中国古代“文气论”探■     

WAN Qi 《内蒙古师范大学学报(哲学社会科学版)》1999,(1)

“气”是中国文化的核心范畴。作为文章之“气”，可析之为三：作者之气、创制之气和文本之气。由此可推演出“文气论”的三个组成部分：着眼于作者的“养气说”、关乎创制的“行气说”和立足文本的“神气说”。因“文气论”在“作者——创制——文本”中具有举足轻重的作用，故而，它成为中国文章理论的核心  相似文献   

CHINESE ARTS SPARKS FEVER AT CERVANTES FESTIVAL     

Qi Daren 《中外文化交流(英文版)》2007,(11):30-33

Cervantes International Festival, the largest cultural event in Latin America, embraced its 35th session on October 3 in the historic city of Guanajuato, Mexico. China was invited as the guest country of the annual festival this year and regaled the audience with diverse performances and exhibitions. At the opening evening gala taking place in the city＇s Frog Plaza singers and dancers from the Chinese province of Jilin staged fascinating programs, all with distinctive Chinese flavors and winning lots of ovations. Chinese assistant cultural minister Ding Wei, senior officials from Guanajuato as well as many other distinguished guests watched opening performances.[第一段]  相似文献   

无反冲γ射线的共振吸收现象——穆斯堡尔效应     

李士 《物理教学》2011,(2)

一、什么是穆斯堡尔效应穆斯堡尔效应是由前西德科学家R·L·穆斯堡尔在1958年发现的,由于观察到的共振线宽非常窄,故此现象几乎立即引起物理学界的重视,三年之后获得了诺贝尔物理学奖。当时他仅仅32岁,后来这种现象被称为穆斯堡尔效应。对穆斯堡尔效应的  相似文献   

Deregulation of microRNA expression in thyroid tumors简     

Zi-ming YUAN  Zhi-li YANG  Qi ZHENG 《Journal of Zhejiang University. Science. B》2014,15(3):212-224

MicroRNAs (miRNAs or miRs) are endogenous non-coding RNAs that negatively regulate gene expression by binding to the 3′ non-coding regions of target mRNAs, resulting in their cleavage or blocking their translation. miRNAs may have an impact on cell differentiation, proliferation, and survival, and their deregulation can be inclined to diseases and cancers, including thyroid tumors. The purpose of this review is to summarize the existing findings of deregulated miRNAs in different types of thyroid tumors and to exhibit their potential target genes, especially to demonstrate those involved in tumor invasion and metastasis. In addition, new findings of circulating miRNA expression profiles, single nucleotide polymorphism (SNP) in thyroid tumors, and the correlation of somatic mutations with deregulated miRNA expression in thyroid tumors were all included in this review.  相似文献   

Is right ventricular mid-septal pacing superior to apical pacing in patients with high degree atrio-ventricular block and moderately depressed left ventricular function?   总被引：2，自引：0，他引：2  

Kang CHEN  Ye MAO  Shao-hua LIU  Qiong WU  Qing-zhi LUO  Wen-qi PAN  Qi JIN  Ning ZHANG  Tian-you LING  Ying CHEN  Gang GU  Wei-feng SHEN  Li-qun WU 《Journal of Zhejiang University. Science. B》2014,15(6):507-514

Objective

We are aimed to investigate whether right ventricular mid-septal pacing (RVMSP) is superior to conventional right ventricular apical pacing (RVAP) in improving clinical functional capacity and left ventricular ejection fraction (LVEF) for patients with high-degree atrio-ventricular block and moderately depressed left ventricle (LV) function.

Methods

Ninety-two patients with high-degree atrio-ventricular block and moderately reduced LVEF (ranging from 35% to 50%) were randomly allocated to RVMSP (n=45) and RVAP (n=47). New York Heart Association (NYHA) functional class, echocardiographic LVEF, and distance during a 6-min walk test (6MWT) were determined at 18 months after pacemaker implantation. Serum levels of N-terminal pro-brain natriuretic peptide (NT-proBNP) were measured using an enzyme-linked immunosorbent assay (ELISA) kit.

Results

Compared with baseline, NYHA functional class remained unchanged at 18 months, distance during 6MWT (485 m vs. 517 m) and LVEF (36.7% vs. 41.8%) were increased, but BNP levels were reduced (2352 pg/ml vs. 710 pg/ml) in the RVMSP group compared with those in the RVAP group, especially in patients with LVEF 35%–40% (for all comparisons, P<0.05). However, clinical function capacity and LV function measurements were not significantly changed in patients with RVAP, despite the pacing measurements being similar in both groups, such as R-wave amplitude and capture threshold.

Conclusions

RVMSP provides a better clinical utility, compared with RVAP, in patients with high-degree atrioventricular block and moderately depressed LV function whose LVEF levels ranged from 35% to 40%.  相似文献   

21世纪初中国科技出版:提速领域和发展趋势   总被引：1，自引：0，他引：1  

李士 《中国出版》2001,(1)

21世纪，科学对人类社会、经济发展将产生更大影响。在现代科技发展中，各学科在自身发展的同时，将更加相互依赖，相互作用，协同发展。科技出版必须适应这一趋势。科技出版业必须进行前瞻性战略调整，树立大科学意识，跟上世界科学技术发展的步伐，迎接科学技术发展和新技术革命挑战。 一、科技出版滞后于科技发展的局面将会改变 可以说，人类在20世纪目睹了比过去几个世纪科技成果总和还要多的发现与发明。可以预计，21世纪仍是科学技术飞速发展的时代。 首先，信息技术（包括计算机广泛应用和通讯技术的快速发展）、生物工程、纳米材料…  相似文献   

Confucian Descendent Kong Xiangkai Promotes Confucianism from South     

Qi Yongye 《文化交流》2012,(4)

  相似文献   

Evaluation and application of an efficient plant DNA extraction protocol for laboratory and field testing     

Qi WANG  Xiaoxia SHEN  Tian QIU  Wei WU  Lin LI  Zhi'an WANG  Huixia SHOU 《Journal of Zhejiang University. Science. B》2021,22(2):99

Nucleic acids in plant tissue lysates can be captured quickly by a cellulose filter paper and prepared for amplification after a quick purification.In this study,a published filter paper strip method was modified by sticking the filter paper on a polyvinyl chloride resin(PVC)sheet.This modified method is named EZ-D,for EASY DNA extraction.Compared with the original cetyl trimethylammonium bromide(CTAB)method,DNA extracted by EZ-D is more efficient in polymerase chain reaction(PCR)amplification due to the more stable performance of the EZ-D stick.The EZ-D method is also faster,easier,and cheaper.PCR analyses showed that DNA extracted from several types of plant tissues by EZ-D was appropriate for specific identification of biological samples.A regular PCR reaction can detect the EZ-D-extracted DNA template at concentration as low as 0.1 ng/μL.Evaluation of the EZ-D showed that DNA extracts could be successfully amplified by PCR reaction for DNA fragments up to 3000 bp in length and up to 80%in GC content.EZ-D was successfully used for DNA extraction from a variety of plant species and plant tissues.Moreover,when EZ-D was combined with the loop-mediated isothermal amplification(LAMP)method,DNA identification of biological samples could be achieved without the need for specialized equipment.As an optimized DNA purification method,EZ-D shows great advantages in application and can be used widely in laboratories where equipment is limited and rapid results are required.  相似文献   

Study on the failure mechanism of Ag-Ce contacts in DC level     

MENG Fan-bin LU Jian-guo LU Ning-yi CHEN Zhi-chao CHEN Qi 《浙江大学学报(A卷英文版)》2007,8(3):449-452

Nominal contact resistance, minimum erosion and material transfer are required with low cost materials working in a wide currents range for DC relays. Ag-Ni contact materials have low contact resistance, but the erosion and material transfer are large at high current level. Ag-SnO2 contact materials have good anti-welding properties and resistance to arc erosion, but they have large contact resistance during working and are easily block SnO2 from flocking together on the surface at low current level. In this paper, the failure mechanisms of Ag-Ce contact material were studied. The surface morphologies of the contacts after electrical endurance test for Ag-Ce contact material were compared with that of Ag-Ni and Ag-SnO2 contact materials. The effect of Ce on the surface morphologies of the contacts after electrical endurance test was analyzed.  相似文献   

关于数学教育心理学研究的几点思考     

李士Qi 《数学教育学报》1994,3(2):31-36

开展数学教育心理学研究可从教学实践建立起自己的理论框架，而不是借用普通心理学理论，数学教育心理学是一门实验科学，我们应采用实验科学的方法进行研究，并以认知建构观点加以指导．  相似文献