Flux densities are fundamental observational parameters that describe a pulsar.In the current pulsar catalogue,27% of the listed radio pulsars have no flux density measurement in the 20 cm observing band.Here,we prese...Flux densities are fundamental observational parameters that describe a pulsar.In the current pulsar catalogue,27% of the listed radio pulsars have no flux density measurement in the 20 cm observing band.Here,we present the first such measurements for 32 pulsars observed employing the Parkes radio telescope.We have used both archival and new observations to make these measurements.Various schemes exist for measuring flux densities and we show how the measured flux densities vary between these methods and how the presence of radio-frequency interference will bias the flux density measurements.展开更多
Vocal cord paralysis can occur as a complication o surgery or anaesthesia,if permanent is a significant clinica problem.Early detection is important to optimize the chance o repair,and avoid complications associated w...Vocal cord paralysis can occur as a complication o surgery or anaesthesia,if permanent is a significant clinica problem.Early detection is important to optimize the chance o repair,and avoid complications associated with an impaired swallow.An algorithm to detect altered vocal cord function was presented based on wavelet packet analysis(WPA) and suppor vector machines(SVM),and compared with the Hoarseness Diagram method(HDm),which was reported as an objective voice quality evaluation approach and could be used for pathological voice discrimination.Experiments using voice signals recorded from subjects before and after the procedure show high classification accuracy with the new algorithm,whereas HDm fails in the detection of a hoarse voice.This finding would help to develop a screening tool to detect the vocal structure damage during surgery.展开更多
Antimicrobials are critical to contemporary high-intensity beef production. Many different antimicrobials are approved for beef cattle, and are used judiciously for animal welfare, and controversially, to promote grow...Antimicrobials are critical to contemporary high-intensity beef production. Many different antimicrobials are approved for beef cattle, and are used judiciously for animal welfare, and controversially, to promote growth and feed efficiency. Antimicrobial administration provides a powerful selective pressure that acts on the microbial community, selecting for resistance gene determinants and antimicrobial-resistant bacteria resident in the bovine flora. The bovine microbiota includes many harmless bacteria, but also opportunistic pathogens that may acquire and propagate resistance genes within the microbial community via horizontal gene transfer. Antimicrobial-resistant bovine pathogens can also complicate the prevention and treatment of infectious diseases in beef feedlots,threatening the efficiency of the beef production system. Likewise, the transmission of antimicrobial resistance genes to bovine-associated human pathogens is a potential public health concern. This review outlines current antimicrobial use practices pertaining to beef production, and explores the frequency of antimicrobial resistance in major bovine pathogens. The effect of antimicrobials on the composition of the bovine microbiota is examined, as are the effects on the beef production resistome. Antimicrobial resistance is further explored within the context of the wider beef production continuum, with emphasis on antimicrobial resistance genes in the food chain, and risk to the human population.展开更多
To assist with the commissioning [1] of the Five-hundredmeter Aperture Spherical radio Telescope (FAST), we performed a pulsar search, with the primary goal of developing and testing the pulsar data acquisition and pr...To assist with the commissioning [1] of the Five-hundredmeter Aperture Spherical radio Telescope (FAST), we performed a pulsar search, with the primary goal of developing and testing the pulsar data acquisition and processing pipelines. We tested and used three pipelines, two (Pl and P2 hereafter) searched for the periodic signature of pulsars whereas the other one was used to search for bright single pulses (P3 hereafter).展开更多
When it comes to Indian food,there is nobody we trust more than the Oakham Curry Club,or OCC,whose Shanghai branch was founded at the beginning of 2017 with the motto,"May your poppadoms be crispy,your sauces be ...When it comes to Indian food,there is nobody we trust more than the Oakham Curry Club,or OCC,whose Shanghai branch was founded at the beginning of 2017 with the motto,"May your poppadoms be crispy,your sauces be tasty and your curry spicy."They visit one Indian restaurant a month,anonymously grading each over five categories-service,quality.展开更多
基金the National Key R&D Program of China (No. 2017YFA0402602)the Strategic Priority Research Programme (B) of the Chinese Academy of Sciences (No. XDB23010200)
文摘Flux densities are fundamental observational parameters that describe a pulsar.In the current pulsar catalogue,27% of the listed radio pulsars have no flux density measurement in the 20 cm observing band.Here,we present the first such measurements for 32 pulsars observed employing the Parkes radio telescope.We have used both archival and new observations to make these measurements.Various schemes exist for measuring flux densities and we show how the measured flux densities vary between these methods and how the presence of radio-frequency interference will bias the flux density measurements.
基金National Natural Science Foundation of China (No.60971016)
文摘Vocal cord paralysis can occur as a complication o surgery or anaesthesia,if permanent is a significant clinica problem.Early detection is important to optimize the chance o repair,and avoid complications associated with an impaired swallow.An algorithm to detect altered vocal cord function was presented based on wavelet packet analysis(WPA) and suppor vector machines(SVM),and compared with the Hoarseness Diagram method(HDm),which was reported as an objective voice quality evaluation approach and could be used for pathological voice discrimination.Experiments using voice signals recorded from subjects before and after the procedure show high classification accuracy with the new algorithm,whereas HDm fails in the detection of a hoarse voice.This finding would help to develop a screening tool to detect the vocal structure damage during surgery.
基金supported by an NSERC Postdoctoral Fellowshipsupported by the Beef Cattle Research Council BCRC–Agriculture and Agri-Food Canada beef cluster
文摘Antimicrobials are critical to contemporary high-intensity beef production. Many different antimicrobials are approved for beef cattle, and are used judiciously for animal welfare, and controversially, to promote growth and feed efficiency. Antimicrobial administration provides a powerful selective pressure that acts on the microbial community, selecting for resistance gene determinants and antimicrobial-resistant bacteria resident in the bovine flora. The bovine microbiota includes many harmless bacteria, but also opportunistic pathogens that may acquire and propagate resistance genes within the microbial community via horizontal gene transfer. Antimicrobial-resistant bovine pathogens can also complicate the prevention and treatment of infectious diseases in beef feedlots,threatening the efficiency of the beef production system. Likewise, the transmission of antimicrobial resistance genes to bovine-associated human pathogens is a potential public health concern. This review outlines current antimicrobial use practices pertaining to beef production, and explores the frequency of antimicrobial resistance in major bovine pathogens. The effect of antimicrobials on the composition of the bovine microbiota is examined, as are the effects on the beef production resistome. Antimicrobial resistance is further explored within the context of the wider beef production continuum, with emphasis on antimicrobial resistance genes in the food chain, and risk to the human population.
基金supported by the National Key R&D Program of China(Grant No.2017YFA0402600)the State Key Development Program for Basic Research(Grant No.2015CB857100)+8 种基金the Open Project Program of the Key Laboratory of FAST,NAOC,Chinese Academy of Sciencessupported by the Chinese Academy of Sciences Pioneer Hundred Talents Programthe Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDB23000000)supported in part by the Youth Innovation Promotion Association of CAS(Id.2018075)supported by the National Natural Science Foundation of China(Grant No.11703047)the National Natural Science Foundation of China(Grant Nos.11690024,11743002,and 11873067)the CAS"Light of West China" Programsupported by the CAS"Light of West China" ProgramThe Parkes radio telescope is part of the Australia Telescope National Facility which is funded by the Australian Government for operation as a National Facility managed by CSIRO
文摘To assist with the commissioning [1] of the Five-hundredmeter Aperture Spherical radio Telescope (FAST), we performed a pulsar search, with the primary goal of developing and testing the pulsar data acquisition and processing pipelines. We tested and used three pipelines, two (Pl and P2 hereafter) searched for the periodic signature of pulsars whereas the other one was used to search for bright single pulses (P3 hereafter).
文摘When it comes to Indian food,there is nobody we trust more than the Oakham Curry Club,or OCC,whose Shanghai branch was founded at the beginning of 2017 with the motto,"May your poppadoms be crispy,your sauces be tasty and your curry spicy."They visit one Indian restaurant a month,anonymously grading each over five categories-service,quality.
