The quality and aroma of strong-flavor Baijiu are mainly dependent on Daqu,pit mud(PM),and the interaction of both.However,little is known about how their combination patterns affect the microbiome and metabolome of Z...The quality and aroma of strong-flavor Baijiu are mainly dependent on Daqu,pit mud(PM),and the interaction of both.However,little is known about how their combination patterns affect the microbiome and metabolome of Zaopei,especially the metabolic function of rare taxa.Here,an experiment on industrial size was designed to assess the effects of 6 combinations(3 kinds of Daqu×2 kinds of PM)on the composition and assembly of different taxa,as well as the flavor profile.The results showed that Zaopei's microbiota was composed of a few abundant taxa and enormous rare taxa,and rare bacterial and abundant fungal subcommunities were significantly affected by combination patterns.The assembly processes of abundant/rare taxa and bacterial/fungal communities were distinct,and environmental changes mediated the balance between stochastic and deterministic processes in rare bacteria assembly.Furthermore,specific combination patterns improved the flavor quality of Zaopei by enhancing the interspecies interaction,which was closely related to rare taxa,especially rare bacteria.These findings highlighted that rare bacteria might be the keystone in involving community interaction and maintaining metabolic function,which provided a scientific foundation for better understanding and regulating the brewing microbiota from the viewpoint of microbial ecology.展开更多
Multispectral and polarization cameras that can simultaneously acquire the spatial,spectral,and polarization characteristics of an object have considerable potential applications in target detection,biomedical imaging...Multispectral and polarization cameras that can simultaneously acquire the spatial,spectral,and polarization characteristics of an object have considerable potential applications in target detection,biomedical imaging,and remote sensing.In this work,we develop a common-aperture optical system that can capture multispectral and polarization information.An off-axis three-mirror optical system is mounted on the front end of the proposed system and used as a common-aperture telescope in the visible light(400 nm-750 nm)and long-wave infrared(LWIR,8μm-12μm)waveband.The system can maintain a wide field of view(4.5°)and it can demonstrate an enhanced identification ability.The off-axis three-mirror system gets rid of central obscuration while further yielding stable system resolution and energy.Light that has passed through the front-end common-aperture reflection system is divided into the visible light and LWIR waveband by a beamsplitter.The two wavebands then converge on two detectors through two groups of lenses.Our simulation results indicate that the proposed system can obtain clear images in each waveband to meet the diverse imaging requirements.展开更多
BACKGROUND Gardnerella vaginalis(G.vaginalis)is a facultative anaerobic bacteria known to cause bloodstream infections.However,cases are very rare in clinics.There is very limited clinical experience in the treatment ...BACKGROUND Gardnerella vaginalis(G.vaginalis)is a facultative anaerobic bacteria known to cause bloodstream infections.However,cases are very rare in clinics.There is very limited clinical experience in the treatment of bloodstream infections caused by G.vaginalis.Therefore,there is an urgent need for effective antibacterial drugs to treat patients with bloodstream infections caused by G.vaginalis.CASE SUMMARY A woman who underwent a cesarean section presented with a sudden onset of high fever 1-d post-surgery.The blood cultures suggested an infection due to G.vaginalis,and treatment with cefoperazone-sulbactam was started.After 5 d of treatment,there was a decrease in the hemogram;however,the temperature and C-reactive protein levels remained high.Based on clinical experience and a review of literature,the treatment was modified to include ornidazole in combination with cefoperazone-sulbactam.Following a week of treatment,the temperature,hemogram and C-reactive protein levels returned to normal,and blood cultures turned negative,suggesting a therapeutic effect of the combination treatment.CONCLUSION This case highlighted the effective use of cefoperazone-sulbactam combined with ornidazole for bloodstream infection caused by G.vaginalis following a cesarean section.展开更多
Brittle shear failure should be avoided in beam-column joint of a reinforced concrete(RC)frame during the earthquake.Fiber-reinforced cementitious composite(FRCC)which presents a remarkable deformability especially un...Brittle shear failure should be avoided in beam-column joint of a reinforced concrete(RC)frame during the earthquake.Fiber-reinforced cementitious composite(FRCC)which presents a remarkable deformability especially under tensile and bending load with a large energy absorption capacity is expected to be used in the crucial part of a RC frame.With the development of polymer material,various synthetic fibers have become the best selection to improve concrete capacity and failure resistance without the corrosion of fibers.The objective of this study is to investigate the influence of fiber bridging effect on the shear capacity of FRCC beam-column joint.The main parameter of the test in the present study is the fiber types:aramid,polypropylene(PP)and polyvinyl alcohol(PVA)fiber.To evaluate shear capacity quantitatively,a new calculation method using FRCC tensile characteristics confirmed by the uniaxial tension test is newly proposed.The difference of below 7%between calculated value and experimental value demonstrates that the calculation method is feasible.展开更多
基金supported by the Cooperation Project of Luzhou Laojiao Co.,Ltd.Sichuan University (21H0997)。
文摘The quality and aroma of strong-flavor Baijiu are mainly dependent on Daqu,pit mud(PM),and the interaction of both.However,little is known about how their combination patterns affect the microbiome and metabolome of Zaopei,especially the metabolic function of rare taxa.Here,an experiment on industrial size was designed to assess the effects of 6 combinations(3 kinds of Daqu×2 kinds of PM)on the composition and assembly of different taxa,as well as the flavor profile.The results showed that Zaopei's microbiota was composed of a few abundant taxa and enormous rare taxa,and rare bacterial and abundant fungal subcommunities were significantly affected by combination patterns.The assembly processes of abundant/rare taxa and bacterial/fungal communities were distinct,and environmental changes mediated the balance between stochastic and deterministic processes in rare bacteria assembly.Furthermore,specific combination patterns improved the flavor quality of Zaopei by enhancing the interspecies interaction,which was closely related to rare taxa,especially rare bacteria.These findings highlighted that rare bacteria might be the keystone in involving community interaction and maintaining metabolic function,which provided a scientific foundation for better understanding and regulating the brewing microbiota from the viewpoint of microbial ecology.
基金Project supported by the National Natural Science Foundation of china(Grant No.61471039)
文摘Multispectral and polarization cameras that can simultaneously acquire the spatial,spectral,and polarization characteristics of an object have considerable potential applications in target detection,biomedical imaging,and remote sensing.In this work,we develop a common-aperture optical system that can capture multispectral and polarization information.An off-axis three-mirror optical system is mounted on the front end of the proposed system and used as a common-aperture telescope in the visible light(400 nm-750 nm)and long-wave infrared(LWIR,8μm-12μm)waveband.The system can maintain a wide field of view(4.5°)and it can demonstrate an enhanced identification ability.The off-axis three-mirror system gets rid of central obscuration while further yielding stable system resolution and energy.Light that has passed through the front-end common-aperture reflection system is divided into the visible light and LWIR waveband by a beamsplitter.The two wavebands then converge on two detectors through two groups of lenses.Our simulation results indicate that the proposed system can obtain clear images in each waveband to meet the diverse imaging requirements.
文摘BACKGROUND Gardnerella vaginalis(G.vaginalis)is a facultative anaerobic bacteria known to cause bloodstream infections.However,cases are very rare in clinics.There is very limited clinical experience in the treatment of bloodstream infections caused by G.vaginalis.Therefore,there is an urgent need for effective antibacterial drugs to treat patients with bloodstream infections caused by G.vaginalis.CASE SUMMARY A woman who underwent a cesarean section presented with a sudden onset of high fever 1-d post-surgery.The blood cultures suggested an infection due to G.vaginalis,and treatment with cefoperazone-sulbactam was started.After 5 d of treatment,there was a decrease in the hemogram;however,the temperature and C-reactive protein levels remained high.Based on clinical experience and a review of literature,the treatment was modified to include ornidazole in combination with cefoperazone-sulbactam.Following a week of treatment,the temperature,hemogram and C-reactive protein levels returned to normal,and blood cultures turned negative,suggesting a therapeutic effect of the combination treatment.CONCLUSION This case highlighted the effective use of cefoperazone-sulbactam combined with ornidazole for bloodstream infection caused by G.vaginalis following a cesarean section.
文摘Brittle shear failure should be avoided in beam-column joint of a reinforced concrete(RC)frame during the earthquake.Fiber-reinforced cementitious composite(FRCC)which presents a remarkable deformability especially under tensile and bending load with a large energy absorption capacity is expected to be used in the crucial part of a RC frame.With the development of polymer material,various synthetic fibers have become the best selection to improve concrete capacity and failure resistance without the corrosion of fibers.The objective of this study is to investigate the influence of fiber bridging effect on the shear capacity of FRCC beam-column joint.The main parameter of the test in the present study is the fiber types:aramid,polypropylene(PP)and polyvinyl alcohol(PVA)fiber.To evaluate shear capacity quantitatively,a new calculation method using FRCC tensile characteristics confirmed by the uniaxial tension test is newly proposed.The difference of below 7%between calculated value and experimental value demonstrates that the calculation method is feasible.
