耐热木聚糖酶源细菌筛选、鉴定及酶学性质

利用木聚糖作为唯一碳源的基础盐培养,在50℃培养条件下,从新乡周围土样及腐殖质中筛选到1株产耐热β-木聚糖酶细菌,初步鉴定为巨大芽孢杆菌（Bacillus megaterium FLH-2）.该菌株在40~55℃生长良好,最适生长温度50℃.木聚糖酶粗酶性质研究表明：该酶最适pH和最适温度分别为6.0和65℃;在pH 5.0~9.0及温度30~75℃之间酶活相对稳定,分别处理30 min,相对酶活仍保持在80%以上.     

CFD simulation of micro-particle trapping under water tweezers

In early research, capture and manipulation of particles were mainly achieved by means of light, electricity and plasma in micro-fabficaton and micro-assembly. A new method is proposed using micro-water jet to form water tweezers to capture solid particles and implement position control of micro-particles. This paper analyzes the basic prin- ciple of water tweezers, and the discrete element method and smoothed particle hydrodynamics method are employed to establish a solid-liquid coupling model used in analyzing the trapping mechanism. A flow field model is set up to simulate dynamic characteristic of water tweezers based on computa- tional fluid dynamics （CFD）. Selection of boundary conditions, initial guess, solver control and convergence strategies of the model are discussed. Velocity and pressure of streamline are predicted and discussed under certain input conditions. Simu- lation results demonstrate that it is an efficiently theoretical method to eventually trap solid particles by water tweezers.     

Fostering Learner Autonomy by Strengthening Learners’ Motivation

This paper aims to discus some practical ways to develop the learners’autonomous English learning abilities.After analyzed the motivation problems,the author strengthened learners’motivation through classroom teaching successfully by building good social relations,promoting negotiation,promoting interaction in the classroom and setting up adequate evaluation systems,etc.The author finds that using the content of regular college classroom teaching as a meaningful context for the development of responsibility can enhance the learning effect.The teacher’s guiding role in autonomous learning should never be ignored.Developing autonomous English learning in vocational colleges in China is our long-term pedagogical goal.     

生命哲学视域下“五育融合”之学理基础与实施路径

当下,作为新时代育人风向标的“五育融合”是教育改革与发展的重大议题之一。但存在的现实困境有：功利主义教育观肢解“五育”完整性;封闭的教育场域压抑“五育”自由性;教育主体的模糊使“五育”承受融合的割裂性。生命哲学作为具有哲学秉性的学理,以其与教育之间的同源构建“五育融合”的路径。基于个体生命样态的憧憬,坚守合理适度的“五育融合”信条,进而重筑生命自由与心灵解放,弥合“五育”起点与其内在精神的异化缺失,最终使“五育”得以落地,让生命得以健康成长。     

解读张爱玲小说语言的音乐美

张爱玲在其小说中利用音乐的灵动性和丰富性来营造小说的意境,产生了意想不到的效果.为达到这种音乐化的效果,她使用了大量的叠音词、摹声词以及顶真、反复、排比等多种辞格,并且巧妙利用标点的节奏性,使得小说中的语言富有灵动的音乐感,从音乐艺术的审美视角让其小说中的文学语言显得更具主题内蕴以及美学价值.     

大学英语分课型教学与评价体系探索——以南昌工程学院为例

根据应用型本科人才培养的目标,依据学生成长和社会发展的需要,提出了实施大学英语基础阶段分《大学英语读写译》和《大学英语视听说》两门课,提高阶段实施ESP相关课程的具体运作模式,并提出了相应的教学评价体系。     

黔东南少数民族村寨旅游产业集群生态化发展初探——以西江苗寨为例

旅游业作为新兴的综合性产业,为少数民族村寨的发展发挥了不可替代的作用。民族村寨旅游必须走产业集群生态化发展道路,才能推进民族村寨旅游产业的可持续发展。以西江千户苗寨为例,在分析黔东南少数民族村寨旅游产业发展的现状的基础上,提出黔东南少数民族村寨产业集群生态化发展的对策建议。     

基于DASP软件新风换气机的试验模态分析

研究了新风换气机的动态特性,以改善新风设备工作时的振动噪声,对XHBX-D2TH型号的新风换气机进行了试验模态研究,得到了新风机结构的8阶模态固有频率、阻尼比和模态振型等参数,为进行有限元模态仿真分析,振动、噪声分析与结构优化创造了条件.     

岩体工程力学课程教学改革的探讨

以采矿工程专业开设的岩体工程力学课程为例,根据采矿工程专业培养目标及课程教学现状,总结了目前课程教学中普遍存在的几个突出问题;结合课程教学工作,探讨了相应的教学改革措施。