浅谈流化床干燥器布风板的设计

介绍流化床干燥器所用各种形式布风板的结构。并对其使用情况作了分析。特别对高温布风板的形式进行了探讨。     

气流床水煤浆气化技术的应用现状及开发进展

气流床水煤浆气化是煤高效、洁净利用的一项关键技术。简述了具有代表性的气流床水煤浆气化技术的应用现状及开发进展,并分析了影响水煤浆气化的主要因素,如烧嘴、耐火砖、进料系统、激冷环等,提出了一些改进措施。     

制药工程新专业的建设

我校药学院在创办和建设制药工程专业过程中,通过对国内外该学科的调研和有关专家的论证,确立了制药工程专业的性质、内涵、定位、培养目标、业务要求、专业知识结构与课程体系和创新能力培养,并且在学科建设方面也取得了一些进展.     

远红外丙纶的性能研究

系统测试了采用共混纺丝法研制出的远红外丙纶及织物的物理机械性能、远红外发射性能、保温性能、耐洗涤性能和抗菌性能，并对用远红外丙纶加工的护腿的医疗保健作用进行了临床检测。进而讨论了远红外丙纶及织物的医疗保健作用机理。     

Dynamic watermarking scheme for quantum images based on Hadamard transform

In this paper, a novel watermarking scheme for quantum images based on Hadamard transform is proposed. In the new scheme, a unitary transform controlled by a classical binary key is implemented on quantum image. Then, we utilize a dynamic vector, instead of a fixed parameter as in other previous schemes, to control the embedding process. The dynamic embedding vector is decided by both the carrier quantum image and the watermark image, which is only known by the authorized owner. The proposed scheme is analyzed from visual quality, computational complexity, and payload capacity. Analysis and results show that the proposed scheme has better visual quality under a higher embedding capacity and lower complexity compared with other schemes proposed recently.     

应用炉膛压力诊断气流床气化炉的火焰状态

气化炉是煤气化技术中的关键设备 .气化炉内火焰燃烧稳定性下降 ,会出现燃烧噪音增加、气化燃烧效率降低及熄火等现象 ,对安全性和经济性产生严重的影响 .对气流床气化炉内不同气化燃烧状态下的火焰压力信号进行了小波分析 .结果表明 ,压力信号在一定频段内的分布与气化炉内火焰燃烧的状态密切相关 ,发现随着火焰燃烧稳定性加强 ,气化炉内压力信号向高频方向移动 ,以此可以建立气流床气化炉燃烧诊断模型 .     

Properties and crystallization kinetics of poly(ether ether ketone)‐co‐poly(ether ether ketone ketone) block copolymers

A series of block copolymers composed of poly(ether ether ketone) (PEEK) and poly(ether ether ketone ketone) (PEEKK) components were prepared from their corresponding oligomers via a nucleophlilic aromatic substitution reaction. Various properties of the copolymers were investigated with differential scanning calorimetry (DSC) and a tensile testing machine. The results show that the copolymers exhibited no phase separation and that the relationship between the glass‐transition temperature (T_g) and the compositions of the copolymers approximately followed the formula T_g = T_g1X₁ + T_g2X₂, where T_g1 and T_g2 are the glass‐transition‐temperature values of PEEK and PEEKK, respectively, and X₁ and X₂ are the corresponding molar fractions of the PEEK and PEEKK segments in the copolymers, respectively. These copolymers showed good tensile properties. The crystallization kinetics of the copolymers were studied. The Avrami equation was used to describe the isothermal crystallization process. The nonisothermal crystallization was described by modified Avrami analysis by Jeziorny and by a combination of the Avrami and Ozawa equations. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: 1652–1658, 2005     

MC尼龙/纳米Al2O3复合材料力学性能的研究

采用原位聚合技术制备了纳米Al2O3增强单体浇铸(MC)尼龙复合材料,用扫描电子显微镜观察其断口形貌纳米粒子分布状况,并测试、分析了纳米Al2O3含量对对材料力学性能的影响。结果表明，采用原位聚合技术可获得的纳米粒子分布均匀、综合性能优良的纳米复合材料，当纳米Al2O3质量分数的4%时，MC尼龙/纳米Al2O3复合材料的拉伸强度、冲击强度和弯曲强度均达到最大值，分别比纯MC尼龙提高了19%、33%和11%。     

对乙酰氨基酚的合成与生产

综述了国内外近年来对药物扑热息痛（对乙酰氨基酚）合成与生产方法的研究，主要介绍了二步法、一步法和生化法。提出了无论从经济上还是从环保上考虑，一步催化合成法是当今扑热息痛合成的出路     

挤出机各段温度对开孔型橡塑共混材料性能的影响

研究开孔型橡塑共混材料在不同挤出加工工艺中结构形态及力学性能的变化规律。结果表明，挤出机的机头温度应稍高于发泡剂的分解温度，均化段温度要设在发泡剂分解温度区的低温段，在挤出加工工艺中，要特别注意挤出机均化段温度及机头温度的设定，温度设定不好会使发泡剂无法发挥作用。