进口炼焦煤煤质的分析与评判

对印尼、蒙古、美国等国炼焦煤质量的工业指标、工艺指标、煤岩指标、单种煤焦炭显微结构进行研究,提出采购部门在引进新增炼焦煤资源时,不能仅依据国内常用工业指标和煤岩指标,还得根据流变性、膨胀性及其单种煤成焦显微结构等多方面来判定煤质,从而确定合理的性价比。     

八钢2500m~3高炉冶金焦应用性能的研究

以八钢现有炼焦生产及高炉生产技术参数为依据,研究八钢焦炭性能,重点研究疆内煤资源炼制的焦炭相关性能,探究了相关单种炼焦煤和焦炭的微观结构性能等,为八钢炼焦煤资源利用提供新思路,为八钢大高炉生产用焦炭提供技术支撑。     

酒钢煤,焦炭微观性能研究与应用

本叙述了酒钢炼焦煤在煤质普查的基础上，进行了煤，焦炭的微观性能研究，以及焦炭的抗碱性能试验，为公司采购和生产配煤提供了科学的依据。     

优化配煤提高焦炭质量

针对攀钢公司炼焦煤煤质逐年瘦化的趋势，为了满足炼铁在高炉喷煤条件下对焦炭质量要求，在２００ｋｇ焦炉上进行了一系列试验，提出了适当增加肥气煤，合理利用郊区煤以及配煤细度控制等一系列改善焦炭质量的措施。     

鞍钢炼焦工艺及用煤技术发展趋势

介绍了鞍钢炼焦工序近10年的技术改造、配煤结构调整和焦炭质量变化情况,指出了配煤结构与国内炼焦煤资源不适应的问题,提出在优质炼焦煤短缺、来煤质量下降的情况下,鞍钢应进一步强化对来煤质量的监督管理,并采取煤调湿、捣固炼焦等新工艺,实现进一步提高焦炭质量、适应资源、可持续发展的目标。     

东南亚高挥发分气煤的研究与应用

对进口东南亚高挥发分气煤的煤质及使用过程中表现出来的特点进行了分析讨论,认为合理使用该煤种可有效降低焦炭灰分,为扩展炼焦煤资源进行了有益的探索与实践。     

澳大利亚进口炼焦煤煤质及生产应用的研究

通过煤质的工业分析、岩相分析、20 kg小焦炉试验和工业实验,对澳大利亚进口炼焦煤峰景北和博池进行研究和试验。通过研究和试验表明,两种煤均为灰分、硫分偏低且质量稳定的炼焦煤,配煤炼焦中有利于提高焦炭质量,满足高炉的开炉和生产需求。     

提高焦炭质量的研究

介绍了焦炭质量变化对高炉操作的影响以及大高炉生产对焦炭质量的要求。通过完善煤质管理、改善焦炉炉温均匀性、重视焦炭的热性质、优化配煤结构、改善焦炭强度等途径,提高焦炭质量。提出在炼焦煤资源紧张的情况下,采取选择粉碎、煤干燥、煤水分控制、煤干燥风选压块、干法熄焦等配煤炼焦新技术,可以提高涟钢焦炭质量,满足大高炉生产需要。     

我国炼焦煤与无烟煤的资源和生产能力

我国煤炭资源分布的特点是地域分布和煤种分布都不均匀.炼焦煤和无烟煤的煤质特征与其成煤时代有关.炼焦煤和无烟煤的生产能力很大,能满足焦炭生产和高炉喷吹的需要.炼焦煤的洗选能力也很大,但因煤炭资源分布的特点及优质炼焦煤资源不断减少,在焦炭产量飞速增加的今天出现优质炼焦精煤供不应求的现象.     

稳定焦炭强度的措施

在论证稳定焦炭强度的重要性和分析影响焦炭强度因素的基础上 ,提出强化煤场煤质管理、制定新的炼焦煤质量标准、建立精煤主副供点制度、稳定主焦煤优质煤源基地等措施 ,使实施后的焦炭M40 %提高了 1 .2 % ,M10 %极差降低了 0 .3% .     

Benzimidazole resistance in cyathostomes in horses in the Ukraine

The efficacy of treatment with cambendazole was tested in 1-year-old horses on a farm in Dubrovka, Ukraine. Thirty-five horses were treated. Their egg output was compared on the day of treatment and 14 days later with that of 33 untreated horses. Before treatment the mean number of eggs g-1 faeces was 614 in the controls and 766 in horses that had been treated. After 14 days the mean egg output in the controls was 580 and in the treated horses 369. This means a reduction of 54.5%. Only cyathostome larvae could be cultured from faeces collected after treatment. It can be concluded that benzimidazole resistance in cyathostomes is present in the Ukraine.     

重庆高校推进产学研合作的案例分析

以重庆大学、重庆邮电大学和重庆理工大学为例,剖析重庆高校推进产学研合作的基本模式,已经取得的突出成绩,分析总结其基本经验.从完善政策法规体系、强化经济调控、建立组织机构、加强中介建设及开展国际产学研合作等方面,提出了深入推进重庆高校产学研合作的对策建议.     

Fractures in childhood in Khartoum

A prospective study of fractures in 231 children received at Khartoum North Teaching Hospital(KNTH) was carried out for a period of six months. The incidence of child fracture rated as one per day, then it increased from the age of 5 years onwards in boys and between 6 and 8 years in girls. Most injuries were sustained during the day time, especially between late afternoon and sunset. 82% of injured children presented to a medical facility, while 18% were taken to native healers first. Non-road traffic accidents accounted for 84% of the fractures mainly due to sports, domestic injuries and falls; whereas road traffic accidents were 16% and occurred mainly in pedestrians. Forty three percent of the fractures needed only first aid and splintage while 42% needed closed reduction. Thirty one percent of all patients were treated as inpatients. The long bones were affected in 91% of all fractures, the commonest site being the distal end of the forearm (26%), followed by supracondylar fracture of the humerus (15.6%). In the upper limb, left-sided fractures predominated. The epiphyseal injuries were 3.5% of all fractures, mainly at the distal radial epiphysis. Boys were commonly affected between 13-15 years of age. Open fractures constituted 9.8% of the series and were mainly due to traffic accidents in town dwellers, the most vulnerable bones were those of the leg and foot. Pathological fractures accounted for 2.2% and were due to bone cysts and osteogenesis imperfecta. The problem of child safety and the preventive measures need to be more stressed.     

Apoptosis in experimental myocardial infarction in situ and in the perfused heart in vitro

We report the appearance of apoptotic cells in experimental myocardial infarction (rabbit heart) in in situ and in vitro preparations. Apoptosis was recognized by intravital staining with Hoechst 33342 (Ho342), by nick-end labeling (TUNEL) and by DNA laddering. A steady rise in the relative number of apoptotic cardiomyocytes (apoptotic index) was noted in in situ preparations. Apoptosis was first noted 6 h after the onset of ischemia with its highest value occurring after 72 h. Apoptotic nuclei were absent in remote areas of the left and right ventricles. Apoptotic nuclei within the infarcted area showed diminished intensity of Ho342 fluorescence. Three days after ischemia, a border zone adjacent to the infarcted area consisting of apoptotic macrophages was recognized. A novel finding was the appearance of apoptotic cardiomyocytes in the isolated perfused ischemic heart. Occurring as early as 50 min after the onset of ischemia, a high apoptotic index was present adjacent to the ligature placed around the coronary artery. This observation provides the opportunity to selectively examine factors leading to apoptosis in the ischemic heart under controlled experimental conditions.     

Problems in falling in love

Certain patients enter psychoanalysis because of their inability to love another person. Often they report a repetitive erotic pursuit of desired partners, without being able to experience or maintain loving feelings. Kernberg has understood such difficulties as representing effects of early narcissistic disappointments and/or of difficulties in resolving oedipal conflicts. In this paper, Lacanian concepts of the mirror phase and symbolic love are employed to develop these issues. Sexualization of problems in mirroring may be fused with oedipal conflicts in some cases. An extended vignette is presented to illustrate the technical and theoretical issues.