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   5057356篇
  免费   402460篇
  国内免费   16344篇
耳鼻咽喉   71280篇
儿科学   160906篇
妇产科学   137250篇
基础医学   751884篇
口腔科学   145554篇
临床医学   456634篇
内科学   925513篇
皮肤病学   121519篇
神经病学   422112篇
特种医学   200263篇
外国民族医学   1301篇
外科学   765678篇
综合类   150083篇
现状与发展   24篇
一般理论   2853篇
预防医学   416050篇
眼科学   120577篇
药学   362405篇
  23篇
中国医学   13645篇
肿瘤学   250606篇
  2021年   56642篇
  2019年   59225篇
  2018年   75516篇
  2017年   57974篇
  2016年   64506篇
  2015年   77062篇
  2014年   111684篇
  2013年   177304篇
  2012年   138277篇
  2011年   145134篇
  2010年   129664篇
  2009年   130483篇
  2008年   131930篇
  2007年   141583篇
  2006年   149709篇
  2005年   144382篇
  2004年   145440篇
  2003年   135173篇
  2002年   124790篇
  2001年   196920篇
  2000年   194104篇
  1999年   175142篇
  1998年   75856篇
  1997年   70871篇
  1996年   68606篇
  1995年   63983篇
  1994年   58058篇
  1993年   53936篇
  1992年   130898篇
  1991年   125761篇
  1990年   121118篇
  1989年   118157篇
  1988年   109770篇
  1987年   107516篇
  1986年   102610篇
  1985年   99954篇
  1984年   81292篇
  1983年   71462篇
  1982年   53183篇
  1981年   49021篇
  1980年   46228篇
  1979年   73206篇
  1978年   56743篇
  1977年   49778篇
  1976年   46109篇
  1975年   47058篇
  1974年   53729篇
  1973年   51982篇
  1972年   48978篇
  1971年   45402篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
102.
103.
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   

104.
105.
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   
106.
107.
108.
109.
110.
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