全文获取类型
收费全文 | 8444篇 |
免费 | 433篇 |
国内免费 | 36篇 |
专业分类
耳鼻咽喉 | 61篇 |
儿科学 | 128篇 |
妇产科学 | 112篇 |
基础医学 | 1154篇 |
口腔科学 | 961篇 |
临床医学 | 763篇 |
内科学 | 1722篇 |
皮肤病学 | 163篇 |
神经病学 | 742篇 |
特种医学 | 268篇 |
外科学 | 1217篇 |
综合类 | 26篇 |
一般理论 | 1篇 |
预防医学 | 510篇 |
眼科学 | 205篇 |
药学 | 522篇 |
中国医学 | 56篇 |
肿瘤学 | 302篇 |
出版年
2024年 | 8篇 |
2023年 | 64篇 |
2022年 | 115篇 |
2021年 | 287篇 |
2020年 | 173篇 |
2019年 | 225篇 |
2018年 | 288篇 |
2017年 | 186篇 |
2016年 | 216篇 |
2015年 | 297篇 |
2014年 | 391篇 |
2013年 | 434篇 |
2012年 | 754篇 |
2011年 | 818篇 |
2010年 | 478篇 |
2009年 | 385篇 |
2008年 | 598篇 |
2007年 | 643篇 |
2006年 | 603篇 |
2005年 | 479篇 |
2004年 | 454篇 |
2003年 | 365篇 |
2002年 | 305篇 |
2001年 | 31篇 |
2000年 | 23篇 |
1999年 | 39篇 |
1998年 | 39篇 |
1997年 | 33篇 |
1996年 | 24篇 |
1995年 | 16篇 |
1994年 | 18篇 |
1993年 | 17篇 |
1992年 | 12篇 |
1991年 | 9篇 |
1990年 | 6篇 |
1989年 | 14篇 |
1988年 | 5篇 |
1987年 | 5篇 |
1986年 | 10篇 |
1985年 | 4篇 |
1984年 | 10篇 |
1983年 | 2篇 |
1982年 | 7篇 |
1981年 | 5篇 |
1980年 | 5篇 |
1979年 | 2篇 |
1977年 | 2篇 |
1976年 | 3篇 |
1972年 | 1篇 |
1965年 | 3篇 |
排序方式: 共有8913条查询结果,搜索用时 15 毫秒
91.
de Cerqueira Débora Patrícia Alves Pedreira Ana Luisa Souza de Cerqueira Marcelo Gomes Santiago Mittermayer Barreto 《Clinical rheumatology》2021,40(5):1717-1724
Clinical Rheumatology - Rheumatoid vasculitis (RV) is one of the most severe extra-articular manifestations of rheumatoid arthritis, with significant morbidity and mortality, requiring aggressive... 相似文献
92.
93.
94.
Bruno Felipe Gaia Lucas Rodrigues Pinheiro Otávio Shoite Umetsubo Oseas Santos Jr. Felipe Ferreira Costa Marcelo Gusmão Paraíso Cavalcanti 《The British journal of oral & maxillofacial surgery》2014
Our purpose was to compare the accuracy and reliability of linear measurements for Le Fort I osteotomy using volume rendering software. We studied 11 dried skulls and used cone-beam computed tomography (CT) to generate 3-dimensional images. Linear measurements were based on craniometric anatomical landmarks that were predefined as specifically used for Le Fort I osteotomy, and identified twice each by 2 radiologists, independently, using Dolphin imaging version 11.5.04.35. A third examiner then made physical measurements using digital calipers. There was a significant difference between Dolphin imaging and the gold standard, particularly in the pterygoid process. The largest difference was 1.85 mm (LLpPtg L). The mean differences between the physical and the 3-dimensional linear measurements ranged from −0.01 to 1.12 mm for examiner 1, and 0 to 1.85 mm for examiner 2. Interexaminer analysis ranged from 0.51 to 0.93. Intraexaminer correlation coefficients ranged from 0.81 to 0.96 and 0.57 to 0.92, for examiners 1 and 2, respectively. We conclude that the Dolphin imaging should be used sparingly during Le Fort I osteotomy. 相似文献
95.
96.
97.
98.
99.
Gabriela Roncholeta De Freitas Giovana Aparecida Moura Ferraz Marcelo Gehlen Thelma L. Skare 《Primary Care Diabetes》2021,15(1):184-186
Dry eyes may be caused by impairment in the tear production or excessive tear evaporation and are associated with photophobia, red eyes, vision impairment, local pain and pruritus. It has been described that patients with Diabetes Mellitus (DM) may have a higher prevalence of dry eyes than normal population.This is a case control study of 120 patients with Diabetes Mellitus (DM) and 120 paired controls aiming to compare their prevalence of dry eyes (by the Schirmer test) and its severity (measured by OSDI or Ocular Surface Disease Index) as well as their association with diseases’ clinical variables.We found that 38.3% of DM patients had dry eyes, a prevalence that was higher than controls (p = 0.02). At univariate analysis, they were found to be more common in older individuals (p = 0.001) with type 2 diabetes (p = 0.001) and in those using metformin (p = 0.001). A multivariate linear regression showed that metformin use was the only independent variable associated with dry eyes. When patients with dry eyes with and without DM were compared, no differences in the symptom’s intensity were found. 相似文献
100.
Alice Song Edson Abdala Daniel Waisberg Rodrigo Bronze Martino Ho Yeh Li Luiz Marcelo Sa Malbouisson Ryan Yukimatsu Tanigawa Amaro Duarte Neto Guilherme Marques Andrade Liliana Ducatti Andre Mario Doi João Renato Rebello Pinho Michele Gomes‐Gouvea Fernanda Malta Lecio Figueira Pinto Bruno Fukelmann Guedes Luciana Haddad Venancio Avancini F. Alves Luiz Augusto D. Albuquerque 《The Brazilian journal of infectious diseases》2018