唐钢1700mm工程飞剪系统

本文简单介绍了唐钢1700mm工程切头剪系统的构成,详细阐述了切头剪系统控制原理及控制方法。     

基于PROFIBUS现场总线的干熄焦控制系统研究

根据干熄焦生产工艺流程,干熄焦自动控制系统可分为灼热焦控制系统、干熄焦本体控制系统和循环气体控制系统。PROFIBUS现场总线和智能PLC现场设备的引入,实现了各系统的分布式控制和简单化安装。为满足控制要求,该系统采用三层网络架构,并具体论述了干熄焦控制系统的硬件整体设计和通讯设置,对干熄焦工业的现代化改造具有一定的借鉴意义。     

Relationship between cholecystolithiasis and polypoid gallbladder

Objective: To study the relationship between cholecystolithiasis and polypoid gallbladder(PLG), 260 patients with polypoid gallbladder were investigated. The patients were divided into 2 groups: group A (PLG combined with cholecystolithiasis) and group B (without cholecystolithiasis). The clinical pathological characteristics were analyzed. The intestinal epithelium metaplasia and atypical hyperplasia of the gallbladder mucosa were observed under light microscope. Results: Intestinal epithelium metaplasia and atypical hyperplasia of gallbladder mucosa were found in 47 of the 260 cases. The pathological lesions included 16 gallbladder carcinoma, 11 adenomatosis polyp, 5 myoadenoma, 7 cholesterol polyp, 4 inflammatory polyp and 4 adenomatosis hyperplasia, which occurred in 26 and 21 patients in group A and group B, i. e. 44.0% and 10.3% respectively. The difference between group A and group B was statistically significant (P<0.01). Conclusion: Cholecystolithiasis and the succeeding inflammatory reaction is a risk-factor for the polypoid gallbladder to develop tumour. Project (No. 2002ZXO19) supported by the Zhejiang Province Health Bureau, China     

Relationship between cholecystolithiasis and polypoid gallbladder

INTRODUCTIONThetermpolypoidgallbladder(PLG)isusedgenericallytodescribeanymucosalprojectionintothelumen .Itmaybeclassifiedaseithernon neoplasticlesions,whichcomprise 95 %ofallgallbladderpolyps,orneoplasticlesions,ofwhichadenomascomprisethevastmajority .Anu…