全文获取类型
收费全文 | 1166篇 |
免费 | 112篇 |
专业分类
耳鼻咽喉 | 23篇 |
儿科学 | 23篇 |
妇产科学 | 9篇 |
基础医学 | 128篇 |
口腔科学 | 11篇 |
临床医学 | 119篇 |
内科学 | 341篇 |
皮肤病学 | 5篇 |
神经病学 | 55篇 |
特种医学 | 39篇 |
外科学 | 229篇 |
综合类 | 23篇 |
一般理论 | 2篇 |
预防医学 | 138篇 |
眼科学 | 26篇 |
药学 | 61篇 |
中国医学 | 4篇 |
肿瘤学 | 42篇 |
出版年
2023年 | 15篇 |
2022年 | 16篇 |
2021年 | 46篇 |
2020年 | 26篇 |
2019年 | 51篇 |
2018年 | 47篇 |
2017年 | 36篇 |
2016年 | 45篇 |
2015年 | 43篇 |
2014年 | 52篇 |
2013年 | 60篇 |
2012年 | 104篇 |
2011年 | 105篇 |
2010年 | 73篇 |
2009年 | 58篇 |
2008年 | 79篇 |
2007年 | 52篇 |
2006年 | 38篇 |
2005年 | 41篇 |
2004年 | 58篇 |
2003年 | 42篇 |
2002年 | 36篇 |
2001年 | 9篇 |
2000年 | 12篇 |
1999年 | 12篇 |
1998年 | 11篇 |
1997年 | 7篇 |
1996年 | 6篇 |
1995年 | 4篇 |
1994年 | 5篇 |
1993年 | 2篇 |
1992年 | 6篇 |
1991年 | 4篇 |
1990年 | 7篇 |
1989年 | 9篇 |
1988年 | 6篇 |
1987年 | 4篇 |
1986年 | 4篇 |
1985年 | 2篇 |
1984年 | 2篇 |
1983年 | 2篇 |
1982年 | 4篇 |
1981年 | 4篇 |
1980年 | 4篇 |
1979年 | 6篇 |
1975年 | 3篇 |
1973年 | 3篇 |
1971年 | 2篇 |
1931年 | 1篇 |
1930年 | 1篇 |
排序方式: 共有1278条查询结果,搜索用时 15 毫秒
101.
I.S. Öktem H. Akdemir K. Koc A. Menkü B. Tucer A. Selcuklu C. Turan 《Acta neurochirurgica》1998,140(2):167-170
Summary Four cases of migration of the ventriculoperitoneal (V-P) shunt tip through patent processes vaginalis resulting in scrotal
hydrocele are presented. These cases are considered a rare complication of V-P shunts and causal mechanisms are discussed
with a review of the literature. 相似文献
102.
Effect of methylprednisolone, tirilazad mesylate and vitamin E on lipid peroxidation after experimental spinal cord injury 总被引:4,自引:0,他引:4
Effect of methylprednisolone (MP), tirilazad mesylate (TM) and vitamin E on lipid peroxidation (LP) was evaluated in an experimental model of spinal cord compression injury in anesthetized rats. Forty rats, divided randomly into four groups, were injured by compressing on the spinal cord at Th 3 for 1 min. Bolus injections of saline solution, MP (30 mg/kg bolus and 5.4 mg/kg/h), TM (10 mg/kg four times per day), or vitamin E (30 mg/ kg four times per day) were begun 1 h after the spinal cord injury (SCI). Twenty-four hours after treatment, the rats were killed, and malondialdehyde (MDA), a LP product, was measured in the spinal cord tissues. Rats treated with MP, TM and vitamin E had significantly decreased MDA levels (P<0.01) than rats in the control group. The lowest MDA levels were found in the TM group. These results suggest that MP, TM and vitamin E may have a protective effect against SCI in rats by its antioxidant effect. 相似文献
103.
104.
105.
106.
107.
108.
X Puéchal I Fajac T Bienvenu N Desmazes-Dufeu D Hubert J C Kaplan C J Menkès D J Dusser 《The European respiratory journal》1999,13(6):1281-1287
This study investigated the clinical characteristics and the possible involvement of the cystic fibrosis transmembrane conductance regulator (CFTR) gene in patients with symptomatic diffuse bronchiectasis (DB) associated with rheumatoid arthritis (RA). Twenty-six patients with both RA and DB (group RA+DB) and control groups of 29 consecutive patients with RA but no bronchiectasis (group RA) and 29 patients with symptomatic DB of unknown origin (group DB) were prospectively studied. Among the patients of the RA+DB group, four (15.4%) were heterozygous for the CFTR gene deltaF508 mutation, whereas no deltaF508 mutation was found in patients of the RA and the DB groups (both, p<0.05). This frequency of deltaF508 mutation was also higher than the expected frequency (2.8%) in the general European population (p<0.04). Sweat chloride values and nasal potential differences were normal in three out of four patients carrying the deltaF508 mutation. In the RA+DB group, those with deltaF508 mutation had more frequent chronic sinusitis (p<0.05), a trend toward a more severe pulmonary involvement, and a lower value of nasal potential differences (p<0.01) whereas their rheumatic features had no particularity. In the RA+DB group, patients with adult-onset bronchiectasis (including two with deltaF508 mutation) had a greater reduction in total lung capacity (p<0.05) and lower nasal potential differences (p<0.005) than those with childhood-onset bronchiectasis. This study suggests a possible deleterious effect of the cystic fibrosis transmembrane conductance regulator mutated protein in the airways which may predispose to the development and severity of bronchiectasis in patients suffering from rheumatoid arthritis. 相似文献
109.
110.