我国生乳国家标准主要指标对比

本文通过概述我国生乳国家标准的历史演变过程,整理分析我国1977-2010年生乳国家标准,从范围、定义、技术要求等几个方面进行比较,分析研究各指标变化情况,并比较我国生乳国家标准与世界上几个国家生乳标准之间的差异,为我国下一次生乳国家标准修订提供借鉴。     

超重力旋转填料床中柠檬酸钠缓冲液吸收二氧化硫(英文)

Absorption of SO2 from a SO2/air mixture with sodium citrate buffer solution was investigated using a rotating packed bed(RPB) in laboratory scale.The effects of operating parameters,such as the rotation speed of RPB,liquid-gas ratio,inlet gas flow rate,inlet concentration of SO2 in flue gas,sodium citrate buffer concentration and initial pH of absorption solution,on the SO2 concentration in the absorption solution or removal efficiency of SO2 were examined.Incremental rate of sulfate radical ions in the absorption solution was also examined.Experimental results indicate that the efficiency of this regenerative process will be improved by using RPB under appropriate operating conditions,and the generation of SO2-4 will be restrained in the process in RPB.     

全基因组测序技术在细菌耐药性检测中的研究进展

细菌耐药性严重威胁人类健康和公共卫生安全,特别是菌株的多重耐药问题已是全球关注的热点话题。全基因组测序技术作为一种新型技术,在已知耐药基因型检测、耐药表型预测和潜在耐药基因确定等方面具有较好的敏感性和特异性。现将全基因组测序技术在细菌耐药性中的研究进展进行综述。