全文获取类型
收费全文 | 485篇 |
免费 | 14篇 |
专业分类
各国政治 | 25篇 |
工人农民 | 9篇 |
世界政治 | 50篇 |
外交国际关系 | 33篇 |
法律 | 201篇 |
中国政治 | 4篇 |
政治理论 | 168篇 |
综合类 | 9篇 |
出版年
2023年 | 3篇 |
2022年 | 4篇 |
2021年 | 2篇 |
2020年 | 7篇 |
2019年 | 6篇 |
2018年 | 6篇 |
2017年 | 18篇 |
2016年 | 5篇 |
2015年 | 8篇 |
2014年 | 6篇 |
2013年 | 96篇 |
2012年 | 11篇 |
2011年 | 15篇 |
2010年 | 7篇 |
2009年 | 14篇 |
2008年 | 21篇 |
2007年 | 18篇 |
2006年 | 13篇 |
2005年 | 17篇 |
2004年 | 21篇 |
2003年 | 19篇 |
2002年 | 10篇 |
2001年 | 10篇 |
2000年 | 11篇 |
1999年 | 8篇 |
1998年 | 12篇 |
1997年 | 8篇 |
1996年 | 7篇 |
1995年 | 11篇 |
1994年 | 13篇 |
1993年 | 7篇 |
1992年 | 7篇 |
1991年 | 4篇 |
1990年 | 7篇 |
1989年 | 4篇 |
1988年 | 5篇 |
1987年 | 4篇 |
1986年 | 4篇 |
1985年 | 10篇 |
1984年 | 5篇 |
1983年 | 8篇 |
1982年 | 3篇 |
1981年 | 10篇 |
1979年 | 2篇 |
1978年 | 4篇 |
1976年 | 1篇 |
1973年 | 1篇 |
1972年 | 3篇 |
1971年 | 2篇 |
1968年 | 1篇 |
排序方式: 共有499条查询结果,搜索用时 15 毫秒
121.
122.
The characterization of inter-species variation in bone mineral (b-HAP) is of relevance to forensic science and archaeology, but has not previously been widely explored. Results of an investigation into unheated bone mineral and behavior of bone upon heating for 12 animal species (including human) demonstrate that b-HAP characteristics, quantitatively measured using X-ray diffraction (XRD) analysis, exhibit significant inter-species variation. Human bone was found to be significantly different to all other species in terms of b-HAP lattice parameter values from unheated and heated bone and in terms of recrystallization behavior of b-HAP upon heating bone to 600°C. The amounts of b-HAP thermal decomposition products were also significantly different for human bone heated to 1400°C compared to those obtained for most other species. Therefore, there is potential for the development of an XRD-based method of species identification, particularly one that distinguishes human from non-human bone. 相似文献
123.
Vacuum metal deposition (VMD) is a highly sensitive technique originally introduced for detecting latent fingermarks on smooth non-porous surfaces such as carrier bags, plastics and glass. The current study explores whether VMD can be used in the examination of clothing from physical and sexual assault cases in order to visualise identifiable fingermark ridge detail and/or palmar flexion crease detail, thus allowing potential areas to be indicated for DNA swabbing and/or to determine the sequence of events. Four different fabrics were utilised during this study - nylon, polyester, polycotton and cotton, along with 15 donors who ranged in their age and propensity to leave fingermarks, from good to medium to poor as determined by results obtained from test runs using paper and plastic carrier bags processed with VMD. Once samples were collected they were kept for a determined time (1, 2, 3, 4, 5, 6, 7, 14, 21 or 28 days) and then treated using the gold/zinc metal VMD process. From the results, it appears that greater ridge detail is visible on the smoother non-porous fabrics, such as nylon whereas on rougher porous fabrics, such as cotton, only empty prints and impressions, rather than any ridge details, were visible. All fabrics did however allow the development of touch marks that could be targeted for DNA taping thus potentially leading to a DNA profile and possible identification of a suspect. 相似文献
124.
125.
Keith Griffin 《Third world quarterly》2013,34(3):978-1001
126.
Health Systems Agencies (HSAs) were mandated to include representation of the community, broadly conceived. The implicit intention of the law was to include consumers as important and co-equal participants with providers in health planning. This paper is an examination of consumer participation in one ESA. Contrary to expectations derived from the literature, citizens in this HSA exercised independent judgment regarding the major issue to confront them. We conclude his was a function of the following: talents and skills of the consumer members; natural interest in health care policy by consumer board members, sympathetic and supportive provider board members; and the homogenous character of the population in the region served. 相似文献
127.
128.
129.
Shelley Keith 《American Journal of Criminal Justice》2018,43(1):67-84
School bullying victimization represents an important type of strain (or stressful event) experienced by individuals because it usually occurs frequently, over a long period of time, and is an intentional violation against another person. The current study utilizes the 2009 School Crime Supplement (SCS) of the National Crime Victimization Survey (NCVS) to assess the effect of bullying victimization on avoidance behaviors and carrying weapons to school. This study also examines how bullying victimization affects fear and whether this emotion mediates the relationship between victimization and outcomes. As expected, traditional bullying and cyberbullying increase the likelihood of fear. In addition, traditional bullying and cyberbullying victimization increase the likelihood of avoidance behaviors and bringing a weapon to school. Contrary to expectations, fear did not mediate the relationship between bullying and coping behaviors. 相似文献
130.
Nondermatomal somatosensory deficits (NDSDs) are large sensory deficits not conforming to dermatomal/root territories, and no structural pathology accounts for them. They can be very mild or very dense, highly variable, or extremely fixed over time and may be very disabling. It is now accepted by mainstream pain science that they are the product of a central neurophysiological phenomenon. We demonstrated in this paper through literature review and through multiple clinical cases that NDSDs (a) have a psychobiological substrate at the level of the central nervous system, (b) are very frequently associated with chronic pain and/or psychotraumatic experiences, (c) occur very frequently in the context of conversion disorder, but (d) can also occur in the absence of conversion disorders, (e) can be superimposed on structural neurological deficits, and (f) respond positively, or at least in part, to sodium amobarbital (commonly referred to as the “truth serum”). 相似文献