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   795篇
  免费   38篇
  国内免费   8篇
耳鼻咽喉   8篇
儿科学   51篇
妇产科学   28篇
基础医学   96篇
口腔科学   20篇
临床医学   71篇
内科学   123篇
皮肤病学   15篇
神经病学   66篇
特种医学   25篇
外科学   100篇
综合类   11篇
预防医学   24篇
眼科学   16篇
药学   30篇
肿瘤学   157篇
  2024年   3篇
  2023年   9篇
  2022年   12篇
  2021年   16篇
  2020年   13篇
  2019年   9篇
  2018年   16篇
  2017年   20篇
  2016年   24篇
  2015年   29篇
  2014年   46篇
  2013年   60篇
  2012年   70篇
  2011年   68篇
  2010年   44篇
  2009年   22篇
  2008年   46篇
  2007年   61篇
  2006年   60篇
  2005年   71篇
  2004年   55篇
  2003年   40篇
  2002年   33篇
  2001年   2篇
  2000年   3篇
  1999年   3篇
  1998年   4篇
  1996年   1篇
  1989年   1篇
排序方式: 共有841条查询结果,搜索用时 31 毫秒
11.
12.
13.
Clinical Oral Investigations - The first objective of the present study was to evaluate the tensile strength and elongation to failure of commonly used suture materials in oral surgery. As a...  相似文献   
14.
15.
16.
17.
Objective: The aim of present study was to evaluate the indications and the complications associated with neonatal exchange transfusion (ET) performed for hyperbilirubinemia.

Methods: This study included overall 306 neonates who underwent ET between 2005 and 2012. The demographic characteristics of patients, causes of jaundice and adverse events occurred during or within 1 week after ET were recorded from their medical files. Those newborns that underwent ET were classified as either “otherwise healthy” or “sick” group.

Results: Of the 306 patients who underwent ET, 244 were otherwise healthy and had no medical problems other than jaundice. The remaining 62 patients were classified as sick that had medical problems other than jaundice ranging from mild to severe. The mean gestational age was 37.6?±?2.5 weeks and the mean peak total bilirubin levels was 25.8?±?6.6?mg/dl. The mean age at presentation was 5.4?±?3.8?d for all infants. The most common cause of hyperbilirubinemia was ABO isoimmunization (27.8%). None of newborns died secondary to ET. Three infants had had necrotizing enterocolitis, and also three infants had had acute renal failure. The most common encountered complications of ET procedure were hyperglycemia (56.5%), hypocalcaemia (22.5%) and thrombocytopenia (16%).

Conclusions: Our data showed that ABO isoimmunization was the most common cause of hyperbilirubinemia. Even mortality was not seen, very rare but major gastrointestinal and renal complications were associated with ET. The majority of adverse events associated with ET were laboratory abnormalities mainly hyperglycemia, hypocalcaemia and thrombocytopenia which were asymptomatic and treatable.  相似文献   
18.
Annals of Nuclear Medicine - Pulmonary embolism is a severe source of mortality and morbidity in patients with severe and critical coronavirus disease 2019. It is not yet clear whether the tendency...  相似文献   
19.
Clinical Oral Investigations - The aim of this study is to investigate the effect of photobiomodulation therapies on root resorption compared with the placebo group. Thirty patients who were...  相似文献   
20.
ObjectiveAltered serum S100B protein levels have been shown in several psychiatric disorders. Our aim was to investigate whether plasma S100B is different in patients with panic disorder (PD) when compared with controls. Our second aim was to investigate whether treatment with SSRIs have an effect on S100B levels in patients with PD.MethodsThe sample included 32 patients diagnosed with PD (21 women, 11 men) per DSM-IV criteria and 21 healthy controls (11 women, 10 men). S100B levels were measured with BioVendor Human S100B ELISA (Enzyme Linked Immunosorbent Assay) kit.Results14 patients were not on drug treatment (43.8%) while 18 patients were taking various SSRIs. Median S100B value was 151.7 pg/mL (minimum-maximum: 120.4-164.7 pg/mL) in the control group, 147.4 pg/mL (minimum-maximum: 138.8-154.1 pg/mL) in the drug free group and 153.0 pg/mL (minimum-maximum: 137.9-164.7 pg/mL) in the treatment group. Kruskal-Wallis analysis showed a significant diffrerence among the three groups (z=9.9, df=2, p=0.007). Follow up Mann-Whitney-U tests indicated that while the control and the patients with treatment were not significantly different (z=-0.05, p=0.96), there were significant differences between the control group and untreated patients (z=-2.6, p=0.009) and treated and untreated patients (z=-3.0, p=0.003).ConclusionOur results suggested that, serum S100B protein level might be decreased in untreated PD patients and that patients who were treated with SSRIs had similar S100B level to healthy controls.  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