全文获取类型
收费全文 | 1683803篇 |
免费 | 116128篇 |
国内免费 | 2017篇 |
专业分类
耳鼻咽喉 | 21877篇 |
儿科学 | 54995篇 |
妇产科学 | 45120篇 |
基础医学 | 260262篇 |
口腔科学 | 45039篇 |
临床医学 | 155507篇 |
内科学 | 321827篇 |
皮肤病学 | 36852篇 |
神经病学 | 129288篇 |
特种医学 | 62801篇 |
外国民族医学 | 316篇 |
外科学 | 241649篇 |
综合类 | 32251篇 |
现状与发展 | 4篇 |
一般理论 | 661篇 |
预防医学 | 135955篇 |
眼科学 | 37798篇 |
药学 | 125246篇 |
8篇 | |
中国医学 | 2964篇 |
肿瘤学 | 91528篇 |
出版年
2018年 | 17852篇 |
2017年 | 13501篇 |
2016年 | 14997篇 |
2015年 | 17204篇 |
2014年 | 23522篇 |
2013年 | 35776篇 |
2012年 | 49753篇 |
2011年 | 53579篇 |
2010年 | 30989篇 |
2009年 | 29267篇 |
2008年 | 50003篇 |
2007年 | 54062篇 |
2006年 | 53336篇 |
2005年 | 51836篇 |
2004年 | 50109篇 |
2003年 | 48097篇 |
2002年 | 46676篇 |
2001年 | 72867篇 |
2000年 | 74392篇 |
1999年 | 62506篇 |
1998年 | 17553篇 |
1997年 | 15617篇 |
1996年 | 16065篇 |
1995年 | 15165篇 |
1994年 | 13961篇 |
1992年 | 49274篇 |
1991年 | 49886篇 |
1990年 | 48784篇 |
1989年 | 47414篇 |
1988年 | 43853篇 |
1987年 | 43278篇 |
1986年 | 40949篇 |
1985年 | 38863篇 |
1984年 | 29446篇 |
1983年 | 25623篇 |
1982年 | 14722篇 |
1981年 | 13395篇 |
1979年 | 28179篇 |
1978年 | 20518篇 |
1977年 | 16993篇 |
1976年 | 16415篇 |
1975年 | 18292篇 |
1974年 | 21734篇 |
1973年 | 21348篇 |
1972年 | 19999篇 |
1971年 | 18823篇 |
1970年 | 17738篇 |
1969年 | 16588篇 |
1968年 | 15585篇 |
1967年 | 13918篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
101.
This study examined electromyogram (EMG) and skin conductance level (SCL) as mediators of neuropsychological test performance of alcoholics. Alcoholics and controls with high EMG performed less well than low EMG subjects on 12 measures of neuropsychological performance. For SCL, the alcoholics and controls in the Low Group did not differ from those in the High Group on any measure. Analyses that used information intake (Low EMG and High SCL) and rejection (High EMG and Low SCL) information postures (IPs) demonstrated that the intake group outperformed the rejection group on 10 neuropsychological measures. Subjects with intake IPs reported more stimulation, concentration, and interest during the tasks than did subjects with rejection IPs. Results suggest that IPs can be used to identify alcoholics with neuropsychological deficits. 相似文献
102.
103.
Fronto-ethmoidal mucocoeles: a histopathological analysis. 总被引:1,自引:0,他引:1
From a series of 118 fronto-ethmoidal mucocoeles, 40 specimens have been submitted to detailed histological analysis. The frequency of each epithelial and sub-epithelial component is considered and reveals features which support a dynamic theory of bone resorption and formation rather than that of pressure erosion in the pathogenesis of mucocoeles. 相似文献
104.
Facial reanimation after acoustic neuroma excision is currently accomplished using a variety of surgical techniques. A multi-institutional survey of patient perceptions of facial reanimation success was accomplished by mailing a questionnaire to 809 randomly selected members of the Acoustic Neuroma Association. Four hundred sixty patients who underwent 296 reanimation procedures responded. Facial to hypoglossal nerve anastomosis, tarsorrhaphy, and upper eyelid implants were most frequently performed. The patient's estimations of initial deficit, spontaneous recovery, and overall satisfaction with the reanimation procedures are discussed. 相似文献
105.
R G Jones J W Bass M E Weisse J M Vincent 《The Pediatric infectious disease journal》1991,10(8):557-559
We tested the urine of 30 infants 6 weeks to 7 months of age after they received standard 10-micrograms (0.5-ml) doses of HbOC (HibTITER) Haemophilus influenzae b (Hib) conjugate vaccine for the presence of Hib antigenuria using a commercially available latex particle agglutination assay (Directigen). Urines were collected within 1 hour, from 1 to 3 hours, at 24 hours and at 3, 6 and 9 days after vaccine administration and reactions were quantitated from 0 to 3+. In contrast to previous studies in older children which showed little or no antigenuria following HbOC vaccination, our study shows that in infants intense Hib antigenuria is evident within 2 to 3 hours and persists 3 days after vaccine administration and that less intense antigenuria may be detected in some infants for several days. With efficacious vaccines now being used in 2- to 6-month-old infants, invasive Hib disease may soon be limited to infants of this age just before their seroconversion. It should be recognized that antigenuria occurs for several days after vaccination with Hib conjugate vaccines and that it could be erroneously interpreted as evidence of invasive Hib infection. 相似文献
106.
Nawf Sharief Judith E. Kingston Vanessa M. Wright Kate Costeloe 《Pediatric hematology and oncology》1991,8(4):323-327
We describe a familial case of Marfan's syndrome with associated intrathoracic stomach detected during the neonatal period. The patient developed a primitive leukemia at 3 months of age. Acute leukemia in a patient with Marfan's syndrome has not previously been reported. 相似文献
107.
Most authors consider the principal advantage of FG anastomoses (compared to microsurgical anastomoses) to be shorter operating time, reduced surgical trauma to oviduct stumps, and absence of tissue ischemia. These features promote reparative regeneration and decrease adhesion formation, resulting in complete recanalization of fallopian tubes. To date, the majority of work on FG is confined to the experimental development of surgical techniques. Investigations in reconstructive gynecological surgery are quite uncommon. The physical properties of FG and the positive results of available experimental studies suggest that further development of surgical techniques using FG in obstetrics and gynecology is worthwhile. 相似文献
108.
109.
A. Trovato S. Kirjavainen E. M. Galati A. M. Forestieri L. Iauk 《Phytotherapy research : PTR》1995,9(8):591-593
The decoction of Sclerocarya birroea Hochst. shows hypoglycaemic effects, an increase in plasma IRI in normal rats and an incremented oral-glucose tolerance. The decoction is also active against diet-induced hypercholesterolaemia. 相似文献
110.