单片机在弯管自动化生产线中的应用

本文重点介绍弯管自动化生产线单片机自动控制系统组成及软件实现方法。     

The Edge-pancyclicity of Generalized Hypercubes

Generalized hypercubes （denoted by Q（d1,d2,... ,dn）） is an important network topology for parallel processing computer systems. Some methods of forming big cycle from small cycles and links have been developed. Basing on which, we has proved that in generalized hypercubes, every edge can be contained on a cycle of every length from 3 to IV（G）I inclusive and all kinds of length cycles have been constructed. The edgepanciclieity and node-pancilicity of generalized hypercubes can be applied in the topology design of computer networks to improve the network performance.     

杂多钨酸盐K_n[MW_(11)O_(39)Ni(H_2O)]·xH_2O的氧化还原性质研究

通过极谱和循环伏安法,结合紫外光谱和X射线光电子能谱研究了过渡元素K（?）〔MW_(11)O_(39)Ni(H_2O)〕·xH_2O(M=Si、Ti、Ga、Zr)在溶液中的氧化还原性质,提出了它们的还原机理,杂多阴离子的极谱半波电位顺序为Zr>Ti>Ga>Si,发现杂多阴离子的E_(1/2)与M元素的电负性有线性关系.     

抗氧化石墨材料的实验研究

用一种新工艺——泥浆凝胶工艺制备了石墨材料抗氧化梯度膜，通过初级泥浆涂层和合理的实验参数控制，生成了致密的ＳｉＣ涂层。通过Ｘ射线衍射对涂层进行晶相分析，用扫描电镜分析涂层的成分，证实涂层中ＳｉＣ浓度呈梯度分布，因而缓和了涂层与基体间的热应力。氧化实验表明样品在１０００℃下氧化３００ｈ、１４００℃２００ｈ以及１６００℃、２０ｈ样品质量没有任何损失。１４００℃下经２０个热循环试验后样品完好无损     

放矿随机过程中散体颗粒移动概率密度方程

通过对放矿随机过程的分析，提出了以布朗运动为理论基础的放矿过程散体颗粒移动的概率密度方程。为真实的模拟放矿随机过程中颗粒的移动奠定了理论基础，同时也为放矿理论研究提出了一条新的思路     

On-line Cutting Quality Recognition in Milling Using a Radical Basis Function Neural Network

Tool wear, chatter vibration, chip breaking and built-up edge are main phenomena to be monitored in modern manufacturing processes, which are considered as important factors to the quality of products.They are closely related to the cutting parameters, which are to be selected in manufacturing process.However, it is very difficult to measure directly the cutting quality based on on-line monitoring.In this study, the relationship between the cutting parameters and cutting quality is analyzed.A Radical Basis Function (RBF) neural network based on-line quality recognition scheme is also presented, which monitors the level of surface roughness.The experimental results reveal that the RBF neural network has a high prediction success rate.     

Harmonic Retrieval Embedded in Hybrid Colored Noise: a Novel Pisarenko Method Based on Cross-high-order Cumulant

Spectral estimation method is an effective method in the case of parameter estimation of sinusoid signal in noises.It always applies cross-spectral estimation theory and high-order self-spectral estimation methods up to now.Yule-Walker equation based on cross-fourth-order cumulant is developed and Pisarenko method is provided in this paper.Simulation results show that the method is effective to retrieve sinusoid signal frequencies from hybrid colored noises and has good performance.     

青海粮油及园艺作物主要病虫害发生现状与治理对策

对我省粮油和园艺作物的病虫害发生现状进行了分析，提出了防治建议和对策。     

加强高校道德教育之浅见

道德教育是我国高校德育的重要组成部分。青年大学生的道德素质状况如何,不仅直接决定着社会的形象和民族的精神面貌,还直接关系着建设有中国特色社会主义事业的前途。道德教育历来受到党和国家的高度重视。然而,近年来随着社会上“功利主义”、“利己主义”等思潮的滋生和蔓延,大学生们的良好道德观念受到很大冲击,于是,他们为道德而困惑和迷惘。由此作者认为,进一步加强对大学生的道德教育刻不容缓。     

Cloning of aminopeptidase N promoter and its activity in hematopoietic cell and different tumor cell lines

Aminopeptidase N (APN) promoter region was cloned and sequenced from peripheral blood mononuclear cells. The recombinant reporter construct containing the promoter and luciferase gene, designated pXP1-APNLuc, was introduced into myeloblastic cell line, T lymphocyte cell line and various tumor cell lines. Luciferase assay showed that APN upstream promoter is myeloid-specific for high expression in myeloblastic cell line and much lower expression in T lymphocyte cell line. The promoter activity was relatively high in lung adenoma cell line compared with other tumor cell lines including hepatoma cell line, tong cancer cell line and esophageal cancer cell line in which the promoter activity significantly diminished or was almost undetectable. The characteristics of APN promoter may provide a new strategy for specific myeloprotection while tumor patients are being treated with chemotherapy and/or radiotherapy.