化学反应的△H与化学反应的可能性     

侯汉娜 《培训与研究》1995,(4)

本文根据热力学原理分析了由化学反应的△H判断化学反应方向的条件.找出了由化学反应式估计△S的符号的一般规律.从热力学和动力学的角度分析了△H与化学反应速度率的关系,以及△H与温度对化学反应限度的影响.  相似文献   

大学新区图书馆馆舍建设的思考   总被引：1，自引：0，他引：1  

王华东 《涪陵师范学院学报》2004,20(6):127-128

随着时代的发展，现代图书馆的建设应更多的注重其科学性、经济性、实用性和舒适性，充分体现以人为本，以读为中心的思想，高度重视节能与环保问题。  相似文献   

对机械能守恒定律条件的认识     

龚劲涛  吴英 《绵阳师范学院学报》2006,25(5):30-32

机械能守恒是力学中的一个重要定律,但关于守恒条件的阐述不同的编者著述却各不相同,那么他们的著述是否等效?本文从保守力、外力做功及参考系三个角度阐述了机械能守恒定律的条件,以期对理解和应用机械能守恒定律有一个全面而清楚的认识。  相似文献   

Potential for knowledge in action? An analysis of Korean green energy related K3–12 curriculum and texts     

Douglas R. Gress  Jungyeop Shin 《Environmental Education Research》2017,23(6):874-885

While understanding green energy development and what drives it are important, there is increasing consensus that sustainability transitions concerning usage need to be viewed in terms of the place specific contexts, including education, that critically mold them. In order to support sustainability transitions, information and knowledge building are not enough; knowledge must be turned into action. This research examines the potential efficacy of Korea’s efforts in this regard via an analysis of K3–K12 geography education curriculum and texts vis-à-vis green energy content. There is scant disconnect between the curriculum and the texts analyzed, and, aside from the small shortcomings unearthed, analyses suggest that Korea is cogent of the ability of geography education and education for sustainable development to turn knowledge into action, thereby empowering civil society to drive its green energy transitions going forward.  相似文献   

低热能饼干的研制     

郑琳  吴士云  刘春平 《安徽科技学院学报》2003,17(1):52-54

本文介绍了以面粉为主要原料 ,辅以豆渣纤维、脂肪、蜂蜜、甜蜜素等主要原料制作低热能饼干的生产工艺 ,并对影响饼干品质的主要因素进行了研究 ,得出了低热能饼干的最佳配方为 :豆渣纤维、油脂、甜蜜素、蜂蜜的添加比例分别为 6%、5 %、1 %、5 % ;该饼干具有口感松脆、香甜且低能、高膳食纤维、低脂肪的特点  相似文献   

浅淡有关温度和内能的几个问题     

邹道阶 《湖州师范学院学报》1994,(5)

本文讨论了温度和热量这两个热学中常用的物理量,阐述了两者的关系,并联系热力学第一定律,分析了与之相关的内能、功和热量等概念,对功和热量的异同之处提出若干看法。  相似文献   

Dynamic modelling and robust current control of wind-turbine driven DFIG during external AC voltage dip     

HU Jia-bing HE Yi-kang 《浙江大学学报(A卷英文版)》2006,7(10):1757-1764

INTRODUCTION Due to concerns about emissions from fossil fuels and the depletion of fossil fuel resources, re- newable energy systems are becoming a topic of great interest and investment in the world. In particular, wind energy has been the subject of much recent research and development. In order to overcome the problems associated with fixed-speed wind-turbine system and to maximize the wind energy capture, many new wind farms will employ wind turbines based on Doubly-Fed Induction Ge…  相似文献   

室内风速模拟的一种数值方法     

李丹娜  楚峥  姚兴佳 《大连大学学报》2006,27(2):27-30

在风力发电技术的研究中,进行室内试验是最有效率的方法,这样就必须模拟实际风场的风,而自然风具有不确定性,难于精准的构造模型.运用非平稳随机过程的方法,建立基于观测数据的非平稳随机过程的数学模型,运用这个模型和康平风场实际观测数据,进行了风速样本模拟.结果表明,采用本方法只需利用少量的风速观测数据就可以很好的模拟自然风.  相似文献   

煤岩冲击倾向性试验及分析   总被引：1，自引：0，他引：1  

陈绍杰  杨永杰  郭惟嘉 《实验室研究与探索》2007,(11)

利用MTS的特点和优势,对山东某矿现采煤层进行了煤岩冲击倾向性试验研究,通过对冲击能量指数、弹性能量指数和动态破坏时间三个煤层冲击能量指标的试验和分析,得出煤层具有较弱的冲击倾向;结合实际采矿条件,应加强冲击地压的预测预报,以保证矿井的安全生产。  相似文献   

Verbal energy: attending to poetry   总被引：1，自引：0，他引：1  

John Gordon 《English in Education》2004,38(1):92-103

This paper contends that the current English curriculum does not adequately acknowledge the potential of poetry to make meaning through sound. It reflects on how sound may embody or communicate meaning, and seeks enhanced conceptions of this aspect of poetry for pedagogy and the curriculum. It begins with the attention the mainstream press gave to Seamus Heaney's remarks about Eminem, and progresses to consider Heaney's notion of ‘verbal energy’ in the light of developing conceptions of multimodal ‘new literacies’. It suggests that new approaches could accord with an oral heritage approach to poetry while also acknowledging the influence of the communicational environments pupils experience beyond English classrooms. Throughout, the author draws on material that has informed his on‐going Teacher Training Agency‐sponsored project exploring the ways in which pupils approach poetry as sound, soon to be detailed on web resources for the English teaching community.  相似文献