球式热风炉耐火球床参数选择

简述球式热风炉结构特点,对球式热风炉耐火球床参数的选择进行研究。     

用对羧基苯偶氮硫代若丹宁柱前衍生高效液相色谱法测定氰化尾渣中的金、铂、钯、铑的研究

研究了用对羧基苯偶氮硫代若丹宁 (CPATR)为柱前衍生试剂 ,以安捷伦ZORBAXStableBound (4 .6mm× 5 0mm ,1.8μm)快速分离柱为固定相 ,42 %的甲醇 (内含 2 %的醋酸 )为流动相 ,高效液相色谱分离 ,二极管矩阵检测器检测测定金、铂、钯、铑的的方法 ,4种贵金属元素的络合物在 2 .0min内可达到基线分离。根据信噪比 (S/N =3 )得各金属离子的检测限分别为 :金 1.5 μg·L- 1 ,铂 1.0 μg·L- 1 ,钯 0 .6μg·L- 1 ,铑 0 .8μg·L- 1 ,方法用于氰化渣样品中痕量金、铂、钯、铑的测定 ,相对标准偏差平均值在 2 .2 %～ 2 .7%之间 ,标准回收率平均在96%～ 10.2 %之间 ,结果令人满意     

CVD制备Ir/Re复合材料的显微组织和再结晶研究

采用CVD方法制备了Ir/Re复合材料。研究了Ir层中Ir晶粒的形貌和生长特点,计算得到Ir晶粒生长动力学方程:(x2-x02)/t=4.31×103exp(-2.65eV/kT)(μm2·s-1)。研究了CVD过程中Re层表面晶粒生长和V,W型浸蚀纹的关系。对靠近Ir层的细晶粒区和Re层中部的柱状晶粒区中Re晶粒的再结晶长大进行了研究,计算得到柱状晶区中Re晶粒的生长动力学方程:(x2-x02)/t=2.55×103exp(-1.52eV/kT)(μm2·s-1),研究了Ir/Re扩散、Re扩散对细晶区中Re晶粒生长动力学的影响。     

Template synthesis of BaFe<Subscript>12</Subscript>O<Subscript>19</Subscript> ordered nanowire arrays by a new method

A method that the precursor is generated in situ and shaped into the one dimension nanostructure in the nanochannels of the anodic alumina membrane (AAM) template is described. The high-aspect ratio nanowire array of the BaFe₁₂O₁₉ was prepared by means of this method. Electron microscope images showed that the BaFe₁₂O₁₉ nanowire array was abundant, uniformly distributed and well-ordered in the large area. It is estimated from the electron microscope images that the diameter of the individual nanowire is about 60 nm and the length was corresponding to the thickness of the applied AAM template. The analysis of X-ray diffraction demonstrated that the BaFe₁₂O₁₉ nanowires have a hexagonal structure of the pure phase BaFe₁₂O₁₉.     

来自西方的第一声设计号角

在联想、海尔、TCL的东风西浙如火如荼时,在新浪，搜狐，百度在纳斯达克光彩照人时，在中国企业开始激烈讨论自主品牌时，西方的制造业和设计界开始对中国制造和中国设计疯狂着迷了，美国伊利诺伊理工学院设计学院（IIT）有一个不错的校友录．因为这里汇集着众多老牌和新秀著名企业品牌的设计高层职位，其中的华人势力近几年也渐强起来，这也许对美国来说是某种信号，IIT此次策划的设计策略与中国品牌峰会可能也是一个信号，虽只是一次尝试，但会议的国外票席早在两个月前就已售罄，他们究竟想来讨论什么？或只是试水？我们拭目以待。     

包装设计教学刍议——肇庆学院美术系学生作品点评

包装设计是平面设计专业中的一门重要课程，它贴近生活．实践性强，且涉及面广．几乎涵盖了平面设计领域的所有知识。通过它可以充分体现学生的设计潜能及对综合知识的统筹规划，合理安排的能力。     

Optical and morphological properties of chemically synthesized poly3-octylthiophene thin films

Poly3-octylthiophene (P3OT) was synthesized by direct oxidation of 3-octylthiophene using FeCl₃ as oxidant/catalyst. It was observed that the purity of FeCl₃ affected the molecular weight and polydisparity as well as the degree of regioregularity of the polymer, measured by size exclusion chromatography and by ¹H nuclear magnetic resonance, respectively. Optical absorption properties of the P3OT films were analyzed as a function of solution concentration, the type of the substrates and the mole percentage of the doping agent. Morphology study with atomic force microscopy indicates that the surface roughness and the cluster size of the polymeric films are influenced by the P3OT solution concentration and the percentage molarity of ferric chloride. FeCl₃ doped P3OT films show enlarged clusters compared with the pristine one due to the introduction of FeCl₃ molecules in the original P3OT chains, a phenomenon observed in electrochemically doped heterocyclic conducting polymers reported in the literature.     

中空纤维膜氢回收系统在制氢装置的应用

简述了中空纤维膜分离原理、开车步骤，分析了中空纤维膜氢回收系统标定数据，指出存在的问题，并进一步对比分析了加氢干气直接作为制氢原料和用中空纤维膜氢回收系统的非渗透气作为制氢原料的优缺点．     

Structural and ferroelectric properties of La modified Sr0.8Bi2.2Ta2O9 thin films

La modified SBT (Sr_0.8La_0.1Bi_2.1Ta₂O₉) thin films of different thickness were fabricated on Pt/Ti/SiO₂/Si substrates by the metalorganic decomposition technique. All the films were annealed layer-by-layer at 800 °C using a rapid thermal annealing furnace. X-ray diffraction analysis indicated that the relative intensity of the (2 0 0) diffraction peak [I(2 0 0)/I(1 1 5)] increased with the increase of the film thickness. Eventually, an a-axis preferentially oriented SLBT film was obtained. These results are discussed with respect to the anisotropy of the grain growth. The a-axis preferentially oriented SLBT film, whose relative intensity of the (2 0 0) peak [I(2 0 0)/I(1 1 5)] was 1.05, had a remanent polarization (2P_r) value of 21 μC/cm² and a coercive field (2E_c) value of 70 kV/cm under the electric field of 200 kV/cm.