全文获取类型
收费全文 | 12954篇 |
免费 | 859篇 |
国内免费 | 196篇 |
专业分类
耳鼻咽喉 | 30篇 |
儿科学 | 140篇 |
妇产科学 | 41篇 |
基础医学 | 1011篇 |
口腔科学 | 2287篇 |
临床医学 | 1322篇 |
内科学 | 1768篇 |
皮肤病学 | 76篇 |
神经病学 | 506篇 |
特种医学 | 690篇 |
外科学 | 2904篇 |
综合类 | 987篇 |
预防医学 | 1252篇 |
眼科学 | 31篇 |
药学 | 542篇 |
5篇 | |
中国医学 | 361篇 |
肿瘤学 | 56篇 |
出版年
2024年 | 33篇 |
2023年 | 262篇 |
2022年 | 872篇 |
2021年 | 981篇 |
2020年 | 606篇 |
2019年 | 530篇 |
2018年 | 546篇 |
2017年 | 450篇 |
2016年 | 403篇 |
2015年 | 501篇 |
2014年 | 921篇 |
2013年 | 1027篇 |
2012年 | 747篇 |
2011年 | 883篇 |
2010年 | 627篇 |
2009年 | 587篇 |
2008年 | 549篇 |
2007年 | 455篇 |
2006年 | 385篇 |
2005年 | 310篇 |
2004年 | 273篇 |
2003年 | 267篇 |
2002年 | 206篇 |
2001年 | 210篇 |
2000年 | 160篇 |
1999年 | 154篇 |
1998年 | 109篇 |
1997年 | 90篇 |
1996年 | 94篇 |
1995年 | 89篇 |
1994年 | 79篇 |
1993年 | 49篇 |
1992年 | 59篇 |
1991年 | 40篇 |
1990年 | 40篇 |
1989年 | 37篇 |
1988年 | 34篇 |
1987年 | 29篇 |
1986年 | 22篇 |
1985年 | 48篇 |
1984年 | 57篇 |
1983年 | 21篇 |
1982年 | 30篇 |
1981年 | 28篇 |
1980年 | 24篇 |
1979年 | 18篇 |
1978年 | 21篇 |
1977年 | 16篇 |
1976年 | 13篇 |
1969年 | 3篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
5.
6.
《Osteoarthritis and cartilage / OARS, Osteoarthritis Research Society》2020,28(11):1412-1426
7.
The study aimed to assess the effect of exogenous factors such as surgeon posture, surgical instrument length, fatigue after a night shift, exercise and caffeine consumption on the spatial accuracy of neurosurgical manipulations. For the evaluation and simulation of neurosurgical manipulations, a testing device developed by the authors was used. The experimental results were compared using nonparametric analysis (Wilcoxon test) and multivariate analysis, which was performed using mixed models. The results were considered statistically significant at p < 0.05. The study included 11 first-year neurosurgery residents who met the inclusion criteria. Hand support in the sitting position (Wilcoxon test p value = 0.0033), caffeine consumption (p = 0.0058) and the length of the microsurgical instrument (p = 0.0032) had statistically significant influences on the spatial accuracy of surgical manipulations (univariate analysis). The spatial accuracy did not significantly depend on the type of standing position (Wilcoxon test p value = 0.2860), whether the surgeon was standing/sitting (p = 0.1029), fatigue following a night shift (p = 0.3281), or physical exertion prior to surgery (p = 0.2845).When conducting the multivariate analysis, the spatial accuracy significantly depended on the test subject (p < 0.0001), the use of support during the test (p = 0.0001), and the length of the microsurgical instrument (p = 0.0397). To increase the spatial accuracy of microsurgical manipulations, hand support and shorter tools should be used. Caffeine consumption in high doses should also be avoided prior to surgery. 相似文献
8.
9.
M.A. Mashrah T.A. Aldhohrah A. Abdelrehem Moustafa H.M. Al-Sharani A. Alrmali L. Wang 《International journal of oral and maxillofacial surgery》2021,50(1):21-31
Donor site morbidity following radial forearm flap (RFF) harvest remains a controversial issue. The aim of this meta-analysis was to answer the question “Are the range of wrist movements (range of motion, ROM) and hand strength affected after RFF harvesting?” The PubMed, Embase, Scopus, and Cochrane Library electronic databases were systematically searched (to December 2019). Self-controlled studies evaluating hand biomechanics after RFF harvest were included. Weighted mean differences with 95% confidence intervals were calculated using the random-effects model. The outcome variables were ROM, forearm movements, grip, and pinch strengths. Thirteen studies involving a total of 335 patients were included. With the exception of grip strength and supination, which showed statistically significant reductions of about 2.40 kg and 2.86° (P < 0.05), all other ROM, forearm movements, and pinch strengths showed an insignificant difference when the operated hand was compared to the non-operated hand (P > 0.05). Regression analysis showed that the method of donor site closure and size of the donor site defect had an insignificant impact on hand biomechanics. This study confirms the lack of discernible biomechanical morbidity after RFF transfer. The minimal reduction in hand biomechanics after RFF is considered to be clinically negligible. 相似文献
10.