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   3517593篇
  免费   296441篇
  国内免费   16042篇
耳鼻咽喉   47627篇
儿科学   112217篇
妇产科学   91758篇
基础医学   559901篇
口腔科学   95677篇
临床医学   324135篇
内科学   621994篇
皮肤病学   91521篇
神经病学   302962篇
特种医学   135663篇
外国民族医学   392篇
外科学   532740篇
综合类   106505篇
现状与发展   23篇
一般理论   2302篇
预防医学   305006篇
眼科学   79746篇
药学   241561篇
  27篇
中国医学   10570篇
肿瘤学   167749篇
  2021年   56121篇
  2020年   35697篇
  2019年   58865篇
  2018年   72744篇
  2017年   55359篇
  2016年   60983篇
  2015年   75048篇
  2014年   109580篇
  2013年   175256篇
  2012年   101453篇
  2011年   102836篇
  2010年   120007篇
  2009年   123206篇
  2008年   88135篇
  2007年   91563篇
  2006年   101742篇
  2005年   96817篇
  2004年   97678篇
  2003年   87856篇
  2002年   77340篇
  2001年   107475篇
  2000年   100804篇
  1999年   99545篇
  1998年   65780篇
  1997年   63612篇
  1996年   61270篇
  1995年   56881篇
  1994年   51031篇
  1993年   47604篇
  1992年   70781篇
  1991年   67897篇
  1990年   64441篇
  1989年   62814篇
  1988年   58404篇
  1987年   57002篇
  1986年   54413篇
  1985年   54281篇
  1984年   49258篇
  1983年   44877篇
  1982年   42018篇
  1981年   39598篇
  1980年   37234篇
  1979年   40764篇
  1978年   35921篇
  1977年   32469篇
  1976年   30312篇
  1975年   28545篇
  1974年   30021篇
  1973年   28913篇
  1972年   27058篇
排序方式: 共有10000条查询结果,搜索用时 31 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