应用PDA-7000光电直读光谱仪分析生铁中的硫

讨论了应用PDA-7000光谱仪分析炼钢生铁中硫含量的分析条件和影响结果准确性的因素,确定了最佳分析条件。通过与碳硫仪分析数据的比对,确认PDA-7000光电直读光谱仪分析结果准确,满足了炼钢厂入炉铁水快速准确分析的要求。     

高锰铁矿石分析方法研究

对X荧光光谱熔融法（钴内标）分析含锰高类的铁矿石进行了研究、探讨,对导致TFe仪器分析结果偏高的原因进行了分析,解决了该方法分析此类铁矿石存在的不足,提高了荧光分析的准确度。     

数据仓库技术在黄金矿山成本分析中的应用

数据仓库技术的产生和发展为黄金矿山的经济活动分析提供了新的思路。中简要介绍了黄金矿山成本分析的主要内容,建立了成本分析的逻辑模型,通过数据的抽取、转换、存储等过程建立了成本分析多维数据集,并给出了某黄金矿山作业成本分析的结果。     

荧光光谱法在分析冶金石灰中的应用

介绍了荧光光谱法分析冶金石灰工作曲线的制作,试验了试样粒度、压片压力、压片的保压时间对分析结果的影响,得出了最佳的分析条件。用该方法分析结果准确、快速,分析成本低,满足了降成本、快速生产的需要。     

环境空气中SO2监测存在问题与改进

针对环境空气中SO2监测分析过程中出现的问题进行了分析,对影响分析结果的关键步骤提出了相应的改进措施,提高了监测效率,保证了监测分析结果的准确可靠.     

应用ONH836联测镍钛合金粉中氧、氮元素气体含量

应用ONH836分析镍钛合金粉末中氧氮含量,为提高测定镍钛合金粉的气体分析结果准确性,本文针对镍钛合金粉中气体元素分析方法进行了较详细的优化和论证。首先介绍了镍钛合金粉末在行业中自身特点,而后又建立了惰气熔融-红外吸收法联合测定镍钛合金粉中的氧、氮含量,并确定了该方法的称样量、分析功率、分析时间等气体分析中关键的分析参数,通过对比实验详尽阐述了分析镍钛高温合金粉末的技术要点,并详细介绍了应用ONH836分析镍钛合金粉的分析步骤,最后经对比实验验证,该方法所取得的测定结果准确、可靠。     

改进煤气含苯分析的校正系数

随着焦炉煤种及配比的改变,煤气含苯分析的谱图发生了变化。为了能更好地指导生产,我们从实际出发,改进了煤气含苯分析校正系数,减小了煤气含苯分析误差,大大提高了分析准确度。     

硫化矿表面污染及预防方法探讨

分析了常见金属离子对硫化矿表面的污染及预防方法,通过实例分析比较了几种预防方案的效果,重点分析了硫化钠的作用．     

中国炼铁专利申请情况及分析

本文利用现代网络技术和专利调研分析软件,对中国钢铁行业炼铁技术领域的专利申请进行了全面调研分析。分析了中国炼铁专利申请现状、发展趋势、技术热点,分析了国外来华申请情况并与中国申请情况作了比较,并提出了应予重视的几个问题。     

熔融法测定钢中的氢含量

对影响熔融法测定钢中氢含量的问题进行了分析,对仪器的分析参数进行了选择和优化,确定了最合适的分析条件,在该条件下分析样品具有良好的精密度和准确度.     

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.