电磁力驱动液体流动及流动显示方法

阐述以电磁流体和电磁流体力学理论为基础,应用硫酸铜溶液作为产生电磁流体流动现象的一种液体,用金属铜板作为产生匀强电场的极板,用密绕的长直螺线管产生匀强磁场的方法,设计出液体在电磁力作用下的流动实验方法及流动的显示方法.     

Nanocontainer aqueous systems for removing polymeric materials from marble surfaces: A new and promising tool in cultural heritage conservation

The present study dealt with the characterisation of marble surfaces coated by three kinds of polymeric material usually employed in stones conservation and with the evaluation of the removal of these coatings from the surfaces by means of new nanocontainer aqueous systems constituted of micellar solutions (MS) and oil-in-water microemulsions (MC). The polymeric coatings were also subjected to accelerated artificial ageing in order to detect possible effects associated to natural photochemical ageing. The aim of the work was the assessment of the performance of such nanocontainer aqueous systems taking acetone (Ac) as a reference “traditional” solvent for the removal procedure. The characterisation was carried out by means of Scanning Electron Microscopy (SEM) and Environmental Scanning Electron Microscopy (ESEM), Fourier Transform Infra-Red (FTIR) and Nuclear Magnetic Resonance (NMR) spectroscopies and the results obtained showed that the performance of these innovative methods based on nanocontainer aqueous systems can be considered highly promising in the view of a “green approach” to the conservation of cultural heritage.     

含DMPP硫硝铵不同基追肥比例对小青菜硝酸盐累积及品质的影响

采用土培试验对含硝化抑制剂DMPP(3，4-二甲基吡唑磷酸盐)硫硝铵(ASN)氮肥(简称ASN DMPP)不同基追肥比例对小青菜硝酸盐累积及营养品质的影响进行了探讨．结果表明，等氮量(每千克土用0．5g氮)施用条件下基肥75％、追肥25％的基追肥比例不仅可提高蔬菜产量、降低硝酸盐含量，还可提高Vc、氨基酸、Zn、N、K含量，改善了蔬菜品质。     

煤中各种形态硫的测定及相关问题探索研究

本文阐述了煤中各种形态硫测定中的原理及一些相关问题,着重讨论硫酸盐硫和硫化铁硫的测定。     

氨-铵法处理氧化铜矿制备饲料硫酸铜的研究

本评介绍了用NH_3—NH_4HCO_3浸提氧化铜矿,直接制备饲料硫酸铜的方法.本方法可以充分利用氧化铜矿资源,具有产品质量高、成本低、环境污染小的优点,能产生很好的经济效益.     

氧化絮凝法处理活性大黑染料废水的研究

以硫酸铝铁溶液为絮凝剂,高锰酸钾溶液为氧化剂,采用氧化絮凝的方法处理活性大黑染料废水,考察了絮凝剂与氧化剂用量比、絮凝时间、温度、pH等对脱色率和CODCr去除率的影响,确定最佳条件：絮凝剂与氧化剂的摩尔比为3.45∶0.14,pH=1,θ=30℃,絮凝时间t=1 h,脱色率可达99.13%,CODCr去除率达66.81%.如果采用两段处理法,脱色率可进一步提高到99.88%,CODCr去除率达85.13%.砖末二次吸附后,脱色率达99.24%,CODCr去除率达77.05%.     

酸性硫酸盐土的可持续利用技术及对策

在对酸性硫酸盐土的酸害爆发过程及其受控因素、可持续利用技术与对策进行探讨基础上,认为酸性硫酸盐土的酸害程度主要取决于土壤中黄铁矿的氧化、土壤的自我缓冲和酸性物质的运移在内的3个过程的相对强弱与综合作用结果;总结了包括水分管理与调控、生态培肥与耕作栽培3个方*酸性硫酸盐土;控制;可持续利用;技术;对策     

Morphological characterization of Al_2O_3 membrane fabricated by sol-gel dip-coating method

1 Introduction Alumina membrane has received considerable atten-tion for its thermal ,chemical and mechanical stabilityin filtration applications .Alumina membraneis usuallyprepared by sol-gel process ,in which uniform nano-meter-sized particles can be pr…     

溶胶-凝胶浸渍法制备氧化铝膜的形貌表征

Alumina membranes without pinholes and cracks were prepared by the sol-gel process using anunordum aluminium sulphate as the starting material. The effects of different preparing conditions on morphology characteristics of the membrane were investigated by scanning electron microscopy and 3D rotational microscopy. The preparing conditions include the amounts of drying control chemical additives （DCCA）, sintering procedure and sol-gel concentration. The results showed that PVA is a good crack-preventing reagent and the morphology of supported membranes was affected by ninny factors, including Al2O3 concentration, PVA/Al2O3 ratio, heating rate, membrane thickness and intrinsic defects of the substrate surface.     

电磁力驱动液体流动及流动显示方法

阐述以电磁流体和电磁流体力学理论为基础,应用硫酸铜溶液作为产生电磁流体流动现象的一种液体,用金属铜板作为产生匀强电场的极板,用密绕的长直螺线管产生匀强磁场的方法,设计出液体在电磁力作用下的流动实验方法及流动的显示方法.