Recent developments in antimicrobial and antifouling coatings to reduce or prevent contamination and cross-contamination of food contact surfaces by bacteria

Illness as the result of ingesting bacterially contaminated foodstuffs represents a significant annual loss of human quality of life and economic impact globally. Significant research investment has recently been made in developing new materials that can be used to construct food contacting tools and surfaces that might minimize the risk of cross-contamination of bacteria from one food item to another. This is done to mitigate the spread of bacterial contamination and resultant foodborne illness. Internet-based literature search tools such as Web of Science, Google Scholar, and Scopus were utilized to investigate publishing trends within the last 10 years related to the development of antimicrobial and antifouling surfaces with potential use in food processing applications. Technologies investigated were categorized into four major groups: antimicrobial agent–releasing coatings, contact-based antimicrobial coatings, superhydrophobic antifouling coatings, and repulsion-based antifouling coatings. The advantages for each group and technical challenges remaining before wide-scale implementation were compared. A diverse array of emerging antimicrobial and antifouling technologies were identified, designed to suit a wide range of food contact applications. Although each poses distinct and promising advantages, significant further research investment will likely be required to reliably produce effective materials economically and safely enough to equip large-scale operations such as farms, food processing facilities, and kitchens.     

大缸径天然气发动机点火线圈的开发

根据天然气发动机点火系统的特点和在油田工作的要求，本文简要介绍了在开发大缸径天然气发动机用点火线圈时对提高点火能量，安全性和可靠性方面所采取的措施。     

质子交换膜燃料电池的膜电极及其湿度特性

质子交换膜燃料电池的膜电极结构与电池性能密切相关，膜的湿度直接影响膜的性能。膜内水的迁移受到多个参数的影响：较大的电流密度使水的净迁移量下降；电池温度的提高将增大电池水平衡的电流密度；提高湿化程度可以减小膜的欧姆损失。膜内的湿度不足以保证燃料电池正常工作，就必须采用湿化方法。水的迁移过程涉及到电池的压降和温度变化。实际的湿度状态是各种因素的综合．电池的工作条件最终决定了它自身的水平衡状态。     

第二催化裂化装置再生器开裂失效分析

对茂名石化公司第二催化裂化装置２０ｇ钢制再生器的开裂进行了失效分析，探讨了失效的原因。     

高温变换动力学的实验研究

本文谈及一氧化碳变换动力学的实验和研究。实验方法、手段、条件、控制、分析等均有所论述。特别是在数据处理方面有所侧重。通过一定量的实验数据得出 C_9催化剂一氧化碳变换反应的速度方程。该方程可用于工业反应器的模拟,设计和优化。     

清式建筑墙身摆砌技术

清官式建筑墙身做法，按使用砖料加工不同及做法不一，通常有干摆、丝缝、淌白、糙砌等类。对于民居小房，有更简单的碎砖压泥一类的做法。至于用城砖糙砌墙，其要求和操作法与一般建筑墙身又有些不同。本文介绍三种传统工艺做法。     

浅谈变频调速在石化生产装置中的应用与选择

叙述了变频调速设备在石化生产装置中调速、节能的基本理论，并对设计、选择和安装变频调速设备作了阐述。     

寒冷地区太阳能油库建筑设计研究

本文成果首次在寒冷地区把油库建筑设计与被动式太阳房技术相结合,充分利用了油的蓄热性能,提高太阳节能率和太阳能供暖效益。建筑构造简单合理,造价低廉,并且采用外窗保温反射板提高了太阳能综合利用效果。加强了安全和防火性,改善了劳动卫生和管理条件,解决粘油冬季出库难问题,提高了劳动生产率,寻求到了太阳能油库建筑设计的优化理论,开辟了建筑节能的新途径。     

对柳州市防御大于50年一遇洪水措施的探讨

分析了广西柳州“９６·７”，“９４６”洪水组成，提出了在柳江上游建洋溪、江底、拉友、落九等防洪水库，指出防洪水库蓄洪不贮洪，下游洪峰过后则放空水库，水库淹没是暂时的，并对临时淹没提出处理意见，这样可把柳州市防洪标准从５０年一遇提高到２００年一遇。