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   19341篇
  免费   1213篇
  国内免费   92篇
耳鼻咽喉   55篇
儿科学   638篇
妇产科学   162篇
基础医学   2991篇
口腔科学   80篇
临床医学   3517篇
内科学   1229篇
皮肤病学   98篇
神经病学   3572篇
特种医学   207篇
外科学   557篇
综合类   2037篇
现状与发展   1篇
一般理论   10篇
预防医学   4154篇
眼科学   23篇
药学   868篇
  3篇
中国医学   254篇
肿瘤学   190篇
  2024年   31篇
  2023年   367篇
  2022年   608篇
  2021年   761篇
  2020年   751篇
  2019年   715篇
  2018年   680篇
  2017年   629篇
  2016年   699篇
  2015年   601篇
  2014年   1233篇
  2013年   1561篇
  2012年   1190篇
  2011年   1405篇
  2010年   1003篇
  2009年   1110篇
  2008年   1137篇
  2007年   1133篇
  2006年   888篇
  2005年   598篇
  2004年   531篇
  2003年   438篇
  2002年   339篇
  2001年   333篇
  2000年   227篇
  1999年   195篇
  1998年   168篇
  1997年   161篇
  1996年   111篇
  1995年   98篇
  1994年   86篇
  1993年   78篇
  1992年   64篇
  1991年   56篇
  1990年   61篇
  1989年   39篇
  1988年   44篇
  1987年   32篇
  1986年   45篇
  1985年   57篇
  1984年   53篇
  1983年   28篇
  1982年   38篇
  1981年   46篇
  1980年   35篇
  1979年   33篇
  1978年   23篇
  1977年   45篇
  1976年   24篇
  1974年   17篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
老年人健康行为与心理健康关系的调查   总被引:3,自引:0,他引:3  
目的探讨老年人的健康行为与心理健康之间的关系。方法采用候玉波等编制的健康行为量表和症状自评量表(SCL-90)对300名老年人进行测试,并进行相关分析。结果不同年龄和文化程度老年人在健康行为与心理健康方面有显著性差异(P〈0.05);参与活动与心理健康水平呈显著正相关(P〈0.05);心理应激、不良生活习惯与心理健康呈显著负相关(P〈0.05)。结论积极参与各项活动、减少各种心理应激和建立良好的生活习惯有利于提高老年人的心理健康水平。  相似文献   
42.
Background  Reduced left ventricular ejection fraction (LVEF) is a risk factor for poor outcomes in patients with coronary artery disease (CAD). Mental stress-induced myocardial ischemia (MSIMI) also identifies a subset of CAD patients at increased risk for future cardiovascular events. Susceptibility to MSIMI in patients with CAD and reduced LVEF is unknown. Methods and Results  We enrolled 182 patients (67 women) with a mean age of 64 years and a documented history of CAD in this study. Baseline resting ejection fraction was determined by use of technetium 99m sestamibi gated single photon emission computed tomography. Abnormal LVEF was defined as less than 45% for men and less than 50% for women (based on published norms for our software [Cedars-Sinai Medical Center]). All participants underwent mental stress testing with a public speaking task. Rest/stress myocardial perfusion single photon emission computed tomography was performed via conventional methodology. Images were visually compared for number and severity of perfusion defects by use of a scoring method from 0 to 4. A summed difference score was calculated as the difference between summed stress and rest scores. A score of greater than 3 was considered abnormal. MSIMI developed in 19% of patients with normal LVEF and 31% of those with reduced LVEF. There is no statistically significant difference between the two groups (P=.11). Conclusions  CAD patients with left ventricular dysfunction are equally susceptible to MSIMI as those with normal LVEF. This study was supported by grants HL 070265 and HL 072059 from the National Heart. Lung, and Blood Institute. This material is also the result of work supported by resources and with the use of facilities at the Department of Veterans. Affairs Medical Center, Gainesville, Fla.  相似文献   
43.
目的探索社交焦虑障碍(SAD)患者父母的人格特征和心理健康状况。方法设研究组(SAD患者的父母)和对照组。入组时按要求进行艾森克人格问卷(EPQ)和症状自评量表(SCL-90)评定。结果SAD患者的父母在EPQ量表测验中的内外向因子标准分低于对照组;SAD患者的父母SCL-90各项因子除强迫和敌对因子,标准分低于对照组。结论SAD患者的父母的人格特征倾向内向,易安静、内省、离群、不喜欢接触人;SAD患者的父母更容易表现出躯体化症状、人际交往的困惑、抑郁、焦虑、恐怖和偏执。  相似文献   
44.
银屑病患者心理卫生状况与家庭功能的相关性研究   总被引:1,自引:1,他引:0  
目的通过对60例银屑病患者的心理卫生状况和其家庭功能进行调查,揭示家庭功能与患者心理状况的关系.方法采用家庭Apqar调查表和症状自评量表(SCL-90)进行随机问卷调查,将高功能家庭与失职家庭的SCL-90各项的数据进行比较.结果高功能家庭患者的身心问题较低功能家庭的少,高功能家庭的患者能积极地对待疾病和生活,有利于疾病的康复,并提高了生活质量.结论护理人员应做好家属的宣教工作,使家属重视银屑病患者的心理需要,努力去了解患者的心理变化,并给予及时的帮助,以促进患者早日康复.  相似文献   
45.
Objective  The objective of this study was to describe the perceived health status of the meat industry employees—i.e., working in the slaughtering, cutting, and boning of large animals and poultry—and its relation to their organisational and psychosocial constraints at work. Methods  This postal survey included all 3,000 employees of the meat industry (beef, pork and poultry) in four districts in Brittany, France, whose companies were affiliated with the agricultural branch of the national health insurance fund. The questionnaire asked for social and demographic data and information describing their job and the organisation of their work. The psychosocial factors at work were described according to Karasek’s questionnaire (demand, latitude and social support at work). Perceived health was measured with the Nottingham Health Profile perceived health indicator. Results  This study shows the high prevalence of poor health reported by the workers in this industry. This poor perceived health was worse in women and increased regularly with age. Among the psychosocial factors studied, high quantitative and qualitative demand at work, inadequate resources for good work and to a lesser extent, inadequate prospects for promotion appear especially associated with poor perceived health. Other factors often associated with poor perceived health included young age at the first job and work hours that disrupt sleep rhythms (especially for women). Conclusion  Our results show that this population of workers is especially vulnerable from the point of view of perceived physical and psychological health and is exposed to strong physical, organisational and psychosocial constraints at work. They also demonstrate that poor perceived health is associated with some psychosocial (such as high psychological demand and insufficient resources) and organisational factors at work. These results, in conjunction with those from other disciplines involved in studying this industry, may help the companies to develop preventive activities.  相似文献   
46.
Depression has received increasing attention as a significant public health issue over the past ten years, both in Canada and elsewhere in the industrialized west. During the same period, many of the social and economic policies adopted by governments in these jurisdictions have reflected neoliberal goals and orientations. The purpose of this article is to explore the points of contact between these two features of contemporary social and political life in the industrialized west, using the Canadian province of British Columbia as an empirical site. My analysis draws on the Foucauldian literature on governmentality in presenting a close reading of provincial government documents concerned with depression and mental health literacy that have been produced since the election of the Liberal Party to office in British Columbia in 2001. This analysis identifies discourses of “responsibilization” circulating in these documents, within which individuals, families, communities and workplaces – rather than publicly-funded services – appear as key resources in responding to experiences of mental distress. It also points to a number of strategies visible in the documents that work to align the interests of individuals and their practitioners in pursuing particular approaches to treatment with a governing interest in reducing public spending on services and supports. The article concludes by identifying a number of resistive discourses and proposing further research in a range of empirical contexts within which they may be evident.  相似文献   
47.
口腔门诊治疗并发晕厥106例回顾分析   总被引:2,自引:0,他引:2  
目的:通过对1983年以来,孝感市中心医院口腔中心门诊治疗并发晕厥106例的回顾性分析,探讨口腔门诊治疗并发单纯性晕厥的原因及一些相关因素,增强医患双方的防治意识,安全顺利的进行口腔门诊治疗。方法:对106例单纯性晕厥反应,采取现场询问式调查的方法,对其一般情况,口腔门诊治疗经历,治疗时的心态,口腔门诊治疗的了解,以及不同口腔治疗晕厥发生情况等进行调查、归纳、分析。结果:1)晕厥的发生与患者的年龄有关,12~40岁口腔门诊治疗经历欠缺的患者是口腔门诊治疗并发晕厥的高危人群。2)口腔患者进行治疗前心理准备充足与否对并发晕厥反应的影响较大。3)晕厥在口腔门诊某些治疗中发生率较高,拔牙术最多,其次为脓肿切排。86%(92例)属因畏惧疼痛导致紧张而诱发的血管抑制性晕厥。4)晕厥多发生于治疗初期(93:13)。结论:口腔门诊治疗并发晕厥临床表现多不严重,但对患者就诊和医师的治疗影响明显,切实做好口腔治疗错误信息,消除和减轻他们的疑虑和畏惧的紧张心情,对保障口腔门诊治疗安全尤为重要。  相似文献   
48.
A previous study found that 86 per cent of employees (n = 111) who experience stress in the workplace and sought help from their workplace counselling schemes (Employee Assistance Programmes) had serious mental health problems, but the low participation rate (24 per cent) restricted generalizability and the measure used [General Health Questionnaire (GHQ‐12)] did not allow diagnosis. The present study (n = 58) improved the participation rate to 35 per cent and used a different version of the original measure (GHQ‐28) that allowed diagnostic differentiation as well as validation of the original findings. This new study found almost exactly the same high levels of mental health problems existed (86 per cent) in employees who remained at their work and that participants had higher rates of anxiety than depression. This finding is at variance with the usual co‐morbid presentation of anxiety and depression found in community based mental health services and suggests that depression may be an important differentiating factor between those who can remain at work and use counselling and those who cannot. There are implications for those who provide mental health services. The results of this study further reinforce the suggestion that workplace stress may be yet another name for common mental health problems that require professional help and treatment. Copyright © 2005 John Wiley & Sons, Ltd.  相似文献   
49.
实习期医学生心理健康状况、应对方式及压力状况的调查   总被引:2,自引:1,他引:1  
目的探讨实习期医学生心理健康状况、应对方式及压力状况。方法将进入临床实习期的364名临床医学生作为研究组,而选取379名非实习期的临床医学生作为对照组,问卷评定采用症状自评量表(SCL-90)、应对方式问卷及心理身体紧张松弛测试表。结果研究组SCL-90的人际关系敏感、强迫、抑郁、焦虑、敌对因子得分显著高于对照组(t=2.25~5.17,P<0.05);与对照组相比,研究组的应对方式中解决问题因子分有显著性降低,自责、退避因子分则有显著性增高(t=-1.97~2.89,P<0.05);研究组的心理压力状况明显差于对照组,且差异具有显著性意义(χ2=56.03,P<0.05)。结论实习期的临床医学生存在不同程度的心理问题,应予以足够重视。  相似文献   
50.
This study examines the correlation between development of expressed emotion (EE) in relatives and course of illness of 99 DSM-III schizophrenic patients. Patients whose relatives were high EE at baseline and at the 2nd CFI approximately 20 months later had a poor prognosis at the very outset of the study and an unfavourable course of illness. They had a higher rehospitalisation rate, more symptoms, lower psychosocial assessment, and a poorer 2-year and even 8-year outcome. Patients from families with a fluctuating EE or a consistently low EE had better courses. Expessed emotion is therefore a valid predictor not only of symptomatic relapses, but also of other important aspects of schizophrenia. The connection between EE index and course of illness seerns not to be simply reactive or causal, but complex and non-uniform.  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