The sterilization of the simulated unearthed silk fabrics using an atmospheric pressure plasma jet（APPJ） system employing Ar/O2 or He/O2 plasma to inactivate the mycete attached on the silk fabrics is reported. The ...The sterilization of the simulated unearthed silk fabrics using an atmospheric pressure plasma jet（APPJ） system employing Ar/O2 or He/O2 plasma to inactivate the mycete attached on the silk fabrics is reported. The effects of the APPJ characteristics（particularly the gas type and discharge power） on the fabric strength, physical-chemical structures,and sterilizing efficiency were investigated. Experimental results showed that the Ar/O2 APPJ plasma can inactivate the mycete completely within 4.0 min under a discharge power of 50.0 W. Such an APPJ treatment had negligible impact on the mechanical strength of the fabric and the surface chemical characteristics. Moreover, the Ar ions, O and OH radicals were shown to play important roles on the sterilization of the mycete attached on the unearthed silk fabrics.展开更多
Electrolyzing seawater is a promising solution to produce hydrogen,which is hindered by low-efficiency oxygen evolution reaction(OER)and noxious chloride chemistry.Herein,the Fe-Co_(2)P/CeO_(2)heterostructure nanoshee...Electrolyzing seawater is a promising solution to produce hydrogen,which is hindered by low-efficiency oxygen evolution reaction(OER)and noxious chloride chemistry.Herein,the Fe-Co_(2)P/CeO_(2)heterostructure nanosheet arrays are developed to achieve energy-saving and chlorine-free hydrogen generation by coupling hydrogen evolution reaction(HER)with hydrazine oxidation reaction(HzOR)in seawater.The Fe-Co_(2)P/CeO_(2)realizes current densities of 10 and 400 mA·cm^(-2)at 52 and204 mV for HER.The anode potential is significantly decreased after replacing OER with HzOR.Theoretical calculations display that the electronic structure of Fe-Co_(2)P can be regulated after coupling CeO_(2),which lowers the water dissociation barrier and optimizes hydrogen adsorption-free energy,thus boosting catalytic kinetics.Significantly,the hybrid seawater electrolyzer produces hydrogen at ultralow cell voltages,greatly reducing traditional water electrolysis voltages and avoiding hazardous chlorine chemistry.This study provides an avenue to exploit advanced catalysts for acquiring hydrogen with energy-efficiency and chlorine-free from abundant ocean.展开更多
The radio frequency identification(RFID)technology has been widely used so far in industrial and commercial applications.To develop the RFID tags that support elliptic curve cryptography(ECC),we propose a scalable and...The radio frequency identification(RFID)technology has been widely used so far in industrial and commercial applications.To develop the RFID tags that support elliptic curve cryptography(ECC),we propose a scalable and mutual authentication protocol based on ECC.We also suggest a tag privacy model that provides adversaries exhibiting strong abilities to attack a tag’s privacy.We prove that the proposed protocol preserves privacy under the privacy model and that it meets general security requirements.Compared with other recent ECCbased RFID authentication protocols,our protocol provides tag privacy and performs the best under comprehensive evaluation of tag privacy,tag computation cost,and communications cost.展开更多
基金Project supported by the National Natural Science Foundation of China(Grant Nos.11665005,11505032,11547139,51672249,and 11565003)the Zhejiang Natural Science Foundation of China(Grant No.LY16A050002)+3 种基金the Natural Science Foundation of Jiangxi Province,China(Grant Nos.20161BAB211026,20171ACB21049,and 20171BAB211012)the Science and Technology Project of Jiangxi Provincial Department of Education,China(Grant No.GJJ150981)the Program for Innovative Research Team of Zhejiang Sci-Tech University,Chinathe Opening Foundation of Insititue of Textile Technology,Wuhan Texitle Universitiy,China(Grant No.GCZX201702)
文摘The sterilization of the simulated unearthed silk fabrics using an atmospheric pressure plasma jet（APPJ） system employing Ar/O2 or He/O2 plasma to inactivate the mycete attached on the silk fabrics is reported. The effects of the APPJ characteristics（particularly the gas type and discharge power） on the fabric strength, physical-chemical structures,and sterilizing efficiency were investigated. Experimental results showed that the Ar/O2 APPJ plasma can inactivate the mycete completely within 4.0 min under a discharge power of 50.0 W. Such an APPJ treatment had negligible impact on the mechanical strength of the fabric and the surface chemical characteristics. Moreover, the Ar ions, O and OH radicals were shown to play important roles on the sterilization of the mycete attached on the unearthed silk fabrics.
基金financially supported by the National Natural Science Foundation of China(No.22302103)the Natural Science Foundation of Jiangsu Province(No.BK20230619)+1 种基金the Natural Science Foundation of Jiangsu Higher Education Institutions of China(No.23KJB540003)the Science Research Program of Nantong University(No.03083110)。
文摘Electrolyzing seawater is a promising solution to produce hydrogen,which is hindered by low-efficiency oxygen evolution reaction(OER)and noxious chloride chemistry.Herein,the Fe-Co_(2)P/CeO_(2)heterostructure nanosheet arrays are developed to achieve energy-saving and chlorine-free hydrogen generation by coupling hydrogen evolution reaction(HER)with hydrazine oxidation reaction(HzOR)in seawater.The Fe-Co_(2)P/CeO_(2)realizes current densities of 10 and 400 mA·cm^(-2)at 52 and204 mV for HER.The anode potential is significantly decreased after replacing OER with HzOR.Theoretical calculations display that the electronic structure of Fe-Co_(2)P can be regulated after coupling CeO_(2),which lowers the water dissociation barrier and optimizes hydrogen adsorption-free energy,thus boosting catalytic kinetics.Significantly,the hybrid seawater electrolyzer produces hydrogen at ultralow cell voltages,greatly reducing traditional water electrolysis voltages and avoiding hazardous chlorine chemistry.This study provides an avenue to exploit advanced catalysts for acquiring hydrogen with energy-efficiency and chlorine-free from abundant ocean.
基金partially supported by the National Natural Science Foundation of China under Grant No.61370203the China Postdoctoral Science Foundation under Grant No.2016M602675the Foundation of the Central Universities in China under Grant No.ZYGX2016J123。
文摘The radio frequency identification(RFID)technology has been widely used so far in industrial and commercial applications.To develop the RFID tags that support elliptic curve cryptography(ECC),we propose a scalable and mutual authentication protocol based on ECC.We also suggest a tag privacy model that provides adversaries exhibiting strong abilities to attack a tag’s privacy.We prove that the proposed protocol preserves privacy under the privacy model and that it meets general security requirements.Compared with other recent ECCbased RFID authentication protocols,our protocol provides tag privacy and performs the best under comprehensive evaluation of tag privacy,tag computation cost,and communications cost.
