重介洗煤密度自控系统研究

目的：本文介绍了PLC在洗煤厂的介质密度控制中的应用,针对介质密度变化规律性不强,大滞后等特点作出调整。方法：采用VB编程语言结合专家算法的方针,提出了一个解决方案,提高了控制密度精度。结果：使物料浓度配比更加合理,趋势变化更容易让现场人员接受。结论：提高了产煤精度及生产效率,节约了能源的同时为洗煤厂创造更大的经济回报。     

PTA尾气吸附系统的优化

针对吸附系统内除湿剂硅胶频繁破碎现象进行优化。在找出硅胶破碎原因的基础上,通过吸附塔直径放大18.3%,引出部分尾气,使床层流速降低。在吸附塔进口管处,安装雾沫分离器;在硅胶前沿填充部分耐水硅胶以减少液态水的冲击。再生蒸汽加热管上加调节阀防止硅胶过分干燥。使A塔硅胶使用了540d,B塔硅胶使用了630d。     

铝箔纸胶粘剂的制备

由醋酸乙烯和丙烯酸酯所制得的共聚物，能够极大地提高乳液对铝箔和纸张之间的粘合力，通过调整保护胶体聚乙烯醇的用量和增塑剂邻苯二甲酸二丁酯在反应过程中的不同加入方式，可以控制和生产所需要的乳液粘度，流平剂的加入，则改良了乳液在铝箔上胶时的流平性。     

Possible Energy Network with polygeneration system and CCS for China

On basis of adopting polygeneration systems for power and alternative fuels,capturing CO2 with near zero energy penalties,and storing CO2 on sites,a new kind of Energy Network can integrate energy utilization,CO2 capture,transportation and storage synthetically.Techno-economic analysis of this solution focusing on Inner Mongolia and the Yangtze River Delta districts had been carried with comparison to the chain method for energy utilization and CO2 sequestration.This solution can save 21.5% of energy,and re...     

略论英语学习环境的构建

从自主学习理论出发,结合当前高职院校学生的英语学习现状,论述了高职学生英语自主学习中的学习环境的构建。通过构建良好的师生关系、轻松的课堂氛围、与同伴的多种协作关系、丰富的课外活动来促进学生的英语自主学习能力,为学生创造良好的英语学习环境。     

建设工程项目绿色采购供应商的选择研究

针对我国目前建设工程项目绿色采购的理论研究难以满足绿色采购的实践需求的现状,基于建设工程项目绿色采购的特点和供应商信息的灰色特征,将建设工程项目绿色采购供应商选择的信息指标在分成绿色产品、绿色关系和绿色企业的基础上构建具体的可操作性指标,运用灰色关联度模型进行供应商的选择,以推动建设工程项目绿色采购的发展.     

A power-aware code-compression design for RISC/VLIW architecture

We studied the architecture of embedded computing systems from the viewpoint of power consumption in memory systems and used a selective-code-compression (SCC) approach to realize our design.Based on t...     

一款新型太阳辐射测量仪的结构设计与热仿真

近年来由于人类生产活动日益加剧,引起的大气气溶胶和臭氧等大气粒子含量的变化对全球气候变化有着重要影响.为了监测上述大气粒子含量,在总结国内外研究现状的基础上,提出使用合理的温控结构来设计制造一款新型多波段太阳辐射测量仪,用来适应国内纬度跨越大、温差大的工作环境.新型太阳辐射测量仪涵盖可见-红外波段,采用九个带通滤光片分别对应两个光电探测器的结构,可以避免探测器相互定标引起的定标误差并减少定标工作量.经ANSYS Workbench热-力耦合仿真,上述太阳辐射测量仪所采用的温控结构在两个极端温度条件下的变形量满足设计要求.     

Design of the low power wake-up receiver for internet of things communication

A wake-up receiver with high energy efficiency and low power consumption is proposed for solving the power consuming problems of wireless nodes communication in the Internet of Things. The proposed wake-up receiver based on the wake-up mechanism can effectively schedule the network nodes communication, and use the simple envelope detection structure to achieve frequency down-conversion, which can flexibly manage energy and reduce power consumption. Based on UMC 65nm CMOS process technology, the wake-up receiver is designed and simulated. The results show that it can achieve S₁₁ of -21dBm and a sensitivity of -75dBm at a data rate of 1Mb/s, when operating at the central frequency of 780MHz and input signal adopting an on-off keying (OOK) modulation, and the power consumption is 82μW at 1.2V voltage supply.