全文获取类型
收费全文 | 13022篇 |
免费 | 757篇 |
国内免费 | 295篇 |
专业分类
耳鼻咽喉 | 216篇 |
儿科学 | 241篇 |
妇产科学 | 66篇 |
基础医学 | 1192篇 |
口腔科学 | 269篇 |
临床医学 | 1859篇 |
内科学 | 1506篇 |
皮肤病学 | 44篇 |
神经病学 | 2013篇 |
特种医学 | 682篇 |
外国民族医学 | 1篇 |
外科学 | 1339篇 |
综合类 | 1437篇 |
预防医学 | 1307篇 |
眼科学 | 81篇 |
药学 | 851篇 |
10篇 | |
中国医学 | 651篇 |
肿瘤学 | 309篇 |
出版年
2024年 | 23篇 |
2023年 | 175篇 |
2022年 | 469篇 |
2021年 | 607篇 |
2020年 | 561篇 |
2019年 | 514篇 |
2018年 | 539篇 |
2017年 | 473篇 |
2016年 | 423篇 |
2015年 | 436篇 |
2014年 | 987篇 |
2013年 | 1144篇 |
2012年 | 837篇 |
2011年 | 971篇 |
2010年 | 702篇 |
2009年 | 731篇 |
2008年 | 712篇 |
2007年 | 631篇 |
2006年 | 608篇 |
2005年 | 462篇 |
2004年 | 341篇 |
2003年 | 264篇 |
2002年 | 196篇 |
2001年 | 188篇 |
2000年 | 168篇 |
1999年 | 156篇 |
1998年 | 116篇 |
1997年 | 94篇 |
1996年 | 72篇 |
1995年 | 63篇 |
1994年 | 44篇 |
1993年 | 44篇 |
1992年 | 41篇 |
1991年 | 33篇 |
1990年 | 31篇 |
1989年 | 23篇 |
1988年 | 30篇 |
1987年 | 16篇 |
1986年 | 13篇 |
1985年 | 15篇 |
1984年 | 10篇 |
1983年 | 14篇 |
1982年 | 18篇 |
1981年 | 12篇 |
1979年 | 7篇 |
1978年 | 10篇 |
1977年 | 7篇 |
1976年 | 8篇 |
1975年 | 6篇 |
1974年 | 6篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
Lillian Comas-Diaz 《Clinical psychology》2006,13(3):273-277
This article discusses clinical psychologists' current concerns, challenges, and opportunities in private practice. The future of clinicians in independent practice is presented within two paradigms, namely, psychology as a health profession, and psychology as life enhancement. Finally, the author argues that psychotechnology, corporate clinical psychology, and psychology as life enrichment will evolve within the future of clinical psychological independent practice. 相似文献
22.
Convergent Reliability and Validity of the Questions About Behavioral Function and the Motivation Assessment Scale: A Replication Study 总被引:1,自引:1,他引:0
Karrie A. Shogren Johannes Rojahn 《Journal of developmental and physical disabilities》2003,15(4):367-375
This study compared key psychometric properties of the Motivation Assessment Scale (MAS) and the Questions About Behavioral Function (QABF) and explored their convergent validity. Twenty adults with mental retardation and problem behaviors (aggression, self-injury, or property destruction) and 31 respondents participated. Test–retest reliability of the subscales in both scales was good to excellent (Cicchetti, D. V., 1994, Psychol. Assess. 6: 284–290), and—except for 1 QABF subscale—internal consistency was good considering the small number of items and the purpose of the scale. Consistent with some earlier studies, interrater reliability was less satisfactory with both scales falling only into the fair to good range.Correlations between functionally equivalent subscales were statistically significant and were generally higher than correlations between nonequivalent subscales. The QABF and the MAS were found to be comparable in terms of the assessed reliabilities, and both instruments appear to be measuring very similar constructs. 相似文献
23.
尽早发现故障苗头,并将故障消灭于萌芽状态,是预防性维修的目的,是维修工作的最高境界,具体工作包括定期保养,定期检查,随即处置隐患,根据从业多年经验小结了一些针对螺旋CT的预防性维修感受。 相似文献
24.
目的了解安亭地区已婚妇女健康状况,并进行分析,提出相应干预措施。方法2005年10月,按上海市妇女所制定的妇科病体检标准,开展普查普治工作,由区妇幼所承担普查任务。检查项目包括妇科、乳房、阴道分泌物、宫颈脱落细胞及B超检查等。结果妇科常见病主要为慢性宫颈炎,其次为阴道炎。慢性宫颈炎中宫颈糜烂占首位,宫颈脱落细胞检查发现50岁组巴氏Ⅱ级发生率占第1位。结论保障妇女身心健康,建议定期开展妇女病普查,普及防病知识,增强妇女自我保健意识,加强更年期保健,倡导健康生活方式。 相似文献
25.
The aim of this pilot study was to examine the role of the striatum and cerebellum in the adaptation to a novel movement within a sequence of practiced movements using a motor learning paradigm. The performance of patients in the early or advanced stages of Parkinson's disease (PD) and of patients with damage to the cerebellum (CE) was compared, respectively to a group of aged and young matched controls on an adapted version of the Mirror-Tracing Test. In this task, subjects were required to trace a series of complex figures in two conditions: (1) a Practiced condition, in which the figures were composed of the juxtaposition of three simple designs that were extensively practiced before; and (2) a Mixed condition in which triads were created by replacing the last simple figure of the triads in the Practiced condition by a new simple figure that had never been traced individually before. Results showed that all clinical groups were slower than controls at tracing the Practiced triads. Most interestingly, however, only patients in the advanced stages of PD showed increased completion time to trace the triads in the Mixed condition. This suggests that a bilateral striatal dysfunction affects the ability to adapt to a novel motion within a sequence of practiced movements. Although exploratory, these results support a functional dissociation between the striatum and cerebellum in acquiring visuomotor skilled behaviors. 相似文献
26.
脉搏波形采集与辅助诊断系统的设计 总被引:1,自引:0,他引:1
季鑫源 《中国神经再生研究》2009,13(4):655-658
在分析现有脉搏信号测量技术及其处理方法的基础上,设计了以AT89S52单片机为下位机,PC机为上位机的脉搏信号采集装置。利用Delphi强大的数据库支持特性和Delphi与Matlab混合编程技术,开发了脉搏信号辅助诊断系统。该系统界面友好,操作简单,数据处理能力强,实现了脉搏信号的采集,脉搏波形的实时显示、回放等功能。通过对临床患者脉搏数据的实际采集和处理,验证了该系统的有效性和实用性。 相似文献
27.
Sandra Fabian Heike Hesse Roland Grassme Ingo Bradl Annette Bernsdorf 《Pathophysiology》2005,12(4):281-287
The results of most reported studies show differences between the muscular activity of low back pain patients and healthy subjects, but the focus has usually been on trunk muscles only, and they have not involved work-related tests or exercises. The reintegration of chronic low back pain patients to job market is a common problem. Therefore assessment systems like the functional capacity evaluation (FCE) according to Isernhagen [S.J. Isernhagen, Work Injury: Management and Prevention, Aspen Publishers Inc., Gaithersburg, MD, 1988] are often used tools to determine the physical abilities and deficits of long-time incapacitated persons. The aim of the present study was to compare the healthy persons and chronic low back pain patients in performing a FCE-test and to analyse their muscular activation and motion patterns. The results indicate differences in the activation patterns of the groups in the test task “floor to waist lift” common in many occupations. 相似文献
28.
Javier Alegre-López José Cordero-Guevara José L. Alonso-Valdivielso Julia Fernández-Melón 《Osteoporosis international》2005,16(7):729-736
Hip fracture results in excess mortality and functional disability. This study sought to identify predictors of mortality and limited functional ability 1 year after hip fracture. We conducted a 1-year follow-up of a prospective population-based inception cohort of 218 hip fracture patients who had been consecutively admitted and discharged from hospital during the previous year. Mortality was observed to be independently associated with poor mental status (relative risk [RR]=6.96; 95% confidence interval [95% CI], 1.73–28.00), prefracture limited functional ability (RR=4.35; 95% CI, 1.32–14.36), institutionalized disposition at discharge (RR=2.92; 95% CI, 1.02–8.38), and male gender (RR=2.44; 95% CI, 1.01–5.93). Independent predictors of limited functional ability were prefracture functional disability (RR=34.14; 95% CI, 3.13–372.33), poor mental status (RR=9.71; 95% CI, 1.57–59.82), age >80 years (RR=4.03; 95% CI, 1.48–11.00), and female gender (RR=3.57; 95% CI, 0.08–0.98). On discharge, special attention and care should thus be given to all patients displaying any of the above predictive factors. 相似文献
29.
30.
抗抑郁治疗对功能性消化不良的辅助治疗作用 总被引:6,自引:0,他引:6
功能性消化不良是指具有上腹痛、上腹胀,早饱、暖气、食欲不振、恶心、呕吐等上腹不适症状,经检查排除引起这些症状的器质性疾病的一组临床综合征。在经济、科技、工业化高度发展的社会,已经成为危害人们健康状况和生活质量的最常见的消化系统疾病,因而受到广泛重视。欧美的流行病学调查表明,普通人群中有消化不良症状者占19%-41%,在我国人群中总的患病率为20%。普通门诊中占20%-40%,在消化专科中占60%-70%。FD的发病机制复杂,部分患者存在精神心理的异常,本文通过对FD患者进行抑郁自评量表(zuag评分)评定和抗抑郁药物治疗,旨在探讨二者关系及抗抑郁治疗FD的疗效。 相似文献