全文获取类型
收费全文 | 41851篇 |
免费 | 2151篇 |
国内免费 | 774篇 |
专业分类
耳鼻咽喉 | 173篇 |
儿科学 | 241篇 |
妇产科学 | 362篇 |
基础医学 | 3354篇 |
口腔科学 | 2366篇 |
临床医学 | 3769篇 |
内科学 | 2459篇 |
皮肤病学 | 89篇 |
神经病学 | 2237篇 |
特种医学 | 2097篇 |
外国民族医学 | 2篇 |
外科学 | 13876篇 |
综合类 | 7000篇 |
现状与发展 | 1篇 |
预防医学 | 1794篇 |
眼科学 | 210篇 |
药学 | 2957篇 |
60篇 | |
中国医学 | 1473篇 |
肿瘤学 | 256篇 |
出版年
2024年 | 99篇 |
2023年 | 591篇 |
2022年 | 1196篇 |
2021年 | 1755篇 |
2020年 | 1702篇 |
2019年 | 1273篇 |
2018年 | 1152篇 |
2017年 | 1314篇 |
2016年 | 1514篇 |
2015年 | 1411篇 |
2014年 | 2965篇 |
2013年 | 2953篇 |
2012年 | 2702篇 |
2011年 | 3101篇 |
2010年 | 2489篇 |
2009年 | 2376篇 |
2008年 | 2197篇 |
2007年 | 2175篇 |
2006年 | 1894篇 |
2005年 | 1694篇 |
2004年 | 1419篇 |
2003年 | 1104篇 |
2002年 | 859篇 |
2001年 | 724篇 |
2000年 | 595篇 |
1999年 | 502篇 |
1998年 | 398篇 |
1997年 | 376篇 |
1996年 | 272篇 |
1995年 | 231篇 |
1994年 | 214篇 |
1993年 | 175篇 |
1992年 | 139篇 |
1991年 | 120篇 |
1990年 | 90篇 |
1989年 | 69篇 |
1988年 | 80篇 |
1987年 | 80篇 |
1986年 | 63篇 |
1985年 | 85篇 |
1984年 | 70篇 |
1983年 | 64篇 |
1982年 | 82篇 |
1981年 | 75篇 |
1980年 | 54篇 |
1979年 | 49篇 |
1978年 | 46篇 |
1977年 | 34篇 |
1976年 | 41篇 |
1975年 | 37篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
目的:分析腹腔镜胆囊切除术的临床疗效,分析其对血清应激指标的影响。方法:将160例来我院行胆囊切除术的患者随机分为两组,对照组和观察组各80例。对照组采用开腹胆囊切除术,观察组则采用腹腔镜胆囊切除术。比较两组间手术时间、术中出血量、肠功能恢复时间以及住院天数差异,比较治疗前后两组患者间血清应激相关指标皮质醇(COR)、去甲肾上腺素(NE)、促肾上腺皮质激素(ACTH)、多巴胺(DA)以及胰岛素(INS)、三碘甲状腺原氨酸(T3)、甲状腺素(T4)、促甲状腺激素释放激素(TSH)水平差异。结果:观察组患者手术时间、术中出血量、肠功能恢复时间以及住院天数均显著少于对照组(P<0.05)。血清COR、NE、ACTH、DA和INS、T3水平在围手术期均发生了显著变化,各项指标均在胆囊分离时就明显升高,术后24 h开始下降(P<0.05);术后观察组上述指标均显著低于对照组(P<0.05)。结论:腹腔镜胆囊切除术对机体应激反应影响小于开腹手术,更利于患者术后康复。 相似文献
32.
33.
34.
Alper Kurtoglu Alauddin Kochai Mustafa Erkan Inanmaz Erhan Sukur Dogan Keskin Mehmet Türker Mustafa Uysal Zafer Sen Ismail Daldal 《Medicine》2021,100(13)
Different methods have been used throughout the years for syndesmotic injury but there is no consensus on the ideal treatment. Some methods are expensive and some have more complications. The aim of this study is to compare single suture endobutton with double suture endobutton and screw fixation for syndesmotic injury.Sixty nine patients with syndesmotic injury with fibular fractures whom were treated with a single interosseous suture endobutton system (ZipTightTM, Zimmer Biomet), a double interosseous suture endobutton system (ZipTightTM, Zimmer Biomet) and 1 syndesmotic screw (TST, Istanbul, Turkey) were included in this study. Functional and radiological results from patient records between 2015 and 2018 were retrospectively evaluated.Twenty patients were treated with the double interosseous suture endobutton, 23 were treated with the single interosseous suture endobutton, and 26 were treated with traditional AO screw fixation. Three patients from the screw fixation group (11.5%) required revision surgery (P < .05). All the radiologic and clinical outcomes were statistical similar in all 3 groups.Our findings showed that the interosseous suture endobutton system is at least as safe as the screw fixation technique for treatment of syndesmosis joint injuries and can be used as an alternative to the screw method. The interosseous suture endobutton system eliminates the need for a second surgery to remove the hardware, which minimizes the probability of re-diastasis. Since our results showed no statistical difference between single and double interosseous suture endobutton systems, the less costly single endobutton system may be the better alternative. 相似文献
35.
BackgroundBurnout in teachers has been linked to decreased effectiveness as educators, and suboptimal interactions with students. The purpose of this pilot study was to assess the outcomes of a brief Stress Management and Resiliency Training (SMART) program for public school staff.Materials and methodsThis single-arm, prospective trial involved an investigation of the effects of a brief SMART program on participant stress, anxiety, resilience, gratitude, happiness, life satisfaction, and quality of life (QOL).ResultsSignificant improvements were noted in participant anxiety (P < 0.001), stress (P = 0.003), gratitude (P = 0.001), happiness (P < 0.001), life satisfaction (P < 0.001), and QOL (P < 0.001). Most participants reported that the skills learned positively affected interactions with students (77.2%) and coworkers (72.2%).ConclusionsThe SMART program showed promising effectiveness for improving anxiety, stress, gratitude, happiness, life satisfaction and QOL. Given the prevalence and impact of teacher burnout, larger, controlled trials and broader dissemination of the intervention are warranted. 相似文献
36.
37.
目的:探讨可调式外固定支具治疗第5掌骨颈骨折的可行性及有效性。方法:选取2014年1月~2017年6月我院收治的54例第5掌骨颈骨折患者作为研究对象,随机分为A组和B组,每组27例。A组行闭合复位交叉克氏针固定,B组行手法整复可调式外固定支具固定,比较两组末次随访第5掌指关节活动度和主观满意度。结果:随访4~10个月,两组患者第5掌指关节活动度(ROM)值相比较,差异无统计学意义,P0.05;两组的主观满意度相比较,差异无统计学意义,P0.05。结论:手法整复可调式外固定支具固定可为第5掌骨颈骨折提供可靠、有效的固定,有助于患者的早期功能恢复,是一种有效的治疗方法。 相似文献
38.
《Injury》2019,50(4):1000-1003
AimThe screw length is important to achieve a stable fixation for medial malleoli fractures. We aimed to evaluate the optimal screw length for different age groups in surgically treated medial malleoli fractures. The second aim was to identify the utility of the distance of epiphyseal scar to joint line or joint line to medullary space for assessment of screw length.Material method368 X-rays and computed tomography (CT) images of ankle joints were retrospectively evaluated for optimal screw length, epiphyseal scar to joint line distance, joint to medullary space distance. The mean screw length for each decade was calculated. The correlations of screw length with age, screw length with distance of epiphyseal scar to joint line, and screw length with distance of joint line to medullary space were evaluated.ResultsThe optimal screw length was obviously decreased in patients in 61–70 and >70 years old group (p = 0.002). As the distance of epiphyseal scar from joint line was increased, the optimal length of screw was also increased (p = 0.001). The distance of epiphyseal scar from joint line was decreased by age (p = 0.011).ConclusionThe optimal screw length was decreased by age and the epiphyseal scar to joint line distance could be a clue for optimal screw length in medial malleoli fractures. 相似文献
39.
目的探讨关节镜下使用TightRope治疗后交叉韧带(PCL)撕脱骨折的技术应用和临床疗效。方法 12例膝关节PCL撕脱骨折患者在关节镜下使用TightRope固定PCL撕脱骨块。术后1周开始在支具保护下被动活动膝关节,术后10个月评估膝关节功能恢复情况。结果 12例患者均获随访,时间10~14个月,平均12.6个月,骨折均Ⅰ期愈合。1例屈膝受限15°,无伸膝受限;2例后抽屉试验(+)。Lysholm膝关节功能评分术前(45.6±6.3)分,术后10个月(87.8±4.8)分,差异有统计学意义(P 0.05)。结论关节镜下使用TightRope治疗PCL撕脱骨折固定可靠,操作相对简单,疗效满意。 相似文献