移动床离子交换装置

目前,在工业应用方面,采用粒状离子交换树脂的固定床以及移动床离子交换树脂装置占有显著地位,固定床离子交换装置,是将所需处理的液体通过离子交换树脂层进行离子交换。当树脂达到饱和状态时,需将树脂进行再生,不断重复上述操作,属于一种间断操作装     

离子交换除盐水处理器的失效控制

介绍以一级复床除盐系统为基础的常用固定床离子交换除盐水处理器的失效检测和控制方法，并提出改进措施。     

CR103型浮动床软水器在鞍钢的应用

鞍钢使用的软水器种类繁多,产家也多,经过比较,我们认为鞍山软水设备厂生产的 CR103型浮动床软水器比较好,有许多优点。CR103型浮动床软水器出水质量好,运行稳定,出水质量一般为0.01～0.03毫克当量/升左右。经多次化验,表明出水质量一直正常。修建公司电气队一台0.9吨/小时快装锅炉安装了 CR103型浮动床软水器,四年来,经多次检查和现场化     

不同的钒渣提钒浸出方式的工艺条件及发展方向

讨论了钒渣提钒过程中分别适应于流化床和固定床两种浸出方式的不同工艺条件，并指出半汉化床与固定床相结合的工艺是浸出工艺的发展方向。     

云铜软水生产工艺改造实践

介绍采用钠型三塔式流动床软水生产工艺替代氢-钠并联固定床逆流再生系统软水生产工艺的改造实践。     

云铜软水生产工艺改造实践

介绍采用钠型三塔式流动床软水生产工艺替代氢-钠并联固定床逆流再生系统软水生产工艺的改造实践。     

离子交换除盐水处理器失效的控制

阐述了以一级复床除盐系统为基础的固定床离子交换除盐水处理器的失效检测和控制方法,并提出了改进措施.     

用活性氧化铝去除饮水中氟的工程化试验研究

研究了用活性氧化铝从饮水中除氟,并将其与密实移动床吸附装置相结合。结果表明:用活性氧化铝-密实移动床从饮水中除氟处理水量大,可连续运行,产水中氟质量浓度适宜(0.5～1.0mg/L);设备尺寸较小,吸附剂氟容量较高;载氟活性氧化铝可用少量NaOH溶液处理后再用水淋洗;对高浓度氟、铝淋洗液,可采用石灰乳沉淀—硫酸调整pH工艺处理,保证除氟工程的环保要求。另外,还提供了按处理量设计的固定床装置或密实移动床吸附塔及其配套再生塔设计图。     

连铸坯自适应矫直的试验研究

简述了连铸坯自适应矫直的原理，在自制的模拟试验装置上实测了自适应矫直装置浮动辊的浮动量和矫直反力，实测结果和理论分析和吻合。与其它矫直方法相比，自适应矫直装置具有容易安装、调试、保证铸坯内部质量的优点 。     

折流移动床用于除尘的研究

在折流移动床的气固流动特性的研究基础上,以小米为除尘介质,对折流移动床在除尘中的应用进行了研究.并分析了各种操作条件对过滤效果的影响.结果表明,折流移动床用于烟道气除尘效果很好,产物均匀且易于调控,可以实现连续操作,同时多层床的实现,提高了除尘效率,并且此新型装置的压损显著低于固定床,降低了动力消耗.理论分析建立的数学模型计算结果与试验结果基本相符.     

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.