简介:Leafcolormutantsareidealmaterialsforstudyingphysiologicalprocessesinplants.Here,athermos-sensitiveleaf-colormutantofGreenwanderingjewwasisolatedaftercarbonionsirradiation,whichwasdesignatedasmt.Thecolorofyoungmutantleaveswasmoresensitivetovariationsoftemperature,however,theyoungleavesofwildtyperemainedgreenunderlow-temperatureconditions(6℃-20℃).Toelucidatethecharacteristicsofpigmentationinmutantleavesunderroomtemperatureconditions(25℃)andlow-temperatureconditions(7℃),theultra-structural,pigmentcomposition,molecularmechanismsandanthocyaninaccumulationinvolvedinthisphenomenonhavebeeninvestigatedinfourindependentexperiments.
简介:基于4阶Runge-Kutta法,介绍了“强光一号”加速器长脉冲状态的电路模型。该模型不仅考虑了电爆炸丝导体断路开关(electronexplosiveopeningswitch,EEOS)金属丝的电阻率随比作用量变化的特性,而且考虑了油间隙和真空二极管间隙击穿过程中等效阻抗的变化特性。仿真结果表明,该模型能够更好地反映EEOS的初始参数对放电回路电流和电压的影响规律,能够为加速器的运行和性能提升提供有力的技术参考。通过仿真计算和理论分析,认为“强光一号”加速器的初级储能系统——直线型变压器(lineartransformerdriver,LTD)经过升级改造后,EEOS的工作电压能够提升大约20%,且获得了EEOS最佳工作状态的参数。