全文获取类型
收费全文 | 310篇 |
免费 | 9篇 |
国内免费 | 2篇 |
专业分类
耳鼻咽喉 | 1篇 |
儿科学 | 4篇 |
妇产科学 | 46篇 |
基础医学 | 12篇 |
口腔科学 | 3篇 |
临床医学 | 15篇 |
内科学 | 100篇 |
皮肤病学 | 19篇 |
神经病学 | 6篇 |
特种医学 | 26篇 |
外科学 | 56篇 |
综合类 | 6篇 |
预防医学 | 15篇 |
眼科学 | 4篇 |
肿瘤学 | 8篇 |
出版年
2016年 | 5篇 |
2015年 | 4篇 |
2013年 | 6篇 |
2012年 | 10篇 |
2011年 | 13篇 |
2010年 | 8篇 |
2009年 | 4篇 |
2008年 | 3篇 |
2007年 | 10篇 |
2006年 | 6篇 |
2005年 | 4篇 |
2004年 | 6篇 |
2003年 | 3篇 |
2002年 | 4篇 |
2001年 | 3篇 |
2000年 | 5篇 |
1999年 | 5篇 |
1998年 | 4篇 |
1997年 | 3篇 |
1996年 | 3篇 |
1995年 | 8篇 |
1994年 | 6篇 |
1993年 | 10篇 |
1992年 | 3篇 |
1991年 | 4篇 |
1990年 | 6篇 |
1989年 | 5篇 |
1988年 | 5篇 |
1987年 | 5篇 |
1986年 | 7篇 |
1985年 | 6篇 |
1984年 | 7篇 |
1983年 | 6篇 |
1982年 | 3篇 |
1981年 | 8篇 |
1980年 | 5篇 |
1979年 | 3篇 |
1975年 | 9篇 |
1973年 | 5篇 |
1971年 | 4篇 |
1968年 | 17篇 |
1967年 | 5篇 |
1966年 | 5篇 |
1965年 | 5篇 |
1964年 | 8篇 |
1962年 | 7篇 |
1961年 | 3篇 |
1947年 | 3篇 |
1941年 | 4篇 |
1937年 | 3篇 |
排序方式: 共有321条查询结果,搜索用时 31 毫秒
1.
2.
3.
W. G. Selley FDS Hon FCST R. E. Ellis MPhil F. C. Flack PhD C. R. Bayliss MB B Chir FRCR V. R. Pearce MB FRCP 《Dysphagia》1994,9(3):162-167
Simultaneous recording of adult subjects sipping small amounts of fluid from a cup have been obtained by videofluoroscopy together with feeding respiratory patterns and swallow sounds from the Exeter Dysphagia Assessment Technique (EDAT). These allowed visual representations of respiration and swallow sounds to be superimposed on a videofluoroscopy recording using a split-screen technique. Sequentially numbered, 1/50 sec, half-frame photographic prints were examined and schematic drawings of the relevant radiographs were made. These were superimposed on to the actual EDAT printed chart of the same swallow event, theri exact time relationship with respiration and cervical swallow sounds being preserved. The results allow events in the barium videofluoroscopy to be related to events in the feeding respiratory pattern and swallow sounds recorded by EDAT. 相似文献
4.
Dr. D. M. Sibbering F.R.C.S. A. P. Locker F.R.C.S. J. D. Hardcastle M.A. M.Chir. F.R.C.S. F.R.C.P. N. C. Armitage D.M. F.R.C.S. 《Diseases of the colon and rectum》1994,37(4):358-363
PURPOSE: This study examined the effect of blood transfusion on the prognosis of patients undergoing surgery for colorectal cancer. METHODS: Potentially curative resections for colorectal cancer were performed in 266 patients who were followed prospectively, with a minimum follow-up of 41 months. They were divided into transfused (n=121) and nontransfused (n=145) groups according to their perioperative blood transfusion requirements. RESULTS: There were significantly more rectal tumors (χ2=9.5, df=1, P=0.002) and fixed tumors (χ 2 =4.5, df=1,P=0.03) in the transfused group. There was no statistically significant difference between the two groups with regard to recurrence-free survival (χ 2 =1.1, df=1,P=0.3) and overall survival (χ 2 =2.8, df=1,P=0.09). CONCLUSION: In this study we have found no statistically significant effect of perioperative blood transfusion on the prognosis of colorectal cancer patients. 相似文献
5.
J. R. Sewell M.B.B. Chir. M.R.C.P. B. Liyanage M.B.B.S. M.R.C.P. F.R.C.R. B. M. Ansell M.D. F.R.C.P. 《Skeletal radiology》1978,3(3):137-143
A retrospective study of the radiographs and clinical records of 39 children with dermatomyositis, followed up at a referral centre for a mean period of eight years, revealed calcinosis in 29 children (18 giris, 11 boys). Clinical presentation of calcinosis was unpredictable and variable, ranging from four months to 12 years after onset of disease. Subcutaneous calcilication, often associated with subsequent ulceration of overlying skin, was observed more frequently than calcinosis in intermuscular fascial planes (29:7). Subcutaneous calcinosis was demonstrated most commonly about the knees and elbows and in the fingers and toes. Intermuscular calcinosis affected the fascial planes around the quadriceps, deltoid, biceps, and the gastrocnemius/soleus muscles.Calcinosis, predominantly of the subcutaneous lesions, regressed spontaneously in eight of 11 children where this could be assessed over a one to four year period. This high rate of spontaneous resolution must complicate evaluation of the efficacy of proposed anti-calcinotic treatments in juvenile dermatomyositis.While no apparent relationship was established between subcutaneous calcinosis, which was present in all 29 of the affected patients, and disease activity or severity, all seven children with the additional, extensive, and classical intermuscular fascial plane calcification developed this complication early and had severe disease.These findings are discussed in relation to previous studies. 相似文献
6.
7.
8.
9.
PURPOSE: Patients with fecal incontinence not amenable to simple repair may have to undergo major reconstructive surgery or resort to a stoma. Sacral nerve stimulation is an alternative approach that may diminish incontinence by altering sphincter and rectal motor function. This study is the first double-blind trial examining the effectiveness of this therapy. METHODS: Two patients with passive fecal incontinence who had been implanted for nine months with a permanent sacral nerve stimulator and electrode were studied using fecal incontinence diaries, anorectal physiological tests, and quality-of-life assessments (SF-36 health survey). The trial period consisted of two two-week periods, with the stimulator turned on for two weeks and off for two weeks. The main investigator and the patients were blinded to the status of the stimulator. RESULTS: There was a dramatic difference between the number and severity of episodes of incontinence when the stimulator was turned onvs. turned off (Patient 1, 20vs. 2 episodes; Patient 2, 4vs. 0 episodes; offvs. on). There was an increase in squeeze pressure (Patient 1, 70vs. 100 cm H2O; Patient 2, 60vs. 90 cm H2O; offvs. on), with moderate increases in resting pressure and rectal threshold and urge volumes. Quality-of-life measurements showed a marked improvement prestimulationvs. nine months after permanent stimulation. CONCLUSIONS: There is a marked, unequivocal improvement in symptoms of fecal incontinence with sacral nerve stimulation shown in this double-blind crossover trial. Sacral nerve stimulation improves the quality of life in selected patients with fecal incontinence.A grant and all the equipment used in this study were supplied by Medtronic INTERSTIM, Maastricht, the Netherlands. 相似文献
10.