全文获取类型
收费全文 | 1281篇 |
免费 | 66篇 |
国内免费 | 7篇 |
专业分类
耳鼻咽喉 | 18篇 |
儿科学 | 76篇 |
妇产科学 | 27篇 |
基础医学 | 131篇 |
口腔科学 | 69篇 |
临床医学 | 90篇 |
内科学 | 232篇 |
皮肤病学 | 32篇 |
神经病学 | 26篇 |
特种医学 | 199篇 |
外国民族医学 | 1篇 |
外科学 | 198篇 |
综合类 | 63篇 |
预防医学 | 49篇 |
眼科学 | 19篇 |
药学 | 34篇 |
中国医学 | 4篇 |
肿瘤学 | 86篇 |
出版年
2023年 | 6篇 |
2022年 | 4篇 |
2021年 | 21篇 |
2020年 | 13篇 |
2019年 | 14篇 |
2018年 | 29篇 |
2017年 | 26篇 |
2016年 | 32篇 |
2015年 | 38篇 |
2014年 | 65篇 |
2013年 | 69篇 |
2012年 | 76篇 |
2011年 | 68篇 |
2010年 | 78篇 |
2009年 | 58篇 |
2008年 | 64篇 |
2007年 | 79篇 |
2006年 | 59篇 |
2005年 | 64篇 |
2004年 | 30篇 |
2003年 | 20篇 |
2002年 | 31篇 |
2001年 | 20篇 |
2000年 | 16篇 |
1999年 | 15篇 |
1998年 | 36篇 |
1997年 | 35篇 |
1996年 | 34篇 |
1995年 | 36篇 |
1994年 | 23篇 |
1993年 | 20篇 |
1992年 | 4篇 |
1991年 | 4篇 |
1990年 | 7篇 |
1989年 | 15篇 |
1988年 | 14篇 |
1987年 | 10篇 |
1986年 | 13篇 |
1985年 | 9篇 |
1984年 | 12篇 |
1983年 | 14篇 |
1982年 | 12篇 |
1981年 | 13篇 |
1980年 | 15篇 |
1979年 | 4篇 |
1978年 | 8篇 |
1977年 | 2篇 |
1976年 | 8篇 |
1975年 | 5篇 |
1949年 | 1篇 |
排序方式: 共有1354条查询结果,搜索用时 20 毫秒
1.
Endovascular stent-graft treatment of type A dissection: case report and review of literature. 总被引:2,自引:0,他引:2
S Senay C Alhan F Toraman H Karabulut S Dagdelen H Cagil 《European journal of vascular and endovascular surgery》2007,34(4):457-460
We report a successful endovascular stent-graft treatment of a patient with type A dissection with primary entry tear at the ascending aorta. Simultaneous coronary stenting was performed. A literature review was performed and the possible use of endovascular treatment for ascending aortic dissections is discussed. 相似文献
2.
3.
4.
E MOLKE JENSEN K. A. THIESSEN AA. CHRISTENSEN 《Acta anaesthesiologica Scandinavica》1986,30(2):109-110
The effect of 4 mg oral naloxone on preoperative gastric volume and pH of gastric aspirate was studied in a double-blind, randomized study. Twenty patients received 10 ml of naloxone (4 mg) mixed with 10 ml of orange juice, and 20 patients received 10 ml of isotonic saline mixed with 10 ml of orange juice, 2 h before surgery. Gastric content was obtained immediately after intubation of the trachea. No significant difference in gastric volume and pH of gastric aspirate was found between the two groups. It is concluded that naloxone does not affect gastric emptying and gastric acid secretion to a degree great enough to protect against aspiration of gastric contents into the lungs. 相似文献
5.
6.
Effects of Hypothermia on Blood Endogenous Endotoxin Levels During Cardiopulmonary Bypass 总被引:1,自引:0,他引:1
Hakan Gerçekoglu M.D. Ozhan Tarim M.D. † Ismail Agar M.D. †† Ahmet Korukçu M.D. Hasan Karabulut M.D. Hüseyin Soydemir M.D. Onur Sokullu M.D. Hüseyin Toklu M.D. Candan B. Johansson Ph.D. † Besim Yigiter M.D. Ercüment Kopman M.D. †† 《Journal of cardiac surgery》1997,12(4):223-227
A bstract Endotoxin activates white blood cells and complement and produces a spectrum of clinical syndromes ranging from fever to septic shock. Although production of endogenous endotoxemia during cardiopulmonary bypass (CPB) has recently been reported, the role of hypothermia on endotoxemia is not clear. In this study, we evaluated the effects of moderate (24–28°C) and mild (32–34°C) hypothermia on blood endotoxin levels. The study population consisted of 20 patients who underwent coronary artery bypass grafting (CABG) with CPB. Moderate systemic hypothermia was applied during aortic cross-clamping in ten patients (group 1) and mild hypothermia in the remaining ten patients (group 2). The mean rectal temperatures were 26.8 ± 1.2°C in group 1 and 33.8 ± 0.8°C in group 2. The blood samples for endotoxin level measurements were obtained before CPB, during aortic cross-clamping, immediately after the release of the cross-clamp, 20 minutes after the release of the cross-clamp, after CPB, and 2 hours postoperatively. There were no endotoxins in any of the samples before CPB, but it was detected after CPB in both groups. The endotoxin levels were significantly higher in group 1 than in group 2. The present study suggests that when hypothermia is the technique of choice, the deleterious effects of endotoxemia on patients with comorbidity must be considered. 相似文献
7.
Gokce Meral Ferda Tasar Filiz Sayin Mustafa Saysel Sedef Kir Erdem Karabulut 《Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics》2005,100(2):e25-e30
Lidocaine with epinephrine is currently the most common local anesthetic agent used for impacted third molar surgery. The purpose of the present study was to define the adverse hemodynamic effects and plasma concentrations of lidocaine and epinephrine on 17 healthy patients during the impacted teeth operations. Arterial blood pressure (systolic blood pressure, diastolic blood pressure), heart rate, peripheral oxygen saturation range, and electrocardiography were measured by an automatic noninvasive pressure device and monitor. High-performance liquid chromatography was used to measure the changes of plasma concentrations of epinephrine and lidocaine from blood samples taken 5 different times during the operation. We concluded that lidocaine-epinephrine is effective local anesthetic and had no important adverse events in healthy patients during the third molar surgery. 相似文献
8.
9.
10.