全文获取类型
收费全文 | 53514篇 |
免费 | 2181篇 |
国内免费 | 649篇 |
专业分类
耳鼻咽喉 | 244篇 |
儿科学 | 1494篇 |
妇产科学 | 877篇 |
基础医学 | 4225篇 |
口腔科学 | 1247篇 |
临床医学 | 4084篇 |
内科学 | 13360篇 |
皮肤病学 | 492篇 |
神经病学 | 4244篇 |
特种医学 | 817篇 |
外国民族医学 | 1篇 |
外科学 | 7163篇 |
综合类 | 3642篇 |
一般理论 | 1篇 |
预防医学 | 4998篇 |
眼科学 | 429篇 |
药学 | 5001篇 |
28篇 | |
中国医学 | 2441篇 |
肿瘤学 | 1556篇 |
出版年
2024年 | 105篇 |
2023年 | 948篇 |
2022年 | 1482篇 |
2021年 | 2239篇 |
2020年 | 1710篇 |
2019年 | 3733篇 |
2018年 | 3011篇 |
2017年 | 2129篇 |
2016年 | 1174篇 |
2015年 | 1043篇 |
2014年 | 2267篇 |
2013年 | 2229篇 |
2012年 | 1867篇 |
2011年 | 2195篇 |
2010年 | 1609篇 |
2009年 | 1486篇 |
2008年 | 1525篇 |
2007年 | 1372篇 |
2006年 | 1056篇 |
2005年 | 834篇 |
2004年 | 669篇 |
2003年 | 593篇 |
2002年 | 433篇 |
2001年 | 329篇 |
2000年 | 288篇 |
1999年 | 248篇 |
1998年 | 205篇 |
1997年 | 200篇 |
1996年 | 185篇 |
1995年 | 177篇 |
1994年 | 177篇 |
1993年 | 127篇 |
1992年 | 119篇 |
1991年 | 96篇 |
1990年 | 66篇 |
1989年 | 74篇 |
1986年 | 64篇 |
1985年 | 1462篇 |
1984年 | 2496篇 |
1983年 | 2314篇 |
1982年 | 1721篇 |
1981年 | 1814篇 |
1980年 | 1508篇 |
1979年 | 1328篇 |
1978年 | 1147篇 |
1977年 | 662篇 |
1976年 | 1108篇 |
1975年 | 978篇 |
1974年 | 812篇 |
1973年 | 784篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
目的 按照国家计划抽验要求,评价国内不同企业生产的注射用盐酸柔红霉素的质量。方法 按国家标准检验与探索性研究相结合,对抽验样品进行检验,对检验结果进行统计分析。结果 共抽取样品17批次,按国家标准检验合格率100.0%。探索性研究对主要杂质的来源与结构进行了研究;建立溶液的澄清度检查方法;对包材相容性及稳定性进行了考察。结论 目前国内注射用盐酸柔红霉素总体质量较好;现行标准有待进一步提高,建议现行标准修订有关物质检查方法,增加特定杂质的控制,增加溶液的澄清度检查;建议企业优化生产工艺,以提高产品质量。 相似文献
2.
3.
Susan E. Hickman Alexia M. Torke Greg A. Sachs Rebecca L. Sudore Anne L. Myers Qing Tang Giorgos Bakoyannis Bernard J. Hammes 《Journal of pain and symptom management》2019,57(6):1143-1150.e5
ContextIt is especially important that patients are well informed when making high-stakes, preference-sensitive decisions like those on the Physician Orders for Life-Sustaining Treatment (POLST) form. However, there is currently no way to easily evaluate whether patients understand key concepts when making these important decisions.ObjectivesTo develop a POLST knowledge survey.MethodsExpert (n = 62) ratings of key POLST facts were used to select items for a POLST knowledge survey. The survey was administered to nursing facility residents (n = 97) and surrogate decision-makers (n = 112). A subset (n = 135) were re-administered the survey after a standardized advance care planning discussion to assess the scale's responsiveness to change.ResultsThe 19-item survey demonstrated adequate reliability (α = 0.72.). Residents' scores (x = 11.4, standard deviation 3.3) were significantly lower than surrogate scores (x = 14.7, standard deviation 2.5) (P < 0.001). Scores for both groups increased significantly after administration of a standardized advance care planning discussion (P < 0.001). Although being a surrogate, age, race, education, cognitive functioning, and health literacy were significantly associated with higher POLST Knowledge Survey scores in univariate analyses, only being a surrogate (P < 0.001) and being white (P = 0.028) remained significantly associated with higher scores in multivariate analyses.ConclusionThe 19-item POLST Knowledge Survey demonstrated adequate reliability and responsiveness to change. Findings suggest the survey could be used to identify knowledge deficits and provide targeted education to ensure adequate understanding of key clinical decisions when completing POLST. 相似文献
4.
5.
目的本文主要研究和探讨护理干预对放疗科头颈部肿瘤放疗患者生活质量的影响。方法将我院2017年2月份至2018年10月份收治的100例头颈部肿瘤放疗患者作为本次研究的对象,在随机原则的指导下把100例患者分为对照组和实验组,每组患者的数量为50例。对照组患者给予常规护理,实验组患者实施护理干预,对两组患者的生活质量、睡眠质量、护理满意度和护理依从性等进行对比分析。结果在生活质量、睡眠质量、护理满意度和护理依从性等方面,组间进行对比分析,实验组都明显优于对照组,P<0.05差异具有统计学意义。结论对头颈部肿瘤放疗患者实施护理干预可以让患者的生活质量、睡眠质量、护理依从性以及护理满意度等都得到显著的改善,从而让患者以一种积极、乐观的心态接受放疗,这对于放疗效果的提高具有重要的作用。总之,这一护理模式应该在临床中进行推广和使用。 相似文献
6.
Marta Rozanski Valentin Neuhaus Emily Thornton Stéphanie J. E. Becker James P. Rathmell David Ring 《Journal of hand and microsurgery》2015,7(1):30-35
This study used the National Survey of Ambulatory Surgery (NSAS) database to measure the incidence of and risk factors for symptoms in the ambulatory surgery center and problems within 24 h after isolated carpal tunnel release (CTR). The NSAS contained records on 400,000 adult patients with carpal tunnel syndrome who were treated with CTR in 2006, based on ICD-9 codes. The type of anesthesia used and factors associated with symptoms and problems were sought in bivariate and multivariable statistical analyses. The mean duration of the procedure was 16 ± 8.8 min. Only 5 % were performed under local anesthesia without sedation, 45 % with IV sedation, 28 % regional anesthesia, and 19 % general anesthesia. Symptoms in the ambulatory surgery center or a problem within 24 h after discharge were recorded in 10 % of patients, all of them minor and transient, including difficulties with pain and its treatment. The strongest risk factors were male sex, age of 45 years and older, and participation of an anesthesiologist. Local anesthesia and regional anesthesia were associated with more perioperative symptoms and postoperative problems. Most CTR are performed with some sedation in the United States. CTR is a safe procedure: one in 10 patients will experience a minor issue in the perioperative or immediate postoperative period. 相似文献
7.
8.
Family-centered care (FCC) for sick newborns is emerging as a paradigmatic shift in the practice of facility-based newborn care. It seeks to transforming a provider-centered model into a client-centered one and thus build a new therapeutic alliance. FCC is the cornerstone of continuum of care, imparting caregiving competencies to parents/caregivers both within institutions as well as after the discharge. This has potential gains for the newborn, family members, and facility-level staff. The initial model piloted in tertiary-care settings is now undergoing translation at five sites across the country; the outcomes are keenly awaited. 相似文献
9.
10.