Abstract: A high-pressure gas filling and unloading system has a high-pressure gas pipeline for connecting to a gas filling station, a displacement gas pipeline for gas displacement, a plurality of double-channel rotating joints provided in said high-pressure gas pipeline and configured to be rotatable under pressure, and a filling and unloading joint provided at a free end of said high-pressure gas pipeline and comprising a control mechanism. The filling and unloading joint is configured to form a displacement working channel or a filling and unloading working channel therein through the control mechanism. The control mechanism is configured to alternately open the displacement working channel and the filling and unloading working channel, so that the displacement working channel is in communication with the displacement gas pipeline for gas displacement, or the filling and unloading working channel is in communication with the high-pressure gas pipeline for filling and unloading of high-pressure gas.

Abstract: A high-pressure gas filling and unloading system has a high-pressure gas pipeline for connecting to a gas filling station, a displacement gas pipeline for gas displacement, a plurality of double-channel rotating joints provided in said high-pressure gas pipeline and configured to be rotatable under pressure, and a filling and unloading joint provided at a free end of said high-pressure gas pipeline and comprising a control mechanism. The filling and unloading joint is configured to form a displacement working channel or a filling and unloading working channel therein through the control mechanism. The control mechanism is configured to alternately open the displacement working channel and the filling and unloading working channel, so that the displacement working channel is in communication with the displacement gas pipeline for gas displacement, or the filling and unloading working channel is in communication with the high-pressure gas pipeline for filling and unloading of high-pressure gas.

Abstract: A method and system for detecting structural performance of fire retardant disc includes the steps of obtaining passage structural information characterizing a structural feature of each passage in a fire retardant disc to be detected, analyzing said passage structural information and measuring a key feature size of each passage, statistically analyzing feature size distribution of each passage according to said key feature size, and determining a structural uniformity state of said fire retardant disc to be detected based on statistical result. The method is able to overcome the disadvantage of manual detection in the structural performance of the fire retardant disc, and effectively detect and assess the structural performance of the fire retardant disc in different use conditions.

Abstract: A hydrogen leakage detecting material, and a preparation method therefor and the use thereof are provided. The hydrogen leakage detecting material has a color-changing substrate and an active component. The color-changing substrate is hexagonal-phase tungsten trioxide having a microstructure of a nanorod bundle formed by multiple nanorods, and the active component is noble metal nanoparticles. A starting reduction temperature of the hydrogen leakage detecting material on hydrogen is less than or equal to 100° C. The hydrogen leakage detecting material has a relatively high sensitivity to hydrogen under different conditions, and has significant color change and a shorter color change response time.

Abstract: There is described herein a bilayer nanovesicle comprising porphyrin-phospholipid conjugate and a chelator-fatty acid conjugate; wherein the chelator-fatty acid conjugate comprises an aminopolycarboxylic acid conjugated to a single chain fatty acid; and the porphyrin-phospholipid conjugate comprises one porphyrin, porphyrin derivative or porphyrin analog covalently attached to a lipid side chain, preferably at the sn-1 or the sn-2 position, of one phospholipid.

Abstract: A composite structure comprising a first layer positioned adjacent to a second layer is provided. The first layer contains a polymer composition and the second layer contains a resinous material. The polymer composition includes a polyarylene sulfide and a bifunctional polymer that contains an epoxide functional group and a (meth)acrylate functional group. The resinous material includes a thermoset resin.

Abstract: A method for collaborative optimization control method for organic nitrogen and inorganic nitrogen in a denitrification process is provided. The method includes: establishing ASM-mDON-DIN models for simultaneous simulation of microbial dissolved organic nitrogen (mDON) and inorganic nitrogen (DIN) in denitrification processes; and selecting a corresponding ASM-mDON-DIN model according to a set carbon/nitrogen ratio to collaboratively optimize the concentration values of mDON and DIN in the effluent in the denitrification process, to obtain best process operation parameter values.

Abstract: A method for collaborative optimization control method for organic nitrogen and inorganic nitrogen in a denitrification process is provided. The method includes: establishing ASM-mDON-DIN models for simultaneous simulation of microbial dissolved organic nitrogen (mDON) and inorganic nitrogen (DIN) in denitrification processes; and selecting a corresponding ASM-mDON-DIN model according to a set carbon/nitrogen ratio to collaboratively optimize the concentration values of mDON and DIN in the effluent in the denitrification process, to obtain best process operation parameter values.

Abstract: A method of assessing risk of chronic post-surgical pain (CPSP) in a subject based on genetic factors, non-genetic factors, or a combination thereof. Genetic factors include a genetic profile comprising a combination of single nucleotide polymorphisms (SNPs) in one or more of the specific genes disclosed herein. Non-genetic factors include psychological factors and psychophysical factors. Any of the methods disclosed herein may further comprise applying to the subject a pain management approach based on the subject's risk of developing CPSP.

Abstract: A method of measuring concentration of dissolved organic nitrogen in sewage. The method includes: filtering a sewage sample using a filter membrane; measuring the concentrations of total dissolved nitrogen (TDN), ammonia nitrogen (NH4+), and nitric nitrogen (NO3?) in the sewage sample, respectively designated as CTDN(I), CNH4+(I) and CNO3?(I); calculating the ratios of (CNH4+(I)+CNO3?(I))/CTDN(I) and CNO3?(I)/CNH4+(I), and according to the ratios, calculating the concentration of dissolved organic nitrogen (DON) in the sewage sample.

Abstract: A method of measuring concentration of dissolved organic nitrogen in sewage. The method includes: filtering a sewage sample using a filter membrane; measuring the concentrations of total dissolved nitrogen (TDN), ammonia nitrogen (NH4+), and nitric nitrogen (NO3?) in the sewage sample, respectively designated as CTDN(I), CNH4+(I) and CNO3?(I); calculating the ratios of (CNH4+(I)+CNO3?(I))/CTDN(I) and CNO3?(I)/CNH4+(I), and according to the ratios, calculating the concentration of dissolved organic nitrogen (DON) in the sewage sample.

Abstract: A device for supervising biofilm culturing, the device including: a fixed seat including an upper end; a supervision chamber; two ultrasonic sensing probes; a first mounting chamber; a second mounting chamber disposed between the fixed seat and the supervision chamber; an ultrasonic generator; an oscilloscope; and a controller. The first and second mounting chambers are disposed at two opposite ends of the supervision chamber, respectively. The two ultrasonic sensing probes are disposed in the first and second mounting chambers, respectively. The second mounting chamber is connected to the upper end of the fixed seat. The two ultrasonic sensing probes each are respectively connected to the ultrasonic generator, the oscilloscope, and the controller successively.

Abstract: A method of measuring concentration of dissolved organic nitrogen in sewage. The method includes: filtering a sewage sample using a filter membrane; measuring the concentrations of total dissolved nitrogen (TDN), ammonia nitrogen (NH4+), and nitric nitrogen (NO3?) in the sewage sample, respectively designated as CTDN(I), CNH4+(I) and CNO3?(I); calculating the ratios of (CNH4+(I)+CNO3?(I))/CTDN(I) and CNO3?(I)/CNH4+(I), and according to the ratios, calculating the concentration of dissolved organic nitrogen (DON) in the sewage sample.

Abstract: A device for supervising biofilm culturing, the device including: a fixed seat including an upper end; a supervision chamber; two ultrasonic sensing probes; a first mounting chamber; a second mounting chamber disposed between the fixed seat and the supervision chamber; an ultrasonic generator; an oscilloscope; and a controller. The first and second mounting chambers are disposed at two opposite ends of the supervision chamber, respectively. The two ultrasonic sensing probes are disposed in the first and second mounting chambers, respectively. The second mounting chamber is connected to the upper end of the fixed seat. The two ultrasonic sensing probes each are respectively connected to the ultrasonic generator, the oscilloscope, and the controller successively.

Abstract: A method for degrading artificial sweeteners from sewage, the method including: 1) introducing sewage to a secondary sedimentation tank and precipitating sediments; 2) collecting a supernatant from the secondary sedimentation tank, adding a NaOH solution or a perchloric acid solution to regulate the pH; adding an H2O2 solution to the supernatant to adjust a ratio of a molar concentration of H2O2 to a molar concentration of the sweetener in the resulting mixed solution to be between 1:1 and 30:1; transferring the resulting mixed solution to a photoreactor, irradiating the mixed solution by ultraviolet light, and stirring the mixed solution for between 5 and 30 min; and adding a 1.5% w/w aqueous NaNO2 solution to the mixed solution; and 3) collecting and analyzing an effluent obtained from 2), contacting the effluent with ClO2 for reaction in a disinfecting tank, and discharging the product.

Abstract: A method for degrading artificial sweeteners from sewage, the method including: 1) introducing sewage to a secondary sedimentation tank and precipitating sediments; 2) collecting a supernatant from the secondary sedimentation tank, adding a NaOH solution or a perchloric acid solution to regulate the pH; adding an H2O2 solution to the supernatant to adjust a ratio of a molar concentration of H2O2 to a molar concentration of the sweetener in the resulting mixed solution to be between 1:1 and 30:1; transferring the resulting mixed solution to a photoreactor, irradiating the mixed solution by ultraviolet light, and stirring the mixed solution for between 5 and 30 min; and adding a 1.5% w/w aqueous NaNO2 solution to the mixed solution; and 3) collecting and analyzing an effluent obtained from 2), contacting the effluent with ClO2 for reaction in a disinfecting tank, and discharging the product.

Abstract: A method for preparing a bacterial agent for removing ammonia-nitrogen, including: 1) activating a mixed microbial preparation including heterotrophic nitrification bacteria and aerobic denitrification bacteria; 2) inoculating the microbial preparation including heterotrophic nitrification bacteria and the aerobic denitrification bacteria to a membrane region including a double-layered filler; 3) introducing a culture solution of the microbial preparation to the membrane region from one side of the membrane region at a certain pressure and a certain flow rate to cultivate bacteria and discharging metabolites produced by the microbial preparation from the other side of the membrane region; 4) centrifuging a bacterial liquid obtained from cultivation to yield a concentrated bacterial suspension; and 5) adding a protecting agent to the concentrated bacterial suspension, uniformly dry spraying a resulting mixture to a sterilized carrier to yield a bacterial agent, and sealing the bacterial agent for storage.

Abstract: A Fenton reactor, including a body. The body includes: from the bottom up, a sewage introduction zone, a solid acid reaction zone, tubular ceramic membranes, and a water generation zone. A water feed pump, a first chemical feed pump, and a second chemical feed pump are disposed below the body. The outlets of the water feed pump, the first chemical feed pump, and the second chemical feed pump communicate with the water inlet of the body. The water feed pump, the first chemical feed pump, and the second chemical feed pump are provided with flow meters, respectively. The solid acid reaction zone is disposed above the sewage introduction zone, and the tubular ceramic membranes are disposed in the center of the solid acid reaction zone and separate the solid acid reaction zone to form a cavity. The water generation zone is disposed above the solid acid reaction zone.

Abstract: A coupling bioreactor in the form of a tower type seal structure filled with a suspended carrier. A water inlet pipe, an air inlet pipe, and a first microporous aerator are arranged at the bottom of the coupling reactor. The water inlet pipe is connected to a water distributor. The air inlet pipe is connected to the first microporous aerator. A gas inlet pipe and a second microporous aerator are arranged at the middle part of the coupling bioreactor and are connected with each other. An annular overflow weir is arranged at the upper part of the coupling bioreactor and is connected to a water outlet pipe. A gas outlet pipe is arranged at the top of the coupling bioreactor. The ratio of the height to the diameter of the coupling bioreactor is between 3 and 10.