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   215356篇
  免费   18099篇
  国内免费   841篇
耳鼻咽喉   3217篇
儿科学   5894篇
妇产科学   4610篇
基础医学   25794篇
口腔科学   6565篇
临床医学   23368篇
内科学   45855篇
皮肤病学   3620篇
神经病学   21177篇
特种医学   7895篇
外国民族医学   13篇
外科学   32164篇
综合类   2792篇
现状与发展   15篇
一般理论   218篇
预防医学   17731篇
眼科学   5299篇
药学   12740篇
  1篇
中国医学   223篇
肿瘤学   15105篇
  2023年   1802篇
  2022年   1682篇
  2021年   3676篇
  2020年   3093篇
  2019年   3607篇
  2018年   4962篇
  2017年   3889篇
  2016年   4482篇
  2015年   5163篇
  2014年   7295篇
  2013年   10646篇
  2012年   12834篇
  2011年   13676篇
  2010年   8538篇
  2009年   8527篇
  2008年   12848篇
  2007年   13421篇
  2006年   13002篇
  2005年   13214篇
  2004年   12450篇
  2003年   11892篇
  2002年   11438篇
  2001年   2427篇
  2000年   2032篇
  1999年   2493篇
  1998年   3000篇
  1997年   2656篇
  1996年   2417篇
  1995年   2099篇
  1994年   1842篇
  1993年   1741篇
  1992年   1629篇
  1991年   1487篇
  1990年   1362篇
  1989年   1311篇
  1988年   1264篇
  1987年   1156篇
  1986年   1215篇
  1985年   1298篇
  1984年   1574篇
  1983年   1485篇
  1982年   1842篇
  1981年   1676篇
  1980年   1581篇
  1979年   1016篇
  1978年   1085篇
  1977年   941篇
  1976年   862篇
  1975年   729篇
  1974年   757篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
2.
Interstitial cystitis/bladder pain syndrome (IC/BPS) and vulvodynia are chronic pain syndromes that appear to be intertwined from the perspectives of embryology, pathology and epidemiology. These associations may account for similar responses to various therapies.  相似文献   
3.
4.
Individuals with sudden unilateral deafness offer a unique opportunity to study plasticity of the binaural auditory system in adult humans. Stimulation of the intact ear results in increased activity in the auditory cortex. However, there are no reports of changes at sub-cortical levels in humans. Therefore, the aim of the present study was to investigate changes in sub-cortical activity immediately before and after the onset of surgically induced unilateral deafness in adult humans. Click-evoked auditory brainstem responses (ABRs) to stimulation of the healthy ear were recorded from ten adults during the course of translabyrinthine surgery for the removal of a unilateral acoustic neuroma. This surgical technique always results in abrupt deafferentation of the affected ear. The results revealed a rapid (within minutes) reduction in latency of wave V (mean pre = 6.55 ms; mean post = 6.15 ms; p < 0.001). A latency reduction was also observed for wave III (mean pre = 4.40 ms; mean post = 4.13 ms; p < 0.001). These reductions in response latency are consistent with functional changes including disinhibition or/and more rapid intra-cellular signalling affecting binaurally sensitive neurons in the central auditory system. The results are highly relevant for improved understanding of putative physiological mechanisms underlying perceptual disorders such as tinnitus and hyperacusis.  相似文献   
5.
6.
7.
BackgroundThe aim of this paper is to assess the current state of quality and outcomes measures being reported for hepatic resections in the recent literature.MethodsMedline and PubMed databases were searched for English language articles published between 1 January 2002 and 30 April 2013. Two examiners reviewed each article and relevant citations for appropriateness of inclusion, which excluded papers of liver donor hepatic resections, repeat hepatectomies or meta-analyses. Data were extracted and summarized by two examiners for analysis.ResultsFifty-five studies were identified with suitable reporting to assess peri-operative mortality in hepatic resections. In only 35% (19/55) of the studies was the follow-up time explicitly stated, and in 47% (26/55) of studies peri-operative mortality was limited to in-hospital or 30 days. The time period in which complications were captured was not explicitly stated in 19 out of 28 studies. The remaining studies only captured complications within 30 days of the index operation (8/28). There was a paucity of quality literature addressing truly patient-centred outcomes.ConclusionQuality outcomes after a hepatic resection are inconsistently reported in the literature. Quality outcome studies for a hepatectomy should report mortality and morbidity at a minimum of 90 days after surgery.  相似文献   
8.
9.
Abstract

Objectives: This study examined word use as an indicator of interpersonal positive reframing in daily conversations of couples coping with breast cancer and as a predictor of stress.

Design: The Electronically Activated Recorder (EAR) and Linguistic Inquiry and Word Count (LIWC) were used to examine naturally occurring word use conceptually linked to positive reframing (positive emotion, negative emotion, and cognitive processing words).

Sample: Fifty-two couples coping with breast cancer.

Methods: Couples wore the EAR, a device participants wear, that audio-recorded over one weekend (>16,000 sound files), and completed self-reports of positive reframing (COPE) and stress (Perceived Stress Scale). LIWC, a software program, measured word use.

Findings: Both partners’ word use (i.e., positive emotion and cognitive processing words) was associated with their own reported positive reframing, and spouses’ word use was also indicative of patients’ positive reframing. Results also revealed that, in general, words indicating positive reframing predicted lower levels of stress.

Conclusions: Findings supported the hypothesis that partners—and particularly spouses of breast cancer patients—may assist each other’s coping by positively reframing the cancer experience and other negative experiences in conversation.  相似文献   
10.
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