全文获取类型
收费全文 | 929篇 |
免费 | 76篇 |
国内免费 | 7篇 |
专业分类
耳鼻咽喉 | 3篇 |
儿科学 | 34篇 |
妇产科学 | 25篇 |
基础医学 | 154篇 |
口腔科学 | 34篇 |
临床医学 | 79篇 |
内科学 | 217篇 |
皮肤病学 | 18篇 |
神经病学 | 34篇 |
特种医学 | 121篇 |
外科学 | 113篇 |
综合类 | 33篇 |
预防医学 | 43篇 |
眼科学 | 7篇 |
药学 | 51篇 |
中国医学 | 1篇 |
肿瘤学 | 45篇 |
出版年
2021年 | 19篇 |
2020年 | 7篇 |
2018年 | 20篇 |
2017年 | 9篇 |
2016年 | 17篇 |
2015年 | 16篇 |
2014年 | 22篇 |
2013年 | 36篇 |
2012年 | 40篇 |
2011年 | 29篇 |
2010年 | 36篇 |
2009年 | 33篇 |
2008年 | 22篇 |
2007年 | 23篇 |
2006年 | 35篇 |
2005年 | 20篇 |
2004年 | 16篇 |
2003年 | 26篇 |
2002年 | 17篇 |
2001年 | 20篇 |
2000年 | 19篇 |
1999年 | 26篇 |
1998年 | 40篇 |
1997年 | 27篇 |
1996年 | 26篇 |
1995年 | 17篇 |
1994年 | 24篇 |
1993年 | 27篇 |
1992年 | 14篇 |
1991年 | 9篇 |
1990年 | 8篇 |
1989年 | 21篇 |
1988年 | 23篇 |
1987年 | 11篇 |
1986年 | 24篇 |
1985年 | 10篇 |
1984年 | 12篇 |
1983年 | 12篇 |
1982年 | 12篇 |
1981年 | 15篇 |
1980年 | 15篇 |
1978年 | 12篇 |
1977年 | 18篇 |
1976年 | 19篇 |
1975年 | 15篇 |
1974年 | 14篇 |
1973年 | 11篇 |
1972年 | 8篇 |
1967年 | 8篇 |
1965年 | 7篇 |
排序方式: 共有1012条查询结果,搜索用时 31 毫秒
1.
2.
3.
BARI NUHOLU ALI AYYILDIZ VECIHI FIDAN ÖZDEN CEBECI UUR KOAR CANKON GERMIYANOLU 《International journal of urology》2006,13(2):109-110
OBJECTIVE: Nocturnal enuresis is a common pediatric problem, the etiology of which is unclear. In recent years, various studies have been published stating that children with nocturnal enuresis exhibit growth and skeletal maturation retardation. METHODS: In this cross-sectional study, we included 27 patients (16 boys, 11 girls) between the ages of 6 and 14 years who had presented with primary nocturnal enuresis (PNE) complaints. We included in the evaluation 19 healthy subjects (12 boys, 7 girls), who were the siblings of the children with PNE, as the control group. RESULTS: The patients in both groups were similar in chronological age, bone age, height and weight, with no significant difference between groups (P>0.05). CONCLUSION: The two groups in our study consisted of the same genetic background. Thus, our results were found to be different from the previous studies. We have concluded that there is no direct relationship between enuresis nocturnal and skeletal maturation. 相似文献
4.
5.
6.
7.
8.
Serum ionic fluoride levels in haemodialysis and continuous ambulatory peritoneal dialysis patients 总被引:1,自引:1,他引:0
al-Wakeel JS; Mitwalli AH; Huraib S; al-Mohaya S; Abu-Aisha H; Chaudhary AR; al-Majed SA; Memon N 《Nephrology, dialysis, transplantation》1997,12(7):1420-1424
High serum fluoride (F-) in patients with chronic renal failure (CRF) and
end-stage renal disease (ESRD) is associated with risk of renal
osteodystrophy and other bone changes. This study was done to determine F-
in normal healthy controls and patients with ESRD on haemodialysis (HD) or
peritoneal dialysis (PD). Seventeen healthy controls (12 males, 5 females)
and 39 ESRD patients on dialysis (17 males, 22 females) were recruited in
the study in a community with 47.4 +/- 3.28 microM/l (range 44-51 microM/l)
of F- content in drinking water. Control subjects showed a mean serum F-
concentration of 1.08 +/- 0.350 microM/l. Males in control group showed
slightly higher F- levels (1.15 +/- 0.334, range 0.55-1.9 microM/l) than
females (0.92 +/- 0.370, range 0.6-1.5 microM/l). Mean serum F-
concentration did not correlate significantly with age and sex among
control subjects, whereas such correlation was observed in patients with
ESRD on dialysis. Mean serum F- concentration was significantly higher in
patients on dialysis (2.67 +/- 1.09, range 0.8-5.2 microM/l) than normal
controls. When grouped according to sex, the mean serum F- concentration in
males (3.05 +/- 1.04, range 1.8-5.2 microM/l) was significantly higher than
females (2.38 +/- 1.08, range 0.8-5.2 microM/l). When patients were grouped
according to age, it was observed that F- concentration was significantly
higher in patients with age groups 21-70 (2.86 +/- 1.05) than those with
age group 13-20 years (1.42 +/- 0.531). Thus F- concentration correlated
with age and sex, being higher in males and above 20 years. Despite
appreciable clearance of F- (39-90%) across the peritoneum, patients on
CAPD showed higher serum F- concentration than those on HD (3.1 +/- 1.97 vs
2.5 +/- 1.137 microM/l). Of the total 39 patients on dialysis 39% had their
serum F- concentration above 3.0 microM/l, posing the risk of renal
osteodystrophy.
相似文献
9.
10.
Changes in the sleep and daytime alertness of the elderly are common and are secondary to a variety of causes. These changes cannot be attributed solely to the aging process. The role of occult sleep disorders in producing these changes in significant, and severe sleep disruption in the healthy elderly is almost always secondary to a sleep disorder such as sleep apnea. A number of precautions must be kept in mind when interpreting studies of sleep in the elderly. 相似文献