全文获取类型
收费全文 | 461篇 |
免费 | 13篇 |
专业分类
各国政治 | 27篇 |
工人农民 | 21篇 |
世界政治 | 61篇 |
外交国际关系 | 32篇 |
法律 | 203篇 |
中国政治 | 3篇 |
政治理论 | 114篇 |
综合类 | 13篇 |
出版年
2023年 | 2篇 |
2021年 | 3篇 |
2020年 | 7篇 |
2019年 | 17篇 |
2018年 | 10篇 |
2017年 | 12篇 |
2016年 | 18篇 |
2015年 | 8篇 |
2014年 | 12篇 |
2013年 | 89篇 |
2012年 | 15篇 |
2011年 | 12篇 |
2010年 | 9篇 |
2009年 | 9篇 |
2008年 | 24篇 |
2007年 | 14篇 |
2006年 | 15篇 |
2005年 | 7篇 |
2004年 | 18篇 |
2003年 | 14篇 |
2002年 | 10篇 |
2001年 | 7篇 |
2000年 | 10篇 |
1999年 | 4篇 |
1998年 | 8篇 |
1997年 | 9篇 |
1996年 | 4篇 |
1995年 | 5篇 |
1994年 | 8篇 |
1993年 | 9篇 |
1992年 | 5篇 |
1991年 | 5篇 |
1990年 | 3篇 |
1989年 | 4篇 |
1988年 | 3篇 |
1987年 | 8篇 |
1986年 | 5篇 |
1985年 | 5篇 |
1984年 | 5篇 |
1983年 | 5篇 |
1982年 | 6篇 |
1981年 | 5篇 |
1980年 | 6篇 |
1978年 | 2篇 |
1977年 | 3篇 |
1974年 | 2篇 |
1973年 | 2篇 |
1970年 | 2篇 |
1968年 | 2篇 |
1966年 | 1篇 |
排序方式: 共有474条查询结果,搜索用时 8 毫秒
111.
Different diseases of and trauma to the central nervous system (CNS), as well as their consequences are common causes of death and therefore it is important to examine the CNS appropriately in forensic autopsy, bearing in mind that the site of the disease is often as crucial as its nature. The CNS is a complex organ and its examination requires special methods and knowledge and often consultation with a neuropathologist. The prerequisite for the proper examination is correct handling and processing of the CNS. Because of its soft consistency fixation of the CNS in toto before detailed macroscopic analysis is recommended but guidance for an expedited limited examination is also given. The key features to which attention should be paid during the removal and later macroscopic examination of the CNS are described. Processing CNS for microscopy also requires special techniques and in addition to the routine stains both special histological and selected immunohistochemical stainings are often needed to reach the correct diagnosis. 相似文献
112.
In capillary gel electrophoresis (CE), changing run conditions such as temperature can result in minor variations in the size determination of an allele. These effects are caused by secondary structure differences that can occur between the amplified sample and the internal standard. The type of method chosen to generate the sizing curve in STR analysis can influence the relationship between estimated allele size and temperature. To better understand the effects of temperature and sizing method on the reproducibility of DNA migration, two fluorescently labeled allelic ladders, CTTv and Y-PLEX 6 were analyzed using the ABI Prism 310 Genetic Analyzer. The default method on the Genetic Analyzer utilizes an electrophoretic temperature of 60 degrees C and a Local Southern method to generate a sizing curve from the fragment migration times of the internal lane standard. In this work, electrophoresis was conducted at 35-70 degrees C using the commercially available POP 4 buffer at pH 8 and two sizing methods, Global Southern and Local Southern, were compared. The slopes of the regression line between estimated allele size and temperature, using either sizing method, were measured in order to demonstrate the temperature sensitivity of migration time and the importance of the operator-chosen method. Our results indicate that the Global Southern method is a better choice in situations where temperature fluctuations can occur. In addition, the temperature dependence of the DNA size estimates using the POP 4 system were compared to results obtained using an experimental buffer consisting of 3% hydroxyethylcellulose at pH 11. These results demonstrate that secondary structure effects are minimized at an elevated pH, increasing the precision of size estimates obtained. 相似文献
113.
114.
115.
116.
Graham Maddox 《澳大利亚政治与历史杂志》2003,49(3):398-411
This paper deals with some of the religious elements in the responses to the terrorist attacks. It criticises some initial Christian responses (in America) as well as George Bush (Jnr)'s self-asserted Christian credentials. The conjunction between business-friendly forms of religion and the religious cloak over a right-wing political stance is presented as an aspect of Bush's "crusade". The paper surveys the history of the constitutional separation of church and state and the emergence of a republican tradition which had pretensions to displace the "moral haughtiness" and insolence of American religiosity. But the "faith-based" legislation favoured by Bush has prevailed in the general judgementalism of the administration and in the "security measures" and pro-corporate legislation enacted in 2001 and 2002. 相似文献
117.
The distinctive relationship between bureaucrats and politicians in Britain has been much noted around the world and often used a model by reformers. However, both Conservative and Labour governments have displayed dissatisfaction with the bureaucracy and have made important changes in the "Whitehall model." Some of these changes have reduced the degree to which British politicians have been unusually dependent on a career bureaucracy that is insulated from partisan politics. 相似文献
118.
This article describes the reforms to the functions of central government in New Zealand that have been introduced since 1985. It sketches the political and economic situation which motivated the changes to the systems of public management. Some of the theoretical influences that provided insights to the advice given to the government by its officials are noted. The essential elements of the system are described briefly. The results are summarized in terms of how the ideas were implemented, the extent of their acceptance, the impact on managerial behavior, and the effects on government in terms of the objectives that were originally set out. Some tentative suggestions are made regarding the messages that might be drawn from the New Zealand experience that are relevant to the reforms of the government of the United States. 相似文献
119.
Adolescents’ defending behaviors in school bullying situations is likely determined by individual characteristics, social status variables, and classroom/school contextual factors operating simultaneously in the peer ecology. However, there is little research on defending behavior that utilizes this multilevel approach. This study investigated how students’ willingness to defend victims of bullying was affected by feelings of empathy, perceived popularity, and classroom-level perceived prosocial norms. Participants were 1373 adolescents (40% girls, Mage: 14?yrs) from 54 classrooms in six middle schools in South Korea. These youth reported on their feelings of empathy and how prosocial they perceived their classmates to be. Peer-ratings and peer nominations were used to estimate defending behaviors and which students were perceived as popular. Multilevel analyses showed that participants were more likely to defend victims when they had greater empathy and perceived popularity and when classroom-level prosocial norms were higher. The findings have implications for interventions to reduce school bullying and for studying defending behavior in multiple cultural contexts. 相似文献
120.