首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   34204篇
  免费   3064篇
  国内免费   502篇
耳鼻咽喉   92篇
儿科学   843篇
妇产科学   299篇
基础医学   1722篇
口腔科学   288篇
临床医学   7764篇
内科学   7394篇
皮肤病学   145篇
神经病学   1936篇
特种医学   613篇
外国民族医学   4篇
外科学   1255篇
综合类   5143篇
一般理论   1篇
预防医学   4980篇
眼科学   71篇
药学   3108篇
  106篇
中国医学   944篇
肿瘤学   1062篇
  2024年   92篇
  2023年   777篇
  2022年   1164篇
  2021年   1854篇
  2020年   1766篇
  2019年   1487篇
  2018年   1402篇
  2017年   1468篇
  2016年   1590篇
  2015年   1707篇
  2014年   3399篇
  2013年   3692篇
  2012年   2899篇
  2011年   2741篇
  2010年   1983篇
  2009年   1697篇
  2008年   1526篇
  2007年   1505篇
  2006年   1132篇
  2005年   886篇
  2004年   669篇
  2003年   470篇
  2002年   357篇
  2001年   294篇
  2000年   212篇
  1999年   173篇
  1998年   137篇
  1997年   123篇
  1996年   113篇
  1995年   85篇
  1994年   69篇
  1993年   46篇
  1992年   54篇
  1991年   42篇
  1990年   32篇
  1989年   23篇
  1988年   28篇
  1987年   19篇
  1986年   13篇
  1985年   10篇
  1984年   6篇
  1983年   5篇
  1982年   5篇
  1981年   4篇
  1980年   4篇
  1979年   4篇
  1977年   1篇
  1976年   1篇
  1975年   1篇
  1974年   2篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
211.
In August 1988 a Swedish schoolbus with 23 children and 11 adult passengers crashed into a tunnel wall in Norway. Twelve children and four parents died, 18 of the passengers survived. The victims' relatives (parents, spouses, siblings, and others) were transported to Norway and given a confronting support program at the University hospital in Bergen. The crisis intervention program is described: how the relatives were helped to confront and actively cope with some of the stressful situations from which traumatized families very often are protected. One year later 42 of the relatives answered a questionnaire evaluating the confronting support program that was offered during their stay in Norway. A majority of the respondents did not regret their participation in the program. The answers indicate that passivity and helplessness can be counteracted through a combination of confrontation with reality and emotional support.The study has received financial support from Skandia Insurance Co. (Sweden), Haukeland University Hospital and Norwegian Research Council for Science and the Humanities (377.92/021).  相似文献   
212.
陕西省眉县健康教育干预5岁以下儿童腹泻效果评价   总被引:5,自引:2,他引:3  
为了探讨适合我国农村社区的健康教育方法,陕西省眉县被确定为西北地区的试点。本文运用格林模式,采取健康教育、改水、改厕三位一体方法,通过2年的健康教育综合性干预,实验乡5岁以下儿童腹泻发病率较对照乡及干预前均有明显下降,儿童母亲防治儿童腹泻的知、信、行水平也显著提高(P<001),进一步证实综合干预在农村社区健康教育中运用的可行性。同时,初步探索出了一些适合我国农村社区的健康教育实施经验。  相似文献   
213.
A psychosocial profile was developed of 122 pregnant adolescents attending a public hospital antenatal clinic in a large regional Australian area. Participants completed the Rosenberg Self-Esteem Scale and the Support Behaviours Inventory and were interviewed to obtain psychosocial and demographic information. Results revealed that those who were most likely to have either or a combination of poor self-esteem, lack of social support, be unemployed or smoke, were more likely to be living alone or with friends, not have a partner or have a partner for a shorter period, have a partner who was older, have previous children, have not planned their pregnancy and have less education. The degree of social support was significantly associated with self-esteem. Over half of the sample smoked, and over half were unemployed. These results underscore the importance of addressing psychosocial factors in the implementation of care for the pregnant adolescent.  相似文献   
214.
Background. The “obesogenicity” of modern environments is fueling the obesity pandemic. We describe a framework, known as ANGELO (analysis grid for environments linked to obesity), which is a conceptual model for understanding the obesogenicity of environments and a practical tool for prioritizing environmental elements for research and intervention.Methods: Development of the ANGELO framework. The basic framework is a 2 × 4 grid which dissects the environment into environmental size (micro and macro) by type: physical (what is available), economic (what are the costs), political (what are the “rules”), and sociocultural (what are the attitudes and beliefs). Within this grid, the elements which influence food intake and physical activity are characterized as obe sogenic or “leptogenic” (promoting leanness).Results: Application of the ANGELO framework. The ANGELO framework has been piloted at the population level (island communities) to prioritize the settings/sectors for intervention and at the setting level (fast food outlets) to prioritize research needs and interventions. Environmental elements were prioritized by rating their validity (evidence of impact), relevance (to the local context), and potential changeability.Conclusions. The ANGELO framework appears to be a flexible and robust instrument for the needs analysis and problem identification stages of reducing the obe sogenicity of modern environments.  相似文献   
215.
目的:探讨睡眠呼吸暂停综合征(SAS)患者夜间睡眠呼吸参数的变化及相应护理对策。方法:对16例SAS住院患者在治疗前、睡眠姿势训练、气道持续正压(CPAP)呼吸机治疗三种状态下,进行整夜多导睡眠仪监测。结果:在SAS整夜呼吸紊乱中,零点以后其危险因素大大增加,出现严重低氧血症,血压升高,心律失常,尤其是呼吸暂停时间延长,次数增加。而侧卧位可显著地改善低氧血症,最低血氧饱和度(SaO2)从(62±19)%升高至(83±11)%(P<0.01),CPAP呼吸机治疗能使呼吸调节障碍得到明显的恢复,呼吸暂停由(44.3±22.6)次降至(0.25±0.54)次(P<0.01)。结论:护理上应密切观察病情变化,特别是零点以后应加强巡视,除观察呼吸运动外还应警惕脑血管病及心脏疾病的发生,对不具备CPAP呼吸机治疗条件者宜采取睡眠时督促取侧卧位。对SAS患者进行健康教育也是减少危险因素的重要护理措施。  相似文献   
216.
新生儿缺氧缺血性脑损伤亚低温干预大鼠模型的建立   总被引:4,自引:0,他引:4  
为探讨不同疗程亚低温对新生儿脑损伤的保护作用,建立新生儿缺血缺氧性脑损伤亚 温干预大鼠模型,先在7日龄清洁级SD大鼠上以右颈总动脉结扎术和吸入低氧浓度气体法制备缺血缺氧性脑损伤(HIBD)模型,再将其随机分为室温恢复组(RoT组,n=44)和3种疗程(24h,48h,72h)的亚低温干预组(Hy24组,n=26,Hy48组,n=14,Hy72组,n=20)。亚低温干预期间采用配方奶喂养,并监测脑温  相似文献   
217.
Whole blood coagulation analysers are widely used during percutaneous coronary interventions. The precise degree of anticoagulation in patients is important in this setting. The aim of this investigation was to compare the results obtained with ACT (Hemochron) and HMT, the Heparin Management Test (TAS) in patients undergoing percutaneous coronary interventions. Patients (n=100) were enrolled prospectively. Each patient received 10,000 units of heparin. At the end of the procedure, the mean ACT was 284±31 seconds and the mean HMT was 292±33 seconds. The correlation between the two methods was highly significant (r=0.64, p<0.001). The HMT correlates well with ACT values in patients undergoing percutaneous coronary interventions. Its use in the management of these patients should be considered.  相似文献   
218.
营养干预对社区几种慢性疾病的效果评价   总被引:8,自引:2,他引:6  
选取87名家住成都市有血糖、血压、血脂异常者为研究对象,经过配制食谱、营养教育咨询等干预措施,观察了以下指标的变化:1.空腹血糖和餐后2小时血糖;2.血清胆固醇和甘油三酯;3.血压和体重;4.症状评分。用配对t检验、相关和逐步回归分析对资料进行处理。结果表明,采用营养干预措施10周以后,以上各项指标均有显著降低。可以认为合理饮食是控制社区这几种慢性病简便有效的措施。  相似文献   
219.
为研究健康教育行为干预对降低小学生肠道寄生虫感染率的效果,探讨小学生肠道寄生虫病的防治方法,在苍山县随机选取860名小学生进行为期2年的研究.单纯健康教育行为干预组、行为干预加驱虫组、单纯驱虫组及对照组,肠道寄生虫感染率实验前分别为64.13%、61.23%、63.12%和60.70%,实验后分别为41.67%、26.52%、53.57%和60.61%.结果表明:健康教育行为干预对降低小学生肠道寄生虫感染率具有重要作用;健康教育行为干预加针对性驱虫是控制小学生肠道寄生虫感染的最佳模式.  相似文献   
220.
  • ? Psychological stressors are said to be an important influence on the outcome of chronic illnesses such as rheumatoid arthritis (Engel, 1977).
  • ? Helping patients to cope with stressors is identified as a central concept in the delivery of nursing care (Khan et al., 1994). It is thus reasonable to suggest that rheumatology nurses may be key players in the process of coping with rheumatoid arthritis.
  • ? But in order for rheumatology nurses to be effective players in this process, they need to discourage coping behaviour(s) linked to poor outcomes, and/or promote an overall behaviour pattern linked to a better outcome. Literature showing the link between different coping behaviours and outcome is examined, and cognitive restructuring is emphasized as one method nurses could use.
  • ? Having identified coping behaviour which is optimal in terms of future outcome, further study of different forms of coping-based educational intervention is suggested, to reveal how such patterns of behaviour can be taught by nurses in the most effective way
  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号