全文获取类型
收费全文 | 7542篇 |
免费 | 592篇 |
国内免费 | 36篇 |
专业分类
耳鼻咽喉 | 91篇 |
儿科学 | 243篇 |
妇产科学 | 202篇 |
基础医学 | 930篇 |
口腔科学 | 128篇 |
临床医学 | 852篇 |
内科学 | 1567篇 |
皮肤病学 | 63篇 |
神经病学 | 756篇 |
特种医学 | 223篇 |
外科学 | 869篇 |
综合类 | 212篇 |
一般理论 | 11篇 |
预防医学 | 944篇 |
眼科学 | 136篇 |
药学 | 565篇 |
中国医学 | 3篇 |
肿瘤学 | 375篇 |
出版年
2023年 | 69篇 |
2022年 | 131篇 |
2021年 | 229篇 |
2020年 | 155篇 |
2019年 | 224篇 |
2018年 | 247篇 |
2017年 | 187篇 |
2016年 | 202篇 |
2015年 | 211篇 |
2014年 | 308篇 |
2013年 | 441篇 |
2012年 | 552篇 |
2011年 | 559篇 |
2010年 | 272篇 |
2009年 | 249篇 |
2008年 | 388篇 |
2007年 | 383篇 |
2006年 | 366篇 |
2005年 | 342篇 |
2004年 | 248篇 |
2003年 | 277篇 |
2002年 | 237篇 |
2001年 | 116篇 |
2000年 | 95篇 |
1999年 | 112篇 |
1998年 | 103篇 |
1997年 | 79篇 |
1996年 | 83篇 |
1995年 | 76篇 |
1994年 | 66篇 |
1993年 | 53篇 |
1992年 | 71篇 |
1991年 | 68篇 |
1990年 | 54篇 |
1989年 | 77篇 |
1988年 | 58篇 |
1987年 | 59篇 |
1986年 | 49篇 |
1985年 | 49篇 |
1984年 | 41篇 |
1983年 | 35篇 |
1982年 | 35篇 |
1981年 | 34篇 |
1979年 | 33篇 |
1978年 | 36篇 |
1977年 | 27篇 |
1976年 | 31篇 |
1974年 | 30篇 |
1972年 | 33篇 |
1967年 | 30篇 |
排序方式: 共有8170条查询结果,搜索用时 15 毫秒
1.
C. Lindsay DeVane 《Pharmacotherapy》2016,36(9):953-954
2.
Adrenal disorders in pregnancy. 总被引:1,自引:0,他引:1
3.
4.
5.
6.
7.
J. T. Lindsay Wilson 《Brain injury : [BI]》1990,4(4):349-363
Studies relating neuropsychology and structural neuroimaging after closed head injury are reviewed. Particular attention is given to the question of the relative contribution of focal and diffuse damage to neuropsychological impairment. The evidence currently available emphasizes the importance of diffuse damage in closed head injury. Diffuse damage is not equally distributed in the brain, and the review suggests three axes that are relevant for neuropsychological function: (1) damage may be unilateral or bilateral, (2) damage is characteristically greater in anterior regions than posterior regions, and (3) damage shows a centripetal gradient. A large gap remains between the emergent generalizations concerning head injury and reliable neuropsychological interpretation of scans from individual patients. 相似文献
8.
Sabine Maguire Bruce Hunter Lindsay Hunter Jo Richard Sibert Mala Mann Alison Mary Kemp 《Archives of disease in childhood》2007,92(12):1113-1117
INTRODUCTION: A torn labial frenum is widely regarded as pathognomonic of abuse. METHODS: We systematically reviewed the evidence for this, and to define other intra-oral injuries found in physical abuse. Nine studies documented abusive torn labial frena in 27 children and 24 [corrected] were fatally abused: 22 were less than 5 years old. Only a direct blow to the face was substantiated as a mechanism of injury. RESULTS: Two studies noted accidentally torn labial frena, both from intubation. Abusive intra-oral injuries were widely distributed to the lips, gums, tongue and palate and included fractures, intrusion and extraction of the dentition, bites and contusions. CONCLUSIONS: Current literature does not support the diagnosis of abuse based on a torn labial frenum in isolation. The intra-oral hard and soft tissue should be examined in all suspected abuse cases, and a dental opinion sought where abnormalities are found. 相似文献
9.
10.
Bone mass and body composition in normal women. 总被引:18,自引:0,他引:18
R Lindsay F Cosman B S Herrington S Himmelstein 《Journal of bone and mineral research》1992,7(1):55-63
The interrelationships between measurements of bone mass and total-body bone mineral were examined in a cross-sectional study of normal healthy women aged 17-82 years. In addition we evaluated the relationship between measures of body composition, estimated by four independent techniques, and bone mass in the same population. Considering the group as a whole, bone mass at all sites correlated with each other and with total-body bone mineral (TBBM). Cancellous and cortical sites could predict TBBM equally well. As expected, all measurements of bone mass were significantly lower in postmenopausal women in comparison to premenopausal women. Declines in bone mass were only seen in premenopausal women in the femoral neck and Ward's triangle, not in lumbar spine, radius, or skeleton as a whole. In postmenopausal women bone mass correlated negatively with age and years from menopause equally at all sites. TBBM was significantly related to height and weight in both premenopausal and postmenopausal women. In premenopausal and postmenopausal women TBBM also correlated with fat mass, but TBBM was much better correlated with percentage body fat in premenopausal than postmenopausal women. TBBM was a constant proportion of lean body mass in premenopausal women, but the fraction of lean mass occupied by the skeleton declined with age in postmenopausal women. Correction of TBBM for lean mass did not change the relationship between TBBM and percentage fat in premenopausal women but eliminated the relationship in postmenopausal women. Regional measurements, which are at least partially corrected for body size by dividing mass by area, correlated less well with height and weight and with any index of obesity, especially in postmenopausal women. 相似文献