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   3145009篇
  免费   271924篇
  国内免费   13727篇
耳鼻咽喉   43665篇
儿科学   99816篇
妇产科学   81495篇
基础医学   507811篇
口腔科学   84241篇
临床医学   277564篇
内科学   553696篇
皮肤病学   85797篇
神经病学   272794篇
特种医学   125454篇
外国民族医学   361篇
外科学   496959篇
综合类   96618篇
现状与发展   23篇
一般理论   2168篇
预防医学   261237篇
眼科学   71091篇
药学   214526篇
  19篇
中国医学   9200篇
肿瘤学   146125篇
  2021年   54618篇
  2020年   34886篇
  2019年   57832篇
  2018年   70229篇
  2017年   53229篇
  2016年   58809篇
  2015年   73113篇
  2014年   107180篇
  2013年   172235篇
  2012年   84270篇
  2011年   83333篇
  2010年   114272篇
  2009年   119606篇
  2008年   71202篇
  2007年   73246篇
  2006年   84253篇
  2005年   80250篇
  2004年   82228篇
  2003年   73632篇
  2002年   63724篇
  2001年   89292篇
  2000年   81884篇
  1999年   85030篇
  1998年   63467篇
  1997年   61796篇
  1996年   59518篇
  1995年   54949篇
  1994年   49156篇
  1993年   45942篇
  1992年   58590篇
  1991年   55268篇
  1990年   52444篇
  1989年   51837篇
  1988年   48394篇
  1987年   47287篇
  1986年   45330篇
  1985年   45532篇
  1984年   43130篇
  1983年   39945篇
  1982年   39862篇
  1981年   37616篇
  1980年   35572篇
  1979年   35121篇
  1978年   32174篇
  1977年   29724篇
  1976年   27300篇
  1975年   25810篇
  1974年   26317篇
  1973年   25162篇
  1972年   23680篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
111.
112.
113.
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   

114.
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   
115.
116.
117.
118.
119.
120.
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