全文获取类型
收费全文 | 5358篇 |
免费 | 571篇 |
国内免费 | 246篇 |
专业分类
耳鼻咽喉 | 26篇 |
儿科学 | 343篇 |
妇产科学 | 125篇 |
基础医学 | 748篇 |
口腔科学 | 83篇 |
临床医学 | 651篇 |
内科学 | 975篇 |
皮肤病学 | 97篇 |
神经病学 | 471篇 |
特种医学 | 201篇 |
外国民族医学 | 1篇 |
外科学 | 1116篇 |
综合类 | 141篇 |
预防医学 | 467篇 |
眼科学 | 49篇 |
药学 | 354篇 |
中国医学 | 4篇 |
肿瘤学 | 323篇 |
出版年
2022年 | 48篇 |
2021年 | 82篇 |
2020年 | 35篇 |
2019年 | 78篇 |
2018年 | 107篇 |
2017年 | 64篇 |
2016年 | 75篇 |
2015年 | 81篇 |
2014年 | 99篇 |
2013年 | 161篇 |
2012年 | 208篇 |
2011年 | 246篇 |
2010年 | 128篇 |
2009年 | 146篇 |
2008年 | 255篇 |
2007年 | 261篇 |
2006年 | 295篇 |
2005年 | 261篇 |
2004年 | 258篇 |
2003年 | 217篇 |
2002年 | 228篇 |
2001年 | 219篇 |
2000年 | 206篇 |
1999年 | 153篇 |
1998年 | 99篇 |
1997年 | 73篇 |
1996年 | 90篇 |
1995年 | 82篇 |
1994年 | 67篇 |
1993年 | 70篇 |
1992年 | 138篇 |
1991年 | 120篇 |
1990年 | 104篇 |
1989年 | 122篇 |
1988年 | 109篇 |
1987年 | 99篇 |
1986年 | 74篇 |
1985年 | 69篇 |
1984年 | 66篇 |
1983年 | 59篇 |
1982年 | 46篇 |
1981年 | 38篇 |
1980年 | 35篇 |
1979年 | 66篇 |
1978年 | 51篇 |
1977年 | 47篇 |
1976年 | 33篇 |
1973年 | 37篇 |
1971年 | 40篇 |
1966年 | 33篇 |
排序方式: 共有6175条查询结果,搜索用时 15 毫秒
31.
32.
33.
Head injuries incurred by children and young adults during informal recreation. 总被引:1,自引:1,他引:0
下载免费PDF全文
![点击此处可从《American journal of public health》网站下载免费的PDF全文](/ch/ext_images/free.gif)
S P Baker C Fowler G Li M Warner A L Dannenberg 《American journal of public health》1994,84(4):649-652
To examine injuries related to playground equipment, children's vehicles, roller skates, and skateboards, 1991 data on emergency room patients younger than 25 years in the Consumer Product Safety Commission's 91 surveillance hospitals were used. Head injury was the primary diagnosis for an estimated 58,480 patients, exceeding the total number of head injuries to bicyclists younger than 25 years. The head injury rate decreased with age. The large number and high rate of head injuries in children involved in a variety of recreational activities suggests the value of multipurpose helmets. 相似文献
34.
Traumatic anterior shoulder instability has been shown to be associated with a spectrum of capsulolabral pathology, including separation of the labrum (Bankart lesion), capsular rupture, and humeral avulsion of the glenohumeral ligaments (HAGL lesion). We describe a case of combined Bankart and HAGL lesions, a condition that has not been described before. Careful anatomic repair of both components of this bipolar capsular injury resulted in an excellent outcome. 相似文献
35.
36.
37.
Mandabach Mark G. M.D.Section Editor: Warner David O. M.D. Editor 《Anesthesiology》2005,103(5):1106-1107
38.
Hospital isolates of Enterobacter cloacae were analysed by polyacrylamide gel electrophoresis for enzyme polymorphism and the results were compared with established serotyping, phage typing and biotyping techniques. Initially, the diversity of electromorphs of 13 enzymes was determined on a representative set of 62 distinct strains. Two broad clusters of strains were found in the species, and analysis by serotype suggested a limited diversity within the most frequent O serotypes. A subset of three enzymes, lactate dehydrogenase, 6-phosphogluconate dehydrogenase, glutamate dehydrogenase and an unidentified marker, were selected and used to type groups of hospital isolates. There was good general agreement between the two systems, although the enzyme method failed to distinguish between some strains with the same serotype. This method provided useful epidemiological information and, in the absence of established typing systems, it is a practical approach to subdividing the species. 相似文献
39.
A Misbahuddin M R Placzek K R Chaudhuri N W Wood K P Bhatia T T Warner 《Neurology》2002,58(1):124-126
Abnormalities in dopamine neurotransmission are thought to underlie the generation of dystonic movements. The authors performed a case-control allelic association study in patients with the focal dystonia blepharospasm, using polymorphisms in the dopamine receptor and transporter genes. Allele 2 of a DRD5 dinucleotide repeat was significantly associated with blepharospasm. This may indicate a pathogenic role for this receptor. 相似文献
40.
Abstract We previously demonstrated that cytomegalovirus (CMV) infection enhanced perivascular inflammation in rat aortic allografts. In this study, we investigated the relationship between the CMV infection load and the magnitude of perivasculitis (chronic rejection) in aortic transplants. Rats received or-thotopic abdominal aortic grafts, different degrees of total body irradiation (TBI) for immunosuppres-sion and CMV inoculation. The spleens of the rats receiving 5 Gy of TBI contained more infectious virus and viral antigens than those of rats receiving 3 Gy of TBI or no TBI. Although the number of inflammatory cells infiltrating the perivascular area was decreased after TBI, CMV infection resulted in increased perivasculitis in rats that received 5 Gy of TBI as compared to non-infected animals. This virus-induced effect was characterized predominantly by an increased T-cell infiltration, including CD4 and CD8 T-cells. It is concluded that an enhanced systemic CMV infection during severe immunosuppressive therapy can accelerate the development of chronic rejection, which seems to be mediated mainly by T-cells. 相似文献