全文获取类型
收费全文 | 6373篇 |
免费 | 318篇 |
国内免费 | 97篇 |
专业分类
耳鼻咽喉 | 78篇 |
儿科学 | 368篇 |
妇产科学 | 81篇 |
基础医学 | 776篇 |
口腔科学 | 143篇 |
临床医学 | 420篇 |
内科学 | 1405篇 |
皮肤病学 | 230篇 |
神经病学 | 304篇 |
特种医学 | 270篇 |
外科学 | 944篇 |
综合类 | 218篇 |
一般理论 | 3篇 |
预防医学 | 345篇 |
眼科学 | 268篇 |
药学 | 426篇 |
1篇 | |
中国医学 | 34篇 |
肿瘤学 | 474篇 |
出版年
2023年 | 40篇 |
2022年 | 42篇 |
2021年 | 163篇 |
2020年 | 123篇 |
2019年 | 110篇 |
2018年 | 149篇 |
2017年 | 116篇 |
2016年 | 149篇 |
2015年 | 177篇 |
2014年 | 252篇 |
2013年 | 285篇 |
2012年 | 433篇 |
2011年 | 451篇 |
2010年 | 241篇 |
2009年 | 214篇 |
2008年 | 345篇 |
2007年 | 431篇 |
2006年 | 363篇 |
2005年 | 307篇 |
2004年 | 266篇 |
2003年 | 234篇 |
2002年 | 239篇 |
2001年 | 118篇 |
2000年 | 144篇 |
1999年 | 113篇 |
1998年 | 79篇 |
1997年 | 66篇 |
1996年 | 51篇 |
1995年 | 59篇 |
1994年 | 31篇 |
1993年 | 36篇 |
1992年 | 82篇 |
1991年 | 72篇 |
1990年 | 81篇 |
1989年 | 74篇 |
1988年 | 67篇 |
1987年 | 60篇 |
1986年 | 61篇 |
1985年 | 70篇 |
1984年 | 50篇 |
1983年 | 31篇 |
1982年 | 22篇 |
1981年 | 35篇 |
1980年 | 25篇 |
1979年 | 27篇 |
1978年 | 28篇 |
1977年 | 18篇 |
1976年 | 19篇 |
1975年 | 21篇 |
1971年 | 14篇 |
排序方式: 共有6788条查询结果,搜索用时 15 毫秒
1.
Naveen B.S. M.T. Mohan J. Tharayil S.T. Joseph 《International journal of oral and maxillofacial surgery》2021,50(8):1003-1008
A local pedicled vascularized bone flap can prevent the morbidity and cost of free bone flap surgery in small segmental bone defects or long cartilaginous defects of the head and neck. Such flaps can also be useful in patients who are high risk for surgery. The periosteal vascularity of the mandible can be used to design islanded facial artery-based bone flaps, which can be utilized to that extent. Two patients with a small segmental mandibulectomy defect and one patient with a long cricotracheal resection defect underwent reconstruction using three different designs of islanded facial artery osteomyomucosal/osseous flap (iFOMM). The patients had a minimum follow-up period of 18 months. All flaps were successful, with satisfactory healing and without any functional deficit or disease at last follow-up. 相似文献
2.
Yue Yu MBBS MRCS Rehena Sultana MSc Mahalakshmi S. Rangabashyam MBBS MRCSEd DipNB Niraj Mohan MBBS Jacqueline S. G. Hwang MBBS FRCPA FAMS Yoke-Lim Soong MBBS FRCR FFRRCSI Ngian-Chye Tan MBBS MMed FRCSEd FAMS Gopalakrishna N. Iyer MBBS PhD FRCSEd FAMS Hiang-Khoon Tan MBBS FRCSEd FAMS PhD 《The Laryngoscope》2020,130(8):1947-1953
3.
4.
5.
6.
7.
Anusha Mohan Neil Bhamoo Juan S. Riquelme Samantha Long Arnaud Norena Sven Vanneste 《Human brain mapping》2020,41(7):1819-1832
Several studies have demonstrated the neural correlates of chronic tinnitus. However, we still do not understand what happens in the acute phase. Past studies have established Zwicker tone (ZT) illusions as a good human model for acute tinnitus. ZT illusions are perceived following the presentation of a notched noise stimulus, that is, broadband noise with a narrow band‐stop filter (notch). In the current study, we compared the neural correlates of the reliable perception of a ZT illusion to that which is not. We observed changes in evoked and total theta power in wide‐spread regions of the brain particularly in the temporal‐parietal junction, pregenual anterior cingulate cortex/ventromedial prefrontal cortex (pgACC/vmPFC), parahippocampus during perception of the ZT illusion. Furthermore, we observe that increased theta power significantly predicts a gradual positive change in the intensity of the ZT illusion. Such changes may suggest a malfunction of the sensory gating system that enables habituation to redundant stimuli and suppresses hyperactivity. It could also suggest a successful retrieval of the memory of the missing frequencies, resulting in their conscious perception indicating the role of higher‐order processing in the mechanism of action of ZT illusions. To establish a more concrete relationship between ZT illusion and chronic tinnitus, future longitudinal studies following up a much larger sample of participants who reliably perceive a ZT illusion to see if they develop tinnitus at a later stage is essential. This could inform us if the ZT illusion may be a precursor to chronic tinnitus. 相似文献
8.
P. Paul Chandanabhumma Bonnie M. Duran Jeffery C. Peterson Cynthia R. Pearson John G. Oetzel Mohan J. Dutta 《Health communication》2020,35(5):616-627
ABSTRACTCommunity-based participatory research (CBPR) has captured public health attention and support because it is positioned as an approach that involves researchers and communities as equitable partners in addressing health disparities. However, it is unknown the extent to which CBPR creates a participatory space in the scientific discourse to signal “community voice,” which we define as textual expression of community-centered perspectives on collective roles, interests, and worldviews. In this study, we utilized the culture-centered approach to examine the expression of community voice in the abstracts and public health relevance statements of 253 extramural CBPR projects in the U.S. that received funding from the National Institute of Health and Centers for Disease Control and Prevention in 2009. We found that project abstracts and public health relevance statements contain four textual domains, or potential sites of contest to signal the articulation of community agency and voice within the CBPR projects. These domains include: 1) the rationale for the community health issue, 2) the roles of community partners, 3) community-centered outcomes of the partnership, and 4) elements of participatory research process. The degree of culture-centeredness of the texts is suggested in the extent to which articulations of community agency and voice are signaled across the four domains. We conclude that the dynamics of CBPR may shape culture-centered expressions of problem identification, solution configuration, structural transformations, reflexivity, values, and agency in the project abstracts and public health relevance statements. 相似文献
9.
10.
Mohan Jyoti Dutta LaReina Hingson Agaptus Anaele Soumitro Sen Kyle Jones 《Health communication》2016,31(6):647-658
Food insecurity and its most extreme form, hunger, have increased exponentially in the United States since 2006. This essay seeks to contribute to our understanding of hunger by attending to the context of the financial crisis as an organizing frame for understanding local meanings of hunger. Within a broader framework of the culture-centered approach (CCA) that works to identify and develop locally rooted solutions to food insecurity, we describe through locally grounded stories of food insecurity the financial climate where large percentages of U.S. households have been cast into poverty because of the crash of an unregulated economy. These local understandings of hunger in the context of the economy offer entry points for organizing a food-insecure coalition that seeks to address the stigma around food insecurity. 相似文献