全文获取类型
收费全文 | 1235529篇 |
免费 | 89020篇 |
国内免费 | 12375篇 |
专业分类
耳鼻咽喉 | 16680篇 |
儿科学 | 36805篇 |
妇产科学 | 29962篇 |
基础医学 | 168192篇 |
口腔科学 | 32388篇 |
临床医学 | 114879篇 |
内科学 | 223599篇 |
皮肤病学 | 26285篇 |
神经病学 | 87821篇 |
特种医学 | 49103篇 |
外国民族医学 | 269篇 |
外科学 | 179698篇 |
综合类 | 57247篇 |
现状与发展 | 50篇 |
一般理论 | 272篇 |
预防医学 | 88553篇 |
眼科学 | 28148篇 |
药学 | 103410篇 |
196篇 | |
中国医学 | 15402篇 |
肿瘤学 | 77965篇 |
出版年
2022年 | 9257篇 |
2021年 | 15201篇 |
2020年 | 11120篇 |
2019年 | 12354篇 |
2018年 | 16335篇 |
2017年 | 14058篇 |
2016年 | 14940篇 |
2015年 | 18983篇 |
2014年 | 24666篇 |
2013年 | 32005篇 |
2012年 | 44670篇 |
2011年 | 47464篇 |
2010年 | 30469篇 |
2009年 | 27434篇 |
2008年 | 40693篇 |
2007年 | 42348篇 |
2006年 | 42326篇 |
2005年 | 39198篇 |
2004年 | 35503篇 |
2003年 | 33992篇 |
2002年 | 31999篇 |
2001年 | 63379篇 |
2000年 | 64024篇 |
1999年 | 52876篇 |
1998年 | 13589篇 |
1997年 | 12089篇 |
1996年 | 11873篇 |
1995年 | 11096篇 |
1994年 | 9927篇 |
1993年 | 9224篇 |
1992年 | 38160篇 |
1991年 | 36571篇 |
1990年 | 36022篇 |
1989年 | 34502篇 |
1988年 | 31043篇 |
1987年 | 30161篇 |
1986年 | 28338篇 |
1985年 | 26542篇 |
1984年 | 19233篇 |
1983年 | 16153篇 |
1979年 | 17069篇 |
1978年 | 11419篇 |
1977年 | 10246篇 |
1975年 | 10079篇 |
1974年 | 11671篇 |
1973年 | 11300篇 |
1972年 | 10761篇 |
1971年 | 10100篇 |
1970年 | 9261篇 |
1969年 | 8942篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
32.
Recurrent Oral and Genital Ulcers in an Infant: Neonatal Presentation of Pediatric Behçet Disease 下载免费PDF全文
Emma F. Johnson M.D. Danielle M. Hawkins M.D. Laura K. Gifford M.D. Aimee C. Smidt M.D. 《Pediatric dermatology》2015,32(5):714-717
Behçet disease is a complex, multisystem disease characterized by recurrent oral and genital ulcerations. It rarely occurs in infants or children. Neonatal Behçet disease has been reported in infants whose ulcers resolve at or before 9 weeks of age. Few cases of neonatal Behçet disease persisting into childhood have previously been reported. We report the case of a 1‐month‐old infant who presented with severe recurrent genital ulcerations and at 6 months developed recurrent oral ulcerations. Her orogenital ulcerations continue to recur. Human leukocyte antigen testing revealed HLA‐B51 and B44 positivity. This is a case of pediatric Behçet disease in the neonatal period. Behçet disease should be considered in the differential diagnosis of recurrent genital and oral ulcerations in infants and children. 相似文献
33.
34.
目的 探讨快速康复外科 (FTS)理念在经后颅窝乙状窦后入路三叉神经微血管减压术围术期患者护理中的应用效果。方法 选择2018年1月~2019年1月我院收治并行经后颅窝乙状窦后入路三叉神经微血管减压患者100例,随机分成观察组和对照组,每组50例。对照组应用常规方法进行围术期护理,观察组应用FTS理念进行围术期护理。比较两组焦虑情况、术后并发症发生率、平均住院日及平均住院费用。结果 观察组轻度焦虑多于对照组,中、重度焦虑少于对照组(P<0.05);观察组术后并发症发生率低于对照组[恶心呕吐(4.00% vs 16.00%)、尿路感染(4.00% vs 18.00%)、颅内感染(0 vs 8.00%)、颅内血肿(2.00% vs 14.00%)和术后应激性疼痛(16.00% vs 34.00%)],差异有统计学意义(P<0.05);观察组平均住院日和平均住院费用均低于对照组[(9.13±1.14)d vs(12.44±0.89)d];[(2.15±0.66)万元 vs (3.05±0.61)万元],差异有统计学意义(P<0.05)。结论 应用FTS理念能缓解经后颅窝乙状窦后入路三叉神经微血管减压术患者术前紧张恐惧的心理,减少术后并发症,缩短患者住院日,降低住院费用,护理效果较好。 相似文献
35.
Fathi A Elshazly Walid K Abdelbasset Ragab K Elnaggar Sayed A Tantawy 《African health sciences》2020,20(1):368
BackgroundSecond-hand smoking or environmental tobacco smoke is a critical health risk. Children are the most vulnerable to second-hand smoking because of their small bronchial ducts, less developed immunity, and low-physical activity.ObjectivesThe purpose of this study was to ascertain the effects of second-hand smoking on lung functions in athlete and non-athlete school-aged children.MethodsThis observational study included forty-six school-aged children, their age was 8–15 years, assigned to three groups; 2 study groups and 1 control group (n=15). The study groups comprised of 16 football players, and of 15 cyclists. Lung functions were evaluated recording forced vital capacity, forced expiratory volume in 1 sec and peak expiratory flow using digital spirometer.ResultsAll measures were recorded in definite values and the children were also classified into second-hand smoking (SH), or non-exposed to tobacco smoking (NE). The findings presented a significant increase (p<0.05) of the study groups in forced vital capacity, forced expiratory volume in 1 sec and peak expiratory flow solely for the non-exposed children. However, there were non-significant differences between the cyclists and football players or between the passive smoking children and non-exposed children in any of the two study groups (p>0.05).ConclusionThe outcomes of this study suggest beneficial influences of the sports activity on the lung functions, without different influences of the cyclists and football players on the lung functions. 相似文献
36.
37.
As millions of people turn to social media for health information, better understanding the factors that guide health-related judgments and perceptions in this context is imperative. We report on two Web experiments (n > 400 total) examining the power of society’s widespread weight bias and related stereotypes to influence nutrition judgments in social media spaces. In Experiment 1, meals were judged as lower in nutritional quality when the person who recommended them (the source) was depicted as obese rather than of normal weight, an effect mediated by stereotypic beliefs about the source as a generally unhealthy person. Experiment 2 replicated this effect, which—notably—remained significant when controlling for objective nutritional information (calories and fat content). Results highlight spillover effects of weight bias that extend beyond person perception to color impressions of objects (here, food) that are associated with stigmatized attributes. Implications for everyday nutrition judgments and public health are considered. 相似文献
38.
39.
40.