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   472篇
  免费   1篇
  国内免费   5篇
教育   358篇
科学研究   51篇
各国文化   2篇
体育   10篇
综合类   11篇
信息传播   46篇
  2023年   3篇
  2022年   4篇
  2021年   17篇
  2020年   10篇
  2019年   6篇
  2018年   8篇
  2017年   6篇
  2016年   10篇
  2015年   12篇
  2014年   31篇
  2013年   25篇
  2012年   39篇
  2011年   49篇
  2010年   24篇
  2009年   20篇
  2008年   16篇
  2007年   43篇
  2006年   33篇
  2005年   23篇
  2004年   17篇
  2003年   22篇
  2002年   15篇
  2001年   25篇
  2000年   5篇
  1999年   5篇
  1998年   1篇
  1997年   2篇
  1994年   4篇
  1992年   3篇
排序方式: 共有478条查询结果,搜索用时 15 毫秒
31.
妈祖信俗口述档案建档范围的确定   总被引:1,自引:0,他引:1  
最鲜活的妈祖信俗记忆在民间。建档人员可以依据来源的相对可靠性、内容的独特性以及相对价值标准确定妈祖信俗口述档案的建档范围。通过田野调查发现口述主要内容的规律后,凝练出了具体建档范围,并体现为建档类目,可为建档实践提供原则性参考。  相似文献   
32.
The present study evaluated the plausible role of circulating biomarkers in immune pathogenesis of chronic hepatitis considered a priority in clinical hepatology. Total viral load of chronic hepatitis B virus (HBV) and hepatitis C virus (HCV) patients was quantified and correlation studies were performed with circulating levels of Th1/Th2 cytokines; C reactive protein and circulating nucleosomes; glutathione reductase (GR) and superoxide dismutase. To our knowledge, the study is first among its kind that validates strong positive correlation of viral load with IL-4, IL-6, GR in HBV and IL-6, IL-10, GR in HCV infections. Although, multi-centric studies including large cohorts are required for translating our findings to clinical practice, however, role of these biomarkers with potential diagnostic or prognostic significance might be helpful in clinical assessment of high-risk individuals, thereby, designing interventional strategies, towards development of personalized medicare. The results of our study also offer valuable insights of immune signaling mediators engaged in development of hepatocellular carcinoma.  相似文献   
33.
Oral cancer has emerged as an alarming public health problem with increasing incidence and mortality rates all over the world. Therefore, the implementation of newer screening and early detection approaches are of utmost importance which could reduce the morbidity and mortality associated with this disease. Sensitive and specific biomarkers for oral cancer are likely to be most effective for screening, diagnosis, staging and follow-up for this dreaded malignancy. Unlike other deep cancers, oral cancer is located in oral cavity. Hence, the direct contact between saliva and oral cancer lesion makes the measurement of tumor markers in saliva an attractive alternative to serum and tissue testing. The DNA, RNA and protein molecules derived from the living cancer cells can be conveniently obtained from saliva. Thus, salivary biomarkers, a non-invasive alternative to serum and tissue-based biomarkers may be an effective modality for early diagnosis, prognostication and monitoring post therapy status. In the current post-genomic era, various technologies provide opportunities for high-throughput approaches to genomics and proteomics; which have been used to evaluate altered expressions of gene and protein targets in saliva of oral cancer patients. The emerging field of salivary biomarkers has great potentials to prove its clinical significance to combat oral cancer. Hence, we have reviewed importance of several salivary genomics and proteomics biomarkers for oral cancer.  相似文献   
34.
杨梅 《科教文汇》2011,(4):140-141
本文论述了在高职非英语专业英语口语课堂中,对英语口语分班、分组教学模式的探索,提出了实施课堂分班、分组活动模式背景,原因以及具体方式,能更好地帮助学生发展其语言交际能力并激发更大的学习积极性和创造性。  相似文献   
35.
口述档案的开发利用在档案学研究领域占有重要地位,对于塑造历史记忆,传承民族文化,丰富馆藏结构等方面具有重要意义。然而目前口述档案的开发利用还不够充分。本文首先阐述了口述档案的价值,分析了口述档案开发利用中存在的问题与成因,提出了口述档案开发利用的对策和建议,旨在进一步拓展开发利用的路径,为口述档案建设提供理论支撑。  相似文献   
36.
根据普通话水平测试与中国少数民族汉语水平等级考试(MHK)词汇(三级)的相关性,提出将普通话训练与MHK口试训练融合的建议。通过对普通话训练和MHK(三级)口语考试词汇教学重点进行详细解读,提出具体教学策略,以切实提高新疆少数民族学生国家通用语言文字运用能力。  相似文献   
37.
38.
由于现行非英语专业硕士生英语口试易受考官等主观因素影响,其评分方法也存在不足。本文针对非英语专业硕士生英语口试中的模糊性,采用模糊综合评价方法,建立非英语专业硕士生英语口试模糊综合评分的评判模型并进行实证分析。研究表明:非英语专业硕士生英语口试模糊综合评分能有效减少主观因素的影响,且计算方法简单,评判结果更精确。  相似文献   
39.
Hepatocellular carcinoma (HCC) is one of the commonest tumors worldwide. The treatment of HCC is vital for disease diagnosis and prognosis, as the liver is the most important organ controlling metabolic functions. Now-a-days, western folklore medicines are largely dependent on the phyto compounds which are highly effective in therapy and with low side effects. Luteolin is a flavonoid (3,4,5,7-Tetrahydro flavones) possess anti-inflammatory, anticancer and anti allergic property. The present study evaluates the efficacy of luteolin against N-nitrosodiethylamine (DEN) induced HCC in albino rats. In the highlight of the above, luteolin was evaluated for its efficacy against DEN induced HCC in male Wistar albino rats. The Biochemical parameters such as tissue damaging enzymes viz., AST, ALP, LDH and γ-GT, enzymatic antioxidants viz., SOD, CAT, GSH and GPx and histopathological changes have been estimated. The tissue damaging enzymes were found to be high in DEN alone treated group whereas the enzymatic antioxidants decreased destructively. Severe lesions and cirrhosis were observed in the toxin (DEN alone) treated group. The luteolin treated DEN group altered the tissue damaging enzymes and the enzymatic antioxidants. The damaged lesion in the histoarchitecture of DEN treated rat liver was almost completely restored. Finally this study strongly demonstrates that luteolin has potent curative property against HCC in albino rats.  相似文献   
40.
Chromophobe renal cell carcinoma(ChRCC) metastatic to the testis has not,to the best of our knowledge,been reported in the literature.Nor have there been reports of delayed bilateral adrenal metastasis of ChRCC.Here we report a case of metachronous contralateral testicular and bilateral adrenal metastasis of ChRCC in a 70-year-old man who underwent right radical nephrectomy for RCC six years ago.He was admitted to the hospital because of left intrascrotal enlargement of two-month duration.Ultrasonography re...  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