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The concentrations of CO2 were measured by the supercontinuum laser at normal temperature and variable temperature accurately in this paper. The absorption spectra of CO2 at different concentrations(1.2%—9.0%) were measured in the wavelength range of 1 425—1 445 nm under the optical path of 26.4 m at 293 K and 1 atm. The experimental results showed that the positions of the primary and secondary absorption peaks(1 432 nm, 1 437 nm) were consistent with the HITRAN database. A linear model of concentration and signal intensity at 1 432 nm was established. The maximum relative error of the concentration measurement was 3.3%. The line intensities of 99.9% CO2 in the 1 425—1 445 nm at different temperatures(298—373 K, interval of 15 K) were measured. The influence of temperature changes on the concentration measurement result was corrected and the relative error of the concentration measurement was reduced to 1.4%. Finally, the source of the uncertainty of the entire spectrum measurement system was analyzed and evaluated. This paper demonstrate that the supercontinuum laser can achieve the long-distance measurement of the CO2 under normal temperature or variable temperature environment accurately, which provide an important reference for the long-distance gas detection on site and simultaneous detection of multi-component gases. 相似文献
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为改善过滤材料的使用性能,满足焦化厂除尘工况的使用要求,选用聚四氟乙烯乳液对玄武岩针刺滤料(X)、氟美斯针刺滤料(F)、玄武岩与氟美斯复合针刺滤料(XF)进行表面改性,并根据相关标准对滤料改性前后的热学性能、耐氧化性能、抗静电性能进行了测试。结果表明:3种滤料表面改性前后均为放热反应,表面改性前后热分解外推起始温度均在350℃左右,焦炉烟气平均温度在230℃,均高于使用温度,符合使用要求;经氧化剂处理,3种滤料表面改性后断裂强力损失率均值较小,说明抗氧化性能改善;表面改性前X滤料的感应静电等级为A级、F滤料的感应静电等级为A级、XF滤料的感应静电等级为C级,表面改性后X滤料、F滤料、XF滤料的感应静电等级均为B级。 相似文献
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文章采用符号学原理解析戏剧服饰的构成,阐述传统戏剧服饰的能指和所指元素,对传统淮剧服饰的戏衣、盔头、戏鞋的款式特征及质料、颜色、纹饰等形式因素进行分析,并通过演员穿着行为所蕴含的象征、审美、民俗等艺术符号综合体现。指出淮剧服饰既有服用功能的能指符号,又有民俗文化所指的意指符号,两者共同构成了服饰的艺术符号系统。对淮剧服饰的研究可以探寻戏剧服装表现形式的内涵,为淮剧的传承与发展起着促进作用。 相似文献
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随着科学技术的不断发展,许多新型先进的技术随之诞生,非真实感绘制是计算机图形学当中一个研究的重点问题,其是一项计算机技术和绘画艺术相结合的技术,其主要的是能够通过计算机来生成不具有照片真实感而具有手绘图形的技术。以下就主要的对于面向对象非真实感风格化图像处理技术进行探讨分析,提升其在使用中的效果。 相似文献