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羽绒水分率的影响因素研究
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作者 柯萍英 潘辉 +1 位作者 林金美 林宁婷 《天津纺织科技》 2023年第2期44-46,共3页
探讨羽绒水分率影响因素,具体分析不同存贮环境和不同包装袋(PE袋、编织袋、涤纶袋)对羽绒水分率的影响。通过试验数据表明,相同条件下,PE袋包装的样品水分率变化最小;相同包装方式下,样品存放在恒温间比存放在室温间时变化幅度小。由... 探讨羽绒水分率影响因素,具体分析不同存贮环境和不同包装袋(PE袋、编织袋、涤纶袋)对羽绒水分率的影响。通过试验数据表明,相同条件下,PE袋包装的样品水分率变化最小;相同包装方式下,样品存放在恒温间比存放在室温间时变化幅度小。由此可见,存贮环境和包装袋对羽绒水分率有一定的影响。同时,建议试验测试羽绒水分率应尽快取样并测试;客户送样的羽绒包装袋优选PE袋并且密封;试验室羽绒样品存贮条件优选恒温间。 展开更多
关键词 羽绒 水分率 存贮环境 包装袋 恒温间
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Estimation of Accumulated Degree Day Value of Six Landmarks within the Pupal Stage of Lucilia sericata
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作者 Annalisa Grisendi Francesco Defilippo +2 位作者 Fabio Gatti Michele Dottori Paolo Bonilauri 《Journal of Life Sciences》 2015年第7期311-317,共7页
The present paper investigates the pupal development times ofLucilia sericata which were studied in the laboratory at six different constant temperatures (20, 22, 24, 26, 28 ℃ each ± ℃). Lower thresholds (tL... The present paper investigates the pupal development times ofLucilia sericata which were studied in the laboratory at six different constant temperatures (20, 22, 24, 26, 28 ℃ each ± ℃). Lower thresholds (tL) for development were estimated from the linear regression of the developmental rates on each temperature. These data have made it possible to calculate the ADD (Accumulated Degree-Days) necessary for L. sericata to complete the larval stage and to achieve adult emergence. The minimal duration of development from oviposition to adult emergence was found to be inversely related to temperature. Additionally, six landmarks in pupal development are showed and for each of the landmarks the ADD value was calculated for every rearing temperature involved. These data assist in calculating the duration of the pupal stage based on morphological characteristics and would be of great value for future forensic entomological casework. 展开更多
关键词 Forensic science forensic entomology Lucilia sericata pupal landmarks accumulated degree day post-morteminterval.
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