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   92290篇
  免费   9402篇
  国内免费   668篇
耳鼻咽喉   264篇
儿科学   2113篇
妇产科学   1793篇
基础医学   6052篇
口腔科学   4509篇
临床医学   17952篇
内科学   7700篇
皮肤病学   679篇
神经病学   5631篇
特种医学   966篇
外国民族医学   1篇
外科学   3785篇
综合类   8894篇
现状与发展   3篇
一般理论   93篇
预防医学   34722篇
眼科学   345篇
药学   3258篇
  102篇
中国医学   1082篇
肿瘤学   2416篇
  2024年   232篇
  2023年   2712篇
  2022年   2647篇
  2021年   5103篇
  2020年   5226篇
  2019年   4935篇
  2018年   4288篇
  2017年   4158篇
  2016年   4000篇
  2015年   3915篇
  2014年   6121篇
  2013年   8192篇
  2012年   5345篇
  2011年   5830篇
  2010年   4401篇
  2009年   4489篇
  2008年   4346篇
  2007年   4382篇
  2006年   3793篇
  2005年   2941篇
  2004年   2519篇
  2003年   2157篇
  2002年   1658篇
  2001年   1552篇
  2000年   1354篇
  1999年   956篇
  1998年   798篇
  1997年   650篇
  1996年   533篇
  1995年   370篇
  1994年   368篇
  1993年   360篇
  1992年   298篇
  1991年   250篇
  1990年   212篇
  1989年   176篇
  1988年   193篇
  1987年   126篇
  1986年   113篇
  1985年   121篇
  1984年   83篇
  1983年   59篇
  1982年   49篇
  1981年   55篇
  1980年   55篇
  1979年   40篇
  1978年   42篇
  1977年   49篇
  1976年   35篇
  1975年   38篇
排序方式: 共有10000条查询结果,搜索用时 281 毫秒
51.
突发公共卫生事件应急管理是一个全球性的课题。本文就2019年12月以来发生在中国的新型冠状病毒肺炎这一突发公共卫生事件,口腔医疗机构及其从业人员面临的相关问题进行法律层面的分析与思考,以期对口腔医疗行业应对突发公共卫生事件提供帮助和指导。  相似文献   
52.
53.
54.
55.
56.
Purpose: A statistical assessment of a disease is often necessary before resources can be allocated to any control programme. No literature on seasonal trends of gonorrhoea is available from India. Objectives: The objectives were (1) to determine, if any, seasonal trends were present in India (2) to describe factors contributing to seasonality of gonorrhoea (3) to formulate approaches for gonorrhoea control at the national level. Materials and Methods: Seasonal indices for gonorrhoea were calculated quarterly in terms of a seasonal index between 2005 and 2010. Ratio-to-moving average method was used to determine the seasonal variation. The original data values in the time-series were expressed as percentages of moving averages. Results were also analyzed by second statistical method i.e. seasonal subseries plot. Results: The seasonally adjusted average for culture-positive gonorrhoea cases was highest in the second quarter (128.61%) followed by third quarter (108.48%) while a trough was observed in the first (96.05%) and last quarter (64.85%). The second quarter peak was representative of summer vacations in schools and colleges. Moreover, April is the harvesting month followed by celebrations and social gatherings. Both these factors are associated with increased sexual activity and partner change. A trough in first and last quarter was indicative of festival season and winter leading to less patients reporting to the hospital. Conclusion: The findings highlight the immediate need to strengthen sexual health education among young people in schools and colleges and education on risk-reduction practices especially at crucial points in the calendar year for effective gonorrhoea control.  相似文献   
57.
Objective: Keyes’ two continua model is a useful concept in which mental health and mental illness exist on two separate axes. Based on this model, this study examined the prevalence and correlates of three mental health categories among older adults in China.

Methods: Cross-sectional data were derived from Wave 1 of the Study on Global AGEing and Adult Health. Participants were categorized into complete mental health (CMH), complete mental illness (CMI), and moderate mental health (MMH) groups. Multinomial logistic regressions were used.

Results: The prevalence of CMH, CMI, and MMH in China was 18%, 16%, and 66%, respectively. Being female, unmarried, younger, and feeling unhealthy were more likely to result in placement in the CMI category. Employment, education, and cognitive function were identified as important protective factors of CMH. Age, income, urban or rural residence, and physical function difficulty were associated with all three categories.

Discussion: We demonstrated the utility of the two continua model in identifying mental health needs in Chinese contexts. The findings suggest that future policy reforms and clinical interventions should establish a more comprehensive mental health category as a screening tool nationwide. The promotion of social engagement could play an important role in treating mental illness and improving positive mental health.  相似文献   

58.
59.
60.
There is a large and growing population of long-term cancer survivors. Primary care physicians (PCPs) are playing an increasingly greater role in the care of these patients across the continuum of cancer survivorship. In this role, PCPs are faced with the responsibility of managing a range of medical and psychosocial late effects of cancer treatment. In particular, the sexual side effects of treatment which are common and have significant impact on quality of life for the cancer survivor, often go unaddressed. This is an area of clinical care and research that has received increasing attention, highlighted by the presentation of this special issue on Cancer and Sexual Health. The aims of this review are 3-fold. First, we seek to overview common presentations of sexual dysfunction related to major cancer diagnoses in order to give the PCP a sense of the medical issues that the survivor may present with. Barriers to communication about sexual health issues between patient/PCPs in order are also described in order to emphasize the importance of PCPs initiating this important conversation. Next, we provide strategies and resources to help guide the PCP in the management of sexual dysfunction in cancer survivors. Finally, we discuss case examples of survivorship sexual health issues and highlight the role that a PCP can play in each of these case examples.  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