搜索结果: 1-15 共查到“知识库 VOC”相关记录27条 . 查询时间(0.043 秒)
由SARS-CoV-2病毒引发的新冠肺炎(COVID-19)仍在全球范围大流行。虽然已经有不同类型的疫苗及单克隆抗体(简称“单抗”)上市，但是新冠受关注突变体(Variants of Concern, VOCs)可通过疫苗突破(Vaccine breakthrough)及抗体逃逸等方式感染个体[1]。因此，筛选针对新冠VOCs的广谱（Broadly neutralizing）或全谱(Pan-neu...
Photochemical grid model implementation and application of VOC, NOx, and O3 source apportionment
model implementation application
2015/3/5
. For the purposes of developing optimal emissions
control strategies, efficient approaches are needed to identify the major sources or groups of sources that contribute to
elevated ozone (O3/...
室内装饰装修材料和家具VOC释放标识体系述评
室内空气品质(IAQ) VOC 甲醛 散发 标识 装饰装修材料家具
2013/8/19
室内装饰装修材料和家具释放的挥发性有机化合物(volatile organic compounds, VOC)是造成室内空气品质低劣的主要原因之一. 室内空气品质低劣已造成了严重经济损失, 为改善室内空气品质, 欧美发达国家已建立室内装饰装修材料和家具VOC释放标识体系, 并取得了良好效果. 本文综述了国际上已有标识体系, 介绍了标识基本原理, 并分别对标识体系的技术、政策和操作环节进行了探讨, ...
基于弹光调制的红外光谱吸收法在室内VOC检测中的研究
光谱分析 弹光调制 硒化锌晶体 挥发性有机化合物
2012/4/13
为了保证静态干涉系统在气体定性定量分析方面稳定性高、抗干扰能力强的特点，设计了基于弹光调制实现光程静态扫描的干涉检测系统。系统由红外激光器、起偏器、弹光调制器、检偏器及CCD组成。通过弹光调制器使弹光晶体的主折射率随调制信号周期性的变化，从而产生周期性变化的光程差。通过对调制相位变化的计算，可知得到调制度随晶体长度、调制时间的函数关系。依据相位延迟及干涉图能量分布，推导了对应的干涉光强公式。实验采...
A CFD Simulation Study of VOC and Formaldehyde Indoor Air Pollution Dispersion in an Apartment as Part of an Indoor Pollution Management Plan
CDF Indoor air pollution Numerical modelling Turbulence Indoor source
2016/3/28
This paper is a preliminary report of an indoor pollution case study in a complex of apartments as a part of an Indoor
Pollution Management Plan (IPMP). It describes the calculation by Computational ...
采用H2O2浸渍的修饰方法对ACF进行化学改性,并利用氮吸附等温线和XPS(X-ray photoelectron spectroscopy)的方法对ACF样品进行表征。通过在反应床上开展吸附实验,由此测定改性前后ACF脱除VOC(甲苯作为VOC的代表物)的效果,同时考察氧气、温度、水蒸气等因素对ACF脱除甲苯的影响。研究发现,改性使得ACF样品比表面积和孔容略有降低,但表面含氧官能团含量增加,吸...
Eddy covariance VOC emission and deposition fluxes above grassland using PTR-TOF
VOC grassland PTR-TOF
2011/2/24
Eddy covariance (EC) is the preferable technique for flux measurements since it is the only direct flux determination method. It requires a continuum of high time resolution measurements (e.g. 5–20 Hz...
VOC Outgassing from Baked and Unbaked Ventilation Filters
VOC Outgassing Baked ventilation filters
2016/3/29
Volatile organic compounds (VOC) outgassing from newly manufactured baked and unbaked ventilation filters were
examined using gas chromatography/mass spectrometry following thermodesorption (TD-GC/MS...
VOC measurements within a boreal forest during spring 2005: on the occurrence of elevated monoterpene concentrations during night time intense particle concentration events
VOC measurements boreal forest monoterpene concentrations
2009/11/19
In this study we present measurements of selected trace gases and aerosols made in a boreal forest during the BACCI-QUEST IV intensive field campaign in Hyytiälä, Finland in April 2005. Spri...
烟包VOC过程控制经验点滴
烟包 VOC 过程控制
2009/9/25
在中国经济迅猛发展的今天，包装印刷行业呈现出了绚丽多彩的景象，越来越多包装艺术品在印刷厂生产出来，烟包印刷尤甚。为努力实现香烟产品的品牌化、高档化，中烟公司格外追求外包装效果的艺术性特征。
浅谈烟包VOC的定量分析
烟包VOC 定量
2009/9/24
卷烟作为一种特殊食品，特定的牌号具有独特的、相对稳定的香气、香味风格，而随着烟包的高档化，印刷工艺和印刷过程越来越复杂，印刷过程中所使用的VOC大量残留在烟包中，不仅会改变卷烟的吸食品质，甚至会危害到消费者的健康。独特的、相对稳定的香气、香味风格重组，而随着烟包的高档化，印刷工艺和印刷过程越来越复杂，印刷过程中所使用的VOC大量残留在烟包中，不仅会改变卷烟的吸食品质，甚至会危害到消费者的健康。
Statistical analysis of anthropogenic non-methane VOC variability at a European background location（Jungfraujoch, Switzerland）
anthropogenic non-methane VOC European background location Jungfraujoch Switzerland
2009/6/2
In-situ measurements of 7 volatile hydrocarbons, CxHy, and 3 chlorinated organic compounds, CxHyClz, were performed at Jungfraujoch (Switzerland) during eight years (2000–2007). The analysis of 4-h re...
针对复杂产品客户需求中类别数多且数据量大的分类问题，利用最小最大概率机的概率信息和样本间隔信息，提出采用启发式方法解决编码设计问题。在算法中将一个减少了迭代次数的分类器视为弱化了的分类器，同时保留分类器的间隔属性和几何特性，并利用高维映射将分类器输出映射到特征空间，在弱化阶段大量减少了整体的迭代次数而在合成阶段利用非线性映射来提升性能。通过对叉车产品客户需求的数值试验证明算法具有较好的分类效果，降...
Measurement of Aldehyde and VOC Emissions from Plywood of Various Formaldehyde Emission Grades
aldehyde VOC emission small chamber method plywood
2009/3/6
Aldehydes and volatile organic compounds (VOCs) emission from plywood of various formaldehyde emission grades were measured using a small chamber method (JIS A 1901). The effect of the formaldehyde em...
Sorption isotherm of chloroform in polyvinyl dimethylsiloxane （PVDMS） polymer film was measured via the gravimetric method, and this film was confirmed experimentally to be good membrane material to ...