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   113287篇
  免费   6259篇
  国内免费   345篇
耳鼻咽喉   2331篇
儿科学   4728篇
妇产科学   2905篇
基础医学   13631篇
口腔科学   4502篇
临床医学   8556篇
内科学   25606篇
皮肤病学   3570篇
神经病学   9026篇
特种医学   3113篇
外国民族医学   1篇
外科学   16331篇
综合类   643篇
一般理论   43篇
预防医学   9181篇
眼科学   2453篇
药学   7568篇
中国医学   608篇
肿瘤学   5095篇
  2023年   855篇
  2022年   608篇
  2021年   3133篇
  2020年   1770篇
  2019年   3111篇
  2018年   4200篇
  2017年   2689篇
  2016年   2721篇
  2015年   2728篇
  2014年   3881篇
  2013年   5676篇
  2012年   8194篇
  2011年   9128篇
  2010年   4737篇
  2009年   3580篇
  2008年   7022篇
  2007年   7427篇
  2006年   7083篇
  2005年   7095篇
  2004年   6611篇
  2003年   6123篇
  2002年   5693篇
  2001年   2637篇
  2000年   2929篇
  1999年   2088篇
  1998年   647篇
  1997年   560篇
  1996年   457篇
  1995年   438篇
  1994年   369篇
  1993年   288篇
  1992年   610篇
  1991年   490篇
  1990年   480篇
  1989年   370篇
  1988年   361篇
  1987年   319篇
  1986年   283篇
  1985年   266篇
  1984年   187篇
  1983年   182篇
  1982年   161篇
  1981年   160篇
  1980年   130篇
  1979年   168篇
  1978年   131篇
  1974年   117篇
  1973年   89篇
  1971年   90篇
  1969年   90篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
2.
3.
Sport Sciences for Health - The practice of physical activity has been recommended during the pandemic period of COVID-19 as a way of preventing the worsening of physical and mental health. After...  相似文献   
4.
5.
6.
Journal of Immigrant and Minority Health - COVID-19 has disproportionally affected underrepresented minorities (URM) and low-income immigrants in the United States. The aim of the study is to...  相似文献   
7.
Clinical Oral Investigations - To determine the usefulness of Serum C-terminal telopeptide cross-link of type 1 collagen (sCTX) as a preoperative marker for predicting the risk of developing...  相似文献   
8.
ObjectiveThe aim of this study was to create and validate an abbreviated version of the Spanish Transsexual Voice Questionnaire for Male-to-Female Transsexuals (SvTVQMtF).SettingThe study was conducted by two referral hospitals for voice feminization surgery and by a university department of psychology and speech therapy, all in Spain.Subjects and methodsWe prospectively studied 51 male-to-female transsexuals who underwent voice feminization surgery between January 2017 and December 2018. The SvTVQMtF was completed before and after surgery, and the 10 items with the greatest variation were selected by clinical consensus of an expert panel to develop the short version of the SvTVQMtF (SvTVQMtF-10). The correlation between the total score and the score for each item on the SvTVQMtF and the SvTVQMtF-10 was studied. The internal consistency of the SvTVQMtF-10 was analysed.ResultsGood correlation (Pearson coefficient above .90) was found between the two questionnaires. A significant correlation was found between the total SvTVQMtF-10 score and the score for each item. A significant negative correlation was found between the SvTVQMtF and fundamental frequency after voice feminization surgery. Cronbach's α was .79.ConclusionThe SvTVQMtF-10 is a valid short version of the SvTVQMtF and can be used to quantify voice-related quality of life in MtF transsexuals.  相似文献   
9.
10.
The CAV-AEP annually publishes the immunisation schedule considered optimal for all children and adolescent resident in Spain, taking into account the available evidence.The 2 + 1 schedule is recommended (2, 4, and 11 months) with hexavalent vaccines (DTPa-VPI-Hib-HB) and with 13-valent pneumococcal conjugate.A 6-year booster is recommended, preferably with DTPa (if available), with a dose of polio for those who received 2 + 1 schemes, as well as vaccination with Tdpa in adolescents and in each pregnancy, preferably between 27 and 32 weeks.Rotavirus vaccine should be systematic for all infants.Meningococcal B vaccine, with a 2 + 1 schedule, should be included in routine calendar.In addition to the inclusion of the conjugated tetravalent meningococcal vaccine (MenACWY) at 12 years of age with catch up to 18 years, inclusive, the CAV recommends this vaccine to be also included at 12 months of age, replacing MenC. Likewise, it is recommended in those over 6 weeks of age with risk factors or who travel to countries with a high incidence of these serogroups.Two-dose schedules for triple viral (12 months and 3-4 years) and varicella (15 months and 3-4 years) will be used. The second dose could be applied as a tetraviral vaccine.Universal systematic vaccination against HPV is recommended, regardless of gender, preferably at 12 years, and greater effort should be made to improve coverage. The 9 genotype extends coverage for both genders.  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