注水井分散数据统一管理平台的应用

目前编制油水井方案,所涉及的数据较为分散,不易管理.针对这个问题,借助.NET、SVG等技术和数据库,在充分研究了石油行业海量数据管理平台的数据标准、系统架构和实现模式的基础上,开发出了注水井分散数据统一管理平台.平台在采油二厂的性能测试表明,平台对分散数据的管理具有可行性和高效性.     

复杂工况下连轧过程数值仿真系统研究

针对板、管、棒材连轧过程中出现的工艺制度难以确定、实验研究理论性不强等问题,以非线性有限元为内核,通过机型选择、系统仿真、工艺决策等措施,提出了确定最佳工艺制度的理论和方法.     

两个不同混沌系统的完全同步

采用积极控制的方法来实现两个不同混沌系统的完全同步,这个方法被应用到一个新的混沌系统和一个更改的Chua′s系统中,数值模拟阐述了控制方法的有效性。     

季铵盐型壳聚糖衍生物的合成与抗菌性能

以壳聚糖为载体,以硝酸铈铵作引发剂,用甲基丙烯酰氧乙基-十六烷基-二甲基溴化铵为活性单体进行接枝共聚反应制备季铵盐型壳聚糖衍生物.用核磁共振和红外光谱对接枝产物进行了表征和测定,用悬菌定量实验研究了其抗菌性能.结果表明:甲基丙烯酰氧乙基-十六烷基-二甲基溴化铵通过其双键可以接枝到壳聚糖表面;所制备的壳聚糖季铵盐衍生物对大肠杆菌、金黄色葡萄球菌以及白色念珠菌在振荡作用15 m in后,平均杀菌率分别为99.99%、99.99%和99.96%.     

Swelling behaviors and pervaporation properties of CA/PAN composite membranes for separation of caprolactam/water mixtures

The composite membranes with cellulose acetate (CA) as the separating layer material and polyacrylonitrile (PAN) as the supporting layer material were prepared for separating caprolactam (CPL) from CPL/water mixtures by pervaporation technique. The swelling experiments were carried out to investigate the effects of swelling time and CPL concentration on the degree of swelling. The results showed that the CA membrane reached swelling equilibrium within 24 h, and the degree of swelling first slightly decreased then increased with the increase of CPL concentration in the feed under the experimental conditions. Respectively comparing flux with permeance, and separation factor with selectivity, we found out that the separation performance of the CA/PAN composite membrane is more strongly dependent on its hydrophilic/hydrophobic nature as well as on the effects of operating parameters, such as feed composition concentration and feed temperature.     

群的右陪集逆半群

研究群的所有右陪集构成的集合,证明它在给定的乘法下是逆半群,并研究它的幂等元性质;同时给出它为Clifford半群的充要条件.     

Enhancement of monacolin K production via intergeneric protoplast fusion between Aspergillus terreus and Monascus anka

Intergenric protoplast fusion between Aspergillus terreus CA99 and Monascus anka M-3, the high and low producers of monacolin K respectively，was performed for enhancement of monacolin K production. The 24-hour-old mycelia of A. terreus CA99 and M. anka M-3 were treated with 0.5% lywallzyme, 0.3% snailase and 0.3% cellulase at 34℃ for 5 h and at 30℃ for 3.5 h, and their protoplasts formation reached 1.76×10⁷/mL and 1.68×10⁷/mL respectively. Parental protoplasts were irradiated with a 30 W UV light away from 30 cm for 3 min and then mixed. The mixture was incubated with 30% PEG 6000 for 15 min. The reviving fusants were isolated on the regeneration plates. Of the 363 fusants isolated, over 100 showed enhanced monacolin K production compared with the parental strain M. anka M-3. Ten of them produced monacolin K about 1.6-fold of that M.anka M-3 does and the monacolin K titer of two fusants (F49 and F104) increased by about 1-fold. The monacolin K yields of F49 and F104 were 460 μg/mL and 457 μg/mL respectively. In optimized fermentation medium, the monacolin K titer of F49 reached 1216 μg/mL.     

某岩质陡崖边坡崩塌地质灾害成因及治理设计分析

以某岩质陡崖边坡崩塌地质灾害治理工程项目为依托,对崩塌地质灾害形成的主要诱发因素,如地形条件、地层岩性、降雨以及人类活动等进行了比较详细的介绍,为事故原因的定性提供相关依据.同时,针对现场实际情况及边坡稳定性分析结果提出一系列治理措施,为今后的具体工程实践提供相关理论依据及技术参考.     

"杨氏模量测定仪"的调节中容易忽视的问题及解决办法

结合实验教学，讨论了“杨氏模量测定仪”装置存在的一个容量被大家忽视的重要问题－－“杨氏模量测定仪”立柱的铅直，阐述了对现有仪器的调节方法，并提出了对“杨氏模量测定仪”装置的改进建议。     

面阵CCD空间滤波技术测量颗粒流速度场分布

为解决线阵CCD空间滤波技术无法直接测量滚筒颗粒流速度场的整体分布,并且难以准确测量颗粒流中具有复杂速度变化的单点区域的问题,提出了基于面阵CCD空间滤波技术的滚筒颗粒流测量方法。通过对采集图片进行分割,模拟子滤波器,对每个模拟子滤波器区域分别进行空间滤波测速,最终得到滚筒颗粒流速度场整体分布。对于滚筒颗粒流中具有复杂速度变化的边壁区域采用正交算法进行速度矢量和运算,避免了角度测量的误差,从而提高了对单点位置速度测量的精度。最后,搭建了实验装置,对测量方法进行了实验验证,并分析了方法时空分辨率,标定了方法精度。研究结果表明,该方法能够测量滚筒颗粒流速度场整体分布,测量误差小于2%。