共查询到19条相似文献,搜索用时 218 毫秒
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对现有纺织品负离子发生量测试方法和装置进行了对比,介绍了一种封闭式摩擦法测试装置,并通过实验验证了该装置的可行性和实用性。 相似文献
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新型PU革--负离子革的研制 总被引:2,自引:0,他引:2
医学研究已经证明 ,负离子产品对人体健康有保健作用。在介绍负离子作用的基础上 ,讨论了负离子PU革的开发过程和测试结果。结果表明 :2种负离子材料均能发射一定浓度的负离子 相似文献
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为了开发负离子丙纶/棉纤维混纺纱,介绍了负离子丙纶纤维的特点,根据负离子丙纶/棉纤维混纺纱的特点,通过工艺试验测试,分析了新工艺影响混纺纱质量的一些因素,探讨了提高混纺纱质量所采取的有效措施。 相似文献
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介绍了负离子功能的概念、功能材料分类与产生机理,研究了目前纺织面料负离子功能的测试标准和评价方法,从负离子纤维的制备方法和纺织品功能整理方法两个方面阐述了负离子功能汽车内饰面料的开发路径,并介绍了开发案例。负离子功能纺织品作为一种具有健康功能的内饰面料,有希望在汽车内饰中得到广泛应用。 相似文献
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《Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment》2013,30(10):1670-1672
An LC-MS/MS method was validated in accordance with 21CFR Part 58 Good Laboratory Practice for Non-clinical Laboratory Studies to measure the concentration of carrageenan in dose formulations used in a 28-day piglet dietary feeding study of swine-adapted infant formulations stabilised with carrageenan. Carrageenan concentrations in the test formulations were 0, 300, 1000 and 2250 mg kg–1 formula. The method for the measurement of carrageenan was LC-MS/MS coupled with ESI in negative-ion mode for detection. Linearity was established over the range 1.00–7.50 µg ml–1. Carrageenan dose formulation samples ranging from 0 to 2250 mg kg–1 of carrageenan were diluted to within the linearity range for measurement. 相似文献
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Hatch LE Creamean JM Ault AP Surratt JD Chan MN Seinfeld JH Edgerton ES Su Y Prather KA 《Environmental science & technology》2011,45(12):5105-5111
Organosulfate species have recently been identified as a potentially significant class of secondary organic aerosol (SOA) species, yet little is known about their behavior in the atmosphere. In this work, organosulfates were observed in individual ambient aerosols using single particle mass spectrometry in Atlanta, GA during the 2002 Aerosol Nucleation and Characterization Experiment (ANARChE) and the 2008 August Mini-Intensive Gas and Aerosol Study (AMIGAS). Organosulfates derived from biogenically produced isoprene were detected as deprotonated molecular ions in negative-ion spectra measured by aerosol time-of-flight mass spectrometry; comparison to high-resolution mass spectrometry data obtained from filter samples corroborated the peak assignments. The size-resolved chemical composition measurements revealed that organosulfate species were mostly detected in submicrometer aerosols and across a range of aerosols from different sources, consistent with secondary reaction products. Detection of organosulfates in a large fraction of negative-ion ambient spectra - ca. 90-95% during ANARChE and ~65% of submicrometer particles in AMIGAS - highlights the ubiquity of organosulfate species in the ambient aerosols of biogenically influenced urban environments. 相似文献
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针对现有纱线线密度测试装置所存在的缺陷,研制了纱线线密度及重量不匀率自动测试装置。此装置主要包括电子称重、弹簧线性加压、电子计长、变频卷绕及控制等部分。参照GB/T 4743-2009,设置试验长度及预加张力,介绍了利用该装置进行纱线线密度及重量不匀率测试的程序和方法。以T/R65/35筒子纱为例,采用此装置与传统缕纱测长机进行线密度对比试验,实践证明:此装置测试结果准确度达99.7%,而传统缕纱测长机测试结果准确度仅为95%,在线密度及重量不匀率测试中保证纱线连续无废纱产生,且测试方便,体积小,具有较高的应用及推广价值。 相似文献
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提出对移印套色印刷传送装置的改进措施,介绍接近开关检测、电路控制及定位装置的缓冲机构,说明传送装置的结构、工作原理及特点。 相似文献
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目的:研制一种用于咬合模拟试验的多连杆结构的咬合模拟装置。方法:分析了运用多连杆结构复刻人类口腔咬合轨迹的可行性,基于多连杆结构对咬合模拟装置进行机构设计,用Solidworks软件对装置的运动轨迹进行模拟仿真,并通过试验验证咬合模拟装置的有效性。结果:咬合模拟装置最大开口距离为50 mm,所选食材中胡萝卜咬合力最大为65.77 N,最小值为豆腐的2.05 N;咬合模拟试验与感官评价试验结果呈正相关,验证了咬合模拟装置的有效性。结论:咬合模拟装置可以有效地进行体外咬合模拟试验,其测力结果可以用于食品质地等研究。 相似文献
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