Energy Efficiency Evaluation of Frozen Food Production Factories

At present, food production factories in our country evaluate energy consumption level by using energy consumption per unit production or energy consumption fees. However, these indices do not reflect the influence of the using level, business level, and the quality level on the enterprise energy efficiency. In this study, energy consumption situation of some food production factories at home and abroad were compared, and the problems caused by the current energy consumption evaluation indices were analyzed. A new energy efficiency evaluation index which can reflect using level, business level, and the quality level was proposed. Then the evaluation of energy efficiency for six representative domestic food production factories was performed with the present index. The result shows that energy efficiency difference among factories is obvious

1984 Vol. 33 No. 3

https://engagedscholarship.csuohio.edu/lawpublications_gavel1980s/1009/thumbnail.jp

A Hybrid Simulated Annealing Algorithm for the Three-Dimensional Packing Problem

提出了一个高效求解三维装箱问题(THrEE dIMEnSIOnAl COnTAInEr lOAdIng PrOblEM 3d-ClP)的混合模拟退火算法.三维装箱问题要求装载给定箱子集合的一个子集到容器中,使得被装载的箱子总体积最大.文中介绍的混合模拟退火算法基于三个重要算法:(1)复合块生成算法,与传统算法不同的是文中提出的复合块不只包含单一种类的箱子,而是可以在一定的限制条件下包含任意种类的箱子.(2)基础启发式算法,该算法基于块装载,可以按照指定装载序列生成放置方案.(3)模拟退火算法,以复合块生成和基础启发式算法为基础,将装载序列作为可行放置方案的编码,在编码空间中采用模拟退火算法进行搜索以寻找问题的近似最优解.文中采用1500个弱异构和强异构的装箱问题数据对算法进行测试.实验结果表明,混合模拟退火算法的填充率超过了目前已知的优秀算法.This paper presents an efficient hybrid simulated annealing algorithm for three dimensional container loading problem (3D-CLP).The 3D-CLP is the problem of loading a subset of a given set of rectangular boxes into a rectangular container so that the stowed volume is maximized.The algorithm introduced in this paper is based on three important algorithms.First,complex block generating,complex block can contain any number boxes of different types,which differs from the traditional algorithm.Second,basic heuristic,which is a new construction heuristic algorithm used to generate a feasible packing solution from a packing sequence.Third,simulated annealing algorithm,based on the complex block and basic heuristic,it encodes a feasible packing solution as a packing sequence,and searches in the encoding space to find an approximated optimal solution.1500 benchmark instances with weakly and strongly heterogeneous boxes are considered in this paper.The computational results show that the volume utilization of hybrid algorithm outperforms current excellent algorithms for the considered problem

A design of high precision and high power electroplating power source

针对传统电镀电源体积大、实现方式复杂以及输出纹波大的特点,提出了一种新型的dC/dC变换器,采用双闭环PWM实时控制方式,具有恒电流和恒电压两种工作方式。用该方法设计了一组9.6 kW电源模块,实验表明,电源输出纹波系数小于1%,效率达到90%。The tradition electroplating power is large and the output ripple is big.This paper provides a circuit scheme that use high-frequency switch power supply.The double close-loop PWM control is adopted in control circuit.The power supply has two kinds of working patter,which are constant current mode and constant voltage mode.A group of 9.6 KW power supply module are designed.According to the experiments,the power output ripple coefficient is less than 1%,and the efficiency is 90%.厦门市科技计划项目(3502Z20123013

利用加设钢支撑改变单跨框架结构体系的抗震加固效果研究

单跨框架结构大量存在于中小学建筑中,中小学建筑已提高到乙类设防,根据抗震鉴定标准GB50023-2009,框架结构不宜为单跨框架;乙类设防时,不应为单跨框架。单跨框架是一种抗震严重不利体系,缺乏冗余约束,易发生整体倒塌。若从构件加固层次提高建筑的抗震性能,不但造价高、施工复杂,而且效果也不明显。加设支撑是一种改变建筑结构体系的方法,本文结合工程实例,讨论了加设钢支撑后原结构性能变化以及加固过程中应该注意的问题。研究表明,利用支撑改变结构受力体系,可以明显改善结构性能,提高抗震能力

基于深度学习的金免疫层析试条定量检测方法

为解决免疫层析试条定量检测问题,搭建了基于深度置信网络和反向传播神经网络构成的深度学习模型。基于免疫层析试条图像的特点,搭建的模型通过学习本文提出的图像灰度特征、距离特征以及差分特征实现准确的图像分割。最后,对分割的图像进行定量分析实现最终的定量检测。实验结果表明,本文提出的方法能够实现免疫层析定量检测。国家自然科学基金(项目编号:61403319);;福建省自然科学基金(项目编号:2015J05131

Studies on Valuable and Rare Chinese Herbs Anoectochilu s roxburghii by DNA Fingerprintings Using RAPD

王其新 男, 1 9 7 3 年毕业于中山大学药用植物学专业。现任湛江市药品检验所中药室主任, 主任中药师。擅长生药学、中药鉴定学和植物化学,连续参加三版中国药典部分药品标准的起草和修订工作, 对草豆范的薄层色谱鉴别进行了系统的研究。所建立的薄层色谱法被中国药典采用。编著著作1 本, 获广东药学院科技进步二等奖1 项, 发表科学论文28 篇, 取得“ 壮骨口服液” 发明专利1 项。为了鉴别金线莲的品种，探索同属植物之间的亲缘关系及同种 植物不同产地的遗传变异，并制定正品金线莲的 DNA 指纹图谱，采用随机扩增多态 DNA(RAPD)技术对兰科开唇兰属植物花叶开唇兰 Anoectochilus roxburghii(Wal-l.).Lindl.、台湾开唇兰 A.formosanus Hay. 进行了鉴定，结果选 择的 7 个引物对 3 个品种 共扩增出 98 个位点，其中 3 个引物为高特异性引物。结论 RAPD 技术不仅能鉴别种间差 异，而且能揭示同种不同产地植物的遗传变异。厦门市卫生局医学科学技术进步基金科研资助项