Results 41 to 50 of about 746,155 (294)
Study on the Causes for ICP-MS Signal Intensity Declination of Os Water Absorption Liquid
Yankuang ceshi, 2018 BACKGROUND Os can be separated from the sample matrix by distillation, and the absorbing liquid can be introduced into ICP-MS directly, which is a key step of the molybdenite Re-Os isotopic age analysis.
ZHOU Li-min +5 more
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Distribution of soil selenium in China is potentially controlled by deposition and volatilization?
Scientific Reports, 2016 Elucidating the environmental drivers of selenium (Se) spatial distribution in soils at a continental scale is essential to better understand it’s biogeochemical cycling to improve Se transfer into diets.
Guoxin Sun +6 more
semanticscholar +1 more source
A simple joint model for returns, volatility and volatility of volatility
Journal of Econometrics, 2023 Abstract We propose a model that allows for conditional heteroskedasticity in the volatility of asset returns and incorporates current return information into the volatility nowcast and forecast. Our model can capture all stylised facts of asset returns even with Gaussian innovations and is simple to implement.
openaire +2 more sources
Rejected Sago Starch as a Coating Material to Mitigate Urea-Nitrogen Emission
Agronomy, 2022 Urea–nitrogen is commonly lost through ammonia (NH3) volatilization, denitrification, and nitrate (NO3−) leaching. Rejected sago starch (RSS), which is a by-product of sago flour extraction, could be used to minimize NH3 volatilization from urea.
Rajan Kavitha +4 more
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Green Processing and Synthesis, 2018 Jarosite residues in zinc hydrometallurgy are considered as hazardous waste as they contain heavy metals such as Zn and Pb. A novel vacuum reduction and distillation process has been put forward to recover Zn and Pb from jarosite residues.
Li Jin, Ma Hongzhou
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, 2017 This study was conducted to determine the effect of biochar application on nitrogen (N) leaching, ammonia (NH3) volatilization, and fertilizer N use efficiency (NUE) in two soils with different properties (loamy and sandy).
Zunqi Liu +5 more
semanticscholar +1 more source
The memory of volatility [PDF]
Quantitative Finance and Economics, 2018 The focus of the volatility literature on forecasting and the predominance of the conceptually simpler HAR model over long memory stochastic volatility models has led to the fact that the actual degree of memory estimates has rarely been considered. Estimates in the literature range roughly between 0.4 and 0.6 - that is from the higher stationary to ...
Wenger, Kai +2 more
openaire +3 more sources
Using DNDC Model to Help Mitigate Ammonia Volatilization from Paddy Fields
Guan'gai paishui xuebao, 2023 【Objective】 Reducing nitrogen loss from leaching and emissions is essential to increasing nitrogen fertilizer use efficiency in developing sustainable agriculture.
BI Wentong +4 more
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, 2017 The objectives of this study were to evaluate the effects of different fertilizer types and application rates on ammonia volatilization loss and to explore nitrogen distribution and nitrogen use efficiency using the 15N isotope tracing technique in ...
Liu Yangyang +4 more
semanticscholar +1 more source
Fate of allelochemicals in the soil Destino de aleloquímicos no solo
Ciência Rural, 1997 Allelochemicals are compounds released by one plant or plant residues that may have a negative or positive effect on other plant. The importance of allelopathy was extensively explored during the past three decades, with the work concentrating in the ...
Ribas Antonio Vidal, Thomas Trost Bauman
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