首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1529篇
  免费   85篇
各国政治   92篇
工人农民   242篇
世界政治   131篇
外交国际关系   84篇
法律   763篇
中国政治   19篇
政治理论   278篇
综合类   5篇
  2023年   19篇
  2022年   12篇
  2021年   13篇
  2020年   42篇
  2019年   61篇
  2018年   80篇
  2017年   81篇
  2016年   81篇
  2015年   54篇
  2014年   50篇
  2013年   223篇
  2012年   53篇
  2011年   52篇
  2010年   39篇
  2009年   54篇
  2008年   48篇
  2007年   64篇
  2006年   51篇
  2005年   51篇
  2004年   57篇
  2003年   46篇
  2002年   46篇
  2001年   18篇
  2000年   27篇
  1999年   17篇
  1998年   15篇
  1997年   19篇
  1996年   20篇
  1995年   12篇
  1994年   17篇
  1993年   12篇
  1992年   13篇
  1991年   19篇
  1990年   13篇
  1989年   10篇
  1988年   9篇
  1987年   8篇
  1986年   16篇
  1985年   14篇
  1984年   10篇
  1983年   11篇
  1982年   12篇
  1981年   7篇
  1980年   8篇
  1979年   4篇
  1978年   5篇
  1977年   7篇
  1975年   4篇
  1974年   4篇
  1970年   2篇
排序方式: 共有1614条查询结果,搜索用时 15 毫秒
101.
102.
103.
Separation of male and female soft tissue depths into discrete groups for craniofacial identification implies that males and females differ enough from each other, with respect to this application, for this distinction to be useful. In this study, previously published soft tissue depth data were analyzed for sex separation. It was found that the variation within each sex was large while the variation between the sexes was small. Often the value of two standard deviations of the measurement for either sex was larger than the difference displayed between the means of each sex. Furthermore, opposite sex overlap in regions defined to be close to the male or female mean were found to be large and the amount of variance explained by sex was small (less than 6% on average). These results indicate that while male and female means at single craniofacial landmarks may differ slightly, and even at statistically significant levels, individual male and female soft tissue depths are often the same or very similar. On average, soft tissue depths of the face do display some sexual dimorphism but it is not marked and of little practical meaning for craniofacial identification where a single individual must be independently considered. Thus, there is little use in separate reporting of data for males and females and data should be combined to increase sample sizes.  相似文献   
104.
Propylene glycol (PG), a widely used solvent and lubricant, is thought to have low toxicity when ingested. Three cases were identified where PG, either alone or in combination with other chemical agents, contributed to death. The decedent in whom PG was the sole agent was a 32-year-old schizophrenic man with cardiomegaly and renal impairment. The blood PG concentration was 4410 mg/L at least 9.5 h following ingestion.  相似文献   
105.
The recent decline, indeed perhaps dismantling, of managed care is sometimes treated as both consequence and cause of the political reempowerment of medical providers, whose professional dominance managed care had challenged. Drawing evidence from Round III of the Community Tracking Study of the Center for Studying Health System Change, this article reviews the politics of four "arenas" of managed care regulation--prompt payment, mandated benefits, external appeals, and financial solvency--and concludes that the power of providers is contingent on patterns of coalition and conflict that differ across the discrete arenas. The zero-sum connotations of the "de" and "re" empowerment of providers under managed care fail to capture the subtlety of providers' search for fresh cultural, economic, and political resources in shifting policy contexts.  相似文献   
106.
Currently in Australia anti-choice protesters' right to freedom of speech and freedom to protest is privileged over a woman's right to privacy and to access a health service safely, free from harassment, intimidation and obstruction. This article considers how this situation is played out daily at one Victorian abortion-providing clinic. The Fertility Control Clinic was thrown into the spotlight after the murder of its security guard by an anti-choice crusader in July 2001. Australian common law appears not to offer women protection from anti-choice protesters. By contrast, United States and Canadian "bubble" legislation sits comfortably with key constitutional rights. It would be a useful development if Australian governments passed legislation to ensure the rights, wellbeing and safety of Australian women accessing health services. Such legislation would be another step away from the misogynistic and androcentric values once central to our legislative framework.  相似文献   
107.
108.
109.
If male workers categorize different groups of women coworkers and, subsequently, treat them differently, the experiences of women from one of these groups would not be indicative of the experiences of women from another group. When this different treatment involves hostile environment sexual harassment of one group, but not the other, then the law must recognize the possibility of "selective sexual harassment." Without this understanding of the nuances of the workplace dynamics, a court could mistake the women of the unharassed group as representing "reasonable women" and the women of the harassed group as simply oversensitive. This paper draws on empirical data to demonstrate such a situation and advocates for a version of the "reasonable victim" standard to facilitate a closer analysis of hostile environment sexual harassment suits.  相似文献   
110.
An unusual fatality secondary to oxycodone in a child is reported. A 2-year-old female child was conveyed to a local hospital after exhibiting signs of rubbing of the mouth and staggering. A hospital toxicological immunoassay screen for drugs of abuse and tricyclic antidepressants was performed on a urine sample and reported as negative. She was discharged and found unresponsive the next morning. She was conveyed to a second hospital in full cardiopulmonary arrest and despite resuscitative efforts, was pronounced dead upon arrival. An autopsy was performed and postmortem specimens were submitted and screened for drugs using mainly chromatographic techniques. Quantitation was achieved by gas chromatography with nitrogen phosphorus detection. Confirmation was performed by gas chromatography/mass spectrometry. Oxycodone was the only drug detected in the following concentrations: heart blood, 1.36 mg/L; gastric contents, 7.33 mg in 33 mL (222.34 mg/L); liver, 0.2 mg/kg; and urine, 47.23 mg/L (47,230 ng/mL). In addition, immunoassay testing of the urine was positive for the opiate class of drugs. This case report demonstrates an unusual cause of death in a young child with emphasis on potential limitation in hospital urine screening tests and the importance of complete forensic toxicological testing in all child deaths.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号