全文获取类型
收费全文 | 2990篇 |
免费 | 297篇 |
国内免费 | 33篇 |
专业分类
耳鼻咽喉 | 72篇 |
儿科学 | 88篇 |
妇产科学 | 39篇 |
基础医学 | 223篇 |
口腔科学 | 144篇 |
临床医学 | 335篇 |
内科学 | 547篇 |
皮肤病学 | 130篇 |
神经病学 | 200篇 |
特种医学 | 162篇 |
外科学 | 706篇 |
综合类 | 134篇 |
现状与发展 | 30篇 |
预防医学 | 168篇 |
眼科学 | 36篇 |
药学 | 153篇 |
中国医学 | 11篇 |
肿瘤学 | 142篇 |
出版年
2024年 | 14篇 |
2023年 | 197篇 |
2022年 | 44篇 |
2021年 | 77篇 |
2020年 | 101篇 |
2019年 | 69篇 |
2018年 | 110篇 |
2017年 | 87篇 |
2016年 | 85篇 |
2015年 | 105篇 |
2014年 | 155篇 |
2013年 | 146篇 |
2012年 | 128篇 |
2011年 | 147篇 |
2010年 | 126篇 |
2009年 | 139篇 |
2008年 | 105篇 |
2007年 | 119篇 |
2006年 | 93篇 |
2005年 | 84篇 |
2004年 | 76篇 |
2003年 | 74篇 |
2002年 | 69篇 |
2001年 | 62篇 |
2000年 | 69篇 |
1999年 | 66篇 |
1998年 | 52篇 |
1997年 | 63篇 |
1996年 | 50篇 |
1995年 | 38篇 |
1994年 | 37篇 |
1993年 | 42篇 |
1992年 | 34篇 |
1991年 | 41篇 |
1990年 | 35篇 |
1989年 | 45篇 |
1988年 | 32篇 |
1987年 | 27篇 |
1986年 | 30篇 |
1985年 | 30篇 |
1984年 | 22篇 |
1983年 | 12篇 |
1982年 | 18篇 |
1981年 | 13篇 |
1980年 | 17篇 |
1978年 | 11篇 |
1976年 | 19篇 |
1975年 | 15篇 |
1974年 | 19篇 |
1973年 | 10篇 |
排序方式: 共有3320条查询结果,搜索用时 390 毫秒
11.
12.
Solitary bronchioloalveolar carcinoma: CT criteria 总被引:14,自引:0,他引:14
Kuhlman JE; Fishman EK; Kuhajda FP; Meziane MM; Khouri NF; Zerhouni EA; Siegelman SS 《Radiology》1988,167(2):379-382
The computed tomographic (CT) scans of 30 patients with solitary bronchioloalveolar carcinoma were reviewed. Common features at CT included the peripheral or subpleural location of a pulmonary mass (25 cases), pseudocavitation (18 cases), heterogeneous attenuation (17 cases), irregular margins forming a star pattern (22 cases), and pleural tags (21 cases). Using these CT criteria, four independent observers attempted to identify cases of bronchioloalveolar carcinoma from a larger sample of lung cancers and benign lesions by categorizing a series of test cases into four probability categories. Although the bronchioloalveolar carcinomas were correctly ranked in the two highest probability categories 75% of the time (in 45 of 60 cases), there was considerable overlap with other lung lesions, particularly with adenocarcinoma and large cell undifferentiated carcinoma. However, even though the typical features of bronchioloalveolar carcinoma are not invariable or highly specific, they are characteristic enough to suggest the diagnosis. 相似文献
13.
14.
Roderik Metz Gino MMJ Kerkhoffs Egbert-Jan MM Verleisdonk Geert J van der Heijden 《BMC musculoskeletal disorders》2007,8(1):108
Background
We present the design of an open randomized multi-centre study on surgical versus conservative treatment of acute Achilles tendon ruptures. The study is designed to evaluate the effectiveness of conservative treatment in reducing complications when treating acute Achilles tendon rupture. 相似文献15.
P Iranzo MM Alsina I Martínez-De Pablo S Segura JM Mascaró C Herrero 《Journal of the European Academy of Dermatology and Venereology》2007,21(7):902-907
BACKGROUND: The mainstay of treatment for pemphigus is systemic corticosteroids. Different adjuvants have been used to reduce side-effects of long-term corticotherapy. Gold is an anti-inflammatory drug used in autoimmune diseases, whose use has waned with the advent of new immunosuppressive agents. OBJECTIVE: To study the outcome of the use of intramuscular gold treatment of pemphigus vulgaris refractory to previous therapies. METHODS: Thirteen patients with pemphigus vulgaris who had failed to respond to several prior therapies were treated with aurothiomalate, as a steroid-sparing agent. Patients were monitored to assess disease activity and gold toxicity. RESULTS: Seven patients achieved complete remission. Four patients were able to taper prednisone doses, although pemphigus flared when prednisone was discontinued or reduced. Toxicity was observed in the other two patients. CONCLUSIONS: In 53.4% of the patients, the use of chrysotherapy resulted in the complete clearing of the disease, discontinuation of all systemic therapies and induced a long-term clinical remission. Prednisone doses were able to be reduced in the remaining 46.6%. Any side-effects were reversible with drug discontinuation. Gold therapy showed efficacy as a secondary line treatment in refractory pemphigus vulgaris. 相似文献
16.
Purpose
The aim of this study was to investigate current prescribing and dispensing practices at primary healthcare centers in Kuwait and compare them with those reported in other countries. 相似文献17.
D Mahalanabis H Ashraf MM Rahman GJ Fuchs 《Acta paediatrica (Oslo, Norway : 1992)》1998,87(11):1113-1115
One-hundred and six male children aged 6-23 months with a history of acute watery diarrhoea of less than 72 h duration were randomized to receive either folic acid in a dose of 5 mg at 8-h intervals or placebo for 5 d. There were 54 children in the folic acid group and 52 in the placebo group. The admission characteristics were comparable between the two groups. No significant differences were observed in the intake of oral rehydration solution or stool output between the groups. The mean ± SD of total stool output (g kg−1 ) was 532 ± 476 vs 479 ± 354 and the duration (h) of diarrhoea was 108 ± 68 vs 103 ± 53 in the folic acid vs placebo group, respectively. The findings, therefore, should have a positive influence on preventing the inappropriate use of folic acid in acute diarrhoea. 相似文献
18.
Intractable complex partial seizures associated with occult temporal lobe encephalocele and meningoangiomatosis: a case report 总被引:1,自引:0,他引:1
Occult congenital temporal lobe encephalocele has rarely been reported in association with medically intractable complex partial seizures. The four previously reported cases were unsuspected preoperatively. We present the case of an 18-year-old woman with intractable complex partial seizures since age 13. Seizure onset was electrically localized to the right temporal lobe. Preoperative neuroimaging studies revealed a middle fossa defect and inferior herniation of the right temporal lobe. Pathologic examination of the resected encephalocele revealed prominent features of meningoangiomatosis. We believe this to be the first case of temporal lobe encephalocele and epilepsy to be diagnosed preoperatively, and the first case also to be associated with meningoangiomatosis. The relevant literature on meningoangiomatosis and on temporal lobe encephalocele as a cause of epilepsy is reviewed. 相似文献
19.
20.