全文获取类型
| 收费全文 | 514237篇 |
| 免费 | 33464篇 |
| 国内免费 | 612篇 |
专业分类
| 耳鼻咽喉 | 6899篇 |
| 儿科学 | 16841篇 |
| 妇产科学 | 13521篇 |
| 基础医学 | 85047篇 |
| 口腔科学 | 14480篇 |
| 临床医学 | 44397篇 |
| 内科学 | 93711篇 |
| 皮肤病学 | 12157篇 |
| 神经病学 | 36243篇 |
| 特种医学 | 18456篇 |
| 外国民族医学 | 63篇 |
| 外科学 | 77055篇 |
| 综合类 | 8474篇 |
| 一般理论 | 118篇 |
| 预防医学 | 38975篇 |
| 眼科学 | 12142篇 |
| 药学 | 40551篇 |
| 4篇 | |
| 中国医学 | 1007篇 |
| 肿瘤学 | 28172篇 |
出版年
| 2018年 | 4932篇 |
| 2015年 | 4510篇 |
| 2014年 | 6067篇 |
| 2013年 | 9547篇 |
| 2012年 | 12868篇 |
| 2011年 | 14274篇 |
| 2010年 | 8303篇 |
| 2009年 | 7772篇 |
| 2008年 | 13693篇 |
| 2007年 | 14698篇 |
| 2006年 | 14941篇 |
| 2005年 | 14353篇 |
| 2004年 | 14047篇 |
| 2003年 | 13392篇 |
| 2002年 | 13267篇 |
| 2001年 | 24069篇 |
| 2000年 | 25080篇 |
| 1999年 | 20555篇 |
| 1998年 | 5428篇 |
| 1997年 | 4706篇 |
| 1996年 | 5042篇 |
| 1995年 | 4626篇 |
| 1994年 | 4320篇 |
| 1993年 | 4136篇 |
| 1992年 | 15725篇 |
| 1991年 | 16309篇 |
| 1990年 | 16422篇 |
| 1989年 | 15796篇 |
| 1988年 | 14575篇 |
| 1987年 | 14419篇 |
| 1986年 | 13597篇 |
| 1985年 | 12975篇 |
| 1984年 | 9627篇 |
| 1983年 | 8247篇 |
| 1982年 | 4559篇 |
| 1981年 | 4229篇 |
| 1979年 | 9418篇 |
| 1978年 | 6855篇 |
| 1977年 | 5772篇 |
| 1976年 | 5602篇 |
| 1975年 | 6396篇 |
| 1974年 | 7634篇 |
| 1973年 | 7130篇 |
| 1972年 | 6960篇 |
| 1971年 | 6685篇 |
| 1970年 | 6172篇 |
| 1969年 | 5888篇 |
| 1968年 | 5559篇 |
| 1967年 | 5012篇 |
| 1966年 | 4451篇 |
排序方式： 共有10000条查询结果，搜索用时 15 毫秒
31.
Marin D. E. Pistol G. C. Gras M. Palade M. Taranu I. 《Naunyn-Schmiedeberg's archives of pharmacology》2018,391(10):1147-1156
Naunyn-Schmiedeberg's Archives of Pharmacology - Ochratoxin A (OTA) and aristolochic acid (AA) are toxins that can frequently contaminate cereals and cereals-based products. The present study... 相似文献
32.
Sofosbuvir and velpatasvir with or without voxilaprevir in direct‐acting antiviral‐naïve chronic hepatitis C: patient‐reported outcomes from POLARIS 2 and 3 
下载免费PDF全文
下载免费PDF全文 33.
Systematic review with meta‐analysis: online psychological interventions for mental and physical health outcomes in gastrointestinal disorders including irritable bowel syndrome and inflammatory bowel disease 下载免费PDF全文
下载免费PDF全文 I. Hanlon C. Hewitt K. Bell A. Phillips A. Mikocka‐Walus 《Alimentary pharmacology & therapeutics》2018,48(3):244-259
34.
Lisa I. Iezzoni Amy J. Wint Alexy Arauz Boudreau Cheri A. Blauwet Karen A. Kuhlthau 《Disability and health journal》2018,11(3):405-411
Background
Few U.S. studies have explored how children experience a parent's mobility disability and its effects on their daily lives.Objective
We aimed to engage youth ages 13–17 who had at least one parent with mobility disability in describing their perceptions of their parent's disability and its consequences for their daily and family life.Methods
Participants videoed and photographed their experiences following general guidelines from the researchers about topics of interest. Participants made their own choices about what they submitted. We used conventional content analysis to identify broad themes.Results
The mean (standard deviation) age of the 10 participants was 15.2 (1.9) years; 5 were male; 9 participants were white. All 5 girls submitted multiple self-focused (selfie) videos made in their bedrooms; the 5 boys submitted more diverse data files. Several broad themes or topics emerged including: the effects of timing and trajectory of the parent's disability; perceptions of early maturity and responsibility; fears and frustrations relating to the parent's disability; support and emerging resilience; and sense of social justice. Participants generally felt their parents' disability made them become – compared to their peers – more mature, responsible, capable of performing household tasks, and aware of disability civil rights.Conclusions
Participants raised many issues that health care providers should be aware of when youth have parents with mobility disability. A parent's mobility disability may be associated with resilience but also may pose challenges for youth. More research is needed to understand better adolescents' experiences and how clinicians might best assist these youth. 相似文献35.
36.
37.
Yuliya V. Yushkova Elena I. Chernyak Yuriy V. Gatilov Vladimir G. Vasil&#x;ev Sergey V. Morozov Igor A. Grigor&#x;ev 《Saudi Pharmaceutical Journal》2018,26(1):84-92
The interaction of trolox with ammonia, alkylamines of different classes, and amino derivatives of heterocyclic compounds, including nitroxyl radicals and alkaloids, led to the production of ammonium salts called ion conjugates (ICs). Five ICs were characterised by X-ray diffraction. This is the first time a wide range of ICs were made from trolox with amines, and ESI-MS data demonstrated they have the potential to generate pseudomolecular [(A?B+)?+?H]+ ions. For all obtained trolox ICs, a significant increase (1–3 orders of magnitude) in water solubility was achieved while retaining high antioxidant activity. ICs synthesised from two biologically active fragments may be used to create polyfunctional agents with varying solubility and bioavailability. 相似文献
38.
39.
40.
Conversion of the Agency for Healthcare Research and Quality's Quality Indicators from ICD‐9‐CM to ICD‐10‐CM/PCS: The Process,Results, and Implications for Users 下载免费PDF全文
下载免费PDF全文