全文获取类型
收费全文 | 307篇 |
免费 | 23篇 |
国内免费 | 7篇 |
专业分类
儿科学 | 8篇 |
妇产科学 | 4篇 |
基础医学 | 43篇 |
口腔科学 | 4篇 |
临床医学 | 23篇 |
内科学 | 56篇 |
皮肤病学 | 1篇 |
神经病学 | 10篇 |
特种医学 | 43篇 |
外科学 | 61篇 |
综合类 | 22篇 |
预防医学 | 12篇 |
眼科学 | 8篇 |
药学 | 25篇 |
肿瘤学 | 17篇 |
出版年
2023年 | 5篇 |
2019年 | 2篇 |
2017年 | 2篇 |
2016年 | 4篇 |
2015年 | 9篇 |
2014年 | 6篇 |
2013年 | 6篇 |
2012年 | 9篇 |
2011年 | 11篇 |
2010年 | 4篇 |
2009年 | 9篇 |
2008年 | 12篇 |
2007年 | 9篇 |
2006年 | 7篇 |
2005年 | 8篇 |
2004年 | 12篇 |
2003年 | 2篇 |
2002年 | 7篇 |
2001年 | 7篇 |
2000年 | 7篇 |
1999年 | 6篇 |
1998年 | 14篇 |
1997年 | 4篇 |
1996年 | 11篇 |
1995年 | 14篇 |
1994年 | 11篇 |
1993年 | 9篇 |
1992年 | 8篇 |
1991年 | 6篇 |
1990年 | 7篇 |
1989年 | 8篇 |
1988年 | 13篇 |
1987年 | 5篇 |
1986年 | 6篇 |
1985年 | 9篇 |
1984年 | 5篇 |
1983年 | 4篇 |
1982年 | 7篇 |
1981年 | 2篇 |
1980年 | 4篇 |
1979年 | 5篇 |
1978年 | 7篇 |
1977年 | 11篇 |
1976年 | 3篇 |
1975年 | 7篇 |
1974年 | 2篇 |
1973年 | 2篇 |
1972年 | 2篇 |
1971年 | 2篇 |
1968年 | 3篇 |
排序方式: 共有337条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
Oscillatory motion of the normal cervical spinal cord 总被引:2,自引:0,他引:2
5.
Life expectancy in British Marfan syndrome populations 总被引:2,自引:0,他引:2
JR Gray AB Bridges RR West L. McLeish AG Stuart JCS Dean MEM Porteous M. Boxer SJ Davies 《Clinical genetics》1998,54(2):124-128
A total of 206 patients with Marfan syndrome were ascertained throughout genetic clinics in Wales and Scotland during the period 1970–1990. There were 45 deaths representing 22% of the cohort. Mean age at death was 45.3 ± 16.5 years. 50% median cumulative survival in the total cohort (n = 206) was 53 years for males and 72 years for females. Multivariate analysis confirmed severity as the best independent indicator of survival. These findings and survival curves will assist in the counselling of British families and individuals with Marfan syndrome. 相似文献
6.
7.
I. Bertoncello T. R. Bradley J. J. Campbell A. J. Day I. A. McDonald G. R. McLeish M. A. Quinn R. Rome G. S. Hodgson 《British journal of cancer》1982,45(6):803-811
114 biopsy specimens from 70 patients with ovarian carcinoma at all stages of disease were submitted for assessment of clonogenic capacity in agar. A highly significant correlation was found between agar clonogenicity and patient survival after biopsy. However, problems related to inherent tumour heterogeneity, quality of sample and tissue disaggregation indicate that this technique may have limited applicability in the routine assessment of patients. Only 41 biopsy specimens (36%) from 31 patients (44.3%) complied with the prerequisite criteria for agar clonogenic assessment, namely: (a) the confirmed presence of malignant cells in the biopsy, (b) the ability to prepare a single-cell suspension, and (c) adequate viable cell numbers for assay. Furthermore, although the dominant patterns of agar clonogenic growth could be identified and correlated with stage of disease, the heterogeneity in both initial clonogenic capacity and "self-renewal" capacity assessed by the ability of primary clones to propagate in liquid culture and reclone in agar was too inconsistent for the assay to be used as a prognostic index for the individual patient. 相似文献
8.
Selection of patients for bile diversion surgery: use of bile acid measurement in fasting gastric aspirates 总被引:4,自引:0,他引:4 下载免费PDF全文
Eighteen patients with dyspepsia and vomiting which followed surgery for peptic ulcer have completed a study to examine the role of diverting bile from the stomach by a Roux-en-Y procedure. Bile regurgitation and mild epigastric pain relieved by vomiting were abolished. Measurements of bile acids in the fasting gastric aspirate were useful in predicting the outcome of surgery; good results were obtained when initially there was reflex into the stomach of more than 120 mumol/hour of bile acids. A wider group of patients than those selected in previous series may benefit from this operation, as good results can be obtained in patients with dyspepsia relieved by alkali and without achlorhydria or gastritis. Endoscopy was repeated one year after Roux-en-Y operation. Erythema of the mucosa was improved, but gastritis did not improve. 相似文献
9.