全文获取类型
收费全文 | 693篇 |
免费 | 16篇 |
专业分类
各国政治 | 38篇 |
工人农民 | 23篇 |
世界政治 | 51篇 |
外交国际关系 | 39篇 |
法律 | 468篇 |
中国政治 | 10篇 |
政治理论 | 78篇 |
综合类 | 2篇 |
出版年
2023年 | 4篇 |
2022年 | 4篇 |
2020年 | 11篇 |
2019年 | 17篇 |
2018年 | 15篇 |
2017年 | 13篇 |
2016年 | 29篇 |
2015年 | 13篇 |
2014年 | 15篇 |
2013年 | 80篇 |
2012年 | 20篇 |
2011年 | 20篇 |
2010年 | 11篇 |
2009年 | 20篇 |
2008年 | 17篇 |
2007年 | 22篇 |
2006年 | 13篇 |
2005年 | 41篇 |
2004年 | 30篇 |
2003年 | 13篇 |
2002年 | 13篇 |
2001年 | 49篇 |
2000年 | 26篇 |
1999年 | 32篇 |
1998年 | 25篇 |
1997年 | 12篇 |
1996年 | 6篇 |
1995年 | 8篇 |
1994年 | 5篇 |
1993年 | 5篇 |
1992年 | 11篇 |
1991年 | 9篇 |
1990年 | 6篇 |
1989年 | 9篇 |
1988年 | 7篇 |
1987年 | 10篇 |
1986年 | 5篇 |
1985年 | 6篇 |
1984年 | 8篇 |
1983年 | 9篇 |
1982年 | 3篇 |
1981年 | 10篇 |
1980年 | 4篇 |
1979年 | 7篇 |
1977年 | 2篇 |
1976年 | 2篇 |
1974年 | 3篇 |
1973年 | 2篇 |
1970年 | 2篇 |
1967年 | 2篇 |
排序方式: 共有709条查询结果,搜索用时 15 毫秒
71.
72.
Investigating the Postmortem Molecular Biology of Cartilage and its Potential Forensic Applications
下载免费PDF全文
![点击此处可从《Journal of forensic sciences》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Shawna N. Bolton M.Sc. Michael P. Whitehead Ph.D. Jayesh Dudhia Ph.D. Timothy C. Baldwin Ph.D. Raul Sutton Ph.D. 《Journal of forensic sciences》2015,60(4):1061-1067
This study investigated the postmortem molecular changes that articular cartilage undergoes following burial. Fresh pig trotters were interred in 30‐cm‐deep graves at two distinct locations exhibiting dissimilar soil environments for up to 42 days. Extracts of the metacarpophalangeal (MCP) and metatarsophalangeal (MTP) joint cartilage from trotters disinterred weekly over 6 weeks were analyzed by Western blot against the monoclonal antibody 2‐B‐6 to assess aggrecan degradation. In both soil conditions, aggrecan degradation by‐products of decreasing molecular size and complexity were observed up to 21 days postmortem. Degradation products were undetected after this time and coincided with MCP/MTP joint exposure to the soil environment. These results show that cartilage proteoglycans undergo an ordered molecular breakdown, the analysis of which may have forensic applications. This model may prove useful for use as a human model and for forensic investigations concerning crimes against animals and the mortality of endangered species. 相似文献
73.
Occasionally, partial calvariae of hydrocephalic calves are found in forensic contexts and mistakenly identified as human. Such specimens can be properly identified through immunological assessment of associated soft tissue, microscopic analysis of associated hair, and morphological comparison with documented museum specimens. Morphological comparison should focus on the form of the occiput, supraorbital grooves, and bulbous vault and presence of coronal processes. 相似文献
74.
75.
76.
The literature on age estimation from the structure of adult human teeth is reviewed. Several anatomic changes of teeth have been shown to be valuable in age determination, but there is still controversy concerning the accuracy of cemental annulation. It is believed that improvements in age estimation can be made using direct measurement rather than scoring systems. 相似文献
77.
78.
79.
80.
Ralph Segman David A. Tansik Richard B. Block Paul Brockman David S. Bushnell Richard L. Chapman M. Del Delabarre Thomas M. Jacobius F. Timothy Janis Kenneth A. Kovaly Clifford E. Lanham George F. Linsteadt William Marcuse Sally A. Rood David A. Tansik Francis W. Wolek Paul R. Wylie 《The Journal of Technology Transfer》1990,15(4):4-4
Editorial Advisory Board 相似文献