With the rapid development of terahertz technologies,basic research and applications of terahertz waves in biomedicine have attracted increasing attention.The rotation and vibrational energy levels of biomacromolecule...With the rapid development of terahertz technologies,basic research and applications of terahertz waves in biomedicine have attracted increasing attention.The rotation and vibrational energy levels of biomacromolecules fall in the energy range of terahertz waves;thus,terahertz waves might interact with biomacromolecules.Therefore,terahertz waves have been widely applied to explore features of the terahertz spectrum of biomacromolecules.However,the effects of terahertz waves on biomacromolecules are largely unexplored.Although some progress has been reported,there are still numerous technical barriers to clarifying the relation between terahertz waves and biomacromolecules and to realizing the accurate regulation of biological macromolecules by terahertz waves.Therefore,further investigations should be conducted in the future.In this paper,we reviewed terahertz waves and their biomedical research advantages,applications of terahertz waves on biomacromolecules and the effects of terahertz waves on biomacromolecules.These findings will provide novel ideas and methods for the research and application of terahertz waves in the biomedical field.展开更多
Anthropogenic activities are regarded as the main sources of heavy metal pollution,yet few studies have investigated the effects of land-use setting on heavy metal accumulation in riverine sediments.Based on both tota...Anthropogenic activities are regarded as the main sources of heavy metal pollution,yet few studies have investigated the effects of land-use setting on heavy metal accumulation in riverine sediments.Based on both total contents and geochemical fractions,heavy metal pollution,risk and toxicity were determined in riverine sediment cores from different land-use areas(mountain area-MA,farm area-FA,city area-CA,and industrial area-LA)of the Yang River Basin in North China.The results showed that FA had higher contents of riverine sedimentary Cu;CA had higher contents of Cd;LA.had higher contents of both Cd and Zn.Most riverine sediments from FA and IA were contaminated with the investigated metals,although these concentrations were evaluated to have low potential ecological risk and no toxicity to benthic organisms.However,a high proportion of Cd in the B1 fraction of riverine sediments in IA indicating high risk should receive more attention.The B1 fraction largely determined the contamination,risk and toxicity levels associated with heavy metals in the riverine sediments of the Yang River Basin.展开更多
文摘With the rapid development of terahertz technologies,basic research and applications of terahertz waves in biomedicine have attracted increasing attention.The rotation and vibrational energy levels of biomacromolecules fall in the energy range of terahertz waves;thus,terahertz waves might interact with biomacromolecules.Therefore,terahertz waves have been widely applied to explore features of the terahertz spectrum of biomacromolecules.However,the effects of terahertz waves on biomacromolecules are largely unexplored.Although some progress has been reported,there are still numerous technical barriers to clarifying the relation between terahertz waves and biomacromolecules and to realizing the accurate regulation of biological macromolecules by terahertz waves.Therefore,further investigations should be conducted in the future.In this paper,we reviewed terahertz waves and their biomedical research advantages,applications of terahertz waves on biomacromolecules and the effects of terahertz waves on biomacromolecules.These findings will provide novel ideas and methods for the research and application of terahertz waves in the biomedical field.
基金This research was supported by the Youth Innovation Promotion Association CAS(No.2017059)the National Natural Science Foundation of China(Nos.41877368 and 41701546).
文摘Anthropogenic activities are regarded as the main sources of heavy metal pollution,yet few studies have investigated the effects of land-use setting on heavy metal accumulation in riverine sediments.Based on both total contents and geochemical fractions,heavy metal pollution,risk and toxicity were determined in riverine sediment cores from different land-use areas(mountain area-MA,farm area-FA,city area-CA,and industrial area-LA)of the Yang River Basin in North China.The results showed that FA had higher contents of riverine sedimentary Cu;CA had higher contents of Cd;LA.had higher contents of both Cd and Zn.Most riverine sediments from FA and IA were contaminated with the investigated metals,although these concentrations were evaluated to have low potential ecological risk and no toxicity to benthic organisms.However,a high proportion of Cd in the B1 fraction of riverine sediments in IA indicating high risk should receive more attention.The B1 fraction largely determined the contamination,risk and toxicity levels associated with heavy metals in the riverine sediments of the Yang River Basin.
