简述空调环境微生物传播及防治

简要论述了一般空调环境下的主要微生物种类及其主要传播方式，分析了影响其传播的因素，同时介绍了现在常用的防治方法，提出了一些改进的意见。     

胚芽米加工系统及工程应用探讨

近些年来,随着中国国民生活水平的不断提高,以及对健康饮食观念的不断增强,胚芽米作为一种纯天然的功能性大米,对于大米的适度加工、营养保留、附加值提升均具有重要意义,且市场前景广阔.本文重点介绍了胚芽米加工系统及工程应用,旨在为胚芽米的加工品质控制与基本工艺设计提供参考.     

大豆皂甙A的分离与ESI/MS分析

大豆胚芽中皂甙的含量是子叶的6～14倍,soyasaponin A仅存在于胚芽中.以硅胶柱色谱和制备高效液相色谱法从大豆胚芽的乙醇提取物中分离出二种A组皂甙,进行定性反应.UV和ESI/MS分析确证其结构为soyasaponin A     

A semi‐analytical locally transversal linearization method for non‐linear dynamical systems

An numeric‐analytical, implicit and local linearization methodology, called the locally transversal linearization (LTL), is developed in the present paper for analyses and simulations of non‐linear oscillators. The LTL principle is based on deriving the locally linearized equations in such a way that the tangent space of the linearized equations transversally intersects that of the given non‐linear dynamical system at that particular point in the state space where the solution vector is sought. For purposes of numerical implementation, two different numerical schemes, namely LTL‐1 and LTL‐2 schemes, based on the LTL methodology are presented. Both LTL‐1 and LTL‐2 procedures finally reduce the given set of non‐linear ordinary differential equations (ODEs) to a set of transcendental algebraic equations valid over a short interval of time or over a short segment of the evolving trajectories as projected on the phase space. While in the LTL‐1 scheme the desired solution vector at a forward time point enters the linearized differential equations as an unknown parameter, in the LTL‐2 scheme a set of unknown residues enters the linearized system as parameters. A limited set of examples involving a few well‐known single‐degree‐of‐freedom (SDOF) non‐linear oscillators indicate that the LTL methodology is capable of accurately predicting many complicated non‐linear response patterns, including limit cycles, quasi‐periodic orbits and even strange attractors. Copyright © 2001 John Wiley & Sons, Ltd.     

The effect of quinoa germ on the quality properties of fresh whey-less cheese made by ginger (Zingiber officinale) extract as a coagulant

The effect of ginger extract (GE), as a milk coagulant, was investigated on the physicochemical, proteolysis, textural profiles and sensory properties of whey-less cheese containing quinoa germ powder (QGP; 0, 3, 6 and 9%) during storage. The results showed that with increasing QGP, the dry matter, fat, soluble nitrogen at pH 4.6 and free tryptophan and tryptophan amino acids increased and protein content decreased. Consequently, it is suggested that using 6% quinoa germ in the production of whey-less cheese made by GE as a coagulant can give the most desired product with no adverse effects on the quality and sensory properties.     

开折的无穷小稳定性及其在分支问题中的应用

文献（６）讨论了Ｃ＾∞映射芽关于群Ａ的一个子群的万有开折性问题,本文给出了此子群之下开折无穷小稳定的条件,并利用这种思想,给出了分支问题无究小稳定开折的定义,证明了它与分支问题的万有开折是等价的,从而得到一个判别万有开折的准则。     

大豆胚芽中大豆皂甙B的分离与鉴定

大豆胚芽中皂甙的含量是子叶的6－14倍,soyasaponin A和soyasaponin Ba仅存在于胚芽中,从大豆胚芽的乙醇提取物中提取总糖甙,以硅胶柱层析和反相制备相色谱分离出两种B组皂甙,以UV,IR,ESI／MS和^13C,^1H,DEPT NMR分析确证其结构为soyassaponin Ba和Bb,实验证明大豆皂甙的ESI／MS裂解特征与FD－MS和FAB－MS不同,ESI／MS特别适于皂甙等强极性难挥发的糖甙化合物的结构解析。     

高浓度进水条件下焦化废水A/O生物脱氮工艺的开工调试

阐述了使用A-O生物脱氮法对原有SBR工艺进行改造的开工调试情况,包括在高浓度进水条件下细菌的驯化过程,以及生产工艺参数的调试和优化控制。投产后运行结果显示,出水酚和氰的处理效果较改造前略有提高,COD和氨氮的处理效果得到了显著提高,外排废水中酚、氰、COD和氨氮等指标均稳定达到国家二级标准。     

光滑函数芽关于右等价群有限决定的一个注记

给出了关于右等价群有限决定的光滑函数芽在函数芽运算下仍保持有限决定的一些充分条件.     

碱性条件下冷却水系统微生物的有效控制

通过分析循环水水质,探讨了高ｐＨ值（８２～９０）条件下氨厂循环水系统液氯杀菌的有效性以及异噻唑啉酮（ＸＦ９９０）、稳定性ＣｌＯ２（ＮＫＣ６５０）、季胺盐（ＺＳ６０１）杀菌剂的合理选配,并取得了一些使用新药剂、新方法有效控制微生物的经验。