全文获取类型
收费全文 | 5547篇 |
免费 | 499篇 |
国内免费 | 51篇 |
专业分类
耳鼻咽喉 | 46篇 |
儿科学 | 138篇 |
妇产科学 | 128篇 |
基础医学 | 794篇 |
口腔科学 | 247篇 |
临床医学 | 714篇 |
内科学 | 1093篇 |
皮肤病学 | 51篇 |
神经病学 | 395篇 |
特种医学 | 312篇 |
外科学 | 630篇 |
综合类 | 120篇 |
一般理论 | 7篇 |
预防医学 | 569篇 |
眼科学 | 42篇 |
药学 | 472篇 |
中国医学 | 9篇 |
肿瘤学 | 330篇 |
出版年
2021年 | 78篇 |
2020年 | 56篇 |
2019年 | 78篇 |
2018年 | 92篇 |
2017年 | 75篇 |
2016年 | 76篇 |
2015年 | 89篇 |
2014年 | 115篇 |
2013年 | 158篇 |
2012年 | 250篇 |
2011年 | 260篇 |
2010年 | 147篇 |
2009年 | 139篇 |
2008年 | 226篇 |
2007年 | 250篇 |
2006年 | 259篇 |
2005年 | 223篇 |
2004年 | 216篇 |
2003年 | 179篇 |
2002年 | 185篇 |
2001年 | 181篇 |
2000年 | 198篇 |
1999年 | 136篇 |
1998年 | 109篇 |
1997年 | 92篇 |
1996年 | 83篇 |
1995年 | 84篇 |
1994年 | 73篇 |
1993年 | 71篇 |
1992年 | 119篇 |
1991年 | 133篇 |
1990年 | 119篇 |
1989年 | 115篇 |
1988年 | 90篇 |
1987年 | 109篇 |
1986年 | 115篇 |
1985年 | 97篇 |
1984年 | 73篇 |
1983年 | 72篇 |
1982年 | 48篇 |
1981年 | 39篇 |
1979年 | 64篇 |
1978年 | 51篇 |
1977年 | 53篇 |
1976年 | 38篇 |
1975年 | 46篇 |
1974年 | 48篇 |
1973年 | 34篇 |
1972年 | 45篇 |
1969年 | 41篇 |
排序方式: 共有6097条查询结果,搜索用时 15 毫秒
11.
12.
The questioning skills of nursing instructors 总被引:1,自引:0,他引:1
13.
14.
15.
An infant is presented who at birth met criteria consistent with hypoplastic left heart syndrome. He was followed clinically and by 11 weeks of age demonstrated substantial growth of the left ventricle. He underwent successful repair of coarctation of the aorta and continues to do well with moderate aortic stenosis. The difficulties of predicting left ventricular growth and function are discussed, and management options are reviewed. 相似文献
16.
Coles A. J. Cox A. Le Page E. 《世界核心医学期刊文摘》2006,2(5):39-40
1991—2002年间采用可长期消耗T淋巴细胞的人单克隆抗体(Cam path-1H)治疗58例多发性硬化症(M S)患者,患者的临床症状和炎性替代标记物得到抑制。在M S的复发-缓解(R R)和继发进展(SP)期,Cam path-1H可降低患者的年复发率(分别由2.2降至0.19和由0.7降至0.001,P<0.001)。7年前使 相似文献
17.
18.
U S Page J E Okies L Q Colburn J C Bigelow N W Salomon A H Krause 《The Journal of thoracic and cardiovascular surgery》1986,92(5):847-852
The incidence of prior percutaneous transluminal coronary angioplasty in surgical cases is nearly doubling yearly. In 1985, 11.4% of our bypass patients had one or more prior angioplasties. One hundred thirty-five patients with prior angioplasty are compared to 2,205 patients without angioplasty undergoing surgical revascularization. The mortality is 3.2 times higher in the angioplasty patients than in the control patients and the perioperative infarction rate is 2.5 times higher. Forty-four patients were taken directly to the operating room from the catheterization laboratory, 50 were operated on within 10 days, and 41 underwent operation more than 10 days after angioplasty. All of these late failures were of the lesion previously dilated. The infarction rate was less in patients taken immediately to the operating room on an emergency basis than in those whose operation was delayed up to 10 days (30% versus 70%). All patients who died had angioplasty of the anterior descending coronary artery. Angioplasty of this artery increases operative mortality should surgical treatment become necessary acutely. Patients should be informed before angioplasty of the increased surgical risks after a failed angioplasty procedure. 相似文献
19.
20.
Social-psychological predictors of self-reported actual and intended physical activity in a university workforce sample. 总被引:2,自引:1,他引:1 下载免费PDF全文
This study investigated the social-psychological predictors of self-reported actual and intended physical activity in a university workforce sample. Based on the 'Theory of Planned Behaviour', but with additional variables of benefits, barriers and self-efficacy, it was found that both intended and actual activity could be predicted but only when strenuous activity was considered. In addition, the predictors were different for men and women. Specifically, the best predictors of intention to exercise were attitude, perceived control, benefits and self-efficacy for women, but only attitude for men. Predicting self-reported strenuous activity for women were intention and self-efficacy, and for men intention and attitude. Theoretical and practical implications for attitude research and exercise promotion are discussed. 相似文献