牛顿环实验装置的改装

介绍了一种巧妙且及其简单易行的方法来测量牛顿环实验中透镜的曲率半径。     

Proteins induced by telomere dysfunction are associated with human IgA nephropathy

Aging is one of the contributing risk factors for kidney diseases. Accumulating evidence prompts the view that telomere length in kidney tissue cells is an indicator for organismal aging. Previously identified aging markers (cathelin-related antimicrobial peptide (CRAMP), stathmin, elongation factor-1α (EF-1α), and chitinase) were associated not only with telomere driven aging in mice but also with human aging and chronic diseases. This study focuses on the relationship between these biomarkers and IgA nephropathy (IgAN) progression in the Chinese population. For 260 individuals, the four markers are determined in blind datasets using direct enzyme-linked immunosorbent assay (ELISA) and immunofluorescence staining. The expression levels of CRAMP and chitinase increased in blood plasma, urine, and kidney tissues during human IgAN progression. And for the other nephropathy, such as systemic lupus erythematosus (SLE), diabetic nephropathy (DN), and focal segmental glomerulosclerosis (FSGS), there is no protein upregulation with telomere shortening. Moreover, a combination of CRAMP and chitinase can distinguish patients with IgAN from healthy individuals with 88.2%/92.5% (plasma) and 74.3%/84.2% (urine) sensitivity/specificity. These data provide the experimental evidence that telomere shortening and related inflammatory proteins are associated with human IgAN, and it could be a new direction for the disease progression study.     

编辑人才是强刊的关键 ——以《应用生态学报》为例

提高期刊质量是很多科技期刊发展诸多问题中亟待解决的关键问题,而提高编辑人员素质是提高办刊水平和期刊质量的关键。文章以《应用生态学报》为例,阐明何为"编辑人才",分析为什么说"编辑人才是强刊的关键",阐述如何使编辑人才"为我所用",从而为提高科技期刊质量提供参考。     

巧用简单装置演示“电场中的电势能”

"电势能和电势"的概念抽象难懂,不易理解。教学过程中通常出现"教师讲得明白,学生听得糊涂"的现象。如何能让学生直观地"看到"电势能一直是广大教师追求的目标。笔者利用实验室常见的仪器感应起电机和平行金属板,进行简单设计,将"抽象神秘"的电势能变得"直观可见"。     

Understanding the majority opinion formation process in online environments: An exploratory approach to Facebook

Majority opinions are often observed in the process of social interaction in online communities, but few studies have addressed this issue with empirical data. To identify an appropriate theoretical lens for explaining majority opinions in online environments, this study investigates the skewness statistic, which indicates how many “Likes” are skewed to major comments on a Facebook post; 3489 posts are gathered from the New York Times Facebook page for 100 days. Results show that time is not an influential factor for skewness increase, but the number of comments has a logarithmic relation to skewness increase. Regression models and Chow tests show that this relationship differs depending on topic contents, but majority opinions are significant in overall. These results suggest that the bandwagon effect due to social affordance can be a suitable mechanism for explaining majority opinion formation in an online environment and that majority opinions in online communities can be misperceived due to overestimation.     

狄金森“死亡诗歌”的创作动机探析

诗人艾米莉·狄金森一生创作1775首诗歌,其中600多首以＂死亡＂为主题的作品成为她所有诗歌的精华,在世界文学史上具有标新立异的创作特点。本文以心理研究为依据,立足19世纪美国时代背景,从诗人的生活环境、创作经历、宗教影响三方面入手,阐释诗人＂死亡诗歌＂的创作动机。     

数据结构教学实践与体会

探讨"数据结构"课程的研究与教学内容,从实践的角度出发介绍该课程教学的若干方法与体会。     

浅议高校档案人员的素质定位

高校档案是高等学校活动的直接记录,是国家重要的信息资源。在档案工作不断深入发展的过程中,高校档案人员必须加强政治素质、业务素质和时代意识修养。