全文获取类型
收费全文 | 22366篇 |
免费 | 2116篇 |
国内免费 | 214篇 |
专业分类
耳鼻咽喉 | 206篇 |
儿科学 | 4946篇 |
妇产科学 | 305篇 |
基础医学 | 1306篇 |
口腔科学 | 408篇 |
临床医学 | 2590篇 |
内科学 | 1862篇 |
皮肤病学 | 152篇 |
神经病学 | 2203篇 |
特种医学 | 264篇 |
外国民族医学 | 1篇 |
外科学 | 1094篇 |
综合类 | 1599篇 |
现状与发展 | 1篇 |
一般理论 | 2篇 |
预防医学 | 4476篇 |
眼科学 | 116篇 |
药学 | 2692篇 |
8篇 | |
中国医学 | 238篇 |
肿瘤学 | 227篇 |
出版年
2024年 | 72篇 |
2023年 | 375篇 |
2022年 | 618篇 |
2021年 | 776篇 |
2020年 | 958篇 |
2019年 | 1008篇 |
2018年 | 933篇 |
2017年 | 986篇 |
2016年 | 1065篇 |
2015年 | 884篇 |
2014年 | 1216篇 |
2013年 | 2565篇 |
2012年 | 1255篇 |
2011年 | 1226篇 |
2010年 | 986篇 |
2009年 | 930篇 |
2008年 | 981篇 |
2007年 | 1072篇 |
2006年 | 953篇 |
2005年 | 703篇 |
2004年 | 619篇 |
2003年 | 562篇 |
2002年 | 525篇 |
2001年 | 429篇 |
2000年 | 390篇 |
1999年 | 345篇 |
1998年 | 311篇 |
1997年 | 275篇 |
1996年 | 223篇 |
1995年 | 206篇 |
1994年 | 172篇 |
1993年 | 157篇 |
1992年 | 114篇 |
1991年 | 137篇 |
1990年 | 98篇 |
1989年 | 81篇 |
1988年 | 100篇 |
1987年 | 66篇 |
1986年 | 59篇 |
1985年 | 59篇 |
1984年 | 44篇 |
1983年 | 26篇 |
1982年 | 27篇 |
1981年 | 19篇 |
1980年 | 21篇 |
1979年 | 13篇 |
1978年 | 15篇 |
1976年 | 11篇 |
1975年 | 6篇 |
1974年 | 5篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
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
3.
4.
Michael W. Anderson MD Kanika Sharma MD Colin M. Feeney MD 《Academic emergency medicine》1997,4(8):805-809
The incidence of wound botulism is increasing and the epidemiology of the disease is changing. The majority of new cases are associated with injection drug use, in particular, the use of Mexican black tar heroin. This case report and discussion of wound botulism illustrate the following important points: Dysphagia, dysphonia, diplopia, and descending paralysis, in association with injection drug use, should alert the treating physician to the possibility of wound botulism. In such patients, the onset of respiratory failure may be sudden and without clinically obvious signs of respiratory weakness. For the reported patient, maximum inspiratory force measurements were the only reliable indicator of respiratory muscle weakness. This is a measurement not routinely performed in the ED, but may prove essential for patients with suspected wound botulism. To minimize the effect of the botulinum toxin and to decrease length of hospital stay, antitoxin administration and surgical wound debridement should be performed early. 相似文献
5.
Sonja Olin Lauritzen 《Sociology of health & illness》1997,19(4):436-456
This paper is concerned with mothers’ understandings of child health in their young babies. To explore how child health is depicted, explained and contextualised by mothers, altogether 29 mothers in Stockholm and London were interviewed through the baby's first months about day-to-day experiences of the baby's health and well-being. The analysis of the mothers’ accounts reveals how the mothers, in the process of assessing health, try to ‘read’ the bodily signs and reactions in their babies. Some major themes emerge on how the mothers identify and characterise threats to the health of the baby; here described as threats of abnormalities, threats to the survival of the baby, threats to the thriving of the baby and threats from illnesses. Notions of child health are discussed in relation to the ‘bodily’ and the ‘social’, and how the embodied images of child health are intertwined with the mothers’ presentations of themselves as responsible for the health of their children and as ‘worthy’ parents. 相似文献
6.
[目的 ]探讨自拟消咳贴穴位贴敷治疗小儿反复呼吸道感染 (RRI)的临床效果。 [方法 ]选择 15 0例RRI患儿 ,随机分为观察组和对照组 ,观察组在对因对症治疗基础上应用自拟消咳贴穴位贴敷 ,对照组采用对因对症治疗 ;另选 3 0例正常儿童 ,观察血浆内皮素 (ET -1)、一氧化氮 (NO)变化及临床疗效。 [结果 ]观察组治疗后血浆ET -1、NO含量明显下降 (P <0 .0 1) ,而对照组治疗前后则无统计学意义 ;观察组临床总有效率高于对照组 (P <0 .0 1) ,且每月发病次数及天数也明显降低。 [结论 ]应用自拟消咳贴穴位贴敷能有效地降低RRI患儿血浆ET -1、NO水平 ,从而提高临床疗效 相似文献
7.
8.
Charles P. Mouton Rebecca J. Rodabough Susan L. D. Rovi Robert G. Brzyski David A. Katerndahl 《Annals of family medicine》2010,8(3):206-213
PURPOSE The purpose of this study was to examine the psychological effects of physical and verbal abuse in a cohort of older women.METHODS This observational cohort study was conducted at 40 clinical sites nationwide that are part of the Women’s Health Initiative (WHI) Observational Study. We surveyed 93,676 women aged 50 to 79 years using the mental health subscales and the combined mental component summary (MCS) score of the RAND Medical Outcomes Study 36-item instrument.RESULTS At baseline, women reporting exposure to physical abuse only, verbal abuse only, or both physical and verbal abuse had a greater number of depressive symptoms (1.6,1.6, and 3 more symptoms, respectively) and lower MCS scores (4.6, 5.4, and 8.1 lower scores, respectively) than women not reporting abuse. Compared with women who had no exposure to abuse, women had a greater increase in the number of depressive symptoms when they reported a 3-year incident exposure to physical abuse only (0.2; 95% confidence interval [CI], −0.21 to 0.60), verbal abuse only (0.18; 95% CI, 0.11 to 0.24), or both physical and verbal abuse (0.15; 95% CI, −0.05 to 0.36); and they had a decrease in MCS scores when they reported a 3-year incident exposure to physical abuse only (−1.12; 95% CI, −2.45 to 0.12), verbal abuse only (−0.55; 95% CI, −0.75 to −0.34), and both physical and verbal abuse (−0.44; 95% CI, −1.11 to −0.22) even after adjustment for sociodemographic characteristics.CONCLUSION Exposure to abuse in older, functionally independent women is associated with poorer mental health. The persistence of these findings suggests that clinicians need to consider abuse exposure in their older female patients who have depressive symptoms. Clinicians caring for older women should identify women at risk for physical and verbal abuse and intervene appropriately. 相似文献
9.
10.