Inactivation Kinetics of Food Poisoning Microorganisms by Carbon Dioxide and High Hydrostatic Pressure

The inactivation kinetics of food poisoning microorganisms using a combined treatment of carbon dioxide (CO₂) with high hydrostatic pressure (HHP) was investigated. Staphylococcus aureus, Fusarium oxysporum, and Fusarium sporotrichioides were totally inactivated by a combined treatment of carbonation and HHP at 500 MP_a. Bacillus subtilis, a spore forming bacteria, were not completely inactivated after the combined treatment. The microorganisms treated by carbonation and HHP were exponentially reduced in a pressure range and the D_p ‐value, the Z^p‐value, and the activation volume were determined. UV absorbing materials leaked from injured cells. Morphological changes of the cells were observed by scanning and transmission electron microscopy.     

甘肃省较大级别食物中毒事件分析

目的:分析2004—2011年甘肃省较大级别食物中毒事件特征,为减少较大级别食物中毒事件的发生提供科学依据。方法:对甘肃省2004—2011年所报告的较大级别食物中毒事件进行描述性流行病学分析。结果:2004—2011年共报告较大级别食物中毒事件32起,中毒人数672人,死亡52人,病死率为7.74%。报告事件高峰在6—10月,其中8月份报告最多;中毒场所以家庭最多,占总起数的75.00%;中毒原因以化学性食物中毒为主,占总起数的27.68%,且化学性食物中毒死亡人数也最多,占总死亡人数的65.38%。结论:化学类和有毒植物类食物中毒是甘肃省较大级别食物中毒发生和死亡的主要原因。     

蜡状芽孢杆菌(Bacillus celreus)污染及其对食品安全的影响

蜡状芽孢杆菌是常见的食品污染菌，在工业化社会中正成为日益重要的食物病原菌。它能产生一种呕吐毒素和多种肠毒素，主要引发呕吐和腹泻型食物中毒。与蜡状芽孢杆菌同属的苏云金杆菌也能产生类似的肠毒素，近来发现它可能与食品中毒有关。我国应当加强对蜡状芽孢杆菌的监测和研究。     

R601配制釜泄漏对双氧水生产的影响

介绍配制釜泄漏对双氧水生产的影响 ,并查找其原因进行处理 ,得到了满意的效果     

An intervention to reduce kerosene-related burns and poisonings in low-income South African communities.

Objective: Unintentional injury rates in low- and middle-income countries are up to 50 times higher than high-income nations. In South Africa, kerosene (paraffin) is a leading cause of poisoning and burns, particularly in low-income communities where it serves as a primary fuel for light, cooking, and heating. This study tested a community-based intervention to reduce kerosene-related injury risk. The intervention used a train-the-trainers model, whereby expert trainers train local paraprofessionals, who in turn deliver educational materials to community residents. The intervention was theory-driven, pragmatically motivated, and culturally sensitive. Design: Prospective quasi-experimental intervention design with nonequivalent case versus control groups. Main Outcome Measures: Three primary outcome measures were considered: self-reported knowledge of kerosene safety, observed practice of safe kerosene use, and self-reported recognition of risk for kerosene-related injury. Results: ANOVA models suggest a large and significant increase in self-reported kerosene-related knowledge in the intervention community compared to the control community. There were smaller, but statistically significant changes, in kerosene-related safety practices and recognition of kerosene injury risk in the intervention community compared to the control community. Conclusion: The intervention was successful. A train-the-trainers model might be an effective educational tool to reduce kerosene-related injury risk in low-income communities within low- and middle-income countries. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

毒鼠强中毒检验研究概况及进展

本文概述了十年来毒鼠强中毒检验研究成果及进展。简要描述了四种萃取净化方法，以及定性定量检验方法的特点、检测水平和应用。     

锰系钙钛矿型氧化物的催化性质及耐SO_2性能

考察了Mn系钙钛矿型催化剂La_(1-x)Sr_xMn_(1-y)Me_yO_3(x=0,0.1,0.2,0.3,0.4;y=0,0.2,0.4,0.6)对CO完全氧化的催化活性及耐SO_2性,用TPR方法研究了催化剂的可还原性,用FTIR研究了SO_2在催化剂表面上的吸附,结果表明:Mn系钙钛矿型催化剂按吸附机理催化CO为CO_2,B位低价态Mn离子越多,催化剂吸附氧能力越强,TPR温度越低,催化剂可还原性越大,催化活性越好;反之,相反,SO_2强吸附在B位Mn离子上,使催化剂吸附氧能力消失造成催化剂不可逆失活。     

炮烟中毒事故应急救援预案的编制

在对应急救援预案编制分析的基础上，结合爆破作业中可能出现的炮烟中毒事故，研究了炮烟中毒事故应急救援预案的具体编制方法，以便能在事故发生的第一时间，积极采取正确的应急措施，将事故对人员和财产的损失降到最低程度。另外，文章以某矿炮烟中毒事故为例，编制了应急救援预案，以供相关企业参考。     

共享以太网反监听新技术的研究与实现

网络监听极大地威胁着网络的安全，如何检测发现监听行为至关重要。根据共享以太网的监听原理，克服已有检测方法的缺陷，提出并实现了基于“毒害ARP缓存”攻击的检测技术。这种新的检测方法对高级监听器依然适用。