全文获取类型
收费全文 | 1452篇 |
免费 | 125篇 |
国内免费 | 5篇 |
专业分类
耳鼻咽喉 | 5篇 |
儿科学 | 42篇 |
妇产科学 | 28篇 |
基础医学 | 214篇 |
口腔科学 | 28篇 |
临床医学 | 194篇 |
内科学 | 338篇 |
皮肤病学 | 36篇 |
神经病学 | 48篇 |
特种医学 | 180篇 |
外科学 | 124篇 |
综合类 | 49篇 |
预防医学 | 122篇 |
眼科学 | 7篇 |
药学 | 40篇 |
1篇 | |
肿瘤学 | 126篇 |
出版年
2022年 | 13篇 |
2021年 | 21篇 |
2020年 | 10篇 |
2019年 | 14篇 |
2018年 | 19篇 |
2017年 | 11篇 |
2016年 | 14篇 |
2015年 | 26篇 |
2014年 | 22篇 |
2013年 | 34篇 |
2012年 | 43篇 |
2011年 | 57篇 |
2010年 | 53篇 |
2009年 | 47篇 |
2008年 | 36篇 |
2007年 | 63篇 |
2006年 | 50篇 |
2005年 | 50篇 |
2004年 | 41篇 |
2003年 | 33篇 |
2002年 | 35篇 |
2001年 | 45篇 |
2000年 | 26篇 |
1999年 | 37篇 |
1998年 | 47篇 |
1997年 | 54篇 |
1996年 | 51篇 |
1995年 | 23篇 |
1994年 | 34篇 |
1993年 | 28篇 |
1992年 | 26篇 |
1991年 | 33篇 |
1990年 | 31篇 |
1989年 | 56篇 |
1988年 | 36篇 |
1987年 | 39篇 |
1986年 | 23篇 |
1985年 | 27篇 |
1984年 | 31篇 |
1983年 | 22篇 |
1982年 | 21篇 |
1981年 | 26篇 |
1980年 | 20篇 |
1979年 | 13篇 |
1978年 | 15篇 |
1977年 | 11篇 |
1976年 | 19篇 |
1974年 | 10篇 |
1972年 | 11篇 |
1969年 | 9篇 |
排序方式: 共有1582条查询结果,搜索用时 0 毫秒
51.
52.
Pugliese Joanne Boyce Mary C. Lawler Nathan G. Coumbaros John Le Thao T. 《Forensic Toxicology》2020,38(2):365-377
Forensic Toxicology - Dermorphin, growth hormone releasing peptide (GHRP), TB-500 and their analogues have been used illegally in the horse racing industry to improve the performance of the horses.... 相似文献
53.
Britta Wigginton Kim Farmer Sharon Kapambwe Lisa Fitzgerald Marina M. Reeves Sheleigh P. Lawler 《Health care for women international》2018,39(5):507-521
Cancer has become a global health concern with marked differences in the incidence and mortality rates between developing and developed countries. Understanding the factors that shape uptake of preventative and screening services is the key. We use in-depth interviews with 13 Zambian urban-based female cancer survivors to explore the facilitators and barriers to screening, diagnosis and treatment, with a particular focus on cultural influences. We identified a central theme (i.e. a story told about cancer) in all of the interviews: ‘cancer is a death sentence’. Most women referenced this theme to describe their own, their family members', or community members' reactions to their diagnosis, along with references to cancer as ‘contagious’ and ‘a shameful illness’. We also identified a theme entitled ‘survivors as advocates’, within which women described engaging in advocacy work to challenge stigma, misconceptions and misinformation about cancer; and advocating early detection and diagnosis, compliance with medical treatment and the sharing of success stories. This analysis points to the need for survivors to be front and center of preventative efforts. Their personal experiences, legitimacy and connections in the community, and their enthusiasm in helping others should be fostered, particularly in low-resource settings. 相似文献
54.
IgM associated primary diffuse mesangial proliferative glomerulonephritis. 总被引:2,自引:3,他引:2 下载免费PDF全文
Twenty-three cases of IgM associated primary diffuse mesangial proliferative glomerulonephritis are presented. In 18, IgM was the sole localising host immunoglobulin, and it was the predominant globulin in five; C3 was also present in 18. Light microscopy revealed variable diffuse and global mesangial proliferation in all cases, with additional focal global sclerosis in 16, focal segmental sclerosis in 15, and small capsular crescents in seven. Material for electron microscopy was available from 19 patients; in 13, occasional intramesangial electron dense deposits were identified, and in 18 there were irregular, rather ill defined areas of increased electron density in mesangial regions. Clinically, 14 patients presented with the nephrotic syndrome, and nine had asymptomatic proteinuria. During follow-up, only 10 patients showed no change in renal function or improved; the remainder showed increasing hypertension and/or renal function deterioration and four developed end stage renal failure. It is suggested that IgM associated mesangial proliferative glomerulonephritis should be considered as a distinct clinicoimmunopathological entity. 相似文献
55.
56.
Kazerounian S Duquette M Reyes MA Lawler JT Song K Perruzzi C Primo L Khosravi-Far R Bussolino F Rabinovitz I Lawler J 《Blood》2011,117(17):4658-4666
CD36 plays a critical role in the inhibition of angiogenesis through binding to the type 1 repeats of thrombospondin-1 (TSP-1) and activating Fyn tyrosine kinase and MAPK pathways. Here, we reveal a novel association of CD36 with VEGFR-2 and spleen tyrosine kinase (Syk). We also address the correlation between the expression of CD36 and Syk by demonstrating that overexpression of CD36 in HUVECs up-regulates endogenous Syk expression. We also define a new role for TSP-1 and CD36 in the activation of the VEGFR-2 signaling pathway that requires Syk. Our findings also identify a role for Syk as a stimulator of VEGF-A-induced angiogenesis by increasing phosphorylation of Y1175 in VEGFR-2, which is a major tyrosine for promoting VEGF-A-induced endothelial cell migration. Together, these studies introduce a new signaling pathway for TSP-1, CD36, and Syk, and address the role of these proteins in regulating the angiogenic switch. 相似文献
57.
58.
Bhattacharya S; MacLennan F; Hamilton MP; Templeton A 《Human reproduction (Oxford, England)》1997,12(7):1440-1442
Although the conventional method of pain relief during outpatient oocyte
recovery involves physician-administered drugs, patient- controlled
analgesia (PCA) offers an alternative technique with the potential to give
women more control over peroperative analgesia. We conducted a prospective
randomized study to compare the effect of fentanyl administered either
through a PCA delivery system or by a physician. Thirty-nine women were
randomized to PCA during egg collection while 42 were allocated to receive
intermittent doses administered by a physician. Pain was evaluated by means
of a 100 mm linear analogue scale. The mean (SD) pain score in the PCA
group was 38.5 (19.8) while in the other group it was 46.1 (21.3) (P =
0.1). In the PCA group, 64% of women felt very satisfied with their
analgesia as compared with 57% in the non-PCA group (P = 0.6). Among the
PCA users, 39% of demands were successful. Significantly more fentanyl
(97.5 microg) was used in the PCA group than in the other group (84.6
microg) (P = 0.03). Though intraoperative PCA with fentanyl is an effective
alternative to physician-administered techniques, many women still feel the
need for more analgesia during the procedure.
相似文献
59.
60.