全文获取类型
收费全文 | 925篇 |
免费 | 28篇 |
专业分类
各国政治 | 36篇 |
工人农民 | 67篇 |
世界政治 | 98篇 |
外交国际关系 | 72篇 |
法律 | 439篇 |
中国政治 | 7篇 |
政治理论 | 227篇 |
综合类 | 7篇 |
出版年
2023年 | 3篇 |
2022年 | 9篇 |
2021年 | 10篇 |
2020年 | 38篇 |
2019年 | 26篇 |
2018年 | 34篇 |
2017年 | 36篇 |
2016年 | 29篇 |
2015年 | 37篇 |
2014年 | 27篇 |
2013年 | 136篇 |
2012年 | 29篇 |
2011年 | 30篇 |
2010年 | 35篇 |
2009年 | 30篇 |
2008年 | 27篇 |
2007年 | 22篇 |
2006年 | 27篇 |
2005年 | 30篇 |
2004年 | 28篇 |
2003年 | 24篇 |
2002年 | 19篇 |
2001年 | 21篇 |
2000年 | 30篇 |
1999年 | 17篇 |
1998年 | 18篇 |
1997年 | 15篇 |
1996年 | 11篇 |
1995年 | 12篇 |
1994年 | 13篇 |
1993年 | 11篇 |
1992年 | 9篇 |
1991年 | 5篇 |
1990年 | 9篇 |
1989年 | 12篇 |
1988年 | 12篇 |
1987年 | 8篇 |
1986年 | 5篇 |
1985年 | 5篇 |
1984年 | 9篇 |
1983年 | 5篇 |
1982年 | 7篇 |
1980年 | 3篇 |
1979年 | 5篇 |
1978年 | 3篇 |
1977年 | 4篇 |
1976年 | 2篇 |
1975年 | 3篇 |
1974年 | 3篇 |
1969年 | 5篇 |
排序方式: 共有953条查询结果,搜索用时 15 毫秒
91.
Mado Vandewoestyne Ph.D. Trees Lepez Ph.D David Van Hoofstat Ph.D. Dieter Deforce Ph.D. 《Journal of forensic sciences》2015,60(3):707-711
In forensics, bloodstains on dark fabrics might be invisible for the naked eye. Although several visualization, presumptive, and confirmatory blood tests have been developed, all have one or more disadvantages, especially on DNA analysis. We report here the use of a visualization assay that can visually detect blood drops up to 1/20 dilution. In this assay, the fabric is placed between two wet filter papers and covered by glass surfaces on both sides. Pressure is applied on the glass surfaces in which bloodstains transfer onto the filter papers through capillary forces. Detected stains can be tested with other more sensitive presumptive blood tests performed on the filter paper. Even more, DNA analysis can be performed on the transferred bloodstains. The presented visualization assay is easy to perform, extremely cheap, requires little hands on time, and does not affect bloodstain pattern analysis. 相似文献
92.
93.
94.
95.
96.
Brian Van Ness 《The Journal of law, medicine & ethics》2008,36(2):292-7, 212
The Human Genome Project showed that there is significant genetic variation within the population. Current research is accumulating large databases that may reveal genetic variations associated with disease or health risks, even if not intended as part of the study design. These incidental findings create legal, ethical, and financial challenges for researchers. Current federal and international guidelines are not adequate. Plans for dealing with incidental findings need to be established in the study design and reviewed and approved by the Institutional Review Board. 相似文献
97.
R D Miller M R Bernstein G J Van Rybroek G J Maier 《The Bulletin of the American Academy of Psychiatry and the Law》1989,17(2):107-119
In December of 1987, the Wisconsin supreme court held that all involuntarily committed mental patients in the state had the right to refuse psychotropic medication unless a court held that they were incompetent to make treatment decisions. The authors studied the effects of this decision in a 165-bed forensic hospital over the first six months after implementation of the decision. They found that 29 percent of patients already on psychotropic medication initially refused further treatment as opposed to 75 percent of newly admitted patients. Of refusers, 32 percent eventually resumed taking medication voluntarily; courts overturned the refusals of all the 51 percent who maintained their refusals, after an average delay of over a month. The length of procedural delays actually increased over the six months of the study as the courts learned of the decision. The authors compare their findings with other reported studies of implementation of right to refuse treatment decisions and discuss differences between the right to refuse treatment for civilly and criminally committed patients. 相似文献
98.
99.
100.
This paper studies aspects of sequential choice (and elimination) through the ‘routewise’ application of choice. (A choice is a mapping of the subsets of a set X into their respective subsets.) This approach sheds some further light on the ‘path-independence’ of choice, as well as on the logical structure of several rationality criteria for choice, as expressed through the properties of the comparison (or preference relation) revealed by a choice. The results bear particular relevance to the theory of collective choice. 相似文献