全文获取类型
收费全文 | 126133篇 |
免费 | 12238篇 |
国内免费 | 1408篇 |
专业分类
耳鼻咽喉 | 1074篇 |
儿科学 | 2759篇 |
妇产科学 | 2270篇 |
基础医学 | 11011篇 |
口腔科学 | 4981篇 |
临床医学 | 23566篇 |
内科学 | 13013篇 |
皮肤病学 | 1006篇 |
神经病学 | 8215篇 |
特种医学 | 1835篇 |
外国民族医学 | 5篇 |
外科学 | 6150篇 |
综合类 | 11454篇 |
现状与发展 | 6篇 |
一般理论 | 94篇 |
预防医学 | 38374篇 |
眼科学 | 809篇 |
药学 | 6733篇 |
145篇 | |
中国医学 | 1865篇 |
肿瘤学 | 4414篇 |
出版年
2024年 | 295篇 |
2023年 | 3387篇 |
2022年 | 3312篇 |
2021年 | 6779篇 |
2020年 | 6836篇 |
2019年 | 6307篇 |
2018年 | 5628篇 |
2017年 | 5418篇 |
2016年 | 5296篇 |
2015年 | 5271篇 |
2014年 | 8256篇 |
2013年 | 11140篇 |
2012年 | 7148篇 |
2011年 | 7688篇 |
2010年 | 5860篇 |
2009年 | 6069篇 |
2008年 | 5812篇 |
2007年 | 5727篇 |
2006年 | 5090篇 |
2005年 | 3981篇 |
2004年 | 3473篇 |
2003年 | 3013篇 |
2002年 | 2295篇 |
2001年 | 2131篇 |
2000年 | 1838篇 |
1999年 | 1450篇 |
1998年 | 1225篇 |
1997年 | 1028篇 |
1996年 | 877篇 |
1995年 | 773篇 |
1994年 | 669篇 |
1993年 | 578篇 |
1992年 | 513篇 |
1991年 | 477篇 |
1990年 | 384篇 |
1989年 | 341篇 |
1988年 | 349篇 |
1987年 | 278篇 |
1986年 | 278篇 |
1985年 | 403篇 |
1984年 | 354篇 |
1983年 | 223篇 |
1982年 | 277篇 |
1981年 | 207篇 |
1980年 | 222篇 |
1979年 | 172篇 |
1978年 | 119篇 |
1977年 | 108篇 |
1976年 | 105篇 |
1975年 | 81篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
12.
BackgroundHamstring strain injuries are the most common type of injury in elite football and are associated with a high risk of reinjury, particularly those involving the intramuscular tendon (IMT). Limited information is available regarding the rehabilitation and return to sport (RTS) processes following such injuries. This case study describes the clinical presentation of an elite football player following IMT hamstring injury, their on- and off-pitch rehabilitation alongside performance monitoring throughout RTS and beyond.Case scenarioAn elite football player suffered a grade 2c hamstring injury during an English Premier League (EPL) match. The player underwent early post-injury management, alongside progressive off-pitch physical preparation. The ‘control-chaos continuum’ was used as a framework for on-pitch rehabilitation to prepare the player for a return to full team training and competition. Objective and subjective markers of the player's response to progressive on- and off-pitch loading were monitored throughout RTS and beyond.OutcomesThe player returned to on-pitch rehabilitation after 11 days, to full team training having achieved weekly pre-injury chronic running load outputs after 35 days and played in the EPL 40 days post-injury. The player did not suffer reinjury for the rest of the EPL season.ConclusionAn understanding the unique structural and mechanical properties of the IMT, alongside expected RTS timeframes are important to inform rehabilitation and decision-making processes post-injury. Performance and frequent load-response monitoring throughout RTS and beyond, in conjunction with practitioner experience and effective communication are critical in facilitating effective RTS and reduce risk of reinjury following IMT injury. 相似文献
13.
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
14.
15.
16.
Hannah C. Nordhues Anjali Bhagra Natya N. Stroud Jennifer A. Vencill Carol L. Kuhle 《Mayo Clinic proceedings. Mayo Clinic》2021,96(7):1907-1920
The coronavirus disease 2019 (COVID-19) pandemic has rapidly created widespread impacts on global health and the economy. Data suggest that women are less susceptible to severe illness. However, sex-disaggregated data are incomplete, leaving room for misinterpretation, and focusing only on biologic sex underestimates the gendered impact of the pandemic on women. This narrative review summarizes what is known about gender disparities during the COVID-19 pandemic and the economic, domestic, and health burdens along with overlapping vulnerabilities related to the pandemic. In addition, this review outlines recommended strategies that advocacy groups, community leaders, and policymakers should implement to mitigate the widening gender disparities related to COVID-19. 相似文献
17.
18.
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
19.
20.