全文获取类型
收费全文 | 151494篇 |
免费 | 14137篇 |
国内免费 | 895篇 |
专业分类
耳鼻咽喉 | 471篇 |
儿科学 | 4593篇 |
妇产科学 | 3882篇 |
基础医学 | 8525篇 |
口腔科学 | 5212篇 |
临床医学 | 36646篇 |
内科学 | 15356篇 |
皮肤病学 | 1074篇 |
神经病学 | 7546篇 |
特种医学 | 1380篇 |
外科学 | 8656篇 |
综合类 | 12908篇 |
现状与发展 | 3篇 |
一般理论 | 124篇 |
预防医学 | 45781篇 |
眼科学 | 556篇 |
药学 | 8011篇 |
190篇 | |
中国医学 | 1512篇 |
肿瘤学 | 4100篇 |
出版年
2024年 | 518篇 |
2023年 | 4821篇 |
2022年 | 6165篇 |
2021年 | 8459篇 |
2020年 | 8738篇 |
2019年 | 8386篇 |
2018年 | 7569篇 |
2017年 | 7023篇 |
2016年 | 6514篇 |
2015年 | 6269篇 |
2014年 | 10739篇 |
2013年 | 13025篇 |
2012年 | 8771篇 |
2011年 | 9286篇 |
2010年 | 6839篇 |
2009年 | 7056篇 |
2008年 | 6657篇 |
2007年 | 6746篇 |
2006年 | 5773篇 |
2005年 | 4574篇 |
2004年 | 3873篇 |
2003年 | 3140篇 |
2002年 | 2325篇 |
2001年 | 2187篇 |
2000年 | 1864篇 |
1999年 | 1443篇 |
1998年 | 1230篇 |
1997年 | 970篇 |
1996年 | 855篇 |
1995年 | 619篇 |
1994年 | 563篇 |
1993年 | 535篇 |
1992年 | 416篇 |
1991年 | 362篇 |
1990年 | 307篇 |
1989年 | 238篇 |
1988年 | 259篇 |
1987年 | 203篇 |
1986年 | 160篇 |
1985年 | 198篇 |
1984年 | 151篇 |
1983年 | 98篇 |
1982年 | 102篇 |
1981年 | 81篇 |
1980年 | 84篇 |
1979年 | 62篇 |
1978年 | 60篇 |
1977年 | 56篇 |
1976年 | 51篇 |
1975年 | 45篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
Child benefits are typically paid from birth. This paper asks whether starting universal child benefits in pregnancy leads to improvements in infant health. Leveraging administrative birth registry and hospital microdata from England and Wales, I study the effects of the Health in Pregnancy Grant, a universal conditional cash transfer equivalent to three months of child benefit (190 GBP) as a lump sum to pregnant mothers from 2009 to 2011. I exploit quasi-experimental variation in eligibility with a regression discontinuity design in the date of birth of the baby. I find that the policy increased birth weight by 8–12 grams on average, reduced low birth weight (2500 g) by 3-6 percent and decreased prematurity by 9–11 percent. Younger mothers, particularly those living in deprived areas, benefit the most. I present evidence that the mechanisms are unlikely to be antenatal care, nutrition or smoking, with reductions in stress remaining a possible explanation. 相似文献
2.
Anela Stanic Denis Rybin Francis Cannata Carole Hohl Jennifer Brody Jessie Gaeta 《AIDS care》2021,33(1):1-9
ABSTRACT The lack of stable housing can impair access and continuity of care for patients living with human immunodeficiency virus (HIV). This study investigated the relationship between housing status assessed at multiple time points and several core HIV-related outcomes within the same group of HIV patients experiencing homelessness. Patients with consistently stable housing (CSH) during the year were compared to patients who lacked CSH (non-CSH group). The study outcomes included HIV viral load (VL), CD4 counts, and health care utilization. Multivariable and propensity weighted analyses were used to assess outcomes adjusting for potential group differences. Of 208 patients, 88 (42%) had CSH and 120 (58%) were non-CSH. Patients with CSH had significantly higher proportion of VL suppression and higher mean CD4 counts. The frequency of nurse visits in the CSH group was less than a half of that in the non-CSH group. Patients with CSH were less likely to be admitted to the medical respite facility, and if admitted, their length of stay was about a half of that for the non-CSH group. Our study findings show that patients with CSH had significantly better HIV virologic control and immune status as well as improved health care utilization. 相似文献
3.
4.
5.
6.
7.
8.
《Gaceta sanitaria / S.E.S.P.A.S》2016,30(5):389-392
Life expectancy for people with severe mental disorders is up to 25 years less in comparison to the general population, mainly due to diseases caused or worsened by smoking. However, smoking is usually a neglected issue in mental healthcare settings. The aim of this article is to describe a strategy to improve tobacco control in the hospital mental healthcare services of Catalonia (Spain). To bridge this gap, the Catalan Network of Smoke-free Hospitals launched a nationwide bottom-up strategy in Catalonia in 2007. The strategy relied on the creation of a working group of key professionals from various hospitals —the early adopters— based on Rogers’ theory of the Diffusion of Innovations. In 2016, the working group is composed of professionals from 17 hospitals (70.8% of all hospitals in the region with mental health inpatient units). Since 2007, tobacco control has improved in different areas such as increasing mental health professionals’ awareness of smoking, training professionals on smoking cessation interventions and achieving good compliance with the national smoking ban. The working group has produced and disseminated various materials, including clinical practice and best practice guidelines, implemented smoking cessation programmes and organised seminars and training sessions on smoking cessation measures in patients with mental illnesses. The next challenge is to ensure effective follow-up for smoking cessation after discharge. While some areas of tobacco control within these services still require significant improvement, the aforementioned initiative promotes successful tobacco control in these settings. 相似文献
9.
Louise Danielsson RPT MSc Susanne Rosberg RPT PhD 《Scandinavian journal of caring sciences》2015,29(3):501-509
Although depression is associated to physical discomfort, meanings of the body in depression are rarely addressed in clinical research. Drawing on the concept of the lived body, this study explores depression as an embodied phenomenon. Using a hermeneutic phenomenological approach, the analysis of narrative‐based interviews with 11 depressed adults discloses a thematic structure of an embodied process of an ambiguous striving against fading. Five subthemes elicit different dimensions of this process, interpreted as disabling or enabling: feeling estranged, feeling confined, feeling burdensome, sensing life and seeking belongingness. In relation to clinical practice, we suggest that the interdisciplinary team can focus on enhancing the enabling dimensions, for example through guided physical activities to support the patient to feel more alive, capable and connected. Moreover, we suggest that the treatment process benefits from an increased awareness of the ambiguity in the patient's struggle, acknowledging both destructive and recharging elements of the withdrawing, and the perceived conflict in‐between. 相似文献
10.
目的通过Meta分析评价安宁疗护对社区临终患者生活质量的影响。方法计算机检索PubMed、CINAHL、ScienceDirect、MEDLINE、Cochrane Library、SAGE数据库、中国知网、维普中文科技期刊数据库、万方数据库和中国生物医学文献数据库中安宁疗护对社区临终患者的随机对照试验,由2名研究人员独立筛选文献并提取资料,对符合质量标准的随机对照试验进行Meta分析。结果共纳入7篇文献,包括1095名社区临终患者。Meta分析结果显示,安宁疗护可以改善社区临终患者的总体生活质量(SMD=0.48,95%CI0.07~0.88,P=0.02)和情绪功能(SMD=1.27,95%CI0.59~1.95,P<0.001),在改善生活质量的躯体功能、角色功能、认知功能和社会功能水平上差异无统计学意义(P>0.05)。结论安宁疗护能改善社区临终患者的总体生活质量和情绪功能,但对生活质量其他功能的改善情况还需要设计更加规范、多中心、大样本的随机对照试验进一步证实。 相似文献