我国炼油技术开发的若干思考与建议

分析了我国炼油工业面临的挑战，世界炼油工业的发展趋势，提出了我国炼油技术开发要围绕符合国情的清洁燃料生产技术，炼油与化工结合的炼油技术，适合现有炼油装置技术改造、提高技术水平，降低加工成本的技术，渣油转化技术，煤制油，天然气制油技术，炼油厂智能化的技术，减少炼油厂烟尘排放的技术等7个方面开展工作的具体建议。     

重油催化裂化装置的技术改造

介绍了福建炼油化工有限公司重油催化裂化装置自开工投产以来存在的问题，以及针对这些问题进行改造和改造后所取得的成效，如针对原料重质化、重金属含量高，如何提高产品收率；催化剂跑损，第一、二段再生器烟气混合后发生尾燃的现象以及汽提效率、烧焦效果等问题得到了根本的解决。     

基于BP神经网络的心电图ST段的模式识别

心电图ST段对心脏疾病的诊断具有重要意义.在正确读取采集于郑州大学一附院的运动心电图数据基础上,利用小波变换更准确地确定其ST段的起始和终止位置,初步探讨了BP神经网络用于心电图ST段识别的方法,并用此方法识别出心电图ST段的三种类型-正常、水平压低和抬高.实验结果较好.     

Optical pattern recognition using two-channel joint transform correlation

A new joint transform correlation (JTC) technique, named two-channel JTC (TJTC), is proposed in this paper for optical pattern recognition applications. The TJTC technique independently evaluates the autocorrelation and crosscorrelation values of the reference and the target images and employs a modified decision algorithm. In addition, optical threshold operation and fringe-adjusted filter are incorporated in the proposed technique to enhance the correlation output and to improve the discrimination performance. The proposed technique shows better recognition performance compared to existing JTC techniques. Computer simulation are presented to investigate the salient features of the proposed TJTC technique with noise-free as well as noisy input scenes. The text was submitted by the authors in English.     

A fast digital Radon transform—An efficient means for evaluating the Hough transform

A fast digital Radon transform based on recursively defined digital straight lines is described, which has the sequential complexity of N² log N additions for an N × N image. This transform can be used to evaluate the Hough transform to detect straight lines in a digital image. Whilst a parallel implementation of the Hough transform algorithm is difficult because of global memory access requirements, the fast digital Radon transform is vectorizable and therefore well suited for parallel computation. The structure of the fast algorithm is shown to be quite similar to the FFT algorithm for decimation in frequency. It is demonstrated that even for sequential computation the fast Radon transform is an attractive alternative to the classical Hough transform algorithm.     

数字图像纯位相编码分析

研究了图像傅立叶变换过程中的振幅与位相问题，突出了位相在整个变换中的重要性，并利用双位相函数对图像进行加密编码和解码，计算机模拟表明双位相编码和解码能有效的抑制附加噪声。     

Argon I Lines Produced in a Hollow Cathode Source, 332 nm to 5865 nm

We report precision measurements by Fourier transform spectroscopy of the vacuum wavenumber, line width, and relative signal strength of 928 lines in the Ar I spectrum. Wavelength in air and classification of the transition are supplied for each line. A comparison of our results with other precision measurements illustrates the sensitivity of Ar I wavelengths to conditions in the light source.     

Dual reaction capacity of hydrogenated nanodiamond

High temperature hydrogen stream treatment of nanodiamond was shown to produce nanodiamond with bifunctional surface. OH- and different CH-groups were shown to be the main functional groups on the surface. In this article we proposed two main strategies for further chemical modification of hydrogenated nanodiamond. OH-groups were shown to react with different types of acylating agents: anhydrides and chloranhydrides. Chlorination of hydrogenated nanodiamond with molecular chlorine and its subsequent treatment with alkyllithium reagents resulted in formation of alkyl-nanodiamonds. Chlorination was shown to reduce the size of nanodiamonds aggregates. We have also applied suspension-state NMR-H1 spectroscopy to study suspensions of alkyl-nanodiamonds for the first time.