全文获取类型
收费全文 | 1018161篇 |
免费 | 78127篇 |
国内免费 | 2766篇 |
专业分类
耳鼻咽喉 | 13239篇 |
儿科学 | 35157篇 |
妇产科学 | 29138篇 |
基础医学 | 147474篇 |
口腔科学 | 28376篇 |
临床医学 | 92150篇 |
内科学 | 198352篇 |
皮肤病学 | 23393篇 |
神经病学 | 80132篇 |
特种医学 | 39121篇 |
外国民族医学 | 314篇 |
外科学 | 153500篇 |
综合类 | 24390篇 |
现状与发展 | 1篇 |
一般理论 | 406篇 |
预防医学 | 79351篇 |
眼科学 | 23267篇 |
药学 | 73824篇 |
3篇 | |
中国医学 | 2180篇 |
肿瘤学 | 55286篇 |
出版年
2019年 | 8180篇 |
2018年 | 11738篇 |
2017年 | 8941篇 |
2016年 | 10070篇 |
2015年 | 11389篇 |
2014年 | 15428篇 |
2013年 | 23240篇 |
2012年 | 30674篇 |
2011年 | 32542篇 |
2010年 | 19382篇 |
2009年 | 18166篇 |
2008年 | 29866篇 |
2007年 | 31619篇 |
2006年 | 31978篇 |
2005年 | 30521篇 |
2004年 | 29745篇 |
2003年 | 28494篇 |
2002年 | 27464篇 |
2001年 | 47190篇 |
2000年 | 48278篇 |
1999年 | 40510篇 |
1998年 | 11319篇 |
1997年 | 10201篇 |
1996年 | 10251篇 |
1995年 | 9869篇 |
1994年 | 9154篇 |
1993年 | 8526篇 |
1992年 | 32364篇 |
1991年 | 31560篇 |
1990年 | 31105篇 |
1989年 | 29960篇 |
1988年 | 27250篇 |
1987年 | 27407篇 |
1986年 | 25514篇 |
1985年 | 24671篇 |
1984年 | 18452篇 |
1983年 | 15590篇 |
1982年 | 9318篇 |
1981年 | 8417篇 |
1979年 | 16926篇 |
1978年 | 12254篇 |
1977年 | 10355篇 |
1976年 | 9790篇 |
1975年 | 10218篇 |
1974年 | 12349篇 |
1973年 | 11862篇 |
1972年 | 10909篇 |
1971年 | 10132篇 |
1970年 | 9388篇 |
1969年 | 8738篇 |
排序方式: 共有10000条查询结果,搜索用时 78 毫秒
81.
82.
83.
84.
IntroductionInterprofessional learning (IPL) is a vital aspect of training in radiation oncology professions, yet is rarely delivered to those professionals who work most closely together in clinical practice. Scenario-based learning using simulation facilities provides a unique opportunity to facilitate this learning and this project aimed to determine the impact and value of this initiative.MethodsSmall groups comprising post-graduate diploma pre-registration therapeutic radiographers, medical physics trainees and radiation oncology registrars were challenged with 4 plausible and challenging radiotherapy scenarios within an academic simulation centre. Pre- and post-event completion of the “Readiness for Interprofessional Learning Scale” measured impact and a Likert-style survey gathered feedback from participants.ResultsThe session increased participants' teamwork and collaboration skills as well as strengthening professional identities. Participants reported high levels of enjoyment related to collaborative working, communication and observing other professionals deploying their technical skills and specialist knowledge.ConclusionAlthough beneficial, simulated scenarios offering equal opportunities for engagement across the professions are challenging to plan and timetabling issues between the 3 groups present significant difficulties. The safe environment and unique opportunity for these groups to learn together was particularly well received and future oncology-specific simulated scenario sessions are planned with larger cohorts.Implications for practiceSimulated scenario training can be used to improve team working across the radiotherapy interprofessional team and may have wider use in other specialist interdisciplinary team development. 相似文献
85.
Naveen B.S. M.T. Mohan J. Tharayil S.T. Joseph 《International journal of oral and maxillofacial surgery》2021,50(8):1003-1008
A local pedicled vascularized bone flap can prevent the morbidity and cost of free bone flap surgery in small segmental bone defects or long cartilaginous defects of the head and neck. Such flaps can also be useful in patients who are high risk for surgery. The periosteal vascularity of the mandible can be used to design islanded facial artery-based bone flaps, which can be utilized to that extent. Two patients with a small segmental mandibulectomy defect and one patient with a long cricotracheal resection defect underwent reconstruction using three different designs of islanded facial artery osteomyomucosal/osseous flap (iFOMM). The patients had a minimum follow-up period of 18 months. All flaps were successful, with satisfactory healing and without any functional deficit or disease at last follow-up. 相似文献
86.
87.
Altayeb Abdalla Ahmed 《Medicine》2021,100(19)
Estimating stature based on body/limb parts can help define the characteristics of unidentified bodies. The most studied upper limb part is the hand, although few studies have examined whether stature can be estimated using fingers plus other hand dimensions. Moreover, there is paucity in anthropometric studies that determined whether bilateral whole limb parts (e.g., arms, forearms, and hands) are related to stature among the living subjects.This prospective cross-sectional study aimed to evaluate the relationship between different upper limb measurements and the stature of Saudi men. Furthermore, I assessed whether upper limb asymmetry was present, and developed regression models to estimate stature based on different available measurements. Stature and 13 upper limb parameters were measured for 100 right-handed Saudi men who were 18 to 24 years old.All measurements were positively correlated with stature (P < .001), and the best single predictor was the bilateral ulnar length. Asymmetry was more pronounced in the hand measurements. A multiparameter model provided reasonable predictive accuracy (±3.77–5.68 cm) and was more accurate than single-parameter models. Inclusion of the right-side fingers improved the model''s accuracy.This study developed potential models for estimating stature during the identification of bodies of Saudi men. 相似文献
88.
Ragnhild B. Wijma Marloes Emous Merel van den Broek Anke Laskewitz Anneke C. Muller Kobold André P. van Beek 《Surgery for obesity and related diseases》2019,15(1):73-81
Background
Early dumping is a poorly defined and incompletely understood complication after Roux-en-Y gastric (RYGB).Objective
We performed a mixed-meal tolerance test in patients after RYGB to address the prevalence of early dumping and to gain further insight into its pathophysiology.Setting
The study was conducted in a regional hospital in the northern part of the Netherlands.Methods
From a random sample of patients who underwent primary RYGB between 2008 and 2011, 46 patients completed the mixed-meal tolerance test. The dumping severity score for early dumping was assessed every 30 minutes. A sum score at 30 or 60 minutes of ≥5 and an incremental score of ≥3 points were defined as indicating a high suspicion of early dumping. Blood samples were collected at baseline, every 10 minutes during the first half hour, and at 60 minutes after the start.Results
The prevalence of a high suspicion of early dumping was 26%. No differences were seen for absolute hematocrit value, inactive glucagon-like peptide-1, and vasoactive intestinal peptide between patients with or without early dumping. Patients at high suspicion of early dumping had higher levels of active glucagon-like peptide-1 and peptide YY.Conclusion
The prevalence of complaints at high suspicion of early dumping in a random population of patients after RYGB is 26% in response to a mixed-meal tolerance test. Postprandial increases in both glucagon-like peptide-1 and peptide YY are associated with symptoms of early dumping, suggesting gut L-cell overactivity in this syndrome. 相似文献89.
90.
Stephan Koter Tina U. Cohnert Korbinian B. Hindermayr Jörg Lindenmann Maximilian Brückner Wolfgang K. Oswald Georg Werkgartner Doris Wagner 《Journal of vascular surgery》2019,69(4):1227-1232