Results 31 to 40 of about 36,118 (310)

Zinc and lead recovery from jarosite residues produced in zinc hydrometallurgy by vacuum reduction and distillation

open access: yesGreen 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
doaj   +1 more source

Experimental and theoretical studies on volatilization process of heat-enhanced organic pollutants from soils

open access: yesYantu gongcheng xuebao, 2019
In order to study the laws of volatilization removal of organic pollutants from soils and the influencing factors of volatilization process under heat-enhanced conditions, the indoor volatilization model experiments are designed.
LU Liang-liang , LIU Zhi-bin , WEI Qi-bing , MAO Bai-yang
doaj   +1 more source

Paul Virilio: Clinical Theory

open access: yesMedia Theory, 2019
We characterize Paul Virilio as a «clinical» thinker who diagnoses systemic problems of modernity in accidents and unusual incidents. Virilio’s method of clinical theoretical diagnosis is illustrated through an examination of common elements in his ...
Jim Morrow, Rob Shields
doaj   +1 more source

Inoculation with chlamydospores of Trichoderma asperellum SM-12F1 accelerated arsenic volatilization and influenced arsenic availability in soils

open access: yesJournal of Integrative Agriculture, 2015
Fungi capable of arsenic (As) accumulation and volatilization are hoped to tackle As-contaminated environment in the future. However, little data is available regarding their performances in field soils.
Xiu-rong WANG   +7 more
doaj   +1 more source

THE FRACTIONAL VOLATILITY MODEL AND ROUGH VOLATILITY

open access: yesInternational Journal of Theoretical and Applied Finance, 2023
The question of the volatility roughness is interpreted in the framework of a data-reconstructed fractional volatility model, where volatility is driven by fractional noise. Some examples are worked out and, using the Malliavin calculus for fractional processes, an option pricing equation and its solution are obtained.
openaire   +2 more sources

Good Volatility, Bad Volatility and Option Pricing [PDF]

open access: yesSSRN Electronic Journal, 2016
Advances in variance analysis permit the splitting of the total quadratic variation of a jump-diffusion process into upside and downside components. Recent studies establish that this decomposition enhances volatility predictions and highlight the upside/downside variance spread as a driver of the asymmetry in stock price distributions. To appraise the
Feunou, Bruno, Okou, Cédric
openaire   +2 more sources

Kinetic study on HCN volatilization in gold leaching tailing ponds [PDF]

open access: yes, 2017
In this work, the detailed analysis of HCN volatilization, taking place in tailing storage facilities, was made. Volatilization experiments were performed at conditions typical of gold leaching industrial tailing ponds.
Gómez García, M.Á.   +7 more
core   +1 more source

Maize initial development as affected by nitrogen sources and rates at sowing time [PDF]

open access: yesBiotemas, 2009
The growth of notillage has stimulated an increase in nitrogen applied at maize sowing time. This work was carried out aiming to evaluate the effects of nitrogen fertilizer sources and rates on maize germination.
Paula Bianchet   +2 more
doaj  

Air-Sea Exchange of Legacy POPs in the North Sea Based on Results of Fate and Transport, and Shelf-Sea Hydrodynamic Ocean Models

open access: yesAtmosphere, 2014
The air-sea exchange of two legacy persistent organic pollutants (POPs), γ-HCH and PCB 153, in the North Sea, is presented and discussed using results of regional fate and transport and shelf-sea hydrodynamic ocean models for the period 1996–2005.
Kieran O'Driscoll
doaj   +1 more source

Computational Study on Parametric Variation with Solar Heat Induction of an Entrained Flow Gasifier

open access: yesEnergies, 2022
Gasification has played an important role in the sustainable use of waste biomass, providing useful combustible gases in the process. Gasification has an important role in waste management and promotes energy independence for many oil-deficit countries ...
Anirudh Singh   +3 more
doaj   +1 more source

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