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   162148篇
  免费   10390篇
  国内免费   668篇
耳鼻咽喉   1829篇
儿科学   6147篇
妇产科学   2757篇
基础医学   21050篇
口腔科学   3302篇
临床医学   14995篇
内科学   33082篇
皮肤病学   2594篇
神经病学   14275篇
特种医学   4975篇
外国民族医学   1篇
外科学   23600篇
综合类   2927篇
现状与发展   1篇
一般理论   173篇
预防医学   12751篇
眼科学   4723篇
药学   12670篇
  2篇
中国医学   631篇
肿瘤学   10721篇
  2023年   926篇
  2022年   1992篇
  2021年   3941篇
  2020年   2277篇
  2019年   3355篇
  2018年   4161篇
  2017年   3018篇
  2016年   3684篇
  2015年   4041篇
  2014年   5884篇
  2013年   7749篇
  2012年   11520篇
  2011年   12077篇
  2010年   6766篇
  2009年   6036篇
  2008年   10025篇
  2007年   10544篇
  2006年   9941篇
  2005年   9761篇
  2004年   9196篇
  2003年   8367篇
  2002年   7921篇
  2001年   1963篇
  2000年   1594篇
  1999年   1811篇
  1998年   1710篇
  1997年   1435篇
  1996年   1165篇
  1995年   1128篇
  1994年   951篇
  1993年   916篇
  1992年   1012篇
  1991年   941篇
  1990年   897篇
  1989年   829篇
  1988年   789篇
  1987年   724篇
  1986年   655篇
  1985年   726篇
  1984年   735篇
  1983年   641篇
  1982年   765篇
  1981年   685篇
  1980年   603篇
  1979年   476篇
  1978年   417篇
  1977年   435篇
  1976年   355篇
  1975年   329篇
  1974年   333篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
Treatment guidelines for management of uncomplicated gonorrhoeae have been recently modified owing to alarming upsurge in azithromycin resistance. This study investigated the prevalence and genetic determinants of gonococcal azithromycin resistance in India. Four (5.7%) of 70 gonococcal isolates were resistant to azithromycin. Of 16 isolates investigated for molecular mechanisms of resistance, 13 (81.3%) and 6 (37.5%) isolates exhibited mutations in coding and promoter regions of mtrR gene, respectively. However, ermA, ermB and ermC genes or mutations in rrl gene were absent in all isolates. Azithromycin resistance is low in India posing no immediate threat to use of dual-therapy for syndromic management.  相似文献   
2.
3.
4.
5.
6.
We report a case of benign lymphoplasmacytic plaque (LPP) in a child. These asymptomatic erythematous papulonodular lesions are an emerging clinicopathological entity. Herein, we describe a previously unreported site for LPP lesions, namely, the volar wrist and the distal ipsilateral palm.  相似文献   
7.

Objectives

To determine: (i) the behaviour change techniques used by a sample of Australian physiotherapists to promote non-treatment physical activity; and (ii) whether those behaviour change techniques are different to the techniques used to encourage adherence to rehabilitation exercises.

Design

Cross-sectional survey.

Method

An online self-report survey was advertised to private practice and outpatient physiotherapists treating patients with musculoskeletal conditions. The use of 50 behaviour change techniques were measured using five-point Likert-type scale questions.

Results

Four-hundred and eighty-six physiotherapists responded to the survey, with 216 surveys fully completed. Most respondents (85.1%) promoted non-treatment physical activity often or all of the time. Respondents frequently used 29 behaviour change techniques to promote non-treatment physical activity or encourage adherence to rehabilitation exercises. A similar number of behaviour change techniques was frequently used to encourage adherence to rehabilitation exercises (n = 28) and promote non-treatment physical activity (n = 26). Half of the behaviour change techniques included in the survey were frequently used for both promoting non-treatment physical activity and encouraging adherence to rehabilitation exercises (n = 25). Graded tasks was the most, and punishment was the least, frequently reported technique used to promote non-treatment physical activity and encourage adherence to rehabilitation exercises.

Conclusions

Respondents reported using similar behaviour change techniques to promote non-treatment physical activity and encourage adherence to rehabilitation exercises. The variability in behaviour change technique use suggests the behaviour the physiotherapist is promoting influences their behaviour change technique choice. Including the frequently-used behaviour change techniques in non-treatment physical activity promotion interventions might improve their efficacy.  相似文献   
8.
9.
We report two British cases of liver abscess, due to Klebsiella pneumoniae and associated with synchronous infection elsewhere, which required liver resection for definitive treatment. They illustrate the geographic spread of aggressive K pneumoniae liver infection and demonstrate the importance of early aggressive treatment.  相似文献   
10.
Pediatric trachyonychia is an acquired nail disease that can cause distress to families. It is a poorly understood disease, and long‐term follow‐up data are lacking. We present an institutional review of 11 children with isolated pediatric trachyonychia followed over time. Children with the diagnosis of pediatric trachyonychia were identified and invited to participate. Pictures were taken on follow‐up and a questionnaire was answered. Exclusion criteria include having another diagnosis at the initial visit that causes nail dystrophy. Eleven patients with the diagnosis of pediatric trachyonychia were available for follow‐up. The mean age of appearance was 2.7 years (range 2–7 yrs) and the average follow‐up was 66 months (range 10–126 mos). Nine patients were treated with potent topical corticosteroids, one used only petrolatum, and one took vitamin supplements. One patient was found to have an additional skin and hair diagnosis of alopecia areata on follow‐up. On follow‐up, 82% noted improvement of the nails, whereas 18% noted no change. A majority of cases of pediatric trachyonychia are isolated and improve with time, regardless of treatment.  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