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   2462604篇
  免费   178967篇
  国内免费   6518篇
耳鼻咽喉   34498篇
儿科学   77841篇
妇产科学   69275篇
基础医学   353456篇
口腔科学   70617篇
临床医学   225695篇
内科学   474972篇
皮肤病学   52547篇
神经病学   201001篇
特种医学   93398篇
外国民族医学   782篇
外科学   361418篇
综合类   55202篇
现状与发展   7篇
一般理论   898篇
预防医学   192899篇
眼科学   56655篇
药学   184765篇
  10篇
中国医学   5575篇
肿瘤学   136578篇
  2018年   25684篇
  2017年   19910篇
  2016年   21704篇
  2015年   24736篇
  2014年   34388篇
  2013年   53085篇
  2012年   71339篇
  2011年   75665篇
  2010年   44487篇
  2009年   41770篇
  2008年   70858篇
  2007年   76071篇
  2006年   76526篇
  2005年   74106篇
  2004年   71298篇
  2003年   68408篇
  2002年   66771篇
  2001年   111930篇
  2000年   115457篇
  1999年   97509篇
  1998年   27021篇
  1997年   24580篇
  1996年   23886篇
  1995年   22593篇
  1994年   21157篇
  1993年   19748篇
  1992年   76751篇
  1991年   74852篇
  1990年   73164篇
  1989年   70393篇
  1988年   65400篇
  1987年   64168篇
  1986年   61483篇
  1985年   58447篇
  1984年   43793篇
  1983年   37479篇
  1982年   22528篇
  1981年   20233篇
  1979年   41252篇
  1978年   29468篇
  1977年   24892篇
  1976年   23458篇
  1975年   25420篇
  1974年   30544篇
  1973年   29774篇
  1972年   28117篇
  1971年   26208篇
  1970年   24644篇
  1969年   23114篇
  1968年   21872篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
82.
ContextIt is especially important that patients are well informed when making high-stakes, preference-sensitive decisions like those on the Physician Orders for Life-Sustaining Treatment (POLST) form. However, there is currently no way to easily evaluate whether patients understand key concepts when making these important decisions.ObjectivesTo develop a POLST knowledge survey.MethodsExpert (n = 62) ratings of key POLST facts were used to select items for a POLST knowledge survey. The survey was administered to nursing facility residents (n = 97) and surrogate decision-makers (n = 112). A subset (n = 135) were re-administered the survey after a standardized advance care planning discussion to assess the scale's responsiveness to change.ResultsThe 19-item survey demonstrated adequate reliability (α = 0.72.). Residents' scores (x = 11.4, standard deviation 3.3) were significantly lower than surrogate scores (x = 14.7, standard deviation 2.5) (P < 0.001). Scores for both groups increased significantly after administration of a standardized advance care planning discussion (P < 0.001). Although being a surrogate, age, race, education, cognitive functioning, and health literacy were significantly associated with higher POLST Knowledge Survey scores in univariate analyses, only being a surrogate (P < 0.001) and being white (P = 0.028) remained significantly associated with higher scores in multivariate analyses.ConclusionThe 19-item POLST Knowledge Survey demonstrated adequate reliability and responsiveness to change. Findings suggest the survey could be used to identify knowledge deficits and provide targeted education to ensure adequate understanding of key clinical decisions when completing POLST.  相似文献   
83.
84.
85.
86.
Nevo  N.  Goldstein  A. L.  Staierman  M.  Eran  N.  Carmeli  I.  Rayman  S.  mnouskin  Y. 《Hernia》2022,26(6):1491-1499
Hernia - The minimally invasive surgical repair of combined inguinal and ventral hernias often requires shifting from one approach or plane to another. The traditional enhanced-view totally...  相似文献   
87.

Researchers have highlighted numerous sociocultural factors that have been shown to underpin human appearance enhancement practices, including the influence of peers, family, the media, and sexual objectification. Fewer scholars have approached appearance enhancement from an evolutionary perspective or considered how sociocultural factors interact with evolved psychology to produce appearance enhancement behavior. Following others, we argue that evidence from the field of evolutionary psychology can complement existing sociocultural models by yielding unique insight into the historical and cross-cultural ubiquity of competition over aspects of physical appearance to embody what is desired by potential mates. An evolutionary lens can help to make sense of reliable sex and individual differences that impact appearance enhancement, as well as the context-dependent nature of putative adaptations that function to increase physical attractiveness. In the current review, appearance enhancement is described as a self-promotion strategy used to enhance reproductive success by rendering oneself more attractive than rivals to mates, thereby increasing one’s mate value. The varied ways in which humans enhance their appearance are described, as well as the divergent tactics used by women and men to augment their appearance, which correspond to the preferences of opposite-sex mates in a heterosexual context. Evolutionarily relevant individual differences and contextual factors that vary predictably with appearance enhancement behavior are also discussed. The complementarity of sociocultural and evolutionary perspectives is emphasized and recommended avenues for future interdisciplinary research are provided for scholars interested in studying appearance enhancement behavior.

  相似文献   
88.
89.
The Yakima Valley Farm Workers Clinic (YVFWC) is one of the largest community health centers in the country with clinics throughout south-central Washington and northern Oregon. Its dental program consists of 14 dental clinics providing general and specialty services to the low-income populations it serves. Modeling itself after the YVFWC medical managed care program; the Dental program recently added value-based metrics to its dental practice after Oregon offered a value-based dental reimbursement plan in 2019. This is the first-step YVFWC's dental program that has taken to prepare for value-based reimbursement and transform its dental practice in order to reduce the disease burden in its patient population. The purpose of this article is to describe the processes YVFWC undertook to prepare itself for the new reimbursement model, which included the development of metrics, a metric validation process, a clinical dashboard, and a method for improving metrics. It also outlines its medical/dental integration improvement brought about by embedding hygienists into the medical primary care teams.  相似文献   
90.
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