全文获取类型
收费全文 | 1678篇 |
免费 | 118篇 |
国内免费 | 22篇 |
专业分类
耳鼻咽喉 | 25篇 |
儿科学 | 50篇 |
妇产科学 | 13篇 |
基础医学 | 116篇 |
口腔科学 | 75篇 |
临床医学 | 128篇 |
内科学 | 303篇 |
皮肤病学 | 27篇 |
神经病学 | 97篇 |
特种医学 | 207篇 |
外科学 | 336篇 |
综合类 | 76篇 |
一般理论 | 1篇 |
预防医学 | 77篇 |
眼科学 | 54篇 |
药学 | 125篇 |
中国医学 | 25篇 |
肿瘤学 | 83篇 |
出版年
2024年 | 2篇 |
2023年 | 3篇 |
2022年 | 12篇 |
2021年 | 13篇 |
2020年 | 17篇 |
2019年 | 16篇 |
2018年 | 32篇 |
2017年 | 29篇 |
2016年 | 33篇 |
2015年 | 35篇 |
2014年 | 52篇 |
2013年 | 97篇 |
2012年 | 99篇 |
2011年 | 91篇 |
2010年 | 74篇 |
2009年 | 69篇 |
2008年 | 92篇 |
2007年 | 113篇 |
2006年 | 94篇 |
2005年 | 86篇 |
2004年 | 50篇 |
2003年 | 31篇 |
2002年 | 42篇 |
2001年 | 45篇 |
2000年 | 42篇 |
1999年 | 36篇 |
1998年 | 65篇 |
1997年 | 55篇 |
1996年 | 43篇 |
1995年 | 27篇 |
1994年 | 33篇 |
1993年 | 27篇 |
1992年 | 18篇 |
1991年 | 20篇 |
1990年 | 12篇 |
1989年 | 23篇 |
1988年 | 30篇 |
1987年 | 22篇 |
1986年 | 19篇 |
1985年 | 23篇 |
1984年 | 10篇 |
1983年 | 13篇 |
1982年 | 11篇 |
1981年 | 12篇 |
1980年 | 10篇 |
1979年 | 5篇 |
1978年 | 9篇 |
1977年 | 8篇 |
1976年 | 10篇 |
1975年 | 5篇 |
排序方式: 共有1818条查询结果,搜索用时 15 毫秒
81.
Lucio Boglione Silvia Corcione Nour Shbaklo Tiziana Rosso Tommaso Lupia Simone Mornese Pinna Silvia Scabini Giovannino Ciccone Ilaria De Benedetto Silvio Borr Francesco Giuseppe De Rosa 《Le infezioni in medicina : rivista periodica di eziologia, epidemiologia, diagnostica, clinica e terapia delle patologie infettive》2022,30(1):80
82.
Alessandro Cucchetti Eugenia Peri Matteo Cescon Matteo Zanello Giorgio Ercolani Chiara Zanfi Valentina Bertuzzo Paolo Di Gioia Antonio Daniele Pinna 《Journal of gastrointestinal surgery》2011,15(4):623-630
Background
Accurate knowledge of biliary anatomy and its variants is essential to ensure successful hepatic surgery; however, data from European countries are lacking. 相似文献83.
84.
Thiago Freire Pinto Bezerra Michael G. Stewart Marco Aurelio Fornazieri Renata Ribeiro de Mendonca Pilan Fabio de Rezende Pinna Francini Grecco de Melo Padua Richard Louis Voegels 《Revista brasileira de otorrinolaringologia (English ed.)》2012,78(3):57-62
Naasal obstruction is a common complaint in the population. When caused by a deviated nasal septum, septoplasty is the procedure of choice for treating these patients. NOSE is a tool for assessing the disease-specific quality of life related to nasal obstruction.AimTo assess the impact of septoplasty on patients with nasal obstruction secondary to deviated nasal septum based on the disease-specific quality-of-life questionnaire. Design: Prospective.MethodsPatients undergoing septoplasty with/ without turbinectomy after no clinical improvement with medical treatment were assessed by the NOSE questionnaire before and 3 months after surgery. We evaluated the surgical improvement based on total score, the magnitude of the surgery in the disease-specific quality of life and the correlation between the preoperative score and postoperatively improvement.ResultsFourty-six patients were included in the study. There was a statistically significant improvement in the preoperative NOSE score (md = 75, IQR = 26) and after three months (md = 10, IQR = 20) (p < 0.001.T-Wilcoxon). The standardized response mean was 3.07. We found a strong correlation between the preoperative score in the NOSE questionnaire and improvements in the postoperative period (r = -0.789, p < 0.001, Spearman). No difference was found in improvement scores by gender. (p = 0.668, U-Mann-Whitney).ConclusionSeptoplasty resulted in a statistically significant improvement in the disease-specific QOL questionnaire. 相似文献
85.
目的建立大鼠心肌梗死后心力衰竭模型,并进行评估,以提高存活率和成功率。方法分批对70只SD大鼠行冠状动脉左前降支结扎术,同时设15只假手术组,并计算死亡率。于4周时行血流动力学检查,检测心率(HR)、左心室舒张末压(LVEDP)、左室压力最大上升速率(+dp/dtmax)以及左室压力最大下降速率(-dp/dtmax)。结果4周时模型组HR、+dp/dtmax和-dp/dtmax绝对值均低于假手术组(P<0.05),LVEDP则高于假手术组(P<0.05)。随着手术大鼠例数增多,存活率得到提高(P<0.05)。结论心肌梗死后4周形成心力衰竭模型,通过经口气管插管法、选择结扎冠状动脉分支末梢部位、增加手术操作熟练程度,可提高动物存活率。 相似文献
86.
目的:评估人工流产(指手术流产)对乳腺癌危险性的可能影响。方法:研究在上海267040例妇女的一项乳房自我检查随机试验的队列人群中进行,由队列研究和巢式病例对照研究两部分组成。结果:依据基线调查表采集的资料分析,人工流产不增加乳腺癌危险性。调整潜在的混淆因素后,OR=1.06(95%CI:0.91~1.25)。人工流产次数增加无危险性趋势增加。从更详细的652例乳腺癌病例和694例对照资料分析,得出相似的结果。人工流产发生在首次生育后不增加危险性;少数妇女在首次生育前人工流产以及妊娠13周后人工流产,虽然被观察到危险性有增加,但无显著性统计学意义。结论:在中国,人工流产不是乳腺癌发生的重要原因。 相似文献
87.
88.
89.
A Papadopoulou MO Rawashdeh GA Brown AS McNeish IW Booth 《Acta paediatrica (Oslo, Norway : 1992)》1995,84(1):79-83
The short- and long-term effects of an elemental diet in children with acute Crohn's disease were compared with those of prednisolone in historical controls. Clinical remission was induced in 25 of 30 and in 18 of 28 episodes treated for six weeks with an elemental diet and prednisolone. Patients with proximal disease had longer remission after treatment with an elemental diet (p < 0.05) than did patients with colonic disease after treatment with prednisolone (p < 0.01). Disease activity index score improved in both groups compared with the pretreatment scores (p < 0.05). However, the improvement in the elemental diet group was significantly better than in the prednisolone group (p < 0.001). Changes in linear growth were better after treatment with an elemental diet compared with steroids (p < 0.001). Serum albumin and haematocrit concentrations all improved significantly in the children treated with an elemental diet (p < 0.001) but not in those treated with steroids. Thus an elemental diet was better than prednisolone in proximal disease and confirmed improved growth and nutritional status. 相似文献
90.
Ward LR Maguire C Hampton MD de Pinna E Smith HR Little CL Gillespie IA O'Brien SJ Mitchell RT Sharp C Swann RA Doyle O Threlfall EJ 《Communicable disease and public health / PHLS》2002,5(4):301-304
In June 2001, as part of a microbiological study of bagged, ready-to-eat salad products, Salmonella enterica serotype Newport was isolated from a sample of pre-packed green salad distributed by a major supermarket retailer. The strain was characterised by phage typing, plasmid profile typing and pulsed-field gel electrophoresis. Other isolates of S. Newport from cases of human infection in England and Wales in the first six months of 2001 were similarly characterised. Of 60 strains from cases of human infection, 19 were found to be indistinguishable from that isolated from the salad product. This study highlights the benefits of an integrated approach to outbreak investigations, involving the various elements of the PHLS and the Food Standards Agency, and acknowledges the full co-operation of the retailer in ensuring the rapid withdrawal of the contaminated product. 相似文献