全文获取类型
收费全文 | 14887篇 |
免费 | 1171篇 |
国内免费 | 395篇 |
专业分类
耳鼻咽喉 | 266篇 |
儿科学 | 346篇 |
妇产科学 | 434篇 |
基础医学 | 2267篇 |
口腔科学 | 161篇 |
临床医学 | 1489篇 |
内科学 | 2627篇 |
皮肤病学 | 489篇 |
神经病学 | 1007篇 |
特种医学 | 585篇 |
外国民族医学 | 7篇 |
外科学 | 1322篇 |
综合类 | 843篇 |
现状与发展 | 1篇 |
一般理论 | 5篇 |
预防医学 | 864篇 |
眼科学 | 417篇 |
药学 | 1921篇 |
5篇 | |
中国医学 | 485篇 |
肿瘤学 | 912篇 |
出版年
2024年 | 18篇 |
2023年 | 140篇 |
2022年 | 367篇 |
2021年 | 579篇 |
2020年 | 356篇 |
2019年 | 453篇 |
2018年 | 514篇 |
2017年 | 419篇 |
2016年 | 529篇 |
2015年 | 700篇 |
2014年 | 868篇 |
2013年 | 858篇 |
2012年 | 1318篇 |
2011年 | 1299篇 |
2010年 | 712篇 |
2009年 | 567篇 |
2008年 | 867篇 |
2007年 | 828篇 |
2006年 | 744篇 |
2005年 | 703篇 |
2004年 | 633篇 |
2003年 | 574篇 |
2002年 | 489篇 |
2001年 | 271篇 |
2000年 | 285篇 |
1999年 | 236篇 |
1998年 | 118篇 |
1997年 | 105篇 |
1996年 | 79篇 |
1995年 | 81篇 |
1994年 | 55篇 |
1993年 | 44篇 |
1992年 | 66篇 |
1991年 | 50篇 |
1990年 | 50篇 |
1989年 | 40篇 |
1988年 | 39篇 |
1987年 | 34篇 |
1986年 | 27篇 |
1985年 | 33篇 |
1984年 | 20篇 |
1983年 | 19篇 |
1982年 | 19篇 |
1981年 | 15篇 |
1979年 | 26篇 |
1978年 | 17篇 |
1977年 | 15篇 |
1975年 | 33篇 |
1974年 | 22篇 |
1973年 | 18篇 |
排序方式: 共有10000条查询结果,搜索用时 62 毫秒
1.
Xiao-Long Tang Yan-Dong Miao Deng-Hai Mi 《World journal of gastrointestinal oncology》2022,14(1):366-368
The present letter to the editor is in response to the research “Outcomes of curative liver resection for hepatocellular carcinoma in patients with cirrhosis” by Elshaarawy et al in World J Gastroenterol 2021; 13(5): 424–439. The preoperative assessment of the liver reserve function in hepatocellular carcinoma (HCC) patients with cirrhosis is crucial, and there is no universal consensus on how to assess it. Based on a retrospective study, Elshaarawy et al investigated the impact of various classical clinical indicators on liver failure and the prognosis after hepatectomy in HCC patients with cirrhosis. We recommend that we should strive to explore new appraisal indicators, such as the indocyanine green retention rate at 15 min. 相似文献
2.
3.
Wojciech Szychta M.D. Ph.D. Gheorghe Cerin M.D. Ph.D. F.E.S.C. Bogdan Adrian Popa M.D. Armienti Felice M.D. Guido Lanzillo M.D. Ph.D. Marco Diena M.D. Grzegorz Opolski M.D. Ph.D. F.E.S.C. 《Echocardiography (Mount Kisco, N.Y.)》2015,32(6):1040-1043
Sinus venosus atrial septal defect (SV‐ASD) usually coexists with partial anomalous pulmonary vein connection (PAPVC). It is a difficult diagnosis in transthoracic echocardiography (TTE) due to eccentric position of defects. We present a rare case of atypical anatomical variation in PAPVC, which was never described before. Two right pulmonary veins drained into superior vena cava, which overrode SV‐ASD and interatrial septum, a third pulmonary vein into the right atrium. Complete diagnosis could not be set after TTE, nor transesophageal echocardiography, whereas angio‐CT was finally conclusive. This diagnostic approach allowed the surgical planning. 相似文献
4.
5.
6.
Agata Cieślik-Bielecka Paweł Reichert Rafał Skowroński Tomasz Bielecki 《Platelets》2019,30(6):728-736
The current literature suggests that the antibacterial effect of leukocyte- and platelet-rich plasma (L-PRP) is directly related to platelet and leukocyte concentrations. The aim of this study was twofold: first, to evaluate the antimicrobial effect of L-PRP against selected bacterial strains in vitro, and second, to correlate this effect with leukocyte and platelet content in the final concentration. Blood was collected from 20 healthy males, and L-PRP, acellular plasma (AP), and autologous thrombin were consecutively prepared. Flow cytometry analysis of the blood, L-PRP, and AP was performed. The L-PRP gel, liquid L-PRP, and thrombin samples were tested in vitro for their antibacterial properties against seven selected bacterial strains using the Kirby–Bauer disk-diffusion method. There was notable antimicrobial activity against selected bacterial strains. No statistically significant correlations between antimicrobial activities and the platelet concentration in L-PRP were observed. Statistically significant positive correlations between selected leukocyte subtypes and antimicrobial activity were noted. A negative correlation was found between elevated monocyte count and antimicrobial activity of L-PRP against one bacterial strain studied. L-PRP possesses antimicrobial activity and can be potentially useful in the fight against certain postoperative infections. The bactericidal effect of L-PRP is caused by leukocytes, and there exists a relationship among selected leukocyte subtypes and L-PRP antimicrobial activity. 相似文献
7.
Lee Mi Jung Romero Sergio Velozo Craig A. Gruber-Baldini Ann L. Shulman Lisa M. 《Quality of life research》2019,28(6):1595-1603
Quality of Life Research - This study investigated the PROMIS Self-Efficacy Measure for Managing Chronic Conditions (PROMIS-SE) domain distributions and examined the factor structure of the... 相似文献
8.
9.
10.
目的 探讨临床胜任力为导向的病例教学(case-based learning,CBL)在急危重症护理学本科教学中的可行性和有效性。方法 将急危重症护理本科生120人随机分为CBL教学组和传统教学组。根据每次实习学生人数,CBL教学组分为数个小组,每小组固定一个带教教师,并以小组为单位进行临床教学实践;传统教学组采用既往的临床实习教学方式,即一个学生固定跟随一个带教教师。采用理论考试、技能考试以及问卷调查等多种考核方式评价两组的教学效果,采用SPSS 21.0软件行t检验和卡方检验。结果 与传统教学组相比,CBL教学组在理论考试[(92.5±3.0) vs. (85.3±3.3)]和技能考试[(93.1±4.5) vs. (88.1±3.4)]方面均更好,且差异有统计学意义(P<0.05);在对教学满意度调查方面,CBL教学组优于传统教学组。结论 以临床胜任力为导向的CBL教学应用于急危重症护理本科教学是可行的,能有效培养学生的临床思维和提高实际的临床胜任力。 相似文献