V型滤池滤板密封处理工艺

V型滤池滤板密封处理工艺,是V型滤池施工的关键技术。通过介绍滤板渗漏处理过程,密封施工技术措施,为V型滤池滤板密封、渗漏检修提供借鉴和参考。     

净水厂两种典型滤池设计应用解析

V型滤池和翻板型滤池是目前水厂净水工艺中两种技术较为先进的滤池,通过对这两种滤池的工艺过程、工艺特点、主要设计参数、自动化控制等方面进行比较分析了两种滤池各自的优缺点及适用范围。     

V型滤池在净化水工艺中的应用

主要介绍V型滤池的工作原理、结构性能、施工注意事项、调试运行效果及存在问题,对存在的问题进行分析和总结。     

动力公司水厂监控调度系统

本文介绍了动力公司水厂监控调度系统 ,详细论述了系统通讯问题的解决方案和V型滤池的自动控制方案。     

V型滤池自控系统设备故障分析及处理措施

介绍了马钢V型滤池自控系统设备组成,分析了滤后出水阀、反冲洗进水阀、进气阀、排水阀等设备易发生的故障,并采取有效的处理措施。     

V型滤池结构细部设计及施工

在废水深度处理工程中V型滤池对结构的设计及施工都有严格的要求，该文对其中几处细部的设计和施工进行了说明。     

CISDI废水零排放技术

正该项技术包括废水零排放计算软件、赛迪高效澄清池、赛迪高速滤池、移动床生物膜反应器(MBBR)、MED多效蒸发结晶等10余项国内领先的工业废水综合利用技术和产品,形成了"高效沉淀+MBBR+过滤+双膜法"、"高效沉淀+V型滤池+双膜法+MED多效蒸发结晶"两条典型的工业废水综合利用方案,真正实现了废水"零排放"。     

新冶钢厂区综合污水处理与利用

通过对冶金行业污水处理系统进行考察,在新建设的污水处理中应用"高密度澄清池+V型滤池+双膜法"水处理技术和工艺,并将园林景观融合在污水处理建设工艺中,丰富了污水处理建设的内涵     

PLC在不锈钢分公司污水处理站自动控制系统中的应用

主要论述了PLC在不锈钢分公司污水处理站自动控制系统中应用的设计方案.该系统主要完成对不锈钢分公司污水处理站的原水泵、调节池、高密池、生物滤池、污泥处理和改造项目增加的V型滤池设备的自动控制和状态监视任务.整个系统采用集散控制结构.主要由S7-300 PLC及其扩展模块、智能控制器、智能仪表等组成.软件功能由组态软件WinCC,Phrotool和可编程软件Step7实现.该系统能够较理想地对污水处理站设备进行自动控制,满足了污水站自动化系统的基本要求.     

某钢厂自备工业水厂设计

自备工业水厂总设计规模3.8×104m3/d,分两期建设,一期规模1.9×104m3/d。净水工艺流程采用折板絮凝池—斜管沉淀池—V型滤池的常规处理工艺。简要介绍了工程主要建、构筑物工艺设计参数、设备配置情况等,并对工艺设计特点及水厂的运行情况进行总结。     

转炉炉壳热应力分析

根据实际转炉建立实体模型。以有限元为手段,考虑了炉衬和炉壳材料的物性参数随温度变化的特点和炉衬与炉壳之间膨胀间隙,计算了转炉炉壳在温度载荷和炉衬膨胀压力同时作用下的热应力。所得结果可为转炉炉壳设计提供依据。     

焦炭热性能指标意义浅析

通过对焦炭在高炉内的历程及其变化规律的剖析,阐述焦炭热性能指标的意义,形象地把焦炭在高炉内的损耗分为三部分(M1,M2,M3)。指出M2对焦比及焦炭价格有一定的指导作用。     

Results of treatment of cancer of the cardia

Cancer of the cardia is traditionally discussed with cardiac cancer of the lower portion of the esophagus and upper gastric cancer invading the esophagus, and the specific characteristics of cancer of the cardia have never been clearly defined. We reviewed the outcome of 172 patients with adenocarcinoma of the cardia who had undergone radical surgery between 1949 and 1994 in the Division of Gastrointestinal Surgery of the Cancer Institute Hospital. The centers of the tumors were located within 2 cm above and below the boundary between the esophagus and the stomach, and their longitudinal diameter was less than 8 cm. We divided the patients into an early period (1949-1979; n = 79) and a late period (1980-1994; n = 93), and focused on the historical transition. There were no differences in patient gender or histology between the two periods. However, the late period was associated with fewer cases of esophageal invasion and shorter longitudinal diameter, as the age of the population advanced. The number of advanced cancers such as the localized and infiltrative type had decreased, and early cancer and early clinical stage had become more common, but despite the fact that the number of early cancers had increased, extended dissection, such as thoracic and paraaortic lymph node dissection, was performed more frequently. By clinical stage, the long-term outcome markedly improved in Stage I patient in the late period, and tended to improve in Stage II and III patients. This appears to have been attributable to the prevention of micrometastasis by extended dissection, although the number of early cancers is another major potential cause. There were no differences in the outcome of Stage IV patients between the two periods, and further advances in multimodality therapy must be awaited. The range of resection is basically proximal gastrectomy, and if there are adequate indications, the prognosis is favorable. In view of the status of lymphatic flow and lymph node metastasis, and long-term results, lateroaortic lymph node dissection is important. Since the number of early cancer patients has been increasing, if intraabdominal recurrence is prevented, intrathoracic lymph node dissection will contribute greatly to the outcome of such patients.     

The effect of amount of possession of the trait of hostility on accuracy of perception of hostility in others.

Some theories of personality hold that an individual's perception of others is influenced by his own personality characteristics; more specifically, that a trait of low social value will be projected more into others, and that insight into the possession of these characteristics reduces this distortion. These 2 hypotheses were tested by having a group of college students rate each other (including themselves) on degree of friendliness or hostility. Agreement with group rating about self yielded the insight score. In general, the hypotheses were supported; the "friendly" Ss were most accurate in their perception of others, and insight was positively associated with accurate perception. From Psyc Abstracts 36:04:4HL16M. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Comparison of rates of infection of two methods of emergency ventricular drainage

The rates of infection of two methods of external ventricular drainage in use at Atkinson Morley's Hospital--namely, (a) percutaneous drainage with Rickham reservoirs and (b) tunnelled ventriculostomies--were compared in this retrospective review. Percutaneous drainage of CSF with Rickham reservoirs was associated with a 27% rate of infection as identified by positive microbiological cultures; tunnelled ventriculostomy catheters had a 10% infection rate. The difference in the infection rate between the two methods was statistically significant (P < 0.015). Other variables examined, including the age and sex of the patients and the reasons for ventricular drainage, were not associated with an increased rate of infection. Most infections from either method were caused by a coagulase negative staphylococcus. The average duration of ventricular drainage before identification of positive cultures was 5.7 days for Rickham reservoirs and 6.0 days for ventriculostomies.     

浅析《野草》的版画特征

鲁迅先生一生热爱美术作品,对版画中木刻兴趣尤甚.<野草>作为其"写心之作",亦呈现出一些与木刻版画一致的审美特征:一是具有木刻版画的色彩特征,多对比、多冷色,有阴郁的美感;二是具有木刻版画的力度特征,环境描写、人物刻画处处刀锋毕现,遒劲有力,有一种"力之美".     

四辊破碎机车刀架的改造

针对四辊破碎机车刀架车削中存在的几个问题,详细介绍了电动车刀架的结构和工作原理,建立主要设计参数的数学表达式,并进行适当的分析。改造后,这种电动车刀架运行平稳、可靠、方便、省力,取得了预期的效果。     

Effect of antibiotics of chemotaxis of human leukocytes

The effect of 20 different antibiotics on chemotaxis by human neutrophils was studied. Human leukocytes incubated with chloramphenicol, rifampin, sodium fusidate, and tetracyclines in vitro showed markedly depressed migration. The mechanisms by which these antibiotics affect leukotaxis are discussed.