全文获取类型
收费全文 | 11633篇 |
免费 | 716篇 |
国内免费 | 66篇 |
专业分类
耳鼻咽喉 | 111篇 |
儿科学 | 325篇 |
妇产科学 | 219篇 |
基础医学 | 1250篇 |
口腔科学 | 531篇 |
临床医学 | 978篇 |
内科学 | 2619篇 |
皮肤病学 | 217篇 |
神经病学 | 687篇 |
特种医学 | 340篇 |
外国民族医学 | 4篇 |
外科学 | 1787篇 |
综合类 | 520篇 |
一般理论 | 10篇 |
预防医学 | 747篇 |
眼科学 | 312篇 |
药学 | 1004篇 |
中国医学 | 68篇 |
肿瘤学 | 686篇 |
出版年
2023年 | 151篇 |
2022年 | 458篇 |
2021年 | 793篇 |
2020年 | 406篇 |
2019年 | 483篇 |
2018年 | 605篇 |
2017年 | 336篇 |
2016年 | 385篇 |
2015年 | 392篇 |
2014年 | 518篇 |
2013年 | 642篇 |
2012年 | 918篇 |
2011年 | 912篇 |
2010年 | 456篇 |
2009年 | 392篇 |
2008年 | 593篇 |
2007年 | 600篇 |
2006年 | 535篇 |
2005年 | 527篇 |
2004年 | 532篇 |
2003年 | 412篇 |
2002年 | 424篇 |
2001年 | 81篇 |
2000年 | 68篇 |
1999年 | 62篇 |
1998年 | 85篇 |
1997年 | 49篇 |
1996年 | 44篇 |
1995年 | 57篇 |
1994年 | 38篇 |
1993年 | 25篇 |
1992年 | 20篇 |
1991年 | 36篇 |
1990年 | 32篇 |
1989年 | 33篇 |
1988年 | 23篇 |
1987年 | 24篇 |
1986年 | 35篇 |
1985年 | 20篇 |
1984年 | 22篇 |
1983年 | 21篇 |
1982年 | 13篇 |
1981年 | 22篇 |
1980年 | 17篇 |
1979年 | 14篇 |
1978年 | 10篇 |
1977年 | 10篇 |
1975年 | 9篇 |
1974年 | 10篇 |
1970年 | 9篇 |
排序方式: 共有10000条查询结果,搜索用时 109 毫秒
131.
Eva Compérat Stéphane Larré Morgan Roupret Yann Neuzillet Géraldine Pignot Hervé Quintens Nadine Houéde Catherine Roy Xavier Durand Justine Varinot Dimitri Vordos Mathieu Rouanne Mohammed Adnan Bakhri Priscilla Bertrand Stephane Calin Jeglinschi Olivier Cussenot Michel Soulié Christian Pfister 《Virchows Archiv : an international journal of pathology》2015,466(5):589-594
132.
Maged M. Yassin Abed El-Raoof D. Masoud Mohammed M. Yasin 《Diabetes & Metabolic Syndrome: Clinical Research & Reviews》2019,13(3):1865-1870
ObjectiveTo assess serum vitamin D status and its relations to other biochemical parameters in type 2 diabetic patients from Gaza Strip.Materials and methodsThis case-control study included 58 type 2 diabetic patients as well as 58 non-diabetic controls. Patients and controls were matched for age and gender. Data were obtained from questionnaire interview, and biochemical analysis of blood samples.ResultsSerum vitamin D was significantly lower in diabetic patients compared to non-diabetic controls (25.9 ± 11.0 versus 34.6 ± 13.8 ng/dl, % difference = 28.8%, P < 0.001). The number of patients having vitamin D deficient, insufficient and sufficient were 6 (10.4%), 35 (60.3%) and 17 (29.3%) compared to controls of 3 (5.2%), 16 (27.6%) and 39 (67.2%), respectively (χ2 = 14.672, P < 0.001). Serum glucose, glycated hemoglobin (HbA1c), serum alanine aminotransferase (ALT), aspartate aminotransferase (AST) and triglycerides were significantly higher in patients than in controls whereas serum insulin, high density lipoprotein cholesterol (HDL-C) and calcium were significantly lower in patients. Serum vitamin D showed significant negative correlations with HbA1c (r = ? 0.186, P = 0.046), ALT (r = ? 192, P = 0.040) and AST (r = ? 0.188, P = 0.044) whereas significant positive correlations were found with HDL-C (r = 0.188, P = 0.044) and calcium (r = 0.239, P = 0.010).ConclusionThe significant negative and positive correlations of vitamin D with HbA1c and calcium, respectively suggests that vitamin D supplementation would be of potential therapeutic value in clinical settings for controlling of type 2 diabetes and more importantly its complications. However, a well-designed clinical trials are needed to define the contribution of vitamin D status and therapy in the global diabetes problem. 相似文献
133.
134.
135.
Rakan S. Al-Essa Mohammed D. Al-Otaibi Bader S. Al-Qahtani Emad M. Masuadi Aamir Omair Hind M. Alkatan 《Saudi Journal of Ophthalmology》2019,33(1):1-6
Purpose
The main purpose of the study was to examine and identify factors that influence the future practice pattern of Saudi Board of Ophthalmology residents as well as their academic goals. This study also aimed to compare the plans and career goals of the current Saudi ophthalmology residents with a former cohort of Saudi ophthalmology residents.Methods
All current residents of Saudi Board of Ophthalmology were invited to complete an anonymous online survey in March 2017. Residents were contacted by email. The survey contained questions on demographics, plans and factors influencing career choice of the residents in their future. Data were categorized by gender. Chi-square was used to assess the effect of gender on outcomes where appropriate.Results
Of 150 residents surveyed, 91 (61%) responded to the survey. Having the ability to combine medicine and surgery was the most motivating factor for pursuing an ophthalmology residency training program (81% of respondents). Most residents expressed an interest in providing refractive surgery (62%), being involved in research activities (85%) and working part-time in the private sector (73%). The majority (81%) expressed a desire to practice in an urban setting as well as pursuing fellowship training (81%). Anterior segment (31%) and surgical retina (15%) were the most popular choices for fellowship training.Conclusion
Increasing interest in joining fellowship training programs (mostly in surgical subspecialties) and being involved in research activities among current generation of ophthalmology residents have been observed compared to a previous cohort study in the same country. 相似文献136.
137.
Estimation of copper in saliva and areca nut products and its correlation with histological grades of oral submucous fibrosis 下载免费PDF全文
138.
139.
140.