The elpidiid holothurian Peniagone leander Pawson and Foell,1986 is recorded for the first time from the Mariana Trench area at a depth of 5571 m.The type description of this species was based on only in-situ photogra...The elpidiid holothurian Peniagone leander Pawson and Foell,1986 is recorded for the first time from the Mariana Trench area at a depth of 5571 m.The type description of this species was based on only in-situ photographs.P.leander is re-described and illustrated based on a preserved material and in-situ photographs taken on the seabed.The 16S rRNA was also obtained from the specimen and submitted to GenBank.This is the fourth discovery of this species,extending its bathymetric range in the western Pacific Ocean.展开更多
Background: Taxicab drivers have high homicide rates compared to all worker occupations. To help taxi fleets select effective taxicab security cameras, this project tested eight sample taxicab security cameras for det...Background: Taxicab drivers have high homicide rates compared to all worker occupations. To help taxi fleets select effective taxicab security cameras, this project tested eight sample taxicab security cameras for determining their photographic quality which correlated to the effectiveness of in-taxicab facial identification. Methods: Five photographic quality metric thresholds: 1) resolution, 2) highlight dynamic range, 3) shadow dynamic range, 4) lens distortion, and 5) shutter speed, were employed to evaluate the photographic quality of the sample cameras. Waterproof tests and fire-resistive tests on recording memory cards were conducted to determine the memory card survivability in water and simulated fire. Results: The Full-HD (1920 × 1080 pixels), HD (1280 × 720 pixels) and dual-lens VGA (2 × 640 × 480 pixels with wide-angle and telephoto lenses) cameras performed well in resolution tests in daylight conditions. The resolution of a single-lens VGA (640 × 480 pixels) camera did not meet the resolution minimum requirements. All of the recording memory cards passed the five-meter/72-hour waterproof test. A fire resistant chamber made with one fire insulation material could protect a single memory card at 538°C/1000°F for a five-minute simulated fire test. Conclusions: Single-lens VGA-resolution (640 × 480 pixels) cameras are not suggested for use as security cameras in taxicabs with two or more rows of seats. The recording memory cards can survive 5-meter/72-hour waterproof tests. The memory card chamber built with an existing heat insulation material can protect an individual memory card during 538°C?(1000°F)/5-minute fire resistance oven-test.展开更多
花面狸(Paguma larvata C. E. H. Smith, 1827)俗称果子狸,隶属于食肉目(Carnivora)灵猫科(Viverridae)花面狸属(Paguma),作为“三有”保护动物,其在中国脊椎动物红色名录中的濒危等级为近危(蒋志刚等,2020)。花面狸在国外分布于巴基斯...花面狸(Paguma larvata C. E. H. Smith, 1827)俗称果子狸,隶属于食肉目(Carnivora)灵猫科(Viverridae)花面狸属(Paguma),作为“三有”保护动物,其在中国脊椎动物红色名录中的濒危等级为近危(蒋志刚等,2020)。花面狸在国外分布于巴基斯坦、不丹、柬埔寨、老挝、马来西亚、孟加拉国、缅甸、尼泊尔、泰国、文莱、印度、印度尼西亚、越南;国内共分布有5个亚种,其中指名亚种(P.l. larvata)分布于北京、河北、甘肃、陕西、重庆、四川、河南、湖北、湖南、安徽、福建、江西、上海、浙江、广东、广西,喜马拉雅亚种(P. l.grayi)分布于西藏南部,台湾亚种(P. l. taivana)分布于台湾,海南亚种(P. l. hainana)分布于海南.展开更多
基金the National Key R&D Program of China(No.2018YFC0309804)the China Ocean Mineral Resources Research and Development Association Program(No.DY135-E2-3-04)+1 种基金the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDB42000000)the Biological Resources Program,Chinese Academy of Sciences(No.KFJ-BRP-017-38)。
文摘The elpidiid holothurian Peniagone leander Pawson and Foell,1986 is recorded for the first time from the Mariana Trench area at a depth of 5571 m.The type description of this species was based on only in-situ photographs.P.leander is re-described and illustrated based on a preserved material and in-situ photographs taken on the seabed.The 16S rRNA was also obtained from the specimen and submitted to GenBank.This is the fourth discovery of this species,extending its bathymetric range in the western Pacific Ocean.
文摘Background: Taxicab drivers have high homicide rates compared to all worker occupations. To help taxi fleets select effective taxicab security cameras, this project tested eight sample taxicab security cameras for determining their photographic quality which correlated to the effectiveness of in-taxicab facial identification. Methods: Five photographic quality metric thresholds: 1) resolution, 2) highlight dynamic range, 3) shadow dynamic range, 4) lens distortion, and 5) shutter speed, were employed to evaluate the photographic quality of the sample cameras. Waterproof tests and fire-resistive tests on recording memory cards were conducted to determine the memory card survivability in water and simulated fire. Results: The Full-HD (1920 × 1080 pixels), HD (1280 × 720 pixels) and dual-lens VGA (2 × 640 × 480 pixels with wide-angle and telephoto lenses) cameras performed well in resolution tests in daylight conditions. The resolution of a single-lens VGA (640 × 480 pixels) camera did not meet the resolution minimum requirements. All of the recording memory cards passed the five-meter/72-hour waterproof test. A fire resistant chamber made with one fire insulation material could protect a single memory card at 538°C/1000°F for a five-minute simulated fire test. Conclusions: Single-lens VGA-resolution (640 × 480 pixels) cameras are not suggested for use as security cameras in taxicabs with two or more rows of seats. The recording memory cards can survive 5-meter/72-hour waterproof tests. The memory card chamber built with an existing heat insulation material can protect an individual memory card during 538°C?(1000°F)/5-minute fire resistance oven-test.
文摘花面狸(Paguma larvata C. E. H. Smith, 1827)俗称果子狸,隶属于食肉目(Carnivora)灵猫科(Viverridae)花面狸属(Paguma),作为“三有”保护动物,其在中国脊椎动物红色名录中的濒危等级为近危(蒋志刚等,2020)。花面狸在国外分布于巴基斯坦、不丹、柬埔寨、老挝、马来西亚、孟加拉国、缅甸、尼泊尔、泰国、文莱、印度、印度尼西亚、越南;国内共分布有5个亚种,其中指名亚种(P.l. larvata)分布于北京、河北、甘肃、陕西、重庆、四川、河南、湖北、湖南、安徽、福建、江西、上海、浙江、广东、广西,喜马拉雅亚种(P. l.grayi)分布于西藏南部,台湾亚种(P. l. taivana)分布于台湾,海南亚种(P. l. hainana)分布于海南.
