武钢高炉炉缸炉底技术管理

对武钢高炉炉缸、炉底技术管理的主要经验进行了总结。武钢通过抓好高炉炉缸炉底设计、高炉操作以及炉缸炉底日常维护管理，使高炉炉缸、炉底各部位热流强度均处在受控范围内，大大延长了高炉炉缸、炉底的使用寿命。     

湘钢1号高炉炉缸破损原因的调查分析

通过对炉缸、炉底侵蚀状况的调查以及炉缸、炉底实物组成的化学分析,阐述了炉缸、炉底侵蚀曲线形成的原因以及钛护炉的效果。     

大冶诺兰达炉炉结形成及处理的探讨

通过对诺兰达炉炉结的洗炉,停炉后的测量,结合取样分析、生产中的观察,讨论了炉结形成的原因、洗炉的效果,得出了今后诺兰达炉生产中控制炉结的生成以及洗炉时应该注意的问题。     

宣钢2#高炉炉墙结厚与炉缸堆积的处理

介绍了宣钢2#高炉炉墙结厚、炉缸堆积的过程,阐述了炉墙结厚、炉缸堆积的处理方式,包括配加锰矿萤石洗炉、空料线集中加焦热洗、堵风口等措施。分析了炉墙结厚、炉缸堆积的原因,总结了再回复炉况过程中存在的不足,提出预防高炉炉墙结厚、炉缸堆积的措施,为其他高炉预防或处理炉墙结厚、炉缸堆积提供借鉴。     

沙钢3号高炉炉缸炉底侵蚀结厚智能监测系统

高炉炉缸炉底耐材寿命是影响高炉一代炉役寿命的限制性环节,及时了解炉缸炉底的侵蚀情况并作出针对性调整措施至关重要。基于传热学、数值模拟、遗传算法等研究方法,结合炉缸炉底侵蚀、结厚的形成机理,利用炉缸炉底热电偶在线采集的温度数据,开发了沙钢3号高炉炉缸炉底侵蚀结厚智能监测系统。该系统还原了沙钢3号高炉整个炉缸炉底区域的温度场分布,实现了侵蚀结厚的动态模拟。此外,相比以往模型,本模型改进了人机交互方式,使炉缸炉底侵蚀结厚模拟结果以更加直观的图像与视频方式予以展示,从而使炼铁工作者更容易掌握炉缸炉底侵蚀现状及变化趋势。     

提高卡尔多炉单炉寿命的研究与应用

本文对卡尔多炉炉衬使用寿命短的原因进行了分析,从炉内衬材质、砖型、砌筑方式、操作等方面采取措施,将卡尔多炉单炉寿命从原来的75炉/炉次提高到100炉/炉次以上。     

长寿高炉炉缸和炉底温度场数学模型及数值模拟

高炉炉缸和炉底的寿命是影响高炉长寿的关键因素之一。实现高炉炉缸、炉底与高炉寿命同步的措施之一就是在高炉炉缸和炉底冻结一层渣铁壳。要想冻结渣铁壳,在高炉设计时应将1150℃等温线推离炉缸和炉底热面,这就需要计算高炉炉缸和炉底的温度场。为此讨论了目前应用于高炉炉缸和炉底温度场的一些数学模型,并在此基础上开发了通用的炉缸、炉底温度场计算软件。     

钨铼热电偶在高温炉中的应用

冶金工业生产与科研需要各种高温炉,如钨棒炉、真空炉、碳管炉、真空碳管炉、碳管热压炉、钼丝炉等。除钼丝炉最高烧结温度为1600℃左右外,     

武钢2号高炉炉缸炉底维护

随着冶炼的强化、炉顶压力的提高和低硅生铁冶炼,武钢2号高炉炉缸、炉底侵蚀加快,为此采取一系列维护炉缸、炉底的措施,同时妥善处理了高炉稳定顺行与维护炉缸、炉底之间的矛盾,既抑制了高炉炉缸、炉底的进一步加剧,同时高炉各项技术经济指标大幅度改善.     

提高铜冶炼回转式阳极炉炉寿的生产实践

本文介绍了大冶有色金属有限责任公司冶炼厂提高阳极炉炉寿的生产实践情况:结合大冶2#、3#阳极炉系统构成分析了影响阳极炉炉寿的主要因素;描述了大冶通过阳极炉耐火砖分区域选型和砌筑和优化烘炉升温曲线将2#阳极炉大修炉寿提高至2年以上、小修炉寿120-150天;通过优化稀氧燃烧烧嘴砖外观规格及砌筑工艺、开发稀氧燃烧火焰调节技术降低稀氧燃烧对炉寿的影响;优化透气砖操作和维护,确保透气砖安全运行16个月以上;结合实际优化设计阳极炉余热锅炉、炉盖系统的结构组成,减少其他系统对阳极炉炉寿的影响。     

Educators' perceptions of the D.A.R.E. program

This study examines the perceptions of educators about the Drug Abuse Resistance Education (D.A.R.E.) program, based on the results of a statewide survey among 286 fifth and sixth grade teachers and principals. Educators gave their highest ratings to teacher/officer interaction, the role playing exercises, and the graduation ceremony. Ratings of overall program quality and the impact of the program on students were both high. Block regression analysis was used to examine factors predictive of educators' views of D.A.R.E. D.A.R.E. program elements were the most important factors explaining variance in educators' ratings of over-all program quality and program impact on students. Altogether, 54 percent and 38 percent of the variance in both dependent variables were explained. The results are discussed in terms of the important role teachers and principals play as stakeholders in prevention education.     

Racemose angiomatosis. Comments on the article of D.E. Matsko and I.A.Sokolova. Racemose angioma of the nervous system: tumor or developmental defect? Vopr. onkol. 1966. V.42, No.6. p.91-96

Diversion colitis is thought to result from nutritional deficiencies secondary to fecal diversion. Symptoms include hemorrhagic purulent rectal discharge, abdominal pain, and tenesmus. 5-Aminosalicylic acid (5-ASA) and N-butyrate enemas have been reported to help this condition non-spinal cord injury (SCI) patients. We report the case of a 49-year-old C6 ASIA B tetraplegic man who had received colostomy because of intractable ileus 10 years earlier. He presented with a 2-week history of rectal pain and bleeding. Abdominal and rectal examination on admission were unremarkable. Colonoscopy showed a partial stricture 70cm proximally to the rectum. The colonic mucosa appeared granular and friable with evidence of linear ulceration. Histopathologic study was consistent with colitis. The patient developed fever, abdominal distention, and extensive retroperitoneal air after endoscopy, suggesting colonic perforation. He was treated with daily 5-ASA suppository and total parenteral nutrition for the presumed diagnosis of diversion colitis, and intravenous antibiotics for perforated colon. After 6 weeks of treatment with 5-ASA, the patient had decreased rectal pain and bleeding. This experience suggests that diversion colitis may be a cause of abdominal discomfort in SCI patients and that 5-ASA may be used in the management of diversion colitis.     

Some fundamentals of B. F. Skinner's behaviorism.

Despite B. F. Skinner's prominence, his impressive written corpus, and the many authoritative presentations by others of his approach to psychology, the fundamentals of Skinner's psychology have never been addressed in any comprehensive manner. In this article, the authors take steps to fill this gap by synopsizing Skinner's written corpus into 12 fundamental points that seem to characterize his behaviorism. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Structural bonding contributions and the elastic response of b.c.c. and f.c.c. crystals

The anisotropic elastic response of body centered cubic (b.c.c.) and face centered cubic (f.c.c.) crystals is reviewed within the framework of general elasticity and particular model dependent relations. It is found that important trends in the observed behavior of specific groups of crystals can be reproduced by models that include only structural contributions to crystal binding. In fact, a very simple model, consisting of only nearest and next nearest neighbor interactions, reproduces the salient behavior, including the algebraic signs of Poisson's ratio and the orderings of the shear moduli, Young's moduli, and Poisson's ratios associated with major crystallographic symmetries. The analysis provides insight into the differences between the b.c.c. transition metals and the b.c.c. alkali metals.     

Study of the h.c.p.-f.c.c. phase transition in cobalt by acoustic measurements

Acoustic measurements have been performed in the vicinity of the h.c.p.-f.c.c. phase transition in cobalt. The main results are the following: At low frequency (~ 1 Hz), a high transitory internal friction peak is observed. It is shown that this internal friction is a function of T/vT temperature rate, v vibration frequency) but is not proportional to T/v. This behavior is explained in the framework of a recent model based on a Clausius-Clapeyron-like equation expressing the coupling between stress and phase transition; At medium (~5 KHz) and high (~ 20 MHz) frequencies, the transitory internal friction becomes negligible. However, a small peak appears accompanied by an elastic modulus decrease. It is shown that these anomalies are related to the shear modes parallel to the transformation plane. Thus, they might be related to the motion of the partial dislocations composing the h.c.p.-f.c.c. interface.     

E. G. B.: The early years and change of course.

Discusses why E. G. Boring left the laboratory to become the foremost historian of experimental psychology. The position of psychology in general and at Harvard in particular in the mid-1920s is examined, and it is concluded that Boring turned to history because he could not accept the current phenomenological or behavioristic approaches. The Zeitgeist had rendered Titchenerian structuralism obsolete so it was natural for Boring to devote himself to the history of the great sensory tradition. His inclusion of James and Freud among the "very great" psychologists showed his growth in appreciation of men outside the structuralist school. Boring's career exemplified the positive and negative interactions of eponyms with the Zeitgeist which he maintained was an essential factor in the progress of science. (19 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

H. M. revisits the Tower of Hanoi Puzzle.

To address the controversy of whether an intact procedural memory system alone can support the teaming of the recursive strategy for solving the Tower of Hanoi Puzzle, the authors tested 2 amnesic patients, H.M. and P.N. Contrary to the report of N. J. Cohen, H. Eichenbaum, B. S. Deacedo, and S. Corkin (1985), both patients failed to master the recursive strategy under the active-interaction condition. In contrast, normal control participants were able to master the strategy under identical testing conditions. The failure of H.M. and P.N. could not be attributed to the differences between the original and current testing conditions. In addition, neither patient showed frontal lobe dysfunction or impairment in procedural memory. Together with evidence provided by theoretical analyses of this puzzle as well as studies on normal participants, the authors conclude that declarative memory plays a vital role in the acquisition of the recursive strategy for solving the Tower of Hanoi Puzzle. (PsycINFO Database Record (c) 2010 APA, all rights reserved)