改性MCM-41分子筛负载钼钴系催化剂的TPS研究

本文采用程序升温硫化(TPS)技术研究了负载于MCM-41分子筛的钼钴系催化剂的性能。根据TPS结果可知:(1)载体和MoO_3相互作用强弱顺序如下:Al_2O_3>Al_2O_3-MCM-41>MCM-41>TiO_2-MCM-41,由此推断TiO_2具有削弱MCM-41和MoO_3作用的能力,而Al_2O_3则相反,它增强了MoO_3和MCM-41的相互作用;(2)助剂CoO对负载在未经改性的MCM-41载体上的MoO_3的硫化没有明显的促进作用,这和以Al_2O_3为载体的情况不同,TPS结果表明在Al_2O_3上MoO_3和CoO可能生成Co-Mo-O复合相从而促进了MoO_3的硫化;(3)助剂CoO对负载在经TiO_2和Al_2O_3改性的MCM-41上的MoO_3的硫化起促进作用。     

丰田生产方式评价指标体系的建立及其应用研究

尽管丰田生产方式(TPS)作为高效的经营管理典范已在全球广为普及，但至今仍然没有企业TPS实施水平和效果的评价标准。首次提出了TPS的评价体系，建立了TPS评价体系的九大评价指标。并应用该套评价指标体系对企业进行实际评价分析，提出了相应的企业TPS实施水平升级对策。     

基于文化创生秩序的TPS推广模式

提出从理念、制度和技术等三个创生秩序来构建丰田生产方式(TPS)推进的应用模式,通过这三个层面的不断推进和完善,促进TPS文化的形成和技术工具体系的顺利实施。     

Children’s Typically‐Perceived‐Situations of Force and No Force in the Context of Australia and Korea

Typically‐Perceived‐Situation (TPS) refers to the situation rising spontaneously in an individual’s mind when she/he first thinks of a phenomenon or concept. The purpose of this study is to go well beyond the many studies that describe conceptions of force and explore children’s TPS of “force is acting on a thing” and “force is not acting on a thing”, and to do this in the differing contexts of Australia and Korea. Data were collected by drawings and written explanations from 145 Grade 6 Australian children and 150 Grade 6 Korean children. These data showed some significant differences between the Australian children’s and Korean children’s TPSs. For example, considering the whole context of children’s TPS, the contexts of “someone pushes or pulls something” and “someone/something is floating in the air or not moving because there is no gravity” were the most frequent ones, as a “force” and as a “no force” situation respectively, in the case of Australian children, while “a sort of energy is provided into someone/something and they can be active/working” and “a sort of energy is not provided into someone/something and they cannot be active/working”, were most frequent in the case of Korean children. These differences are very likely the consequence of different everyday meanings for the word “force” in the two cultures. In addition, it appears that these children’s TPS affect their judgement of “force” and “no force”.     

Explaining the gap in charter and traditional public school teacher turnover rates

This study uses national survey data to examine why charter school teachers are more likely to turnover than their traditional public school counterparts. We test whether the turnover gap is explained by different distributions of factors that are empirically and theoretically linked to turnover risk. We find that the turnover rate of charter school teachers was twice as high as traditional public school teachers in 2003–04. Differences in the distributions of our explanatory variables explained 61.0% of the total turnover gap. The higher proportions of uncertified and inexperienced teachers in the charter sector, along with the lower rate of union membership, were the strongest contributors to the turnover gap. Charter school teachers were more likely to self-report that working conditions motivated their decisions to leave the profession or move schools, although we found no measurable evidence that the actual working conditions of charter and traditional public schools were different.     

催化剂自动加料系统在催化裂化装置中的应用

本文述及了利用装置D C S系统实现催化裂化装置催化剂自动加料系统控制的方法,同时阐明了催化剂自动加料系统的工艺流程、主要工艺参数、控制程序逻辑框图及系统的工艺操作。     

Tissue polypeptide specific antigen in the post therapeutic evaluation of patients with ovarian and colorectal cancer

The study was designed to evaluate the significance of tissue polypeptide specific antigen (TPS) in patients with histologically proven ovarian and colorectal cancer following treatment along with CA125 (in ovarian cancer) and CEA (in colorectal cancer). Patients were grouped as follows:

徕卡TPS800全站仪在市政工程放线中的应用与分析

道路放样是整个道路测量工作中的一个重要环节,传统的作业方法不但费时费力,而且难以解决特殊情况下的临时加桩问题。使用GPS-RTK进行放线,会由于道路两边有建筑物的遮挡接收不到卫星信号或者信号较差,使工作耽误。为此,选择能够有效提高作业效率的带有道路放样软件的徕卡TPS800全站仪,不仅适用于公路、铁路的放样测量,还可以用于管线、管道、河道等线状工程的放样测量工作。     

基于TPS40100芯片开关电源的设计

随着电力电子的不断发展,开关电源也取得了不断的突破,特别是成本低、效率高、体积小的特点更是具有重要的使用价值。本文是一款基于TPS40100芯片设计的开关稳压电源,通过计算得出合理的滤波器件配合芯片工作,并简单描述了过流保护,可调节电压输出的原理。