Rich hydrogen production from crude gas secondary catalytic cracking over Fe/γ-Al2O3

It is generally acknowledged that the continuous production of rich hydrogen is made by using a sequential biomass pyrolysis reactor which combines the pyrolysis of rice husks with the secondary decomposition of gaseous intermediate. Fe/γ-Al₂O₃ catalyst was prepared by incipient wetness impregnation. The result shows that Fe/γ-Al₂O₃ could fully convert biomass pyrolysis volatile into gaseous products, such as H₂、CH₄、CO etc. And the reaction activities of the catalysts are greatly influenced by the calcination temperature of catalysts, the secondary catalytic pyrolysis temperature and Fe/Al mass ratio. The catalyst is characterized by temperature programmed revification (TPR), X-ray diffraction (XRD), scan electron microscope (SEM) and thermogravimetry(TG). The result indicates that the activity centre of Fe/γ-Al₂O₃ is Fe²⁺ and Fe⁰. In brief, the main processes are that large molecule organics in bio-oil decompose into gaseous products, meanwhile the gases are catalytic reformation.     

栀子蓝色素稳定性的研究

研究了栀子蓝色素的热稳定性，光稳定性，耐氧化还原性和ｐＨ值稳定性，并就食品中常见的几种金属离子：Ｆｅ３＋、Ｆｅ２＋、Ｋ＋、Ｎａ＋、Ｚｎ２＋、Ｍｇ２＋、Ｃｕ２＋、Ａｌ３＋和常用添加剂对蓝色素稳定性的影响进行了探讨。结果表明，该色素性能优良，具有广阔的开发应用前景。     

电泳底漆重涂配套性不良的事故分析

根据出口商用车底盘件电泳底漆后粉末重涂时出现的配套不良的质量事故,通过工艺试验分析,讨论了导致重涂配套性不良的原因,并据此分析和研究了有机硅类流平剂在不同含量时对电泳底漆重涂配套性的不同影响。     

滑动轴承的油量及油路对轴承的影响

介绍了滑动轴承润滑系统中，润滑油量与进油温度、润滑油牌号有密切的关系，重点就轴承内部油路对滑动轴承使用性能的影响进行了研究，并列举了实例来进一步说明正确选择滑动轴承的油量、油路的重要性。     

再流焊锡珠的形成与预防

SMD表面贴装器件在再流焊接时常有锡珠产生，锡珠会导致线路短路、造成产品的质量隐患，本文详细分析锡珠产生的原因，并提出预防措施。     

PESEDOSPECTRAL-MULTIWAVELET-GALERKIN METHOD FOR ADVECTION-DIFFUSION PROBLEM WITH COMPLEX BOUNDARY

The element of pesedospectral-multiwavelet-Galerkin method, and how to combine it with penalty method for treating boundary conditions are given. Multiwavelet bases don't overlap on the given scale, and possess the same compact set in a group of several functions, so they can be directly used to the numerical discretion on the finite interval. Numerical tests show that general boundary conditions can be enforced with the penalty method, and that pesedospectral-multiwavelet-Galerkin method can well track the solutions' development. This also proves that pesedospec-tral-multiwavelet-Galerkin method is effective.     

级联离散小波多频带分解注意力图像去噪方法

针对图像去噪网络中下采样导致高频信息损失和细节保留能力差的问题,设计了一种级联离散小波多频带分解注意力图像去噪网络。其中多尺度级联离散小波变换结构将原始图像分解为多个尺度下的高低频子带来代替传统下采样,能减少高频信息损失。多频带特征增强模块使用不同尺度的卷积核并行处理高低频特征,在子网络每一级下重复使用两次,可增强全局和局部的关键特征信息。多频带分解注意力模块通过注意力评估纹理细节成分的重要性并加权不同频带的细节特征,有助于多频带特征增强模块更好地区分噪声和边缘细节。多频带选择特征融合模块融合多尺度多频带特征增强选择性特征,提高模型对于不同尺度噪声的去除能力。在SIDD和DND数据集上,所提方法的PSNR/SSIM指标分别达到了39.35 dB/0.918、39.72 dB/0.955。实验结果表明,所提方法的性能优于主流去噪方法,同时具有更清晰的纹理细节和边缘等视觉效果。     

基于ARM6410的WIFI实现

为了满足ARM6410接入WIFI无线网络,本文提出了一种采用AW-GH381作为外围接口芯片,并采用SDIO作为接口方式与ARM6410进行硬件连接的方法。并对操作系统和驱动软件进行了说明。     

Fuzzy comprehensive evaluation of district heating systems

Selecting the optimal type of district heating (DH) system is of great importance because different heating systems have different levels of efficiency, which will impact the system economics, environment and energy use. In this study, seven DH systems were analysed and evaluated by the fuzzy comprehensive evaluation method. The dimensionless number—goodness was introduced into the calculation, the economics, environment and energy technology factors were considered synthetically, and the final goodness values were obtained. The results show that if only one of the economics, environment or energy technology factors are considered, different heating systems have different goodness values. When all three factors were taken into account, the final ranking of goodness values was: combined heating and power>gas-fired boiler>water-source heat pump>coal-fired boiler>ground-source heat pump>solar-energy heat pump>oil-fired boiler. The combined heating and power system is the best choice from all seven systems; the gas-fired boiler system is the best of the three boiler systems for heating purpose; and the water-source heat pump is the best of the three heat pump systems for heating and cooling.     

简约·细致·亲和力——大连隆泉华庭小区

本文介绍了大连隆华庭小区设计的大庭院与周边环境的共生,住宅本体与空间环境的一体化的规划概念和实践,提出重视居住环境,空间,氛围的营造,重视小区的价值区域分析增加积极空间,设计手法应细致,质朴,人性化等新观点。