首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 685 毫秒
1.
第三代燃烧新技术-多孔介质燃烧技术研发及应用   总被引:1,自引:0,他引:1  
本文系统地介绍多孔介质燃烧新技术。首先对该技术的现状进行了总体介绍,接着对其概念进行了剖析,然后介绍了该技术在国内外的研究现状,最后介绍了该技术的应用现状,对宝钢实现的应用也进行了简单的介绍。  相似文献   

2.
本文介绍了油气润滑系统的背景及原理,介绍了邢钢线材厂的3中油气润滑系统及其优缺点,还介绍了邢钢线材厂在工作中总结的最佳油气供油方案。  相似文献   

3.
新型长寿命风口的研制   总被引:4,自引:0,他引:4  
本文介绍了高炉风口的使用情况及对提高风口寿命的研究,较详细地介绍了新型风口研制过程,并介绍了风口的修复方法。  相似文献   

4.
我国钒资源的生产及应用研究进展   总被引:28,自引:0,他引:28  
文章介绍了我国钒资源的储量、分布以及生产情况,尤其重点介绍了从我国的独特钒矿——石煤中提钒的工艺及其发展,并列举实例介绍了新工艺的应用;此外,还介绍了钒在我国的应用情况以及供需现状和趋势。  相似文献   

5.
本文介绍了广州广播电视台高清转播车参与2010年广州亚运会开幕式珠江巡游的方案介绍,从各部分系统详细介绍了整个方案的制作细节.  相似文献   

6.
楼纬 《甘肃冶金》2014,(1):95-97
介绍了济钢宽厚板厂50 MN压平机系统的工艺过程、设备组成,然后详细介绍了压平机自动控制系统的组成,最后介绍了50 MN压平机系统的应用情况和所创造的经济效益。  相似文献   

7.
配煤技术的发展   总被引:3,自引:0,他引:3  
系统介绍了近几十年来配煤技术的发展及其应用情况,也介绍了焦炭质量预测的几种方法,重点介绍了专家配煤系统,并探讨了当前配煤的研究方向。  相似文献   

8.
介绍了室内装修、装饰及室内环境污染的意义,分析了产生室内环境污染的原因,介绍了室内装修、装饰材料的选择方法及应注意的事项,简单介绍了控制及减少室内环境污染的做法.  相似文献   

9.
介绍了电解清洗技术基本原理和发展情况,对3种典型的高电流密度电清洗技术进行了详细介绍,并介绍了电解清洗机组在鞍钢、宝钢和宜昌薄板厂的应用情况。  相似文献   

10.
硫脲提金技术发展现状   总被引:4,自引:0,他引:4  
介绍了硫脲提金技术发展现状,主要介绍了硫脲提金原理、矿石预处理方法、从硫脲浸出液中回收金的方法,也介绍了提高硫脲提金效率的可行性方法及硫脲提金技术的发展趋势。  相似文献   

11.
This paper presents comprehensive and practical engineering review (not mathematics or computer science paper) of the observed behavior of the two types of slabs that have been used for the bottom floor slabs, at grade and underground, of buildings in the United States and overseas. The typical design of the slab-on-grade (SOG) built in the United States is described. The design requires only nominal reinforcing steel, but modern day design also requires ground preparation and improvement as necessary, including underslab perforated drainage pipe network embedded in the granular subbase, riser pipes, and a series of pumps. Sealing at all slab isolation joints and waterproofing membrane or water barrier system are provided for water tightness. The framed slab is supported directly on the building framing and on the building foundation. The design can accommodate the soil and underground water pressure and in itself is watertight as the slab is cast monolithically with the structural walls and footings. The behavior of the SOG depends so much on the behavior (soil properties) of the soil strata on which the slab is resting on. It is sensitive to the variation of the soil conditions at and around building foundations, leading to uneven bumpy and cracked slab and leaking basement. These were demonstrated in the report of short- and long-term performances of various projects in Thailand and United States in the past 25 years. The paper refers to various analysis and design techniques that may be used to improve the design of both the SOG and the framed slab for serviceability and economy. It is concluded that both types of slabs may be selected to suit the functions and serviceability requirements of the buildings. The SOG requires less concrete and reinforcement than those for the framed slab counterpart, but when all other factors are considered including additional underslab drainage and pump system, operating, and long-term performance and maintenance, the overall costs of both slabs may not be far apart, yet the performance and integrity of the framed slab will certainly be superior.  相似文献   

12.
Both hardiness and religiousness share spirituality, in the sense of searching for meaning in one's life, and have been shown to have a buffering effect on stresses that maintains and enhances performance, morale, and health. This study investigates how hardiness and religiousness compare in their relationship to depression, anger, and the coping and social support mechanisms whereby they may have these relationships. Participants were military and governmental personnel who completed accepted measures of hardiness, religiousness, and other variables on a volunteer basis. Correlational and multiple regression analyses showed that, by comparison with religiousness, hardiness has the larger and more comprehensive negative relationship with depression and anger, and positive relationship with coping and social support. The conceptual and empirical implications of these findings are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

13.
王福新  王莹 《天津冶金》2011,(2):31-34,61
介绍了天铁炼铁生产管理系统开发的情况,该系统采用ERP、MeS、PcS三层之间的数据集成,实现了炼铁生产物料跟踪,生产计划和配料管理及动态调整。提高了炼铁生产效率和铁水质量,降低了原、燃料消耗,达到炼铁生产管控一体化与生产过程优化。  相似文献   

14.
This paper deals with the problem of fault detection and isolation in irrigation canals. We have developed a method which combines static and dynamic data reconciliation for the validation of measurements, detection, and isolation of sensors and actuator faults and reconstruction of missing data. Static data reconciliation uses static models at a regulation gate to validate measurements and detect sensor and actuator faults. It also enabled us to detect a drift in the stage discharge rating curve. The dynamic data reconciliation uses additional measurements and a dynamic model of the canal in order to validate measurements and detect faults and withdrawals. The combination of the two methods allowed us to distinguish between withdrawals and faults. Both methods are evaluated on measurements from a real irrigation canal located in the South of France.  相似文献   

15.
The formation and geomorphic evolution of the Jiuduansha Shoal are investigated over the past 50 years in this paper. The sedimentary processes, formation, and geomorphic evolution of the Jiuduansha Shoal in the Yangtze River Estuary, eastern China, are analyzed based on digitized sea maps from 1945 to 2001, satellite images from 1975 to 2001, and field survey data in the spring-neap tidal cycle in the dry and flood seasons in 2003. The suspended sediment concentration and hydrodynamics of the North Passage and South Passage during the dry and flood seasons in the spring-neap tidal cycle in 2003 were investigated, and relations between the North Passage and South Passage of the Jiuduansha Shoal are analyzed. Results show that seasonal and spring-neap tidal cycle variations in sediment and water discharge from the drainage basin correspond to erosion and deposition on the Jiuduansha Shoal. The results and data can provide useful information for the management of the Yangtze River Estuary and restoration of the estuarine tidal flat ecology.  相似文献   

16.
段凤明 《天津冶金》2011,(2):28-31,61
天铁集团运输部由于调度作业是手工作业,效率低,差错率高,在企业扩大生产过程中遇到了调度组织的困难。根据自己的实际情况,利用计算机和信息化手段,设计了铁路运输调度指挥系统,实时动态掌握现场作业,改变作业及管理方式,显著提高了作业效率,满足了生产要求。  相似文献   

17.
蔡锋  刘曼  徐光 《钢铁》2022,57(6):143-149
 铁路运输和工程机械等领域对贝氏体钢的耐磨性和耐腐蚀性具有较高的要求,而表面渗硼、渗铬处理是常见的提高表面硬度和耐腐蚀性的有效方法。在已有的研究工作中,获得贝氏体基体的等温淬火热处理和表面改性处理是分开进行的,工序复杂且生产成本增加。提出制备表面高硬度、高耐腐蚀性中碳高强度贝氏体钢的新工艺,将表面改性处理和贝氏体等温淬火工艺一体化,既可以简化制备工艺,又降低了生产成本、减少了环境污染。采用渗硼/铬-等温淬火一体化新工艺制备表面高硬度、高耐腐蚀性中碳高强贝氏体钢,通过组织观察、硬度测试和腐蚀试验等,对比分析了渗硼-等温淬火和渗铬-等温淬火一体化工艺对中碳高强贝氏体钢组织和性能的影响。结果表明,与仅经过等温淬火工艺处理相比,渗硼/铬-等温淬火一体化工艺处理后,贝氏体钢表面均形成了维氏硬度超过1 500HV的渗层(约为贝氏体基体硬度的3.3倍),且在0.5%NaCl溶液中的腐蚀性能明显提高。暴露在0.5%NaCl溶液中3 h后,渗硼层表现出更好的耐腐蚀性能。两种一体化工艺均可制备表面渗层、基体以贝氏体相为主的新型高强贝氏体钢,在相同处理时间下,与渗铬-等温淬火一体化工艺相比,渗硼-等温淬火一体化工艺处理的渗层生长速率快,且渗硼层与贝氏体钢基体的结合强度更高。  相似文献   

18.
Transformative changes are on the horizon in aerospace engineering education and learning in general. These changes are attributable, in part, to the developments of a number of aerospace, learning and other leading-edge technologies and their synergistic combinations and convergence. The related technologies include ubiquitous, cloud, and petascale/exascale computing; ultrahigh-bandwidth networks; pervasive wireless communication; intelligent autonomous robotics; artificial general intelligence; powerful game engines and facilities; networked immersive virtual environments and virtual worlds; augmented and enhanced reality; and novel human-technology interfaces. This paper describes some of the frontiers of, and challenges in, future aerospace systems and the drivers for transformative changes in aerospace engineering education. The need to have a holistic perspective and a comprehensive approach for aerospace education, research, training, and accelerated workforce development is outlined. A starting point to accomplish this task is the development of an intelligent adaptive cyber-physical ecosystem for the aerospace workforce. The continuously expanding major components of the ecosystem include integrated knowledge discovery and exploitation facilities; novel agent-supported visual simulations (with cognitive learning and understanding abilities); immersive three-dimensional (3D) virtual world facilities; intelligent, multimodal and humanlike interfaces; and smart mobile wireless devices. The ecosystem will provide timely, engaging, personalized/collaborative, and tailored visual learning. It will stimulate creativity and innovation and prepare the learners to work in future global virtual collaborative enterprises and become leaders in a world of growing complexity.  相似文献   

19.
中国高炉炼铁技术装备发展成就与展望   总被引:1,自引:1,他引:0  
张福明 《钢铁》2019,54(11):1-8
 近40年来,我国钢铁工业取得了巨大进步,钢铁产量连续多年居世界第一。我国高炉炼铁技术装备在大型化、现代化、高效化、长寿化等方面发展成就显著。2000年以来,一批5000m3以上特大型高炉、500m2以上大型烧结机、7.63m超大容积焦炉和年产400万t/a以上大型球团生产线相继建成投产,一系列自主研发、集成创新的炼铁关键技术在生产实践中取得重大应用成效。在技术装备大型化的同时,高炉富氧喷煤、无料钟炉顶、煤气干法除尘、顶燃式热风炉及高风温、高效低耗烧结技术、大型清洁炼焦技术等先进技术及其装备研发与应用成效显著,有力推动了炼铁技术装备进步。到本世纪中叶,我国钢铁工业格局和流程结构将发生重大变革,减量化、绿色化、智能化、高效化将是未来一个时期炼铁技术装备的主要发展趋势。  相似文献   

20.
This study investigated relations between emotionality, emotion regulation, and children's behavioral adaptation in a longitudinal design. Mothers rated emotionality and emotion regulation related to anger, fear, and positive emotions-exuberance for 151 children at age 5 and later at age 6 years 6 months. Emotionality and emotion regulation measures were modestly related. Preschool ratings at age 6 (n=125), maternal ratings at age 6 years 6 months (n=133), and elementary school ratings at age 8 (n=135) of problems and competence were also collected. High anger emotionality and low regulation of positive emotions and exuberance predicted externalizing problem behavior and prosocial behavior. High fear emotionality and low fear regulation predicted internalizing problem behavior. There were few interactive effects of emotionality and regulation. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号