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   207024篇
  免费   47246篇
  国内免费   2254篇
耳鼻咽喉   2559篇
儿科学   7215篇
妇产科学   1898篇
基础医学   28701篇
口腔科学   11341篇
临床医学   22475篇
内科学   36708篇
皮肤病学   5892篇
神经病学   23537篇
特种医学   8177篇
外国民族医学   38篇
外科学   24361篇
综合类   16932篇
现状与发展   10篇
一般理论   12篇
预防医学   14149篇
眼科学   2914篇
药学   18578篇
  161篇
中国医学   10992篇
肿瘤学   19874篇
  2024年   329篇
  2023年   1529篇
  2022年   2798篇
  2021年   5216篇
  2020年   9835篇
  2019年   14214篇
  2018年   13620篇
  2017年   15105篇
  2016年   14578篇
  2015年   14191篇
  2014年   17007篇
  2013年   19465篇
  2012年   16350篇
  2011年   16711篇
  2010年   14366篇
  2009年   10201篇
  2008年   10236篇
  2007年   8930篇
  2006年   8307篇
  2005年   7523篇
  2004年   6789篇
  2003年   6079篇
  2002年   5492篇
  2001年   4310篇
  2000年   2910篇
  1999年   1473篇
  1998年   1073篇
  1997年   974篇
  1996年   845篇
  1995年   728篇
  1994年   695篇
  1993年   578篇
  1992年   475篇
  1991年   441篇
  1990年   322篇
  1989年   317篇
  1988年   300篇
  1987年   260篇
  1986年   241篇
  1985年   311篇
  1984年   233篇
  1983年   168篇
  1982年   219篇
  1981年   165篇
  1980年   155篇
  1979年   137篇
  1978年   73篇
  1977年   66篇
  1976年   55篇
  1975年   34篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
2.
BackgroundThe aim of this study was to estimate the prevalence of dental prosthetic treatment and to investigate the demographic, social, economic and medical factors associated with the use of fixed and removable dentures in a representative sample of adults living in France.MethodsThe data were obtained from the 2002–2003 Decennial Health Survey, a cross-sectional study of a representative sample of the population living in France, which included 29,679 adults. Information was collected by interview. The variables collected were fixed denture, removable denture, age, gender, number of children, area of residence, nationality, educational attainment, family social status, employment status, annual household income per capita, supplementary insurance, chronic disease, eyesight problems/glasses, hearing problems/hearing aids. Multinomial logistic regression models were used to study the relationship between prosthetic treatment and demographic, socioeconomic and medical characteristics unadjusted, adjusted for age and adjusted for all the characteristics.ResultsThe prevalence of prosthetic treatment was 34.6% (95% confidence interval (CI): [34.1; 35.2]) for fixed prosthetic dentures and 13.8% (95% CI: [13.4; 14.2]) for removable prosthetic dentures. We showed a gradient between educational attainment and removable dentures; the odds ratio adjusted for all the variables (aOR) associated with no or primary education compared to post-secondary education was 2.56; 95% CI: [2.09; 3.13]. When annual household income per capita was low, subjects were less likely to report fixed dentures (aOR = 0.68; 95% CI: [0.62; 0.75]) than those with high annual household income per capita. Individuals without insurance less often reported fixed dentures than those with private insurance. Those reporting chronic disease were less likely to report fixed dentures (aOR = 0.87; 95% CI: [0.79; 0.95]) but more likely to report removable dentures (aOR = 1.29; 95% CI: [1.17; 1.43]) than those without chronic disease.ConclusionThis study reveals social, economic and medical inequalities in fixed and removable prosthetic treatment among adults in France.  相似文献   
3.
4.
全膝关节置换术是目前治疗终末期膝关节骨性关节炎最有效的方法之一,全膝关节置换术后膝关节功能、术后膝关节疼痛与术后下肢力线有着密切的关系。目前膝关节置换术下肢对线方式主要采用机械力学对线方法,该方法可以改善膝关节功能,但是有部分患者也会产生术后膝关节的疼痛、活动受限等并发症,导致术后患者满意度较差。近些年越来越多的研究开始关注运动力学对线技术并应用于临床。运动学对线技术旨在重建患者的解剖结构,将膝关节假体运动轴与膝关节生理性运动轴保持一致,减少膝关节周围软组织和韧带的松解,实现膝关节生理性运动。该文就运动力学对线方法在全膝关节置换术中的应用进展作一综述。  相似文献   
5.
Although depression is associated to physical discomfort, meanings of the body in depression are rarely addressed in clinical research. Drawing on the concept of the lived body, this study explores depression as an embodied phenomenon. Using a hermeneutic phenomenological approach, the analysis of narrative‐based interviews with 11 depressed adults discloses a thematic structure of an embodied process of an ambiguous striving against fading. Five subthemes elicit different dimensions of this process, interpreted as disabling or enabling: feeling estranged, feeling confined, feeling burdensome, sensing life and seeking belongingness. In relation to clinical practice, we suggest that the interdisciplinary team can focus on enhancing the enabling dimensions, for example through guided physical activities to support the patient to feel more alive, capable and connected. Moreover, we suggest that the treatment process benefits from an increased awareness of the ambiguity in the patient's struggle, acknowledging both destructive and recharging elements of the withdrawing, and the perceived conflict in‐between.  相似文献   
6.
Problem: Although efficacy studies of opioid maintenance treatment (OMT) have shown evidence of treatment benefits, there is still need for studies on its effectiveness in natural clinical processes. This study investigates the development in health, substance use and social conditions of those who applied for OMT, including those denied access or discharged.

Method: First, persons assessed for admittance in 2005–2011 (n?=?127) were categorized into four trajectory groups based on whether they were admitted or denied (n?=?19), discharged (n?=?31), readmitted (n?=?21) or had been undergoing OMT without interruption (n?=?56). Second, 99 of these, the analytical sample, were interviewed at follow-up using (a) the Addiction Severity Index (ASI) for seven problem-areas and housing, and (b) self-rated change in 11 problem areas. The ASI was compared to baseline interviews after 55 months (mean). Third, outcomes within groups was studied in relation to alternative interventions.

Results: Within the analytical sample, those denied OMT showed no improvements at group level, those discharged had some improvements, more if readmitted than if not and those with uninterrupted OMT showed the most comprehensive improvements. Those outside OMT, denied and discharged, had considerable mortality risks related to ongoing drug use, especially in lack of well-planned alternative interventions.

Conclusion: Improvements strongly relate to access to OMT. This study underscores that access to OMT improves the situation in all areas investigated and decreases the risk for drug-related death. It underscores the importance of two major risk situations, i.e. being denied OMT and being discharged.  相似文献   

7.
8.
9.
10.
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