全文获取类型
收费全文 | 13603篇 |
免费 | 922篇 |
国内免费 | 8篇 |
学科分类
医药卫生 | 14533篇 |
出版年
2023年 | 80篇 |
2022年 | 59篇 |
2021年 | 276篇 |
2020年 | 205篇 |
2019年 | 322篇 |
2018年 | 347篇 |
2017年 | 251篇 |
2016年 | 279篇 |
2015年 | 283篇 |
2014年 | 411篇 |
2013年 | 592篇 |
2012年 | 932篇 |
2011年 | 898篇 |
2010年 | 510篇 |
2009年 | 515篇 |
2008年 | 846篇 |
2007年 | 907篇 |
2006年 | 881篇 |
2005年 | 886篇 |
2004年 | 791篇 |
2003年 | 822篇 |
2002年 | 727篇 |
2001年 | 193篇 |
2000年 | 200篇 |
1999年 | 171篇 |
1998年 | 157篇 |
1997年 | 120篇 |
1996年 | 131篇 |
1995年 | 88篇 |
1994年 | 85篇 |
1993年 | 83篇 |
1992年 | 96篇 |
1991年 | 92篇 |
1990年 | 90篇 |
1989年 | 101篇 |
1988年 | 73篇 |
1987年 | 82篇 |
1986年 | 63篇 |
1985年 | 78篇 |
1984年 | 66篇 |
1983年 | 60篇 |
1982年 | 71篇 |
1981年 | 54篇 |
1980年 | 44篇 |
1979年 | 41篇 |
1978年 | 47篇 |
1977年 | 34篇 |
1974年 | 36篇 |
1971年 | 35篇 |
1970年 | 37篇 |
排序方式: 共有10000条查询结果,搜索用时 734 毫秒
1.
2.
R. Foley P. Kelly S. Gatault F. Powell 《Journal of the European Academy of Dermatology and Venereology》2021,35(1):62-72
Demodex mites are microscopic arachnids found in the normal skin of many mammals. In humans, it is well established that Demodex mite density is higher in patients with the skin condition rosacea, and treatment with acaricidal agents is effective in resolving symptoms. However, pathophysiology of rosacea is complex and multifactorial. In dogs, demodicosis is a significant veterinary issue, particularly the generalized form of the disease which can be fatal if untreated. In each species, clinical and molecular studies have shown that the host’s immunological interactions with Demodex mites are an important, but not fully understood, aspect of how Demodex can live in the skin either as a harmless commensal organism or as a pathogenic agent. This review outlines the role of Demodex mites in humans and dogs, considering morphology, prevalence, symptoms, diagnosis, histology treatment and pathogenesis. 相似文献
3.
4.
5.
6.
Janet Fricke Carolyn Unsworth Diane Worrell 《Australian Occupational Therapy Journal》1993,40(1):7-15
This paper reports an inter-rater reliability study on the Functional Independence Measure (FIM). The FIM measures inpatient burden of care, as reflected in 18 self care items, rated on a seven point scale from dependent to independent. The subjects were 40 occupational therapists, divided according to experience with the FIM and randomly assigned to a FIM training or non-training group. Subjects rated video tapes of four stroke patients on transfers, bathing, dressing, grooming, toileting and eating items from the FIM. Rater consensus was calculated using the intraclass correlation coefficient (ICC), percentage agreement and a measure of disagreement. Rating accuracy was measured by comparisons with an expert rater. Ratings were most reliable when done by clinicians with no prior FIM experience, from the FIM training group. It is strongly recommended that all clinicians undergo FIM training before using this tool to ensure acceptable reliability. 相似文献
7.
8.
9.
PT Foley A Ganeshan S Anthony R Uberoi 《Journal of Medical Imaging and Radiation Oncology》2010,54(1):9-16
This is a retrospective review of the results at our institution of using multi-detector CT angiography (CTA) to localise lower gastrointestinal (GI) bleeding. We hypothesised that in our patient population: (i) CTA was unlikely to demonstrate bleeding in patients who were haemodynamically stable; (ii) in haemodynamically unstable patients in whom CTA was undertaken, the results could be used to select patients who would benefit from catheter angiography; and (iii) in haemodynamically unstable patients in whom CTA was undertaken, a subgroup of patients could be identified who would benefit from primary surgical treatment, avoiding invasive angiography completely. A retrospective review was conducted of the clinical records of all patients undergoing CTA for lower GI haemorrhage at our institution between 1 January 2005 and 30 June 2007. Out of the 20 patients examined, 10 had positive CTAs demonstrating the bleeding site. Nine were haemodynamically unstable at the time of the study. Four patients with positive CT angiograms were able to be treated directly with surgery and avoided invasive angiography. Ten patients had negative CTAs. Four of these were haemodynamically unstable, six haemodynamically stable. Only one required intervention to secure haemostasis, the rest stopped spontaneously. No haemodynamically stable patient who had a negative CTA required intervention. CTA is a useful non-invasive technique for localising the site of lower GI bleeding. In our patient population, in the absence of haemodynamic instability, the diagnostic yield of CTA was low and bleeding was likely to stop spontaneously. In haemodynamically unstable patients, a positive CTA allowed patients to be triaged to surgery or angiography, whereas there was a strong association between a negative CTA and spontaneous cessation of bleeding. 相似文献
10.
Safety and efficacy of bariatric surgery: Longitudinal Assessment of Bariatric Surgery 总被引:3,自引:0,他引:3
Steven H. Belle Ph.D. M.Sc.Hyg. Paul D. Berk M.D. Anita P. Courcoulas M.D. M.P.H. F.A.C.S. David R. Flum M.D. M.P.H. F.A.C.S. Carolyn W. Miles Ph.D. James E. Mitchell M.D. Walter J. Pories M.D. F.A.C.S. Bruce M. Wolfe M.D. F.A.C.S. Susan Z. Yanovski M.D. Longitudinal Assessment of Bariatric Surgery Consortium Writing Group 《Surgery for obesity and related diseases》2007,3(2):116-126