基于ARM的CAN-以太网互联系统的设计

设计了基于ARM的CAN-以太网互联关系,提出了工业现场总线与以太网互联的方法,介绍了以太网与CAN总线之间协议转换网关的设计与实现,给出了系统的硬件结构和软件设计流程.该设计为信息网络与控制网络集成提供了一种实用的解决方案.     

基于可视化工作流的高校勤工助学管理系统

本文介绍一种基于可视化工作流的高校学生勤工助学管理系统的设计与实现.本系统针对高校勤工助学工作业务流程特点,通过分离业务管理和流程管理,基于可视化工作流,利用Java EE以Jsp+SpringMVC+Hibernate技术实现.实施系统的后台数据显示,本系统的使用,显著降低了业务审批时间,提高了管理工作效率,促进了高校勤工助学管理工作的流程化、规范化和便捷性.     

‘Flash pasteurization’ of contaminated streams using a direct contact gas-fired water heater

A commercial direct contact gas-fired water heater was modified for in-lab evaluation of microbial reduction and temperature consistency at various water flow rates. The water heater was modified so that a contaminated input stream could be treated using 50-gal (189.3-l) bulk feed tanks. A final reservoir tank was bypassed using six sampling ports placed in pairs along three locations in the vertical heating column with which to test the efficacy of a single pass at different positions in the heating zone. Temperature probes were utilized to follow water temperature at 8, 10, and 12 gal min⁻¹ (30.3, 37.9, and 45.4 l min⁻¹). When using inoculated water streams, we obtained 4–7 log₁₀ cycle reductions of various micro-organisms tested suggesting that this may have potential use in situations where water recycling is of interest in food processing environments.