全文获取类型
收费全文 | 17413篇 |
免费 | 1844篇 |
国内免费 | 1092篇 |
专业分类
耳鼻咽喉 | 185篇 |
儿科学 | 118篇 |
妇产科学 | 199篇 |
基础医学 | 1939篇 |
口腔科学 | 237篇 |
临床医学 | 2373篇 |
内科学 | 2442篇 |
皮肤病学 | 156篇 |
神经病学 | 888篇 |
特种医学 | 558篇 |
外国民族医学 | 8篇 |
外科学 | 1687篇 |
综合类 | 3241篇 |
现状与发展 | 4篇 |
预防医学 | 1100篇 |
眼科学 | 376篇 |
药学 | 2106篇 |
34篇 | |
中国医学 | 1185篇 |
肿瘤学 | 1513篇 |
出版年
2024年 | 89篇 |
2023年 | 302篇 |
2022年 | 829篇 |
2021年 | 1089篇 |
2020年 | 848篇 |
2019年 | 603篇 |
2018年 | 629篇 |
2017年 | 594篇 |
2016年 | 570篇 |
2015年 | 921篇 |
2014年 | 1103篇 |
2013年 | 956篇 |
2012年 | 1277篇 |
2011年 | 1437篇 |
2010年 | 852篇 |
2009年 | 670篇 |
2008年 | 922篇 |
2007年 | 821篇 |
2006年 | 781篇 |
2005年 | 809篇 |
2004年 | 537篇 |
2003年 | 551篇 |
2002年 | 485篇 |
2001年 | 378篇 |
2000年 | 369篇 |
1999年 | 358篇 |
1998年 | 237篇 |
1997年 | 213篇 |
1996年 | 176篇 |
1995年 | 151篇 |
1994年 | 119篇 |
1993年 | 71篇 |
1992年 | 86篇 |
1991年 | 98篇 |
1990年 | 89篇 |
1989年 | 70篇 |
1988年 | 64篇 |
1987年 | 67篇 |
1986年 | 43篇 |
1985年 | 41篇 |
1984年 | 13篇 |
1983年 | 8篇 |
1982年 | 9篇 |
1981年 | 4篇 |
1980年 | 2篇 |
1979年 | 5篇 |
1978年 | 1篇 |
1968年 | 1篇 |
1936年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 38 毫秒
1.
2.
Yulong Lian Jing Xiao Chen Zhang Suzhen Guan Fuye Li Hua Ge 《Archives of environmental & occupational health》2016,71(2):74-84
The present study compared the level of occupational strain and work ability among Han, Hui, Uygur, Hui, and Kazakh teachers, and explored ethnic differences based on the associations of psychosocial factors at work, occupational strain, and work ability. A cross-sectional survey was conducted among 2,941 teachers in primary and secondary schools in Xinjiang Province, China. Psychosocial factors, occupational strain, and work ability were measured using the Occupation Stress Inventory—Revised Edition (OSI-R) and Work Ability Index. Han and Hui teachers experienced reduced work ability compared with Uygur and Kazakh teachers, and this finding was caused, in part, by exposure to psychosocial factors at work. The vocational and psychological strains caused by these factors play an important role in reduced work ability among all ethnic teacher groups. The findings indicate the importance of taking action to reduce occupational strain for promoting teachers' work ability in multiethnic workplaces. 相似文献
3.
4.
Platelet function has been described by many laboratory assays, and PL-11 is a new point-of-care platelet function analyzer based on platelet count drop method, which counts platelet before and after the addition of agonists in the citrated whole blood samples. The present study sought to compare PL-11 with other three major more established assays, light transmission aggregometry (LTA), VerifyNow? aspirin system and thromboelastography (TEG), for monitoring the short-term aspirin responses in healthy individuals. Ten healthy young men took 100?mg/d aspirin for 3-day treatment. Platelet function was measured via PL-11, LTA, VerifyNow and TEG, respectively. The blood samples were collected at baseline, 2 hour, 1 day during the aspirin treatment and 1 day, 5?±?1 days, 8?±?1 days after the aspirin withdrawal. Moreover, 90 additional healthy subjects were recruited to establish a reference range for PL-11. Platelet function of healthy subjects decreased significantly 2 hours after 100?mg/d aspirin intake and began to recover during 4–6 days after the aspirin withdrawal. Correlations between methods were PL-11 vs. LTA (r?=?0.614, p?<?0.01); PL-11 vs. VerifyNow (r?=?0.829, p?<?0.01); PL-11 vs. TEG (r?=?0.697, p?<?0.001). There was no significant bias between PL-11 and LTA at baseline (bias?=?1.94%, p?=?0.804) using Bland-Altman analysis, while the data of PL-11 were significantly higher than LTA (bias?=?24.02%, p?<?0.001) during the aspirin therapy. The reference range for PL-11 in healthy young individuals was from 66.8 to 90.5% (95%CI). When aspirin low-responsiveness was defined as LTA?>?20%, the cut-off values for each method were, respectively: PL-11?>?50%, VerifyNow?>?533 ARU, TEG?>?60.2%. The results of different platelet function assays were uninterchangeable for monitoring aspirin response and correlations among them were also varied. Correlations among PL-11 and other three major assays suggested the ability of PL-11 to assess the treatment effects of aspirin. But a large cohort study is needed to confirm the cut-off value of aspirin response detected by PL-11. 相似文献
5.
6.
Yuan Peng Yuman Li Haiyan Cao Liu Hong Yu Wang Mingxing Xie 《Journal of ultrasound in medicine》2019,38(2):539-544
A pulmonary artery (PA) sling is a very rare congenital cardiovascular anomaly, and only a few studies have reported PA slings in fetuses. The relationship of the PA, aorta, ductus arteriosus, and trachea can be evaluated in the 3‐vessel and 3‐vessel and trachea views during fetal echocardiography. A PA sling can be detected by abnormal positioning of the left PA in relation to the trachea when sweeping from the 3‐vessel view cranially to the 3‐vessel and trachea view. Here we report 3 cases of fetal PA slings and their follow‐ups. Two cases were confirmed by postnatal echocardiography, and the other case was confirmed by a cardiovascular cast after pregnancy termination. We emphasize that the 3‐vessel and 3‐vessel and trachea views are of crucial importance in the prenatal diagnosis of a PA sling. 相似文献
8.
苏州科技城医院坐落于苏州高新区太湖之滨,由苏州高新区政府投资新建,是一所集医疗、科研、康复、预防于一体的三级综合性公立医院。医院占地面积140亩,总建筑面积180000m~2,总投资额16亿,设计床位1200张。医院于2013年9月29日奠基,2014年12月28日主体封顶,2016年4月正式投入使用,比预定日期提前了将近1年! 相似文献
9.
10.
本文报道产前超声诊断胎儿右房异构一例。孕妇孕24周产前超声检查发现胎儿左位心合并复杂心血管畸形(右心室双出口、房室间隔缺损、肺动脉发育不良、双侧上腔静脉、心下型完全型肺静脉异位引流)、胃泡位于腹腔右侧、中位肝、可疑无脾、腹主动脉与下腔静脉位于脊柱左侧、双侧支气管呈右侧支气管对称形态,综合考虑右房异构可能。引产后经尸体解剖证实脾脏发育不良、右房异构。右房异构常合并复杂心血管畸形,因此产前超声发现复杂心血管畸形时,应警惕右房异构的可能。右房异构病死率极高,产前诊断具有重要意义。 相似文献