全文获取类型
收费全文 | 37210篇 |
免费 | 3010篇 |
国内免费 | 543篇 |
专业分类
耳鼻咽喉 | 94篇 |
儿科学 | 787篇 |
妇产科学 | 368篇 |
基础医学 | 2026篇 |
口腔科学 | 207篇 |
临床医学 | 8451篇 |
内科学 | 7606篇 |
皮肤病学 | 189篇 |
神经病学 | 2271篇 |
特种医学 | 624篇 |
外国民族医学 | 4篇 |
外科学 | 1231篇 |
综合类 | 5856篇 |
一般理论 | 1篇 |
预防医学 | 5810篇 |
眼科学 | 65篇 |
药学 | 3339篇 |
107篇 | |
中国医学 | 975篇 |
肿瘤学 | 752篇 |
出版年
2024年 | 62篇 |
2023年 | 792篇 |
2022年 | 1146篇 |
2021年 | 2026篇 |
2020年 | 1917篇 |
2019年 | 1597篇 |
2018年 | 1540篇 |
2017年 | 1508篇 |
2016年 | 1643篇 |
2015年 | 1741篇 |
2014年 | 3705篇 |
2013年 | 3834篇 |
2012年 | 3121篇 |
2011年 | 3017篇 |
2010年 | 2177篇 |
2009年 | 1882篇 |
2008年 | 1738篇 |
2007年 | 1703篇 |
2006年 | 1297篇 |
2005年 | 936篇 |
2004年 | 699篇 |
2003年 | 518篇 |
2002年 | 381篇 |
2001年 | 317篇 |
2000年 | 238篇 |
1999年 | 188篇 |
1998年 | 147篇 |
1997年 | 121篇 |
1996年 | 128篇 |
1995年 | 96篇 |
1994年 | 84篇 |
1993年 | 62篇 |
1992年 | 48篇 |
1991年 | 44篇 |
1990年 | 39篇 |
1989年 | 17篇 |
1988年 | 35篇 |
1987年 | 20篇 |
1986年 | 21篇 |
1985年 | 34篇 |
1984年 | 28篇 |
1983年 | 18篇 |
1982年 | 13篇 |
1981年 | 13篇 |
1980年 | 17篇 |
1979年 | 17篇 |
1978年 | 9篇 |
1977年 | 9篇 |
1976年 | 9篇 |
1974年 | 5篇 |
排序方式: 共有10000条查询结果,搜索用时 36 毫秒
71.
72.
73.
目的明确Angiomemor(美国Simbionix公司生产)血管介入仿真模拟器是否有助于冠状动脉造影技术的掌握和提高。方法选取16名无血管放射介入经验的心血管医生,接受相同课时的冠状动脉介入造影理论培训后,按随机表编码随机分为模拟器培训组与非培训组各8名,模拟器培训组8名医生接受Angiomemor血管介入仿真模拟器培训,模拟冠状动脉造影操作,非培训组8名心血管医生未接受仿真模拟器培训。在随后的真实临床环境中操作冠状动脉造影时,评价2组医生冠状动脉造影操作过程中错误的频数、平均造影时间、造影剂使用量及术中放射线剂量。结果相对于非培训组,模拟器培训组医生在冠状动脉造影操作中错误频数减少62.5%、平均造影时间减少44.0%、造影剂使用量减少44.0%,术中平均放射线曝光时间减少了57.7%,平均X线累计曝光剂量减少51.6%,单位面积X线累计曝光剂量减少了52.4%。结论Angiomemor血管介入仿真模拟器有助于医生较快地熟练掌握冠状动脉造影技术,是冠状动脉介入规范化培训的重要辅助手段之一。 相似文献
74.
早期新生儿黄疸的动态监测及早期干预治疗效果评价 总被引:2,自引:2,他引:0
目的观察出生1周内新生儿黄疸的动态变化、高胆红素血症患儿病因分析及早期干预治疗的效果。方法利用经皮胆红素测定仪对我院产科出生的928例新生儿每日进行同一部位的皮肤测定,根据新生儿不同出生情况对超过胆红素值安全范围的及时给予口服药物或转儿科蓝光治疗。结果928例新生儿因高胆红素血症住院156例,高胆红素血症发生率为15.74%,无1例发生胆红素脑病。结论对新生儿黄疸进行监测和早期干预治疗,可大幅度降低高胆红素血症的发病率,从而防止胆红素脑病的发生。 相似文献
75.
学习成绩、家庭环境对学龄儿童自我意识的影响 总被引:2,自引:1,他引:1
目的探讨学习成绩、家庭环境对儿童自我意识的影响。方法采用经验评估法、家庭环境量表和Piers Harris儿童自我意识量表对 9.5~ 12岁 2 87名儿童的学习成绩、家庭环境和自我意识进行评定。结果自我意识总分学习困难组 ( 5 8.76± 11.0 1) <学习中等组 ( 64 .5 9± 7.87) <学习优秀组 ( 69.80± 7.5 1) ,家庭环境量表中的亲密度、情感表达、矛盾性、知识性、娱乐性和控制性 6个因素与自我意识相关。结论学习成绩、家庭环境对学龄儿童自我意识的形成和发展起重要的作用 ,改善家庭环境、提高学习成绩 ,可有利于儿童自我意识的发展。 相似文献
76.
77.
[目的]探讨吸烟对病人冠状动脉病变的影响。[方法]对吸烟组(5 0例)与不吸烟组(3 0例)进行冠状动脉造影,观察记录冠状动脉病变情况并进行统计学分析。[结果]两组冠状动脉病变记分、每日不同吸烟量与冠状动脉病变记分、不同的吸烟年限与冠状动脉病变记分比较均有统计学意义(P <0 .0 1)。[结论]长期吸烟可使冠状动脉病变程度加重,应加强对长期吸烟及冠状动脉介入术后病人的健康教育,有效预防和控制冠心病,提高人群的健康水平。 相似文献
78.
To evaluate the long-term effects of entacapone on both mean daily 'on' time and health-related quality of life (QoL) in patients with Parkinson's disease (PD) experiencing 'end-of-dose' motor fluctuations and the benefits of an early therapeutic intervention. A prospective, multicenter, observational, 12-month study was performed with an initial 3-month intervention phase, consisting of a phone call to half of the patients from randomly selected investigators to assess if dose adjustment was necessary. Effectiveness was determined by home diaries ('on' time), subscales II and III of the Unified Parkinson's Disease Rating Scale (UPDRS), and the Parkinson's Disease Questionnaire (PDQ-8). After 3 months of treatment, 4.0% of the intervention group patients discontinued the study, versus 18.4% in the control group ( P < 0.01). The improvement in 'on' time was significantly increased since the 3-month visit (21%, P < 0.0001) until the end of the study (23% at 12 months, P < 0.0001). Entacapone also induced significant reductions in the UPDRS scores for subscales II and III and in the PDQ-8 score. 11.2% of patients experienced at least one adverse reaction. This study confirms the effectiveness of entacapone in reducing motor fluctuations by increasing 'on' time, and in improving QoL of PD patients. An early adjustment of entacapone and levodopa doses reduces the number of treatment discontinuations during the first months of treatment. 相似文献
79.
Ilana B. Crome 《Drugs (Abingdon, England)》2006,13(3):203-224
Over the last two decades there has been accumulating evidence that both psychosocial and pharmacological treatment interventions can effect change in substance-misusing adults. Thus, treatment interventions implemented for young people with substance problems largely draw on the adult addiction experience and that of child and adolescent psychiatry and psychology. As young people with problematic drug use have different treatment needs, and require different interventions and services to those of adults, results of adult studies cannot necessarily be directly extrapolated to young people.
Over the last five years evidence has been rapidly mounting that treatment may potentially work in young people, but as yet it is not as extensive as that for adults. The interventions that appear most fruitful are those based on learning theory, e.g. cognitive behavioural therapy and family therapy. Outcome studies in young people demonstrate substantial variability in substance use and misuse following treatment. From the UK perspective, the evidence is almost entirely USA based, and these evaluations of non-UK treatment programmes for young people cannot be simply transferred or transported to UK healthcare settings. This has significant implications for practice and policy.
At this stage, 'guidelines' or 'guidance' that is available is either not directed at young people and/or is largely gleaned from the USA literature. In addition, it does not adequately capture the complexity of cases at front-line specialist settings. The management of young substance misusers in the UK is, in the main, 'beyond guidelines and guidance'.
The restricted treatment service network for young people in the UK makes the potential for undertaking studies on treatment effectiveness extremely limited, but because there is evidence of a growing number of young people requiring treatment, such specialist drug services require evaluation. Serious consideration of the establishment and funding of evaluation of treatment interventions to be delivered to young substance misusers in the UK is urgently needed. 相似文献
Over the last five years evidence has been rapidly mounting that treatment may potentially work in young people, but as yet it is not as extensive as that for adults. The interventions that appear most fruitful are those based on learning theory, e.g. cognitive behavioural therapy and family therapy. Outcome studies in young people demonstrate substantial variability in substance use and misuse following treatment. From the UK perspective, the evidence is almost entirely USA based, and these evaluations of non-UK treatment programmes for young people cannot be simply transferred or transported to UK healthcare settings. This has significant implications for practice and policy.
At this stage, 'guidelines' or 'guidance' that is available is either not directed at young people and/or is largely gleaned from the USA literature. In addition, it does not adequately capture the complexity of cases at front-line specialist settings. The management of young substance misusers in the UK is, in the main, 'beyond guidelines and guidance'.
The restricted treatment service network for young people in the UK makes the potential for undertaking studies on treatment effectiveness extremely limited, but because there is evidence of a growing number of young people requiring treatment, such specialist drug services require evaluation. Serious consideration of the establishment and funding of evaluation of treatment interventions to be delivered to young substance misusers in the UK is urgently needed. 相似文献
80.
目的探讨社区干预治疗对促进脑梗死患者功能恢复的效果。方法以自愿的方式选择通州区经委社区卫生服务站和八里桥社区卫生服务站所管辖社区内38例脑梗死恢复期患者随机分为治疗组和对照组,对治疗组患者进行为期1年的社区干预治疗,比较治疗组与对照组患者功能恢复情况(日常生活活动能力)。结果通过1年的早期社区干预治疗,治疗组较对照组患者功能恢复效果明显提高(P<0.01)。结论早期社区干预治疗对脑梗死患者功能恢复有促进作用。 相似文献