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101.
Neural Computing and Applications - Deep learning has been successfully applied in process monitoring in recent years due to its powerful feature extraction. However, these monitoring methods are... 相似文献
102.
Gang Zhao Le Shi Jianbo Xu Xiaohui Yan T.S. Zhao 《International Journal of Hydrogen Energy》2018,43(3):1470-1478
In this paper, we have investigated the role of phosphorus (P) in nitrogen (N) and phosphorus dual-doped carbon electrocatalyst for oxygen reduction reaction (ORR) in alkaline media with three samples prepared by varying the doping orders of N and P. Results show that the resultant N-POMC (first doped with P, then N) exhibits an outstanding activity for ORR in alkaline media. The mechanism leading to the improved activity is found to be associated with the orientation effect of the first doped P on the later doped N, by increasing the ratio of graphitic-N significantly. Furthermore, a portion of the first doped P can act as the doping sites and be replaced by the later doped N, called ‘self-sacrifice’ mode, which is confirmed by both experiments and density functional theory (DFT) calculations. However, this orientation effect cannot be observed in the other two dual-doped samples. In addition, experimental and DFT calculation also prove that the amount of graphitic-N is important in improving the activity for ORR. The doping strategy reported in this work is applicable to various co-doping systems in exploring the synergy effect of different dopants and improving activity for ORR. 相似文献
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Fei Ma Ju Wang Changhong Liu Xuzhong Lu Wei Chen Conggui Chen Jianbo Yang Lei Zheng 《Food Analytical Methods》2015,8(7):1629-1636
Multispectral imaging in the visible and near-infrared (405–970 nm) regions was tested for nondestructive discrimination of insect-infested, moldy, heterochromatic, and rancidity in sunflower seeds. An excellent classification (accuracy >97 %) for intact sunflower seeds could be achieved using Fisher’s linear discriminant function based on 10 feature wavelengths that were selected from the original 19 wavelengths by Wilks’ lambda stepwise method. Intact sunflower seeds with different degree of rancidity could be precisely clustered by multispectral imaging technology combined with principal component analysis-cluster analysis (PCA-CA). Our results demonstrate the capability of multispectral imaging technology as a tool for rapid and nondestructive analysis of seed quality attributes, which enables many applications in the agriculture and food industry. 相似文献
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A new class of biobased thermoset resins, methacrylated four‐armed star‐shaped polylactides (M4sPLAs), was prepared. The effect of star architecture, e.g. varying arm length, on the properties of the cured products was examined. Based on differential scanning calorimetry, the non‐isothermal and isothermal curing behaviors of these M4sPLAs were investigated. Various curing kinetic parameters were obtained and elucidated using autocatalytic reaction models. Experimental results indicate that the oligomers can be crosslinked into a rigid network within a curing time varying from several minutes to more than an hour upon thermal initiation. The curing processes of M4sPLAs with varying arm length are different and complex, as indicated by the change of various kinetic parameters, reaction orders and evolutions of activation energy under the test reaction conditions. High crosslinking density is especially effective for improving the thermal stability of polylactide, but also leads to slower degradation rate and deterioration of its impact properties. Copyright © 2012 Society of Chemical Industry 相似文献
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针对掺混料仓不同部位和施工难点,在超高模板支撑系统、地脚螺栓、大体积混凝土等方面分别采取了多项施工措施,保证了掺混料仓工程的顺利施工,提高了结构工程施工技术水平,为同类工程提供了经验和方法。 相似文献
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锌是高炉的有害元素之一,其循环富煤会严重影响高炉稳定顺行。介绍了高炉中锌的主要来源和锌的主要氧化物ZnO的还原形式。针对锌元素对焦炭热性能的影响,设计了两种实验方案。一种方案是将焦炭置于锌蒸气的环境中进行吸附实验后,对其进行微观分析和热性能检测;另一种方案是在存在锌蒸气的情况下,通入CO2进行溶损反应后测定其热强度。两种实验结果表明:锌蒸气在焦炭上吸附能力很弱,不能与焦炭发生化学反应。只有在气氛中锌蒸气分压高时,温度降低时锌蒸气会冷凝附着在焦炭上,接触空气后氧化得到吸附有ZnO的焦炭。吸附ZnO的焦炭由于ZnO的催化作用使焦炭反应性升高,反应后强度降低。锌蒸气对焦炭热性能不会产生影响。 相似文献
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