全文获取类型
收费全文 | 62867篇 |
免费 | 5617篇 |
国内免费 | 2116篇 |
专业分类
耳鼻咽喉 | 793篇 |
儿科学 | 715篇 |
妇产科学 | 458篇 |
基础医学 | 5103篇 |
口腔科学 | 1314篇 |
临床医学 | 7239篇 |
内科学 | 5648篇 |
皮肤病学 | 717篇 |
神经病学 | 2897篇 |
特种医学 | 1332篇 |
外国民族医学 | 5篇 |
外科学 | 3826篇 |
综合类 | 12730篇 |
现状与发展 | 7篇 |
一般理论 | 1篇 |
预防医学 | 7379篇 |
眼科学 | 694篇 |
药学 | 9451篇 |
216篇 | |
中国医学 | 8443篇 |
肿瘤学 | 1632篇 |
出版年
2024年 | 147篇 |
2023年 | 1147篇 |
2022年 | 1832篇 |
2021年 | 3200篇 |
2020年 | 2840篇 |
2019年 | 2049篇 |
2018年 | 2083篇 |
2017年 | 2233篇 |
2016年 | 2407篇 |
2015年 | 2308篇 |
2014年 | 4720篇 |
2013年 | 4734篇 |
2012年 | 4555篇 |
2011年 | 4671篇 |
2010年 | 3583篇 |
2009年 | 2942篇 |
2008年 | 2999篇 |
2007年 | 3217篇 |
2006年 | 2588篇 |
2005年 | 2200篇 |
2004年 | 1890篇 |
2003年 | 1692篇 |
2002年 | 1255篇 |
2001年 | 1173篇 |
2000年 | 931篇 |
1999年 | 859篇 |
1998年 | 670篇 |
1997年 | 589篇 |
1996年 | 517篇 |
1995年 | 523篇 |
1994年 | 475篇 |
1993年 | 414篇 |
1992年 | 359篇 |
1991年 | 314篇 |
1990年 | 295篇 |
1989年 | 266篇 |
1988年 | 230篇 |
1987年 | 220篇 |
1986年 | 189篇 |
1985年 | 265篇 |
1984年 | 178篇 |
1983年 | 139篇 |
1982年 | 174篇 |
1981年 | 98篇 |
1980年 | 102篇 |
1979年 | 60篇 |
1978年 | 70篇 |
1977年 | 41篇 |
1976年 | 44篇 |
1974年 | 26篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
以“七麦数据”网站收录的中医移动医疗App作为研究对象,采用网络调查法和文献分析法,根据“七麦数据”对移动医疗App的分类,结合中医移动医疗App的信息服务内容和特点,将筛选出的中医移动医疗App划分为医疗健康类、中医养生类、知识传播类、全面综合类,并根据“七麦数据”网站中对各类中医移动医疗App的打分及累计下载量筛选出最具代表性的12款中医移动医疗App,从全面性、人性化、安全性、实用性4个一级指标和40个二级指标对其信息服务现状进行评价,指出当前中医移动医疗App信息服务存在的问题并提出建议。 相似文献
2.
3.
4.
5.
6.
《台湾医志》2022,121(12):2490-2500
Background/PurposeOrthokeratology (Ortho-K), atropine eye drops and combined atropine with Ortho-K are proven to be effective ways to prevent myopic progression in many studies, but there is scarce evidence regarding the comparative efficacy of different dosages of atropine,Ortho-K, and combined atropine with Ortho-K for childhood myopia.MethodsWe performed a network meta-analysis (NMA) to assess the relative efficacy of the aforementioned interventions for myopic progression; moreover, we calculated the surface under cumulative ranking area (SUCRA) to determine the relative ranking of treatments.ResultsWe identified 19 randomized controlled trials (3435 patients). NMA revealed that 0.01%–1% atropine, Ortho-K, and 0.01% atropine combined with Ortho-K inhibited axial elongation (AL) over one year. For refractive change, SUCRA analysis revealed that the hierarchy was high-dose (0.5%–1%), moderate-dose (0.1%–0.25%), and low-dose (0.01%–0.05%) atropine. Regarding AL, SUCRA analysis revealed the following hierarchy: Ortho-K combined with 0.01% atropine, high-dose atropine, moderate-dose atropine, Ortho-K, and low-dose atropine.ConclusionIn conclusion, we found that atropine (0.01%–1%), Ortho-K, and 0.01% atropine combined with Ortho-K could significantly slow down myopia progression. The atropine efficacy followed a dose-related pattern; moreover, Ortho-K and low-dose atropine showed similar efficacy. There was a synergistic effect of using 0.01% atropine combined with Ortho-K, and it showed comparable efficacy to that of high-dose atropine. 相似文献
7.
Defining con-founders that affect the reliability of diagnostic tests for coronavirus disease 2019 is vital to breaking the chain of infection. The elderly population is a higher risk group for the emerging virus. However, gender seems to exert a critical role in modifying the infection risk among women owing to hormonal changes. The menopause transition is an exceptional period for older women where the protective and immunomodulatory effects of the estrogen hormone are lost. Accordingly, attention should be given to postmenopausal women since they will have an increased risk compared to their pre-menopausal peers. 相似文献
8.
《Orthopaedics and Trauma》2022,36(6):304-310
Congenital vertical talus (CVT) is a rare foot deformity that presents with a rigid flat foot at birth. CVT can present as an isolated abnormality in the newborn, however in at least 50% of cases in association with other conditions. Full neuro-axial imaging is essential to detect any associated neurologic problems. Radiographs of the foot, including forced plantar and dorsiflexion laterals, are diagnostic. Gold standard modern treatment uses the Dobbs method of serial manipulation and casting with minimally-invasive stabilization of the talonavicular joint and Achilles tendon tenotomy. 相似文献
9.
Discrimination towards individuals with disabilities is problematic within nursing. There have been calls to increase diversity in nursing and this includes embracing nurses with disabilities. Increasing diversity in nursing requires increasing diversity among nursing students; in this way, nurse educators are gatekeepers to the profession. Clinical education is a crucial element of nursing education, yet there have been very few studies related to the clinical education of nursing students with disabilities. There have been no studies of attitudes of acute care nurse preceptors toward students with disabilities in the United States. This gap is important as the majority of clinical experiences occur in the acute care environment. Utilizing a focused ethnography, semi-structured interviews were conducted with 20 acute care nurses with at least two years’ experience precepting students. While positive feelings about nursing students with disabilities were shared, thoughts and behavioral intentions remained negative. Six themes emerged: safety, barriers, otherness, communicating to meet needs, disclosure, and student versus colleague. Attitudinal barriers are the primary barriers faced by individuals with disabilities in becoming and practicing as nurses. Nurses in practice and education must embrace more inclusive attitudes towards individuals with disabilities. 相似文献
10.
《Pancreatology》2022,22(8):1175-1180
BackgroundHepatic steatosis has been described as a common finding in adults following total pancreatectomy with islet autotransplantation (TPIAT) but it is unknown if this occurs in children and adolescents.ObjectivesTo define the frequency of post-TPIAT hepatic steatosis in a sample of children and adolescents and to identify clinical predictors of incident steatosis post-TPIAT.MethodsIn this prospective study, consecutive participants at least 1-month post-TPIAT underwent a liver MRI with proton density fat fraction (PDFF) and blood draw at our pediatric academic medical center between April 2021 and January 2022. Comparison clinical pre-TPIAT liver MRI or ultrasound and insulin use and graft function data were extracted from the medical record. T-tests were used for the comparison of means across continuous variables between participants with and without post-TPIAT steatosis.ResultsA total of 20 participants (mean: 13 ± 4 years; 12 female) were evaluated. Mean liver PDFF at research MRI was 7.4 ± 6.2% (range: 2–25%). Seven participants (35%) had categorical hepatic steatosis (PDFF>5%) post-TPIAT, five of whom had pre-TPIAT steatosis, reflecting a 13% (2/15; 95% CI: 2–40%) incidence of post-TPIAT steatosis. Participant characteristics were not significantly different between subgroups with and without post-TPIAT steatosis. Mean PDFF at research MRI was not different between graft function subgroups (7.5% optimal/good vs. 7.3% marginal/failure; p = .96).ConclusionOur study shows a moderate prevalence but low incidence of hepatic steatosis in a small sample of children and adolescents post-TPIAT. This study raises questions about a causal relationship between TPIAT and hepatic steatosis. 相似文献