全文获取类型
收费全文 | 896篇 |
免费 | 46篇 |
国内免费 | 59篇 |
专业分类
儿科学 | 45篇 |
妇产科学 | 7篇 |
基础医学 | 45篇 |
口腔科学 | 19篇 |
临床医学 | 135篇 |
内科学 | 228篇 |
皮肤病学 | 17篇 |
神经病学 | 12篇 |
特种医学 | 239篇 |
外科学 | 113篇 |
综合类 | 29篇 |
预防医学 | 42篇 |
眼科学 | 8篇 |
药学 | 36篇 |
中国医学 | 2篇 |
肿瘤学 | 24篇 |
出版年
2022年 | 4篇 |
2021年 | 9篇 |
2019年 | 4篇 |
2018年 | 12篇 |
2017年 | 5篇 |
2015年 | 14篇 |
2014年 | 13篇 |
2013年 | 25篇 |
2012年 | 13篇 |
2011年 | 11篇 |
2010年 | 20篇 |
2009年 | 21篇 |
2008年 | 17篇 |
2007年 | 51篇 |
2006年 | 13篇 |
2005年 | 19篇 |
2004年 | 23篇 |
2003年 | 10篇 |
2002年 | 9篇 |
2001年 | 11篇 |
2000年 | 9篇 |
1999年 | 13篇 |
1998年 | 53篇 |
1997年 | 37篇 |
1996年 | 61篇 |
1995年 | 46篇 |
1994年 | 40篇 |
1993年 | 50篇 |
1992年 | 12篇 |
1991年 | 17篇 |
1990年 | 18篇 |
1989年 | 30篇 |
1988年 | 39篇 |
1987年 | 38篇 |
1986年 | 27篇 |
1985年 | 31篇 |
1984年 | 20篇 |
1983年 | 13篇 |
1982年 | 13篇 |
1981年 | 25篇 |
1980年 | 23篇 |
1979年 | 6篇 |
1978年 | 11篇 |
1977年 | 17篇 |
1976年 | 8篇 |
1975年 | 10篇 |
1973年 | 4篇 |
1972年 | 3篇 |
1971年 | 4篇 |
1970年 | 3篇 |
排序方式: 共有1001条查询结果,搜索用时 15 毫秒
1.
A M Sear 《Health care management review》1989,14(1):49-54
The validity of studies comparing charges between hospitals is threatened by differences in hospital case mix and severity of illness within diagnoses. The method presented here uses readily available Blue Cross claims data to make interhospital comparisons of charges. 相似文献
2.
3.
4.
5.
We conducted a pharmaco-economic analysis of the prospective peri-operative studies of beta-blocker and statin administration for major elective non-cardiac surgery, using the Discovery Health claims costs for 2004. This analysis shows that acute peri-operative beta-blockade and statin therapy could result in a cost saving through a reduction in major perioperative cardiovascular complications in patients with an expected peri-operative major cardiovascular complication rate exceeding 10% following elective major non-cardiac surgery. The validity of these findings is dependent on whether the incidence of cardiovascular complications following major noncardiac surgery reported in the international literature is found to be similar in South Africa. 相似文献
6.
Critically ill patients are usually in a catabolic state and may require total parenteral nutrition; this often includes lipid emulsions. Any adverse effects of constituents on pulmonary function, white cell function or the haemocoagulation system could have disastrous consequences in such patients. We have investigated the effects of a new intravenous lipid preparation containing medium chain triglycerides, which, in severely ill malnourished patients are theoretically a preferable energy source to conventional drug chain triglycerides. In a pilot study 17 critically ill patients whose lungs were artificially ventilated were given this lipid emulsion; no adverse effects were observed. Arterial oxygen and carbon dioxide tensions, ratio of inspired oxygen fractional concentration to arterial oxygen tension, platelet and white cell counts all remained constant and the complement system was not activated. 相似文献
7.
8.
9.
10.
Alan M. Sear Ph.D. 《Journal of medical systems》1988,12(5):275-283
The eligibility requirements for AFDC Medicaid are so extensive and complicated that most health care providers do not attempt to ascertain whether or not a particular patient is eligible for the program, even when no other source of payment is available. This results in lost revenue for health service providers nationwide amounting to hundreds of millions of dollars per year. Computer technology, in the form of expert systems, offers an opportunity to rationalize the Medicaid eligibility determination process and to do real-time assessment of patient eligibility. This article presents an expert system called MEDELEX (MEdicaidELigibilityEXpert) for determining Medicaid eligibility. The program (when run on an 8 MHz MS-DOS microcomputer with at least 640 KB of RAM) requires about 20 min for data entry and 5 sec for the actual eligibility determination. The expert system was written in Prolog and has been designed in such a way that it can be readily modified to take into account the state-to-state variability in eligibility requirements for AFDC Medicaid. 相似文献