Coded aperture imaging(CAI)is widely used as an energetic-particles telescope in high-energy astrophysics.A typical CAI system consists of a coded mask(CM),a position-sensitive detector,and reconstruction algorithms t...Coded aperture imaging(CAI)is widely used as an energetic-particles telescope in high-energy astrophysics.A typical CAI system consists of a coded mask(CM),a position-sensitive detector,and reconstruction algorithms that recover the source distributions from the measured projections.The imaging performance of CAI largely depends on the CM design,which governs the field-of-view(FOV),spatial resolution,sensitivity,and signalto-noise ratio(SNR).展开更多
Cordyceps militaris is a famous medicinal and edible fungus,whose polysaccharides are important biologically active substances.In recent years,the molecular structure and pharmacological functions of C.militaris polys...Cordyceps militaris is a famous medicinal and edible fungus,whose polysaccharides are important biologically active substances.In recent years,the molecular structure and pharmacological functions of C.militaris polysaccharides were fully studied.However,the potential mechanism of their pharmacological functions and their chemical modification have not been systematically elucidated.Moreover,the obtention and usage of C.militaris polysaccharides present several issues,including low polysaccharide yields and poor pharmacological functions in industrial production.This review presents the latest results on the pharmacological mechanism of C.militaris,including information on how to improve C.militaris industrial production through stabilization of the strain to prevent degeneration and chemical modifications of its polysaccharides.In addition,this article examines C.militaris fermentation conditions,the polysaccharides extraction methods developed for industrial production,and the strategies to increase the yield of polysaccharides and improve their pharmacological functions.This review could provide a theoretical basis for future research on C.militaris polysaccharides,and also serve as an important reference value in the field of functional foods and medicine.展开更多
文摘Coded aperture imaging(CAI)is widely used as an energetic-particles telescope in high-energy astrophysics.A typical CAI system consists of a coded mask(CM),a position-sensitive detector,and reconstruction algorithms that recover the source distributions from the measured projections.The imaging performance of CAI largely depends on the CM design,which governs the field-of-view(FOV),spatial resolution,sensitivity,and signalto-noise ratio(SNR).
基金supported by the Key Research and Development Plan Program of Shandong Province(2017YYSP027).
文摘Cordyceps militaris is a famous medicinal and edible fungus,whose polysaccharides are important biologically active substances.In recent years,the molecular structure and pharmacological functions of C.militaris polysaccharides were fully studied.However,the potential mechanism of their pharmacological functions and their chemical modification have not been systematically elucidated.Moreover,the obtention and usage of C.militaris polysaccharides present several issues,including low polysaccharide yields and poor pharmacological functions in industrial production.This review presents the latest results on the pharmacological mechanism of C.militaris,including information on how to improve C.militaris industrial production through stabilization of the strain to prevent degeneration and chemical modifications of its polysaccharides.In addition,this article examines C.militaris fermentation conditions,the polysaccharides extraction methods developed for industrial production,and the strategies to increase the yield of polysaccharides and improve their pharmacological functions.This review could provide a theoretical basis for future research on C.militaris polysaccharides,and also serve as an important reference value in the field of functional foods and medicine.
