全文获取类型
收费全文 | 5079篇 |
免费 | 748篇 |
国内免费 | 22篇 |
专业分类
耳鼻咽喉 | 18篇 |
儿科学 | 167篇 |
妇产科学 | 235篇 |
基础医学 | 519篇 |
口腔科学 | 140篇 |
临床医学 | 758篇 |
内科学 | 1279篇 |
皮肤病学 | 148篇 |
神经病学 | 454篇 |
特种医学 | 154篇 |
外科学 | 650篇 |
综合类 | 93篇 |
一般理论 | 7篇 |
预防医学 | 545篇 |
眼科学 | 171篇 |
药学 | 305篇 |
中国医学 | 2篇 |
肿瘤学 | 204篇 |
出版年
2023年 | 56篇 |
2022年 | 33篇 |
2021年 | 87篇 |
2020年 | 103篇 |
2019年 | 77篇 |
2018年 | 167篇 |
2017年 | 163篇 |
2016年 | 157篇 |
2015年 | 149篇 |
2014年 | 207篇 |
2013年 | 258篇 |
2012年 | 231篇 |
2011年 | 271篇 |
2010年 | 195篇 |
2009年 | 230篇 |
2008年 | 218篇 |
2007年 | 209篇 |
2006年 | 238篇 |
2005年 | 218篇 |
2004年 | 181篇 |
2003年 | 179篇 |
2002年 | 197篇 |
2001年 | 139篇 |
2000年 | 110篇 |
1999年 | 115篇 |
1998年 | 90篇 |
1997年 | 75篇 |
1996年 | 79篇 |
1995年 | 76篇 |
1994年 | 72篇 |
1993年 | 54篇 |
1992年 | 87篇 |
1991年 | 71篇 |
1990年 | 77篇 |
1989年 | 76篇 |
1988年 | 53篇 |
1987年 | 73篇 |
1986年 | 62篇 |
1985年 | 80篇 |
1984年 | 65篇 |
1983年 | 58篇 |
1981年 | 35篇 |
1980年 | 32篇 |
1979年 | 40篇 |
1978年 | 30篇 |
1977年 | 30篇 |
1976年 | 37篇 |
1975年 | 26篇 |
1973年 | 28篇 |
1971年 | 25篇 |
排序方式: 共有5849条查询结果,搜索用时 31 毫秒
1.
Cost‐Effectiveness and Cost‐Utility Analysis of Spinal Cord Stimulation in Patients With Failed Back Surgery Syndrome: Results From the PRECISE Study
下载免费PDF全文
![点击此处可从《Neuromodulation》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Furio Zucco MD Roberta Ciampichini MSc Angelo Lavano MD Amedeo Costantini MD Marisa De Rose MD Paolo Poli MD Gianpaolo Fortini MD Laura Demartini MD Enrico De Simone MD Valentino Menardo MD Piero Cisotto MD Mario Meglio MD Luciana Scalone PhD Lorenzo G. Mantovani DSc 《Neuromodulation》2015,18(4):266-276
2.
Angiotensin Converting Enzyme Inhibitors: Animal Experiments Suggest a New Pharmacological Treatment for Alcohol Abuse in Humans 总被引:1,自引:0,他引:1
G. Spinosa MSc E. Perlanski Dipl Tech. F. H. H. Leenen MD R. B. Stewart MSc L. A. Grupp DSc 《Alcoholism, clinical and experimental research》1988,12(1):65-70
The prevalence of heavy alcohol consumption is a major problem of increasing proportions throughout the world. Although alcohol sensitizing drugs and more recently serotonin uptake inhibitors are drug interventions with some following, their long term beneficial consequences have yet to be demonstrated. In recent years, we have demonstrated that manipulating activity in the renin-angiotensin system will dramatically alter voluntary alcohol consumption in rats. Based on these findings, the present study evaluated the ability of a class of drugs known as the angiotensin converting enzyme inhibitors to reduce voluntary alcohol drinking in laboratory animals. These drugs prevent the conversion of angiotensin I to angiotensin II. They have been licensed for use in Europe and North America and are indicated in the treatment of hypertension. Our experiments showed that both captopril (Capoten, Squibb) and enalapril (Vasotec, Merck Sharpe & Dohme) can reduce alcohol drinking in both normotensive and hypertensive animals regardless of whether the pattern of intake is in a bout or of a less exaggerated nature. Furthermore, this change in alcohol intake can occur without concomitant changes in blood pressure, plasma renin activity, overall fluid balance, or the distribution and metabolism of alcohol. Taken together these findings suggest that the angiotensin converting enzyme inhibitors should be evaluated in a clinical setting for they may prove to be a useful new treatment or treatment adjunct for alcohol abuse in humans. 相似文献
3.
Kay Kathryn L Roberts Beverley J Turnbull 《The Australian journal of advanced nursing》2002,20(2):8-14
The aim of this study was to document the amount of recent change in Australian nurse academics' scholarly productivity and to investigate the influence of demographic factors such as gender, academic rank, qualifications, increase in qualifications, state of residence, university and university size. Scholarly productivity was calculated from an audit of journal articles. The findings of this study indicate that, while there has been a slight increase in scholarly productivity in the last five years, nursing still lags behind other disciplines. Scholarly productivity was found to be positively associated with highest academic qualification, academic rank and promotion. The study indicates the continuing need for senior nurse academics to provide mentoring to colleagues and foster the development of skills associated with scholarly productivity. 相似文献
4.
5.
R A Iles R A Chalmers A J Hind 《Clinica chimica acta; international journal of clinical chemistry》1986,161(2):173-189
Proton nuclear magnetic resonance spectroscopy has been used to monitor changes in urinary metabolites in a patient with propionic acidaemia over a period of 10 months and in a patient with methylmalonic aciduria over a period of 11 days. Results could be obtained within 5-10 min of sample receipt. In the spectra on the patient with propionic acidaemia not only could fluctuations in 3-hydroxypropionate and propionylglycine excretion be followed, but also variations in creatine, glycine and betaine, which were often present at millimolar concentrations. The patient with methylmalonic aciduria had an acute episode of severe ketoacidosis during which the glycine excretion fell but creatine excretion rose and then fell on recovery from the episode. The changes in the creatine excretion may reflect disorders in intracellular energy supply. Nuclear magnetic resonance is a powerful technique for monitoring metabolic perturbations in the organic acidurias in 'real-time', allowing the planning and evaluation of therapy. 相似文献
6.
7.
Dr. J. Tajti MD PhD ; Dr. K. Sas MD ; Dr. D. Szok MD ; Dr. E. Vörös MD ; Dr. L. Vécsei MD DSc 《Headache》1996,36(4):259-260
We report on a patient with clusterlike headache and multiple brain metastases of lung cancer. Initially, cluster headache was suggested clinically by characteristic symptoms without any focal central nervous system signs. However, magnetic resonance imaging demonstrated multiple brain metastases. It is possible that tumor necrosis factor may have played a role in initiating the clusterlike headache. 相似文献
8.
9.
10.