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The recognized significance of rumen microbiome has inspired efforts to examine the composition of rumen microbial communities in a large scale. One of the key research areas is to infer association and dependencies between members of rumen microbial communities through correlation analysis. However, it has been found that due to the compositional nature of data, simply applying correlation-based...
Presented are an overview of wetland processes related to atmospheric methane and terrestrial water storage, and a review remote sensing methods for wetland observations. Beyond known pathways of methane emission from wetlands, other pathways related to subterranean pressures from rising groundwater level and from subsurface transport flux in the aquifer are hypothesized. In synergy with current capabilities...
As one of the potent greenhouse gases, methane emission from ruminants has been intensively studied over the past decades. Various regression-based models have been applied to examine factors affecting enteric methane emission. Based on Bayesian networks, this paper proposes an alternative network-based approach to model the relationship among factors affecting enteric methane emissions from milking...
Emissions of the greenhouse gases N2O, CO2, and CH4 have increased in the past years. CH4 has a distinct contribution to global warming and climate change. Rice production plays an important role in CH4 emission. Thus, the rice fields in China should be considered in assessing CH4 emission. This study simulated CH4 emission in rice fields in China during the past 40 years (1971 to 2010) using the...
Methane is an important greenhouse gas (GHG) in the atmosphere. Conventional methods with Optical and infrared technology still have some questioned in large-area and time. With its advantage of acquiring geo-information in timely, speedy, all-day and all-weather over large areas, microwave remote sensing is one powerful approach in monitoring methane emissions to conventional methods. Ground-based...
Power and energy sector in South Africa is looking alternate ways for clean power production in order to cut down its carbon emissions caused by bulk production from coal fired power plants. Commercial farm-scale biogas plants have immense potential for energy production from livestock manure in South Africa, where various agricultural activities are practiced throughout the country. These biogas...
Natural wetlands are the largest land-based natural sources for methane (CH4) emissions. China's natural wetland area accounts for about 4% of the area of the natural wetlands worldwide. Based on the data of global lakes and wetlands, in this study we conducted modeling work of CH4 emissions from natural wetlands in China by using terrestrial ecosystem model (TEM) of the 1995-2005. The results show...
The cowl was first applied to semi-aerobic landfill. The refuse which had been land-filled for one year was taken to the work. Contracting with two similar simulated semi-aerobic landfills during about 200 days, it was found that cowl was helpful to degrading and stabilizing for refuse, also enhance the ventilation of the system and reduce methane emission. BDM of the semi-aerobic landfill with cowl...
Based on Thermal Infrared (TIR) satellite observations, previous studies have been suggesting for decades a relation between TIR anomalies and seismic activity. Among the others, a Robust Satellite data analysis Technique (RST) was proposed which provides a statistically based definition of ?TIR anomalies? and a suitable method for their identification even in very different local (e.g. related to...
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