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Landscape Effects on Decomposition
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作者 Walter G. Whitford Yosef Steinberger 《Open Journal of Ecology》 2021年第3期267-275,共9页
The average annual rainfall was close to the average for the Jornada Experimental Range basin (225 mm<span style="white-space:nowrap;">&#8729;</span>y<sup><span style="white-spa... The average annual rainfall was close to the average for the Jornada Experimental Range basin (225 mm<span style="white-space:nowrap;">&#8729;</span>y<sup><span style="white-space:nowrap;">&#8722;</span>1</sup>). Decomposition of leaf litter bags on the soil surface was a function of the rainfall at the site and of soil texture. Sites with the highest splash erosion and infiltration (highest sand content) had the highest decomposition rates. There was no evidence that run-off, run-on processes had an effect on the decomposition of surface litter. Root decomposition was only different at one of the tarbush sites (p > 0.001) and that difference was primarily due to soil texture and spatial distribution of rainfall. High concentration of the clay-silt fraction resulted in differences in mass loss of surface litter at grassland, dry-lakes, and tarbush sites. One site at each of these was different from the other two sites because they are between 8 and 20 km from the other two sites. 展开更多
关键词 surface Litter decomposition Tethered Root Mass Loss RAINFALL Splash Erosion
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Identification of Model Parameters of Vaporized Hydrogen Peroxide Decomposi-tion Flux on Building Materials for Compu-tational Fluid Dynamics
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作者 Kazuhide Ito Sung-Jun Yoo Hirofumi Horata 《Journal of Environmental Protection》 2016年第2期212-229,共18页
To maintain healthy and sanitary indoor air quality, development of effective decontamination measures for the indoor environment is important and hydrogen peroxide is often used as decontamination agent in healthcare... To maintain healthy and sanitary indoor air quality, development of effective decontamination measures for the indoor environment is important and hydrogen peroxide is often used as decontamination agent in healthcare environment. In this study, we focused on the decomposition phenomena of vaporized hydrogen peroxide on wall surfaces in indoor environment and discussed a wall surface decomposition model for vaporized hydrogen peroxide using computational fluid dynamics to simulate the concentration distributions of vaporized hydrogen peroxide. A major drawback to using numerical simulations is the lack of sufficient data on boundary conditions for various types of building materials and hence. We also conducted the fundamental chamber experiment to identify the model parameters of wall surface decomposition model for targeting five types of building materials. 展开更多
关键词 Vaporized Hydrogen Peroxide Computational Fluid Dynamics Wall surface decomposition Model Chamber Experiment
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Automatic decomposition of pediatric high density surface EMG:A pilot study
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作者 Maoqi Chen Ping Zhou 《Medicine in Novel Technology and Devices》 2021年第4期50-54,共5页
This pilot study presents a novel application of high density surface electromyography(EMG)decomposition in pediatric patients,with a view toward promoting its potential clinical application for examination of pediatr... This pilot study presents a novel application of high density surface electromyography(EMG)decomposition in pediatric patients,with a view toward promoting its potential clinical application for examination of pediatricneuromuscular diseases.Automatic progressive FastICA peel-off(APFP)framework was used to decompose high density surface EMG signals recorded from the first dorsal interosseous and abductor pollicis brevis muscles ofchildren with spinal muscular atrophy.The performance of the decomposition with reduced EMG recordingchannels was also investigated.In total 131 motor units were extracted from 15 trials of 64-channel(8×8)surface EMG.The decomposition yield reduced to 102 motor units when 36-channel(6×6)was used,amongwhich 84 motor units were common ones with an average matching rate of(95.68±5.26)%.The decompositionyield further reduced to 65 motor units when only 16-channel(4×4)was used,among which 57 were common ones with an average matching rate of(95.99±4.56)%.These results indicate that using the APFP frameworksingle motor unit activity can be reliably and automatically extracted from pediatric surface EMG signals recordedby an electrode array,which can facilitate potential clinical application of surface EMG as an alternative or supplement to invasive needle EMG for examination of neuromuscular diseases in children. 展开更多
关键词 Electromyography(EMG) Pediatric EMG surface EMG decomposition Spinal muscular atrophy Electrode array Automatic progressive FastICA peel-off
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