全文获取类型
收费全文 | 1186篇 |
免费 | 41篇 |
国内免费 | 149篇 |
专业分类
儿科学 | 58篇 |
妇产科学 | 5篇 |
基础医学 | 86篇 |
口腔科学 | 52篇 |
临床医学 | 187篇 |
内科学 | 276篇 |
皮肤病学 | 30篇 |
神经病学 | 47篇 |
特种医学 | 314篇 |
外科学 | 85篇 |
综合类 | 26篇 |
预防医学 | 38篇 |
眼科学 | 13篇 |
药学 | 109篇 |
1篇 | |
肿瘤学 | 49篇 |
出版年
2022年 | 3篇 |
2021年 | 6篇 |
2020年 | 4篇 |
2019年 | 6篇 |
2018年 | 15篇 |
2017年 | 8篇 |
2016年 | 10篇 |
2015年 | 11篇 |
2014年 | 21篇 |
2013年 | 39篇 |
2012年 | 32篇 |
2011年 | 25篇 |
2010年 | 36篇 |
2009年 | 45篇 |
2008年 | 34篇 |
2007年 | 120篇 |
2006年 | 29篇 |
2005年 | 44篇 |
2004年 | 20篇 |
2003年 | 5篇 |
2002年 | 19篇 |
2001年 | 19篇 |
2000年 | 16篇 |
1999年 | 17篇 |
1998年 | 79篇 |
1997年 | 79篇 |
1996年 | 72篇 |
1995年 | 61篇 |
1994年 | 43篇 |
1993年 | 51篇 |
1992年 | 10篇 |
1991年 | 23篇 |
1990年 | 15篇 |
1989年 | 52篇 |
1988年 | 38篇 |
1987年 | 33篇 |
1986年 | 27篇 |
1985年 | 25篇 |
1984年 | 22篇 |
1983年 | 16篇 |
1982年 | 29篇 |
1981年 | 14篇 |
1980年 | 16篇 |
1979年 | 8篇 |
1978年 | 5篇 |
1977年 | 16篇 |
1976年 | 29篇 |
1975年 | 13篇 |
1973年 | 4篇 |
1930年 | 3篇 |
排序方式: 共有1376条查询结果,搜索用时 31 毫秒
1.
2.
3.
Adverse reaction to intravenous gadoteridol 总被引:1,自引:0,他引:1
4.
Social problem solving as a moderating variable between negative life stress and depressive symptoms
Arthur M. Nezu Christine M. Nezu Lisa Saraydarian Kathleen Kalmar George F. Ronan 《Cognitive therapy and research》1986,10(5):489-498
The present study sought to investigate the moderating function that social problem-solving effectiveness serves in relation to negative stressful life events and depressive symptomatology. It was also hypothesized that knowledge of problem solving would improve upon the prediction of level of depressive symptoms beyond the assessment of stressful events. Results involving 462 undergraduate students provide support for both predictions. Specifically, findings from a multiple regression analysis indicated that (1) differences in reported depressive mood between subjects under high and low stress levels were minimal for individuals characterized as effective problem-solvers, relative to those persons with problem-solving scores reflective of ineffective problem solving; and (2) assessment of problem-solving scores and their interaction with stress level provided for an additional three times the amount of explained variance in predicting depression scores beyond life stress scores. Additionally, a cross-validation of the regression analysis was conducted and found to result in a minimal amount of shrinkage that could be due to samplespecific characteristics.We would like to extend our appreciation to two anonymous reviewers for their helpful comments on an earlier draft of this article. The study was supported in part by a grant funded by Fairleigh Dickinson University to the first author. 相似文献
5.
6.
7.
Parish P Sedghizadeh Derek Wong Charles F Shuler Vincent Linz John R Kalmar Carl M Allen 《Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics》2007,104(2):e30-e34
The calcifying epithelial odontogenic tumor (CEOT), or Pindborg tumor, is a rare and benign odontogenic neoplasm that affects the jaw. The most common manifestation of CEOT is a unifocal or localized lesion of the involved jaw, which may appear clinically as a hard tissue swelling and radiographically as a mixed radiolucent-radiopaque mass. In this article, we present a unique case of CEOT affecting multiple sites in the maxilla and mandible of a 51-year-old white man. Though biopsy samples from all involved sites revealed similar histopathologic features consistent with CEOT, the fact that there was a multifocal presentation is an unusual phenomenon for CEOT and has never been reported. Multifocal odontogenic lesions are not typical but have been observed in conditions associated with known genetic mutations. For example, multiple odontogenic keratocysts are the most common feature of the inherited condition known as nevoid basal cell carcinoma syndrome. This case, however, is the first one to demonstrate that there may be a multifocal variant of CEOT that has not been previously recognized. 相似文献
8.
9.
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
10.