Carbonbased aerogels derived from biomass chitosan are encountering a flourishing moment in electromagnetic protection on account of lightweight,controllable fabrication and versatility.Nevertheless,developing a facil...Carbonbased aerogels derived from biomass chitosan are encountering a flourishing moment in electromagnetic protection on account of lightweight,controllable fabrication and versatility.Nevertheless,developing a facile construction method of component design with carbon-based aerogels for high-efficiency electromagnetic wave absorption(EWA)materials with a broad effective absorption bandwidth(EAB)and strong absorption yet hits some snags.Herein,the nitrogen-doped magnetic-dielectric-carbon aerogel was obtained via ice template method followed by carbonization treatment,homogeneous and abundant nickel(Ni)and manganese oxide(MnO)particles in situ grew on the carbon aerogels.Thanks to the optimization of impedance matching of dielectric/magnetic components to carbon aerogels,the nitrogen-doped magnetic-dielectric-carbon aerogel(Ni/MnO-CA)suggests a praiseworthy EWA performance,with an ultra-wide EAB of 7.36 GHz and a minimum reflection loss(RLmin)of−64.09 dB,while achieving a specific reflection loss of−253.32 dB mm−1.Furthermore,the aerogel reveals excellent radar stealth,infrared stealth,and thermal management capabilities.Hence,the high-performance,easy fabricated and multifunctional nickel/manganese oxide/carbon aerogels have broad application aspects for electromagnetic protection,electronic devices and aerospace.展开更多
In recent years,the World Health Organization has proposed the concept that only intes‐tinal health can lead to longevity.It can be seen that gut microbiota plays an important role in maintaining human health,and gut...In recent years,the World Health Organization has proposed the concept that only intes‐tinal health can lead to longevity.It can be seen that gut microbiota plays an important role in maintaining human health,and gut microbiota has become a hot topic in medical research.With the change of Chinese residents'lifestyle,the incidence rate of diabetes is increasing rapidly.Research shows that the incidence of diabetes is closely related to intestinal flora imbalance.Traditional Chinese medicine can reduce blood sugar and improve clinical symptoms by regulating intestinal flora.Based on the theory of tradi‐tional Chinese medicine,this paper discusses the etiology and pathogenesis of intestinal flora imbalance,and provides a theoretical basis for traditional Chinese medicine to regu‐late intestinal flora to prevent and treat diabetes.Intestinal flora is a complex ecosystem,which plays an important role in maintaining human health.The imbalance of intestinal flora may lead to the occurrence of diabetes.The dynamic balance of gut microbiota is closely related to the kidneys,spleen,liver,and lungs.Traditional Chinese medicine monomer and compound can prevent and cure diabetes by regulating intestinal flora.展开更多
基金the National Natural Science Foundation of China(No.21902085 and 52172213)Natural Science and Development Foundation of Shenzhen(JCYJ20190807093205660)Postdoctoral Innovation Project of Shandong Province(SDCX-ZG-202202015).
文摘Carbonbased aerogels derived from biomass chitosan are encountering a flourishing moment in electromagnetic protection on account of lightweight,controllable fabrication and versatility.Nevertheless,developing a facile construction method of component design with carbon-based aerogels for high-efficiency electromagnetic wave absorption(EWA)materials with a broad effective absorption bandwidth(EAB)and strong absorption yet hits some snags.Herein,the nitrogen-doped magnetic-dielectric-carbon aerogel was obtained via ice template method followed by carbonization treatment,homogeneous and abundant nickel(Ni)and manganese oxide(MnO)particles in situ grew on the carbon aerogels.Thanks to the optimization of impedance matching of dielectric/magnetic components to carbon aerogels,the nitrogen-doped magnetic-dielectric-carbon aerogel(Ni/MnO-CA)suggests a praiseworthy EWA performance,with an ultra-wide EAB of 7.36 GHz and a minimum reflection loss(RLmin)of−64.09 dB,while achieving a specific reflection loss of−253.32 dB mm−1.Furthermore,the aerogel reveals excellent radar stealth,infrared stealth,and thermal management capabilities.Hence,the high-performance,easy fabricated and multifunctional nickel/manganese oxide/carbon aerogels have broad application aspects for electromagnetic protection,electronic devices and aerospace.
文摘In recent years,the World Health Organization has proposed the concept that only intes‐tinal health can lead to longevity.It can be seen that gut microbiota plays an important role in maintaining human health,and gut microbiota has become a hot topic in medical research.With the change of Chinese residents'lifestyle,the incidence rate of diabetes is increasing rapidly.Research shows that the incidence of diabetes is closely related to intestinal flora imbalance.Traditional Chinese medicine can reduce blood sugar and improve clinical symptoms by regulating intestinal flora.Based on the theory of tradi‐tional Chinese medicine,this paper discusses the etiology and pathogenesis of intestinal flora imbalance,and provides a theoretical basis for traditional Chinese medicine to regu‐late intestinal flora to prevent and treat diabetes.Intestinal flora is a complex ecosystem,which plays an important role in maintaining human health.The imbalance of intestinal flora may lead to the occurrence of diabetes.The dynamic balance of gut microbiota is closely related to the kidneys,spleen,liver,and lungs.Traditional Chinese medicine monomer and compound can prevent and cure diabetes by regulating intestinal flora.
