硝酸钐和冠醚B15C5在丙酮中的配合行为

为了探索稀土盐与冠醚在有机溶剂中的配合行为,利用半微量相平衡法对Sm(NO_2)_3·3H_2O-Bl5C5-CH_3COCH_3三元系的溶度(291K)进行了研究,结果发现仅有一种配合物Sm(NO_3)·Bl5C5·3H_2O·CH_3COCH_3生成。进而制备了固体配合物。利用化学分析,紫外光度分析,红外光谱和热分析研究了它的组成和性质,测得了热分解历程及相应的焓变值。     

Skin Sensitive Difference of Human Body Sections under Clothing — Comparative Judging of Body Sections'''' Cold Sensitivity Sequence

Intheserialreports[1,2]ofskincoldsensitivedifference ofhumanbodysectionsunderclothing,thepatternofskin temperature smaximumchangesanddynamicchanging processonhumanbodysectionsstimulatedbythesame intensivecoldunderclothingisreported.Atthesame time,bodysectionsaffectedbythesamecoldstimulus resultsinwearers psychologicalperceptiondifference,whichcouldberesearchedintheaspectofsenseand consciousness.Traditionally,senseandconsciousnessbelongto psychologycategory.Tostudysenseandconsciousnessrelated t…     

室内热环境评价与测量的新标准化方法

介绍在暖通空调工程中，按照国际标准所要达到的室内舒适热环境的衡量标准及其测量方法。重点介绍满足ＩＳＯ７７３０和ＩＳＯ７７２６两个新标准提出的条件时必须测定的热参数、测定手段及仪表。     

文胸穿着舒适性的影响因素研究

文胸穿着舒适性是女性共同关注的重要问题。从穿着者本身及文胸自身特点出发对影响文胸穿着舒适性的因素进行了调查分析,并着重分析了影响压力舒适性的因素,同时采用穿着试验对影响压力舒适性的部分因素进行了验证。得出:穿着者对文胸的功能及穿着性能的需求影响其穿着舒适性;文胸自身的特点影响其穿着舒适性;压力是影响文胸穿着舒适性的主要方面;影响压力舒适性的因素包括穿着者的穿着习惯、运动情况及文胸的结构、尺寸和面料的弹性。同时,总体压力感和总体不舒适感之间存在正向关系。     

Dimension Analysis of Air Layer Confined Underclothing

This study investigates the influence of air layer confinedunderwear on the heat and mass transfer of body-fabric-environment system. For a simple,a single-layer fabric in cotton is modeled.The study focuses on under-standing the combined effect of convection,radiation and evaporation in thermal comfort condition.Based on the-oretical analysis,both sensible heat flux and latent heat flux have been mathematically modeled and quantified for different thickness of underclothing air layer.Thenumerical results have been compared with experimental     

湿法脱硫在邯郸热电厂中的应用

介绍了邯郸热电厂烟气脱硫装置的系统及脱硫原理,分析了脱硫装置的故障,提出了相应的保护措施。     

Analysis of the Thermohydro - comfort Durability for Microfil - polypropylene Knitted Fabric under Grey System

Thin microfll - polypropylene knitted fabric that is knitted to use new single plated theory on large diameter circular weft knitting machine is a new functional fabric. After military use, the reflective opinions are that it is light, thin, soft, smooth - touch, and it has excellent elasticity, good air perviousness, large water vapor permeability . In this paper, an analysis is held to use grey system theory, and the thermohydro - comfort durability of this microfil - polypropylene knitted fabric is compared with that of common knitted fabrics. The analytical result proves the microfil - polypropylene knitted fabric is satisfactory under the climatic conditions that human body needs to eliminate or retain the quantity of heat. It can be use to seam up not only physical ability training uniform of serviceman but also civil sporty and sportswear et cetera.     

基于新欧洲行驶循环的轮边驱动电动汽车平顺性仿真及优化

针对某型轮边驱动电动汽车,为提高车辆平顺性能,推导其动力学微分方程,在MATLAB/Simulink中建立1/4车辆平顺性仿真模型,在新欧洲行驶循环(new european driving cycle,NEDC)工况下,以车身加速度和车轮动载荷为指标,与吸振式轮边驱动电动汽车对比其平顺性能。针对吸振式轮边驱动电动汽车,以车轮最大振动位移的最小值为目标函数对其悬架与吸振器参数进行优化设计,并进行仿真对比。仿真结果表明,优化后的吸振式轮边驱动电动汽车车身加速度均方根值降低了8. 2%,车轮动载荷均方根值下降了0. 12%,明显改善了车辆平顺性能,对改进轮边驱动电动汽车的行驶平顺性能具有一定的指导意义。     

自然通风模式下开放式办公室内局部热舒适的数值分析

自然通风研究应该重点关注人员活动区域而非建筑整体的热舒适性。为了对采用自然通风的办公室的局部热环境情况进行探究,以某办公大楼为例,通过基于Fluent模拟和实地测试的方法对其采用窗户自动控制系统进行自然通风的开放式办公室的局部热环境情况进行了数值模拟。根据模拟结果,讨论了在不同的室外气象参数条件及其对应的通风控制模式下,室内人员活动区的室内预测平均评价和吹风感两个指标表现情况。结果表明,现有自然通风控制策略的室外温度选取范围偏低,在室外气温较低或强风的情况下,仍存在室内预测平均评价偏低和吹风感强的风险。研究对建筑窗户通风控制系统的优化设计具有重要的参考价值。     

基于改进炕洞构造形式的大花洞火炕热舒适度

为了解决普遍存在的炕面温度极不均匀,热舒适度差的问题。将火炕从进烟口到出烟口的整个炕体作为研究对象,利用VENT技术对大花洞火炕的烟气流场分布、涡流状况进行模拟分析,对其烟道进行优化设计,得出两种优化设计模型,明显改善了现状火炕的烟气流场分布,大幅减少了涡流区面积,使更大范围的烟道炕洞、炕面板能够接触到高温烟气进而吸蓄、存贮、释放烟气热量,大幅提升了火炕热舒适度,也为火炕的优化设计提供了一种新的技术方法。