全文获取类型
收费全文 | 5550篇 |
免费 | 100篇 |
专业分类
各国政治 | 221篇 |
工人农民 | 154篇 |
世界政治 | 296篇 |
外交国际关系 | 156篇 |
法律 | 4098篇 |
中国政治 | 37篇 |
政治理论 | 636篇 |
综合类 | 52篇 |
出版年
2020年 | 61篇 |
2019年 | 56篇 |
2018年 | 76篇 |
2017年 | 75篇 |
2016年 | 103篇 |
2015年 | 51篇 |
2014年 | 88篇 |
2013年 | 425篇 |
2012年 | 128篇 |
2011年 | 178篇 |
2010年 | 110篇 |
2009年 | 95篇 |
2008年 | 152篇 |
2007年 | 168篇 |
2006年 | 158篇 |
2005年 | 139篇 |
2004年 | 168篇 |
2003年 | 162篇 |
2002年 | 142篇 |
2001年 | 278篇 |
2000年 | 236篇 |
1999年 | 159篇 |
1998年 | 45篇 |
1995年 | 34篇 |
1994年 | 38篇 |
1993年 | 48篇 |
1992年 | 113篇 |
1991年 | 139篇 |
1990年 | 131篇 |
1989年 | 160篇 |
1988年 | 165篇 |
1987年 | 148篇 |
1986年 | 139篇 |
1985年 | 129篇 |
1984年 | 97篇 |
1983年 | 93篇 |
1982年 | 42篇 |
1981年 | 49篇 |
1979年 | 55篇 |
1978年 | 48篇 |
1977年 | 45篇 |
1976年 | 40篇 |
1975年 | 55篇 |
1974年 | 60篇 |
1973年 | 63篇 |
1972年 | 61篇 |
1971年 | 52篇 |
1970年 | 52篇 |
1969年 | 48篇 |
1968年 | 42篇 |
排序方式: 共有5650条查询结果,搜索用时 15 毫秒
31.
N C Martin A A Pirie L V Ford C L Callaghan K McTurk D Lucy D G Scrimger 《Science & justice》2006,46(3):179-184
In the forensic science laboratory, the recovery of spermatozoa from vaginal swabs, or vaginal cells from penile swabs, can help determine if sexual intercourse may have taken place. There are several methods used to recover spermatozoa and cells from the swabs before visualisation on a microscope slide and most of these methods use water. Phosphate buffered saline (PBS) is a non-toxic solution used in many biological laboratories. Unlike water, PBS prevents cells rupturing or shrivelling up due to osmosis. This study demonstrates that PBS can be used for the extraction of spermatozoa and cells from swabs and that PBS does not affect subsequent DNA profiling. 相似文献
32.
33.
Presents forensic medical characteristics of the specific features of stabbed and cut injuries of human skin and jersey. Suggests a complex of signs that will help determine some structural parameters of a knife blade and the conditions of its interaction with the injured site of human body. 相似文献
34.
We consider the problem of drawing inferences within a legal framework when a person is a suspect for two separate offences. Although we are primarily concerned with scientific evidence the issue inevitably arises as to how that evidence interacts with other, non-scientific evidence. We show that, in this particular context, the evidence can be conveniently classified into three categories that concern, respectively: the first crime only; the second crime only; and evidence that relates to similarities between the two crimes. Two case examples are considered and we consider DNA, fibres and eyewitness evidence. These are viewed from the perspective of a prosecutor who has to decide whether or not to charge a suspect with one or both crimes. Graphical sensivity analyses are presented which have features that are not intuitively obvious. 相似文献
35.
California is now in its 11th year of mandatory child custody mediation, with a current yearly case volume statewide estimated at 65,494. This article profiles the variations in programs and mediation styles in 56 of the state's 58 Superior Courts. Two research studies provide the basis for the information on program structures, case activity, procedures, agreement formats, recommendations, facilities, security, and fees. 相似文献
36.
Although physical punishment has been studied for decades, there are gaps in the literature regarding frequently used form, context, and cross cultural differences. A comparison was made using 227 college students in the United States and Japan, who were presented with four scenarios and surveyed regarding attitudes toward physical punishment, perceptions of appropriate discipline methods, and past experience with physical punishment. Japanese and U.S. respondents reported similar personal experience with physical punishment (Japanese 86%, U.S. 91%). However, U.S. respondents reported a higher likelihood of being hit with an object than did Japanese respondents. For U.S. respondents, the bottom and the hand were the top two sites on the body used for physical punishment, whereas the head and the face were the top two places for the Japanese sample. Unlike U.S. respondents, type of child misbehavior was found to have an impact on Japanese respondents’ views on the appropriate discipline method. 相似文献
37.
G A Grigor'ev V A Lopatin V I Makarov A L Fedorovtsev 《Sudebno-meditsinskaia ekspertiza》1990,33(1):17-18
In this article a practical case is described when gunshot directions and position of a victim's body at the moment of each shot were determined by natural simulation using an LG-78 laser (made in the form of a gun). 相似文献
38.
39.
V P Poluianov 《Sudebno-meditsinskaia ekspertiza》1990,33(4):34-36
The analysis of naphthenic acid revealed that they may be used for tin detection in the cadaveric material due to their high complex-forming ability. Method of extraction-atomic absorption tin determination in human organs was developed on the basis of naphthenic acid use. Modified method which differs from the common one by higher sensitivity and selectivity is presented. 相似文献
40.