全文获取类型
收费全文 | 13388篇 |
免费 | 1278篇 |
国内免费 | 330篇 |
专业分类
耳鼻咽喉 | 92篇 |
儿科学 | 188篇 |
妇产科学 | 82篇 |
基础医学 | 1503篇 |
口腔科学 | 319篇 |
临床医学 | 1613篇 |
内科学 | 2114篇 |
皮肤病学 | 113篇 |
神经病学 | 1032篇 |
特种医学 | 1187篇 |
外国民族医学 | 1篇 |
外科学 | 1188篇 |
综合类 | 1495篇 |
一般理论 | 10篇 |
预防医学 | 1924篇 |
眼科学 | 204篇 |
药学 | 1008篇 |
10篇 | |
中国医学 | 532篇 |
肿瘤学 | 381篇 |
出版年
2024年 | 31篇 |
2023年 | 314篇 |
2022年 | 436篇 |
2021年 | 803篇 |
2020年 | 594篇 |
2019年 | 600篇 |
2018年 | 571篇 |
2017年 | 550篇 |
2016年 | 527篇 |
2015年 | 560篇 |
2014年 | 854篇 |
2013年 | 1139篇 |
2012年 | 778篇 |
2011年 | 822篇 |
2010年 | 671篇 |
2009年 | 597篇 |
2008年 | 612篇 |
2007年 | 581篇 |
2006年 | 475篇 |
2005年 | 442篇 |
2004年 | 393篇 |
2003年 | 355篇 |
2002年 | 270篇 |
2001年 | 257篇 |
2000年 | 186篇 |
1999年 | 166篇 |
1998年 | 139篇 |
1997年 | 154篇 |
1996年 | 150篇 |
1995年 | 122篇 |
1994年 | 112篇 |
1993年 | 71篇 |
1992年 | 81篇 |
1991年 | 72篇 |
1990年 | 56篇 |
1989年 | 62篇 |
1988年 | 62篇 |
1987年 | 49篇 |
1986年 | 44篇 |
1985年 | 37篇 |
1984年 | 37篇 |
1983年 | 29篇 |
1982年 | 21篇 |
1981年 | 29篇 |
1980年 | 23篇 |
1979年 | 13篇 |
1978年 | 11篇 |
1977年 | 7篇 |
1976年 | 11篇 |
1974年 | 6篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
《The Journal for Nurse Practitioners》2022,18(4):372-376
The effects of climate change include floods, hurricanes, heat waves, and fires; these natural disasters can result in respiratory, cardiovascular, and psychological harm in older adults, who experience the highest morbidity and mortality during heat waves. Advanced practice registered nurses (APRNs) need education on preparing, assessing, and treating older adults for climate-change disasters, especially heat waves. This article will help APRNs understand the effects of climate-change events on the vulnerable older adults and advocates for the need to integrate health effects of climate change into curricula, practicums, policy, and research agendas. 相似文献
2.
采用Mimics对心脏进行三维重构,用3-matic进行模型优化以及模型误差分析,对左心室室壁运动做速度分布假设,基于UDF宏文件对左心室室壁运动编写程序,将血液视为非牛顿流体,采用动网格技术研究不同血压对左心室血液流动的影响。模拟发现当左心室收缩时,压力梯度明显,内部压力减小。当左心室舒张时,内部压力逐渐增高。二尖瓣口处的速率先增大后减小。血压升高,左心室内剪切应力持续增大,极易破坏红细胞结构,产生溶血现象,导致心脏功能紊乱。 相似文献
3.
4.
目的对比动力髋螺钉(dynamic hip screw,DHS)治疗和股骨近端抗旋髓内钉(proximal femoral nail anti-rotation,PFNA)固定治疗老年股骨粗隆间骨折疗效。方法纳入本院收治的45例采用PFNA固定治疗的老年股骨粗隆间骨折患者作为研究组,研究时间为2017年11月-2018年11月;回顾性分析2016年11月-2017年11月在我院采用DHS治疗的45例老年股骨粗隆间骨折患者的临床资料,作为对照组。记录两组的相关手术指标,观察手术并发症情况。结果研究组的手术时间和骨折愈合时间均短于对照组,术中出血量明显少于对照组,术后疼痛VAS评分均明显低于对照组(P<0.05)。对照组的并发症发生率高于研究组(P<0.05)。结论PFNA固定治疗比DHS治疗老年股骨粗隆间骨折更加安全有效,值得临床借鉴和应用。 相似文献
5.
6.
AbstractGaining a better grasp on factors related to changes in alcohol use is of particular interest for clinicians. Past research has highlighted a negative link between future time perspective (i.e. a disposition guiding how individuals consider and act regarding their future) and alcohol misuse. However, much remains at stake in the understanding of this association. The objective of this research was to explore bidirectional relationships between future time perspective and severity of alcohol-related problems, in a clinical setting. The sample includes 79 patients followed up in an outpatient alcohol treatment centre. Two measurement times were planned: at entry into care and 6 months later. Multiple linear regression analyses were carried out, controlling for sociodemographic variables. We found that baseline future time perspective predicted level of alcohol-related problems after 6 months in treatment, even when effects of baseline alcohol-related problems and sociodemographic variables were controlled. This study shows that the way patients see and position themselves regarding their future can affect level of alcohol-related problems. It may be useful for clinicians to identify patients with low future time perspective to offer tailored interventions and consider this dimension as a resource for change. 相似文献
7.
8.
9.
目的 研究新型冠状病毒肺炎常态化疫情防控下应急梯队护士的真实体验。提出针对性改善护士的心理状况的方法和建议。方法 于2021年10月选取上海市静安区闸北中心医院应急梯队的护士11名为研究对象,对其进行半结构式面对面谈话,并采用Colaizzi七步分析法进行资料分析。结果 进入应急梯队的护士普遍存在着紧张焦虑,情绪低落,身心疲惫等心理问题。而执行完应急任务后的成就感,社会的认同,多方的理解支持,有利缓解心理压力。结论 通过对新型冠状病毒肺炎常态化疫情防控下应急梯队护士的真实体验的了解,护士普遍存在各种心理问题,需要给予针对性的干预措施,提高应急梯队成员的心理素质和应急能力。 相似文献
10.
《Vaccine》2021,39(34):4759-4765
Dengue vaccination would enhance the control of dengue, one of the most frequent vector-borne viral diseases globally. CYD-TDV is the first dengue vaccine to be licensed, but global uptake has been hampered due to its use being limited to seropositive persons aged 9 years and above, and the need for a 3-dose schedule. The Partnership for Dengue Control (PDC) organized a meeting with key opinion leaders and stakeholders to deliberate on implementation strategies for the use of CYD-TDV. New data have emerged that support the shortening of the primary schedule from a 3 to 2 dose schedule, extending the age range below 9 to 6 years of age, and expanding the indication from endemic populations to also include travelers to endemic areas. Cost-effectiveness may improve with the modified 2-dose regimen and with multiple testing. Strategies to implement a dengue vaccination program have been developed, in particular school-based strategies. A range of delivery scenarios can then be considered, using various settings for each step of the intervention. However, several challenges remain, including communication about limiting the use of this vaccine to seropositive individuals only. Affordability will vary from country to country, as will government commitment and community acceptance. Well-tailored communication strategies that target key stakeholders are expected to make up a significant part of any future dengue vaccination program. 相似文献