全文获取类型
收费全文 | 4013695篇 |
免费 | 290910篇 |
国内免费 | 9047篇 |
专业分类
耳鼻咽喉 | 55861篇 |
儿科学 | 131684篇 |
妇产科学 | 110607篇 |
基础医学 | 573513篇 |
口腔科学 | 112001篇 |
临床医学 | 370115篇 |
内科学 | 775589篇 |
皮肤病学 | 92902篇 |
神经病学 | 325776篇 |
特种医学 | 152084篇 |
外国民族医学 | 1141篇 |
外科学 | 600532篇 |
综合类 | 83650篇 |
现状与发展 | 15篇 |
一般理论 | 1602篇 |
预防医学 | 314653篇 |
眼科学 | 93668篇 |
药学 | 296156篇 |
16篇 | |
中国医学 | 7855篇 |
肿瘤学 | 214232篇 |
出版年
2019年 | 32267篇 |
2018年 | 44626篇 |
2017年 | 33826篇 |
2016年 | 38893篇 |
2015年 | 43799篇 |
2014年 | 61174篇 |
2013年 | 92659篇 |
2012年 | 124853篇 |
2011年 | 132579篇 |
2010年 | 79744篇 |
2009年 | 75842篇 |
2008年 | 124109篇 |
2007年 | 131941篇 |
2006年 | 133872篇 |
2005年 | 129190篇 |
2004年 | 124307篇 |
2003年 | 119813篇 |
2002年 | 115875篇 |
2001年 | 183119篇 |
2000年 | 187965篇 |
1999年 | 158924篇 |
1998年 | 47190篇 |
1997年 | 41476篇 |
1996年 | 41628篇 |
1995年 | 40014篇 |
1994年 | 36751篇 |
1993年 | 34576篇 |
1992年 | 124634篇 |
1991年 | 120815篇 |
1990年 | 117507篇 |
1989年 | 113896篇 |
1988年 | 104813篇 |
1987年 | 102721篇 |
1986年 | 96716篇 |
1985年 | 92693篇 |
1984年 | 69296篇 |
1983年 | 59000篇 |
1982年 | 35177篇 |
1981年 | 31677篇 |
1979年 | 62889篇 |
1978年 | 44720篇 |
1977年 | 37761篇 |
1976年 | 35545篇 |
1975年 | 37965篇 |
1974年 | 45282篇 |
1973年 | 43145篇 |
1972年 | 40606篇 |
1971年 | 38140篇 |
1970年 | 35117篇 |
1969年 | 33798篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
971.
972.
Mani N Pavuluri Megan Marlow O'Connor Erin M Harral Melissa Moss John A Sweeney 《Neuropsychopharmacology》2006,60(9):951-956
BACKGROUND: Previous research has demonstrated that academic and neuropsychological functions are compromised in pediatric bipolar disorder (PBD). Investigation of the degree to which neuropsychological deficits might contribute to those academic problems is needed to aid in the recognition and intervention for school achievement difficulties in PBD. METHODS: A sample of 55 children and adolescents with PBD with and without attention-deficit/hyperactivity disorder (ADHD) (PBD group, n = 28; PBD+ADHD group, n = 27) were tested with a computerized neurocognitive battery and standardized neuropsychological tests. Age range of subjects was 7-17 years, with the mean age of 11.97 (3.18) years. Parents completed a structured questionnaire on school and academic functioning. RESULTS: Logistic regression analyses indicated that executive function, attention, working memory, and verbal memory scores were poorer in those with a history of reading/writing difficulties. A separate logistic regression analysis found that attentional dysfunction predicted math difficulties. These relationships between neuropsychological function and academic difficulties were not different in those with PBD+ADHD than in those with PBD alone. CONCLUSIONS: In PBD neuropsychological deficits in the areas of attention, working memory, and organization/problem solving skills all contribute to academic difficulties. Early identification and intervention for these difficulties might help prevent lower academic achievement in PBD. 相似文献
973.
974.
975.
976.
977.
Aim:To investigate the clinical characteristics of patients with Peyronie's disease(PD)and diabetes mellitus(DM).Methods:During an 8-year period,a total of 307 men seen at our outpatient clinic were diagnosed with PD.Clinicalcharacteristics,penile deformities and the erectile status of patients with PD and DM together(n=102)were retro-spectively analyzed and compared to patients with PD alone with no risk factors for systemic vascular diseases(n=97).Results:The prevalence of PD among men with DM and sexual dysfunction was 10.7%.The mean ageof diabetic patients with PD was(55.9±8.9)years;in the no risk factor group it was(48.5±9.0)years(P<0.05).The median duration of DM was 5 years.The majority of diabetic patients with PD(56.0%)presented in the chronicphase(P<0.05),and they were more likely to have a severe penile deformity(>60°)than the no risk factor group(P<0.05).In the diabetic group,the most common presenting symptom was penile curvature(81.4 %),followedby a palpable nodule on the shaft of the penis(22.5%)and penile pain with erection(14.7 %).A total of 19.6 % ofpatients were not aware of their penile deformities in the diabetic group.Erectile function,provided by history and inresponse to intracavernosal injection and a stimulation test,was significantly diminished in patients with PD and DM(P<0.05).Conclusion:DM probably exaggerates the fibrotic process in PD.Diabetic patients with PD have ahigher risk of severe deformity and erectile dysfunction(ED).PD seems to be a silent consequence of DM andshould be actively sought in diabetic men.(Asian J Androl 2006 Jan;8:75-79) 相似文献
978.
979.
980.