连轧管机组发展历程及生产技术

近40年连轧管机组得到大力发展,设备年生产能力已达2000万t。介绍了连轧管机组的应用范围及特点、发展历程及生产技术的发展情况;主要介绍了锥形辊穿孔机、三辊连轧管机、张力减径机在质量控制技术等方面的新工艺,探讨了连轧管机组进一步发展的方向。     

The Development Of Ozone For Potable Water Treatment Within The United Kingdom

The historical development of the application of ozone to potable water treatment within the United Kingdom is reviewed up to 1990. The impact of privatization of the water utilities on the use of ozone is discussed and the process applications currently being considered are described. The paper concludes with a survey of water treatment plants which are using ozone in 1993, and those planned for completion by the year 2000.     

Comparison between the new mechanistic and the chaos scale-up methods for gas-solid fluidized beds

The chaotic scale-up approach by matching the Kolmogorov entropy(E_K) proposed by Schouten et al.(1996) was assessed in two geometrically similar gas–solid fluidized bed columns of 0.14 and 0.44 m diameter.We used four conditions of our validated new mechanistic scale-up method based on matching the radial profiles of gas holdup where the local dimensionless hydrodynamic parameters were similar as measured by advanced measurement techniques.These experimental conditions were used to evaluate the validity of the chaotic scale-up method,which were selected based on our new mechanistic scale-up methodology.Pressure gauge transducer measurements at the wall and inside the bed at various local radial locations and at three axial heights were used to estimate KE.It was found that the experimental conditions with similar or close radial profiles of the Kolmogorov entropy and with similar or close radial profiles of the gas holdup achieve the similarity in local dimensionless hydrodynamic parameters,and vice versa.     

Surfacing methods for increasing the service life of rapidly wearing working tools of agricultural machines

The rapid wear of working tools of agricultural machines and equipment lowers the productivity of labour and the quality of operations. The most important and, correspondingly, most ‘problematic’ loaded components of agricultural machines are soil cultivating working tools. The principal methods of increasing the service life of these components are to use new materials and hardening surfacing technologies.     

对潭口新区工程方案编制与实践的认识

潭口新区建设方案编制以节能降耗为出发点,机采系统依靠井底流压和目标产量确定工作参数,杆柱组合采用能耗最低设计方法,根据斜井抽油杆侧向力分布状况设计抽油杆扶正器设置间距;注水系统优化地面管网布局,降低了高压注水单耗;集输系统对单井集油管线进行了优化设计,充分利用油井伴生气资源,实现了单管常温集输和单管油气密闭集输,减少了原油损耗,降低了区块的能耗水平。     

企业社会责任激励制度研究——基于新制度经济学企业理论

企业在承担社会责任时由于存在"搭便车"问题,缺乏主动承担社会责任的动力,运用新制度经济学企业理论分析了其原因。而且,为了解决这一问题,设计了一种制度以激励企业能够积极主动地承担起社会责任,同时证明了在确定性环境和不确定性环境下这种制度的纳什均衡都可以实现帕累托最优。     

新能源科学与工程专业人才培养再探

新能源科学与工程专业作为国家确定的战略性新兴产业相关本科专业建立之后,与之配套的培养方案、课程安排等处于起步探索阶段.对我国部分院校现行的新能源科学与工程专业人才培养方案进行了对比分析,在此基础上对沈阳工程学院结合实际修订的2013级培养方案培养目标、专业课程的基本设置进行了较为细致的解读.     

规划失地农民就业转型机制的研究

明确规划失地农民概念,分析规划失地农民一旦失去土地可能面临的问题,提出规划失地农民就业转型机制:政府根据本地区经济发展的远景,以提高土地的利用率为前提,在本地区交通基础设施规划的基础上统筹规划本地区城乡,做到城镇、工业区域相对集中,便于社会公共服务投放,有效减少失地农民;通过改变农民的就业观以及提高其就业能力,增加企业的社会责任制度建设,增加失地农民的就业机会。     

新媒体背景下的传统媒体应对——基于媒体公信力的视角

媒体公信力是媒体生存的根基。新媒体技术的崛起从三个方面对传统媒体的公信力形成冲击：弱化了传统媒体的＂把关人＂角色、对传统媒体报道新闻的表现手段及消费方式形成冲击、对传统媒体的经营和管理手段提出新的挑战。在新媒体背景下传统媒体应发挥权威的鉴定者角色,打造透明新闻。面对公民新闻的压力,传统媒体应向受众赋权,加强对新媒体资源的整合、组织能力。媒体管理中还应融入更多自律手段,重塑媒体公信力。     

区域经济背景下区域空间发展规划比较研究

区域经济的增长是区域、城市空间发展的基础,区域空间发展规划是推动区域经济增长和区域、城市空间发展的主要措施。基于传统欧几里德式空间地理学与新关系地理学之间的区别,建立比较模型,分析研究欧洲空间发展展望和珠江三角洲区域空间发展规划,对比研究两个空间规划中所运用的空间地理学理论及核心概念的特征。当代高速的物质流和信息流使得区域、城市空间的联系不只依赖客观相邻性,传统欧几里德式空间地理学指导下的空间发展规划与现实脱节,中国空间发展规划中运用理论应趋于新关系地理学。