全文获取类型
收费全文 | 103389篇 |
免费 | 8770篇 |
国内免费 | 6043篇 |
专业分类
耳鼻咽喉 | 1109篇 |
儿科学 | 1538篇 |
妇产科学 | 2304篇 |
基础医学 | 12335篇 |
口腔科学 | 1947篇 |
临床医学 | 13854篇 |
内科学 | 16169篇 |
皮肤病学 | 893篇 |
神经病学 | 5632篇 |
特种医学 | 3519篇 |
外国民族医学 | 42篇 |
外科学 | 11086篇 |
综合类 | 14730篇 |
现状与发展 | 23篇 |
一般理论 | 20篇 |
预防医学 | 5958篇 |
眼科学 | 2852篇 |
药学 | 10646篇 |
56篇 | |
中国医学 | 4816篇 |
肿瘤学 | 8673篇 |
出版年
2024年 | 218篇 |
2023年 | 1309篇 |
2022年 | 3001篇 |
2021年 | 4908篇 |
2020年 | 3489篇 |
2019年 | 3216篇 |
2018年 | 3535篇 |
2017年 | 2922篇 |
2016年 | 2839篇 |
2015年 | 4401篇 |
2014年 | 5605篇 |
2013年 | 5001篇 |
2012年 | 7521篇 |
2011年 | 8263篇 |
2010年 | 4969篇 |
2009年 | 3814篇 |
2008年 | 5268篇 |
2007年 | 5522篇 |
2006年 | 5399篇 |
2005年 | 5694篇 |
2004年 | 3830篇 |
2003年 | 3398篇 |
2002年 | 2996篇 |
2001年 | 2440篇 |
2000年 | 2649篇 |
1999年 | 2690篇 |
1998年 | 1574篇 |
1997年 | 1472篇 |
1996年 | 1309篇 |
1995年 | 1161篇 |
1994年 | 982篇 |
1993年 | 635篇 |
1992年 | 998篇 |
1991年 | 805篇 |
1990年 | 684篇 |
1989年 | 600篇 |
1988年 | 593篇 |
1987年 | 512篇 |
1986年 | 418篇 |
1985年 | 330篇 |
1984年 | 208篇 |
1983年 | 159篇 |
1982年 | 85篇 |
1981年 | 98篇 |
1980年 | 83篇 |
1979年 | 115篇 |
1978年 | 54篇 |
1977年 | 56篇 |
1975年 | 44篇 |
1974年 | 45篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
目的 探讨分析基于护理专业能力进阶制度的优化层级管理模式在临床的应用效果。方法 选择重庆市大足区二级及以上5家医院共500名护士作为研究对象,随机分为干预组和对照组,每组护士各250名,对照组护士采用传统管理模式,干预组护士采用基于专业能力进阶制度护理人员优化层级管理模式,比较分析两组护士护理能力、临床工作质量和不良事件发生率。采用SPSS 23.0进行卡方检验和t检验。结果 两组护士年龄、性别、婚姻、职称、工作年限等差异没有统计学意义(P>0.05),基线资料保持一致,具有可比性。进行优化层级管理后,干预组护士护理能力得分(82.30±3.83)明显高于对照组(72.78±5.33);干预组护士护理工作质量得分(97.53±9.71)明显高于对照组(90.17±8.18)。对两组医院不良事件发生率进行组间比较,干预组不良事件发生率(0.9%)明显低于对照组(3.9%),差异均有统计学意义(P<0.05)。结论 基于专业能力进阶制度的护理人员优化层级管理模式能够提升护理人员的专业能力和临床护理质量,降低不良事件发生率,为提升护理管理水平提供借鉴和参考。 相似文献
42.
Peng Cheng Linlin Yang Xiaodan Huang Xuejun Wang Maoqing Gong 《Archiv der Pharmazie》2020,353(4):1900350
Malaria, one of the most striking, re-emerging infectious diseases caused by the genus Plasmodium, places a huge burden on global healthcare systems. A major challenge in the control and eradication of malaria is the continuous emergence of increasingly widespread drug-resistant malaria, creating an urgent need to develop novel antimalarial agents. Chalcone derivatives are ubiquitous in nature and have become indispensable units in medicinal chemistry applications due to their diverse biological profiles. Many chalcone derivatives demonstrate potential in vitro and in vivo antimalarial activity, so chalcone could be a useful template for the development of novel antimalarial agents. This review covers the recent development of chalcone hybrids as antimalarial agents. The critical aspects of the design and structure–activity relationship of these compounds are also discussed. 相似文献
43.
44.
To examine the knowledge level, behaviors, and psychological status of the Chinese population during the COVID-19 pandemic, and to explore the differences between urban and rural areas.We carried out a cross-sectional survey of the knowledge, behaviors related to COVID-19, and mental health in a probability sample of 3001 community residents in 30 provinces or districts across China from February 16–23, 2020. Convenience sampling and a snowball sampling were adopted. We used General Anxiety Disorder (GAD), the 9-item Patient Health Questionnaire (PHQ-9), and knowledge and behaviors questionnaire of community residents regarding COVID-19 designed by us to investigate the psychological status, disease-related knowledge, and the behavior of Chinese urban and rural residents during the pandemic.The average score of anxiety and depression among urban residents was 9.15 and 11.25, respectively, while the figures in rural areas were 8.69 and 10.57, respectively. There was a statistically significant difference in the levels of anxiety (P < .01) and depression (P < .01). Urban participants reported significantly higher levels of knowledge regarding COVID-19 in all aspects (transmission, prevention measures, symptoms of infection, treatment, and prognosis) (P < .01), compared to their rural counterparts. While a majority of respondents in urban areas obtained knowledge through WeChat, other apps, and the Internet (P < .01), residents in rural areas accessed information through interactions with the community (P < .01). Urban residents fared well in exchanging knowledge about COVID-19 and advising others to take preventive measures (P < .01), but fared poorly in advising people to visit a hospital if they displayed symptoms of the disease, compared to rural residents (P < .01). Regression analysis with behavior showed that being female (OR = 2.106, 95%CI = 1.259–3.522), aged 18 ≤ age < 65 (OR = 4.059, 95%CI = 2.166–7.607), being satisfied with the precautions taken by the community (OR = 2.594, 95%CI = 1.485–4.530), disinfecting public facilities in the community (OR = 2.342, 95%CI = 1.206–4.547), having knowledge of transmission modes (OR = 3.987, 95%CI: 2.039, 7.798), symptoms (OR = 2.045, 95%CI = 1.054–4.003), and outcomes (OR = 2.740, 95%CI = 1.513–4.962) of COVID-19, and not having anxiety symptoms (OR = 2.578, 95%CI = 1.127–5.901) were positively associated with affirmative behavior in urban areas. Being married (OR = 4.960, 95%CI = 2.608–9.434), being satisfied with the precautions taken by the community (OR = 2.484, 95%CI = 1.315–4.691), screening to ensure face mask wearing before entering the community (OR = 8.809, 95%CI = 2.649–19.294), and having knowledge about precautions (OR = 4.886, 95%CI = 2.604–9.167) and outcomes (OR = 2.657, 95%CI = 1.309–5.391) were positively associated with acceptable conduct in rural areas.The status of anxiety and depression among urban residents was more severe compared to those living in rural areas. There was a difference in being positively associated with constructive behaviors between rural and urban areas. 相似文献
45.
46.
Tian-Yuan Xiong Fang-Yang Huang Qi Liu Yong Peng Yuan-Ning Xu Jia-Fu Wei 《Annals of medicine》2020,52(7):361-366
Abstract
Background
Comorbidities are commonly seen in patients with coronavirus disease 2019 (COVID-19), but the clinical implication is not yet well-delineated. We aim to characterize the prevalence and clinical implications of comorbidities in patients with COVID-19. 相似文献47.
48.
49.
50.
Chen Rong Zhang Yuan Huang Lei Cheng Bi-heng Xia Zhong-yuan Meng Qing-tao 《Journal canadien d'anesthésie》2020,67(6):655-663
Canadian Journal of Anesthesia/Journal canadien d'anesthésie - To assess the management and safety of epidural or general anesthesia for Cesarean delivery in parturients with coronavirus... 相似文献