全文获取类型
收费全文 | 15860篇 |
免费 | 1051篇 |
国内免费 | 60篇 |
专业分类
耳鼻咽喉 | 240篇 |
儿科学 | 532篇 |
妇产科学 | 312篇 |
基础医学 | 2024篇 |
口腔科学 | 280篇 |
临床医学 | 1674篇 |
内科学 | 3505篇 |
皮肤病学 | 208篇 |
神经病学 | 1647篇 |
特种医学 | 541篇 |
外科学 | 1924篇 |
综合类 | 112篇 |
一般理论 | 13篇 |
预防医学 | 1608篇 |
眼科学 | 405篇 |
药学 | 912篇 |
中国医学 | 23篇 |
肿瘤学 | 1011篇 |
出版年
2024年 | 20篇 |
2023年 | 149篇 |
2022年 | 372篇 |
2021年 | 655篇 |
2020年 | 393篇 |
2019年 | 502篇 |
2018年 | 623篇 |
2017年 | 459篇 |
2016年 | 445篇 |
2015年 | 536篇 |
2014年 | 697篇 |
2013年 | 890篇 |
2012年 | 1317篇 |
2011年 | 1365篇 |
2010年 | 727篇 |
2009年 | 632篇 |
2008年 | 1056篇 |
2007年 | 982篇 |
2006年 | 871篇 |
2005年 | 954篇 |
2004年 | 840篇 |
2003年 | 690篇 |
2002年 | 604篇 |
2001年 | 116篇 |
2000年 | 96篇 |
1999年 | 94篇 |
1998年 | 90篇 |
1997年 | 98篇 |
1996年 | 59篇 |
1995年 | 52篇 |
1994年 | 39篇 |
1993年 | 25篇 |
1992年 | 36篇 |
1991年 | 39篇 |
1990年 | 29篇 |
1989年 | 30篇 |
1988年 | 36篇 |
1987年 | 24篇 |
1986年 | 36篇 |
1985年 | 31篇 |
1984年 | 23篇 |
1983年 | 31篇 |
1982年 | 24篇 |
1981年 | 23篇 |
1980年 | 14篇 |
1979年 | 17篇 |
1977年 | 11篇 |
1976年 | 11篇 |
1975年 | 11篇 |
1970年 | 13篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
Hommes Franziska Mohsenpour Amir Kropff Dana Pilgram Lisa Matusall Svenja von Philipsborn Peter Sell Kerstin 《Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz》2022,65(1):96-106
Bundesgesundheitsblatt - Gesundheitsforschung - Gesundheitsschutz - Akteure der öffentlichen Gesundheit (Public Health) tragen wesentlich zu Gesundheitsschutz, -förderung und... 相似文献
2.
3.
Ruiz-Úcar Elena Acín-Gándara Débora Medina-García Manuel Ronda Diego Cruzado Pereira-Pérez Fernando 《Obesity surgery》2022,32(2):569-570
Obesity Surgery - Laparoscopic sleeve gastrectomy (LSG) is increasingly playing a key role in obesity management. Such operations, however, carry complications sometimes including leaks. The... 相似文献
4.
Dana Franzen-Klein Mark Jankowski Charlotte L. Roy Hoa Nguyen-Phuc Da Chen Lorin Neuman-Lee 《Journal of toxicology and environmental health. Part A》2020,83(2):45-65
ABSTRACTDomestic chickens (Gallus gallus domesticus) were exposed to imidacloprid by gavage once daily for 7 consecutive days at 0, 0.03, 0.34, 3.42, 10.25, and 15.5 mg/kg/day (n = 20 per group; 5 6-week-old males, 5 6-week-old females, 5 9-week-old males, and 5 9-week-old females). The severity and duration of neurobehavioral abnormalities were recorded. Components of the innate and adaptive immune system were assessed with 7 standard functional assays. Temporary neurobehavioral abnormalities were observed in a dose-dependent manner, including muscle tremors, ataxia, and depressed mentation. Based upon mean clinical severity scores, the no observed adverse effect level (NOAEL) was 3.42 mg/kg/day, and the lowest observed adverse effect level (LOAEL) was 10.25 mg/kg/day. The effective dose value for the presence of any neurobehavioral abnormalities in 50% of the test group (ED50) was 4.62 ± 0.98 mg/kg/day. The ED50 for an adjusted score that included both severity and duration of neurobehavioral abnormalities was 11.24 ± 9.33 mg/kg/day. These ED50 values are equivalent to a 1 kg bird ingesting 29 or 70 imidacloprid treated soybean seeds respectively. Immunotoxicity was not documented, possible causes include the assays were insensitive, relevant immune functions were not examined, or imidacloprid is not immunotoxic at this dosing schedule in this species. Neurobehavioral abnormalities were a more sensitive indicator of the sublethal effects of imidacloprid than immunotoxicity. 相似文献
5.
6.
Martín-Nares Eduardo Zuñiga-Tamayo Diego Hinojosa-Azaola Andrea 《Clinical rheumatology》2019,38(1):97-106
Clinical Rheumatology - We aimed to estimate the frequency of overlap of antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) with systemic autoimmune diseases. Retrospective... 相似文献
7.
8.
Diego Dias da Silva Ana Helena da Rosa Paz Ciro Paz Portinho Elizabeth Obino Cirne Lima Lúcia Maria Kliemann Marcus Vinicius Martins Collares 《Acta cirúrgica brasileira / Sociedade Brasileira para Desenvolvimento Pesquisa em Cirurgia》2020,35(12)
Purpose:This study assessed the regeneration potential of mesenchymal stem cells (MSC) from adipose tissue associated with platelet-rich plasma (PRP) in bone regeneration.Methods:Thirty Wistar rats (Rattus norvegicus albinos) were divided into five groups (according to the grafting material and time to euthanasia): (1) autograft - 14 days (control), (2) autograft - 28 days (control), (3) MSC + PRP - 14 days, (4) MSC + PRP + papaverine - 14 days and (5) MSC + PRP + papaverine - 28 days. After euthanasia, the graft was removed and histological slides were prepared. They were assessed by a blinded pathologist using a previously published histological scale as parameter.Results:There was some degree of neoformed bone trabeculae (NBT) in 93.3% of the samples, as well as osteoblastic activity (OA). The autograft groups (14 and 28 days) had higher levels in the formation of bone trabeculae. Nonparametric data were analyzed using the Wilcoxon-Mann-Whitney test and proved not to be statistically significant at p < 0.05.Conclusions:Experimental parietal bone reconstruction, combining MSC, PRP and papaverine presented regeneration in all groups with no significant difference among them.Key words: Bone Regeneration, Platelet-Rich Plasma, Tissue Engineering, Rats 相似文献
9.
José A. Lorente Pablo Cardinal-Fernández Diego Muñoz Fernando Frutos-Vivar Arnaud W. Thille Carlos Jaramillo Aida Ballén-Barragán José M. Rodríguez Oscar Peñuelas Guillermo Ortiz José Blanco Bruno Valle Pinheiro Nicolás Nin María del Carmen Marin Andrés Esteban Taylor B. Thompson 《Intensive care medicine》2015,41(11):1921-1930
10.