全文获取类型
收费全文 | 1692篇 |
免费 | 93篇 |
国内免费 | 47篇 |
专业分类
耳鼻咽喉 | 41篇 |
儿科学 | 136篇 |
妇产科学 | 69篇 |
基础医学 | 184篇 |
口腔科学 | 53篇 |
临床医学 | 164篇 |
内科学 | 464篇 |
皮肤病学 | 27篇 |
神经病学 | 86篇 |
特种医学 | 140篇 |
外科学 | 132篇 |
综合类 | 14篇 |
预防医学 | 73篇 |
眼科学 | 14篇 |
药学 | 83篇 |
1篇 | |
中国医学 | 3篇 |
肿瘤学 | 148篇 |
出版年
2023年 | 9篇 |
2022年 | 23篇 |
2021年 | 33篇 |
2020年 | 15篇 |
2019年 | 19篇 |
2018年 | 29篇 |
2017年 | 20篇 |
2016年 | 24篇 |
2015年 | 37篇 |
2014年 | 40篇 |
2013年 | 52篇 |
2012年 | 60篇 |
2011年 | 55篇 |
2010年 | 45篇 |
2009年 | 46篇 |
2008年 | 50篇 |
2007年 | 109篇 |
2006年 | 80篇 |
2005年 | 58篇 |
2004年 | 41篇 |
2003年 | 56篇 |
2002年 | 62篇 |
2001年 | 55篇 |
2000年 | 53篇 |
1999年 | 59篇 |
1998年 | 60篇 |
1997年 | 68篇 |
1996年 | 59篇 |
1995年 | 59篇 |
1994年 | 35篇 |
1993年 | 32篇 |
1992年 | 16篇 |
1991年 | 28篇 |
1990年 | 24篇 |
1989年 | 25篇 |
1988年 | 34篇 |
1987年 | 35篇 |
1986年 | 25篇 |
1985年 | 31篇 |
1984年 | 23篇 |
1983年 | 23篇 |
1982年 | 14篇 |
1981年 | 14篇 |
1980年 | 13篇 |
1979年 | 13篇 |
1978年 | 7篇 |
1977年 | 11篇 |
1976年 | 6篇 |
1975年 | 6篇 |
1974年 | 10篇 |
排序方式: 共有1832条查询结果,搜索用时 15 毫秒
91.
Relationship between leukocytosis and ischemic complications following aneurysmal subarachnoid hemorrhage 总被引:1,自引:0,他引:1
The prognostic significance of admission leukocytosis with respect to ischemic complications of subarachnoid hemorrhage was retrospectively investigated in a series of patients with recently ruptured intracranial aneurysms. The present study concerned 47 consecutive cases admitted within 72 hours following the last hemorrhage, in the years 1982-1984. There was no difference in the admission WBC counts between patients who subsequently deteriorated due to ischemic complications and those who did not. However, the cell count rose significantly at the time of the clinical manifestations of ischemia, possibly as a result of structural damage of brain tissue and/or increased sympathetic and adrenocortical activity. The possible contribution of leukocytes to the pathogenesis of ischemic damage following subarachnoid hemorrhage--perhaps through the release of leukotrienes--will require further investigation. 相似文献
92.
Alessandro Pecci Emanuele Panza Daniela De Rocco Nuria Pujol‐Moix Giorgia Girotto Luigi Podda Carmelo Paparo Valeria Bozzi Annalisa Pastore Carlo L. Balduini Marco Seri Anna Savoia 《European journal of haematology》2010,84(4):291-297
MYH9‐related disease (MYH9‐RD) is a rare autosomal dominant disorder caused by mutations in MYH9, the gene encoding the heavy chain of non‐muscle myosin IIA. All patients present congenital macrothrombocytopenia and inclusion bodies in neutrophils. Some of them can also develop sensorineural deafness, presenile cataract, and/or progressive nephropathy leading to end‐stage renal failure. We report four families, each with a novel mutation: two missense mutations, in exons 31 and 32, and two out of frame deletions in exon 40. They were associated with no bleeding diathesis, normal, or only slightly reduced platelet count and no extra‐hematological manifestations, confirming that alterations of the tail domain cause a mild form of MYH9‐RD with no clinically relevant defects. 相似文献
93.
Lucas H Sampaio Mariane MA Stefani Regiane M Oliveira Ana LM Sousa Greg C Ireton Steven G Reed Malcolm S Duthie 《BMC infectious diseases》2011,11(1):26
Background
Leprosy is a chronic infectious disease caused by Mycobacterium leprae that can manifest a wide variety of immunological and clinical outcomes ranging from potent humoral responses among borderline lepromatous (BL) and lepromatous (LL) patients to strong cellular responses among tuberculoid (TT) and borderline tuberculoid (BT) patients. Until recently, relatively little has been known about the immune responses to individual proteins of M. leprae recognized during leprosy. 相似文献94.
Sleeping position and sudden infant death syndrome (SIDS): effect of an intervention programme to avoid prone sleeping 总被引:4,自引:0,他引:4
T Markestad B Skadberg E Hordvik I Morild LM Irgens 《Acta paediatrica (Oslo, Norway : 1992)》1995,84(4):375-378
The proportion of prone sleeping among sudden infant death syndrome (SIDS) victims and infants in general, and the rate of SIDS were prospectively studied in the county of Hordaland, Norway, three years before (1987–89) and three years after (1990–92) a campaign to discourage prone sleeping. Before the campaign, 64% of random reference infants were put prone versus 8% after (p < 0.0001). Concurrently, the rate of SIDS decreased from 3.5 to 1.6 per 1000 live births (63 infants before and 30 after the campaign, p = 0.0002). Prone sleeping was not considered a statistically significant risk factor for SIDS before (OR 2.0,95% CI 0.8–4.5), but was highly significant (OR 11.3,95% CI 3.6–36.5) after the campaign. Prone sleeping is an important risk factor for SIDS, but the association may be missed in epidemiological studies if prone is the predominant sleeping position. Behaviour with regard to sleeping position may be changed rapidly by means of a simple campaign. 相似文献
95.
96.
97.
98.
99.
100.
G Pastore M G Zurlo A Acquaviva G Calculli M Castello A Ceci M L Di Tullio S Gandus P Macchia L C Di Montezemolo 《Medical and pediatric oncology》1987,15(1):1-6
This paper reports late effects and health status of 198 children who had cancer or leukemia diagnosed under 2 years of age and their therapies electively withdrawn. This series (92 neuroblastoma [NBL], 57 Wilms' tumor [WT], 46 acute lymphoblastic leukemia [ALL], and 3 non-Hodgkin's lymphoma) was followed for 1-12 years after discontinuation of therapy. Thirty-three children were diagnosed before 1973, 92 between 1973 and 1977, and 73 after 1977 in 16 Italian Pediatric Oncology Centers. As of December 1983, 176 children were reported to be alive and without evidence of primary cancer by physicians responsible for their care. One child died from a second primary tumor, two from late recurrences of the primary cancer, and three from other causes; eight were alive with evidence of primary cancer; and eight were lost to follow-up. Kyphoscoliosis was found in 22 children and other musculoskeletal anomalies in 8. Neurological sequelae were observed in 8 out 35 children with ALL treated with radiotherapy (RT) and intrathecal methotrexate. All but one were in continuous complete remission when they developed seizures (three cases), leukoencephalopathy (three cases), or intracerebral calcifications (two cases). One child had cardiomyopathy and subsequently died from cardiac failure: he had received doxorubicin (400 mg/m2) and mediastinal RT (13 Gy) for NBL. Growth impairments were observed in children with NBL and WT. 相似文献