Detection of central nervous system tissue in meat and meat products with a newly developed immunoassay selective for Myelin proteolipid protein

Bovine spongiform encephalopathy (BSE) is most likely transmitted by the consumption of central nervous system (CNS) tissue of infected animals. In this study, an immunochemical assay for CNS in meat and meat products was developed using an antibody against Myelin proteolipid protein (PLP), which is very specifically expressed in the CNS. Solvent extraction of CNS-contaminated meat yielded a highly enriched PLP fraction. Subsequent Western blot analysis specifically detected the PLP band at 29 kDa. The detection limit for unprocessed CNS in raw meat was less than 0.025% and the quantification limit was calculated to be 0.049%. The PLP epitope was relatively stable during storage at 5 °C or –21 °C and during heating at 75 °C and 95 °C. Amounts of 0.1% CNS could be reliably detected in cooked bologna type sausage, cooked liver sausage and fermented sausage. Thus, the new assay allows highly specific and sensitive determination of CNS contaminations in meat and meat products.     

TBS引领选煤工艺的跨越式发展

介绍了TBS、螺旋分选机、煤泥重介旋流器等几种粗煤泥分选设备,并对上述粗煤泥分选技术作了比较;结合TBS在选煤工艺中的应用实例,说明TBS必将推动我国选煤工艺(尤其是炼焦煤选煤工艺)实现跨越式发展。     

TBS分选机在洗煤厂处理粗煤泥中的试验研究

针对螺旋分选机分选粗煤泥效果不佳,决定采用TBS分选机进行粗煤泥分选试验,试验结果表明,TBS分选机相比于螺旋分选机分选粗煤泥所得精煤灰分平均降低了2.35%,尾煤灰分提高了1.26%,精煤产率提高了1.5%~2%。TBS分选机的应用对于提高精煤质量、产率和选煤厂经济效益具有显著的效果。     

入侵检测系统与PC安全的研究

IDS（Intrusion detection system)和PC安全都是当前网络安全的热点。首先针对PC Firewall的弱点验证了IDS对于PC安全的必要性和重要性，然后在现有入侵检测技术的基础上提出了PC上IDS的一种构建方案及其实现，将IDS有机地融入PC安全领域。     

XGR系列干扰床分选机的研制与应用

介绍了XGR系列干扰床分选机的结构特点及其工艺系统,并阐述了影响粗煤泥分选机分选效果的主要工艺因素,结合选煤厂应用实例,指出了适合我国煤质特点和生产实际的新型高效的干扰床分选设备发展方向。     

粗煤泥分选的探讨

分析了无粗煤泥分选系统的重介选煤厂普遍存在的一些问题,对常见的粗煤泥分选设备、粗煤泥分选及常见工艺流程进行了介绍,并阐述了粗煤泥分选的优点。     

重介质旋流器选煤相关问题的探讨

结合重介选煤厂设计的实践经验,对重介旋流器选煤的几个相关问题进行了分析和总结,并叙述了在选煤厂设计过程中如何合理选择重介旋流器选煤工艺的几点建议。