射频识别系统中高频读写器的研究与开发

介绍了射频识别(RFID)系统中读写器的设计开发以及RFID系统中S6700芯片的通信协议,同时给出了读写器硬件系统的结构、底层驱动和软件工作流程。读写器采用ATMEL公司的ATmega128单片机和TI公司的13.56MHz频段下的多协议收发芯片S6700。     

高等教育管理引进ISO9000族标准的研究综述

我国高等教育管理引进ISO9000族标准的研究从以前的实践研究和国外经验的介绍开始,到现在已经转入理论研究为主,并主要集中研究引进的可行性与必要性、基本术语界定、标准体系的构建.虽然研究已经比较深入,但是依然存在尚待进一步深入研究的问题,如引进领域的确定,对实践的总结与反思等.     

Optimized protocol for the biocompatibility testing of compression stockings and similar products with close skin contact in vitro

Biocompatibility of six different compression stockings and cytotoxic effects were determined using HaCaT keratinocytes, L929 mouse fibroblasts, primary adult and juvenile keratinocytes Cells were quantified using a luminometric ATP assay and the photometric BCA test. Cytotoxic effects were determined by LDH release. An area-based extraction ratio of 1.25 cm²:mL could be shown to be superior to the weight-based extraction of test material. Extraction medium should be an acidic sweat solution as this helps to recreate in vivo conditions. Monolayer cultures of HaCaT keratinocytes or L929 mouse fibroblasts should be used for testing. Primary adult keratinocytes or primary juvenile keratinocytes can also be used. For the latter, testing under DMEM with FCS is recommended to achieve comparable results. It was found that the compression stockings tested exhibited no negative influence on cell viability in vitro and no direct cytotoxic effects measured as release of LDH. Hence, good biocompatibility could be asserted.     

Die Containerverbindung für die neue indische Antarktis‐Forschungsstation

Container connection for the New Indian Antarctic Research Station – A new type of connection for complex container buildings. Bharati, the New Indian Antarctic Research Station, consists of a self‐supporting structure of customized ISO shipping containers. Up to eight ISO corner fittings per node are three‐dimensionally interconnected forming a multi‐storey building, so that the structural bracing is entirely given by the containers. The therefore necessary container connections are the key to an efficient structure. It consists of simple parts: bolts, shear blocks, anchor blocks, stackers and thread bars. In combination these elements guarantee force transmission in all directions by mounting them into the openings of the ISO corner fittings. All parts can easily be installed by hand using a wrench. The efficient use of containers did not only reduce the building material, but also the carbon dioxide emission on all transport activities. Furthermore, the new container connection and the therewith good utilization of available space within the façade shell reduces operation costs during the entire life time of the building.     

Trace level analysis of reactive ISO 14687 impurities in hydrogen fuel using laser-based spectroscopic detection methods

Hydrogen fuelled vehicles can play a key role in the decarbonisation of transport and reducing emissions. To ensure the durability of fuel cells, a specification has been developed (ISO 14687), setting upper limits to the amount fraction of a series of impurities. Demonstrating conformity with this standard requires demonstrating by measurement that the actual levels of the impurities are below the thresholds. Currently the industry is unable to do so, for measurement standards and sensitive dedicated analytical methods are lacking. In this work, we report on the development of such measurement standards and methods for four reactive components: formaldehyde, formic acid, hydrogen chloride and hydrogen fluoride. The primary measurement standard is based on permeation, and the analytical methods on highly sensitive and selective laser-based spectroscopic techniques. Relative expanded uncertainties at the ISO 14687 threshold level in hydrogen of 4% (formaldehyde), 8% (formic acid), 5% (hydrogen chloride), and 8% (hydrogen fluoride) have been achieved.     

浓香型白酒酿造过程中“关键质量控制点”的确定与控制分析

中国白酒历史悠久,工艺独特,其中浓香型白酒占全国白酒销量的较大比例。为控制浓香型白酒的酿造质量,满足消费者对白酒产品的质量需求,本文以安徽金种子酒业股份有限公司浓香型白酒为例,结合HACCP体系过程及关键点控制与ISO9000标准过程质量控制,对直接和间接影响浓香型白酒酿造质量的各环节进行分析。浓香型白酒酿造程序包括原辅料、大曲、蒸煮和糊化、配糟入池、出池蒸馏等,确定了酿造关键质量控制点、质量和食品安全管理的主要危害因素及严重危害因素,并进一步针对性地建立了相应的预防和控制措施,以总结白酒企业实施预防性控制措施的方法,为企业的原酒酿造管理提供参考。     

贯标工作的几个关键

以作者从事质量体系审核工作的实践为基础,表明了对贯彻ISO9000工作中几个关键问题的看法。     

精益六西格玛的有效实施

精益六西格玛管理是一项以顾客为中心、以数据为基础,以追求近乎完美为目标的管理理念和方法。该文从实际管理经验出发,提出了管理理念、实施范围、员工稳定以及总结复盘等结论,并特别阐明了精益六西格玛和ISO9001的关系;最后描述了理想的精益六西格玛的管理者形象。     

ISO 9001:2000与成熟度模型的比较研究

本文对ISO 9001:2000质量体系与成熟度模型(CMM)进行了比较研究,分析了两者之间的相似之处和差异,并得出结论:对软件企业而言,这两种用于质量保证的模式都是可行的,但两者应相互结合、互为补充.根据ISO 9001:2000质量体系与CMM模型的特点,提出了基于ISO 9001:2000与CMM的软件开发流程模型.     

浅谈对ISO22000标准的理解和应用

ISO22000《食品安全管理体系——对整个食品链中组织的要求》是国际标准化组织近期将正式发布的对全球食品安全管理体系的一个统一的标准,实施这一标准可使食品生产加工企业避免因不同国家的不同要求而产生的摩擦,该标准被视为一个集中、统一和整合的食品安全体系,文中提供了该标准基本信息和应用建议。