全文获取类型
收费全文 | 6148篇 |
免费 | 486篇 |
国内免费 | 197篇 |
专业分类
耳鼻咽喉 | 36篇 |
儿科学 | 76篇 |
妇产科学 | 77篇 |
基础医学 | 583篇 |
口腔科学 | 104篇 |
临床医学 | 743篇 |
内科学 | 395篇 |
皮肤病学 | 22篇 |
神经病学 | 148篇 |
特种医学 | 111篇 |
外科学 | 250篇 |
综合类 | 1578篇 |
现状与发展 | 1篇 |
一般理论 | 7篇 |
预防医学 | 1560篇 |
眼科学 | 32篇 |
药学 | 410篇 |
7篇 | |
中国医学 | 561篇 |
肿瘤学 | 130篇 |
出版年
2024年 | 7篇 |
2023年 | 128篇 |
2022年 | 237篇 |
2021年 | 252篇 |
2020年 | 278篇 |
2019年 | 245篇 |
2018年 | 236篇 |
2017年 | 228篇 |
2016年 | 264篇 |
2015年 | 274篇 |
2014年 | 616篇 |
2013年 | 612篇 |
2012年 | 469篇 |
2011年 | 530篇 |
2010年 | 354篇 |
2009年 | 302篇 |
2008年 | 287篇 |
2007年 | 273篇 |
2006年 | 239篇 |
2005年 | 177篇 |
2004年 | 146篇 |
2003年 | 134篇 |
2002年 | 98篇 |
2001年 | 83篇 |
2000年 | 73篇 |
1999年 | 44篇 |
1998年 | 39篇 |
1997年 | 24篇 |
1996年 | 26篇 |
1995年 | 23篇 |
1994年 | 14篇 |
1993年 | 18篇 |
1992年 | 9篇 |
1991年 | 14篇 |
1990年 | 12篇 |
1989年 | 9篇 |
1988年 | 6篇 |
1987年 | 7篇 |
1986年 | 2篇 |
1985年 | 6篇 |
1983年 | 3篇 |
1981年 | 5篇 |
1980年 | 8篇 |
1979年 | 4篇 |
1978年 | 3篇 |
1977年 | 3篇 |
1976年 | 3篇 |
1975年 | 1篇 |
1974年 | 1篇 |
1973年 | 4篇 |
排序方式: 共有6831条查询结果,搜索用时 31 毫秒
991.
目的对支原体肺炎(MPP)伴有肺不张患儿实行电子支气管镜灌洗治疗,观察其临床疗效。方法以某院2018年3月至2019年9月收治的120例MPP伴有肺不张患儿为研究对象,按照随机数表法将其分为对照组与观察组,对照组行常规治疗,观察组在常规治疗基础上行电子支气管镜灌洗治疗,比较两组治疗第3天、1周后治疗转归情况。结果观察组治疗第3天肺复张有效率为93.3%,对照组为25.0%,观察组明显优于对照组,差异有统计学意义,P<0.05。治疗1周后,观察组总有效率为98.3%,对照组为61.7%,观察组明显优于对照组,差异有统计学意义,P<0.05。结论采用电子支气管镜灌洗治疗支原体肺炎伴肺不张患儿,可准确观察其病情状态,促进肺复张。 相似文献
992.
目的评价电子化牙周检查记录软件在牙周病学临床教学中的应用效果。方法将基于HTML+CSS+JavaScript等技术开发的电子化牙周检查记录软件应用到牙周临床教学中,并对应用该软件的52名学生和12名带教教师进行问卷调查。结果电子化牙周检查记录软件在临床教学中的应用得到学生与教师的认可,73.08%的学生和75.00%的教师认为电子化牙周检查记录软件可以完全取代纸质牙周检查记录表。结论电子化牙周检查记录软件有助于学生更好地学习,有利于牙周临床教学工作更好地实施与开展。 相似文献
993.
994.
Mark I. Evans Robert D. Eden David W. Britt Barry S. Schifrin 《The journal of maternal-fetal & neonatal medicine》2019,32(15):2561-2569
Background: Even key opinion leaders now concede that electronic fetal monitoring (EFM) cannot reliably identify fetal acidemia which many vouch as the only labor mediated pathophysiologic precursor for cerebral palsy (CP). We have developed the “Fetal Reserve Index” – an algorithm combining five dynamic components of EFM (1. Rate, 2. Variability, 3. Accelerations, 4. Decelerations, and 5. Excessive uterine activity) considered individually that are combined with the presence of: 6. maternal, 7. obstetrical, and 8. fetal risk factors.Objective: Here, we compare this 8-point fetal reserve index (FRI) against the performance of ACOG monograph criteria and ACOG Category systems for predicting risk for both CP and the need for emergency operative delivery (EOD). We then studied how varied management for screen positives (Red zone-defined below) impacts the outcome of such cases.Study design: Four hundred twenty term patients were studied: all entered labor with normal EFMs and no apparent cause of harm except events of labor and delivery. Sixty subsequently developed CP, and 360 were apparently normal controls. An FRI, normal on all eight parameters scored 100%, 4 of the 8 was 50%, etc. We divided cases into Green zone >50%, Yellow 50–26%, and Red ≤25%. An FRI in the Red zone was considered a positive screen. We then compared performance metrics for the three evaluation schemes and differences between controls that reached Red against those controls whose worst scores were Green/Yellow.Results: For detection of injury during labor, the FRI performed much better than the ACOG Category criteria (sensitivity 28%), and Category III (45%) (p?.001). All CP cases reached Red zone and were Red for a minimum of 2 hours (mean?=?5.35 hours). Twenty-four% of controls reached Red, but were only Red for average of 1?hr. The incidence of low Apgar’s, pH, FRI, and Lowest FRI increased progressively from Green/Yellow controls to red controls to CP cases. Irrespective, CP cases met ACOG Monograph criteria for labor injury less than 50% of the time. Only half of CP babies had umbilical artery pH values <7.00, and less than 50% showed Category III patterns. The earlier in labor the Red zone was reached, the more likely for a baby to develop CP or the mother to require an EOD regardless of fetal outcome. Successful intrauterine resuscitations (IR) diminished time spent in the Red zone and the need for EODs.Conclusions: FRI shows better discrimination for adverse fetal outcome and EOD than traditional EFM interpretation. The Category system is a very poor, subjective screening method as the vast majority of CP babies never reach the “action point” result of Category III. While reaching the Red zone does not ordain a bad outcome, how it is managed, does. Compared to CP cases, Red controls were delivered faster, had higher FRIs, and often had prompt management including IR maneuvers, which improved the FRI and lowered the risk of EODs even for cases with normal outcomes. With further study and validation, the quantitative FRI approach may replace the current, very subjective interpretation with a quantitative “lab test” approach. 相似文献
995.
996.
丁杨 《中华医学图书情报杂志》2019,28(3):73-75
概述了云桌面的相关概念及特点,介绍了中日友好医院图书馆云桌面建设的各个阶段及其目前在图书馆的应用情况和存在的不足,并提出了解决方案,以期为其他图书馆电子阅览室云桌面的建设提供借鉴和参考。 相似文献
997.
Continuous electronic fetal monitoring (EFM) was first introduced commercially over 50 years ago with the hope of improving perinatal outcomes during labor. However, despite the increased use of EFM, definitive improvements in perinatal outcomes have not been demonstrated. Variance in tracing interpretation and intervention has led to increased rates of cesarean and operative vaginal deliveries and perhaps increased maternal and neonatal morbidity. Since its inception, several strategies have been developed in hopes of optimizing EFM and improving these outcomes. We discuss the current standards of intrapartum fetal monitoring and review optimization strategies and technologies in development to improve intrapartum fetal monitoring. 相似文献
998.
999.
1000.