全文获取类型
收费全文 | 4196篇 |
免费 | 314篇 |
国内免费 | 18篇 |
专业分类
耳鼻咽喉 | 76篇 |
儿科学 | 384篇 |
妇产科学 | 98篇 |
基础医学 | 416篇 |
口腔科学 | 59篇 |
临床医学 | 264篇 |
内科学 | 908篇 |
皮肤病学 | 146篇 |
神经病学 | 562篇 |
特种医学 | 197篇 |
外科学 | 397篇 |
综合类 | 123篇 |
现状与发展 | 1篇 |
预防医学 | 180篇 |
眼科学 | 73篇 |
药学 | 195篇 |
中国医学 | 9篇 |
肿瘤学 | 440篇 |
出版年
2023年 | 57篇 |
2022年 | 54篇 |
2021年 | 105篇 |
2020年 | 72篇 |
2019年 | 93篇 |
2018年 | 119篇 |
2017年 | 94篇 |
2016年 | 118篇 |
2015年 | 79篇 |
2014年 | 152篇 |
2013年 | 171篇 |
2012年 | 225篇 |
2011年 | 207篇 |
2010年 | 137篇 |
2009年 | 130篇 |
2008年 | 195篇 |
2007年 | 175篇 |
2006年 | 159篇 |
2005年 | 179篇 |
2004年 | 166篇 |
2003年 | 124篇 |
2002年 | 115篇 |
2001年 | 78篇 |
2000年 | 120篇 |
1999年 | 98篇 |
1998年 | 57篇 |
1997年 | 34篇 |
1996年 | 32篇 |
1995年 | 36篇 |
1994年 | 40篇 |
1993年 | 27篇 |
1992年 | 75篇 |
1991年 | 50篇 |
1990年 | 56篇 |
1989年 | 97篇 |
1988年 | 71篇 |
1987年 | 77篇 |
1986年 | 67篇 |
1985年 | 67篇 |
1984年 | 75篇 |
1983年 | 53篇 |
1981年 | 20篇 |
1979年 | 29篇 |
1978年 | 23篇 |
1977年 | 25篇 |
1975年 | 25篇 |
1974年 | 23篇 |
1972年 | 25篇 |
1970年 | 22篇 |
1969年 | 26篇 |
排序方式: 共有4528条查询结果,搜索用时 31 毫秒
161.
Mark Christopher Snoddy Maximilian Frank Lang Thomas J. An Phillip Michael Mitchell William Jeffrey Grantham Benjamin Scoot Hooe Harrison Ford Kay Ritwik Bhatia Rachel V. Thakore Jason Michael Evans William Todd Obremskey Manish Kumar Sethi 《International orthopaedics》2014,38(8):1711-1716
Purpose
We evaluated factors influencing re-operation in tension band and plating of isolated olecranon fractures.Methods
Four hundred eighty-nine patients with isolated olecranon fractures who underwent tension band (TB) or open reduction internal fixation (ORIF) from 2003 to 2013 were identified at an urban level 1 trauma centre. Medical records were reviewed for patient information and complications, including infection, nonunion, malunion, loss of function or hardware complication requiring an unplanned surgical intervention. Electronic radiographs of these patients were reviewed to identify Orthopaedic Trauma Association (OTA) fracture classification and patients who underwent TB or ORIF.Results
One hundred seventy-seven patients met inclusion criteria of isolated olecranon fractures. TB was used for fixation in 43 patients and ORIF in 134. No statistical significance was found when comparing complication rates in open versus closed olecranon fractures. In a multivariate analysis, the key factor in outcome was method of fixation. Overall, there were higher rates of infection and hardware removal in the TB compared with the ORIF group.Conclusions
Our results demonstrate that the dominant factor driving re-operation in isolated olecranon fractures is type of fixation. When controlling for all variables, there is an increased chance of re-operation in patients with TB fixation. 相似文献162.
163.
Christos Ganos MD Panagiotis Kassavetis MD Roberto Erro MD Mark J. Edwards MD John Rothwell PhD Kailash P. Bhatia MD FRCP 《Movement disorders》2014,29(4):437-443
The putative involvement of the cerebellum in the pathogenesis of cortical myoclonic syndromes has been long hypothesized, as neuropathological changes in patients with cortical myoclonus have most commonly been found in the cerebellum rather than in the suspected culprit, the primary somatosensory cortex. A model of increased cortical excitability due to loss of cerebellar inhibitory control via cerebello‐thalamo‐cortical connections has been proposed, but evidence remains equivocal. Here, we explore this hypothesis by examining syndromes that present with cortical myoclonus and ataxia. We first describe common clinical characteristics and underlying neuropathology. We critically view information on cerebellar physiology with regard to motorcortical output and compare findings between hypothesized and reported neurophysiological changes in conditions with cortical myoclonus and ataxia. We synthesize knowledge and focus on neurochemical changes in these conditions. Finally, we propose that the combination of alterations in inhibitory neurotransmission and the presence of cerebellar pathology are important elements in the pathogenesis of cortical myoclonus. © 2014 Movement Disorder Society 相似文献
164.
Miao Huang RN MSN Ruiqi Yang RN MSN Chuanlai Zhang RN BD Xiuni Gan RN MSN 《Nursing in critical care》2023,28(6):931-939
Background
Hyperglycaemia is common in critically ill adult patients. Many studies have identified the content, methods, and effects of glycaemic control but have not explored the effects of knowledge, attitudes, and practices (KAP) on glycaemic control in critically ill adults. Various factors also influence the KAP of intensive care unit (ICU) staff.Aims
To assess KAP regarding glucose management for critically ill adults among nurses and medical professionals and identify the factors that influence their KAP in ICUs.Methods
A multicentre cross-sectional survey.Results
In total, 403/459 (response rate: 87.8%) participants from ICUs in nine tertiary hospitals in China participated in this study, 82.4% of whom were female and 93.4% of whom were nurses. The mean work experience was 8.88 years, and the mean critical care experience was 6.59 years. The scoring rate for the three dimensions of knowledge, attitudes, and practices were 82.35%, 87.69%, and 76%, respectively. We did not find any other factors affecting the KAP scores except for the level of knowledge awareness (p < 0.001), awareness of the importance (p < 0.001), and training for glucose control (p = 0.004).Conclusion
ICU staff KAP regarding glycaemic control in critically ill adults among ICU professionals were acceptable in China. However, ICU professionals' current knowledge regarding nutrition, glucose variability, and skills related to glucose management could be improved.Relevance to Clinical Practice
ICU educators should provide more skills-related training for healthcare professionals in the glycaemic management of critically ill adults. Moreover, the process of managing blood glucose in adult ICU patients is a collaborative, multidisciplinary team effort, with monitoring and feedback required during implementation. 相似文献165.
166.
Sandeep Basavarajaiah MD MRCP FESC Sampath Athukorala MD MRCP Konstantinos Kalogeras MD MRCP Vasileios Panoulas MD MRCP Bhagya H. Loku Waduge MBBS Gurbir Bhatia MD MRCP Richard Watkin MD MRCP FESC George Pulikal MD MRCP Kaeng Lee MD MRCP Jerome Ment MD MRCP Bethan Freestone MD MRCP Michael Pitt MD MRCP 《Catheterization and cardiovascular interventions》2021,98(1):57-65
167.
Amir Aziz MRCP PhD Gurbir Bhatia MD MRCP Michael Pitt MD MRCP Anirban Choudhury MD MRCP Ahmed Hailan MD FRCP Subramanya Upadhyaya MD MRCP Leong Lee MD MRCP Luca Testa MD Matteo Casenghi MD Alfonso Ielasi MD Bernardo Cortese MD Hannah Rides MSc Sandeep Basavarajaiah MD MRCP FESC 《Catheterization and cardiovascular interventions》2021,98(2):225-235
168.
Gagandeep Kaur Walia Simmi Saini Pradeep Vimal Khushboo Bhatia Arun Kumar Ranjana Singh Dorairaj Prabhakaran Vipin Gupta 《Diabetes & Metabolic Syndrome: Clinical Research & Reviews》2021,15(3):661-665
Background and aimsThe association of melanocortin receptor 4 (MC4R) gene with adiposity measures is widely studied in European populations. Only six studies have investigated the role of MC4R gene with adiposity measures among Indian populations. We have evaluated the role of MC4R (rs17782313) gene polymorphism in influencing adiposity measures in India among children and adults.Materials and methodsThe present population based cross sectional study was conducted among 303 individuals (208 children and 95 adults) of age group 10–30 years, belonging to Rajasthan. Somatometric measurements (standing height, weight, and waist and hip girths) and blood samples were taken after obtaining written informed consent. Genotyping of MC4R rs17782313 single nucleotide polymorphism was done using restriction fragment length polymorphism method for polymerase chain reaction ampli?ed fragments. We examined association between rs17782313 and different adiposity measures (height, weight, BMI, WHR, and waist and hip girths) using linear regression models.ResultsThe MC4R variant (rs17782313) predicted increased body weight (0.15 kg, S.E ± 0.076, P = 0.043) among children. In combined population, the rs17782313 variant was moderately associated with body weight (0.13 kg, S.E ± 0.070, P = 0.057). This variant was not found to be associated with any other adiposity measure.ConclusionFurther studies are needed to evaluate the association of MC4R variants through sequencing and functional genomics with different adiposity measures in Indian populations for understanding the genetic underpinnings of adiposity in India. 相似文献
169.
170.
Hua Zhang PhD Shaodong Qiu BD Fei Chen PhD Zhimin Zhu MD 《Journal of clinical ultrasound : JCU》2019,47(7):412-418
Because of better awareness and understanding of its pathophysiology, the cardiorenal syndrome (CRS) is more often diagnosed and better managed. The echocardiographic evaluation of CRS now benefits from three-dimensional speckle tracking echocardiography (3D-STE), which allows multidimensional and real-time evaluation of regional myocardial and overall cardiac function, and helps assessing the degree of myocardial damage. This article describes the application of 3D-STE in evaluating the myocardial motion in patients with CRS. 相似文献