2008年钼制品市场年评

为了研究我国钼制品行业的发展情况,本文以对2008年国内外钼制品市场行情走势的回顾为切入点,对国内外钼制品市场运行状态展开分析,并指出了钼制品市场在全球经济危机全面爆发以及国内相关政策调整时所面临的机遇与挑战.同时,就钼制品企业如何应对经济危机中的机遇与挑战作了具体阐述,并对2009年的钼制品市场运行作了相关预测.     

悬浮浇注法对轴承钢锭温度场及偏析的影响

对比研究了普通浇注、低过热浇注和悬浮浇注三种不同工艺方法对轴承钢锭的温度场和成分分布的影响。结果表明，悬浮浇注能有效地改善轴承钢锭的温度分布，极大地改善钢锭横截面上的碳、硫、磷元素的中心偏析，提高了轴承钢锭的质量。     

Effect of Microstructure on Corrosion Fatigue Behavior of 1500 MPa Level Carbide-Free Bainite/Martensite Dual-Phase High Strength Steel

  Influence of microstructure of the experimental steels on the corrosion fatigue behavior in 35% of NaCl aqueous solution was studied. Experimental results show that compared with the full martensite (FM) steel, the carbide free bainite/martensite (CFB/M) steel has higher corrosion fatigue strength and corrosion fatigue crack threshold (ΔKthcf), and lower corrosion crack propagation rate [(da/dN)cf].     

Effect of rare earth addition on Cu-Fe/AC adsorbents for phosphine adsorption from yellow phosphorous tail gas

Phosphine(PH3) is a highly toxic air pollutant,commonly produced in phosphorous chemical industry.But it has received less research attention due to its handling difficultly.CO is the main content of the phosphorous chemical industry tail gas,the concentration of which is always more than 80 vol.%,and it can be the feed gas to produce various valuable products such as formate,oxalate,and methanol and so on.But,PH3 is one of the important barriers,which is harmful to the following chemical process.In order to make use of the tail gas,PH3 should be removed firstly,and CO should be covered in the whole purified procedure at the same time.In this work,the modified activated carbon(MAC) was used as the adsorbent to separate PH3 from the mixture tail gas.Series of MAC adsorbents were prepared for the adsorption of PH3,which loaded Cu-Fe and Ce(La),or separately.The PH3 adsorption capacities,chemical and physical properties of MAC were all investigated.The results showed that over 99% PH3 adsorption efficiency was achieved when used MAC adsorbents.The removal efficiency and PH3 adsorption capacity of the Cu-Fe-Ce/AC(20:1:0.4) were both much higher than those modified activated carbons.The maximum PH3 adsorption capacity was 71 mg of PH3/g of MAC on the Cu-Fe-Ce/AC,which were much higher than literature data using CuO only for adsorbing hydride gases.     

梅山高炉瓦斯泥综合利用的研究

分析研究国内外高炉粉尘使用情况，结合梅山高炉瓦斯泥的性质、特征和现状，提出用弱磁-强磁选的选矿方法，从梅山高炉瓦斯泥中回收铁精矿的设想。通过试验室试验，取得了较好的技术经济指标，达到了预期效果，并可降低锌含量。     

激光烧结法制备原位增强型多孔镍基复合材料

对自熔性镍基合金和TiH_2的混合粉末进行了激光烧结实验,并采用XRD、SEM、EDX等分析手段对烧结试样的微观组织结构进行了表征,对试样中的孔结构及析出相的成形机制进行了初步探讨.结果表明,烧结后试样中存在原位增强相TiC、TiB_2和孔结构;大量微米级尺寸的圆孔以及呈放射状或针叶状的高温强化相CrB均匀分布于基体中.     

发酵产柴胡皂苷酶的研究

研究了用酶水解柴胡皂苷分子上的部分糖基，使皂苷部分水解生成低糖、高活性皂苷的方法．探讨了3种菌株对柴胡皂苷糖基的水解能力，得到1种具有较高活性的菌株SP．以2，用于水解柴胡皂苷.通过TLC法分析得到柴胡皂苷酶解最佳反应条件为40℃、24h,pH=5．0，在此基础上的酶反应回收率为118.8％.     

VC＋＋中利用Matcom进行数据拟合

利用Matcom将MATLAB和Visual C＋＋结合起来,充分发挥各自的优势,是编制高效程序的有效途径。介绍了如何在VC＋＋环境下利用Matcom进行数据拟合,并得到相应拟合曲线的方法。     

高校管理类专业创业指导体系构建研究

构建管理类专业创业指导体系,有助于促进管理类专业学生自主创业,提高学生创业的成功率。研究认为,高校管理类专业创业指导体系构建应遵循＂全面指导与个体指导相结合、引入指导与过程指导相结合、校内指导与校外指导相结合＂的思路,并构建多层次、多渠道和全过程创业指导体系。     

唐钢庙沟铁矿浓缩池小车滑线的改进

由浓缩池小车滑线引发的故障在生产过程中频繁发生,增加了事故时间和设备成本,制约着产量和效益的提升。文章介绍了对滑线进行改进的步骤、方法,通过成功改进,取得了良好的效益。