查和研究,并结合团队实地走访的科技博物馆访谈数据进行分析总结和探讨,旨在为科技博物馆教育活动的设计开发实施评估提供一些借鉴。 相似文献
66.
传统地球化学理论认为火山岩型铀矿的热液铀矿床中的铀都是通过氧化溶液搬运的,并由六价还原成四价而沉淀成矿;或者是是碱交代作用形成的。但大量的文献表明,铀的成矿不仅与火山岩和次火山岩有关,还与深源的中基性岩有关。 相似文献
67.
饶学刚 《黄冈职业技术学院学报》2014,(2):1-3
任何祖先、民族、文化、文明的兴起,自然社会万事万物的诞生,自有其发祥地。东坡躬耕地在黄州,东坡居士自号于黄州,东坡文化始铸于黄州,东坡文化的发祥地自然就是黄州。有当事人苏东坡和历代权威学者的文字记录为证,勿庸置疑,无人可以否定。 相似文献
68.
69.
高三学优生存在着追求完美、敏感脆弱、自我中心、心理失衡、自负自私、与他人关系紧张等心理问题.针对这些,教师可采用积极沟通,排遣其心理郁结,打磨良好的心理素质;精巧指导,折服其自负心理,教会感恩的心理品格;努力引领,启发其正确定位,培养协作的团队精神等对襞寻求解决. 相似文献
70.