The paper refers to disproportionation of HIO and NaIO in aqueous media, in static and dynamic systems. The results of calculations, realized according to GATES/GEB principles, with use of an iterative computer progra...The paper refers to disproportionation of HIO and NaIO in aqueous media, in static and dynamic systems. The results of calculations, realized according to GATES/GEB principles, with use of an iterative computer program, are presented graphically. An example of the computer program with all physicochemical knowledge involved in the related algorithm is attached herewith.展开更多
Obtaining sulfate-based materials with large birefringence is of great challenge due to the weak polarizability anisotropy of the constituting spherical SO_(4)^(2-)tetrahedron.Here,we have implemented a polyhedron of ...Obtaining sulfate-based materials with large birefringence is of great challenge due to the weak polarizability anisotropy of the constituting spherical SO_(4)^(2-)tetrahedron.Here,we have implemented a polyhedron of stereoactive lone pair cations,IO_(3)-to the system to tackle the issue.Centimetre-sized single crystals of an alkali metal sulfate iodate,K_(2)SO_(4)·HIO_(3),have been readily grown by an accessible solution-evaporation method.Optical measurements on K_(2)SO_(4)·HIO_(3)single crystals reveal that the reported material exhibits a 70-fold increase in birefringence(ca.0.14 at 589.3 nm)compared to that of the singular sulfate,K_(2)SO_(4).In addition,K_(2)SO_(4)·HIO_(3)exhibits a blue-shifted UV cutoff edge of 275 nm,25 nm shorter than that ofα-HIO_(3),highlighting the key role of the SO_(4)^(2-)tetrahedron in broadening the transmittance window.展开更多
Two biological aerated filters （BAF） were setup for ammonia removal treatment of the circulation water in a marine aquaculture. One of the BAFs was bioaugmented with a heterotrophic nitrifying bacterium, Lutimonas s...Two biological aerated filters （BAF） were setup for ammonia removal treatment of the circulation water in a marine aquaculture. One of the BAFs was bioaugmented with a heterotrophic nitrifying bacterium, Lutimonas sp. H10, where the ammonia removal was not improved and the massive inoculation was even followed by a nitrification breakdown from day 9 to 18. The nitrification was remained stable in control BAF operated under the same conditions. Fluorescent in situ hybridization （FISH） with rRNA-targeted probes and cultivable method revealed that Lutimonas sp. H10 almost disappeared from the bioaugomented BAF within 3 d, and this was mainly due to the infection of a specific phage as revealed by flask experiment, plaque assay and transmission electron observation. Analyses of 16S rRNA gene libraries showed that bacterial groups from two reactors evolved differently and an overgrowth of protozoa was observed in the bioaugmented BAF. Therefore, phage infection and poor biofilm forming ability of the inoculated strain are the main reasons for bioaugmentation failure. In addition, grazing by protozoa of the bacteria might be the reason for the nitrification breakdown in bioaugmented BAF during day 9-18.展开更多
文摘The paper refers to disproportionation of HIO and NaIO in aqueous media, in static and dynamic systems. The results of calculations, realized according to GATES/GEB principles, with use of an iterative computer program, are presented graphically. An example of the computer program with all physicochemical knowledge involved in the related algorithm is attached herewith.
基金supported by the National Research Foundation of Korea(NRF)funded by the Ministry of Science and ICT(grant no.2018R1A5A1025208 and 2019R1A2C3005530).
文摘Obtaining sulfate-based materials with large birefringence is of great challenge due to the weak polarizability anisotropy of the constituting spherical SO_(4)^(2-)tetrahedron.Here,we have implemented a polyhedron of stereoactive lone pair cations,IO_(3)-to the system to tackle the issue.Centimetre-sized single crystals of an alkali metal sulfate iodate,K_(2)SO_(4)·HIO_(3),have been readily grown by an accessible solution-evaporation method.Optical measurements on K_(2)SO_(4)·HIO_(3)single crystals reveal that the reported material exhibits a 70-fold increase in birefringence(ca.0.14 at 589.3 nm)compared to that of the singular sulfate,K_(2)SO_(4).In addition,K_(2)SO_(4)·HIO_(3)exhibits a blue-shifted UV cutoff edge of 275 nm,25 nm shorter than that ofα-HIO_(3),highlighting the key role of the SO_(4)^(2-)tetrahedron in broadening the transmittance window.
基金supported by the Hi-Tech Research and Development Program (863) of China (No.2006AA100305)
文摘Two biological aerated filters （BAF） were setup for ammonia removal treatment of the circulation water in a marine aquaculture. One of the BAFs was bioaugmented with a heterotrophic nitrifying bacterium, Lutimonas sp. H10, where the ammonia removal was not improved and the massive inoculation was even followed by a nitrification breakdown from day 9 to 18. The nitrification was remained stable in control BAF operated under the same conditions. Fluorescent in situ hybridization （FISH） with rRNA-targeted probes and cultivable method revealed that Lutimonas sp. H10 almost disappeared from the bioaugomented BAF within 3 d, and this was mainly due to the infection of a specific phage as revealed by flask experiment, plaque assay and transmission electron observation. Analyses of 16S rRNA gene libraries showed that bacterial groups from two reactors evolved differently and an overgrowth of protozoa was observed in the bioaugmented BAF. Therefore, phage infection and poor biofilm forming ability of the inoculated strain are the main reasons for bioaugmentation failure. In addition, grazing by protozoa of the bacteria might be the reason for the nitrification breakdown in bioaugmented BAF during day 9-18.
