全文获取类型
收费全文 | 1147篇 |
免费 | 108篇 |
国内免费 | 10篇 |
专业分类
耳鼻咽喉 | 6篇 |
儿科学 | 39篇 |
妇产科学 | 6篇 |
基础医学 | 139篇 |
口腔科学 | 47篇 |
临床医学 | 102篇 |
内科学 | 345篇 |
皮肤病学 | 40篇 |
神经病学 | 64篇 |
特种医学 | 154篇 |
外国民族医学 | 1篇 |
外科学 | 72篇 |
综合类 | 41篇 |
预防医学 | 57篇 |
眼科学 | 5篇 |
药学 | 73篇 |
中国医学 | 1篇 |
肿瘤学 | 73篇 |
出版年
2022年 | 3篇 |
2021年 | 10篇 |
2020年 | 6篇 |
2019年 | 11篇 |
2018年 | 13篇 |
2017年 | 16篇 |
2016年 | 15篇 |
2015年 | 28篇 |
2014年 | 18篇 |
2013年 | 36篇 |
2012年 | 40篇 |
2011年 | 41篇 |
2010年 | 33篇 |
2009年 | 56篇 |
2008年 | 44篇 |
2007年 | 41篇 |
2006年 | 56篇 |
2005年 | 39篇 |
2004年 | 46篇 |
2003年 | 37篇 |
2002年 | 24篇 |
2001年 | 30篇 |
2000年 | 27篇 |
1999年 | 42篇 |
1998年 | 59篇 |
1997年 | 70篇 |
1996年 | 63篇 |
1995年 | 45篇 |
1994年 | 44篇 |
1993年 | 41篇 |
1992年 | 13篇 |
1991年 | 15篇 |
1990年 | 21篇 |
1989年 | 20篇 |
1988年 | 24篇 |
1987年 | 24篇 |
1986年 | 21篇 |
1985年 | 10篇 |
1984年 | 5篇 |
1983年 | 10篇 |
1982年 | 18篇 |
1981年 | 3篇 |
1980年 | 9篇 |
1979年 | 4篇 |
1978年 | 4篇 |
1977年 | 5篇 |
1976年 | 6篇 |
1975年 | 2篇 |
1968年 | 3篇 |
1959年 | 2篇 |
排序方式: 共有1265条查询结果,搜索用时 251 毫秒
1.
2.
3.
Ketai LH; Williamson MR; Telepak RJ; Levy H; Koster FT; Nolte KB; Allen SE 《Radiology》1994,191(3):665
4.
5.
6.
It has been known for some time that patients with Parkinson's disease (PD) have difficulty executing simultaneous motor acts, yet the pathophysiology underlying this impairment remains uncertain. We examined the possibility that these dual-task deficits stem from defective sensorimotor mechanisms producing interference between the motor programs underlying the two tasks. Patients with PD and normal control subjects were tested on their ability to maintain steady-state force with one hand while performing a force-reaction time task with the other hand. Although performance was worse on the dual-task than on the single-task condition for both subject groups, only the patients with PD demonstrated significant interference between the two tasks. The interference across tasks improved in 87% of the patients with PD when tested after treatment with carbidopa/levodopa (Sinemet). These findings support the contention that, in patients with PD, disturbances in the execution of simultaneous motor performance may be due to sensorimotor disinhibition. 相似文献
7.
The inflammatory and immune systems are abnormally activatedduring the acute phases of coronary atherosclerotic disease.1,2In particular, an unusual population of effector cells, lackingcostimulatory molecule CD28, is transiently expanded in parallelwith the occurrence of the waxing phases of atheroscleroticcoronary disease.3 The origin of the lymphocyte response in acute coronary syndromeshas been a matter of debate in the last decade. Questions stillovercome the answers. It has been demonstrated that the T-cellresponse can be directed to restricted antigens within the 相似文献
8.
S. van Ruth† EBL van Dorst‡ MR Canninga-van Dijk§ MS de Bruin-Weller† 《Journal of the European Academy of Dermatology and Venereology》2007,21(5):678-680
Cutaneous metastasis of vaginal carcinoma is extremely rare. So far, the total number of reported skin metastasis of vaginal carcinoma is only one. We present another case with an unusual manifestation of vagina carcinoma metastasis: skin metastasis presenting as a leg ulcer on the lower leg. 相似文献
9.
10.
Localization of a gene for otosclerosis to chromosome 15q25-q26 总被引:5,自引:0,他引:5
Tomek MS; Brown MR; Mani SR; Ramesh A; Srisailapathy CR; Coucke P; Zbar RI; Bell AM; McGuirt WT; Fukushima K; Willems PJ; Van Camp G; Smith RJ 《Human molecular genetics》1998,7(2):285-290
Among white adults otosclerosis is the single most common cause of hearing
impairment. Although the genetics of this disease are controversial, the
majority of studies indicate autosomal dominant inheritance with reduced
penetrance. We studied a large multi- generational family in which
otosclerosis has been inherited in an autosomal dominant pattern. Five of16
affected persons have surgically confirmed otosclerosis; the remaining nine
have a conductive hearing loss but have not undergone corrective surgery.
To locate the disease- causing gene we completed genetic linkage analysis
using short tandem repeat polymorphisms (STRPs) distributed over the entire
genome. Multipoint linkage analysis showed that only one genomic region, on
chromosome 15q, generated a lod score >2.0. Additional STRPs were typed
in this area, resulting in a lod score of 3.4. STRPs FES (centromeric) and
D15S657 (telomeric) flank the 14. 5 cM region that contains an otosclerosis
gene.
相似文献