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   26042篇
  免费   1135篇
  国内免费   76篇
耳鼻咽喉   221篇
儿科学   910篇
妇产科学   714篇
基础医学   2868篇
口腔科学   306篇
临床医学   4692篇
内科学   4312篇
皮肤病学   282篇
神经病学   2531篇
特种医学   507篇
外国民族医学   1篇
外科学   2394篇
综合类   234篇
一般理论   40篇
预防医学   3629篇
眼科学   352篇
药学   1503篇
  2篇
中国医学   33篇
肿瘤学   1722篇
  2024年   55篇
  2023年   172篇
  2022年   263篇
  2021年   486篇
  2020年   349篇
  2019年   552篇
  2018年   658篇
  2017年   455篇
  2016年   517篇
  2015年   537篇
  2014年   787篇
  2013年   1258篇
  2012年   1851篇
  2011年   1943篇
  2010年   1038篇
  2009年   904篇
  2008年   1772篇
  2007年   1929篇
  2006年   1821篇
  2005年   1744篇
  2004年   1639篇
  2003年   1557篇
  2002年   1500篇
  2001年   172篇
  2000年   152篇
  1999年   234篇
  1998年   300篇
  1997年   245篇
  1996年   195篇
  1995年   224篇
  1994年   180篇
  1993年   172篇
  1992年   110篇
  1991年   117篇
  1990年   105篇
  1989年   89篇
  1988年   85篇
  1987年   78篇
  1986年   76篇
  1985年   77篇
  1984年   106篇
  1983年   98篇
  1982年   122篇
  1981年   113篇
  1980年   96篇
  1979年   42篇
  1978年   62篇
  1977年   46篇
  1976年   41篇
  1975年   30篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
Journal of Neurology - With the explosion of COVID-19 globally, it was unclear if people with Parkinson’s disease (PD) were at increased risk for severe manifestations or negative outcomes....  相似文献   
72.

The aims of this study were to investigate stability of problem gambling between 20 and 24 years of age, and the antecedents and consequences of problem gambling at age 20 years. Young adult participants in the Avon Longitudinal Study of Parents and Children (ALSPAC) completed computer-administered gambling surveys on paper, or online. Responses to the Problem Gambling Severity Index (PGSI) were complete for 2624 participants at 20 years, and 1921 participants at 24 years. Responses were categorized into ‘non-problem’ (71–78%), ‘low-risk gambling’ (16–21%), ‘moderate-risk gambling’ (4–5.5%), and ‘problem gambling’ (1–1.5%). The overall frequency of moderate-risk/problem gambling varied little between age 20 and 24 years, and scratch cards, online betting and gambling were the most frequent activities. Problem gamblers at age 20 years had a history of hyperactivity and conduct problems in adolescence, high sensation seeking, and an external locus of control. They were more likely to have mothers who had problems with gambling, reported less parental supervision, and higher social media usage. Moderate-risk/problem gambling at age 20 years was associated with regular cigarette smoking, high levels of illicit drug use, and problematic use of alcohol at age 24 years. A significant minority of young adults (mainly males) showed problem gambling behaviours which appeared to be established by the age of 20 years and were associated with other potentially addictive behaviours.

  相似文献   
73.
International Urology and Nephrology - The rehabilitation of post-prostatectomy urinary incontinence has traditionally focused on pelvic floor strengthening exercise. The goal of this study was to...  相似文献   
74.

Background

Foot pain is common amongst the general population and impacts negatively on physical function and quality of life. Associations between personal health characteristics, lifestyle/behaviour factors and foot pain have been studied; however, the role of wider determinants of health on foot pain have received relatively little attention. Objectives of this study are i) to describe foot pain and foot health characteristics in an educated population of adults; ii) to explore associations between moderate-to-severe foot pain and a variety of factors including gender, age, medical conditions/co-morbidity/multi-morbidity, key indicators of general health, foot pathologies, and social determinants of health; and iii) to evaluate associations between moderate-to-severe foot pain and foot function, foot health and health-related quality-of-life.

Methods

Between February and March 2018, Glasgow Caledonian University Alumni with a working email address were invited to participate in the cross-sectional electronic survey (anonymously) by email via the Glasgow Caledonian University Alumni Office. The survey was constructed using the REDCap secure web online survey application and sought information on presence/absence of moderate-to-severe foot pain, patient characteristics (age, body mass index, socioeconomic status, occupation class, comorbidities, and foot pathologies). Prevalence data were expressed as absolute frequencies and percentages. Multivariate logistic and linear regressions were undertaken to identify associations 1) between independent variables and moderate-to-severe foot pain, and 2) between moderate-to-severe foot pain and foot function, foot health and health-related quality of life.

Results

Of 50,228 invitations distributed, there were 7707 unique views and 593 valid completions (median age [inter-quartile range] 42 [31–52], 67.3% female) of the survey (7.7% response rate). The sample was comprised predominantly of white Scottish/British (89.4%) working age adults (95%), the majority of whom were overweight or obese (57.9%), and in either full-time or part-time employment (82.5%) as professionals (72.5%). Over two-thirds (68.5%) of the sample were classified in the highest 6 deciles (most affluent) of social deprivation. Moderate-to-severe foot pain affected 236/593 respondents (39.8%). High body mass index, presence of bunions, back pain, rheumatoid arthritis, hip pain and lower occupation class were included in the final multivariate model and all were significantly and independently associated with moderate-to-severe foot pain (p?<?0.05), except for rheumatoid arthritis (p?=?0.057). Moderate-to-severe foot pain was significantly and independently associated lower foot function, foot health and health-related quality of life scores following adjustment for age, gender and body mass index (p?<?0.05).

Conclusions

Moderate-to-severe foot pain was highly prevalent in a university-educated population and was independently associated with female gender, high body mass index, bunions, back pain, hip pain and lower occupational class. Presence of moderate-to-severe foot pain was associated with worse scores for foot function, foot health and health-related quality-of-life. Education attainment does not appear to be protective against moderate-to-severe foot pain.
  相似文献   
75.
76.
Journal of Neuro-Oncology - For decisions on glioblastoma surgery, the risk of complications and decline in performance is decisive. In this study, we determine the rate of complications and...  相似文献   
77.
78.
Breast Cancer Research and Treatment - The majority of breast cancers are estrogen receptor (ERα) positive making endocrine therapy a mainstay for these patients. Unfortunately, resistance to...  相似文献   
79.
Weißer  Linda  Finke  Isabelle  Arndt  Volker 《Der Onkologe》2021,27(5):509-510
Die Onkologie - Ein Erratum zu dieser Publikation wurde veröffentlicht: https://doi.org/10.1007/s00761-021-00929-4  相似文献   
80.
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