全文获取类型
收费全文 | 431篇 |
免费 | 34篇 |
国内免费 | 67篇 |
专业分类
耳鼻咽喉 | 2篇 |
儿科学 | 43篇 |
妇产科学 | 2篇 |
基础医学 | 61篇 |
口腔科学 | 25篇 |
临床医学 | 78篇 |
内科学 | 109篇 |
皮肤病学 | 2篇 |
神经病学 | 9篇 |
特种医学 | 96篇 |
外科学 | 14篇 |
综合类 | 18篇 |
预防医学 | 9篇 |
眼科学 | 2篇 |
药学 | 47篇 |
中国医学 | 2篇 |
肿瘤学 | 13篇 |
出版年
2019年 | 4篇 |
2018年 | 4篇 |
2017年 | 8篇 |
2016年 | 4篇 |
2015年 | 5篇 |
2014年 | 5篇 |
2013年 | 8篇 |
2012年 | 9篇 |
2011年 | 8篇 |
2010年 | 10篇 |
2009年 | 12篇 |
2008年 | 10篇 |
2007年 | 44篇 |
2006年 | 15篇 |
2005年 | 16篇 |
2004年 | 6篇 |
2003年 | 10篇 |
2002年 | 14篇 |
2001年 | 16篇 |
2000年 | 13篇 |
1999年 | 9篇 |
1998年 | 26篇 |
1997年 | 26篇 |
1996年 | 25篇 |
1995年 | 18篇 |
1994年 | 19篇 |
1993年 | 10篇 |
1992年 | 3篇 |
1991年 | 5篇 |
1990年 | 13篇 |
1989年 | 15篇 |
1988年 | 20篇 |
1987年 | 12篇 |
1986年 | 12篇 |
1985年 | 18篇 |
1984年 | 6篇 |
1983年 | 10篇 |
1982年 | 8篇 |
1981年 | 8篇 |
1980年 | 6篇 |
1978年 | 7篇 |
1977年 | 6篇 |
1976年 | 5篇 |
1975年 | 7篇 |
1970年 | 2篇 |
1964年 | 1篇 |
1962年 | 1篇 |
1960年 | 4篇 |
1959年 | 1篇 |
1958年 | 1篇 |
排序方式: 共有532条查询结果,搜索用时 15 毫秒
1.
2.
3.
The advantages of the new, safer, but more expensive iodinated contrast agents are discussed, and opinions on which patient groups should receive the agents are presented. 相似文献
4.
5.
Alterations in outer membrane proteins of Pseudomonas aeruginosa associated with selective resistance to quinolones. 总被引:17,自引:14,他引:3
下载免费PDF全文
![点击此处可从《Antimicrobial agents and chemotherapy》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Electrophoresis of outer membrane proteins in three ciprofloxacin-resistant strains of Pseudomonas aeruginosa isolated during therapy and their in vitro revertants indicated that diminution or loss of a 31- to 32-kilodalton outer membrane protein correlated with resistance in two of the three isolates. Resistance was unstable and caused no cross-resistance with other antibiotics. 相似文献
6.
A modified technique for catheterization of the pulmonary artery was developed. It involves the passage of a tapered, movable-core, J-tipped guide wire across the right ventricle into the pulmonary artery followed by the advancement of a straightened Grollman pigtail catheter. The technique was successful in 34 of 34 pulmonary artery catheterizations. The method avoids prolonged catheter manipulation within the right ventricle. In addition, since the catheter does not cross the tricuspid valve until the guide wire has been advanced, the occasional complication of the pigtail "hooking" on a tricuspid valve leaflet or chordae tendineae during catheter withdrawal and manipulation is prevented. 相似文献
7.
8.
乳腺管状小叶癌(Tubulolobular carcinoma,TLC)最初是被作为小叶癌的管状变型。作者总结了27例TLC的组织学、免疫表型和临床特征,并与纯小管癌和经典型小叶癌进行了比较。此组患者年龄43-79岁(中位年龄60岁)。1例双侧乳腺受累,5例病变为多灶性。肿瘤直径0.5-2.5cm,色灰褐,质硬。组织学观察:TLC的肿瘤细胞形成管状和条索状两种结构模式并相互混杂,且两者比例相当(统称为管状小叶模式)。 相似文献
9.
H. Giamarellou N. Galanakis C. Dendrinos J. Stefanou E. Daphnis G. K. Daikos 《European journal of clinical microbiology & infectious diseases》1986,5(2):232-235
The efficacy and safety of ciprofloxacin in the treatment ofPseudomonas aeruginosa infections was evaluated in 72 patients suffering from upper urinary tract infection (19 patients), deep soft tissue infection (16), chronic osteomyelitis (12), abscess (7), chronic otitis media (6), otitis externa (3) and bronchopneumonia (9). Forty-eight patients received an oral dose of 500 mg or 750 mg b.i.d. and five patients an i.v. dose of 200 mg b.i.d., while 19 patients were given both oral and parenteral doses. The duration of therapy ranged from seven days to more than four months. The MICs of ciprofloxacin for thePseudomonas aeruginosa strains isolated were in the range < 0.06–2 mg/l; 36% of the strains were resistant to all other available antibiotics. At follow-up after a minimum of six months the clinical success rate was 75% and the infecting organism was permanently eradicated in 49% of the patients. In nine patients the organism developed resistance, particularly when the initial MIC was higher than 0.5 mg/l. No significant adverse reactions were observed. Ciprofloxacin is the first antipseudomonal antimicrobial agent which can be administered orally and therefore fulfills a need in chemotherapy. 相似文献
10.