全文获取类型
收费全文 | 10916篇 |
免费 | 137篇 |
国内免费 | 8篇 |
专业分类
教育 | 7906篇 |
科学研究 | 997篇 |
各国文化 | 162篇 |
体育 | 711篇 |
综合类 | 13篇 |
文化理论 | 116篇 |
信息传播 | 1156篇 |
出版年
2021年 | 75篇 |
2020年 | 110篇 |
2019年 | 199篇 |
2018年 | 255篇 |
2017年 | 315篇 |
2016年 | 288篇 |
2015年 | 230篇 |
2014年 | 279篇 |
2013年 | 2430篇 |
2012年 | 229篇 |
2011年 | 255篇 |
2010年 | 233篇 |
2009年 | 195篇 |
2008年 | 248篇 |
2007年 | 251篇 |
2006年 | 225篇 |
2005年 | 220篇 |
2004年 | 217篇 |
2003年 | 186篇 |
2002年 | 174篇 |
2001年 | 151篇 |
2000年 | 168篇 |
1999年 | 185篇 |
1998年 | 132篇 |
1997年 | 130篇 |
1996年 | 137篇 |
1995年 | 162篇 |
1994年 | 134篇 |
1993年 | 119篇 |
1992年 | 135篇 |
1991年 | 138篇 |
1990年 | 147篇 |
1989年 | 141篇 |
1988年 | 128篇 |
1987年 | 117篇 |
1986年 | 119篇 |
1985年 | 137篇 |
1984年 | 139篇 |
1983年 | 127篇 |
1982年 | 135篇 |
1981年 | 102篇 |
1980年 | 78篇 |
1979年 | 101篇 |
1978年 | 105篇 |
1977年 | 104篇 |
1976年 | 84篇 |
1975年 | 68篇 |
1974年 | 75篇 |
1973年 | 70篇 |
1971年 | 61篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
Fadhaa A. Ghafil Bassim I. Mohammad Hussain S. Al-Janabi Najah R. Hadi Hayder A. Al-Aubaidy 《Indian journal of clinical biochemistry : IJCB》2021,36(1):81
Genetic variation in the angiotensin II type 1 receptor (AT1R) has an important effect on the outcome of acute coronary syndrome (ACS) initiated treatment with captopril. This study aims to investigate the impact of genetic polymorphism of AT1R (rs5186 and rs275651) on the ACS outcome in Iraqi patients treated with captopril. A total of 250 Iraqi individuals with ACS were included in this case—control study and they were divided into two study groups; Study group 1 included 125 participants who were prescribed captopril, 25 mg twice daily and study group 2 included 125 participants who received no captopril as part of their ACS treatment (control study). The AT1R gene (rs5186) CC genotype was found to be associated with ST-elevation myocardial infarction (STEMI) (Odd’s ratio (O.R) = 1.2, P = 0.7), while AC was associated with Non-ST-elevation myocardial infarction (NSTEMI) and unstable angina (UA) (O.R = 1.2, P = 0.8). AC genotype is more prone to have Percutaneous coronary intervention (PCI) after ACS attack (O.R = 1.2, P = 0.6). CC genotype had a risk to get less improvement (O.R = 1.6, P = 0.5), so might require higher doses of captopril during acute coronary insult. The AT1R gene (rs275651) AA genotype was associated with UA (O.R = 1.3, P = 0.9). AA and AT genotypes were more prone to have PCI after ACS attack (O.R = 3.9 P = 0.2, O.R = 3.5, P = 0.3 respectively) and thus requiring higher doses of captopril. We conclude that the AT1R rs5186, rs275651 genetic polymorphisms might partially affect the clinical outcome of ACS patients treated with captopril and might have captopril resistance which requires higher doses. 相似文献
3.
4.
5.
6.
With the exception of lecturing staff, research on occupational groups and cultures within the UK higher education system is relatively sparse. This paper focuses upon one specialist group, to-date under-researched but which plays a central role in contemporary higher education administration: graduate research administrators. This occupational group is of particular interest as its members administer and manage an increasing complex and key area of university life, which in many cases appears to span the putative occupational divide between 'academic' and 'administrative' work. Based upon qualitative interviews with 27 research administrators, and using some of Bourdieu's conceptual devices, the paper analyses particular kinds of informal occupational knowledge and practice, necessary in order effectively to 'do' the complex task of research administration in the pressurized environment of contemporary British higher education. 相似文献
7.
8.
John Holland 《Pastoral Care in Education》2004,22(1):10-14
The paper discusses elements of the findings of 'Iceberg', a doctoral study at the University of York addressing many issues of child bereavement through a retrospective study of nearly one hundred individuals who had either experienced the death of a parent when they were at school, or were the surviving parent of such a child. The research revealed issues of lack of control and information for children after a parental death. Forty-seven per cent of those in the study attended the funeral of their parent. There was correlation between the age of children and attendance at the funeral. Of the fifty-three per cent of children not attending, twenty-four per cent of them were forbidden to attend, whilst eleven per cent of them were distracted from attending the funeral, such as being sent to school or a neighbours and being unaware that it was taking place. None of the children attending the funeral reported any negative experiences, and two thirds of them reported it as a positive or helpful event. In contrast, over three-quarters of those not attending later wished that they had. Over a third had feelings of regret, others feeling that they had been excluded from the family at the time of the death, and felt anger, hurt, and frustration. The conclusion was that the best strategy is to give children informed choice about whether or not to attend. If children do attend a negative outcome seems unlikely, but it would be prudent to prepare them as to what to expect at the ceremony. 相似文献
9.
10.