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   282篇
  免费   11篇
各国政治   28篇
工人农民   31篇
世界政治   19篇
外交国际关系   12篇
法律   155篇
中国政治   7篇
政治理论   40篇
综合类   1篇
  2024年   2篇
  2023年   6篇
  2022年   3篇
  2021年   5篇
  2020年   12篇
  2019年   19篇
  2018年   12篇
  2017年   21篇
  2016年   11篇
  2015年   8篇
  2014年   14篇
  2013年   38篇
  2012年   9篇
  2011年   11篇
  2010年   6篇
  2009年   5篇
  2008年   14篇
  2007年   6篇
  2006年   19篇
  2005年   10篇
  2004年   14篇
  2003年   9篇
  2002年   10篇
  2001年   3篇
  2000年   1篇
  1999年   4篇
  1998年   2篇
  1997年   1篇
  1996年   1篇
  1994年   5篇
  1991年   1篇
  1987年   1篇
  1986年   1篇
  1985年   2篇
  1983年   2篇
  1980年   1篇
  1979年   1篇
  1978年   1篇
  1974年   1篇
  1968年   1篇
排序方式: 共有293条查询结果,搜索用时 15 毫秒
191.
192.
193.
This article suggests measures that should be taken to ensure, as much as possible, the safety of victims of domestic violence. Because victims and perpetrators of domestic violence will inevitably be attendees at parent education programs, such programs must be sensitive to the safety concerns of these victims. Only when victims of domestic violence are safe will their children be safe and able to benefit from what their parents learn at these education programs. This article concludes that, by weaving common-sense logistical, administrative, and curricular recommendations into the fabric of every parent education program, the safety of victims and children will be prioritized as it must be, while all attendees still receive the maximum benefit from these valuable programs.  相似文献   
194.
195.
196.
197.
198.
199.
200.
Hair testing for drugs of abuse is performed in Lombardy by eleven analytical laboratories accredited for forensic purposes, the most frequent purposes being driving license regranting and workplace drug testing. Individuals undergoing hair testing for these purposes can choose the laboratory in which the analyses have to be carried out. The aim of our study was to perform an interlaboratory exercise in order to verify the level of standardization of hair testing for drugs of abuse in these accredited laboratories; nine out of the eleven laboratories participated in this exercise. Sixteen hair strands coming from different subjects were longitudinally divided in 3-4 aliquots and distributed to participating laboratories, which were requested to apply their routine methods. All the participants analyzed opiates (morphine and 6-acetylmorphine) and cocainics (cocaine and benzoylecgonine) while only six analyzed methadone and amphetamines (amphetamine, methamphetamine, MDMA, MDA and MDEA) and five Δ(9)-tetrahydrocannabinol (THC). The majority of the participants (seven labs) performed acidic hydrolysis to extract the drugs from the hair and analysis by GC-MS, while two labs used LC-MS/MS. Eight laboratories performed initial screening tests by Enzyme Multiplied Immunoassay Technique (EMIT), Enzyme-linked Immunosorbent Assay (ELISA) or Cloned Enzyme Donor Immunoassay (CEDIA). Results demonstrated a good qualitative performance for all the participants, since no false positive results were reported by any of them. Quantitative data were quite scattered, but less in samples with low concentrations of analytes than in those with higher concentrations. Results from this first regional interlaboratory exercise show that, on the one hand, individuals undergoing hair testing would have obtained the same qualitative results in any of the nine laboratories. On the other hand, the scatter in quantitative results could cause some inequalities if any interpretation of the data is required.  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