全文获取类型
收费全文 | 33059篇 |
免费 | 4919篇 |
国内免费 | 613篇 |
专业分类
耳鼻咽喉 | 164篇 |
儿科学 | 492篇 |
妇产科学 | 401篇 |
基础医学 | 1591篇 |
口腔科学 | 881篇 |
临床医学 | 7363篇 |
内科学 | 2268篇 |
皮肤病学 | 153篇 |
神经病学 | 1386篇 |
特种医学 | 673篇 |
外国民族医学 | 1篇 |
外科学 | 3944篇 |
综合类 | 4469篇 |
现状与发展 | 1篇 |
一般理论 | 29篇 |
预防医学 | 7029篇 |
眼科学 | 197篇 |
药学 | 2687篇 |
73篇 | |
中国医学 | 3849篇 |
肿瘤学 | 940篇 |
出版年
2024年 | 137篇 |
2023年 | 1056篇 |
2022年 | 1201篇 |
2021年 | 2051篇 |
2020年 | 2217篇 |
2019年 | 2009篇 |
2018年 | 1772篇 |
2017年 | 1876篇 |
2016年 | 1722篇 |
2015年 | 1644篇 |
2014年 | 2424篇 |
2013年 | 3107篇 |
2012年 | 2045篇 |
2011年 | 2183篇 |
2010年 | 1670篇 |
2009年 | 1483篇 |
2008年 | 1575篇 |
2007年 | 1475篇 |
2006年 | 1321篇 |
2005年 | 944篇 |
2004年 | 813篇 |
2003年 | 787篇 |
2002年 | 522篇 |
2001年 | 446篇 |
2000年 | 434篇 |
1999年 | 281篇 |
1998年 | 257篇 |
1997年 | 214篇 |
1996年 | 187篇 |
1995年 | 132篇 |
1994年 | 95篇 |
1993年 | 87篇 |
1992年 | 57篇 |
1991年 | 48篇 |
1990年 | 57篇 |
1989年 | 38篇 |
1988年 | 41篇 |
1987年 | 31篇 |
1986年 | 20篇 |
1985年 | 30篇 |
1984年 | 18篇 |
1983年 | 9篇 |
1982年 | 13篇 |
1981年 | 11篇 |
1980年 | 16篇 |
1979年 | 10篇 |
1978年 | 5篇 |
1977年 | 5篇 |
1975年 | 3篇 |
1974年 | 8篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
22.
目的 探究高龄产妇产后抑郁的影响因素,为护理人员今后在临床工作中提供个性化的护理服务提供参考依据。方法 采用质性研究中的现象学研究法对2021年12月至2022年4月在内蒙古医科大学附属医院妇产科建档分娩的16例高龄产妇进行半结构式访谈,并以Colaizzi现象学研究方法进行资料分析。结果 提炼出影响高龄产妇产后抑郁的4个主题:躯体性压力源;负性心理体验;社会支持缺乏,矛盾出现;角色转变对高龄产妇的影响。结论 需重视高龄产妇产后的主观感受,加强产前产后健康宣教,构建以家庭为中心的高龄产妇产后护理模型,减少产后抑郁的发生。 相似文献
23.
《Clinical neurophysiology》2020,131(1):259-264
ObjectivesFasciculation potentials (FP) are an important consideration in the electrophysiological diagnosis of ALS. Muscle ultrasonography (MUS) has a higher sensitivity in detecting fasciculations than electromyography (EMG), while in some cases, it is unable to detect EMG-detected fasciculations. We aimed to investigate the differences of FP between the muscles with and without MUS-detected fasciculations (MUS-fas).MethodsThirty-one consecutive patients with sporadic ALS were prospectively recruited and in those, both needle EMG and MUS were performed. Analyses of the amplitude, duration, and number of phases of EMG-detected FPs were performed for seven muscles per patient, and results were compared between the muscles with and without MUS-fas in the total cohort.ResultsThe mean amplitude and phase number of FP were significantly lower in patients with EMG-detected FP alone (0.39 ± 0.25 mV and 3.21 ± 0.88, respectively) than in those with both FP and MUS-fas (1.22 ± 0.92 mV and 3.74 ± 1.39, respectively; p < 0.0001 and p = 0.017, Welch’s t-test).ConclusionSmall FP may be undetectable with MUS. MUS cannot replace EMG in the diagnostic approach for ALS.SignificanceClinicians should use a combination of EMG and MUS for the detection and quantitative analysis of fasciculation in ALS. 相似文献
24.
25.
26.
27.
《Gaceta sanitaria / S.E.S.P.A.S》2021,35(3):236-242
ObjectiveTo explore the views of the Internet in childhood, identifying both health assets and risks.MethodA qualitative study was performed using 14 focus groups, eight of which comprised boys and girls, four of which comprised parents and two of which were mixed (children and parents) in primary schools in urban and rural settings in Andalusia (Spain). Teachers in these schools were also asked to complete an online questionnaire using LimeSurvey. This study involved 114 individuals: 64 pupils (33 girls and 31 boys), 28 parents (18 mothers and 10 fathers), and 22 teachers (14 women and 8 men). Analysis of manifest content and underlying meanings was carried out. QSR NVivo 9 software was used to facilitate analysis and make it systematic.ResultsOur findings show how the differences in the way parents and children understand health and wellbeing affect the way they discuss the Internet and health. The discussion of results looks at the implications of computer literacy for public health and wellbeing, particularly with regard to health assets.ConclusionsParents and children understand the contribution of the Internet to health and wellbeing differently. Whilst parents emphasize the risks (unsafe environment, relationships and quality of information, social networks, physical problems and addiction), the children emphasize the assets offered by the Internet. 相似文献
28.
29.
沙苑子本草考证 总被引:1,自引:0,他引:1
沙苑子为我国常用中药,药用历史悠久。通过查阅本草文献,对沙苑子名称、基原、功效、产地及伪品5个方面进行考证,得知其名称演变大致经过"白蒺藜""沙苑蒺藜""沙苑子"3个阶段;历代本草记载沙苑子基原为扁茎黄芪的干燥成熟种子,古今应用品种基本一致;沙苑子补肾固精功效的记载自宋《本草衍义》起逐渐清晰明确;沙苑子道地产区自宋时起为陕西沙苑,明清时期产地逐渐转到陕西潼关、山西等地,建国后以陕西省为主向北扩散,以陕西潼关为佳;沙苑子建国前有马薸子、色微绿伪品及紫云英子等混伪品,建国后有紫云英、猪屎豆、华黄芪和直立黄芪的种子等混伪品。为沙苑子正本清源,并为其进一步深入开发提供参考。 相似文献
30.
New Zealand Emergency Medicine Network: A collaboration for acute care research in New Zealand 下载免费PDF全文
The specialty of emergency medicine in Australasia is coming of age. As part of this maturation there is a need for high‐quality evidence to inform practice. This article describes the development of the New Zealand Emergency Medicine Network, a collaboration of committed emergency care researchers who share the vision that New Zealand/Aotearoa will have a world‐leading, patient‐centred emergency care research network, which will improve emergency care for all, so that people coming to any ED in the country will have access to the same world‐class emergency care. 相似文献