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   536560篇
  免费   36489篇
  国内免费   715篇
耳鼻咽喉   7087篇
儿科学   17731篇
妇产科学   14159篇
基础医学   88361篇
口腔科学   14840篇
临床医学   47737篇
内科学   98534篇
皮肤病学   12707篇
神经病学   38635篇
特种医学   19001篇
外国民族医学   67篇
外科学   79320篇
综合类   8673篇
一般理论   123篇
预防医学   41332篇
眼科学   12415篇
药学   42044篇
中国医学   1025篇
肿瘤学   29973篇
  2018年   5928篇
  2017年   4404篇
  2016年   4887篇
  2015年   5382篇
  2014年   7110篇
  2013年   10960篇
  2012年   14659篇
  2011年   15958篇
  2010年   9382篇
  2009年   8746篇
  2008年   15152篇
  2007年   16144篇
  2006年   16271篇
  2005年   15594篇
  2004年   15223篇
  2003年   14442篇
  2002年   14236篇
  2001年   24269篇
  2000年   25258篇
  1999年   20746篇
  1998年   5662篇
  1997年   4893篇
  1996年   5187篇
  1995年   4772篇
  1994年   4442篇
  1992年   15803篇
  1991年   16396篇
  1990年   16507篇
  1989年   15871篇
  1988年   14639篇
  1987年   14465篇
  1986年   13660篇
  1985年   13031篇
  1984年   9688篇
  1983年   8305篇
  1982年   4628篇
  1979年   9445篇
  1978年   6890篇
  1977年   5814篇
  1976年   5652篇
  1975年   6433篇
  1974年   7672篇
  1973年   7153篇
  1972年   6983篇
  1971年   6700篇
  1970年   6184篇
  1969年   5908篇
  1968年   5568篇
  1967年   5017篇
  1966年   4461篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
Maternal and Child Health Journal - Early life exposures can have an impact on a child’s developmental trajectory and children born late preterm (34–36 weeks gestational age)...  相似文献   
3.
4.
5.
It is well recognized that the world population is ageing rapidly. Therefore, it is important to understand ageing processes at the cellular and molecular levels to predict the onset of age‐related diseases and prevent them. Recent research has focused on the identification of ageing biomarkers, including those associated with the properties of the Golgi apparatus. In this context, Golgi‐mediated glycosylation of proteins has been well characterized. Additionally, other studies show that the secretion of many compounds, including pro‐inflammatory cytokines and extracellular matrix–degrading enzymes, is modified during ageing, resulting in physical and functional skin degradation. Since the Golgi apparatus is a central organelle of the secretory pathway, we investigated its structural organization in senescent primary human dermal fibroblasts using confocal and electron microscopy. In addition, we monitored the expression of Golgi‐related genes in the same cells. Our data showed a marked alteration in the Golgi morphology during replicative senescence. In contrast to its small and compact structure in non‐senescent cells, the Golgi apparatus exhibited a large and expanded morphology in senescent fibroblasts. Our data also demonstrated that the expression of many genes related to Golgi structural integrity and function was significantly modified in senescent cells, suggesting a relationship between Golgi apparatus function and ageing.  相似文献   
6.
7.
8.
Academic output is just one aspect of a successful career as a plastic surgeon. However, for those with a strong interest in academia, the academic output of a department will likely be a key factor when deciding how to rank jobs. The aim of this study was to quantify and rank the academic output of plastic surgery units across the UK and Ireland. The Institute for Scientific Information (ISI) Web of Science Bibliometric analysis tool was used to collate cumulative (1950–2016), 10 year (2006–2016) and 3 years (2013–2015) research output data for plastic surgery units in the UK and Ireland. Sixty-six plastic surgery units were identified. Departments were ranked for each time period according to the number of papers produced, number of citations (Nc) and h-index (a measure of the impact of scientific output). The top 3 departments for number of papers in the last 10 years were The Royal Free Hospital, London (226) Broomfield Hospital, Chelmsford (218), and Morriston Hospital and Swansea (188). The top 3 for h-number were The Royal Free Hospital (21) Wythenshawe Hospital, Manchester (18) and Morriston Hospital (17). Academic output varies across plastic surgery units in the UK and Ireland. A number of departments have consistently maintained high academic outputs across the years and will be of interest to surgeons hoping to pursue a career in academia.  相似文献   
9.
ABSTRACT

Close observation of the interactions between a traumatised mother and her infant son provides information on the modes of transmission of psychic trauma in the mother–infant dyad. Following the presentation of a current literature review on the theme, the subject of “radioactive residue” and counter-transference in the transmission of psychic trauma from mother to infant will be illustrated through a clinical case study that focuses on a Haitian mother and her two-year-old infant son who has been referred to a “transitional care nursery” in urban Paris. The encounter with this mother–infant dyad is analysed through observing the quality of the interactions that take place between the mother and infant in order to determine how a particularly traumatic narrative impacts the mother–infant relationship, in addition to relations with the clinician. Mother and infant respond to one another through the emission and reception of “radioactive residues” as hypothesized by Gampel. This clinical case study shows that there is a need to consider transcultural factors and collective experience and history when analysing traumatic events. Additionally, the case study shows that counter-transference can be an effective clinical tool for gaining access to an infant's experience as the recipient of a traumatic narrative.  相似文献   
10.
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