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   16417篇
  免费   1800篇
  国内免费   255篇
耳鼻咽喉   117篇
儿科学   432篇
妇产科学   249篇
基础医学   1871篇
口腔科学   517篇
临床医学   2955篇
内科学   1052篇
皮肤病学   93篇
神经病学   4110篇
特种医学   163篇
外国民族医学   1篇
外科学   975篇
综合类   1700篇
现状与发展   1篇
预防医学   1235篇
眼科学   97篇
药学   1422篇
  46篇
中国医学   780篇
肿瘤学   656篇
  2024年   116篇
  2023年   460篇
  2022年   566篇
  2021年   860篇
  2020年   991篇
  2019年   839篇
  2018年   805篇
  2017年   770篇
  2016年   782篇
  2015年   675篇
  2014年   1066篇
  2013年   1409篇
  2012年   962篇
  2011年   1036篇
  2010年   772篇
  2009年   802篇
  2008年   814篇
  2007年   693篇
  2006年   647篇
  2005年   571篇
  2004年   441篇
  2003年   387篇
  2002年   326篇
  2001年   259篇
  2000年   199篇
  1999年   101篇
  1998年   133篇
  1997年   118篇
  1996年   100篇
  1995年   85篇
  1994年   75篇
  1993年   77篇
  1992年   61篇
  1991年   62篇
  1990年   64篇
  1989年   54篇
  1988年   46篇
  1987年   47篇
  1986年   48篇
  1985年   39篇
  1984年   28篇
  1983年   15篇
  1982年   16篇
  1981年   9篇
  1980年   13篇
  1979年   5篇
  1977年   4篇
  1976年   7篇
  1975年   4篇
  1974年   7篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
PTSD症状自评量表的信效度初步评价   总被引:9,自引:6,他引:9  
目的:编制创伤后应激障碍症状自评量表。方法:根据诊断标准和Kubany的痛苦事件量表相结合来编制量表;在284名大学生、87名受灾居民和70名消防官兵中进行信度和效度检验。结果:量表的一致性系数为0.88-0.94,重测信度为0.83-0.88,与SCL90的焦虑、抑郁和恐怖因子的相关性在0.73以上,与DSM-IV的诊断符合率在90%以上。结论:量表有很好的信效度.可以用于评估创伤后应激障碍的症状及其严重程度。  相似文献   
82.
Brain Research Institute, All-Union Mental Health Research Center, Academy of Medical Sciences of the USSR, Moscow. (Presented by Academician of the Academy of Medical Sciences of the USSR O. S. Adrianov.) Translated from Byulleten' Éksperimental'noi Biologii i Meditsiny, Vol. 107, No. 5, pp. 586–587, May, 1989.  相似文献   
83.
Psychological features and complaints of persons presenting to medical settings with heart-focused anxiety and noncardiac chest pain are poorly understood. Comparing 20 healthy heart-anxious patients to cardiac and surgical inpatients and nonpatient controls, we found that healthy heart-anxious patients (a) were as afraid of chest pain and heart palpitations as inpatients with heart disease, (b) were as incapacitated by symptoms and using medical services as much as both inpatient groups; and (c) reported higher levels of cardiac disease conviction, heart awareness, and behaviors designed to protect their heart than surgical patients and nonpatients. Compared to all other groups, healthy heart-anxious patients reported more panic and other anxiety disorders, hypochondriacal beliefs, physical symptoms, obsessive-compulsive concerns, and negative affect. Following a hyperventilation test, heart-anxious patients also indicated more distressing symptoms and thoughts, and felt less safe and in control than surgical patients and nonpatients. Results support efforts for a timely recognition, diagnosis, and behavioral treatment of persons with heart-focused anxiety.  相似文献   
84.
原发性肝癌患者抑郁症状与不成熟防御机制的关系   总被引:7,自引:0,他引:7  
目的:了解原发性肝癌(PLC)患者的抑郁症状和不成熟防御机制(IDM)的水平,探讨PLC患者的抑郁症状与IDM的关系。方法:采用流调用抑郁自评量表(CES-D)和防御式方式问卷(DSQ)对PLC患者和健康组各100例进行调查。结果:1)PLC患者中49%可能或肯定有抑郁症状,其中23%肯定有抑郁症状,其发生率高于健康组;2)PLC组的CES-D总分高于健康组;3)PLC组比健康组采用较多分裂和潜意显现机制,采用较少抱怨机制;4)肯定有抑郁症状者比无抑郁症状者采用较多IDM;5)两组CES-D总分与IDM均分呈显著正相关,Pearson r为0.473-0.776,其中PLC组为0.473。结论:抑郁症状是PLC患者常见的负性情绪,医护人员应引起重视,并指导患者采用成熟的防御机制代替不成熟防御机制,预防并减轻患者的抑郁症状,以提高患者的生活质量。  相似文献   
85.
目的:探讨以头晕为主诉的无症状性脑梗死(ACI)患者的情绪状态及临床体验并观察抗焦虑/抑郁治疗的疗效.方法:对98例ACI患者采用汉密尔顿焦虑抑郁量表进行筛查,并根据ICD-10的诊断标准做出诊断后,给予抗焦虑/抑郁药物治疗和支持性心理治疗,以治疗前后的汉密尔顿焦虑量表(HAMA)的减分率和临床症状缓解程度来评定疗效.结果:处于焦虑状态的ACI患者,医检证实均有脑血管系统的轻微病损,头晕史0.5~7年,有心悸、气短、眩晕发作、失眠等自诉躯体症状,67.55%伴有高血压;经帕罗西汀和支持性心理治疗,100%显效,临床症状缓解.结论:以头晕为主诉的ACI患者,若经改善脑血流循环治疗无效者,则应实施抗焦虑/抑郁药物治疗和支持性心理治疗,可望获得良好疗效.  相似文献   
86.
Summary The present study was designed to investigate the relationships between premenstrual symptomatology, locus of control, anxiety, and depression in women with normal menstrual cycles. Sixty-nine female participants completed a survey, comprised of the Menstrual Distress Questionnaire (MDQ; Moos, 1968), Levenson's (1981) locus of control scales, the Depression Anxiety Stress Scale (DASS; Lovibond and Lovibond, 1995), and a questionnaire constructed by the researchers based on the DSM-IV criteria for Premenstrual Dysphoric Disorder (PMDD). Both overall and specific subtypes of premenstrual symptomatology were found to correlate with external locus of control, anxiety, and depression. In addition, locus of control was found to moderate the relationship between premenstrual symptomatology, anxiety and depression. Finally, women who were in the premenstrual phase when completing the questionnaire scored significantly lower on the internal scale than those in either the follicular or early luteal phases. It was concluded that an external locus of control may be associated with a susceptibility to depression or anxiety when certain premenstrual or postmenstrual changes are experienced. Received August 10, 2002; accepted January 12, 2003 Published online February 19, 2003 Abbreviations · ANOVA · Analysis of variance · DASS · Depression anxiety stress scale · LOC · Locus of control · MANOVA · Multivariate analysis of variance · MDQ · Menstrual distress questionnaire · PMDD · Premenstrual dysphoric disorder · PMS · Premenstrual syndrome Acknowledgement The authors would like to thank John Reece, Department of Psychology and Disability Studies, RMIT University, Melbourne, Australia, for assistance with data analysis. Correspondence: Dr. Andrew Francis, Department of Psychology and Disability Studies, Faculty of Applied Science, RMIT University, P.O. Box 71, Bundoora, Victoria 3083, Australia; e-mail: andrew.francis@rmit.edu.au  相似文献   
87.
Self-report symptoms of anxiety are widely used in mental health and social science research as an index of current psychiatric state. Previous twin studies have suggested that genetic factors account for a significant proportion of the variance in these symptoms. To replicate and extend these findings, we examined self-report symtoms of panic-phobia and somatization in the “Virginia 30,000” twin-family sample. Model fitting applied to 80 unique relationships in the twin-family pedigree produced the following major results: (i) genetic effects were significant for both symptom factors, accounting for between 25 and 49% of the total variance, with the exception of symptoms of panic-phobia in females, where they accounted for 15–16% of the variance; (ii) familial environmental effects were absent for symptoms of somatization, while for symptoms of panic-phobia they accounted for a very small proportion of variance in males (≤1.2%) and a modest proportion in females (6–17%) (iii) spousal correlations were present for both factors, ranging from +0.05 to +0.20; (iv) genetic factors which influenced symptoms were generally the same in males and females, although their effect was greater in males; (v) heritability estimates were lower in the population-based than in the volunteer sample; and (vi) when test-retest reliability was included in the model, results suggest that genetic factors account for at least half of the stable variance for all symptom factors, except panic-phobia in females. Our results support the validity of previous twin studies of self-report symptoms of anxiety and suggest that genetic factors significantly influence these symptoms but familial-environmental factors play little or no etiologic role.  相似文献   
88.
Life in the Future Versus Life in the Present   总被引:1,自引:0,他引:1  
Roemer and Orsillo have provided an integrative perspective for developing more effective therapies for generalized anxiety disorder, based on existing knowledge about the disorder, cognitive behavioral approaches to its treatment, and conceptualizations and treatment methods from the acceptance/mindfulness tradition. The present commentary expands upon the notion of the adaptive value of focused attention on present-moment experience and cognitive perspectives that can facilitate that process.  相似文献   
89.
广泛性焦虑障碍(GAD)是普遍存在于焦虑症患者之中的基础焦虑障碍,担忧是其核心特征。在众多担忧理论之中,Wells的元认知理论是目前最有效地解释GAD的理论。由该理论发展而来的担忧量表对GAD的鉴别及诊断都显示了很好的信度和效度。  相似文献   
90.
The review by Cook and Blacher (2007 ) suggests that behavior therapy for tic disorders is indeed efficacious. Given the empirical support for these treatments, researchers should begin to place effort on examining various strategies for treatment dissemination. The current article addresses possible barriers to dissemination, focusing specifically on various concerns that have been raised by many medical and psychological care providers. The validity of these concerns is examined in the context of existing data. In addition, limitations of the current literature and future directions for research are discussed.  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