The uncontrolled release of antibiotics into the environment would be extremely harmful to human health and ecosystems.Therefore,it is in urgent need to monitor the environment and promote the detection and degradatio...The uncontrolled release of antibiotics into the environment would be extremely harmful to human health and ecosystems.Therefore,it is in urgent need to monitor the environment and promote the detection and degradation of antibiotics to the relatively harmless by-products to a feasible extent.Graphitic carbon nitride(g-C_(3)N_(4))is a non-metallic n-type semiconductor that can be used for the antibiotic detection and degradation due to its easy synthesis process,excellent chemical stability and unique optical properties.Unfortunately,the utilization of visible light,electron-hole recombination and electron conductivity have hindered its potential applications in the fields of photocatalytic degradation and electrochemical detection.Although previous publications have highlighted the diverse modification methods for the g-C_(3)N_(4)-based materials,the underlying structure-performance relationships of g-C_(3)N_(4),especially for the detection and degradation of antibiotics,remains to be further explored.In view of this,the current review centered on the recent progress in the modification techniques of g-C_(3)N_(4),the detection and degradation of antibiotics using the g-C_(3)N_(4)-based materials,as well as the potential antibiotic degradation mechanisms of the g-C_(3)N_(4)-based materials.Additionally,the underlying applications of the g-C_(3)N_(4)-based materials for antibiotic detection and degradation were also prospected.This review would provide a valuable research foundation and the up-to-date information for the g-C_(3)N_(4)-based materials to combat antibiotic pollution in the environment.展开更多
A novel solution-are discharge surface modification technique has been introduced in this paper,ln this modification technique, the speed of mass transport in surface and diffusion Layer is much higher than that of ot...A novel solution-are discharge surface modification technique has been introduced in this paper,ln this modification technique, the speed of mass transport in surface and diffusion Layer is much higher than that of other ways, such as ion implantation, PVD, CVD, PCVD, glow discharge plasma treatment, etc. The solution-arc discharge plasma belongs to a plasma in high air pressure. Its cathode electric field, electric charge density and current density are much larger than those of Low temperature plasma. The voltage-current characteristic has been measured. Mechanical and electrochemical properties of some steel treated with solution-arc discharge have been studied. As to the mechanism of this technique, an analysis has been given.展开更多
Background Judkins catheter is widely used in recent years, for clinical angiography and intervention of most normal coronary arteries, but still incapable to deal with the problems caused by difficult coronary artery...Background Judkins catheter is widely used in recent years, for clinical angiography and intervention of most normal coronary arteries, but still incapable to deal with the problems caused by difficult coronary artery （DCA）. DCA may influence the procedure of diagnosis and intervention of ischemic heart disease （IHD）. To cope with different subtypes of DCA, catheters like Amplatz, EBU, Leya, etc. were born at that moment, but these stan- dard catheters are used just in special cases and have so many sequences that a local hospital may not be able to keep all of them available routinely at any time. To overcome this problem, some centers perform angiography and intervention using modified catheters based on their own condition and have obtained some experiences. Catheter modification techniques used in these years are reviewed, and are stated respectively based on dealing with different subtypes of DCA to provide practical guidance for clinical diagnosis and intervention for IHD patients having DCA.展开更多
AIM: To prepare a new-type soft intraocular lens (IOL) that silicone intraocular lenses (IOLs) were modified by surface modification technique to assess IOLs biocompatibility. METHODS: With the technique of ion beam c...AIM: To prepare a new-type soft intraocular lens (IOL) that silicone intraocular lenses (IOLs) were modified by surface modification technique to assess IOLs biocompatibility. METHODS: With the technique of ion beam combined with low temperature and low pressure plasma, the surface characteristics of the IOLs including physical and optical properties were determined by the instruments of IOLs resolution, UV/VIS scanning spectrophotometer, contact angle measurement system, electron spectroscopy for chemical analysis (ESCA) and scanning electron microscope (SEM). RESULTS: The color of titanium (Ti) modified IOLs was light yellow and that of titanium nitride (TiN) modified IOLs was light brown. The absorptive degree of ultraviolet rays and the hydrophilicity of the surfaces of modified IOLs were increased, and appeared suitable chemical compositions. The resolution of unmodified and modified IOLs reached normal standard. The surfaces of unmodified and Ti-modified IOLs appeared uniform. The surfaces of TIN-modified IOLs presented fine porcelain structure. CONCLUSION: The optical properties of all IOLs and the surface morphology of the modified IOLs were not affected by modification processes. The surface properties of the modified IOLs were improved.展开更多
Hydrothermal fabrication of selectively doped（Ag＋＋ Pd3＋） advanced ZnO nanomaterial has been carried out under mild pressure temperature conditions（autogeneous; 150°C）.Gluconic acid has been used as a surfa...Hydrothermal fabrication of selectively doped（Ag＋＋ Pd3＋） advanced ZnO nanomaterial has been carried out under mild pressure temperature conditions（autogeneous; 150°C）.Gluconic acid has been used as a surface modifier to effectively control the particle size and morphology of these ZnO nanoparticles. The experimental parameters were tuned to achieve optimum conditions for the synthesis of selectively doped ZnO nanomaterials with an experimental duration of 4 hr. These selectively doped ZnO nanoparticles were characterized using powder X-ray diffraction（XRD）, Fourier transform infrared spectroscopy（FT-IR）, UV–Vis spectroscopy and scanning electron microscopy（SEM）. The solar driven photocatalytic studies have been carried out for organic dyes, i.e., Procion MX-5B dye,Cibacron Brilliant Yellow dye, Indigo Carmine dye, separately and all three mixed, by using gluconic acid modified selectively doped advanced ZnO nanomaterial. The influence of catalyst, its concentration and initial dye concentration resulted in the photocatalytic efficiency of 89% under daylight.展开更多
In this study,a Neural Network-Enhanced Gene Modification Optimization Technique was introduced for multiobjective energy resource management.Addressing the need for sustainable energy solutions,this technique integra...In this study,a Neural Network-Enhanced Gene Modification Optimization Technique was introduced for multiobjective energy resource management.Addressing the need for sustainable energy solutions,this technique integrated neural network models as fitness functions,representing an advancement in artificial intelligencedriven optimization.Data collected in the European Union covered greenhouse gas emissions,energy consumption by sources,energy imports,and Levelized Cost of Energy.Since different configurations of energy consumption by sources lead to varying greenhouse gas emissions,costs,and imports,neural network prediction models were used to project the effect of new energy combinations on these variables.The projections were then fed into the gene modification optimization process to identify optimal configurations.Over 28 generations,simulations demonstrated a 46 percent reduction in energy costs and a 9 percent decrease in emissions.Human bias and subjectivity were mitigated by automating parameter settings,enhancing the objectivity of results.Benchmarking against traditional methods,such as Euclidean Distance,validated the superior performance of this approach.Furthermore,the technique’s ability to visualize chromosomes and gene values offered clarity in optimization processes.These results suggest significant advancements in the energy sector and potential applications in other industries,contributing to the global effort to combat climate change.展开更多
Bleaching experiments on Chinese pottery fine grains were conducted under sunlight and laboratory light conditions. It is found that the thermoluminescence (TL) at high temperatures can be bleached significantly, but ...Bleaching experiments on Chinese pottery fine grains were conducted under sunlight and laboratory light conditions. It is found that the thermoluminescence (TL) at high temperatures can be bleached significantly, but no effects were observed on TL signals used for the pre-dose dating technique. It is concluded that the pre-dose dating technique can be applied to samples even after light exposures. Pottery samples of Tang Dynasty and New Stone Age were studied. Modifications to routine pre-dose dating technique are proposed with adding preheat procedures and using saturation exponential fitting for the sensitivity change data. The modified technique can extend the dating range to New Stone Age.展开更多
基金supported by the National Natural Science Foundation of China(Nos.42207266 and 32271609)2021 Harbin University of Commerce“Innovation Project”Support Plan(No.LH2022B011)+1 种基金the Special Funds from the Central Finance to Support the Development of Local Universities(No.YSL 037)the Foreign cooperation Foundation of Heilongjiang Academy of Sciences(No.HZ2022-02).
文摘The uncontrolled release of antibiotics into the environment would be extremely harmful to human health and ecosystems.Therefore,it is in urgent need to monitor the environment and promote the detection and degradation of antibiotics to the relatively harmless by-products to a feasible extent.Graphitic carbon nitride(g-C_(3)N_(4))is a non-metallic n-type semiconductor that can be used for the antibiotic detection and degradation due to its easy synthesis process,excellent chemical stability and unique optical properties.Unfortunately,the utilization of visible light,electron-hole recombination and electron conductivity have hindered its potential applications in the fields of photocatalytic degradation and electrochemical detection.Although previous publications have highlighted the diverse modification methods for the g-C_(3)N_(4)-based materials,the underlying structure-performance relationships of g-C_(3)N_(4),especially for the detection and degradation of antibiotics,remains to be further explored.In view of this,the current review centered on the recent progress in the modification techniques of g-C_(3)N_(4),the detection and degradation of antibiotics using the g-C_(3)N_(4)-based materials,as well as the potential antibiotic degradation mechanisms of the g-C_(3)N_(4)-based materials.Additionally,the underlying applications of the g-C_(3)N_(4)-based materials for antibiotic detection and degradation were also prospected.This review would provide a valuable research foundation and the up-to-date information for the g-C_(3)N_(4)-based materials to combat antibiotic pollution in the environment.
文摘A novel solution-are discharge surface modification technique has been introduced in this paper,ln this modification technique, the speed of mass transport in surface and diffusion Layer is much higher than that of other ways, such as ion implantation, PVD, CVD, PCVD, glow discharge plasma treatment, etc. The solution-arc discharge plasma belongs to a plasma in high air pressure. Its cathode electric field, electric charge density and current density are much larger than those of Low temperature plasma. The voltage-current characteristic has been measured. Mechanical and electrochemical properties of some steel treated with solution-arc discharge have been studied. As to the mechanism of this technique, an analysis has been given.
基金supported by National Natural Science Foundation of China(No.81641058)
文摘Background Judkins catheter is widely used in recent years, for clinical angiography and intervention of most normal coronary arteries, but still incapable to deal with the problems caused by difficult coronary artery （DCA）. DCA may influence the procedure of diagnosis and intervention of ischemic heart disease （IHD）. To cope with different subtypes of DCA, catheters like Amplatz, EBU, Leya, etc. were born at that moment, but these stan- dard catheters are used just in special cases and have so many sequences that a local hospital may not be able to keep all of them available routinely at any time. To overcome this problem, some centers perform angiography and intervention using modified catheters based on their own condition and have obtained some experiences. Catheter modification techniques used in these years are reviewed, and are stated respectively based on dealing with different subtypes of DCA to provide practical guidance for clinical diagnosis and intervention for IHD patients having DCA.
基金A Foundation for the Author of National Excellent Doctoral Dissertation of PR China(No.10021201)
文摘AIM: To prepare a new-type soft intraocular lens (IOL) that silicone intraocular lenses (IOLs) were modified by surface modification technique to assess IOLs biocompatibility. METHODS: With the technique of ion beam combined with low temperature and low pressure plasma, the surface characteristics of the IOLs including physical and optical properties were determined by the instruments of IOLs resolution, UV/VIS scanning spectrophotometer, contact angle measurement system, electron spectroscopy for chemical analysis (ESCA) and scanning electron microscope (SEM). RESULTS: The color of titanium (Ti) modified IOLs was light yellow and that of titanium nitride (TiN) modified IOLs was light brown. The absorptive degree of ultraviolet rays and the hydrophilicity of the surfaces of modified IOLs were increased, and appeared suitable chemical compositions. The resolution of unmodified and modified IOLs reached normal standard. The surfaces of unmodified and Ti-modified IOLs appeared uniform. The surfaces of TIN-modified IOLs presented fine porcelain structure. CONCLUSION: The optical properties of all IOLs and the surface morphology of the modified IOLs were not affected by modification processes. The surface properties of the modified IOLs were improved.
基金supported by University Grant Commission under University with Potential for excellence Programme (UPE), University of Mysore
文摘Hydrothermal fabrication of selectively doped（Ag＋＋ Pd3＋） advanced ZnO nanomaterial has been carried out under mild pressure temperature conditions（autogeneous; 150°C）.Gluconic acid has been used as a surface modifier to effectively control the particle size and morphology of these ZnO nanoparticles. The experimental parameters were tuned to achieve optimum conditions for the synthesis of selectively doped ZnO nanomaterials with an experimental duration of 4 hr. These selectively doped ZnO nanoparticles were characterized using powder X-ray diffraction（XRD）, Fourier transform infrared spectroscopy（FT-IR）, UV–Vis spectroscopy and scanning electron microscopy（SEM）. The solar driven photocatalytic studies have been carried out for organic dyes, i.e., Procion MX-5B dye,Cibacron Brilliant Yellow dye, Indigo Carmine dye, separately and all three mixed, by using gluconic acid modified selectively doped advanced ZnO nanomaterial. The influence of catalyst, its concentration and initial dye concentration resulted in the photocatalytic efficiency of 89% under daylight.
基金Open Access funding provided by Hungarian Electronic Information Services National Programme(EISZ)-Corvinus University of Budapest。
文摘In this study,a Neural Network-Enhanced Gene Modification Optimization Technique was introduced for multiobjective energy resource management.Addressing the need for sustainable energy solutions,this technique integrated neural network models as fitness functions,representing an advancement in artificial intelligencedriven optimization.Data collected in the European Union covered greenhouse gas emissions,energy consumption by sources,energy imports,and Levelized Cost of Energy.Since different configurations of energy consumption by sources lead to varying greenhouse gas emissions,costs,and imports,neural network prediction models were used to project the effect of new energy combinations on these variables.The projections were then fed into the gene modification optimization process to identify optimal configurations.Over 28 generations,simulations demonstrated a 46 percent reduction in energy costs and a 9 percent decrease in emissions.Human bias and subjectivity were mitigated by automating parameter settings,enhancing the objectivity of results.Benchmarking against traditional methods,such as Euclidean Distance,validated the superior performance of this approach.Furthermore,the technique’s ability to visualize chromosomes and gene values offered clarity in optimization processes.These results suggest significant advancements in the energy sector and potential applications in other industries,contributing to the global effort to combat climate change.
基金a grant to the first author from the Research Grant Council of the Hong Kong Special Administrative Region, China (Grant No. 7105/97P).
文摘Bleaching experiments on Chinese pottery fine grains were conducted under sunlight and laboratory light conditions. It is found that the thermoluminescence (TL) at high temperatures can be bleached significantly, but no effects were observed on TL signals used for the pre-dose dating technique. It is concluded that the pre-dose dating technique can be applied to samples even after light exposures. Pottery samples of Tang Dynasty and New Stone Age were studied. Modifications to routine pre-dose dating technique are proposed with adding preheat procedures and using saturation exponential fitting for the sensitivity change data. The modified technique can extend the dating range to New Stone Age.
