全文获取类型
收费全文 | 9620篇 |
免费 | 856篇 |
国内免费 | 20篇 |
专业分类
耳鼻咽喉 | 76篇 |
儿科学 | 311篇 |
妇产科学 | 277篇 |
基础医学 | 1427篇 |
口腔科学 | 279篇 |
临床医学 | 1178篇 |
内科学 | 1858篇 |
皮肤病学 | 116篇 |
神经病学 | 807篇 |
特种医学 | 284篇 |
外科学 | 952篇 |
综合类 | 127篇 |
一般理论 | 11篇 |
预防医学 | 1107篇 |
眼科学 | 146篇 |
药学 | 796篇 |
中国医学 | 29篇 |
肿瘤学 | 715篇 |
出版年
2023年 | 68篇 |
2022年 | 97篇 |
2021年 | 199篇 |
2020年 | 133篇 |
2019年 | 212篇 |
2018年 | 240篇 |
2017年 | 195篇 |
2016年 | 193篇 |
2015年 | 208篇 |
2014年 | 300篇 |
2013年 | 372篇 |
2012年 | 609篇 |
2011年 | 617篇 |
2010年 | 336篇 |
2009年 | 305篇 |
2008年 | 539篇 |
2007年 | 513篇 |
2006年 | 554篇 |
2005年 | 504篇 |
2004年 | 526篇 |
2003年 | 428篇 |
2002年 | 400篇 |
2001年 | 214篇 |
2000年 | 206篇 |
1999年 | 154篇 |
1998年 | 133篇 |
1997年 | 101篇 |
1996年 | 68篇 |
1995年 | 83篇 |
1994年 | 89篇 |
1993年 | 80篇 |
1992年 | 117篇 |
1991年 | 131篇 |
1990年 | 109篇 |
1989年 | 93篇 |
1988年 | 68篇 |
1987年 | 91篇 |
1986年 | 102篇 |
1985年 | 85篇 |
1984年 | 76篇 |
1983年 | 71篇 |
1982年 | 50篇 |
1979年 | 67篇 |
1978年 | 50篇 |
1977年 | 48篇 |
1975年 | 45篇 |
1974年 | 54篇 |
1973年 | 39篇 |
1972年 | 47篇 |
1969年 | 41篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
Gupta Archana A. Mammo Danny A. Page Michael A. 《Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie》2020,258(1):167-173
Graefe's Archive for Clinical and Experimental Ophthalmology - To evaluate the long-term safety and efficacy of intrastromal bevacizumab for treatment of deep corneal neovascularization in... 相似文献
3.
4.
5.
Primary extraosseous osteogenic sarcoma of the mediastinum: clinical, pathologic, and radiologic correlation 总被引:1,自引:0,他引:1
R W Tarr T Kerner B McCook D L Page E P Nance J J Kaye 《Southern medical journal》1988,81(10):1317-1319
We have presented a rare case of primary involvement of the anterior mediastinum by osteogenic sarcoma in which CT was useful in demonstrating calcium within the mass, and in distinguishing the mass from surrounding bony structures. Although rare, extraosseous osteogenic sarcoma should be included in the differential diagnosis of a calcified anterior mediastinal mass. 相似文献
6.
7.
J. Bryan Page 《Journal of urban health》2005,82(3):iii35-iii43
Contemporary discourse contains numerous examples of use of the concept of culture by social and behavioral scientists. Simple reification, where the speaker makes culture into a thing capable of action exemplifies one usage in public discourse. Some quantitative social scientists attempt to characterize people’s cultural identities by means of a single categorical variable, which often “lumps” people into categories such as “Hispanic” or “Black” that in fact have numerous culturally bounded subcategories. Approaches that emphasize cultural process are preferable to those who attempt to categorize; more complex measures of acculturation help investigators to make convincing analyses of circumstances in which health disparities occur. Examples in which investigators make appropriate use of cultural characterizations demonstrate their utility in investigating health disparities in Haitian American women, injecting and noninjecting drug users, Hispanic youth, and adult Hispanics at risk of HIV infection. Focus on culture in the study of health disparities can identify entanglements between structural factors such as poverty and lack of education and cultural factors such as beliefs about health. Qualitative methods coupled with quantitative methods have great potential to improve investigators’ grasp of cultural nuance while capturing the distribution of qualitatively derived behaviors. 相似文献
8.
Robert N. Page Lee Dittrich Roy King Fouad Boulos David L. Page 《Journal of cutaneous pathology》2009,36(11):1206-1209
Originally described by Rosen in 1983, syringomatous nipple adenoma (SAN) is a tumor of disputed histogenesis, which can be problematic both diagnostically and therapeutically. 1 It is a benign primary tumor of breast epithelium with histology similar to that of the syringoma. In the current case, we describe a 40-year-old female with this lesion occurring within a supernumerary breast. This case represents, to our knowledge, the first such reported case, and represents a significant finding as its presence could lend some confusion as to whether or not this represents a benign primary process of breast or a potentially infiltrative tumor of the skin. 相似文献
9.
Leonard A. Jason PhD Steven B. Pokorny PhD Monica Adams MPH Annie Topliff MA Courtney Harris BA Yvonne Hunt PhD 《The American journal on addictions / American Academy of Psychiatrists in Alcoholism and Addictions》2009,18(5):367-374
This study evaluated the effects of tobacco Purchase, Use and Possession (PUP) laws on student perceptions of adolescent tobacco use within towns and schools. Twenty‐four towns were randomly assigned into two conditions, the experimental condition (E PUP) involved efforts to increase both PUP law enforcement and reduce minors' access to commercial sources of tobacco, whereas the control condition (C) focused only on efforts to reduce minors' access to commercial sources of tobacco. A hierarchical linear modeling analytical approach was selected due to the multilevel data and nested design. The present study found that over time, youth in the experimental PUP condition observed less youth tobacco usage at school and in their town, and perceived lower rates of tobacco among their peers at school and among friends than youth in the control condition. The findings suggest that PUP law enforcement might be used to strengthen community norms against youth tobacco use. 相似文献
10.