废水处理中单宁、木素类物质降解规律

＠张朝升＠张可方￥华南建设学院＠赵哲￥黑龙江省环保科研所亚麻沤制废水属于高浓度有机废水，ＣＯＤ约４０００～１００００ｍｇ／Ｌ，ＢＯＤ５约２０００～６０００ｍｇ／Ｌ，木质素约１３０～２６０ｍｇ／Ｌ，其来源主要是沤麻过程中产生的。沤麻废水水温在３２℃左右，而厌...     

YORK冷水机建模与能耗分析

本文以冷源系统为出发点,采用改变冷却水进水温度的方法来优化冷水机的性能。分别从机理模型和系统辨识模型两方面建立了YORK冷水机的装置模型和能耗模型。在此基础上分析了影响冷水机能耗的参数,得到冷却水进水温度与冷水机能耗的关系曲线。     

Quantitative similarity assessment of non-linear chemical fingerprint of traditional Chinese medicine by similarity system theory

The similarities of the non-linear chemical (NLC) fingerprints of Radix Glycyrrhizaes from four producing areas and eight other traditional Chinese medicines (TCMs) were calculated, using a systemic similarity calculation method proposed and three other main calculation ones (Euclidean distance, correlation coefficient and included angle cosine). All of the correlation coefficient similarities of different TCMs are higher than 0.952, and the included angle cosines are all higher than 0.962. So, both the correlation coefficient and included angle cosine similarities are unable to be used as the criteria for quantitatively evaluating the similarities of NLC fingerprints of TCMs. Although all of the Euclidean distance similarities of Berry Liquorices from four producing areas are less than 73, those of the other eight TCMs are all more than 180. The Euclidean distance cannot reflect the relative magnitudes of the feature differences in the NLC fingerprints very correctly. The systemic similarity method is the best among the four ones. All of the systemic similarities of Berry Liquorices from the four producing areas are higher than 0.962, while those of the other eight TCMs are all lower than 0.805, and the systemic similarity can reflect the differences between samples most faithfully, and can be used as a quantitative one evaluating the similarities of NLC fingerprints of TCMs, by which TCM could be distinguished and evaluated quickly, simply and exactly.     

基于区块链的档案数据保护与共享方法

针对现有档案数据管理中普遍存在的数据中心化存储、安全性差和防篡改性弱等问题,提出一种基于区块链的档案数据保护与共享方法：通过智能合约和数字签名技术,实现了数字档案馆的身份认证和档案所有权的确定;通过智能合约和星际文件系统（IPFS）等技术,实现了数字档案的保护、验证、恢复与共享;通过公有链与联盟链结合的方式,在降低经济成本的同时保障了数据的安全性,提高了可扩展性.该方法具有去中心化、安全可信和不可篡改等特点,有望促进档案馆数据存储方式的转型,以满足日益增长的档案数据保护与共享的需求.     

AR沉浸式全景仿真演播室系统

从电视摄像机发明到现在,虽然电视节目的制作有近百年的时间了,但目前投入广播电视使用的系统节目制作拍摄环境通常分为两种模式,一种是传统实景搭建模式,简称实景系统,如图1.     

如何在三种典型的数据中心网络拓扑架构中进行取舍

本文通过介绍数据中心的相关概念,分析了三种数据中心网络架构,展示了基于这些网络构架的数据中心在数据吞吐和计算性能方面的优劣。     

2014年建筑节能和智慧城市建设部分热点

展望未来，建筑智能化领域热点继续是绿色节能和智慧城市。     

网络电压对冶炼行业能耗的影响

根据我厂一条10kV末端线路供给一座1800kVA矿热炉,在正常冶炼中,单耗明显偏高,经调查分析,证实单耗偏高的原因与网络电压高低变化有关,采取改进措施后,电耗显著下降.