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   2389篇
  免费   116篇
  国内免费   14篇
耳鼻咽喉   24篇
儿科学   157篇
妇产科学   121篇
基础医学   173篇
口腔科学   71篇
临床医学   234篇
内科学   537篇
皮肤病学   50篇
神经病学   114篇
特种医学   117篇
外科学   543篇
综合类   33篇
预防医学   50篇
眼科学   49篇
药学   124篇
中国医学   3篇
肿瘤学   119篇
  2023年   17篇
  2022年   31篇
  2021年   62篇
  2020年   35篇
  2019年   41篇
  2018年   51篇
  2017年   44篇
  2016年   68篇
  2015年   86篇
  2014年   98篇
  2013年   125篇
  2012年   178篇
  2011年   196篇
  2010年   111篇
  2009年   83篇
  2008年   180篇
  2007年   178篇
  2006年   188篇
  2005年   164篇
  2004年   172篇
  2003年   128篇
  2002年   83篇
  2001年   64篇
  2000年   40篇
  1999年   29篇
  1998年   13篇
  1997年   9篇
  1996年   8篇
  1995年   2篇
  1994年   4篇
  1992年   4篇
  1991年   7篇
  1990年   3篇
  1989年   2篇
  1988年   1篇
  1987年   1篇
  1983年   2篇
  1981年   1篇
  1980年   1篇
  1979年   3篇
  1974年   1篇
  1971年   1篇
  1966年   1篇
  1965年   1篇
  1963年   1篇
  1960年   1篇
排序方式: 共有2519条查询结果,搜索用时 15 毫秒
21.
22.
23.
24.
We present the case of a 58-year-old woman who had large lipomatous hypertrophy of the interventricular septum, a condition that is reported very infrequently. Preoperative cardiac magnetic resonance images revealed an inhomogeneous, infiltrating mass that was suppressed in fat-suppression mode. The extensive mass was causing right ventricular dysfunction, so we excised it through a right ventricular approach. The findings on histologic analysis of the mass were consistent with lipomatous hypertrophy. The patient died of septic shock on the 28th postoperative day. In addition to the patient''s case, we discuss the characteristics and diagnosis of this rare entity.  相似文献   
25.
The relation between cancer and coagulation is the subject of investigation since a relation between tumor and thrombosis has been determined. Antithrombin III is an important thrombin inhibitor, and increased thrombin?Cantithrombin (TAT) complex levels activate coagulation. Activated thrombin activatable fibrinolysis inhibitor (TAFI) inhibits the conversion of plasminogen to plasmin. In addition, it directly inactivates plasmin. Defective fibrinolysis increases the risk of thrombosis. In this study, we evaluated homeostatic parameters, TAFI, and TAT levels in patients with gastric cancer applying to the medical oncology outpatient clinic. Fifty-two patients and 35 healthy controls were included. ELISA was used to measure TAFI and TAT complex levels. These were statistically higher in the patient group (p?<?0.05 and p?=?0.001, respectively). D-dimer levels were higher in stage IV (p?=?0.05). Correlations between lymph nodes and TAFI and TAT levels were examined. Weak but positive correlation between lymph nodes and TAFI was detected (R?=?0.452, p?=?0.027). TAFI and TAT levels were evaluated using relative operating characteristic analysis to differentiate the disease. TAT was more specific than TAFI according to this analysis (TAFI area under curve (AUC), 0.676; TAT AUC, 0.874). Thrombotic events and bleeding disorders need to be borne in mind in gastric cancer. This situation is due to the impairment of the balance between coagulation and fibrinolysis. Further studies are now needed to evaluate the effects of TAFI and TAT on survey and prognosis as well as the potential of these parameters as tumor markers for gastric cancer.  相似文献   
26.
Omenn syndrome is a combined immunodeficiency characterized by a generalized erythematous skin rash, enlarged lymph nodes, hepatosplenomegaly, severe susceptibility to infections, eosinophilia, and hyperimmunoglobulinemia E. A 3‐month‐old girl was admitted to our hospital with a history of recurrent sepsis. Physical examination revealed severe erythroderma, hepatosplenomegaly, lymphadenopathy, and failure to thrive. Laboratory findings revealed leukocytosis, lymphocytosis with high CD3 T‐cells, a high CD4:CD8 ratio, absence of CD19 B‐cells, high eosinophil count, and low immunoglobulin levels. A heterozygote RAG1 gene mutation was found. She had itchy, scaling, ichthyosiform erythroderma and protracted diarrhea. Cyclosporin treatment up to 10 mg/kg effectively resolved erythroderma and lowered total eosinophil counts, and she gained weight during treatment. Since extensive erythroderma with generalized itching causes patient discomfort in Omenn syndrome, cyclosporin treatment can be considered while waiting for treatment with hematopoietic stem cell transplantation.  相似文献   
27.
28.
29.
30.
The purpose of this study was to determine the effect of the Grief Support Program on the bereavement of parents whose babies had died. The sample consisted of 77 couples. The data was collected by the Texas Revised Inventory of Grief and the Coping Strategies Inventory. The intervention group was offered before, immediately after, and a month after death of their baby in accordance with the Grief Support Program guideline. The Grief Support Program did not affect grief intensity in the short term but had a positive effect 1 year later.  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