全文获取类型
收费全文 | 61376篇 |
免费 | 3021篇 |
国内免费 | 272篇 |
专业分类
耳鼻咽喉 | 833篇 |
儿科学 | 1686篇 |
妇产科学 | 1484篇 |
基础医学 | 8137篇 |
口腔科学 | 1542篇 |
临床医学 | 4526篇 |
内科学 | 15353篇 |
皮肤病学 | 1330篇 |
神经病学 | 5416篇 |
特种医学 | 2092篇 |
外国民族医学 | 6篇 |
外科学 | 7587篇 |
综合类 | 341篇 |
一般理论 | 17篇 |
预防医学 | 5899篇 |
眼科学 | 1032篇 |
药学 | 4051篇 |
中国医学 | 187篇 |
肿瘤学 | 3150篇 |
出版年
2023年 | 343篇 |
2022年 | 277篇 |
2021年 | 1639篇 |
2020年 | 944篇 |
2019年 | 1514篇 |
2018年 | 3280篇 |
2017年 | 1981篇 |
2016年 | 1363篇 |
2015年 | 1374篇 |
2014年 | 2007篇 |
2013年 | 2718篇 |
2012年 | 3972篇 |
2011年 | 4111篇 |
2010年 | 2366篇 |
2009年 | 2107篇 |
2008年 | 3438篇 |
2007年 | 3486篇 |
2006年 | 3302篇 |
2005年 | 3333篇 |
2004年 | 3075篇 |
2003年 | 2903篇 |
2002年 | 2737篇 |
2001年 | 1445篇 |
2000年 | 1531篇 |
1999年 | 1239篇 |
1998年 | 447篇 |
1997年 | 295篇 |
1996年 | 295篇 |
1995年 | 281篇 |
1994年 | 247篇 |
1993年 | 235篇 |
1992年 | 608篇 |
1991年 | 489篇 |
1990年 | 488篇 |
1989年 | 423篇 |
1988年 | 373篇 |
1987年 | 398篇 |
1986年 | 343篇 |
1985年 | 305篇 |
1984年 | 219篇 |
1983年 | 184篇 |
1979年 | 170篇 |
1978年 | 151篇 |
1977年 | 126篇 |
1976年 | 123篇 |
1975年 | 137篇 |
1974年 | 134篇 |
1973年 | 144篇 |
1972年 | 142篇 |
1971年 | 130篇 |
排序方式: 共有10000条查询结果,搜索用时 199 毫秒
1.
de Souza Gabriel Hernandez Machado Pandolfo Mariana Travi Bortoluzzi Eduardo Antunes da Silveira Teixeira Cleonice Rossetto Hebert Luís da Rosa Amanda Freitas Machado Renata Gondo da Fonseca Roberti Garcia Lucas 《Odontology / the Society of the Nippon Dental University》2022,110(3):535-544
Odontology - The purpose of this study was to investigate whether the root perforation repair with mineral aggregate-based cements affects the retention of customized fiberglass posts to bovine... 相似文献
2.
3.
José-Luis Andréu María Auxiliadora Martín Héctor Corominas José Javier Pérez-Venegas José Andrés Román-Ivorra Fernando Sánchez-Alonso Ángel Gil de Miguel 《Reumatología clinica》2021,17(4):212-214
IntroductionThe current paradigm of the management of rheumatoid arthritis (RA) recommends achieving a state of remission or low disease activity through the treat-to-target strategy. Our study assesses adherence to this strategy.MethodPatients with RA (ACR-EULAR 2010 criteria) were included. From each centre, 19 patients were randomly selected. Clinical histories (CH) were assessed by independent auditors, checking compliance with predefined quality criteria. The study was approved by ethics committees.ResultsWe included 856 patients (mean age 54 years; 71% women). The use of a combined index (CI) was recorded in 61% of cases. Visits were recorded every 4 weeks using a CI in 4% of CH while attempts were made to achieve remission. Monitoring of disease activity every 6–8 months after reaching the target was recorded in 73% of cases.ConclusionsThe implementation of the treat-to-target strategy is barely recorded in patients with RA in routine clinical practice. 相似文献
4.
J. Ripollés-Melchor C. Aldecoa E. Alday-Muñoz S. del Río A. Batalla E. del-Cojo-Peces R. Uña-Orejón J.L. Muñoz-Rodés J.V. Lorente Á.V. Espinosa C. Ferrando-Ortolà J.L. Jover A. Abad-Gurumeta J.M. Ramírez-Rodríguez A. Abad-Motos 《Revista espa?ola de anestesiología y reanimación》2021,68(7):373-383
BackgroundThe optimal regimen for intravenous administration of intraoperative fluids remains unclear. Our goal was to analyze intraoperative crystalloid volume administration practices and their association with postoperative outcomes.MethodsWe extracted clinical data from two multicenter observational studies including adult patients undergoing colorectal surgery and total hip (THA) and knee arthroplasty (TKA). We analyzed the distribution of intraoperative fluid administration. Regression was performed using a general linear model to determine factors predictive of fluid administration. Patient outcomes and intraoperative crystalloid utilization were summarized for each surgical cohort. Regression models were developed to evaluate associations of high or low intraoperative crystalloid with the likelihood of increased postoperative complications, mainly acute kidney injury (AKI) and hospital length of stay (LOS).Results7,580 patients were included. The average adjusted intraoperative crystalloid infusion rate across all surgeries was to 7.9 (SD 4) mL/kg/h. The regression model strongly favored the type of surgery over other patient predictors. We found that high fluid volume was associated with 40% greater odds ratio (OR 1.40; 95% confidence interval1.01-1.95, p = 0.044) of postoperative complications in patients undergoing THA, while we found no associations for the other types of surgeries, AKI and LOSConclusionsA wide variability was observed in intraoperative crystalloid volume administration; however, this did not affect postoperative outcomes. 相似文献
5.
Rizzo Manglio Miguel Bluthgen Mara Virginia Recondo Gonzalo Naveira Martin Perfetti Aldo Rizzi Florencia Kuzminin Alejandro Faura Victoria Cerini Matas Videla Alejandro Silva Carlos Lupinacci Lorena Minatta Nicols 《International journal of clinical oncology / Japan Society of Clinical Oncology》2021,26(6):1057-1064
International Journal of Clinical Oncology - Immune-checkpoint inhibitors (ICIs) are standard treatments for metastatic non-small cell lung cancer (NSCLC). Patients with poor performance status... 相似文献
6.
结核病与糖尿病均是临床上的常见病和多发病,两者可合并存在,相互影响。活动性结核病作为感染因素可加重糖尿病病情,而糖尿病患者又是发生结核病的高危人群,结核病与糖尿病双重负担将成为重大的全球公共卫生问题。因此,需重视结核病与糖尿病共病的治疗管理。本共识重点介绍了结核病与糖尿病共病的危害、发病机制、双向筛查、临床特点、诊断、治疗和管理等内容。 相似文献
7.
R. García-Ramos D. Santos-García A. Alonso-Cánovas M. Álvarez-Sauco B. Ares A. Ávila N. Caballol F. Carrillo F. Escamilla Sevilla E. Freire J.C. Gómez Esteban I. Legarda L. López Manzanares E. López Valdés I. Martínez-Torres M. Mata I. Pareés B. Pascual-Sedano J.C. Martínez Castrillo 《Neurología (Barcelona, Spain)》2021,36(2):149-158
IntroductionThe main challenge of Parkinson's disease in women of childbearing age is managing symptoms and drugs during pregnancy and breastfeeding. The increase in the age at which women are having children makes it likely that these pregnancies will become more common in future.ObjectivesThis study aims to define the clinical characteristics of women of childbearing age with Parkinson's disease and the factors affecting their lives, and to establish a series of guidelines for managing pregnancy in these patients.ResultsThis consensus document was developed through an exhaustive literature search and a discussion of the available evidence by a group of movement disorder experts from the Spanish Society of Neurology.ConclusionsParkinson's disease affects all aspects of sexual and reproductive health in women of childbearing age. Pregnancy should be well planned to minimise teratogenic risk. A multidisciplinary approach should be adopted in the management of these patients in order to take all relevant considerations into account. 相似文献
8.
9.
10.