柴油发动机正时齿轮剃齿氮化加工工艺研究

在分析正时齿轮工件条件和使用性能的基础上，对采用剃齿氮化工艺加工正时齿轮进行了研究。选择了合适的材质，拟定了工艺流程，确定了各工序工艺参数，所加工的正时齿轮达到了正时齿轮的质量标准和使用要求，并对剃齿氮化和渗碳磨齿两种工艺进行了比较。     

分布式技术在教材管理系统中的应用

本介绍了多层分布式结构的特点及采用分布式技术开发的高校教材管理系统。     

浅谈多媒体教学在大学英语教改中之利弊

文章结合西方现代外语教学理念与大学英语教改指导思想,阐述了多媒体辅助教学在大学英语教改中之利弊.     

线性代数教学中加强几何直观教学的意义

讨论了在线性代数教学中加强几何直观教学的重要性,指出,线性代数的概念引入、定理的几何意义说明、定理应用等几个方面均可以给出几何意义的阐述;由此可以激发学生学习线性代数的兴趣,培养学生应用线性代数知识的能力。     

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.     

人性的一面——自私个性的剖析——《呼啸山庄》主题新探

运用弗洛依德的精神分析理论 ,从人性的一面———自私个性的角度出发 ,剖析主人公希克厉和凯瑟琳的自私性格 ,对《呼啸山庄》的主题提出一些不同以往的看法     

民办高等教育研究综述

随着市场经济的发展和我国办学体制改革的深入,我国民办高等教育开始孕育、诞生和茁壮成长.20年来民办高等教育的发展,为社会的稳步发展进步、经济的迅速发展和国民素质的不断提高发挥了不可估量的推动作用.     

高校学术创新团队建设应注意的问题

高校科技要出更多的原创性科研成果，就必须抓住机遇，建设强有力的学术创新团队。因此，目前学术创新团队的建设已成为高校十分重要的任务和目标。处理好学术创新团队的定位、人员组成、团队文化等问题是学术创新团队建设成功的关键。     

Teaching Fourth-Grade Students of Different Reading Abilities to Read Biological Illustrations and Integrate In-Text Information: an Empirical Experiment

Research in Science Education - Scientific texts are often multimodal, consisting of both text and illustrations. However, previous research indicates that young readers are poor at using...