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   117750篇
  免费   9865篇
  国内免费   2408篇
耳鼻咽喉   903篇
儿科学   2493篇
妇产科学   1854篇
基础医学   5428篇
口腔科学   5812篇
临床医学   18469篇
内科学   12271篇
皮肤病学   1678篇
神经病学   8575篇
特种医学   3058篇
外国民族医学   26篇
外科学   14794篇
综合类   17755篇
现状与发展   8篇
一般理论   8篇
预防医学   7113篇
眼科学   1597篇
药学   10861篇
  208篇
中国医学   10538篇
肿瘤学   6574篇
  2024年   264篇
  2023年   2183篇
  2022年   2860篇
  2021年   5194篇
  2020年   5467篇
  2019年   4631篇
  2018年   4320篇
  2017年   4534篇
  2016年   4638篇
  2015年   4278篇
  2014年   8375篇
  2013年   11120篇
  2012年   7480篇
  2011年   7976篇
  2010年   6639篇
  2009年   5868篇
  2008年   5520篇
  2007年   5516篇
  2006年   4961篇
  2005年   4142篇
  2004年   3498篇
  2003年   3010篇
  2002年   2527篇
  2001年   2100篇
  2000年   1741篇
  1999年   1449篇
  1998年   1178篇
  1997年   1099篇
  1996年   886篇
  1995年   794篇
  1994年   741篇
  1993年   622篇
  1992年   543篇
  1991年   465篇
  1990年   326篇
  1989年   346篇
  1988年   305篇
  1987年   306篇
  1986年   281篇
  1985年   330篇
  1984年   263篇
  1983年   188篇
  1982年   234篇
  1981年   187篇
  1980年   160篇
  1979年   134篇
  1978年   77篇
  1977年   69篇
  1976年   63篇
  1975年   39篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
61.
Anomalous origin of the left coronary artery from the pulmonary artery (ALCAPA) is a rare congenital condition. It responds well to early diagnosis and treatment, but otherwise the prognosis is poor. We present our case series of 12 patients (mean age, 2 ± 2.58 yr; age range, 2 mo–8 yr), emphasizing the diagnostic process and discussing our surgical results. The diagnosis of ALCAPA should be suspected in infants who have dilated cardiomyopathy with electrocardiographic changes that suggest ischemia, and in older children who have isolated mitral regurgitation. When clinical suspicion is high, the results of 2-dimensional echocardiography combined with color-flow Doppler studies in expert hands can establish the diagnosis, thus avoiding angiography in critically ill infants. The treatment of choice in our patients was transfer and reimplantation of the left coronary artery onto the ascending aorta. There were 2 deaths: both were infants in extremis who underwent emergency surgery. An older child with severe ventricular dysfunction was given mechanical ventricular assistance and then heart transplantation. As of this report, all 10 survivors remained well and asymptomatic.  相似文献   
62.
目的 对比LEEP刀与微波治疗慢性宫颈炎的临床效果.方法 随机选取2013年10月—2015年4月期间,到该院就诊的70例慢性宫颈炎患者为研究对象,在取得患者同意的前提下,随机将患者均分为对照组(采用微波治疗)和观察组(采用LEEP刀治疗),两组患者的人数均为35例,观察并比较两组患者的手术情况、治疗效果等指标. 结果 ①观察组患者的手术时间、阴道流液时间、术中出血量均优于对照组,两组差异有统计学意义(P<0.05);②观察组患者的治疗总有效率为97.14%(34/35),对照组为82.86%(29/35),两组差异有统计学意义(P<0.05).结论 在慢性宫颈炎的治疗中,与传统微波治疗相比,LEEP刀治疗的效果更佳,值得临床推广.  相似文献   
63.
64.
65.
Introduction: Effective treatment of rheumatoid arthritis (RA) requires suppression of the underlying inflammation. Measurement of such inflammation, the disease activity, is mandatory to target treatment and maximize outcomes. However, this is not as straightforward as it may seem.

Areas covered: The many tools developed to measure disease activity in RA, from composite scores and patient-reported outcomes, to laboratory markers and imaging are discussed, with a focus on their utility in guiding therapy and assessing response. The complex issues in measuring disease activity in RA, whether in clinical trials or normal clinical practice, and in the context of national guidelines and recommendations, available time, and resources are considered.

Expert commentary: The key to effective management of RA is the rapid suppression of inflammation, ideally to remission, with maintenance of such remission. The aim is to prevent disability and maximize quality of life. Central to this is the ability to determine disease activity (potentially open to suppression) as opposed to damage (irreversible). A variety of measures are currently available, allowing better assessment of response to treatment. In the future, the development of predictive biomarkers allowing targeting of drugs may revolutionize this field and render the tools of today redundant.  相似文献   

66.
67.
ObjectiveTo systematically review the literature related to the effectiveness of parents’ active involvement during painful interventions for their preterm infants.Data SourcesWe performed a systematic search of PubMed, EMBASE/Ovid, CINAHL, Livivio, and PsycInfo using the keywords “preterm infants,” “pain,” and “parents.”Study SelectionArticles were eligible for inclusion if they were published between 2000 and 2021 and reported randomized controlled trials (RCTs) in which preterm infants underwent painful interventions, and parents were present and actively involved in pain-reducing measures.Data ExtractionWe used the Consolidated Standards of Reporting Trials (CONSORT) checklist for RCTs for data extraction. We assessed methodologic quality using critical appraisal for RCTs according to the Joanna Briggs Institute.Data SynthesisIn total, 22 articles met the inclusion criteria. These articles reported 19 studies focused on kangaroo/skin-to-skin care, one focused on breastfeeding, and two focused on facilitated tucking. The methods used to evaluate pain in the infant varied substantially. Overall, kangaroo/skin-to-skin care and facilitated tucking resulted in clinically and statistically significant decreases in pain. For breastfeeding, effectiveness was linked to a more mature sucking pattern of the preterm infant.ConclusionThe current evidence suggests that involving parents in pain-reducing measures during painful interventions for their preterm infants is beneficial. However, more research is needed for the different methods of involving parents in pain-reducing measures.  相似文献   
68.
肠易激综合征(IBS)是一种常见的功能性疾病,中医病名为"肠郁"。郭朋教授根据IBS生理、病理特点,以疏肝健脾法调和肝脾,辨证施治,取得良好疗效。文章从病因病机、辨证论治及经典案例介绍等几个方面对郭教授治疗IBS经验进行系统阐述,以期为中医药治疗IBS提供理论和方法学参考。  相似文献   
69.
经脉包括经(气)络和血(脉)络,清代周学海《读医随笔》将气络末端称为"气之细络",脉络末端称为"血之细络"。心之气络涵盖心脏起搏与传导系统等广泛调控机制,心之脉络涵盖冠状动脉循环系统,心之气络与脉络相互协调,营卫相偕而行,共同维持心脏正常功能。各种致病因素导致营卫异常而发为心律失常,基于脉络学说营卫理论"损其心者,调其营卫"(《难经·十四难》)治疗原则指导心律失常辨证论治,同时充分结合现代致病因素和致病特点,分别选用调节卫气营血之方药,标本兼治,以期为临床诊疗提供有益借鉴。  相似文献   
70.
笔者根据现代临床子宫内膜的病理演变过程结合中医“异病同治”理念,提出“子宫内膜功能亢进性疾病”概念,涵盖5种常见的子宫内膜疾病:无排卵性异常子宫出血(Abnormal Uterine Bleeding Ovulatory dysfunction,AUB-O),子宫内膜息肉(Endometrial Polyp,EP),子宫内膜异位症(Endometriosis,EMs),子宫腺肌病(Adenomyosis,AM),子宫内膜癌(Endometrial Carcinoma,EC)。基于文献的汇总,分析得到此类疾病的子宫内膜病理演变与中医病因病机的关联性,为寻找关键通路、创新性治疗此类疾病提供了重要的参考方向,对深化中医妇科学常见疾病的共性病因病机提供了理论依据和探索思路。  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