Results 61 to 70 of about 240,729 (368)
Effect of rice intermittent irrigation on nitrogen cycle and emission in a lysimeter study [PDF]
Caspian Journal of Environmental SciencesAlthough intermittent irrigation is widely regarded as a saving irrigation water technology in paddy fields, it can cause water and air pollution by changing the nitrogen cycle.
Atefeh M. Soltani, Maryam Navabian
doaj +1 more source
Tin Removal from Tin-Bearing Iron Concentrate with a Roasting in an Atmosphere of SO2 and CO
Metals, 2022 The tin could be volatilized and removed effectively from the tin-bearing iron concentrate while roasted in an atmosphere of SO2 and CO. The reduction of SO2 by CO occurred in preference to the SnO2 and Fe3O4, and the generated S2 could sulfurize the ...
Lei Li, Zhipeng Xu, Shiding Wang
doaj +1 more source
Volatility prediction comparison via robust volatility proxies: An empirical deviation perspective [PDF]
arXiv, 2021 Volatility forecasting is crucial to risk management and portfolio construction. One particular challenge of assessing volatility forecasts is how to construct a robust proxy for the unknown true volatility. In this work, we show that the empirical loss comparison between two volatility predictors hinges on the deviation of the volatility proxy from ...
arxiv
Advanced Engineering Materials, EarlyView.Developing process parameters for the laser‐based Powder Bed Fusion of metals can be a tedious task. Based on melt pool depth, the process parameters are transferable to different laser scan speeds. For this, understanding the melt pool scaling behavior is essential, particularly for materials with high thermal diffusivity, as a change in scaling ...
Markus Döring +2 more
wiley +1 more source
Microbial Methylation of Iodide in Unconfined Aquifer Sediments at the Hanford Site, USA
Frontiers in Microbiology, 2019 Incomplete knowledge of environmental transformation reactions limits our ability to accurately inventory and predictably model the fate of radioiodine.
Christopher E. Bagwell +4 more
doaj +1 more source
Dynamic experimental investigation on the volatilization behavior of lead and cadmium in the simulated Municipal Solid Waste (MSW) influenced by sulfur compounds during incineration [PDF]
, 2017 In China, coal, often with a high level of sulfur, is always mixed with municipal solid waste (MSW) in waste incineration plants due to the low heating value and high moisture content of MSW.
Changqi Liu +10 more
core +1 more source
Stochastic Volatility of Volatility in Continuous Time
SSRN Electronic Journal, 2009 This paper introduces the concept of stochastic volatility of volatility in continuous time and, hence, extends standard stochastic volatility (SV) models to allow for an additional source of randomness associated with greater variability in the data.
Barndorff-Nielsen, Ole, Veraart, Almut
openaire +3 more sources
Advanced Engineering Materials, EarlyView.Hybrid materials enable high‐performance components but are challenging to process. This study explores an inductive heating concept with spray cooling for steel–aluminum specimens in a two‐step process including friction welding and cup backward extrusion.
Armin Piwek +7 more
wiley +1 more source
Ciência Rural, 2011 A ureia é a principal fonte de N usada na agricultura, mas apresenta grandes perdas em arroz irrigado por alagamento. O objetivo deste trabalho foi avaliar a eficiência de fontes de N alternativas à ureia para utilização pelo arroz irrigado aplicadas em ...
Enio Marchesan +6 more
doaj +1 more source
Nitrogen loss assessment and environmental consequences in the loess soil of China [PDF]
, 2003 Attention is focused on fertilizer nitrogen loss and the environmental consequences in Shaanxi Province in loess region of China, including N losses to the atmosphere via ammonia volatilization, nitrification and denitrification, N losses to groundwater ...
Tong, Yanan
core