Three aza crowned Schiff base cobalt(II) complexes were synthesized and characterized,and the metallomicelle made up of the cobalt(II) complexes and surfactants,as mimic hydrolytic metalloenzyme,was used in catalytic ...Three aza crowned Schiff base cobalt(II) complexes were synthesized and characterized,and the metallomicelle made up of the cobalt(II) complexes and surfactants,as mimic hydrolytic metalloenzyme,was used in catalytic hydrolysis of bis(4-nitrophenyl) phosphate(BNPP).The mechanism of BNPP catalytic hydrolysis has been proposed based on the analytic result of specific absorption spectrum of the hydrolytic reaction systems.A kinetic mathematical model,for the calculation of the kinetic parameter of BNPP catalytic hydrolysis has been established based on the mechanism proposed.The effect of surfactant and temperature on the reaction rate of BNPP catalytic hydrolysis has been discussed.展开更多
The activities of the catalytic hydrolysis of phosphate diester （BNPP） [bis（p-nitrophenyl）phosphate diester] and plasmid DNA （pUC 18） by mononuclear macrocyclic polyamine metal complexes have been investigated i...The activities of the catalytic hydrolysis of phosphate diester （BNPP） [bis（p-nitrophenyl）phosphate diester] and plasmid DNA （pUC 18） by mononuclear macrocyclic polyamine metal complexes have been investigated in this paper. The results showed that the highest activity in hydrolysis of BNPP was obtained with le--Zn（II） complex （composed of lipophilic group） as catalyst. The hydrolysis rate enhancement is up to 3.64 × 10^4 fold. These metal complexes could effectively promote the cleavage of plasmid DNA （pUC18） at physiological conditions.展开更多
In line with achieving the outlook of Sustainable Energy Development(SED),Iran intends to increase the share of clean power to at least 8%of the country’s capacity by the end of 2026.This research aims to investigate...In line with achieving the outlook of Sustainable Energy Development(SED),Iran intends to increase the share of clean power to at least 8%of the country’s capacity by the end of 2026.This research aims to investigate the role and share of Bushehr Nuclear Power Plants(BNPP-1,2,3)in achieving the SED perspective of Iran,which has never been examined so far.In this connection,the comparative analyses of various power plants(PPs)of Iran including nuclear,fossil fuel,biomass,wind,solar thermal,photovoltaic,geothermal,and hydro PPs are carried out and discussed.The main indicators of SED such as Levelized Cost of Electricity(LCOE)metric,grid-level system cost,investment cost,external cost,average CO_(2) equivalent emission,ecosystem impact,required land area,required water,preservation of natural resources,human health,created jobs,international cooperation,social acceptance and Corporate Social Responsibility(CSR),and energy-water hub are thoroughly investigated.The statistical data used in the present study are extracted based on the authors’experiences gained during the construction,operation and maintenance(O&M)of BNPP-1,the energy-environment balance sheets of Iran,as well as the design documents of BNPPs.Moreover,the gathered data are evaluated using MatLab programing language and analyzed in terms of comparative diagrams.The evaluations of BNPP-1 performance within the framework of SED indicate that BNPP-1 has little effect on ecosystems and is among the lowest greenhouse gases emitters compared to other Iran’s PPs so that it annually prevent the release of 0.7 million tonnes of carbon,SO_(x),and NO_(x) compared to a gas-fired PP.Also,the cost analysis shows that the external cost of BNPP-1 is nearly zero and the grid-level cost is approximately 3 USD/(MW·h)which is much lower than that for renewable powers.As per the LCOE metric and the cost of fuel supply,BNPP-1 is cost-competitive with other Iran’s PPs.The nuclear fuel cost of BNPP-1 is nearly 49 million USD per year which is at least 666 million USD per year less than Iran’s fossil fuel power plants(FFPPs).As per the nuclear and radiation safety of BNPP-1,the results illustrate that the average dose received by the residents living around the BNPP-1 is 2×10^(−4) mSv/year that is 10000 times smaller than the average natural background radiation.Within the past ten years of BNPP-1 operation,no increase in cancers or death of skilled workers and residents living around the BNPP-1 has been reported.In addition to the production of clean power and freshwater,BNPP-1 has been developing excellent international relations and has been creating high-paying jobs,in particular for the local societies.Consequently,BNPP-1 could minimize the socio-economic and environmental concerns compared to the other Iran’s PPs,and therefore,BNPPs may play a vital and key role towards achieving the SED outlook of Iran through producing clean,reasonably-priced,environmentally friendly,reliable,and sustainable power and freshwater.Accordingly,Iran is to substitute nuclear power with more portions of the FFPPs in line with the sustainable development goals.展开更多
The cationic surfactant metallomicelle made from CTAB micelle and crown Schiff base transitional metal complexes was used in catalytic hydrolysis of Bis(4-nitrophenyl)phosphate(BNPP)in this paper.The study on BNPP hyd...The cationic surfactant metallomicelle made from CTAB micelle and crown Schiff base transitional metal complexes was used in catalytic hydrolysis of Bis(4-nitrophenyl)phosphate(BNPP)in this paper.The study on BNPP hydrolytic kinetics shows that the release rate of the second p-nitrophenol of BNPP is higher than that of the first p-nitrophenol of BNPP,and the catalytic activity of the metallomicelle is higher than that of the complex aqueous solution.Michanelis constant and the apparent active energy for the catalytic reaction were calculated.展开更多
文摘Three aza crowned Schiff base cobalt(II) complexes were synthesized and characterized,and the metallomicelle made up of the cobalt(II) complexes and surfactants,as mimic hydrolytic metalloenzyme,was used in catalytic hydrolysis of bis(4-nitrophenyl) phosphate(BNPP).The mechanism of BNPP catalytic hydrolysis has been proposed based on the analytic result of specific absorption spectrum of the hydrolytic reaction systems.A kinetic mathematical model,for the calculation of the kinetic parameter of BNPP catalytic hydrolysis has been established based on the mechanism proposed.The effect of surfactant and temperature on the reaction rate of BNPP catalytic hydrolysis has been discussed.
基金supported by the Science and Technology Department(No.04JY029-018)Education Department of Sichuan Province(No.2006ZD049).
文摘The activities of the catalytic hydrolysis of phosphate diester （BNPP） [bis（p-nitrophenyl）phosphate diester] and plasmid DNA （pUC 18） by mononuclear macrocyclic polyamine metal complexes have been investigated in this paper. The results showed that the highest activity in hydrolysis of BNPP was obtained with le--Zn（II） complex （composed of lipophilic group） as catalyst. The hydrolysis rate enhancement is up to 3.64 × 10^4 fold. These metal complexes could effectively promote the cleavage of plasmid DNA （pUC18） at physiological conditions.
文摘In line with achieving the outlook of Sustainable Energy Development(SED),Iran intends to increase the share of clean power to at least 8%of the country’s capacity by the end of 2026.This research aims to investigate the role and share of Bushehr Nuclear Power Plants(BNPP-1,2,3)in achieving the SED perspective of Iran,which has never been examined so far.In this connection,the comparative analyses of various power plants(PPs)of Iran including nuclear,fossil fuel,biomass,wind,solar thermal,photovoltaic,geothermal,and hydro PPs are carried out and discussed.The main indicators of SED such as Levelized Cost of Electricity(LCOE)metric,grid-level system cost,investment cost,external cost,average CO_(2) equivalent emission,ecosystem impact,required land area,required water,preservation of natural resources,human health,created jobs,international cooperation,social acceptance and Corporate Social Responsibility(CSR),and energy-water hub are thoroughly investigated.The statistical data used in the present study are extracted based on the authors’experiences gained during the construction,operation and maintenance(O&M)of BNPP-1,the energy-environment balance sheets of Iran,as well as the design documents of BNPPs.Moreover,the gathered data are evaluated using MatLab programing language and analyzed in terms of comparative diagrams.The evaluations of BNPP-1 performance within the framework of SED indicate that BNPP-1 has little effect on ecosystems and is among the lowest greenhouse gases emitters compared to other Iran’s PPs so that it annually prevent the release of 0.7 million tonnes of carbon,SO_(x),and NO_(x) compared to a gas-fired PP.Also,the cost analysis shows that the external cost of BNPP-1 is nearly zero and the grid-level cost is approximately 3 USD/(MW·h)which is much lower than that for renewable powers.As per the LCOE metric and the cost of fuel supply,BNPP-1 is cost-competitive with other Iran’s PPs.The nuclear fuel cost of BNPP-1 is nearly 49 million USD per year which is at least 666 million USD per year less than Iran’s fossil fuel power plants(FFPPs).As per the nuclear and radiation safety of BNPP-1,the results illustrate that the average dose received by the residents living around the BNPP-1 is 2×10^(−4) mSv/year that is 10000 times smaller than the average natural background radiation.Within the past ten years of BNPP-1 operation,no increase in cancers or death of skilled workers and residents living around the BNPP-1 has been reported.In addition to the production of clean power and freshwater,BNPP-1 has been developing excellent international relations and has been creating high-paying jobs,in particular for the local societies.Consequently,BNPP-1 could minimize the socio-economic and environmental concerns compared to the other Iran’s PPs,and therefore,BNPPs may play a vital and key role towards achieving the SED outlook of Iran through producing clean,reasonably-priced,environmentally friendly,reliable,and sustainable power and freshwater.Accordingly,Iran is to substitute nuclear power with more portions of the FFPPs in line with the sustainable development goals.
文摘The cationic surfactant metallomicelle made from CTAB micelle and crown Schiff base transitional metal complexes was used in catalytic hydrolysis of Bis(4-nitrophenyl)phosphate(BNPP)in this paper.The study on BNPP hydrolytic kinetics shows that the release rate of the second p-nitrophenol of BNPP is higher than that of the first p-nitrophenol of BNPP,and the catalytic activity of the metallomicelle is higher than that of the complex aqueous solution.Michanelis constant and the apparent active energy for the catalytic reaction were calculated.
