全文获取类型
收费全文 | 39505篇 |
免费 | 2734篇 |
国内免费 | 126篇 |
专业分类
耳鼻咽喉 | 375篇 |
儿科学 | 980篇 |
妇产科学 | 937篇 |
基础医学 | 5120篇 |
口腔科学 | 649篇 |
临床医学 | 3843篇 |
内科学 | 7622篇 |
皮肤病学 | 590篇 |
神经病学 | 4108篇 |
特种医学 | 1283篇 |
外科学 | 6521篇 |
综合类 | 469篇 |
现状与发展 | 1篇 |
一般理论 | 35篇 |
预防医学 | 3279篇 |
眼科学 | 1006篇 |
药学 | 2661篇 |
中国医学 | 114篇 |
肿瘤学 | 2772篇 |
出版年
2023年 | 210篇 |
2022年 | 337篇 |
2021年 | 880篇 |
2020年 | 543篇 |
2019年 | 799篇 |
2018年 | 1016篇 |
2017年 | 721篇 |
2016年 | 723篇 |
2015年 | 857篇 |
2014年 | 1327篇 |
2013年 | 1721篇 |
2012年 | 2800篇 |
2011年 | 2926篇 |
2010年 | 1652篇 |
2009年 | 1490篇 |
2008年 | 2663篇 |
2007年 | 2844篇 |
2006年 | 2676篇 |
2005年 | 2622篇 |
2004年 | 2508篇 |
2003年 | 2376篇 |
2002年 | 2176篇 |
2001年 | 388篇 |
2000年 | 340篇 |
1999年 | 385篇 |
1998年 | 445篇 |
1997年 | 389篇 |
1996年 | 380篇 |
1995年 | 312篇 |
1994年 | 297篇 |
1993年 | 262篇 |
1992年 | 229篇 |
1991年 | 194篇 |
1990年 | 161篇 |
1989年 | 147篇 |
1988年 | 168篇 |
1987年 | 156篇 |
1986年 | 139篇 |
1985年 | 140篇 |
1984年 | 148篇 |
1983年 | 158篇 |
1982年 | 195篇 |
1981年 | 172篇 |
1980年 | 148篇 |
1979年 | 87篇 |
1978年 | 119篇 |
1977年 | 119篇 |
1976年 | 89篇 |
1975年 | 89篇 |
1974年 | 78篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
52.
53.
Deborah Bray Preston Anthony R D'Augelli Cathy D Kassab Richard E Cain Frederick W Schulze Michael T Starks 《AIDS education and prevention》2004,16(4):291-303
Research investigating predictors of risky sexual behavior of rural MSM is sparse, even though the prevalence of HIV in rural areas has increased. This study explored two sets of predictors of 93 rural MSM's levels of risky sexual behavior: mental health variables and stigma emanating from men's family members, health care professionals, and people in the rural communities in which they live. Over 47% of the men were found to be at modified high to high risk. Logistic regression using a continuation logit model was used to test the relationship of the predictor variables and the four levels of risk. Findings indicate that self-esteem was predictive of the highest sexual risk behavior but not lower levels of risk. Stigma was predictive of modified high sexual risk when compared to low and no risk categories. No variables differentiated men at low risk from men at no risk. 相似文献
54.
55.
56.
57.
Pallavi Parashar Anthony Musella Timothy Novak Robert O Greer 《Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics》2007,104(4):e66-e70
Melorheostosis is a rare sclerosing bone dysplasia that is characterized by a localized, diffuse thickening of the cortical bone. This condition usually affects the appendicular skeleton and associated soft tissue and rarely affects the craniofacial complex. The etiology of this condition is obscure. Diagnosis of melorheostosis relies on clinical, radiographic, and histological correlation. Only 8 cases of melorheostosis involving the craniofacial complex have been reported. We report 2 new cases of isolated melorheostosis involving the maxilla and mandible, together with differential diagnostic considerations. To our knowledge, involvement of the maxilla only has not been previously reported. 相似文献
58.
Judith D. DePue Elizabeth L. McQuaid Daphne Koinis-Mitchell Christopher Camillo Anthony Alario Robert B. Klein 《The Journal of asthma》2007,44(6):449-453
Over 3 years, 972 families participated in an after-school asthma program at their child's school. Parents and children attended concurrent 21/2 -hour workshops. Parents were 74% Latino; 45% non-English speaking, with 77% of children on Medicaid. Asthma symptoms were significantly reduced, from multiple times per week to less than once per week on average. Oral steroid use decreased to one third of baseline use. Hospital days decreased from 11% to 2%; emergency visits decreased 35% to 4%; and school days missed decreased 48% to 20%. This program has now become sustainable with both private and Medicaid insurance coverage. 相似文献
59.
E Anne Lacey R June Musgrave Jenny V Freeman Angela M Tod Peter Scott 《European Journal of Cardiovascular Nursing》2004,3(3):219-224
BACKGROUND: Psychological morbidity after an acute myocardial infarction (AMI) is known to be common, but can be addressed by appropriate rehabilitation. The area in which this research was conducted experiences high rates of deprivation and of coronary heart disease and limited access to hospital-based rehabilitation. Responding to concern about psychological needs of AMI patients, a self-help package was introduced and evaluated alongside standard hospital-based cardiac rehabilitation. AIMS: To evaluate the impact of a home-based self-help package (the Heart Manual), alongside existing cardiac rehabilitation provision, on psychological morbidity and health status after AMI. A secondary aim was to assess the suitability of the Heart Manual for older patients aged over 80 years. METHODS: A controlled observational study, comparing two cohorts of patients discharged from hospital after AMI. The intervention group was given the self-help package in addition to standard care. The control group received standard care alone. Outcome measures used were the Hospital Anxiety and Depression Scale and the EuroQol. RESULTS: The intervention group showed significant improvement in anxiety and depression scores after 3 months and nonsignificant improvement in general health status. Patients who attended hospital-based rehabilitation classes, and those aged over 80 years, also benefited from the intervention. CONCLUSION: A home-based self-help rehabilitation package is an effective tool alongside hospital-based rehabilitation classes and can be given to all age groups. 相似文献
60.