全文获取类型
收费全文 | 68245篇 |
免费 | 8800篇 |
国内免费 | 1465篇 |
专业分类
耳鼻咽喉 | 253篇 |
儿科学 | 1351篇 |
妇产科学 | 874篇 |
基础医学 | 3693篇 |
口腔科学 | 2860篇 |
临床医学 | 13126篇 |
内科学 | 7213篇 |
皮肤病学 | 950篇 |
神经病学 | 3138篇 |
特种医学 | 1063篇 |
外国民族医学 | 10篇 |
外科学 | 6015篇 |
综合类 | 11158篇 |
现状与发展 | 7篇 |
一般理论 | 29篇 |
预防医学 | 8629篇 |
眼科学 | 873篇 |
药学 | 7891篇 |
535篇 | |
中国医学 | 5446篇 |
肿瘤学 | 3396篇 |
出版年
2024年 | 235篇 |
2023年 | 1568篇 |
2022年 | 2330篇 |
2021年 | 3908篇 |
2020年 | 4434篇 |
2019年 | 3456篇 |
2018年 | 3177篇 |
2017年 | 3466篇 |
2016年 | 3464篇 |
2015年 | 3048篇 |
2014年 | 5123篇 |
2013年 | 6107篇 |
2012年 | 4284篇 |
2011年 | 4434篇 |
2010年 | 3432篇 |
2009年 | 3222篇 |
2008年 | 3094篇 |
2007年 | 3149篇 |
2006年 | 2679篇 |
2005年 | 2228篇 |
2004年 | 1887篇 |
2003年 | 1643篇 |
2002年 | 1324篇 |
2001年 | 1076篇 |
2000年 | 913篇 |
1999年 | 697篇 |
1998年 | 584篇 |
1997年 | 534篇 |
1996年 | 428篇 |
1995年 | 325篇 |
1994年 | 309篇 |
1993年 | 216篇 |
1992年 | 252篇 |
1991年 | 191篇 |
1990年 | 173篇 |
1989年 | 164篇 |
1988年 | 154篇 |
1987年 | 133篇 |
1986年 | 91篇 |
1985年 | 111篇 |
1984年 | 98篇 |
1983年 | 54篇 |
1982年 | 61篇 |
1981年 | 54篇 |
1980年 | 45篇 |
1979年 | 28篇 |
1978年 | 24篇 |
1977年 | 27篇 |
1976年 | 22篇 |
1975年 | 26篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
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
42.
Ramya C. Mosarla Muthiah Vaduganathan Arman Qamar Javid Moslehi Gregory Piazza Robert P. Giugliano 《Journal of the American College of Cardiology》2019,73(11):1336-1349
Patients with active cancer are at an increased risk of arterial and venous thromboembolism (VTE) and bleeding events. Historically, in patients with cancer, low molecular weight heparins have been preferred for treatment of VTE, whereas warfarin has been the standard anticoagulant for stroke prevention in patients with atrial fibrillation (AF). More recently, direct oral anticoagulants (DOACs) have been demonstrated to reduce the risk of venous and arterial thromboembolism in large randomized clinical trials of patients with VTE and AF, respectively, thus providing an attractive oral dosing option that does not require routine laboratory monitoring. In this review, we summarize available clinical trial data and guideline recommendations, and outline a practical approach to anticoagulation management of VTE and AF in cancer. 相似文献
43.
44.
《Journal de Mycologie Médicale》2020,30(2):100970
A survey of mycology laboratories for antifungal susceptibility testing (AFST) was undertaken in France in 2018, to better understand the difference in practices between the participating centers and to identify the difficulties they may encounter as well as eventual gaps with published standards and guidelines. The survey captured information from 45 mycology laboratories in France on how they perform AFST (number of strains tested, preferred method, technical and quality aspects, interpretation of the MIC values, reading and interpretation difficulties). Results indicated that 86% of respondents used Etest as AFST method, with a combination of one to seven antifungal agents tested. Most of the participating laboratories used similar technical parameters to perform their AFST method and a large majority used, as recommended, internal and external quality assessments. Almost all the participating mycology laboratories (98%) reported difficulties to interpret the MIC values, especially when no clinical breakpoints are available. The survey highlighted that the current AFST practices in France need homogenization, particularly for MIC reading and interpretation. 相似文献
45.
46.
目的:探讨中西医结合护理干预妊娠晚期合并急性单纯性阑尾炎的临床疗效。方法:将2017 年9 月—2018 年12月于我院接受中西医结合保守治疗的31 例妊娠晚期合并急性单纯性阑尾炎患者作为研究对象,按随机数表法随机分为中西医结合护理组(观察组16 例)与常规护理组(对照组15 例),对照组采取常规护理措施,观察组在对照组的基础上增加中西医结合护理措施,对比两组患者的临床疗效。结果:观察组患者的心理状态变化、新生儿体质状况以及临床疗效等指标等情况均明显优于对照组,且组间对比差异显著有统计学意义(P < 0.05)。结论:中西医结合护理对妊娠晚期合并急性单纯性阑尾炎有较好的临床效果,可减少、甚至避免孕妇因合并急性阑尾炎而造成的打击和创伤。 相似文献
47.
随着我国医疗机构临床药师队伍的不断壮大,其在医疗服务中发挥着越来越重要的作用,对其工作进行绩效考核也是当今医疗领域的重要内容。以现有文献为基础,对国内外临床药师绩效考核体系进行分析,发现现有体系可分为为基于临床药师职责、基于临床药师业务流程、国外临床药师绩效考核体系三个方面;通过结合医疗机构的实际情况对现有绩效考核体系进行分析,发现存在考核指标和标准确定困难、考核难以做到实时性和延续性等问题,并针对这些问题提出清晰职责定位、重视临床药师价值体现等修改说明。 相似文献
48.
Javed A. Shaik Nima Estharabadi Ronda S. Farah Maria K. Hordinsky 《Experimental dermatology》2020,29(10):1004-1011
Platelet α-granules release growth factors (GFs) that promote healing and tissue regeneration. Platelet-rich plasma (PRP) is shown to be beneficial in treating alopecia, and however, clinical response can be inconsistent. Due to several fold enrichment of platelets secreting large quantities of GFs following PRP injections, heterogeneity in amounts of GFs secreted by platelets may contribute to inconsistent clinical responses. Herein, we evaluated factors that could potentially contribute to heterogeneous secretion of GFs by platelets. We measured platelet secretion of transforming growth factor beta1 (TGFβ1), platelet-derived growth factor (PDGF-BB), epidermal growth factor (EGF), vascular endothelial growth factor (VEGF) and fibroblast growth factor (FGF2) in aliquots of de-identified PRP samples from female patients undergoing therapy in the hair disease clinic. Although secretion of GFs by platelets was comparable in PRP samples of patients with non-cicatricial and cicatricial alopecia, a Shapiro-Wilk test for normal distribution indicated significant variability across all patient samples. The amount of GF secreted by platelets was comparable when PRP prepared from two FDA-cleared devices with distinct techniques were compared. We provide evidence of platelets secreting heterogeneous amounts of GFs within each sample as high and low secretion of random factors could be simultaneously detected. These results suggest inherent heterogeneity in secretion of GFs by platelets in patient samples that are not influenced by the device used to prepare PRP. Since some GFs could have antagonistic effects on hair growth, a balance between amounts of growth promoting and inhibiting factors may be crucial in determining clinical response to PRP therapy. 相似文献
49.
50.