Pyrite is separated from other minerals mainly by fotation.However,the hydrophilicity of pyrite is afected by many factors,causing it to easily enter the concentrate and consequently reduce the quality of concentrate....Pyrite is separated from other minerals mainly by fotation.However,the hydrophilicity of pyrite is afected by many factors,causing it to easily enter the concentrate and consequently reduce the quality of concentrate.Highly efcient pyrite depressants can be selectively adsorbed on the surface of pyrite to improve its hydrophilicity,thereby increasing the fotation separation efciency.Understanding the fundamental inhibition mechanism of depressants on pyrite is a prerequisite to improve the fotation desulfurization efciency.The inhibition ability and mechanism of diferent types of pyrite depressants are reviewed in this manuscript.In recent years,molecular simulation has increasingly become a powerful tool to study the interaction between reagents and minerals,shedding new light on the adsorption mechanisms of reagents on mineral surfaces at the atomic and electronic levels.The properties of sulfde mineral and fotation reagents as well as the microscopic adsorption mechanistic studies of reagents on mineral surfaces based on quantum chemistry and molecular simulation are also reviewed.展开更多
Many people would like to purchase items using locationbased services to find the suitable stores in daily life. Although there are many online map search engines giving isolated Point-of-Interest as query results acc...Many people would like to purchase items using locationbased services to find the suitable stores in daily life. Although there are many online map search engines giving isolated Point-of-Interest as query results according to the correlation between isolated stores and the query, this interaction is difficult in meeting the shopping needs of people with disabilities, who would usually prefer shopping in one single location to avoid inconvenience in transportation. In this article, we propose a framework of map search service using Region-of-Interest (ROI) as the query result, which can greatly reduce users shopping distance among multiple stores. High order Voronoi diagram is used to reduce the time complexity of Region-of-Interests generation. Experimental results show that our method is both efficient and effective.展开更多
The dashboard is the most important part of the large inner decoration of cars;it should not only have enough strength and rigidity,but also have a harmonious body model which can unify the theme.Besides,it needs to r...The dashboard is the most important part of the large inner decoration of cars;it should not only have enough strength and rigidity,but also have a harmonious body model which can unify the theme.Besides,it needs to reach the goal of lightweight.In order to achieve these three goals,the car dashboard is made by engineering-plastics and adopts the technology of injection moulding.This paper introduces the keys of design and the advanced technology of large injection moulding for car dashboard.展开更多
Waste fried oil was studied to prepare three different types of detergent such as soap,liquid soap and soap powder via saponification process.The preparation conditions of soap base were optimized by orthogonal experi...Waste fried oil was studied to prepare three different types of detergent such as soap,liquid soap and soap powder via saponification process.The preparation conditions of soap base were optimized by orthogonal experiment.The specific preparation processes included waste fried oil treatment,orange peel extract preparation,saponification,demoulding and drying.Results showed that the optimal con-ditions for saponification were as follows:ratio of pure waste fried oil to coconut oil=6∶4,alkali liquor(NaOH)mass fraction 30%,saponification temperature 70℃,orange peel extract concentration 15%.The mature soap was then used to make liquid soap and soap powder by surfactant(sodium dodecylbenzene sulfonate,coconut diethanol amide)addition,followed by grinding.The prepared detergent conforms to the production standard of strong decontamination ability,possesses stable performance,is gentle to skin and non-toxic.展开更多
Although large amounts of engineered nanomaterials have been used for the arsenic removal, today there still remains several serious impediments to its further application, including consumption of expensive and pure ...Although large amounts of engineered nanomaterials have been used for the arsenic removal, today there still remains several serious impediments to its further application, including consumption of expensive and pure salts, and only application for the removal of inorganic arsenic. In this work, we developed an eco-economic and facile electrochemical method to synthesize iron porous coordination polymers （FePCPs） for the simultaneous removal of inorganic and organic arsenic from natural water.展开更多
基金supported by the following:“Foundation for University Key Teacher by Henan Province”(No.2020GGJS051)“Key Project of Science and Technology Research of Education Department of Henan Province”(No.20A440004)+2 种基金“The Henan Polytechnic University Science Fund for Distinguished Young Scholars”(No.J2021-1)“Foundation for University Key Teacher by Henan Polytechnic University”(No.2017XQG-12)“Henan Key Laboratory of Coal Green Conversion”(No.CGCF202009).
文摘Pyrite is separated from other minerals mainly by fotation.However,the hydrophilicity of pyrite is afected by many factors,causing it to easily enter the concentrate and consequently reduce the quality of concentrate.Highly efcient pyrite depressants can be selectively adsorbed on the surface of pyrite to improve its hydrophilicity,thereby increasing the fotation separation efciency.Understanding the fundamental inhibition mechanism of depressants on pyrite is a prerequisite to improve the fotation desulfurization efciency.The inhibition ability and mechanism of diferent types of pyrite depressants are reviewed in this manuscript.In recent years,molecular simulation has increasingly become a powerful tool to study the interaction between reagents and minerals,shedding new light on the adsorption mechanisms of reagents on mineral surfaces at the atomic and electronic levels.The properties of sulfde mineral and fotation reagents as well as the microscopic adsorption mechanistic studies of reagents on mineral surfaces based on quantum chemistry and molecular simulation are also reviewed.
文摘Many people would like to purchase items using locationbased services to find the suitable stores in daily life. Although there are many online map search engines giving isolated Point-of-Interest as query results according to the correlation between isolated stores and the query, this interaction is difficult in meeting the shopping needs of people with disabilities, who would usually prefer shopping in one single location to avoid inconvenience in transportation. In this article, we propose a framework of map search service using Region-of-Interest (ROI) as the query result, which can greatly reduce users shopping distance among multiple stores. High order Voronoi diagram is used to reduce the time complexity of Region-of-Interests generation. Experimental results show that our method is both efficient and effective.
文摘The dashboard is the most important part of the large inner decoration of cars;it should not only have enough strength and rigidity,but also have a harmonious body model which can unify the theme.Besides,it needs to reach the goal of lightweight.In order to achieve these three goals,the car dashboard is made by engineering-plastics and adopts the technology of injection moulding.This paper introduces the keys of design and the advanced technology of large injection moulding for car dashboard.
基金supported by the Foundation for University Key Teacher by Henan Province(grant No.2020GGJS051)the Research Fund of Henan Key Laboratory for Green and Efficient Mining&Comprehensive Utilization of Mineral Resources(Henan Polytechnic University)(grant No.KCF2213)+1 种基金College Students'Innovative Entrepreneurial Training Plan Program(grant No.202110460072,202210460063)the Henan Polytechnic University Science Fund for Distinguished Young Scholars(grant No.J2021-1).
文摘Waste fried oil was studied to prepare three different types of detergent such as soap,liquid soap and soap powder via saponification process.The preparation conditions of soap base were optimized by orthogonal experiment.The specific preparation processes included waste fried oil treatment,orange peel extract preparation,saponification,demoulding and drying.Results showed that the optimal con-ditions for saponification were as follows:ratio of pure waste fried oil to coconut oil=6∶4,alkali liquor(NaOH)mass fraction 30%,saponification temperature 70℃,orange peel extract concentration 15%.The mature soap was then used to make liquid soap and soap powder by surfactant(sodium dodecylbenzene sulfonate,coconut diethanol amide)addition,followed by grinding.The prepared detergent conforms to the production standard of strong decontamination ability,possesses stable performance,is gentle to skin and non-toxic.
基金the National Natural Science Foundation of China (Nos. 21575092 and 21622508) for financial support
文摘Although large amounts of engineered nanomaterials have been used for the arsenic removal, today there still remains several serious impediments to its further application, including consumption of expensive and pure salts, and only application for the removal of inorganic arsenic. In this work, we developed an eco-economic and facile electrochemical method to synthesize iron porous coordination polymers （FePCPs） for the simultaneous removal of inorganic and organic arsenic from natural water.
