全文获取类型
收费全文 | 17248篇 |
免费 | 515篇 |
专业分类
各国政治 | 951篇 |
工人农民 | 715篇 |
世界政治 | 1204篇 |
外交国际关系 | 668篇 |
法律 | 10286篇 |
中国共产党 | 5篇 |
中国政治 | 197篇 |
政治理论 | 3575篇 |
综合类 | 162篇 |
出版年
2020年 | 222篇 |
2019年 | 272篇 |
2018年 | 395篇 |
2017年 | 421篇 |
2016年 | 416篇 |
2015年 | 329篇 |
2014年 | 349篇 |
2013年 | 1959篇 |
2012年 | 432篇 |
2011年 | 539篇 |
2010年 | 405篇 |
2009年 | 438篇 |
2008年 | 483篇 |
2007年 | 435篇 |
2006年 | 466篇 |
2005年 | 411篇 |
2004年 | 438篇 |
2003年 | 435篇 |
2002年 | 367篇 |
2001年 | 597篇 |
2000年 | 581篇 |
1999年 | 460篇 |
1998年 | 260篇 |
1997年 | 219篇 |
1996年 | 216篇 |
1995年 | 193篇 |
1994年 | 196篇 |
1993年 | 210篇 |
1992年 | 327篇 |
1991年 | 324篇 |
1990年 | 310篇 |
1989年 | 303篇 |
1988年 | 305篇 |
1987年 | 317篇 |
1986年 | 325篇 |
1985年 | 301篇 |
1984年 | 293篇 |
1983年 | 300篇 |
1982年 | 182篇 |
1981年 | 156篇 |
1980年 | 152篇 |
1979年 | 196篇 |
1978年 | 153篇 |
1977年 | 130篇 |
1976年 | 127篇 |
1975年 | 113篇 |
1974年 | 114篇 |
1973年 | 124篇 |
1972年 | 113篇 |
1968年 | 96篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
51.
Correlation between plasma and bone marrow tricyclic antidepressants has not been studied before. Two groups of rabbits were given 10 and 20 mg of desipramine/kg body weight, respectively. Desipramine was administered to the animals once daily by mouth for 5 days. On the fifth day the animals were sacrificed and blood and bone marrow samples were collected and analyzed using a high performance liquid chromatographic (HPLC) method. Data showed that a correlation exists between bone marrow and blood desipramine. The bone marrow desipramine concentration increased as its blood levels increased. The average ratio of bone marrow to blood desipramine +/- S.D. (standard deviation) in both dosage groups was 37.2 +/- 4.46 with a range of 30.99-44.82. This investigation is promising and shows that bone marrow could be used as an alternative tissue in the absence of a suitable blood sample. 相似文献
52.
The formation of adequate mental health systems within prisons has accelerated as a result of successful class action lawsuits. Our recent national survey questioned all state correctional departments about the existence of standards in each system, compliance with such standards, prevalence of class action lawsuits involving the issue of providing adequate mental health services for inmates, issues related to consent decrees, available mental health resources within the correctional system, and the administrative structure of the mental health system. Our purpose was to identify those factors correlated with certified class action lawsuits involving issues related to mental health services. Twenty-one states were involved in such litigation. Only the presence of psychiatric hospitals operated by the department of corrections correlated with the presence of certified class action lawsuits involving mental health services. Prison systems larger than 15,000 inmates were at higher risk for such litigation. Smaller systems having psychiatric hospitals run by the state mental health agency appeared to be at less risk for such litigation. 相似文献
53.
54.
55.
Comparison of a suspected biter's dental arches with the patterned injury of a bite mark is especially difficult when the bite occurs in an anatomic location with a small radius of curvature or with complex or compound curves. The authors present two case reports in which human skin was used as a template for the reproduction of a bite. In one case the victim's skin was used; in the other, the skin of a anatomically similar person was used. The use of inked dental casts, photography, and transparent overlays significantly reduced the errors common to analysis of bite marks in these highly curved areas. 相似文献
56.
57.
The Department of Defense has taken steps in recent years to improve outcomes for victims of domestic violence who reside on military installations. In 2000, the Defense Task Force on Domestic Violence was established, a military‐civilian group of experts charged with improving the military's effectiveness in addressing domestic violence in the Armed Forces in a variety of areas including offender accountability, coordination between military and civilian communities, and changing the military climate around domestic violence. This article will provide an overview of the Task Force, its work during the past three years, and its recommendations. 相似文献
58.
British constitutional legal discourse is structurally limited in its capacity to capture the complexity of the Good Friday Agreement. Rather than assessing the Agreement in narrow devolutionary terms, it should be seen as a hybrid domestic and international law instrument, making an important contribution to accepted international law norms in relation to self-determination. The Agreement transforms and partly transcends the Northern Ireland conflict by substituting political contestation for violent conflict, and by defining the modalities of conducting that contestation. This analysis complements classical international law perspectives, and opens up the application of legal discourses associated with 'transitional justice' to the legal and political transformation in Northern Ireland. These discourses focus on the problem of reconciling the demands of peace with the imperatives of justice. The Agreement sits squarely in this terrain with its provisions on 'dealing with the past' and 'institutional legacies'. The insights gained here challenge orthodox thinking about conflict-management and the ongoing political process. 相似文献
59.
Recent major shifts in US military thinking, creating a new low-intensity conflict (LIC) doctrine, have resulted already in significant changes in organization, mission definition, force structure and budgetary allocation. These changes have come about because American leadership recognizes that the process of deindustrialization has produced a vulnerable, highly integrated and interdependent global economic system. This system of economic rationalization is susceptible to anti-western disruptions because of the instability produced by rapid social change, a consequence of the competition from the newly industrialized nations. LIC capability is viewed as a necessary means for dealing with disruptions. 相似文献
60.