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   3237605篇
  免费   280490篇
  国内免费   13740篇
耳鼻咽喉   44378篇
儿科学   104069篇
妇产科学   83040篇
基础医学   522813篇
口腔科学   87192篇
临床医学   292534篇
内科学   566365篇
皮肤病学   88516篇
神经病学   279801篇
特种医学   127726篇
外国民族医学   329篇
外科学   502532篇
综合类   100755篇
现状与发展   23篇
一般理论   2266篇
预防医学   274986篇
眼科学   74066篇
药学   220876篇
  23篇
中国医学   9319篇
肿瘤学   150226篇
  2021年   54944篇
  2020年   35085篇
  2019年   58047篇
  2018年   70937篇
  2017年   54105篇
  2016年   59726篇
  2015年   73856篇
  2014年   108056篇
  2013年   173359篇
  2012年   87434篇
  2011年   87003篇
  2010年   115595篇
  2009年   120236篇
  2008年   73986篇
  2007年   76187篇
  2006年   87247篇
  2005年   82522篇
  2004年   84700篇
  2003年   75729篇
  2002年   65402篇
  2001年   94541篇
  2000年   87055篇
  1999年   88767篇
  1998年   64331篇
  1997年   62386篇
  1996年   60139篇
  1995年   55695篇
  1994年   49954篇
  1993年   46522篇
  1992年   62400篇
  1991年   59524篇
  1990年   56618篇
  1989年   55999篇
  1988年   51660篇
  1987年   51071篇
  1986年   48174篇
  1985年   48700篇
  1984年   45322篇
  1983年   41576篇
  1982年   40712篇
  1981年   38505篇
  1980年   36220篇
  1979年   37100篇
  1978年   33781篇
  1977年   30972篇
  1976年   28482篇
  1975年   26828篇
  1974年   27596篇
  1973年   26550篇
  1972年   24665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