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Researchers use machine learning to find out which wildfires will burn out of control(图)
machine learning social media University of California
2019/10/18
Scientists at the University of California, Irvine have developed a new technique for predicting the final size of a wildfire from the moment of ignition.Built around a machine learning algorithm, the...
BURN SCAR MAPPING AND FIRE DAMAGE ASSESSMENT USING ERS-2 SAR IMAGES IN EAST KALIMANTAN, INDONESIA
Radar ERS-SAR Hazards Change Detection
2015/2/4
Burn scar identification and fire damage assessment was done using ERS-2 SAR radar images in East
Kalimantan, an Indonesian province severely affected by wildfires during a drought period in 1997/19...
BURN SEVERITY MAPPING IN AUSTRALIA 2009
Hazards Forest fire Change detection Landsat Landscape
2014/4/29
In 2009, the Victoria Department of Sustainability and Environment estimated approximately 430,000 hectares of Victoria Australia were burned by numerous bushfires. Burned Area Emergency Response (BAE...
Crash and burn Vehicle, collision, and driver factors that influence motor vehicle collision fires
Fire Semi trucks Injury Passenger vehicles Pickup trucks
2012/4/26
A retrospective population-based case–control study was performed to determine the association between vehicle fires, and vehicle, collision, and driver factors on highways with a posted speed limit o...
混氢对稀燃汽油机怠速性能的影响试验(Effect of Hydrogen Enrichment on the Performance of a Lean-burn Gasoline Engine at Idle)
汽油机 氢气 稀燃 怠速
2010/12/29
在一台安装了氢气电控喷射系统的汽油机上,通过调整喷氢脉宽,研究了氢气占进气体积分数为3%时混氢对稀燃汽油机怠速燃烧与排放性能的影响。试验结果表明,混氢后发动机指示热效率提高;火焰发展期与快速燃烧持续期缩短;过量空气系数为1.3时,平均指示有效压力的循环变动系数由原机的33.9%降低至混氢后的13.7%;稀燃条件下,进气混氢有利于改善汽油机怠速时的HC、CO与NOx排放。
燃烧室结构对稀燃天然气发动机性能的影响(Influence of the Combustion Chamber Structure on the Lean Burn CNG Engine Performance)
天然气发动机 燃烧室 稀薄燃烧
2009/5/22
阐述了稀燃天然气发动机缸内不同气体运动及其产生机理,分析了缸内气体运动对发动机燃烧过程的影响。针对稀燃天然气发动机的燃烧过程,设计了不同结构形状和尺寸的燃烧室,并分别通过数值模拟和试验方法,就不同结构的燃烧室对天然气发动机性能的影响进行了研究。结果显示,产生湍流强度大的燃烧室燃烧速度快,动力性和经济性较好,而NOx排放量也较大。