浅圆仓侧压力分析

Rankine理论和Coulomb理论均不适合用于浅圆仓的侧压力计算. 基于此, 本文研究了浅圆仓散料侧压力的实际分布规律及计算方法. 根据极限平衡理论, 首先得到散粒体作用在单位周长的仓壁上的合压力, 然后通过严格的数学推导, 得到浅圆仓侧压力的分布规律. 结果表明, 本文结果与实仓试验结果相符, 说明本文公式不论对平堆还是锥堆都比较适合, 而Rankine理论和Coulomb理论用于浅圆仓均有缺陷.     

教学仪器订购系统设计

介绍了一种为中小学校进行教学仪器、器材、设备的订购、配备及管理的计算机管理软件系统，对其主要功能、数据库表、操作性能、用户界面、编程方法等作了扼要说明。     

俄罗斯中等职业教育的现状及发展趋势

俄罗斯中等职业教育是国家教育体系中一个重要的组成部分。中等专业学校是国家经济发展中普通技术人才的主要培养基地，20世纪90年代，中等职业教育经历了重大变革，近些年来有了稳步的发展。分析、研究俄罗斯中等职业教育的现状，并在此基础上预测俄罗斯中等职业教育的发展趋势，对我国中等职业教育的发展将有一定的启示和借鉴。     

Numerical investigation of cavitating flow behind the cone of a poppet valve in water hydraulic system

Computational Fluid Dynamics (CFD) simulations of cavitating flow through water hydraulic poppet valves were performed using advanced RNGk-epsilon turbulence model. The flow was turbulent, incompressible and unsteady, for Reynolds numbers greater than 43000. The working fluid was water, and the structure of the valve was simplified as a two dimensional axisymmetric geometrical model. Flow field visualization was numerically achieved. The effects of inlet velocity, outlet pressure, opening size as well as poppet angle on cavitation intensity in the poppet valve were numerically investigated. Experimental flow visualization was conducted to capture cavitation images near the orifice in the poppet valve with 30° poppet angle using high speed video camera. The binary cavitating flow field distribution obtained from digital processing of the original cavitation image showed a good agreement with the numerical result. Project supported by the National Natural Science Foundation of China (No. 59835160) and Scientific Research Foundation for Returned Overseas Chinese Scholars, State Education Ministry of China (No. 50175097)     

基于供需平衡理论对辽宁本科英语翻译专业发展问题的必要性研究

本论文围绕基于供需平衡视角下的辽宁高校英语翻译专业发展现状和提升路径两部分展开。本论文拟从教育学、社会学和管理学的视角审视目前辽宁高校英语翻译专业存在的问题。本研究主要是在借鉴教育经济学中人才供需理论的基础上,深入挖掘辽宁高校英语翻译专业自身的特点与性质以及市场供需之间的关系,以供需平衡的视角应对目前英语翻译专业发展的困境,进而找到优化学科发展,提升学生就业能力的路径。     

教学投影机亮度变暗的解决方案

对投影机亮度变暗的原因与维修、维护的范围及效果进行了分析，提出了维护、维修的方案及成本预测。     

做专家型的员工

每到年终的时候，当老板的总是要给优秀员工发一个大大的红包，这时做老板的常常会有类似的感慨：要是企业里的员工都能像小王一样，该多好啊，我们企业将会有多大的发展啊。而业绩落在小王后面的小李小赵也会在心里暗自思忖：我什么时候也能做到他那么好的表现呢?     

Clinical detection and movement recognition of neuro signals

INTRODUCTION Human limbs are complex, delicate systems.Their reconstruction, both for appearance and forfunction compensations, proves to be complicatedprojects. With the development of science and tech-nology, both researchers and disabilities hope to haveartificial limb much more perky, comfortable, dex-terous and effective. Although thousands of pros-thetic limbs are commercially available worldwide,most of them, from mechanical styles to electricstyles, from motion controlled t…     

Tandem Biocatalysis by CotA-TJ102@UIO-66-NH2 and Novozym 435 for Highly Selective Transformation of HMF into FDCA

2,5-Furandicarboxylic acid(FDCA) is a potential biorenewable chemical for applications including plastics, polyamides, drugs, etc. The selective biosynthesis of FDCA from 5-hydroxymethylfurfural(HMF) by a specific enzyme poses a great challenge. In this study, we reported an efficient strategy to produce FDCA from HMF by the tandem biocatalysis of laccase(Cot A-TJ102@UIO-66-NH_2) and Novozym 435. For the first step, a nanoparticle metal–organic framework was synthesized as a carrier to immobilize Cot A-TJ102@UIO-66-NH_2, which was assigned for the production of 5-formyl-2-furancarboxylic acid(FFCA) and featured an enzyme loading of 255.54 mg/g, specific activity of 135.90 U/mg, and solid loading ratio of 99.65%. Under optimal conditions, an ideal FFCA yield of 98.5% was achieved, and the Cot A-TJ102@UIO-66-NH_2 presented a high recycling capacity after 10 cycles. For the second step, Novozym 435 was applied for the further conversion of FFCA into FDCA, presenting a high FDCA yield of 95.5% under the optimized conditions. Novozym 435 also exhibited a high recyclability after eight cycles. As a result, the tandem biocatalysis strategy provided a 94.2% FDCA yield from HMF, indicating its excellence as a method for FDCA production.     

论邓小平关于实践主体的思想

邓小平同志实践主体的思想强调了实践主体人的“现代化”，强调了改革开放实践中，“人民群众是社会历史活动主人”的观点，强调了改革开放实践目的的“人民性”－以“是否有利于提高人民生活水平”作为判定改革开放的一个重要标准。