全文获取类型
收费全文 | 13556篇 |
免费 | 1158篇 |
国内免费 | 261篇 |
专业分类
耳鼻咽喉 | 218篇 |
儿科学 | 242篇 |
妇产科学 | 66篇 |
基础医学 | 1091篇 |
口腔科学 | 447篇 |
临床医学 | 1783篇 |
内科学 | 1433篇 |
皮肤病学 | 25篇 |
神经病学 | 1751篇 |
特种医学 | 900篇 |
外科学 | 1955篇 |
综合类 | 1668篇 |
一般理论 | 7篇 |
预防医学 | 1299篇 |
眼科学 | 69篇 |
药学 | 905篇 |
12篇 | |
中国医学 | 853篇 |
肿瘤学 | 251篇 |
出版年
2024年 | 8篇 |
2023年 | 270篇 |
2022年 | 494篇 |
2021年 | 794篇 |
2020年 | 722篇 |
2019年 | 661篇 |
2018年 | 584篇 |
2017年 | 622篇 |
2016年 | 537篇 |
2015年 | 569篇 |
2014年 | 994篇 |
2013年 | 1168篇 |
2012年 | 825篇 |
2011年 | 941篇 |
2010年 | 669篇 |
2009年 | 667篇 |
2008年 | 707篇 |
2007年 | 603篇 |
2006年 | 568篇 |
2005年 | 443篇 |
2004年 | 370篇 |
2003年 | 289篇 |
2002年 | 205篇 |
2001年 | 161篇 |
2000年 | 168篇 |
1999年 | 147篇 |
1998年 | 120篇 |
1997年 | 95篇 |
1996年 | 67篇 |
1995年 | 56篇 |
1994年 | 35篇 |
1993年 | 44篇 |
1992年 | 44篇 |
1991年 | 34篇 |
1990年 | 31篇 |
1989年 | 32篇 |
1988年 | 39篇 |
1987年 | 26篇 |
1986年 | 15篇 |
1985年 | 22篇 |
1984年 | 17篇 |
1983年 | 14篇 |
1982年 | 20篇 |
1981年 | 13篇 |
1980年 | 10篇 |
1979年 | 8篇 |
1978年 | 10篇 |
1977年 | 9篇 |
1976年 | 7篇 |
1975年 | 5篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
2.
《Health & place》2022
The aim of this study was to examine if citizen science contributes to gaining insight into community health and to the health of the citizen scientists themselves. Therefore, thirteen citizens in four deprived neighbourhoods were trained as citizen scientists to conduct research in their own communities. Results showed that the citizen scientists identified forty (health related) themes in their communities. The citizen scientists reported an increase in their overall self-perceived health which, however, was not significantly demonstrated in the prequestionnaire and postquestionnaire. 相似文献
3.
《Health & place》2022
We examined the associations between parks/sports facilities in local communities and the onset of functional disability among Japanese older adults. We further investigated the spatial spillover effects of parks/sports facilities in 1st-, 2nd-, and 3rd-degree neighboring communities. Data on the onset of functional disability, including date of onset, sex, age, and address (school district) of all older adults aged 65 years and older living in Kobe City were obtained from the public long-term care insurance database (163,348 men [190,831 person-year] and 200,443 women [230,464 person-year]). Multilevel proportional hazard regression analyses showed that the number of parks and sports facilities were negatively associated with the onset of functional disability among men. In particular, these associations were stronger for the adjacent district than for individuals’ living districts. Our results imply that involving multiple neighboring communities as the intervention unit is effective when utilizing community built environments for long-term care prevention in men. 相似文献
4.
在当前国际制药技术出现重大创新和变革、药品研发技术信息化和数字化程度不断发展,以及新型冠状病毒肺炎(COVID-19)疫情大流行的背景下,欧盟委员会为满足未竟临床需求、激励行业创新、增强监管系统应变能力、巩固欧盟药品监管体系国际地位,于2020年底发布了《欧洲药物战略》(Pharmaceutical Strategy for Europe,PSE)。PSE被视为欧洲未来5年卫生政策的“基石”,对欧洲制药领域发展和管理具有重要指导意义。通过对PSE制定背景及发展战略目标、具体举措等内容进行梳理分析,并结合中国COVID-19疫情防控与行业发展、药品科学监管与鼓励创新等实际工作提出政策建议。 相似文献
5.
6.
7.
外感病是感受六淫、疫毒等外界因素引起的疾病,现代医学认为其主要致病因素为细菌或病毒。在以肉身体验为主要认知手段的古代,中医学家不可能发现细菌或病毒的存在,因而中医学家往往以天人相应的整体观来把握认知外感病。由于外感病的发病与传播受到外界气候环境和社会环境的影响,尤与人体的内环境密切相关。有鉴于此,本文从“环境隐喻”的立场出发,对外感病发病的因机证治进行分析。外界的气候环境和社会环境容易被人们感受,而对于古代无法观察人体的内环境,作者借助《论语·季氏将伐颛臾》中“祸起萧墙”的故事,对人体内环境为何与外感病的发病关系密切作以阐释,并通过人参败毒散、达原饮等方证的案例式说明,揭示清理人体内外环境而达治疗外感病的机理。 相似文献
8.
9.
《Clinical neurophysiology》2021,132(9):2003-2011
ObjectiveA large N20 and P25 of the median nerve somatosensory evoked potential (SEP) predicts short survival in amyotrophic lateral sclerosis (ALS). We investigated whether high frequency oscillations (HFOs) over N20 are enlarged and associated with survival in ALS.MethodsA total of 145 patients with ALS and 57 healthy subjects were studied. We recorded the median nerve SEP and measured the onset-to-peak amplitude of N20 (N20o-p), and peak-to-peak amplitude between N20 and P25 (N20p-P25p). We obtained early and late HFO potentials by filtering SEP between 500 and 1 kHz, and measured the peak-to-peak amplitude. We followed up patients until endpoints (death or tracheostomy) and analyzed the relationship between SEP or HFO amplitudes and survival using a Cox analysis.ResultsPatients showed larger N20o-p, N20p-P25p, and early and late HFO amplitudes than the control values. N20p-P25p was associated with survival periods (p = 0.0004), while early and late HFO amplitudes showed no significant association with survival (p = 0.4307, and p = 0.6858, respectively).ConclusionsThe HFO amplitude in ALS is increased, but does not predict survival.SignificanceThe enlarged HFOs in ALS might be a compensatory phenomenon to the hyperexcitability of the sensory cortex pyramidal neurons. 相似文献
10.