太钢3号高炉提高煤比的实践

对太钢3号高炉提高煤比的难点进行了分析,总结了提高煤比的生产操作措施,并提出了保持长期高煤比仍需要解决的技术和操作问题.     

太钢4号高炉提高煤比的措施

太钢4号高炉自2003年12月至2004年6月，为提高煤比至140kg／tFe，采取了一系列技术措施．主要是优化高炉操作，保持充足的炉缸温度，加强喷煤操作，保持合理的煤气流分布等，提高煤比后取得了良好的经济技术指标。     

太钢4 350 m3高炉实现高煤比运行的建议

通过分析大型高炉高煤比运行存在的问题及中国宝钢、韩国浦项等大型高炉高煤比运行的经验,结合太钢的实际情况,对太钢4 350 m3高炉实现高煤比运行提出几点建议.     

太钢高炉最佳喷煤比的研究

根据太钢４号高炉的送风参数、风口理论燃烧温度及氧过剩系数的约束条件,计算了高炉的合理煤比;另外,根据喷煤操作实际数据进行回归分析计算,确定了煤焦置换比与喷煤比、理论燃烧温度、氧过剩系数的关系,在此基础上得出了高炉的经济喷煤比,两种计算结果接近,从而得出太钢高炉目前条件下的最佳喷煤比为１０８ｋｇ／ｔ。并对进一步提高喷煤比提出了改进措施。     

太钢5号高炉稳定运行的生产实践

太钢5号高炉投产以来,在稳定高炉操作方面作了很多努力。通过总结大型高炉生产操作和管理的实践经验,细化原燃料质量管理,实施4.50%以上高富氧率和190~200kg/t高煤比操作,同时,采用硬质压入修复炉型和稳定使用小粒度烧结矿相配合来规整炉内煤气流,实现了煤比长期190kg/t以上和炉缸截面积利用系数达到67.1~69.2t/(m2·d)的长期稳定生产。     

太钢4350m3高炉提高煤比的生产实践

太钢4 350 m<'3>高炉为了降低生产成本,提高大型高炉的综合经济效益,通过加强原燃料质量管理,在高富氧率大喷煤量操作下实现合理的煤气流分布和稳定的操作炉型,使煤比得到逐步提高,2007年5月后煤比一直在180kg/t以上运行,2008年有8个月煤比在200kg/t以上.     

太钢二高炉生产工艺技术的进步

太钢2号高炉自1999年5月采取高炉槽下过筛,提高风温,富氧喷吹及加强高炉操作等措施,高炉技术经济指标大幅度提高,利用系数连续4个月达到2．8以上,入炉焦化降至404kg／t,煤比达130kg/t跻身于全国同类型高炉前列。     

太钢3号高炉低燃料比冶炼实践

对太钢3号高炉低燃料比冶炼操作实践进行了总结。通过加强原、燃料管理,优化高炉操作参数,优化炉前出铁,使高炉长期稳定顺行,实现了高炉低燃料比冶炼。     

太钢5号高炉操作炉型的管理实践

高炉-代炉役期存在由设计炉型向操作炉型的转变过程,太钢5号高炉操作人员针对5号高炉的设计、运行特点,总结出符合其炉型演变、维护要求的管理制度,其中包括原燃料管理、布料矩阵调整、冷却制度调整、炉体温度分析与控制以及硬质耐火料压入维护炉衬的方法。运用这些管理方法,5号高炉能够长期保持合理操作内型,取得了利用系数2．5t／（m^-3·d^-1）,煤比180kg／t以上的先进生产指标。     

太钢4350m^3高炉实现高煤比运行的建议

通过分析大型高炉高煤比运行存在的问题及中国宝钢、韩国浦项等大型高炉高煤比运行的经验，结合太钢的实际情况，对太钢4350m^3高炉实现高煤比运行提出几点建议。     

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)     

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.     

小方坯连铸机的切割设备

现在采用的小方坯连铸机的切割设备，分为机械剪和火焰切割机，机械剪包括电动机械剪和液压剪，而液压剪又有平剪刃和４５°剪刃之分，火焰切割机则分为有动力传动和无动力传动的火焰切割机，对这些切割设备的结构特点和优缺点均进行了分析介绍。     

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.