全文获取类型
收费全文 | 324篇 |
免费 | 21篇 |
国内免费 | 9篇 |
专业分类
耳鼻咽喉 | 1篇 |
儿科学 | 14篇 |
妇产科学 | 2篇 |
基础医学 | 27篇 |
口腔科学 | 7篇 |
临床医学 | 40篇 |
内科学 | 67篇 |
皮肤病学 | 20篇 |
神经病学 | 15篇 |
特种医学 | 35篇 |
外科学 | 21篇 |
综合类 | 54篇 |
预防医学 | 19篇 |
眼科学 | 5篇 |
药学 | 16篇 |
中国医学 | 1篇 |
肿瘤学 | 10篇 |
出版年
2022年 | 2篇 |
2020年 | 4篇 |
2018年 | 4篇 |
2017年 | 3篇 |
2016年 | 2篇 |
2015年 | 10篇 |
2014年 | 5篇 |
2013年 | 16篇 |
2012年 | 9篇 |
2011年 | 8篇 |
2010年 | 9篇 |
2009年 | 21篇 |
2008年 | 11篇 |
2007年 | 13篇 |
2006年 | 9篇 |
2005年 | 8篇 |
2004年 | 16篇 |
2003年 | 3篇 |
2002年 | 5篇 |
2001年 | 7篇 |
2000年 | 10篇 |
1999年 | 7篇 |
1998年 | 13篇 |
1997年 | 20篇 |
1996年 | 12篇 |
1995年 | 8篇 |
1994年 | 4篇 |
1993年 | 4篇 |
1992年 | 5篇 |
1991年 | 5篇 |
1990年 | 3篇 |
1989年 | 7篇 |
1988年 | 11篇 |
1987年 | 7篇 |
1986年 | 5篇 |
1985年 | 7篇 |
1984年 | 4篇 |
1983年 | 10篇 |
1982年 | 9篇 |
1981年 | 3篇 |
1980年 | 2篇 |
1979年 | 3篇 |
1977年 | 3篇 |
1975年 | 2篇 |
1967年 | 1篇 |
1965年 | 2篇 |
1958年 | 11篇 |
1957年 | 4篇 |
1952年 | 2篇 |
1951年 | 1篇 |
排序方式: 共有354条查询结果,搜索用时 15 毫秒
51.
TS RAGHU RAMAN AMIT DEVGAN SL SOOD ARVIND GUPTA B RAVICHANDER 《Medical Journal Armed Forces India》1998,54(3):191-195
In a prospective hospital based study, during the period from Jan 95 to Dec 96, 3100 consecutively delivered live newborns were studied for the incidence of low birth weight neonates and to evaluate the associated risk factors. One thousand fourteen newborns were classified as low birth weight babies. The incidence expressed per 1000 live births was 327 (32.7%). Of these, 815 (80.4%) were small for gestational age neonates and 199 (19.6%) were preterm neonates. Five hundred seventy small for gestational age neonates (70%) were weighing between 2001 to 2500 gms. Mothers belonging to the age group of 19-25 years delivered the maximum number of low birth weight babies (618/1014) and of these 82.8% were small for gestational age neonates. There were 48 neonates with low birth weight born to mothers below the age of 18 years. Primiparous mothers were found to contribute higher number of low birth weight neonates (414/1014). Spacing as a factor did not show any major difference. Two hundred sixty two low birth weight neonates were born to mothers with significant obstetrical problems such as pregnancy induced hypertension, bad obstetrical history and premature rupture of membranes. The incidence of 32.7% of low birth weight babies is high enough to ring alarm bells. 相似文献
52.
RM Bologa DM Levine TS Parker JS Cheigh D Serur KH Stenzel AL Rubin 《American journal of kidney diseases》1998,32(1):107-114
Low serum albumin and low serum cholesterol levels are among the most consistent predictors of mortality in patients with end-stage renal disease (ESRD) undergoing hemodialysis. Hypoalbuminemia is often interpreted as a marker of poor nutrition, but serum albumin and cholesterol levels can also be low as part of a cytokine-mediated acute-phase reaction to acute or chronic inflammation. Here we report the results from a 900-day prospective study designed to determine whether tumor necrosis factor-alfa (TNF-alpha) and interleukin-6 (IL-6) predict serum albumin and cholesterol levels and mortality in a group of 90 ambulatory, adult hemodialysis patients with no acute infection, hospitalization or surgery, and no known acquired immunodeficiency syndrome (AIDS), malignancy, or liver disease. Measurable levels of TNF-alpha and/or IL-6 were found in 89 of 90 patients. Significant relationships were found between TNF-alpha and IL-6 and the degree of hypoalbuminemia and dyslipoproteinemia. IL-6 was the strongest predictor of mortality in univariate and multivariate analysis, followed by age, albumin level, and body mass index (BMI). Although the cause of hypercytokinemia was not addressed in this study, the data support the view that hypoalbuminemia and hypocholesterolemia are negative acute-phase responses to inflammatory stimuli. These results suggest that efforts to identify the nature of the stimuli for cytokine production and to lower cytokine levels in hemodialysis patients might be effective in improving the survival of patients undergoing hemodialysis. 相似文献
53.
54.
55.
56.
57.
58.
Thirty-two patients with congenital neurosensory hearing loss demonstrated dilatation of the peripheral limb of the vestibular aqueduct as visualized on pluridirectional tomograms. Multiple additional anomalies involving most frequently the cochlea (15 patients) but also the ossicles (three patients) or vestibule (one patient) were associated. The axial-pyramidal (Poschl) projection was of great value in evaluation of the vestibular aqueduct and cochlea. The technique, clinical correlation, and surgical implications are discussed. 相似文献
59.
60.