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   73633篇
  免费   4583篇
  国内免费   296篇
耳鼻咽喉   1152篇
儿科学   2101篇
妇产科学   1472篇
基础医学   8290篇
口腔科学   1482篇
临床医学   7236篇
内科学   15368篇
皮肤病学   1122篇
神经病学   7082篇
特种医学   2576篇
外国民族医学   5篇
外科学   12675篇
综合类   859篇
一般理论   94篇
预防医学   6042篇
眼科学   1425篇
药学   4713篇
中国医学   115篇
肿瘤学   4703篇
  2023年   414篇
  2022年   673篇
  2021年   1818篇
  2020年   965篇
  2019年   1598篇
  2018年   1848篇
  2017年   1350篇
  2016年   1377篇
  2015年   1518篇
  2014年   2317篇
  2013年   3274篇
  2012年   4961篇
  2011年   5156篇
  2010年   2835篇
  2009年   2519篇
  2008年   4586篇
  2007年   4836篇
  2006年   4686篇
  2005年   4649篇
  2004年   4398篇
  2003年   4037篇
  2002年   3763篇
  2001年   643篇
  2000年   579篇
  1999年   706篇
  1998年   775篇
  1997年   698篇
  1996年   614篇
  1995年   531篇
  1994年   526篇
  1993年   439篇
  1992年   428篇
  1991年   422篇
  1990年   369篇
  1989年   338篇
  1988年   315篇
  1987年   304篇
  1986年   308篇
  1985年   400篇
  1984年   460篇
  1983年   387篇
  1982年   543篇
  1981年   500篇
  1980年   461篇
  1979年   230篇
  1978年   285篇
  1977年   274篇
  1976年   222篇
  1975年   225篇
  1973年   196篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
An infant with ductal dependent pulmonary blood flow who underwent neonatal ductal stenting and, 4 months later, developed ductal stent endocarditis due to Streptococcus gallolyticus subsp. pasteurianus was described. The infection was associated with a moderate aortic pseudoaneurysm and the patient was treated with antibiotics as well as surgical aortic pseudoaneurysm repair. This novel and unusual complication of ductal stent placement warrants reporting.  相似文献   
992.
ObjectiveTo report a case of vulvar epithelioid sarcoma, a rare type of tumor that has been reported in 37 cases in the English literature to date.Case reportWe report three cases of vulvar epithelioid sarcoma, proximal type. Wide excisions of the mass were performed with margins free of tumor in all three cases.ConclusionDue to its low incidence, there are no evidence-based diagnostic algorithms or published recommendations for treatment. Locoregional lymph node involvement, vascular invasion, tumor size larger than 2 cm, deep localization, presence of necrosis, and a high mitotic index are known as poor prognostic factors. Adjuvant radiotherapy is advisable in the presence of a high-grade tumor or positive margins. The beneficial effect of adjuvant chemotherapy is not well established. Treatment decisions should be made based on the individual case presentation and pathology evaluation.  相似文献   
993.
994.
We conducted a retrospective study assessing FLAG (fludarabine, cytarabine, and granulocyte colony‐stimulating factor) as first‐line treatment in 56 newly diagnosed acute myeloid leukemia patients considered ineligible for anthracycline‐based treatment due to advanced age, significant comorbidities, or pre‐existing cardiac disease. The median age was 69 (21–80); 46% received FLAG for pre‐existing cardiac disease and others due to age (32%), non‐cardiac comorbidities (20%), or previous anthracycline exposure (2%). The induction mortality was 16% and, among evaluable patients, 48% achieved a complete remission after the first induction course with an additional patient achieving a remission after a second course for a total complete remission rate of 50%. Four patients proceeded to an allogeneic stem cell transplant including two with pre‐existing cardiac disease. Among non‐transplanted patients, the relapse rate (RR) was 47%. When censored at time of stem cell transplant, the median relapse‐free survival was 14.7 months. The median overall survival was 9.3 months with 1‐ and 2‐yr survivals of 44% and 22%, respectively. There was no difference in clinical outcomes between patients treated with FLAG for cardiac reasons vs. other reasons. In conclusion, FLAG is a useful alternative to anthracycline‐based induction for Acute myeloid leukemia in those with significant comorbidities including pre‐existing cardiac disease.  相似文献   
995.
996.
997.
Outcomes after acute respiratory distress syndrome (ARDS) are similar to those of other survivors of critical illness and largely affect the nerve, muscle, and central nervous system but also include a constellation of varied physical devastations ranging from contractures and frozen joints to tooth loss and cosmesis. Compromised quality of life is related to a spectrum of impairment of physical, social, emotional, and neurocognitive function and to a much lesser extent discrete pulmonary disability. Intensive care unit-acquired weakness (ICUAW) is ubiquitous and includes contributions from both critical illness polyneuropathy and myopathy, and recovery from these lesions may be incomplete at 5 years after ICU discharge. Cognitive impairment in ARDS survivors ranges from 70 to 100 % at hospital discharge, 46 to 80 % at 1 year, and 20 % at 5 years, and mood disorders including depression and post-traumatic stress disorder (PTSD) are also sustained and prevalent. Robust multidisciplinary and longitudinal interventions that improve these outcomes are still uncertain and data in our literature are conflicting. Studies are needed in family members of ARDS survivors to better understand long-term outcomes of the post-ICU family syndrome and to evaluate how it affects patient recovery.  相似文献   
998.
999.
1000.
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