全文获取类型
收费全文 | 11759篇 |
免费 | 676篇 |
国内免费 | 58篇 |
专业分类
耳鼻咽喉 | 190篇 |
儿科学 | 187篇 |
妇产科学 | 210篇 |
基础医学 | 1731篇 |
口腔科学 | 1026篇 |
临床医学 | 961篇 |
内科学 | 2656篇 |
皮肤病学 | 258篇 |
神经病学 | 770篇 |
特种医学 | 285篇 |
外科学 | 1408篇 |
综合类 | 78篇 |
一般理论 | 5篇 |
预防医学 | 1186篇 |
眼科学 | 121篇 |
药学 | 893篇 |
中国医学 | 146篇 |
肿瘤学 | 382篇 |
出版年
2023年 | 137篇 |
2022年 | 236篇 |
2021年 | 452篇 |
2020年 | 294篇 |
2019年 | 383篇 |
2018年 | 485篇 |
2017年 | 325篇 |
2016年 | 341篇 |
2015年 | 401篇 |
2014年 | 520篇 |
2013年 | 691篇 |
2012年 | 931篇 |
2011年 | 1091篇 |
2010年 | 530篇 |
2009年 | 432篇 |
2008年 | 649篇 |
2007年 | 677篇 |
2006年 | 599篇 |
2005年 | 500篇 |
2004年 | 431篇 |
2003年 | 348篇 |
2002年 | 339篇 |
2001年 | 215篇 |
2000年 | 215篇 |
1999年 | 170篇 |
1998年 | 69篇 |
1997年 | 65篇 |
1996年 | 44篇 |
1995年 | 57篇 |
1994年 | 53篇 |
1993年 | 30篇 |
1992年 | 92篇 |
1991年 | 57篇 |
1990年 | 64篇 |
1989年 | 66篇 |
1988年 | 47篇 |
1987年 | 34篇 |
1986年 | 37篇 |
1985年 | 33篇 |
1984年 | 26篇 |
1983年 | 21篇 |
1980年 | 23篇 |
1979年 | 15篇 |
1978年 | 26篇 |
1975年 | 17篇 |
1974年 | 15篇 |
1973年 | 22篇 |
1971年 | 21篇 |
1970年 | 17篇 |
1969年 | 18篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
51.
52.
Simon P. Jochems Karin de Ruiter Carla Solrzano Astrid Voskamp Elena Mitsi Elissavet Nikolaou Beatriz F. Carniel Sherin Pojar Esther L. German Jesús Rein Alessandra Soares-Schanoski Helen Hill Rachel Robinson Angela D. Hyder-Wright Caroline M. Weight Pascal F. Durrenberger Robert S. Heyderman Stephen B. Gordon Hermelijn H. Smits Britta C. Urban Jamie Rylance Andrea M. Collins Mark D. Wilkie Lepa Lazarova Samuel C. Leong Maria Yazdanbakhsh Daniela M. Ferreira 《The Journal of clinical investigation》2022,132(11)
53.
54.
Dbora Aparecida Oliveira Modena Rafael de Castro Ferreira Patricia Meyer Froes Katya Cristina Rocha 《The Journal of clinical and aesthetic dermatology》2022,15(5):65
BackgroundKnown in the past for its toxic aspect as the main urban pollutant, in the last few decades, ozone has been gaining greater visibility for its possible antimicrobial, antiviral, and antioxidant effects when used in human dermatological pathologies. Despite the reports of clinical benefits, the standard dosage for clinical efficacy and safety are yet not clear, nor are its means of application and its true acting mechanism.ObjectiveWe conducted a review to determine the efficacy and safety of ozone therapy for a variety of dermatological conditions.MethodsWe considered clinical trials (both randomized and non-randomized) published between December 2020 and March 2021 as long as they provided some PICO information, i.e., population (P), intervention (I), and study design. The skin dermatological conditions researched were: acne, dermatitis, psoriasis, systemic sclerosis, herpes, aging, ulcers, and skin scarring.ResultsA total of 326 articles were identified and 150 remained after duplicates were removed. After titles, abstracts and full articles were read, 17 articles were included in the systematic review (with 643 patients). ConclusionOzone therapy seems promising for some dermatological conditions; however, the articles included in this review had methodological limitations and did not sufficiently demonstrate sound evidence for safe therapy. Therefore, more studies with better methodological standards and longer-term assessments of side effects should be conducted to achieve better standards and safety in ozone therapy for dermatological conditions. 相似文献
55.
56.
57.
Cantrell's pentalogy is a very rare congenital anomaly. The hallmark of this condition is the presence of ectopia cordis and an abdominal wall defect. Its association with craniorachischisis is even more infrequent with just a few cases reported in the literature. The authors describe a case of a prenatal ultrasound diagnosis of Cantrell's pentalogy with posterior encephalocele and spinal dysraphism associated. 相似文献
58.
Pereira M. G. Vilaça M. Pereira M. Ferreira G. Monteiro S. Coelho H. Geraldes C. Gonçalves C. da Costa F. Leal Marques H. Bacalhau R. 《Quality of life research》2020,29(10):2641-2650
Quality of Life Research - The diagnosis of multiple myeloma (MM) has a significant impact on patients. This study analyzed the mediating role of patients’ unmet needs in the relationship... 相似文献
59.
Influence of a high-fat diet on gut microbiota, intestinal permeability and metabolic endotoxaemia 总被引:2,自引:0,他引:2
Moreira AP Texeira TF Ferreira AB do Carmo Gouveia Peluzio M de Cássia Gonçalves Alfenas R 《The British journal of nutrition》2012,108(5):801-809
Lipopolysaccharide (LPS) may play an important role in chronic diseases through the activation of inflammatory responses. The type of diet consumed is of major concern for the prevention and treatment of these diseases. Evidence from animal and human studies has shown that LPS can diffuse from the gut to the circulatory system in response to the intake of high amounts of fat. The method by which LPS move into the circulatory system is either through direct diffusion due to intestinal paracellular permeability or through absorption by enterocytes during chylomicron secretion. Considering the impact of metabolic diseases on public health and the association between these diseases and the levels of LPS in the circulatory system, this review will mainly discuss the current knowledge about high-fat diets and subclinical inflammation. It will also describe the new evidence that correlates gut microbiota, intestinal permeability and alkaline phosphatase activity with increased blood LPS levels and the biological effects of this increase, such as insulin resistance. Although the majority of the studies published so far have assessed the effects of dietary fat, additional studies are necessary to deepen the understanding of how the amount, the quality and the structure of the fat may affect endotoxaemia. The potential of food combinations to reduce the negative effects of fat intake should also be considered in future studies. In these studies, the effects of flavonoids, prebiotics and probiotics on endotoxaemia should be investigated. Thus, it is essential to identify dietetic strategies capable of minimising endotoxaemia and its postprandial inflammatory effects. 相似文献
60.