正交试验优化无亚硝午餐肉工业化生产工艺

以红曲红、维生素C、异抗坏血酸钠、柠檬酸代替亚硝酸盐研制开发无亚硝午餐肉。结合感官评定方法,采用单因素试验及正交试验分析红曲红、维生素C、异抗坏血酸钠、柠檬酸添加量对产品品质的影响。结果表明:无亚硝午餐肉的工艺配方参数为红曲红0.010%、维生素C 0.015%、异抗坏血酸钠0.02%、柠檬酸0.07%。

无亚水质金属切削液介绍

亚硝酸盐的防锈性能好、价格便宜，一直成为传统的防锈添加剂。但发现亚硝酸的胺盐有致癌作用后。加紧对无亚水质金属切削液的研究和开发，文中着重介绍了水质金属切削液的组成、作用，以及国内对无亚水质金属切削液的研究成果和应用情况。

轴承磨削用切削液性能的比较

本文对现有的三种不同类型的磨削液进行了质量、理化性能、实际使用效果的比较,最后优选出各项性能优良的轴承磨削用的无油无亚硝酸钠切削液。

On the systematic position of Cacosyndya Kirby(Hymenoptera:Tenthredinidae)with redescription of Cacosyndya dimorpha Freymuth

A peculiar sawfly genus from middle Asia,Cacosyndya Kirby,1883 and the type species Cacosyndya dimorpha(Freymuth,1870)are redescribed and illustrated.The systematic position of this genus in Tenthredinidae is discussed.The females in the genus are apterous,the only known apterous Symphytan,but the male is normally winged.Cacosyndya is not a member of Fenusinae or Heterarthrinae,but a member of Phymatocerini of Blennocampinae,Tenthredinidae as shown by the structure of the antenna,wing venation and body structure.The relationship between Cacosyndya and members of Phymatocerini is briefly discussed.