全文获取类型
收费全文 | 1592篇 |
免费 | 103篇 |
国内免费 | 22篇 |
专业分类
耳鼻咽喉 | 15篇 |
儿科学 | 55篇 |
妇产科学 | 5篇 |
基础医学 | 221篇 |
口腔科学 | 19篇 |
临床医学 | 118篇 |
内科学 | 391篇 |
皮肤病学 | 5篇 |
神经病学 | 135篇 |
特种医学 | 328篇 |
外国民族医学 | 1篇 |
外科学 | 101篇 |
综合类 | 17篇 |
预防医学 | 134篇 |
眼科学 | 21篇 |
药学 | 95篇 |
中国医学 | 1篇 |
肿瘤学 | 55篇 |
出版年
2021年 | 9篇 |
2018年 | 13篇 |
2016年 | 10篇 |
2015年 | 14篇 |
2014年 | 23篇 |
2013年 | 52篇 |
2012年 | 27篇 |
2011年 | 48篇 |
2010年 | 28篇 |
2009年 | 30篇 |
2008年 | 32篇 |
2007年 | 56篇 |
2006年 | 41篇 |
2005年 | 37篇 |
2004年 | 39篇 |
2003年 | 36篇 |
2002年 | 39篇 |
2001年 | 25篇 |
2000年 | 30篇 |
1999年 | 35篇 |
1998年 | 56篇 |
1997年 | 47篇 |
1996年 | 63篇 |
1995年 | 49篇 |
1994年 | 37篇 |
1993年 | 44篇 |
1992年 | 32篇 |
1991年 | 42篇 |
1990年 | 42篇 |
1989年 | 60篇 |
1988年 | 56篇 |
1987年 | 51篇 |
1986年 | 52篇 |
1985年 | 61篇 |
1984年 | 41篇 |
1983年 | 38篇 |
1982年 | 36篇 |
1981年 | 32篇 |
1980年 | 19篇 |
1979年 | 16篇 |
1978年 | 19篇 |
1977年 | 36篇 |
1976年 | 25篇 |
1975年 | 27篇 |
1974年 | 11篇 |
1973年 | 11篇 |
1970年 | 8篇 |
1969年 | 10篇 |
1968年 | 11篇 |
1967年 | 12篇 |
排序方式: 共有1717条查询结果,搜索用时 15 毫秒
1.
Brachial artery hemodynamic response to acute converting enzyme inhibition by enalaprilat in essential hypertension 总被引:1,自引:0,他引:1
To assess the vascular involvement of renin-angiotensin system inhibition in human hypertension, acute effects of intravenous enalaprilat on brachial artery diameter, blood flow, and blood velocity were investigated in hypertensive patients by pulsed Doppler technique and compared with effects of saline vehicle. Compared with saline vehicle, enalaprilat reduced blood pressure (P less than 0.001) and increased brachial arterial diameter (P less than 0.01) and brachial blood flow (P less than 0.01). Enalaprilat effect on arterial pulse pressure was dependent on preinjection pulse pressure (r = -0.76; P less than 0.001), but its effect on mean blood pressure was not dependent on preinjection mean blood pressure. On the other hand, enalaprilat effect on arterial blood flow was negatively correlated with preinjection blood pressure (r = -0.64; P less than 0.02). The findings point to different responses of large and small arteries to intravenous enalaprilat. 相似文献
2.
James L. Levenson M.D. Harold J. Fallon M.D. 《The American journal of gastroenterology》1993,88(5):760-761
Interferon-α is the only approved and effective treatment for hepatitis C. Psychiatric side effects are common and have frequently required a decrease in dose or discontinuation of therapy. We here report a case of interferon-α-induced depression in a 40-yr-old man with hepatitis C successfully treated with the antidepressant fluoxetine, which allowed completion of interferon treatment. 相似文献
3.
4.
5.
6.
7.
8.
9.
A randomized controlled trial of electromagnetic therapy in the primary care management of venous leg ulceration 总被引:1,自引:1,他引:0
OBJECTIVE: The aim was to establish the potential efficacy, tolerabilityand side-effect profile of electromagnetic therapy as an adjunctto conventional dressings in the treatment of venous leg ulcers. METHOD: A prospective, randomized, double blind controlled clinicaltrial was carried out in a dedicated leg ulcer clinic basedin one urban general practice. Nineteen patients with leg ulcersof confirmed venous aetiology were assessed. The main outcomemeasures were rate and scale of venous leg ulcer healing, changesin patient-reported pain levels, quality of life, degree ofmobility, side effect profile and acceptability to patientsand staff. RESULTS: Sixty-eight per cent of patients attending this dedicated clinicachieved improvements in the size of their ulcer (4, 21%, healedfully) and in reduced pain levels (P < 0.05) during the trial,despite the chronicity of ulcer histories. Patients treatedwith electromagnetic therapy at 800 Hz were found at day 50to have significantly greater healing (P < 0.05) and paincontrol (P < 0.05) than placebo therapy or treatment with600 Hz. All patients reported improved mobility at the end ofthe study. The electromagnetic therapy was well tolerated bypatients, with no differences between groups in reporting adverseevents, and proved acceptable to staff. CONCLUSION: Despite the small numbers in this pilot study, electromagnetictherapy provided significant gains in the healing of venousleg ulcers and reduction in pain. Keywords. Electromagnetic therapy, RCT, leg ulcers, primary care. 相似文献
10.