首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   568篇
  免费   25篇
  国内免费   9篇
耳鼻咽喉   6篇
儿科学   10篇
妇产科学   5篇
基础医学   111篇
口腔科学   6篇
临床医学   56篇
内科学   87篇
皮肤病学   11篇
神经病学   55篇
特种医学   30篇
外科学   48篇
综合类   2篇
预防医学   30篇
眼科学   73篇
药学   40篇
肿瘤学   32篇
  2021年   15篇
  2020年   8篇
  2019年   13篇
  2018年   20篇
  2017年   10篇
  2016年   23篇
  2015年   15篇
  2014年   22篇
  2013年   34篇
  2012年   24篇
  2011年   30篇
  2010年   13篇
  2009年   13篇
  2008年   19篇
  2007年   21篇
  2006年   25篇
  2005年   22篇
  2004年   12篇
  2003年   18篇
  2002年   10篇
  2001年   13篇
  2000年   6篇
  1999年   8篇
  1998年   4篇
  1995年   4篇
  1992年   5篇
  1991年   7篇
  1990年   5篇
  1989年   8篇
  1988年   4篇
  1986年   4篇
  1985年   8篇
  1983年   4篇
  1982年   5篇
  1979年   4篇
  1977年   4篇
  1976年   5篇
  1975年   4篇
  1974年   4篇
  1972年   4篇
  1971年   3篇
  1970年   6篇
  1969年   5篇
  1968年   5篇
  1965年   4篇
  1940年   12篇
  1938年   21篇
  1935年   17篇
  1933年   4篇
  1932年   3篇
排序方式: 共有602条查询结果,搜索用时 197 毫秒
1.
2.
3.
We examined quality of life (QoL) and other patient-reported outcome measures (PROMs) in 95 simultaneous pancreas and kidney transplant (SPKT) recipients and 41 patients wait-listed for SPKT recruited to the UK Access to Transplantation and Transplant Outcome Measures (ATTOM) programme. Wait-listed patients transplanted within 12 months of recruitment (n = 22) were followed 12 months post-transplant and compared with those still wait-listed (n = 19) to examine pre- to post-transplant changes. Qualitative interviews with ten SPKT recipients 12 months post-transplant were analysed thematically. Cross-sectional analyses showed several better 12-month outcomes for SPKT recipients compared with those still wait-listed, a trend to better health utilities but no difference in diabetes-specific QoL or diabetes treatment satisfaction. Pre- to post-transplant, SPKT recipients showed improved treatment satisfaction, well-being, self-reported health, generic QoL and less negative impact on renal-specific QoL (ps < 0.05). Health utility values were better overall in transplant recipients and neither these nor diabetes-specific QoL changed significantly in either group. Pre-emptive transplant advantages seen in 12-month cross-sectional analyses disappeared when controlling for baseline values. Qualitative findings indicated diabetes complications, self-imposed blood glucose monitoring and dietary restrictions continued to impact QoL negatively post-transplant. Unrealistic expectations of SPKT caused some disappointment. Measuring condition-specific PROMs over time will help in demonstrating the benefits and limitations of SPKT.  相似文献   
4.
Objectives To investigate at what time the peak level should be determined under conventional thrice daily (t.i.d.) administration of the aminoglycoside netilmicin and to study its serum concentrations under once daily (od) treatment to define the required daily dose and to gain information about convenient drug monitoring.Design The design of the study was a consecutive sample trial.Setting The study took place in a university hospital.Patients 41 intubated patients of a surgical ICU who received netilmicin as a short-term infusion over 30 min for life-threatening infections were included in the study.Interventions In 21 patients netilmicin was administered t.i.d. The virtual peak levels which had been determined by pharmacokinetic dosage calculation were compared with the serum concentrations obtained directly after the administration as well as after 15, 30, 60 and 180 min. In 20 patients the netilmicin serum concentrations during od treatment were determined directly before and immediately after the application as well as 0.5, 1, 3, 7 and 12 h later. To achieve a virtual peak level of 25 mg/l and a trough level of 0.5 mg/l individual adjustment of the dosage based on pharmacokinetic calculations was performed.Measurements and results In t.i.d. treatment the serum concentration measured after 30 min was closest to the virtual peak level; therefore, this is the best time to determine the peak level. In od treatment the required daily dose was 7.86 mg/kg body weight (median) in patients with normal renal function. During od dosing the trough level was extremely important in drug monitoring, whereas determination of the high peak level was of doubtful value.Conclusions The peak level should be determined during t.i.d. administration at 30 min. In od treatment the initial daily dose should be 7 mg/kg body weight; in drug monitoring the trough level is very important.  相似文献   
5.
Discussion of an overlap between specific language impairment (SLI) and autism spectrum disorder (ASD) is on going. The most intriguing overlap between both phenotypes is the similarity in the observed language deficits described in SLI and a subgroup of ASD with co-occurring linguistic impairment, ASD-LI. Examining whether a similar neuroanatomical substrate underlies this phenotypical linguistic overlap, we studied the white matter microstructural properties of the superior longitudinal fascicle (SLF) of 19 ASD-LI adolescents (mean age 13.8 ± 1.6 years) and 21 age-matched controls and compared them with 13 SLI children (mean age 10.1 ± 0.4 years) and 12 age-matched controls. A linguistic profile assessment and a diffusion tensor imaging analysis of the SLF were performed. Linguistic testing revealed a mixed receptive-expressive disorder profile in both groups, confirming their overlap at phenotypical level. At neuroanatomical level, no significant differences in mean SLF fractional anisotropy (FA) and mean SLF apparent diffusion coefficient values between ASD-LI participants and controls were seen. By contrast, the mean SLF FA was significantly reduced in the SLI children as compared with their controls. The observation of structural SLF disturbances in SLI but not in ASD-LI suggests the existence of a different neuroanatomical substrate for the language deficits in both disorders.  相似文献   
6.
The authors assessed the use of distal third radius dual energy X-ray absorptiometry (DXA) concomitantly with central (hip and lumbar spine) DXA to identify men with osteopenia or osteoporosis receiving androgen deprivation therapy (ADT) for prostate cancer. Initial classification with central DXA demonstrated 60 (17%) normal, 187 (55%) osteopenic, and 96 (28%) osteoporotic patients. Sixteen of 60 (27%) normal patients were reclassified as osteopenic (14) or osteoporotic (2), and 20 of 187 (11%) osteopenic patients were reclassified as osteoporotic with the combination of central DXA plus distal third radius DXA. The difference in reclassification was statistically significant. The addition of distal third radius to central DXA scanning in men with bone loss associated with ADT identifies a statistically significant number of men being reclassified as having osteopenia or osteoporosis. Combined central and distal third radius DXA scanning should be considered routine in the evaluation of all men suspected of bone loss associated with ADT. This has specific significant clinical relevance because of the large number of men with nonevaluable central DXA studies. Fracture risk prediction and treatment recommendations based on this reclassification will need to be determined by follow-up studies.  相似文献   
7.
8.
9.
10.
Abstract: A teenager with atopic dermatitis presented with a 12‐month history of recurrent, pruritic, round and polygonal patches on her face. Patch tests using the European standard series (including nickel, chromium, and cobalt chloride), a plastic and glue series of allergens, polyester components, and personal and environmental products in contact with the patient were conducted. For the patient and 3 of 14 healthy volunteers, positive reactions were observed to the patient’s mobile phone touchscreen (TS), an extract solution from the TS, and a non‐TS phone of another brand. Accordingly, the patient’s dermatitis disappeared when contact with mobile phone screens was avoided.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号