筛网倾斜式筛分装置物料运动轨迹研究

目前筛分设备大多笨重,价格较高而且不宜携带,缺乏专门针对物料制样的筛分设备。针对现存问题,设计一种用于制样的筛网倾斜式小型筛分装置,以单颗粒筛分理论为基础,对物料在筛网上的运动轨迹进行了数学推导。借用多体动力学软件ADAMS对物料在给定条件下的运动轨迹进行了仿真。通过研究发现,在筛面直径100 mm,电机转速960r/s,倾斜角度5°的实验条件下,物料从倾斜筛面高处落下后,可以在激振力作用下回到倾斜筛面高处,重复利用倾斜筛面进行筛分,达到预期设计目的。该研究成果可以弥补现有装置的不足,为后续相关研究提供参考。     

“It's Just a Likelihood”: Uncertainty as Topic and Resource in Conveying “Positive” Results in an Antenatal Screening Clinic

The recognition of uncertainty as a pivotal issue for the sociology of medicine is longstanding. More recently, the widespread integration of new medical technologies into healthcare has led to a renewed analytic focus on uncertainty. However, there remains little work on the interactional manifestations of uncertainty. This article uses conversation analysis to examine how uncertainty is introduced and used in one specific setting: an antenatal screening clinic in Hong Kong. We focus on women who have received “screen positive” or higher risk results, and reflect on the ways in which uncertainty is an “essential tension” (Mazeland and ten Have 1996) in the activity of conveying these results to them. We conclude that as well as posing potential difficulties for interaction, the uncertainty of test results is also used here as an interactional resource in managing the institutionally defined category of “high risk.”     

Methodological approaches to the analyses of elder abuse screening measures: Application of latent variable measurement modeling to the WC-RAPS

While several elder abuse screens exist, few measure risk and none target long-term support services. The aims were to examine the psychometric properties of the Weinberg Center Risk and Abuse Prevention Screen (WC-RAPS), comparing approaches to modeling self-reported risk and abuse in relation to reported Adult Protective Services contacts. Methods: The sample (n = 7,035), admissions to managed long-term care (79%) and short-term rehabilitation (20%), was primarily (66%) female, with mean age 77.6 (SD = 9.10); 7% each were African American and Latino and 12% Asian. Latent variable models were used to examine measurement properties of six indicators of abuse and five of risk. Results: Good model fit and stable subscale measurement models were observed across analyses. Reliability was >0.80 across methods, and concurrent criterion validity estimates were as expected. Conclusion: Evidence supported the reliability and concurrent criterion validity of the risk and abuse subscales in an ethnically diverse cohort.     

Japanese Modernity and Media Studies of Screens

This article aims to construct a new perspective for analyzing the recent omnipresence of screens, the diversity of images, and their impact on our daily lives. Because of the diversification of digitalized images today, research based on film and television studies is unable to grasp the fluid relationships among screen images, spaces, and the bodies of their audience, and important task for recent scholarship is to determine how to include these screen images in media and cultural studies. In response to this issue, this article seeks to reconstruct the concept of screen practice, guided by the perspectives of Jonathan Crary and Friedrich Kittler on media and practices; Koji Taki and Ai Maeda's historical research on Japanese modernity; and Erkki Huhtamo and Yussi Parikka's media archaeological perspectives for screen and visual culture. Although the notion of screen practice was originally proposed in the field of film history, it should be expanded for broader screen cultures as the sites at which scientific discourses and technologies act on the bodies of viewers. Taking the experiences of Japanese modernity as its subject, this is a critical issue, because at these sites we can find traces of dynamic negotiations between the circulation of science and media derived from Western modernity, and existing physical and cultural vernacular practices. Moreover, going back to the screen cultures at the end of the 19th century will make clear how the process of our contemporary media environment was formed.     

亨利·詹姆斯小说的影视改编概述

国外亨利·詹姆斯小说的影视改编大致可分为三类：基本再现、当代化和艺术化。在改编过程中折射出文学经典在新语境中阐释与传播的新涵义。1960年后国外亨利.詹姆斯小说影视改编研究热潮的兴起,正反映了影视批评和文学批评之间跨学科、跨领域的联系与契合,这对顺应并引导当代文化的发展具有重要意义。     

北魏司马金龙墓屏风漆画研究

北魏司马金龙墓出土的木板屏风漆画,无论从美术题材的选择,还是绘画技法的运用,都传达出了浓郁的中原传统文化风尚。由此可以看出公元5世纪晚期汉胡文化交融下的平城,正流行着楷模汉家风仪、宗尚儒道伦理的审美时尚。     

小鼠脂肪细胞糖尿病药物筛选模型的优化及应用

糖尿病已经成为世界范围内危害人类健康的主要疾病之一,对糖尿病的研究和治疗具有重要意义,本文首先建立并优化小鼠脂肪细胞糖尿病药物筛选模型,然后使用临床抗糖尿病药物对该模型进行考察,并对海糖平(H)和杉糖平(S)两种降糖新药进行了筛选。通过Western-blot法检测GLUT4(葡萄糖转运蛋白4)以确定药物的药效。结果表明,用临床抗糖尿病药物考察模型能客观反映该药物药效。在此模型上,对杉糖平和海糖平的各个馏分进行初步筛选,发现两种药物的一些有效成分。     

单片机CRT显示接口板屏幕编辑软件的开发

本文基于单片机ＣＲＴ显示接口板（ＳＣＩＢ）之硬件支持，探讨了以单片机为核心的微机控制系统ＣＲＴ屏幕编辑软件的开发，该软件具有工况参数实时显示，加工工艺参数屏幕编辑输入，控制过程实时干预等良好的人机界面。     

高亮度高分辨率12.7cmMAO荧光屏CRT投影管

采用离心沉淀法将红、绿、蓝荧光粉分别沉淀在无色透明多晶MAO衬底材料上制作的荧光屏应用于新型红、绿、蓝三色CRT投影管中,该投影管的对角线尺寸为12.7 cm。 采用多晶MAO材料制成的新型投影管具有高亮度、高分辨率、高对比度、长寿命的显著特点。用红、绿、蓝三只12.7 cm新型多晶MAO投影管组装成的129 cm新型背投电视实验样机具有峰值亮度输出大于2 000 lm,水平分辨率大于1 800电视线(投影管),对比度大于150的特点。     

《韩熙载夜宴图》构图论析

《韩熙栽夜宴图》的构图十分耐人寻味，画家通过“屏风”这一显性的道具直接分割时空，同时精心设计某些人物“隐性”的特殊姿态，他们与屏风一起，将夜宴的多个场景有序分隔和巧妙衔接，使得这幅长卷人物画浑然一体、气脉相连。《韩熙栽夜宴图》在构图上的这一独特创意，除了画面内容和主题的需要之外，其特殊的创作动机和观者期待也起着重要的作用。