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   3524903篇
  免费   305122篇
  国内免费   14139篇
耳鼻咽喉   47957篇
儿科学   112667篇
妇产科学   92510篇
基础医学   561571篇
口腔科学   93922篇
临床医学   317638篇
内科学   630341篇
皮肤病学   93335篇
神经病学   304051篇
特种医学   138001篇
外国民族医学   490篇
外科学   541757篇
综合类   107824篇
现状与发展   24篇
一般理论   2342篇
预防医学   297469篇
眼科学   80672篇
药学   241819篇
  22篇
中国医学   10472篇
肿瘤学   169280篇
  2021年   55165篇
  2020年   35149篇
  2019年   58173篇
  2018年   71638篇
  2017年   54739篇
  2016年   60516篇
  2015年   74378篇
  2014年   108614篇
  2013年   173720篇
  2012年   99199篇
  2011年   99677篇
  2010年   117937篇
  2009年   122326篇
  2008年   86528篇
  2007年   90169篇
  2006年   100626篇
  2005年   95893篇
  2004年   97298篇
  2003年   87761篇
  2002年   77189篇
  2001年   118202篇
  2000年   111687篇
  1999年   107605篇
  1998年   66665篇
  1997年   64253篇
  1996年   62097篇
  1995年   57533篇
  1994年   51475篇
  1993年   48046篇
  1992年   74252篇
  1991年   69896篇
  1990年   65641篇
  1989年   64432篇
  1988年   59405篇
  1987年   58111篇
  1986年   54662篇
  1985年   54443篇
  1984年   49507篇
  1983年   45080篇
  1982年   42177篇
  1981年   39551篇
  1980年   37241篇
  1979年   40239篇
  1978年   35590篇
  1977年   32287篇
  1976年   29633篇
  1975年   27961篇
  1974年   29024篇
  1973年   28045篇
  1972年   26244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.
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   
105.
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