大型轧机轧辊的质量与寿命分析

轧辊的使用寿命与其材质，设计，机械加工以及内部金相组织等因素有关。通过对失效轧辊的检验分析，找出报废原因及改进措施。     

钢丝酸洗中氢脆的形成及预防措施

钢丝在酸洗过程中，如果操作不当，会产生各种缺陷，氢脆就是其中一种。介绍了氢脆形成的原因，指出了氢脆的危害。提出了避免氢脆产生的具体措施。     

中国石化培训品牌建设实践分析

中国石化集团公司各培训机构长期以来在培训品牌建没方面进行大量实践,取得了一定的成果。在品牌培训项目、品牌培训课程建设以及品牌培训师资培养方面都积累了经验,有许多成功的做法。其中,保证培训质量和水平,突出项目、课程和教师的优势与特色,是培训品牌建设的基础环节。     

双向连接的智能家居控制系统研究与设计

智能家居已经在人们的生活中扮演着重要的角色,尤其在办公、展览等公共场所。当前市场已经有许多智能家居的解决方案付诸使用,但不同的解决方案实际效果参差不齐,各有所长。针对市面上智能家居产品普遍不能获取设备状态以及控制方式单一等缺点,提出了一种新的解决方案。该方案采用ADK实现,配合Android设备,可以实时获取家居设备状态,并能方便的通过多种方式控制。     

增产喷气燃料和尾油加氢裂化技术在2.0 Mt/a高压加氢裂化装置的工业应用

中国石化北京燕山分公司2.0 Mt/a高压加氢裂化装置在第二生产周期以多产喷气燃料和尾油产品为主要生产方向,采用增产喷气燃料和尾油加氢裂化技术及配套催化剂后的工业运行结果表明,与第一生产周期相比,装置采用该技术及配套的RN-32V/RHC-3催化剂后,在增产喷气燃料、生产优质尾油方面有显著提升,喷气燃料收率较第一生产周期提高6.63百分点,在保持尾油收率相当的情况下,尾油BMCI值下降2个单位,装置能耗逐年降低,2011年平均综合能耗降低到830.98 MJ/t。     

Influence of Magnetic Annealing on Properties of SmFe Thin Films

SmFe thin films were prepared by DC magietron sputtering at room temperature and 300 %. The influence of magnetic annealing temperature on the phase structure and magnetic properties was investigated. Results showed that thermal sputtering followed by a heat treatment process helped to obtain a structure with a relatively large fraction of SmFe2. Residual phases observed were α-Fe, Sm2O3, and unknown phases. During the annealing treatment, the intrinsic compressive stress in SmFe films was relieved and could become tensile at higher annealing temperatures. The degree of in-plane anisotropy weakened, and furthermore, the anisotropy transformed into out-of-plane anisotropy.     

废SCR催化剂中的污染物及环境风险分析

中国氮氧化物（NO_x）排放量中约有70%源自煤的燃烧,而且随着环保力度的逐渐加大及大气污染物的排放标准要求逐年提高,控制燃煤电厂NO_x的排放成为当务之急 。中国普遍采用选择性催化还原法（SCR）作为燃煤尾气脱硝的方法,由此导致废SCR催化剂的产量逐年上升,预计2020年中国废SCR产生量将达到19万m³。虽然中国目前已经开展了废SCR催化剂资源化与无害化的研究,但是关于废SCR催化剂的环境风险评价却鲜有报道。概述了SCR催化剂的成分、催化原理以及废SCR催化剂的产生原因,介绍了废SCR催化剂中的主要污染物及其对环境的危害,同时简要分析了废SCR催化剂存在的环境风险及其评价方法,为中国废SCR催化剂的资源化和处理处置提供了有益参考。     

Effects of substrate temperature and annealing treatment on the microstructure and magnetic characteristics of TbDyFe films

A series of TbDyFe films were prepared by DC magnetron sputtering. The effects of substrate temperature and annealing temperature on the phase structure and the magnetic properties of the sample films were investigated. The an-nealing treatment has a significant influence on the microstructure and the magnetic properties of the sample. The results obtained by XRD indicate that the films deposited at a temperature lower than 525℃ are amorphous and have an easy magnetization direction perpendicular to the film plane. An RFe2 phase is formed in the sample annealed at 550℃ and the residual phases observed are Fe and rare earth oxide. The magnetic properties Hc and Mr/Ms of the film annealed at 550℃ obtain the maximum values,for which the formation of the RFe2 phase is mainly responsible. An annealing treatment leads to a rotation of the sample’s easy axis from being parallel to the film surface to becoming vertical.     

膜片联轴器的使用特性及其在中国应用的十年

本文结合高弹性膜片式挠性联轴器本身固有的特性,从技术角度介绍此种弹性元件自研制成功的十年来在我国典型的应用情况。     

Comparison of Bertrand and Cournot competitions under random yield

We look at a Bertrand model in which each firm may be unreliable with random yield, so the total quantity brought into market is uncertain. Under mild conditions, the Bertrand model with random yield has a unique Nash equilibrium, in which the prices and production quantities are determined by each firm’s production cost and reliability. In the case of symmetric firms, we compare Bertrand competition with Cournot competition by numerical examples, and find that Bertrand competition yields lower prices and less profits than Cournot competition. Furthermore, in the case of symmetric firms with 0–1 yields, we explicitly show that Bertrand competition yields lower prices and less profits than Cournot competition, and the comparison between the quantities of Bertrand and Cournot competition is dependent on the value of reliability. When the reliability is high, Cournot competition yields less quantities than Bertrand competition. Otherwise, the other hand holds.