全文获取类型
收费全文 | 659篇 |
免费 | 46篇 |
国内免费 | 16篇 |
专业分类
耳鼻咽喉 | 3篇 |
儿科学 | 42篇 |
妇产科学 | 2篇 |
基础医学 | 62篇 |
口腔科学 | 10篇 |
临床医学 | 69篇 |
内科学 | 138篇 |
皮肤病学 | 8篇 |
神经病学 | 16篇 |
特种医学 | 228篇 |
外科学 | 41篇 |
综合类 | 32篇 |
预防医学 | 29篇 |
眼科学 | 4篇 |
药学 | 13篇 |
中国医学 | 1篇 |
肿瘤学 | 23篇 |
出版年
2022年 | 2篇 |
2021年 | 10篇 |
2020年 | 8篇 |
2018年 | 4篇 |
2017年 | 8篇 |
2016年 | 9篇 |
2015年 | 11篇 |
2014年 | 6篇 |
2013年 | 13篇 |
2012年 | 6篇 |
2011年 | 12篇 |
2010年 | 18篇 |
2009年 | 25篇 |
2008年 | 10篇 |
2007年 | 15篇 |
2006年 | 12篇 |
2005年 | 13篇 |
2004年 | 5篇 |
2003年 | 20篇 |
2002年 | 9篇 |
2001年 | 4篇 |
2000年 | 6篇 |
1999年 | 14篇 |
1998年 | 46篇 |
1997年 | 49篇 |
1996年 | 39篇 |
1995年 | 23篇 |
1994年 | 41篇 |
1993年 | 27篇 |
1992年 | 8篇 |
1991年 | 13篇 |
1990年 | 8篇 |
1989年 | 28篇 |
1988年 | 20篇 |
1987年 | 20篇 |
1986年 | 25篇 |
1985年 | 14篇 |
1984年 | 16篇 |
1983年 | 12篇 |
1982年 | 13篇 |
1981年 | 24篇 |
1980年 | 6篇 |
1979年 | 6篇 |
1978年 | 9篇 |
1977年 | 10篇 |
1976年 | 11篇 |
1975年 | 10篇 |
1974年 | 3篇 |
排序方式: 共有721条查询结果,搜索用时 15 毫秒
1.
Leann D. Ermel Paul B. Marshburn William H. Kutteh 《American journal of reproductive immunology (New York, N.Y. : 1989)》1995,33(1):14-20
PROBLEM: To determine if heparin may act directly with antiphospholipid antibodies (APA) to prevent recurrent pregnancy loss (RPL). METHOD: Patients were seen at the University of Texas Southwestern Medical Center. Twenty women with a history of RPL (≥3 miscarriages), positive APA, and an otherwise normal evaluation were treated with heparin in two daily subcutaneous dosages during a successful pregnancy. APA levels were obtained prior to conception and again at 6, 20, and 30 weeks. RESULTS: Heparin reduced APA binding to cardiolipin and phosphatidylserine in a dose-dependent fashion in ELISA. Heparin affinity chromatography absorbed over 80% of the IgG anticardiolipin antibody in serum from women with high levels of APA. Women treated with increasing dosages of heparin during pregnancy had inversely decreasing levels of IgG anticardiolipin antibody. CONCLUSION: Heparin may act by directly binding APA in vivo, thereby decreasing the adverse effects of APA in women with APA associated RPL. 相似文献
2.
3.
Intestinal schistosomiasis japonica: CT-pathologic correlation 总被引:1,自引:0,他引:1
Lee RC; Chiang JH; Chou YH; Rubesin SE; Wu HP; Jeng WC; Hsu CC; Tiu CM; Chang T 《Radiology》1994,193(2):539
4.
5.
Laura A Hawryluck William RC Harvey Louise Lemieux-Charles Peter A Singer 《BMC medical ethics》2002,3(1):3-9
Background
Intensivists must provide enough analgesia and sedation to ensure dying patients receive good palliative care. However, if it is perceived that too much is given, they risk prosecution for committing euthanasia. The goal of this study is to develop consensus guidelines on analgesia and sedation in dying intensive care unit patients that help distinguish palliative care from euthanasia.Methods
Using the Delphi technique, panelists rated levels of agreement with statements describing how analgesics and sedatives should be given to dying ICU patients and how palliative care should be distinguished from euthanasia. Participants were drawn from 3 panels: 1) Canadian Academic Adult Intensive Care Fellowship program directors and Intensive Care division chiefs (N = 9); 2) Deputy chief provincial coroners (N = 5); 3) Validation panel of Intensivists attending the Canadian Critical Care Trials Group meeting (N = 12).Results
After three Delphi rounds, consensus was achieved on 16 statements encompassing the role of palliative care in the intensive care unit, the management of pain and suffering, current areas of controversy, and ways of improving palliative care in the ICU.Conclusion
Consensus guidelines were developed to guide the administration of analgesics and sedatives to dying ICU patients and to help distinguish palliative care from euthanasia. 相似文献6.
7.
RC Curran 《Journal of clinical pathology》1983,36(2):239-240
8.
9.
10.
The mean maximum nuclear diameter (Dmax) in 21 cases of non-Hodgkin's lymphoma (NHL) has been determined, using the Reichert-Jung (Kontron) MOP-AMO3 user-controlled image analyser. Nuclear diameters of high-grade malignancy NHL were found to be considerably greater than those of low-grade malignancy lymphomas, although there was some overlap of their ranges. These findings confirm objectively subjective estimates of nuclear size in NHL. The relative usefulness of the user-controlled (interactive) image analyser for the measurement of nuclei in tissue sections is compared with that of a fully automatic machine. 相似文献