基于智能汽车竞赛探索创新人才培养模式

智能汽车竞赛作为一项多学科交叉的竞赛正在成为高等院校对大学生进行创新能力培养的重要平台。结合黑龙江科技大学实际情况,基于智能汽车竞赛,探索以竞赛教学平台、竞赛人才梯队平台、竞赛实践拓展平台为体系的人才培养模式,进而培养大学生对知识的综合运用能力、解决问题的实践能力,提升学生的创新能力。     

预分散和预混合橡胶助剂的概况

简述预分散和预混合橡胶助剂产品开发的目的,介绍硫黄、氧化锌、促进剂、防老剂等预分散和预混合橡胶助剂产品以及芳纶浆粕、橡胶／纳米黏土复合材料、白炭黑／炭黑母胶等预分散橡胶助剂母胶产品的发展概况。     

Investigation of High Catalyteal Durability for Porous Pt Films Deposited via Magnetron Sputtering

Porous Pt thin films were prepared on carbon papers by a single-step ultra-high dc magnetron sputtering method to obtain ideal electrodes for proton exchange membrane fuel cells.The platinum loading of the electrocatalyst layer is controlled at about 0.1 mg·cm^-2.Structural characteristics and catalytic activities of the films were analyzed by scanning electron microscopy,atomic force microscopy,X-ray diffraction,cyclic voltammetry,and stress durability testing methods.The effect of tr...     

数字电视地面广播初探

本文通过对美国HARRIS公司和意大利ITELCO公司生产的符合DVB标准的数字电视发射机激励器的内部结构和工作原理的分析，给出当前数字电视发射机激励器的一般组成结构和原理。     

关于“强县扩权”下加强中小型水利工程建设管理的几点思考

当前，为了应对国际金融危机，党中央和国务院决定2010年底前投资4万亿元拉动内需，以确保我国经济平稳过渡。根据最新公布的数据显示，4万亿元投资中有9％将用于农村民生工程建设，为中小型水利工程建设带来了契机。     

泄压取压丝堵的研制应用及效果

井口的套管阀门和测试阀门经常由于关不严发生渗漏,给水井的安全生产带来很大隐患,也给井口的标准化管理带来很大的工作量,增加成本的投入。泄压取压丝堵可以有效地封堵渗漏,降低成本的投入,同时丝堵可以泄压、录取压力。经21口井7个月的现场使用,达到了预期的效果,为今后的堵漏、取压工作又增加了一种新方法,值得推广。     

基于特征的夹具设计信息模型及其应用研究

文章对夹具设计智能化和自动化系统相关技术的研究进行了简要总结.针对目前夹具CAD技术的研究和应用中存在的不足,对夹具设计随工件的结构特性、工艺规程中工序的集中与分散、工艺装备水平、加工精度、生产纲领等因素变化的特点进行了阐述.对面向夹具设计的特征识别技术进行了研究,指出基于特征的夹具设计涉及工件工艺特征模型、机床、夹具案例、夹具零部件及刀具、量具等的特识信息.对基于特征的夹具设计过程涉及的定位方案、夹紧方案、导向和对刀方案、夹具与机床的安装联接等进行了阐述.     

汽车车身,车门装配误差检测的软件和硬件评价手段

对轿车装配质量的关键技术—轿车车门、车身的装配误差技术的检测,进行了从理论到实践的研究和验证。给出了检测的流程图和相应的电路图。实践证明,该方法具有很强的理论指导作用和实践意义。     

Luminescent properties of Eu（OA）3（TTA）/NBR composites prepared by in-situ reaction

Eu(OA)3(TTA) (OA=cis-9-octadecenoic acid, TTA=4,4,4-trifluoro-1-(2-thienyl)-1,3-butanedione) complexes (Eu- complexes) containing the ligand OA with long molecular chains were synthesized. The Eu(OA)3(TTA) complexes and peroxide were added into nitrile-butadiene rubber (NBR) by mechanical shearing to get the uncured composites. The cured composites were obtained by vulcanizing the uncured composites at high temperature. The in-situ reaction including polymerization and grafting of Eu-complex took place at the curing process, which was verified by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) observations showed the fine dispersion of Eu(OA)3(TTA) complex (Eu-complex) in the cured composites compared with the uncured ones. Fluorescent spectra and Judd-Ofelt parameters analysis revealed that the fluorescent intensity increased approximate linearly with the content of Eu- complex increasing due to the in-situ reaction and long molecular chains of OA. The fluorescent lifetime of composites was longer than that of original Eu-complexes.