6500m~3/h空分设备分子筛纯化器电加热器改造

介绍了6 5 0 0m3 /h空分设备分子筛纯化器新配电加热器电加热管烧断的故障现象,分析了故障原因,后通过增加气体挡板解决了问题;并通过改造,既达到了分子筛纯化再生的技术要求,又实现了电加热器的一用一备     

空分设备项目投资经济性分析

以一具体项目为例描述了如何用净现值法和内含报酬率法来进行空分设备项目投资的经济性分析及进口(合资)和国产空分设备方案的选择。     

Surface oxidation behavior of Mg-Y-Ce alloys at high temperature

After the Mg-Y-Ce magnesium alloy was exposed to air at a temperature up to 1173 K for 0.5 hours, the dense and compact oxide film formed on the surface. Accordingly, oxidation and ignition of magnesium alloys at elevated temperature was successfully retarded by the Y and Ce additions. Thermogravimetric measurements in air revealed that the oxidation dynamics curves measured at 673 and 773 K followed the parabolic-line law and the curve investigated at 873 K followed the complicate quartic law. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis indicated that the oxide film on the surface of Mg-Y-Ce alloys exhibited a duplex structure, which agreed with the results of thermodynamic analysis. The oxidation film included two layers: the outer layer was a multiple structure of Ce_0.202Y_0.798O_1.601 and Y₂O₃, and the inner layer mainly consisted of metal Mg and MgO.     

以客户为中心，建立紧密客户关系

从武汉钢铁股份有限公司对客户认识上的三次飞跃入手，从公司赢得客户的具体做法、与客户接触、处理客户的投诉、改进与客户的关系等四个方面论述了武汉钢铁股份有限公司以客户为中心，不断更新认识观念、改进服务技术、提高服务能力，从而赢得客户，与客户建立紧密的相互关系。     

关于企业文化建设的思考

人类社会的发展和科学技术的进步，将企业管理理论的发展推到了文化管理的崭新阶段。以企业文化建设为统领地位的企业管理模式，成为了后续企业管理领域不可逆转的发展趋势。我国的企业文化建设还只是处于初级阶段，因此，关于企业文化和企业文化建设的研究，是我国理论界和企业界需要共同面对的一个亟待深入开掘的重大课题。     

Evaluating Acceleration Ability of Electrons of SiO_2 and ZnS in ZnS∶Er Electroluminescence

SinceCoeyandSun[1]discoveredtheinterstitial compoundSm2Fe17Nx,ithasattractedmanyresearch ers′attention.Asakindofpermanentmagneticmate rial,Sm2Fe17Nxexhibitsfairlyhighsaturationmagneti zation(1.54T)[2],highanisotropyfield(14T)under roomtemperatureandhighC…     

探索城市改造中的建筑设计策略--深圳市盐田区深盐路建筑改造设计

以现代城市设计理论为指导,阐述深盐路建筑改造设计的原则,方案构思及项目实施成果。     

Exploring Two-Wave Reciprocal Structural Relations Among Orthographic Knowledge, Phonological Sensitivity, and Reading and Spelling of English Words by Chinese Students.

In a 2-wave study of a cohort of 108 Chinese students (10- to 11-year-olds) learning English as a second language, the authors examined the relative effects of three Time 1 latent constructs-- orthographic knowledge, phonological sensitivity, and word identification (reading and spelling of regular and exception words)--on the respective Time 2 performance. The authors posited autoregressive effects, in which Time 1 constructs affected their matching Time 2 performance (e.g., Time 1 orthographic knowledge on Time 2 orthographic knowledge), as well as reciprocal cross-domain effects (e.g., orthographic knowledge on word identification and vice versa). The model converged to a proper solution with reasonably good fit. The results suggest (a) strong stability in the children's word identification and phonological sensitivity, (b) substantial effects of word identification on subsequent orthographic knowledge and phonological sensitivity, particularly the former; and (c) greater variations in individuals' growth of orthographic knowledge. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

模拟分析技术在西西工程建筑节能设计中的应用

模拟分析技术是实现建筑节能设计的重要手段,本文简单介绍了建筑节能设计中常用的模拟分析技术,并以北京西西4#地工程为例,介绍了模拟技术在建筑设计中的部分应用,说明模拟分析技术可以有效的辅助建筑节能设计工作.     

基于EMD的时频熵在齿轮故障诊断中的应用

提出了一种基于EMD(EmpiricalModeDecomposition)方法的时频熵齿轮故障诊断方法。首先利用EMD方法分解齿轮振动信号,然后将得到的内禀模态分量进行Hilbert变换,以得到振动信号的时频分布,将信息熵理论引入时频分布,定量描述时频平面上不同时频段的能量分布,各时频段能量分布的均匀性可以反应齿轮的运行状态的差别,从而可以通过时频熵的大小判断齿轮的工作状态和故障类型。实验证明该方法能有效的判断齿轮故障特征,为齿轮故障诊断提供了新的思路。