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   690篇
  免费   28篇
  国内免费   20篇
儿科学   4篇
妇产科学   17篇
基础医学   79篇
口腔科学   13篇
临床医学   40篇
内科学   66篇
神经病学   257篇
特种医学   34篇
外科学   55篇
综合类   29篇
预防医学   40篇
眼科学   5篇
药学   60篇
中国医学   15篇
肿瘤学   24篇
  2023年   47篇
  2022年   36篇
  2021年   79篇
  2020年   64篇
  2019年   21篇
  2018年   19篇
  2017年   37篇
  2016年   31篇
  2015年   33篇
  2014年   73篇
  2013年   23篇
  2012年   38篇
  2011年   20篇
  2010年   53篇
  2009年   40篇
  2008年   8篇
  2007年   20篇
  2006年   14篇
  2005年   9篇
  2004年   5篇
  2003年   9篇
  2002年   4篇
  2001年   7篇
  2000年   6篇
  1999年   7篇
  1998年   13篇
  1997年   5篇
  1996年   14篇
  1994年   1篇
  1993年   2篇
排序方式: 共有738条查询结果,搜索用时 15 毫秒
1.
BackgroundNowadays surgery remains the gold standard of treatment for tongue cancer. Via a more clear and precise terminology, the glossectomy classification by Ansarin et al. facilitates shared communication between surgeons, allowing comparison between published research and improving surgical practice and patient care. To establish the association of glossectomies, according to their classification by Ansarin et al. with overall survival (OS), disease-free survival (DSF), and cause-specific survival (CSS) in tongue cancer, we conducted a systemic retrospective study on 300 consecutive patients affected by primary oral tongue cancer and treated with surgery at the European Institute of Oncology, IRCCS (IEO).MethodsThree hundred patients with tongue squamous cell carcinoma and treated at the Division of Otorhinolaryngology and Head and Neck Surgery of the European Institute of Oncology, IRCCS were cataloged according to the glossectomy classification. OS, DFS, and CSS were compared by surgical treatments.ResultsOS-5yrs was 80% for the type I glossectomy group, 75% for type II, 65% for type III, and 35% for type IV-V. DFS-5yrs was 74%, 60%, 55%, and 27%, respectively for I, II, III, and IV-V glossectomy group; CSS-5yrs was 82%, 80%, 72%, and 48%, respectively for I, II, III, and IV-V glossectomy group (p < 0.01).ConclusionsThis study confirmed that the application of the glossectomy classification was statistically correlated with patients' oncological outcomes.  相似文献   
2.
3.
ObjectivesIntraventricular hemorrhage (IVH) is a subtype of stroke which has high mortality and morbidity, while comprehensive mechanism investigations and effective therapies are still in great need. Plenty of studies have shown that inflammation after stroke plays a critical role in disease outcomes. However, the inflammation after IVH remains unclear. This study aims to observe the immune response after IVH, thus providing therapeutic targets for IVH treatments.Materials and methodsIVH was induced by autologous blood infusion model in SD rats. Totally 588 rats were assigned either in the sham or IVH group. T2* lesion and hemoglobin quantities, ventricular volume, brain edema, ventricular wall damage, blood-brain-barrier (BBB) continuity and immune response were observed by magnetic resonance image (MRI), hematoxylin-eosin staining (HE), Evans Blue, flow cytometry (FACS), and enzyme-linked immunosorbent assay (ELISA) at baseline, 6 h, 1 d, 3 d, 7 d, 14 d after surgery.ResultsWe found that ventricular volume enlargement occurred hours after IVH and peaked at 3 d after IVH, then mildly reduced till 14 d. Similar changes happened in brain edema, ventricular wall damage and BBB leakage. Immune cells and cytokines in the central nervous system and peripheral blood also increased after IVH and experienced similar trends as ventricular enlargement. T2* lesion and hemoglobin degradation occurred 6 h after IVH and kept decreasing till 14 d after IVH.ConclusionsOur investigation illustrates that immune response exists after IVH, which may have a close relationship with disease outcomes. These results may provide promising immune related clues for mechanism and intervention studies in IVH.  相似文献   
4.
5.
胶质瘤bcd—2基因表达水平与其细胞增殖和凋亡关系的研究   总被引:12,自引:0,他引:12  
Yu S  Pu P  Jiang D  An T  Guan X  Yang L 《中华病理学杂志》2000,29(1):12-15
目的 探讨胶质瘤细胞bcl-2基因表达水平与肿瘤恶性程度、细胞增殖活性及凋亡程度的关系。方法 以69例不同级别的人胶质瘤组织为研究对象,用原位杂交及免疫组化染色ABC法分别检测bcl-2mRNA、bcl-2蛋白和增殖细胞核抗原(细胞增殖活性标记物)的表达,并用3’末标记法做原位细胞凋亡检测。结果 64例(92.8%)表达bcl-2mRNA,60例(87.0%)表达bcl-2蛋白,两者的表达水平呈正  相似文献   
6.
目的构建p33^ING1b核定位序列(nuclear locating sequence,NLS)-绿荧光蛋白融合表达载体,将其转染到人胚肺纤维母细胞系MRC-5,建立稳定表达该融合蛋白的细胞模型。方法应用逆转录PCR获得p33^ING1b的NLS序列,然后将NLS序列插入绿荧光蛋白融合表达载体pEGFP-C1的多克隆位点,构建pEGFP-C1-NLS-绿荧光蛋白融合表达载体,再用此载体转染MRC-5细胞系,观察活细胞绿荧光蛋白的亚细胞定位。结果成功构建了pEGFP-C1-NLS-绿荧光蛋白融合表达载体,由该载体表达的绿荧光蛋白-NLS肽段融合蛋白产生的绿色荧光信号全部定位于胞核部位,而空载体转染的细胞表达的绿色荧光蛋白,绿色荧光信号定位于细胞浆中。结论在活细胞内,生理情况下p33^ING1b完全定位于细胞核,并且在其亚细胞定位的转运过程中,NLS肽段起着决定性作用。  相似文献   
7.
《世界针灸杂志》2023,33(3):191-197
“Long COVID” is a sustained symptom following infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). According to recent statistics, at least 65 million people have long COVID, which poses a long-term threat to human health. The pathogenic mechanisms of coronavirus disease 2019 (COVID-19) are complex and affect multiple organs and systems. Common symptoms include palpitations, breathing difficulties, attention and memory deficits, fatigue, anxiety, and depression. It is difficult to achieve satisfactory treatment effect with a single intervention. Currently, treatment strategies for long COVID are still in the exploratory stage, and there is an urgent need to find appropriate and effective methods for long COVID treatment. Traditional Chinese medicine is effective in treating the various phases of COVID-19. Previous studies have shown that acupoint stimulation therapy is effective in improving palpitations, dyspnea, cognitive impairment, anxiety, depression, and other symptoms in patients. According to previous studies, acupoint stimulation may improve various symptoms related to long COVID. This paper discusses the potential application value of acupoint stimulation in the treatment of long COVID-related symptoms, based on the common sequelae of various systems involved in long COVID, and the effect of acupoint stimulation in the treatment of similar symptoms and diseases in recent years.  相似文献   
8.
9.
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