电子调速器在柴油发电机组上的应用

本文系统介绍了ＰＤ－１型电子调速器的原理性能,并根据实际应用情况对电子调速器在柴油发电机组上如何进行调整、正确与柴油机油泵连接等问题进行了阐述。     

Ectoine对Cu—Zn型SOD酶热稳定性的影响

研究了Ectoine对Cu-Zn型SOD酶在热处理条件下的保护作用．研究结果表明，Ectoine对经热处理的Cu-Zn型SOD酶有明显的保护作用．0．7mmol／L的Ectoine可使经50、90、100℃处理的Cu-Zn型SOD酶的相对酶活力分别提高25．7％、19．0%、13．2％；0．5mmol／L的Ectoine在60℃下可使酶活提高26．5%；0．3mmol／L的Ectoine在80℃下可使酶活提高22．1％，0．1mmol／L的Ectoine在70℃下可使酶活提高28．6％．Ectoine与脯氨酸、甘油、海藻糖、谷氨酸、甜菜碱，在相同热处理条件下比较，Ectoine对Cu-Zn型SOD酶的热保护作用最为明显，且用量最少．     

植酸酶植物基因工程载体的构建

通过PCR方法从植酸酶基因克隆载体PUC18／phyAI中扩增出Aspergillus.ficuumAS3.324植酸酶（phyA）基因,经酶切连接后克隆到植物中间载体pBI121,获得含AS3.324植酸酶基因的质粒pBI121/phyAⅡ。用冻融法将pBI121/phyAⅡ导入表达载体根 农杆菌LBA4404中。经过抗生素筛选、PCR检测,证明得到了正确表达载体－－LBA4404／pBI121/phyAⅡ,此表达载体可用于植酸酶基因转化烟草的研究。     

双歧杆菌厌氧培养及耐氧驯化的研究

用４种不同驱氧方式的缸内厌氧法培养双歧杆菌，比较其厌氧培养效果。对厌氧的双歧杆菌进行耐氧驯化，耐氧化明显提高，经生理鉴定证明，驯化后的菌株与未经驯化的菌株相比，生理学特性没有发生变化。     

传统液压机的PLC改造

对贴面热压机进行了PLC改造.使热压机可实现手动和自动动作,保压延时,电气联锁保护等功能.经两年多的运行证明,改造是成功的.     

S528树脂砂再生线的电气控制系统的改进

本文简述了S528树脂砂再生线的组成及存在的问题,介绍了该线设备及电气控制系统改进的情况。     

循环流化床气固传质实验研究

This study is devoted to gas-solid mass transfer behavior in heterogeneous two-phase flow. Experiments were carried out in a cold circulating fluidized bed of 3.0m in height and 72mm in diameter with naphthalene particles. Axial and radial distributions of sublimated naphthalene concentration in air were measured with an online concentration monitoring system HP GC-MS. Mass transfer coefficients were obtained under various operating condition, showing that heterogeneous flow structure strongly influences the axial and radial profiles of mass transfer coefficients. In the bottom dense region, mass transfer rate is high due to intensive dynamic behavior and higher relative slip velocity between gas and clusters. In the middle transition region and the upper diluter region, as a result of low mass transfer driving force and the influence of flow structure, mass transfer rate distribution becomes non-uniform. In conclusion, among the operating parameters influencing mass transfer coefficients, the superficial gas velocity is the most important factor and the solid circulation rate should be also taken into account.     

基于Petri网的超媒体模型HPN

提出一个基于Ｐｅｔｒｉ网的超媒体形式模型ＨＰＮ。着重给出ＨＰＮ模型的形式化定义并举例说明，阐述ＨＰＮ模型对超媒体若干性质的刻画。