全文获取类型
收费全文 | 256382篇 |
免费 | 22456篇 |
国内免费 | 5130篇 |
专业分类
耳鼻咽喉 | 3467篇 |
儿科学 | 4801篇 |
妇产科学 | 4377篇 |
基础医学 | 20526篇 |
口腔科学 | 7844篇 |
临床医学 | 28694篇 |
内科学 | 24747篇 |
皮肤病学 | 2657篇 |
神经病学 | 12322篇 |
特种医学 | 6294篇 |
外国民族医学 | 13篇 |
外科学 | 24757篇 |
综合类 | 40261篇 |
现状与发展 | 14篇 |
一般理论 | 28篇 |
预防医学 | 38963篇 |
眼科学 | 2266篇 |
药学 | 24289篇 |
445篇 | |
中国医学 | 26839篇 |
肿瘤学 | 10364篇 |
出版年
2024年 | 1079篇 |
2023年 | 5124篇 |
2022年 | 9554篇 |
2021年 | 12663篇 |
2020年 | 12786篇 |
2019年 | 13108篇 |
2018年 | 11749篇 |
2017年 | 10392篇 |
2016年 | 9575篇 |
2015年 | 9087篇 |
2014年 | 18078篇 |
2013年 | 18186篇 |
2012年 | 15989篇 |
2011年 | 16865篇 |
2010年 | 13713篇 |
2009年 | 11848篇 |
2008年 | 11143篇 |
2007年 | 10906篇 |
2006年 | 9428篇 |
2005年 | 7820篇 |
2004年 | 6549篇 |
2003年 | 5648篇 |
2002年 | 4325篇 |
2001年 | 3580篇 |
2000年 | 3157篇 |
1999年 | 2545篇 |
1998年 | 2115篇 |
1997年 | 1841篇 |
1996年 | 1547篇 |
1995年 | 1423篇 |
1994年 | 1272篇 |
1993年 | 1156篇 |
1992年 | 1023篇 |
1991年 | 944篇 |
1990年 | 802篇 |
1989年 | 794篇 |
1988年 | 745篇 |
1987年 | 638篇 |
1986年 | 599篇 |
1985年 | 1882篇 |
1984年 | 2160篇 |
1983年 | 1352篇 |
1982年 | 1789篇 |
1981年 | 1249篇 |
1980年 | 1077篇 |
1979年 | 949篇 |
1978年 | 776篇 |
1977年 | 582篇 |
1976年 | 732篇 |
1975年 | 490篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
141.
142.
《The Indian journal of tuberculosis》2022,69(2):234-237
With the emergence of COVID 19 pandemic, the approach used by Municipal Corporation of Greater Mumbai (MCGM) was based on all guidelines of COVID 19 prepared by Ministry of Health and Family Welfare (MoHFW). However, Mumbai undertook a special innovate model used in the mission Mumbai – Dharavi for COVID 19. Additionally, MCGM undertook a proactive approach of “chasing the virus” with its 4Ts: 1. Tracing 2. Tracking 3. Testing 4. Treating in high-risk slum clusters and it reflects the result of declining the incidence and case fatality due to COVID 19. Establishing public health surge capacities which include active surveillance, contact-tracing and follow-up besides early detection, isolation and management of cases are important steps for fighting the COVID 19 pandemic. Collaborating with all partners and setting up a Task force for establishing clinical management protocols was unmissable. 相似文献
143.
《Revue neurologique》2019,175(9):519-527
Background and purposeHospitals admitting acute strokes should offer access to mechanical thrombectomy (MT), but local organisations are still based on facilities available before MT was proven effective. MT rates and outcomes at population levels are needed to adapt organisations. We evaluated rates of MT and outcomes in inhabitants from the North-of-France (NoF) area.MethodWe prospectively evaluated rates of MT and outcomes of patients at 3 months, good outcomes being defined as a modified Rankin scale (mRS) 0 to 2 or like the pre-stroke mRS.ResultsDuring the study period (2016–2017), 666 patients underwent MT (454, 68.1% associated with intravenous thrombolysis [IVT]). Besides, 1595 other patients received IVT alone. The rate of MT was 81 (95% confidence interval [CI] 72–90) per million inhabitants-year, ranging from 36 to 108 between districts. The rate of IVT was 249 (95% CI 234–264) per million inhabitants-year, ranging from 155 to 268. After 3 months, 279 (41.9%) patients who underwent MT had good outcomes, and 167 (25.1%) had died. Patients living outside the district of Lille where the only MT centre is, were less likely to have good outcomes at 3 months, after adjustment on age, sex, baseline severity, and delay.ConclusionThe rate of MT is one of the highest reported up to now, even in low-rate districts, but outcomes were significantly worse in patients living outside the district of Lille, and this is not only explained by the delay. 相似文献
144.
145.
146.
Mt D. Dbrssy Chockalingam Ramanathan Danesh Ashouri Vajari Yixin Tong Thomas Schlaepfer Volker A. Coenen 《The European journal of neuroscience》2021,53(1):89-113
Deep brain stimulation (DBS) in psychiatric illnesses has been clinically tested over the past 20 years. The clinical application of DBS to the superolateral branch of the medial forebrain bundle in treatment‐resistant depressed patients—one of several targets under investigation—has shown to be promising in a number of uncontrolled open label trials. However, there are remain numerous questions that need to be investigated to understand and optimize the clinical use of DBS in depression, including, for example, the relationship between the symptoms, the biological substrates/projections and the stimulation itself. In the context of precision and customized medicine, the current paper focuses on clinical and experimental research of medial forebrain bundle DBS in depression or in animal models of depression, demonstrating how clinical and scientific progress can work in tandem to test the therapeutic value and investigate the mechanisms of this experimental treatment. As one of the hypotheses is that depression engenders changes in the reward and motivational networks, the review looks at how stimulation of the medial forebrain bundle impacts the dopaminergic system. 相似文献
147.
《The Journal of thoracic and cardiovascular surgery》2023,165(1):149-158.e4
BackgroundCoronary artery bypass grafting (CABG) improves survival in patients with heart failure and severely reduced left ventricular systolic function (LVEF). Limited data exist regarding adverse cardiovascular event rates after CABG in patients with heart failure with midrange ejection fraction (HFmrEF; LVEF > 40% and < 55%).MethodsWe analyzed data on isolated CABG patients from the Veterans Affairs national database (2010-2019). We stratified patients into control (normal LVEF and no heart failure), HFmrEF, and heart failure with reduced LVEF (HFrEF) groups. We compared all-cause mortality and heart failure hospitalization rates between groups with a Cox model and recurrent events analysis, respectively.ResultsIn 6533 veterans, HFmrEF and HFrEF was present in 1715 (26.3%) and 566 (8.6%) respectively; the control group had 4252 (65.1%) patients. HFrEF patients were more likely to have diabetes mellitus (59%), insulin therapy (36%), and previous myocardial infarction (31%). Anemia was more prevalent in patients with HFrEF (49%) as was a lower serum albumin (mean, 3.6 mg/dL). Compared with the control group, a higher risk of death was observed in the HFmrEF (hazard ratio [HR], 1.3 [1.2-1.5)] and HFrEF (HR, 1.5 [1.2-1.7]) groups. HFmrEF patients had the higher risk of myocardial infarction (subdistribution HR, 1.2 [1-1.6]; P = .04). Risk of heart failure hospitalization was higher in patients with HFmrEF (HR, 4.1 [3.5-4.7]) and patients with HFrEF (HR, 7.2 [6.2-8.5]).ConclusionsHeart failure with midrange ejection fraction negatively affects survival after CABG. These patients also experience higher rates myocardial infarction and heart failure hospitalization. 相似文献
148.
阐述当前“人工智能+X”背景下市场对医学信息管理专业人才能力的需求,分析医学信息管理专业人才培养现状,提出从重塑学科人才培养目标、优化课程内容与课程设置、建设“双师型”导师队伍、搭建多方协同共建共享在线平台及设立“政用产学研”联合培养基地等方面探索医学信息管理专业研究生培养模式,以期培养适应人工智能时代发展,具备学科优势特色的高层次、高水平、高质量的复合型、应用型、创新型人才。 相似文献
149.
Megan L. Robbins Robert C. Wright Ana María López Karen Weihs 《Journal of psychosocial oncology》2019,37(2):160-177
AbstractObjectives: 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
150.
Yuan Peng Yuman Li Haiyan Cao Liu Hong Yu Wang Mingxing Xie 《Journal of ultrasound in medicine》2019,38(2):539-544
A pulmonary artery (PA) sling is a very rare congenital cardiovascular anomaly, and only a few studies have reported PA slings in fetuses. The relationship of the PA, aorta, ductus arteriosus, and trachea can be evaluated in the 3‐vessel and 3‐vessel and trachea views during fetal echocardiography. A PA sling can be detected by abnormal positioning of the left PA in relation to the trachea when sweeping from the 3‐vessel view cranially to the 3‐vessel and trachea view. Here we report 3 cases of fetal PA slings and their follow‐ups. Two cases were confirmed by postnatal echocardiography, and the other case was confirmed by a cardiovascular cast after pregnancy termination. We emphasize that the 3‐vessel and 3‐vessel and trachea views are of crucial importance in the prenatal diagnosis of a PA sling. 相似文献