Innately designed to induce physiological changes,pharmaceuticals are foreknowingly hazardous to the ecosystem.Advanced oxidation processes(AOPs)are recognized as a set of contemporary and highly efficient methods bei...Innately designed to induce physiological changes,pharmaceuticals are foreknowingly hazardous to the ecosystem.Advanced oxidation processes(AOPs)are recognized as a set of contemporary and highly efficient methods being used as a contrivance for the removal of pharmaceutical residues.Since reactive oxygen species(ROS)are formed in these processes to interact and contribute directly toward the oxidation of target contaminant(s),a profound insight regarding the mechanisms of ROS leading to the degradation of pharmaceuticals is fundamentally significant.The conceptualization of some specific reaction mechanisms allows the design of an effective and safe degradation process that can empirically reduce the environmental impact of themicropollutants.This review mainly deliberates themechanistic reaction pathways for ROS-mediated degradation of pharmaceuticals often leading to complete mineralization,with a focus on acetaminophen as a drug waste model.展开更多
While reliance on renewable energy resources has become a reality, there is still a need to deploy greener and more sustainable methods in order to achieve sustainable development goals. Indeed, green hydrogen is curr...While reliance on renewable energy resources has become a reality, there is still a need to deploy greener and more sustainable methods in order to achieve sustainable development goals. Indeed, green hydrogen is currently believed to be a reliable solution for global warming and the pollution challenges arising from fossil fuels, making it the resilient fuel of the future. However, the sustainability of green hydrogen technologies is yet to be achieved. In this context, generation of green hydrogen with the aid of deep eutectic solvents(DESs) as green mixtures has been demonstrated as a promising research area. This systematic review article covers green hydrogen generation through water splitting and biomass fermentation when DESs are utilized within the generation process. It also discusses the incorporation of DESs in fuel cell technologies. DESs can play a variety of roles such as solvent, electrolyte, or precursor;colloidal suspension and reaction medium;galvanic replacement, shape-controlling, decoration, or extractive agent;finally oxidant. These roles are relevant to several methods of green hydrogen generation, including electrocatalysis, photocatalysis, and fermentation. As such, it is of utmost importance to screen potential DES formulations and determine how they can function in and contribute throughout the green hydrogen mobility stages. The realization of super green hydrogen generation stands out as a pivotal milestone in our journey towards achieving a more sustainable form of development;DESs have great potential in making this milestone achievable. Overall, incorporating DESs in hydrogen generation constitutes a promising research area and offers potential scalability for green hydrogen production, storage,transport, and utilization.展开更多
We analyze the connectedness between major cryptocurrencies and nonfungible tokens(NFTs)for different quantiles employing a time-varying parameter vector autoregression approach.We find that lower and upper quantile s...We analyze the connectedness between major cryptocurrencies and nonfungible tokens(NFTs)for different quantiles employing a time-varying parameter vector autoregression approach.We find that lower and upper quantile spillovers are higher than those at the median,meaning that connectedness augments at extremes.For normal,bearish,and bullish markets,Bitcoin Cash,Bitcoin,Ethereum,and Litecoin consistently remain net transmitters,while NFTs receive innovations.However,spillover topology at both extremes becomes simpler—from cryptocurrencies to NFTs.We find no markets useful for mitigating BTC risks,whereas BTC is capable of reducing the risk of other digital assets,which is a valuable insight for market players and investors.展开更多
This paper examines the high frequency multiscale relationships and nonlinear multiscale causality between Bitcoin,Ethereum,Monero,Dash,Ripple,and Litecoin.We apply nonlinear Granger causality and rolling window wavel...This paper examines the high frequency multiscale relationships and nonlinear multiscale causality between Bitcoin,Ethereum,Monero,Dash,Ripple,and Litecoin.We apply nonlinear Granger causality and rolling window wavelet correlation(RWCC)to 15 min-data.Empirical RWCC results indicate mostly positive co-movements and long-term memory between the cryptocurrencies,especially between Bitcoin,Ethereum,and Monero.The nonlinear Granger causality tests reveal dual causation between most of the cryptocurrency pairs.We advance evidence to improve portfolio risk assessment,and hedging strategies.展开更多
Recent years have seen notable progress in the use of deep eutectic solvents(DESs)in pharmaceutical applications.This is ascribed to the high preparation flexibility of DES mixtures and the ability tomulti-tune their ...Recent years have seen notable progress in the use of deep eutectic solvents(DESs)in pharmaceutical applications.This is ascribed to the high preparation flexibility of DES mixtures and the ability tomulti-tune their physicochemical properties and biopharmaceutical characteristics.The aim of this article is to provide perspective concerning the applications of DESs in pharmaceutical systems and their potential based on the current state of the field.Notably,there is some disagreement about whether some mixtures are in fact DESs or ionic liquids(ILs)[1].This indicates the need for more robust standards and definitions so as to avoid confusion within the scientific community.Many studies consider DESs to either constitute a subclass of ILs,analogs of ILs,or alternatives to ILs.In this regard,it would be best for the IUPAC to standardize DES classification and their similarity/dissimilarity with ILs.展开更多
Correction to:Financ Innov 7:75(2021)https://doi.org/10.1186/s40854-021-00290-w Following publication of this article(Mensi et al.2021),the corresponding author reported that his 2nd affiliation was missing.So the cor...Correction to:Financ Innov 7:75(2021)https://doi.org/10.1186/s40854-021-00290-w Following publication of this article(Mensi et al.2021),the corresponding author reported that his 2nd affiliation was missing.So the corresponding author’s affiliations are:1Department of Economics and Finance,College of Economics and Political Science,Sultan Qaboos University,Muscat,Oman 2South Ural State University,76,Lenin Prospekt,Chelyabinsk,Russian Federation The affiliations have been updated in this Correction and in the original article.展开更多
Low salinity water is an emerging enhanced oil recovery(EOR)method that causes wettability alteration towards a favorable state to reduce residual oil saturation,while water alternating gas(WAG)is a proven EOR process...Low salinity water is an emerging enhanced oil recovery(EOR)method that causes wettability alteration towards a favorable state to reduce residual oil saturation,while water alternating gas(WAG)is a proven EOR process that enhances oil recovery by controlling mobility of both water and gas.Therefore,combining the two EOR processes as low salinity water-alternating CO2 EOR injection(LSWA CO2)can further improve oil recovery by promoting the synergy of the mechanisms underlying these two methods.Core flooding experiments,contact angle,interfacial tension(IFT),and CO2 solubility measurement in oil and brine were conducted to investigate the viability and performance of LSWA CO2 in sandstone reservoirs.A favorable wettability alteration,along with IFT reduction and mobility control,are the mechanisms that contribute to residual oil mobilization efficiencies during the LSWA CO2 EOR process.In addition,LSWA CO2 core flooding experiments result in a significant incremental oil recovery.Three smart waters were tested in our research,to examine the impact of changing cationic composition on oil recovery.The solutions are designed brines as NaCl(SW1),MgCl2(SW2),and KCl(SW3).Of the three solutions,SW1 yields the highest incremental oil recovery and highest IFT reduction.In addition,it results in a favorable wettability alteration towards a more water-wet state.In all cases,introducing CO2 to the brine/oil system shows a great advantage in terms of enhancing wettability modification,promoting IFT reduction,and controlling the displacement front of the injected fluid through mobility control.展开更多
基金the Ministry of Higher Education,Research and Innovation-Oman for their support of this research through TRC block funding grant No.BFP/RGP/EBR/22/378.
文摘Innately designed to induce physiological changes,pharmaceuticals are foreknowingly hazardous to the ecosystem.Advanced oxidation processes(AOPs)are recognized as a set of contemporary and highly efficient methods being used as a contrivance for the removal of pharmaceutical residues.Since reactive oxygen species(ROS)are formed in these processes to interact and contribute directly toward the oxidation of target contaminant(s),a profound insight regarding the mechanisms of ROS leading to the degradation of pharmaceuticals is fundamentally significant.The conceptualization of some specific reaction mechanisms allows the design of an effective and safe degradation process that can empirically reduce the environmental impact of themicropollutants.This review mainly deliberates themechanistic reaction pathways for ROS-mediated degradation of pharmaceuticals often leading to complete mineralization,with a focus on acetaminophen as a drug waste model.
基金the Ministry of Higher Education,Research and Innovation(MoHERI)Oman for their support of this research through TRC block funding Grant no.:BFP/RGP/EBR/22/378。
文摘While reliance on renewable energy resources has become a reality, there is still a need to deploy greener and more sustainable methods in order to achieve sustainable development goals. Indeed, green hydrogen is currently believed to be a reliable solution for global warming and the pollution challenges arising from fossil fuels, making it the resilient fuel of the future. However, the sustainability of green hydrogen technologies is yet to be achieved. In this context, generation of green hydrogen with the aid of deep eutectic solvents(DESs) as green mixtures has been demonstrated as a promising research area. This systematic review article covers green hydrogen generation through water splitting and biomass fermentation when DESs are utilized within the generation process. It also discusses the incorporation of DESs in fuel cell technologies. DESs can play a variety of roles such as solvent, electrolyte, or precursor;colloidal suspension and reaction medium;galvanic replacement, shape-controlling, decoration, or extractive agent;finally oxidant. These roles are relevant to several methods of green hydrogen generation, including electrocatalysis, photocatalysis, and fermentation. As such, it is of utmost importance to screen potential DES formulations and determine how they can function in and contribute throughout the green hydrogen mobility stages. The realization of super green hydrogen generation stands out as a pivotal milestone in our journey towards achieving a more sustainable form of development;DESs have great potential in making this milestone achievable. Overall, incorporating DESs in hydrogen generation constitutes a promising research area and offers potential scalability for green hydrogen production, storage,transport, and utilization.
基金supported by the Ministry of Education of the Republic of Korea and the National Research Foundation of Korea(NRF-2022S1A5A2A01038422)partly funded by the University of Economics Ho Chi Minh City,Vietnam.
文摘We analyze the connectedness between major cryptocurrencies and nonfungible tokens(NFTs)for different quantiles employing a time-varying parameter vector autoregression approach.We find that lower and upper quantile spillovers are higher than those at the median,meaning that connectedness augments at extremes.For normal,bearish,and bullish markets,Bitcoin Cash,Bitcoin,Ethereum,and Litecoin consistently remain net transmitters,while NFTs receive innovations.However,spillover topology at both extremes becomes simpler—from cryptocurrencies to NFTs.We find no markets useful for mitigating BTC risks,whereas BTC is capable of reducing the risk of other digital assets,which is a valuable insight for market players and investors.
文摘This paper examines the high frequency multiscale relationships and nonlinear multiscale causality between Bitcoin,Ethereum,Monero,Dash,Ripple,and Litecoin.We apply nonlinear Granger causality and rolling window wavelet correlation(RWCC)to 15 min-data.Empirical RWCC results indicate mostly positive co-movements and long-term memory between the cryptocurrencies,especially between Bitcoin,Ethereum,and Monero.The nonlinear Granger causality tests reveal dual causation between most of the cryptocurrency pairs.We advance evidence to improve portfolio risk assessment,and hedging strategies.
文摘Recent years have seen notable progress in the use of deep eutectic solvents(DESs)in pharmaceutical applications.This is ascribed to the high preparation flexibility of DES mixtures and the ability tomulti-tune their physicochemical properties and biopharmaceutical characteristics.The aim of this article is to provide perspective concerning the applications of DESs in pharmaceutical systems and their potential based on the current state of the field.Notably,there is some disagreement about whether some mixtures are in fact DESs or ionic liquids(ILs)[1].This indicates the need for more robust standards and definitions so as to avoid confusion within the scientific community.Many studies consider DESs to either constitute a subclass of ILs,analogs of ILs,or alternatives to ILs.In this regard,it would be best for the IUPAC to standardize DES classification and their similarity/dissimilarity with ILs.
文摘Correction to:Financ Innov 7:75(2021)https://doi.org/10.1186/s40854-021-00290-w Following publication of this article(Mensi et al.2021),the corresponding author reported that his 2nd affiliation was missing.So the corresponding author’s affiliations are:1Department of Economics and Finance,College of Economics and Political Science,Sultan Qaboos University,Muscat,Oman 2South Ural State University,76,Lenin Prospekt,Chelyabinsk,Russian Federation The affiliations have been updated in this Correction and in the original article.
文摘Low salinity water is an emerging enhanced oil recovery(EOR)method that causes wettability alteration towards a favorable state to reduce residual oil saturation,while water alternating gas(WAG)is a proven EOR process that enhances oil recovery by controlling mobility of both water and gas.Therefore,combining the two EOR processes as low salinity water-alternating CO2 EOR injection(LSWA CO2)can further improve oil recovery by promoting the synergy of the mechanisms underlying these two methods.Core flooding experiments,contact angle,interfacial tension(IFT),and CO2 solubility measurement in oil and brine were conducted to investigate the viability and performance of LSWA CO2 in sandstone reservoirs.A favorable wettability alteration,along with IFT reduction and mobility control,are the mechanisms that contribute to residual oil mobilization efficiencies during the LSWA CO2 EOR process.In addition,LSWA CO2 core flooding experiments result in a significant incremental oil recovery.Three smart waters were tested in our research,to examine the impact of changing cationic composition on oil recovery.The solutions are designed brines as NaCl(SW1),MgCl2(SW2),and KCl(SW3).Of the three solutions,SW1 yields the highest incremental oil recovery and highest IFT reduction.In addition,it results in a favorable wettability alteration towards a more water-wet state.In all cases,introducing CO2 to the brine/oil system shows a great advantage in terms of enhancing wettability modification,promoting IFT reduction,and controlling the displacement front of the injected fluid through mobility control.
