全文获取类型
收费全文 | 2088篇 |
免费 | 95篇 |
国内免费 | 150篇 |
专业分类
耳鼻咽喉 | 7篇 |
儿科学 | 102篇 |
妇产科学 | 24篇 |
基础医学 | 213篇 |
口腔科学 | 43篇 |
临床医学 | 261篇 |
内科学 | 518篇 |
皮肤病学 | 41篇 |
神经病学 | 97篇 |
特种医学 | 325篇 |
外科学 | 162篇 |
综合类 | 45篇 |
一般理论 | 1篇 |
预防医学 | 143篇 |
眼科学 | 49篇 |
药学 | 178篇 |
1篇 | |
肿瘤学 | 123篇 |
出版年
2021年 | 16篇 |
2019年 | 15篇 |
2018年 | 26篇 |
2016年 | 17篇 |
2015年 | 21篇 |
2014年 | 29篇 |
2013年 | 60篇 |
2012年 | 59篇 |
2011年 | 55篇 |
2010年 | 54篇 |
2009年 | 55篇 |
2008年 | 54篇 |
2007年 | 141篇 |
2006年 | 68篇 |
2005年 | 71篇 |
2004年 | 69篇 |
2003年 | 42篇 |
2002年 | 55篇 |
2001年 | 65篇 |
2000年 | 58篇 |
1999年 | 53篇 |
1998年 | 92篇 |
1997年 | 88篇 |
1996年 | 78篇 |
1995年 | 70篇 |
1994年 | 51篇 |
1993年 | 60篇 |
1992年 | 37篇 |
1991年 | 40篇 |
1990年 | 39篇 |
1989年 | 76篇 |
1988年 | 52篇 |
1987年 | 52篇 |
1986年 | 42篇 |
1985年 | 48篇 |
1984年 | 35篇 |
1983年 | 23篇 |
1982年 | 35篇 |
1981年 | 24篇 |
1980年 | 26篇 |
1979年 | 27篇 |
1978年 | 20篇 |
1977年 | 32篇 |
1976年 | 39篇 |
1975年 | 24篇 |
1974年 | 17篇 |
1973年 | 13篇 |
1972年 | 11篇 |
1970年 | 12篇 |
1969年 | 11篇 |
排序方式: 共有2333条查询结果,搜索用时 17 毫秒
1.
Toshiro Hara Rony Chanoch-Myers Nathan D. Mathewson Chad Myskiw Lyla Atta Lillian Bussema Stephen W. Eichhorn Alissa C. Greenwald Gabriela S. Kinker Christopher Rodman L. Nicolas Gonzalez Castro Hiroaki Wakimoto Orit Rozenblatt-Rosen Xiaowei Zhuang Jean Fan Tony Hunter Inder M. Verma Kai W. Wucherpfennig Itay Tirosh 《Cancer cell》2021,39(6):779-792.e11
- Download : Download high-res image (228KB)
- Download : Download full-size image
2.
3.
G E Hogarty C M Anderson D J Reiss S J Kornblith D P Greenwald C D Javna M J Madonia 《Archives of general psychiatry》1986,43(7):633-642
Relapse rates averaging 41% in the first year after discharge among schizophrenic patients receiving maintenance neuroleptic treatment led to the development of two disorder-relevant treatments: a patient-centered behavioral treatment and a psychoeducational family treatment. Following hospital admission, 103 patients residing in high expressed emotion (EE) households who met Research Diagnostic Criteria for schizophrenia or schizoaffective disorder were randomly assigned to a two-year aftercare study of family treatment and medication, social skills training and medication, their combination, or a drug-treated condition. First-year relapse rates among those exposed to treatment demonstrate a main effect for family treatment (19%), a main effect for social skills training (20%), and an additive effect for the combined conditions (0%) relative to controls (41%). Effects are explained, in part, by the absence of relapse in any household that changed from high to low EE. Only the combination of treatment sustains a remission in households that remain high in EE. Continuing study, however, suggests a delay of relapse rather than prevention. 相似文献
4.
5.
Venous duplex imaging: should it replace hemodynamic tests for deep venous thrombosis? 总被引:2,自引:0,他引:2
A J Comerota M L Katz L L Greenwald E Leefmans M Czeredarczuk J V White 《Journal of vascular surgery》1990,11(1):53-9; discussion 59-61
Noninvasive diagnosis of deep venous thrombosis has traditionally relied on detection of alterations in venous hemodynamics. Although phleborheography is among the most sensitive tests, it is inadequate for diagnosing infrapopliteal and nonocclusive proximal thrombi and for surveillance of patients at high risk for deep venous thrombosis. Venous duplex imaging is a new technique being rapidly accepted, however, without the same critical analysis given to previous diagnostic modalities. The purpose of this study is to evaluate the diagnostic acumen of venous duplex imaging compared to phleborheography and ascending phlebography in two distinct patient groups, and to determine whether patient selection, and thus the location or magnitude of thrombi have significant influence on these diagnostic tests. One hundred ten extremities in 103 patients were prospectively evaluated with venous duplex imaging, phleborheography, and ascending phlebography within the same 24-hour period. Patients were categorized into one of two groups: Diagnostic--patients evaluated because of clinical suspicion of acute deep venous thrombosis; and Surveillance--patients at high risk of postoperative deep venous thrombosis after total joint replacement, but not symptomatic. Patients in the diagnostic group had a greater frequency of deep venous thrombosis (p less than 0.001) and significantly more occluding above-knee thrombi (p = 0.054) compared to those in the surveillance group. Phleborheography detected 73% (27/37) of above-knee thrombi in the diagnostic group compared to 29% (2/7) in the surveillance group (p = 0.036). This difference was not noted with venous duplex imaging, which detected 100% of above-knee thrombi in both diagnostic and surveillance groups and 78% (7/9) of all below-knee thrombi.(ABSTRACT TRUNCATED AT 250 WORDS) 相似文献
6.
7.
Adverse reaction to intravenous gadoteridol 总被引:1,自引:0,他引:1
8.
9.
10.