改善肉类干燥窑热流场的一种计算方法

针对流场改善类问题如何进行数值模拟计算分析,以一肉类干燥窑热流场分析问题为例,利用计算流体力学(CFD)方法并考虑干燥窑不同设置方案,通过求解不同的设置方案条件下干燥窑流场的Navier-Stokes方程来分析原设计方案和改善方案中流场的分布和特点.数值计算的结果表明:所用的数值计算方法是可行的,基本符合实际情况;所得计算结果分析图像对了解干燥窑中流场的分布情况和如何改善干燥窑流场分布具有积极的参考意义.所提出的方法为采用数值计算方法分析改善干燥窑流场问题提供了一种可行的手段.这一数值计算方法较之传统的实验和经验方法提高了分析效率、降低了成本,是一种值得重视和发展的数值计算方法.     

以科学发展观统领区域高校工作全局

坚持用科学发展观统领区域高校工作全局,要全面正确地把握科学发展观的第一要义、核心内涵、基本要求、实现途径和根本方法,紧紧围绕发展这一主题,坚持做到两个为本,牢固树立三个观点,切实做到四个着力,辩证处理十大关系,不断增强贯彻落实科学发展观的自觉性和坚定性.     

健胃胶囊的药效学研究

目的:探讨健胃胶囊对试验动物幽门结扎型溃疡、胃肠排空及镇痛的作用机理,为临床应用提供依据.方法:采用适当剂量灌胃给药的方法,随机分成4组(高剂量组、低剂量组、阳性对照组、阴性对照组),观察健胃胶囊对大鼠幽门结扎型溃疡面的抑制率、对小鼠胃体内甲基橙残留量的影响与给予刺激剂15min内各组小鼠发生扭体反应次数.结果:健胃胶囊有明显抑制大鼠胃部幽门结扎型溃疡面、增加小鼠胃体甲基橙残留量、减少小鼠对刺激剂发生扭体反应次数.结论:健胃胶囊具有防止幽门结扎所致胃溃疡的发生、调节胃肠蠕动功能以及明显镇痛作用.     

Design of the signal processor for an ionospheric sounding system

On the basis of the analysis of the system sounding principle, this paper introduced a new type of ionospheric oblique backscattering sound system, which is based on the pseudo- random noise phase modulated pulse compression. According to the high requirements of real-time and a large amount of computation and echo characteristics, a high-speed real-time signal processing system was established and the design of system hardware and software was focused on. The sounding results indicate that the system is equipped to handle the data fast and has a high degree of software features. It is of great significance for the realization of fast, real-time ionospheric sounding means.      

Comparison study of chitosan/β-cyclodextrin and carboxymethyl chitosan/β-cyclodextrin microspheres

To compare two microspheres of chitosan/β-cyclodextrin and carboxymethyl chitosan/β-cyclodextrin loaded theophylline as pulmonary sustained drug delivery carriers, the characteristics and ciliotoxicity were studied. The drug loadings of chitosan/β-cyclodextrin and carboxymethyl chitosan/β-cyclodextrin microspheres were 21.09% and 21.42%, and the encapsulation efficiencies were 91.40% and 92.80%. The distributions of 50% (d _0.5) of chitosan/β-cyclodextrin and carboxymethyl chitosan/β-cyclodextrin microspheres were 4.89 and 5.83 μm, respectively. Both microspheres showed spherical shape with smooth or wrinkled surfaces. FT-IR of chitosan/β-cyclodextrin microspheres demonstrated that theophylline had formed hydrogen bonds with chitosan and β-cyclodextrin, while for the carboxymethyl chitosan/β-cyclodextrin microspheres theophylline had interaction with carboxymethyl chitosan. The moisture absorption showed that an equilibrium was reached within 24 h. The two microspheres possessed better adaptability. In vitro release of theophylline from chitosan/β-cyclodextrin microspheres was slower than that from carboxymethyl chitosan/β-cyclodextrin microspheres at pH 6.8. Biography: LI Ruobao(1968–), male, Associate professor, research direction: foundation research of respiratory system.     

论中语新课改背景下高校语言学概论课程的改革

中学语文新一轮课程改革标准颁布后对高校汉语言文学类课程体系建设产生了巨大的冲击,传统的人才培养模式已经难以适应新课程模式下学生群体的需求,其中语言学概论课程弊端重重,本文特别针对新课改背景下学生群体的特点来重新审视高校语言学概论课程的建设问题.     

就业导向下高校新闻传播学实践教学的思考

根据当前就业形势对以实践性、应用性为主要特色的新闻传播学专业人才的要求,在分析高校专业实践教学存在的问题的基础上,提出高校新闻传播学专业实践教学应加强新闻传播学专业实践教学的规划,创新实践教学的模式,完善专业实践教学基地的建设。     

海子抒情诗中“秋”意象解析

海子诗歌意象丰富,意蕴深厚,极具艺术张力,例如“秋”意象。本文从三方面论述海子抒情诗中“秋”意象。首先,“秋”象征丰收而荒凉的人世;其次,论述“秋”的感伤;最后,“秋”是幻象丛生的国度。     

教育资源价值补偿视角下的高校预算改革

教育资源价值补偿问题的提出,为高校预算改革提供了新的视角。面向绩效的高校预算管理模式能有效地提高高等教育办学效益,也是实现教育资源价值补偿的制度保障。     

浅谈清华校史工作中口述史的开展

口述史在推动清华大学校史研究方面起到了积极作用.清华大学校史工作者50年代末即已开始了对校友的访谈,数十年来一直重视并有计划地开展此项工作.文章旨在总结清华校史工作者数十年来的采访实践成果,成果的运用,以及逐渐摸索出的一些规律和发现的一些问题.