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   4334137篇
  免费   349924篇
  国内免费   14623篇
耳鼻咽喉   60323篇
儿科学   139513篇
妇产科学   114356篇
基础医学   665127篇
口腔科学   118032篇
临床医学   395603篇
内科学   784270篇
皮肤病学   107819篇
神经病学   368000篇
特种医学   169596篇
外国民族医学   753篇
外科学   655772篇
综合类   121241篇
现状与发展   24篇
一般理论   2635篇
预防医学   356598篇
眼科学   100750篇
药学   307930篇
  21篇
中国医学   11960篇
肿瘤学   218361篇
  2021年   56159篇
  2020年   35916篇
  2019年   58930篇
  2018年   74598篇
  2017年   56822篇
  2016年   62935篇
  2015年   75846篇
  2014年   110144篇
  2013年   175751篇
  2012年   125380篇
  2011年   130201篇
  2010年   126242篇
  2009年   127867篇
  2008年   116137篇
  2007年   123512篇
  2006年   132189篇
  2005年   126274篇
  2004年   127524篇
  2003年   117679篇
  2002年   106895篇
  2001年   166992篇
  2000年   162065篇
  1999年   148726篇
  1998年   71710篇
  1997年   67636篇
  1996年   65654篇
  1995年   61078篇
  1994年   54999篇
  1993年   51030篇
  1992年   106236篇
  1991年   101308篇
  1990年   97093篇
  1989年   94640篇
  1988年   86895篇
  1987年   85142篇
  1986年   80021篇
  1985年   78202篇
  1984年   65103篇
  1983年   57795篇
  1982年   46742篇
  1981年   43421篇
  1980年   40619篇
  1979年   54753篇
  1978年   44426篇
  1977年   39551篇
  1976年   36471篇
  1975年   36496篇
  1974年   39383篇
  1973年   37573篇
  1972年   35273篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
121.
122.
Introduction: Pharmacovigilance is essential to monitoring the safety profiles of authorized medicines. Compared with small-molecule drugs, biological drugs are more complex, more susceptible to structural variability due to manufacturing processes, and have the potential to induce immune-related reactions, underscoring the importance of safety monitoring for these products. Although highly similar to reference products, biosimilars are not expected to be structurally identical. For these reasons, proper reporting of potential adverse drug reactions (ADRs) using distinguishable names and batch numbers is essential for accurate tracing of all biological drugs. To address the need for robust pharmacovigilance, the European Parliament and Council of the European Union provided legislation regarding pharmacovigilance of biologics in 2010.

Areas covered: This narrative review examines the current state of pharmacovigilance for biologics in the European Union (EU) and discusses relevant information on pharmacovigilance of biosimilars, the current EU pharmacovigilance system, and areas that could be improved.

Expert opinion: Although steps have been taken to improve pharmacovigilance of biologics in the EU, several enhancements can still be made, including additional training for healthcare professionals on ADR reporting, the use of 2D barcodes that enhance traceability, and an open discussion of potentially missed opportunities in the pharmacovigilance of biosimilars.  相似文献   

123.
ABSTRACT

This project examined 55 picture books featuring transgender, gender expansive or genderqueer protagonists or narrators published between 2008 and 2018. The purpose of the study was to determine how this genre of children’s literature supports and challenges four gender assumptions: the gender binary, gender essentialism, sex/gender congruency and gender stability. Additionally, this critical analysis explored misgendering within this genre and themes of social rejection and acceptance. Protagonists and narrators were permitted a degree of gender nonconformity, however, the majority of picture books missed opportunities for a more complete exploration of gender possibilities.  相似文献   
124.
125.
126.
127.
128.
129.
130.
Background: Traumatic brain injury (TBI) results in verbal recall deficits and impaired processing of emotion encoded in facial appearance, prosody and the linguistic content of messages. Emotion facilitates memory (emotional memory advantage) for non-brain injured (NBI) individuals but the impact of emotion on verbal recall for linguistically encoded stimuli in TBI has not been explored.

Aims: The purpose of this study was to determine the effects of stimulus emotional content on verbal recall of words and paragraphs in TBI compared to NBI individuals.

Methods and procedures: Six 10-item lists, each with five emotional and five neutral words, and six paragraphs (three emotional, three neutral) were counterbalanced and presented in random order to 20 individuals with TBI and 44 NBI. The number of words from lists and the number of content units from paragraphs were compared for the two groups.

Outcomes and results: The NBI participants recalled more words from the lists and content units from the paragraphs than the individuals with TBI. Both groups recalled significantly more emotional than neutral words. NBI but not TBI participants had significantly greater recall for information in paragraphs with emotional content.

Conclusions: Participants with TBI showed impaired recall of words and paragraph content. Emotion facilitated word and paragraph content recall for neurotypical individuals but emotional memory advantage was limited to words for the TBI participants.  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