1000MW超超临界燃煤机组启动分析

以徐州彭城电厂三期工程1 000 MW超超临界机组为例,介绍机组在各种启动工况下的特点,以及启动过程中需要注意的事项,为机组的安全、快速启动作出了一定的尝试与探索,供同类型机组的启动工作参考。     

改进生物化学实验教学提高学生综合能力

介绍了生物化学实验教学的重要地位,讨论了传统教学中存在的一些问题,并从生物化学实验课时的安排、加强实验教学过程中的师生互动、办好第二课堂做好实验室的开放、改革生物化学实验考评方法、提高实验室教学队伍五个方面来阐述了生物化学实验教学需要改革的方向.     

徐州彭城电厂三期工程2×1000MW超超临界机组启动调试特点

介绍徐州彭城电厂三期工程1 000 MW超超临界机组的设计和设备情况,系统阐述机组启动调试的程序安排和主要特点,选取几个关键控制节点,就2台机组的调试进行分析比较,对2台机组启动调试过程中出现的主要问题进行原因分析,并提出解决的方法和采取的措施,对同类型机组启动调试具有一定的借鉴和参考价值。     

Impacts of Vegetation on the Intraseasonal Oscillation Simulated by the Community Atmosphere Model (CAM3)

The influences of vegetation on intraseasonal oscillation (ISO) were examined using the Community Atmosphere Model version 3 (CAM3). Two 15-year numerical experiments were completed: the first was performed with a realistic vegetation distribution (VEG run),and the second was identical to the VEG run except without land vegetation (NOVEG run). Generally speaking, CAM3 was able to reproduce the spatial distribution of the ISO, but the ISO intensity in the simulation was much weaker than that observed in nature: the ISO has a relatively much stronger signal. A comparison of the VEG run with the NOVEG run revealed that the presence of vegetation usually produces a weak ISO. The vegetation effects on ISO intensity were significant over West Africa and South Asia, especially in the summer half-year.Vegetation also plays an important role in modulating ISO propagation. The eastward propagation of the ISO in the VEG run was clearer than that in the NOVEG run over the West African and Maritime Continent regions. The northward propagation of the ISO in the VEG run was more consistent with observation than that in the NOVEG run.     

建设矿山公园弘扬矿冶文化——黄石国家矿山公园建设实践和启示

0 引言 黄石国家矿山公园位于湖北省黄石市大冶武钢矿业公司大冶铁矿内. 大冶铁矿自公元226年开采以来,已有1 782年历史,是一个多金属的大型铜铁矿山,更是一个矿冶文化底蕴深厚的古老矿山.进入新世纪,随着东露天采场闭坑,矿石产量锐减,资源接续已成为矿山可持续发展的深层次矛盾.为此,该矿积极申报建设黄石国家矿山公园,启动深部开发矿产资源、深度开发文化资源的"双深战略",确定了"建设可持续发展的文化矿山"的战略目标,使一个资源逐年减少的百年老矿逐步打造成为资源富矿、经济强矿、文化大矿,实现经济文化的全面复兴.     

Delphi环境下基于UDP的聊天程序

利用UDP协议实现局域网内点到点通信。     

Objective Information Theory Exemplified in Air Traffic Control System

Information is the core of Air traffic con-trol system (ATCS).In this paper,objective information theory is extended to depict,model and measure the information exemplified in ATCS.The sextuple model is presented with information ontology,state occurrence time,state set,carrier,reflection time,and reflection set.The metric system is given to quantitively measure the information with extensity,detailedness,continuity,richness,containability,delay,pervasiveness,authenticity,and adaptability.The results show that the proposed method is potential to find out actual indexes in ATCS for flight safety.     

Rapid 3D human body modeling based on Kinect technology

The 3D shape of the human body is useful for applications in fitness,games and apparel.Accurate body scanners,however,are expensive,limiting the availability of 3D body models.In this paper,we focus on the human body 3D modeling using one Kinect sensor modeling method.To get the human body model fast,three steps in rapid modeling of the human body are carried out.Firstly,according to anthropometric parameters,the standard model is parameterized;Secondly,the Kinect depth image of the human body model is gotten through,then,by using the PCL library the point cloud data is processed and matched,and the human body model is optimized;Finally,the realistic human body model is obtained with the rapid integration of the standard model and PCL library.     

磺化聚苯乙烯/聚乙烯醇交联膜的制备与性能

以磺化度为75%的磺化聚苯乙烯(SPS)和聚乙烯醇(PVA)为原料,按一定的配比共混后浇铸成膜,在程序升温的过程中进行热交联,通过控制不同交联时间得到不同交联密度的交联膜.考察了交联膜的离子交换容量(IEC)、吸水率、溶胀性和尺寸稳定性;利用原子力显微镜和交流阻抗仪对交联膜的表面形貌及电导率进行了表征.结果表明:交联膜的IEC值略有降低;吸水率和溶胀度得到了很好的控制,具有较好的尺寸稳定性;膜表面出现了明显的亲水相和憎水相相分离,且亲水相微区的聚集尺寸和连续性随交联时间的长短而变化;随交联时间的延长,交联膜的电导率值略有下降,但交联后膜的室温电导率仍高于0.01 S/cm.     

多弧离子镀与磁控溅射共沉积TiN/TiCN多层膜的高温抗氧化性能

TiN/TiCN多层膜的高温抗氧化性研究对于扩大其应用领域具有重要作用,但目前鲜见相关报道。采用多弧离子镀与磁控溅射技术以不同调制周期在304不锈钢表面共沉积TiN/TiCN多层膜。采用XRD、XPS、倒置显微镜及高温氧化试验研究了多层膜的高温抗氧化行为。结果表明:TiN/TiCN多层膜表面光滑平整、均匀致密,薄膜主要为具有Ti-(C,N)键的fcc-TiN结构;随着调制周期的减小,TiN/TiCN多层膜生长取向发生转变,且具有(111)晶面生长织构;随着氧化温度的升高,多层膜的显微硬度逐渐降低,氧化增重速率不断增大,且在700℃之后变化速率较快,薄膜的开始氧化温度约为750℃;随着调制周期的减小,多层膜TiN与TiCN界面层数量增多,促使晶粒细化,提高了其致密性,还隔断了缺陷贯穿薄膜的连续性,显著降低了薄膜的孔隙率,致使O原子扩散困难,增强了薄膜的高温抗氧化性能。