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   7471篇
  免费   391篇
  国内免费   32篇
耳鼻咽喉   86篇
儿科学   143篇
妇产科学   149篇
基础医学   830篇
口腔科学   128篇
临床医学   458篇
内科学   2316篇
皮肤病学   73篇
神经病学   750篇
特种医学   182篇
外科学   941篇
综合类   42篇
一般理论   5篇
预防医学   509篇
眼科学   249篇
药学   470篇
  1篇
中国医学   21篇
肿瘤学   541篇
  2023年   52篇
  2022年   92篇
  2021年   262篇
  2020年   121篇
  2019年   230篇
  2018年   246篇
  2017年   185篇
  2016年   186篇
  2015年   213篇
  2014年   249篇
  2013年   400篇
  2012年   567篇
  2011年   566篇
  2010年   334篇
  2009年   293篇
  2008年   504篇
  2007年   499篇
  2006年   485篇
  2005年   437篇
  2004年   318篇
  2003年   359篇
  2002年   301篇
  2001年   116篇
  2000年   100篇
  1999年   81篇
  1998年   66篇
  1997年   53篇
  1996年   42篇
  1995年   33篇
  1994年   27篇
  1993年   18篇
  1992年   58篇
  1991年   42篇
  1990年   35篇
  1989年   40篇
  1988年   36篇
  1987年   33篇
  1986年   24篇
  1985年   21篇
  1984年   15篇
  1983年   10篇
  1982年   19篇
  1981年   13篇
  1980年   13篇
  1979年   7篇
  1978年   10篇
  1977年   9篇
  1976年   12篇
  1975年   6篇
  1974年   13篇
排序方式: 共有7894条查询结果,搜索用时 15 毫秒
1.
2.
Stress related to parenting a child with autism spectrum disorder can differently affect caregiver's physiological reactivity to acute stress. Here, parental stress levels, psychological characteristics, and coping strategies were assessed alongside measures of heart rate, heart rate variability, and cortisol during a psychosocial stress test in mothers of children with ASD (M‐ASD, n = 15) and mothers of typically developing children (n = 15). M‐ASD reported significantly higher levels of parental stress, anxiety, negative affectivity, social inhibition, and a larger preference for avoidance strategies. M‐ASD showed larger heart rate and cortisol responses to the psychosocial stress test. A positive relationship was found between parental stress levels and the magnitude of the cortisol stress response in both groups. The present findings indicate exaggerated physiological reactivity to acute psychosocial stress in M‐ASD and prompt further research to explore the role of individual differences in mediating the effects of parental stress on physiological stress responses.  相似文献   
3.
4.

Objective

To analyse and understand vaccination hesitancy discourses, particularly those of people who have decided not to vaccinate their sons and daughters.

Methods

Qualitative study of five individual interviews and two focus groups with people who chose not to vaccinate their children in the province of Granada (Spain).

Results

Mothers and fathers manifest a system of health beliefs different to the biomedical paradigm. From an ethical point of view, they justify their position based on the right to autonomy and responsibility for their decisions. Alleged specific reasons: they doubt administration of several vaccines simultaneously at an early age in a systematic way and without individualising each case; they fear adverse effects and do not understand the variations of the vaccination schedule.

Conclusions

These vaccination hesitancy discourses respond to the individual vs collective conflict; parents defend their right to bring up their children without any interference from the state and focus their responsibility on the individual welfare of their sons and daughters, regardless of the consequences that their actions might have on the collective. In their management of risks, they consider those derived from vaccination more relevant than the individual or collective consequences of not doing so. The vaccines generating most doubts are the more controversial ones within the scientific world. Transparency in communication of adverse effects; authorities respect for other health/disease concepts; banishment of the term “anti-vaccines” from the media and scientific vocabulary, and developing spaces for dialogue are bridges to be built.  相似文献   
5.
Persistent infection by human papilloma virus (HPV) is considered to be the main cause of cervical cancer and other ano-genital cancers. Of more than 30 genotypes able to infect the anogenital tract, it is estimated that, worldwide, HPV 16 and 18 cause 70% of cervical cancers and that HPV 6 and 11 cause more than 90% of genital warts. In the last few years, the morbidity and mortality and health costs associated with cervical cancer and its precursor lesions have stimulated intense research activity to achieve primary prevention of this disease through prophylactic vaccines.  相似文献   
6.
7.
8.
Myelofibrosis with myeloid metaplasia (MMM) is currently classified as a classic (ie, BCR-ABL-negative) myeloproliferative disorder characterized by anemia, multiorgan extramedullary hematopoiesis, constitutional symptoms, and premature death from either leukemic transformation or other disease complications. Stem cell transplantation can be curative, but many patients either are not appropriate candidates or do not choose to accept the significant risks associated with transplantation. Current pharmacologic therapy has been beneficial mainly in terms of palliating disease-associated cytopenias, constitutional symptoms, splenomegaly, and other organ damage from excess myeloproliferation. Novel treatment strategies are under investigation, including targeted inhibition of JAK2V617F, the activating tyrosine kinase point mutation present in about half of patients with MMM. In this article, we review both the old and new pharmacologic options for MMM.  相似文献   
9.
Colorectal cancer is one of the best studied of all malignant diseases interms of genetics and/or molecular prognostic factors. These factors, and relationships with prognosis, may have important implications especially in the design of surgical and adjuvant chemo-radiotherapy options. However, the true prognostic significance of all known factors has yet to be realised. We have reviewed the literature with specific focus on the role of molecular markers involved in prognosis and the prediction of response to adjuvant treatment.  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