To fine map the previously detected quantitative trait loci(QTLs)affecting milk production traits on bovine chromosome 6(BTA6),15 microsatellite markers situated within an interval of 14.3 cM spanning from BMS690 to B...To fine map the previously detected quantitative trait loci(QTLs)affecting milk production traits on bovine chromosome 6(BTA6),15 microsatellite markers situated within an interval of 14.3 cM spanning from BMS690 to BM4528 were selected and 918 daughters of 8 sires were genotyped.Two mapping approaches,haplotype sharing based LD mapping and single marker regression mapping,were used to analyze the data.Both approaches revealed a quantitative trait locus(QTL)with significant effects on milk yield,fat yield and protein yield located in the segment flanked by markers BMS483 and MNB209,which spans a genetic distance of 0.6 cM and a physical distance of 1.5 Mb.In addition,the single marker regression mapping also revealed a QTL affecting fat percentage and protein percentage at marker DIK2291.Our fine mapping work will facilitate the cloning of candidate genes underlying the QTLs for milk production traits.展开更多
Based on traditional Chinese philosophy, we study the modern eco-tourism and environmental ethics and its implications. Firstly, the eco-tourism and environmental ethics were defi ned; Secondly, the Chinese philosophy...Based on traditional Chinese philosophy, we study the modern eco-tourism and environmental ethics and its implications. Firstly, the eco-tourism and environmental ethics were defi ned; Secondly, the Chinese philosophy of Confucianism and Taoism related to the concept of eco-tourism and environmental ethics were reviewed; Finally, we provide implications to the practitioners and experts of environment in China.展开更多
The Chinese Hα Solar Explorer(CHASE), dubbed “Xihe”—Goddess of the Sun, was launched on October 14, 2021 as the first solar space mission of China National Space Administration(CNSA). The CHASE mission is designed...The Chinese Hα Solar Explorer(CHASE), dubbed “Xihe”—Goddess of the Sun, was launched on October 14, 2021 as the first solar space mission of China National Space Administration(CNSA). The CHASE mission is designed to test a newly developed satellite platform and to acquire the spectroscopic observations in the Hα waveband. The Hα Imaging Spectrograph(HIS)is the scientific payload of the CHASE satellite. It consists of two observational modes: raster scanning mode and continuum imaging mode. The raster scanning mode obtains full-Sun or region-of-interest spectral images from 6559.7 to 6565.9 ? and from 6567.8 to 6570.6 ? with 0.024 ? pixel spectral resolution and 1 min temporal resolution. The continuum imaging mode obtains photospheric images in continuum around 6689 ? with the full width at half maximum of 13.4 ?. The CHASE mission will advance our understanding of the dynamics of solar activity in the photosphere and chromosphere. In this paper, we present an overview of the CHASE mission including the scientific objectives, HIS instrument overview, data calibration flow, and first results of on-orbit observations.展开更多
The solar X-ray and Extreme Ultraviolet Imager(X-EUVI),developed by the Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences(CIOMP),is the first space-based solar X-ray and Extreme ultr...The solar X-ray and Extreme Ultraviolet Imager(X-EUVI),developed by the Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences(CIOMP),is the first space-based solar X-ray and Extreme ultraviolet(EUV)imager of China loaded on the Fengyun-3E(FY-3E)satellite supported by the China Meteorological Administration(CMA)for solar observation.Since started work on July 11,2021,X-EUVI has obtained many solar images.The instrument employs an innovative dual-band design to monitor a much larger temperature range on the Sun,which covers 0.6-8.0 nm in the X-ray region with six channels and 19.5 nm in the EUV region.X-EUVI has a field of view of 42′,an angular resolution of 2.5″per pixel in the EUV band and an angular resolution of 4.1″per pixel in the X-ray band.The instrument also includes an X-ray and EUV irradiance sensor(X-EUVS)with the same bands as its imaging optics,which measures the solar irradiance and regularly calibrates the solar images.The radiometric calibration of X-EUVS on the ground has been completed,with a calibration accuracy of 12%.X-EUVI is loaded on the FY-3E satellite and rotates relative to the Sun at a uniform rate.Flat-field calibration is conducted by utilizing successive rotation solar images.The agreement between preliminarily processed X-EUVI images and SDO/AIA and Hinode/XRT images indicates that X-EUVI and the data processing algorithm operate properly and that the data from X-EUVI can be applied to the space weather forecast system of CMA and scientific investigations on solar activity.展开更多
The Hα imaging spectrograph(HIS) is the scientific payload of the first solar space mission, the Chinese Hα solar explorer(CHASE), supported by the China National Space Administration(CNSA). The CHASE/HIS achieves, ...The Hα imaging spectrograph(HIS) is the scientific payload of the first solar space mission, the Chinese Hα solar explorer(CHASE), supported by the China National Space Administration(CNSA). The CHASE/HIS achieves, for the first time in space, Hα spectroscopic observations with high spectral and temporal resolutions. Separate channels for the raster scanning mode(RSM) and continuum imaging mode(CIM) are integrated into one, and a highly integrated design is achieved through multiple folding of the optical path and ultra-light miniaturized components. The design of HIS implements a number of key technologies such as high-precision scanning of the optical field of view(FOV), high-precision integrated manufacturing inspection, a large-tolerance pre-filter window, and full-link solar radiation calibration. The HIS instrument has a pixel spectral resolution of 0.024 ? and can complete a full-Sun scanning within 46 s.展开更多
A recent study of significant research value carried out at the State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou,
基金supported by the National Key Basic Research Program of China(No.2006CB102104)
文摘To fine map the previously detected quantitative trait loci(QTLs)affecting milk production traits on bovine chromosome 6(BTA6),15 microsatellite markers situated within an interval of 14.3 cM spanning from BMS690 to BM4528 were selected and 918 daughters of 8 sires were genotyped.Two mapping approaches,haplotype sharing based LD mapping and single marker regression mapping,were used to analyze the data.Both approaches revealed a quantitative trait locus(QTL)with significant effects on milk yield,fat yield and protein yield located in the segment flanked by markers BMS483 and MNB209,which spans a genetic distance of 0.6 cM and a physical distance of 1.5 Mb.In addition,the single marker regression mapping also revealed a QTL affecting fat percentage and protein percentage at marker DIK2291.Our fine mapping work will facilitate the cloning of candidate genes underlying the QTLs for milk production traits.
基金supported by the project of National Social Fund of China (Grant No.12XGL007)Fundamental Research Funds for the Central Universities (Grant No. SWU1409123)+2 种基金Foundation of Chongqing Municipal Education Committee (Grant No. yjg131003),Foundation of Chongqing Municipal Education Committee (Grant No.111002)Project of National Social Science Fund of China (Grant No. 12&ZD100)National Soft Science Research Project (Grant No. 2014GXS4D143)
文摘Based on traditional Chinese philosophy, we study the modern eco-tourism and environmental ethics and its implications. Firstly, the eco-tourism and environmental ethics were defi ned; Secondly, the Chinese philosophy of Confucianism and Taoism related to the concept of eco-tourism and environmental ethics were reviewed; Finally, we provide implications to the practitioners and experts of environment in China.
基金supported by China National Space Administration(CNSA)。
文摘The Chinese Hα Solar Explorer(CHASE), dubbed “Xihe”—Goddess of the Sun, was launched on October 14, 2021 as the first solar space mission of China National Space Administration(CNSA). The CHASE mission is designed to test a newly developed satellite platform and to acquire the spectroscopic observations in the Hα waveband. The Hα Imaging Spectrograph(HIS)is the scientific payload of the CHASE satellite. It consists of two observational modes: raster scanning mode and continuum imaging mode. The raster scanning mode obtains full-Sun or region-of-interest spectral images from 6559.7 to 6565.9 ? and from 6567.8 to 6570.6 ? with 0.024 ? pixel spectral resolution and 1 min temporal resolution. The continuum imaging mode obtains photospheric images in continuum around 6689 ? with the full width at half maximum of 13.4 ?. The CHASE mission will advance our understanding of the dynamics of solar activity in the photosphere and chromosphere. In this paper, we present an overview of the CHASE mission including the scientific objectives, HIS instrument overview, data calibration flow, and first results of on-orbit observations.
基金supported in part by the National Science Foundation of China(Grant Nos.41931073,10878004,U1931118 and 42104166).
文摘The solar X-ray and Extreme Ultraviolet Imager(X-EUVI),developed by the Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences(CIOMP),is the first space-based solar X-ray and Extreme ultraviolet(EUV)imager of China loaded on the Fengyun-3E(FY-3E)satellite supported by the China Meteorological Administration(CMA)for solar observation.Since started work on July 11,2021,X-EUVI has obtained many solar images.The instrument employs an innovative dual-band design to monitor a much larger temperature range on the Sun,which covers 0.6-8.0 nm in the X-ray region with six channels and 19.5 nm in the EUV region.X-EUVI has a field of view of 42′,an angular resolution of 2.5″per pixel in the EUV band and an angular resolution of 4.1″per pixel in the X-ray band.The instrument also includes an X-ray and EUV irradiance sensor(X-EUVS)with the same bands as its imaging optics,which measures the solar irradiance and regularly calibrates the solar images.The radiometric calibration of X-EUVS on the ground has been completed,with a calibration accuracy of 12%.X-EUVI is loaded on the FY-3E satellite and rotates relative to the Sun at a uniform rate.Flat-field calibration is conducted by utilizing successive rotation solar images.The agreement between preliminarily processed X-EUVI images and SDO/AIA and Hinode/XRT images indicates that X-EUVI and the data processing algorithm operate properly and that the data from X-EUVI can be applied to the space weather forecast system of CMA and scientific investigations on solar activity.
基金supported by the China National Space Administration(CNSA)。
文摘The Hα imaging spectrograph(HIS) is the scientific payload of the first solar space mission, the Chinese Hα solar explorer(CHASE), supported by the China National Space Administration(CNSA). The CHASE/HIS achieves, for the first time in space, Hα spectroscopic observations with high spectral and temporal resolutions. Separate channels for the raster scanning mode(RSM) and continuum imaging mode(CIM) are integrated into one, and a highly integrated design is achieved through multiple folding of the optical path and ultra-light miniaturized components. The design of HIS implements a number of key technologies such as high-precision scanning of the optical field of view(FOV), high-precision integrated manufacturing inspection, a large-tolerance pre-filter window, and full-link solar radiation calibration. The HIS instrument has a pixel spectral resolution of 0.024 ? and can complete a full-Sun scanning within 46 s.
基金provided by the National Natural Science Foundation of China (30901018)the China Postdoctoral Science Foundation (201003388)
文摘A recent study of significant research value carried out at the State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou,
