全文获取类型
收费全文 | 34316篇 |
免费 | 2750篇 |
国内免费 | 455篇 |
专业分类
耳鼻咽喉 | 359篇 |
儿科学 | 1019篇 |
妇产科学 | 609篇 |
基础医学 | 4962篇 |
口腔科学 | 517篇 |
临床医学 | 3238篇 |
内科学 | 7387篇 |
皮肤病学 | 761篇 |
神经病学 | 2587篇 |
特种医学 | 1388篇 |
外国民族医学 | 16篇 |
外科学 | 4188篇 |
综合类 | 1292篇 |
现状与发展 | 1篇 |
一般理论 | 2篇 |
预防医学 | 2673篇 |
眼科学 | 680篇 |
药学 | 2588篇 |
6篇 | |
中国医学 | 622篇 |
肿瘤学 | 2626篇 |
出版年
2023年 | 269篇 |
2022年 | 646篇 |
2021年 | 1081篇 |
2020年 | 674篇 |
2019年 | 839篇 |
2018年 | 1037篇 |
2017年 | 751篇 |
2016年 | 745篇 |
2015年 | 909篇 |
2014年 | 1160篇 |
2013年 | 1509篇 |
2012年 | 2179篇 |
2011年 | 2188篇 |
2010年 | 1351篇 |
2009年 | 1123篇 |
2008年 | 1614篇 |
2007年 | 1677篇 |
2006年 | 1589篇 |
2005年 | 1497篇 |
2004年 | 1329篇 |
2003年 | 1266篇 |
2002年 | 1198篇 |
2001年 | 1115篇 |
2000年 | 1103篇 |
1999年 | 978篇 |
1998年 | 357篇 |
1997年 | 307篇 |
1996年 | 272篇 |
1995年 | 226篇 |
1994年 | 215篇 |
1993年 | 185篇 |
1992年 | 519篇 |
1991年 | 502篇 |
1990年 | 483篇 |
1989年 | 450篇 |
1988年 | 461篇 |
1987年 | 391篇 |
1986年 | 380篇 |
1985年 | 371篇 |
1984年 | 258篇 |
1983年 | 192篇 |
1982年 | 123篇 |
1981年 | 111篇 |
1979年 | 211篇 |
1978年 | 113篇 |
1977年 | 128篇 |
1976年 | 116篇 |
1974年 | 130篇 |
1972年 | 128篇 |
1969年 | 104篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
72.
J Lachard G Le Retraite J L Blanc F Cheynet C Chossegros J F Bataille 《Revue de stomatologie et de chirurgie maxillo-faciale》1991,92(4):224-226
In 7 cases of mandibular laterognathia caused by condylar hypertrophy, the authors specify the clinical and teleradiological features in adolescents. They emphasize the inadequacy of lateral teleradiography and of its measurements, and the need for three-dimensional investigation. In adolescents, secondary deformations, either spontaneous or therapeutic, are rare, and the treatment preferred is condylectomy based on the study of casts. The immediate results of this techniques are satisfactory. The long-term consequences on growth and temporomandibular pathology have been studied. 相似文献
73.
K Daly G S Giebink P B Batalden R S Anderson C T Le B Lindgren 《The Pediatric infectious disease journal》1991,10(7):500-506
This double blind, placebo-controlled trial was designed to determine whether intervention with a stepped regimen of trimethoprim-sulfamethoxazole (TMP-SMX) and prednisone would prevent high risk children from developing chronic otitis media with effusion (OME) and recurrent acute otitis media. Forty-two children were enrolled, assigned to treatment with active drug or placebo and then examined at 2-week intervals. They received TMP-SMX (or placebo) during the first 2 weeks, TMP-SMX and prednisone (or placebo) during Weeks 3 and 4 for persistent OME and TMP-SMX (or placebo) for Weeks 5 and 6 if OME was still unresolved. After treatment 48% of active drug and 14% of placebo subjects resolved OME bilaterally (P less than 0.05). Active drug subjects also had fewer acute otitis media episodes than placebo subjects while receiving study treatment (P less than 0.01). Although this treatment regimen produced short term OME resolution, long term benefits were not demonstrated. 相似文献
74.
李素容 《四川省卫生管理干部学院学报》1995,14(1):30-31
以15例角膜移植术的护理实践,总结出该手术的护理常规,并对本组病例中发生的并发症的护理进行了讨论,强调护士密切观察病情,有效地处理并嫌下对手术成功的重要性。 相似文献
75.
Abdulmassih S. Iskandrian Jeffrey Johnson Tung T. Le Valerie Wasserleben Virginia Cave Jaekyeong Heo 《Journal of nuclear cardiology》1994,1(2):144-149
Background
This study compared the prognostic value of exercise single-photon emission computed tomographic (SPECT) thallium imaging with that of treadmill exercise score in medically treated patients with coronary artery disease (CAD) 相似文献76.
Georgios Amoiridis Ludwig Gutmann Dennis E. Wilkins Raja Sawaya Alain Lagueny Roger Marthan Philippe Schuermans Philippe Le Collen Xavier Ferrer Jean Julien Reha Kuruoglu Shin J. Oh Brian Thompson A. Aggarwal L. Gutmann A. Gutierrez Okifumi Nakazato Russel Johnsen Philip Morling B. A. Kakulas 《Muscle & nerve》1994,17(2):245-253
77.
Of all the neoplastic conditions of the lymphatic system, Non-Hodgkin's lymphoma (NHL) represents a heterogenous group. As well as lymph nodes NHL can involve extranodal sites, including regions in head and neck. The mouth and oropharynx are typical extranodal sites, and the ENT surgeon should be aware of this possibility of the swift diagnosis of NHL is to be made. We report two patients with rare invasion of the middle ear, facial nerve paresis, and asymptomatic cerebral involvement by Non-Hodgkin's lymphoma. 相似文献
78.
79.
A.M. Thierry C. Le Douarin J. Penit A. Perron J. Glowinski 《Brain research bulletin》1986,16(2):155-160
The stimulation of the ventro-medial mesencephalic tegmentum (VMT) induces an inhibition of the spontaneous activity of prefrontal cortical cells and blocks the excitatory responses evoked by the stimulation of the medio-dorsal nucleus of the thalamus (MD). This effect is mediated by the activation of the mesocortical dopaminergic (DA) system. In the present study, the influence of the systemic administration of several neuroleptics on the inhibition of prefrontal cortical cells induced by VMT stimulation has been analyzed in ketamine anaesthetised rats. The acute IP administration of fluphenazine (2 mg/kg), spiroperidol (2 mg/kg) or (+/-)sulpiride (100 mg/kg) reversed the inhibitory responses. Moreover, the number of cortical cells inhibited by VMT stimulation was considerably decreased after these treatments. Surprisingly, neither haloperidol at any dose used (0.1 to 0.5 mg/kg IV or 0.5 to 5 mg/kg IP) nor levomepromazine (25 mg/kg IP) nor the long acting neuroleptic, pipotiazine palmitic ester (32 mg/kg SC) blocked the inhibitory effect of VMT stimulation and in fact they lengthened the duration of the inhibition. Finally, the inhibition of MD evoked spikes in prefrontal cortical cells produced by VMT stimulation was no longer observed after sulpiride but persisted after haloperidol administration. Our findings confirm that the mesocortico-prefrontal DA neurons exert an inhibitory influence on target cells but they reveal differences in the efficacy of neuroleptics in blocking this effect. 相似文献
80.