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   2431篇
  免费   155篇
  国内免费   18篇
耳鼻咽喉   45篇
儿科学   56篇
妇产科学   56篇
基础医学   333篇
口腔科学   54篇
临床医学   170篇
内科学   640篇
皮肤病学   46篇
神经病学   86篇
特种医学   46篇
外科学   318篇
综合类   12篇
预防医学   85篇
眼科学   17篇
药学   183篇
中国医学   10篇
肿瘤学   447篇
  2023年   28篇
  2022年   52篇
  2021年   61篇
  2020年   48篇
  2019年   61篇
  2018年   64篇
  2017年   57篇
  2016年   49篇
  2015年   61篇
  2014年   75篇
  2013年   100篇
  2012年   126篇
  2011年   159篇
  2010年   86篇
  2009年   83篇
  2008年   114篇
  2007年   107篇
  2006年   101篇
  2005年   103篇
  2004年   96篇
  2003年   91篇
  2002年   95篇
  2001年   72篇
  2000年   72篇
  1999年   85篇
  1998年   32篇
  1997年   24篇
  1996年   26篇
  1995年   20篇
  1994年   14篇
  1993年   22篇
  1992年   42篇
  1991年   49篇
  1990年   53篇
  1989年   58篇
  1988年   41篇
  1987年   24篇
  1986年   28篇
  1985年   18篇
  1984年   15篇
  1983年   8篇
  1982年   8篇
  1981年   5篇
  1979年   6篇
  1974年   5篇
  1973年   5篇
  1972年   6篇
  1971年   10篇
  1970年   6篇
  1969年   7篇
排序方式: 共有2604条查询结果,搜索用时 15 毫秒
991.
992.
993.
994.
Pneumorachis rarely occurs after spreading from a contiguous site of infection or after a traumatic event. We describe an adult patient who developed sepsis and a renal abscess due to Citrobacter koseri, and computed tomographic imaging identified gas within the entire spinal canal as well as an iliopsoas abscess. This patient recovered from pneumorachis caused by disseminated infection.  相似文献   
995.
We investigated the effects of treatment with antibodies against tumor necrosis factor (TNF)-α on energy metabolism, nutritional status, serum cytokine levels in patients with Crohn’s disease (CD). Twelve patients were enrolled. Resting energy expenditure (REE) levels were measured by indirect calorimetry. Crohn’s disease activity index (CDAI) significantly decreased after treatment with anti-TNF-α therapy. Anti-TNF-α therapy did not affect REE, but respiratory quotient (RQ) significantly increased after treatment. Serum interleukin-6 levels were significantly decreased and RQ were significantly increased in high REE (≥25 kcal/kg/day) group as compared to low REE (<25 kcal/kg/day) group. In conclusion, high REE value on admission is a predictive factor for good response to treatment with anti-TNF-α antibodies in active CD patients.  相似文献   
996.
[Aim] Because painful skin tears frequently occur in older patients, the prevention of skin tears is fundamental to improve their quality of life. However, a risk assessment tool for skin tears has not been established yet in Japan. Therefore, we aimed to propose a risk scoring tool for skin tears in Japanese older adult. [Methods] We conducted a prospective cohort study with 6-month follow-up in two long-term care hospitals in Japan. A total of 257 inpatients were recruited. Patient and skin characteristics were collected at baseline, and the occurrence of forearm skin tears were examined during follow-up. To develop a risk scoring tool, we identified risk factors, and converted their coefficients estimated in the multiple logistic regression analysis into simplified scores. The predictive accuracy of the total score was evaluated. [Results] Of 244 participants, 29 developed forearm skin tears during the follow-up period, a cumulative incidence of 13.5%. Senile purpura, pseudoscar, contracture, and dry skin were identified as risk factors for skin tears. Their weighted scores were 6, 4, 5, and 6, respectively. The area under the receiver operating characteristic curve of the total score was 0.806. At a cut-off score of 12, the sensitivity was 0.86, and the specificity was 0.67. [Conclusion] Our forearm skin tear risk scoring tool showed high accuracy, whereas specificity was low. This tool can contribute to prevent forearm skin tears in Japanese older adults.  相似文献   
997.
慢性疼痛是21世纪全球的主要健康问题,不但严重影响了患者的日常生活,更加重了公共医疗的经济负担。本文阐述了慢性疼痛的概念和分类,常用的评估方法 ,以及慢性疼痛的缓解对策。指出:缓解慢性疼痛的有效对策,就是打破疼痛的恶性循环:第一步,降低疼痛级别;第二步,建立一个长期的治疗方案,包括主流治疗法和身心治疗法。  相似文献   
998.
BackgroundCompounded by the needs of an aging society, interactions between oral condition and systemic diseases may require that dentists pursue additional training in oral medicine beyond that received in dental school. The purpose of this study was to investigate whether pursuing oral medicine professional education is recognised by dental practitioners as an important factor regarding job satisfaction.MethodsA questionnaire was mailed to 1,379 dental practitioners in Japan, along with a follow-up survey to assess repeatability, in 2017. The questionnaire consisted of 19 items/questions related to the respondents’ attributes and job satisfaction (5 items), willingness to learn oral medicine (4 items), willingness to learn more about dentistry (4 items), and willingness to contribute to society (6 items). Representative questions were extracted via binomial logistic regression analysis. Multivariable logistic regression analysis was performed to assess the relationships between job satisfaction and the explanatory variables.ResultsAmongst 337 respondents, multivariable logistic regression analysis showed an association between strong job satisfaction (n = 126, 37%) and willingness to learn more about oral medicine and dentistry and contribute to society, with odds ratios (95% confidence interval) of 4.22 (1.84-9.68), 3.16 (1.16-8.62), and 7.32 (3.14-17.06) and κ values of 0.38, 0.58, and 0.51, respectively.ConclusionsOur results from dental practitioners suggest additional benefits of oral medicine professional education for future job satisfaction.  相似文献   
999.
Candida species inhabit the mucosal surfaces of healthy individuals. Major forms of oral candidiasis are pseudomembranous and atrophic form, but chronic hyperplastic candidiasis (CHC) is rarely seen. We encountered a nodule caused by candidal infection on a forearm flap in the oral cavity mimicking a recurrent tongue cancer, which revealed as CHC by histopathological examination. Like other forms of oral candidiasis, the nodule well responded to the treatment of antifungal agents and eventually disappeared. When an intraoral nodule is observed, the possibility of CHC should be taken into consideration.  相似文献   
1000.
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