In order to study the dynamic response of the unmanned aerial vehicle cabin door opening and closing system under impact load conditions, considering the flexible treatment of mechanical components, and the system’s ...In order to study the dynamic response of the unmanned aerial vehicle cabin door opening and closing system under impact load conditions, considering the flexible treatment of mechanical components, and the system’s motion with different stiffness of energy-absorbing components, a rigid-flexible coupling model of the cabin door actuation system was established in LMS. Virtual. Motion. In Amesim, a control model of the motor was created. Through the Motion-Amesim co-simulation module, the dynamic module of the system was combined with the motor control module to complete the electromechanical coupling simulation and analyze the results. .展开更多
本文研究外源赤霉酸(gibberellic acid,GA_3)处理对采后番茄果实抗冷性的影响。以绿熟期的浙粉702番茄果实为试材,室温下经0、0.2、0.5和1 m M GA_3水溶液处理30 min后,在4℃条件下贮藏,分别在贮藏第0、3、7、14、21和28 d时取样,于室...本文研究外源赤霉酸(gibberellic acid,GA_3)处理对采后番茄果实抗冷性的影响。以绿熟期的浙粉702番茄果实为试材,室温下经0、0.2、0.5和1 m M GA_3水溶液处理30 min后,在4℃条件下贮藏,分别在贮藏第0、3、7、14、21和28 d时取样,于室温下放置3 d后测定番茄果实的冷害指数以确定适宜的GA3浓度,并观察此浓度GA3处理后番茄果实微观结构变化,测定其丙二醛(malondialdehyde,MDA)含量、离子渗透率以及细胞膜磷脂相关酶:磷脂酶C(phospholipase C,PLC)、磷脂酶D(phospholipase D,PLD)、脂氧合酶(lipoxidase,LOX)和细胞壁降解酶多聚半乳糖醛酸酶(polygalacturonase,PG)活性的变化。结果表明:与对照组相比,外源0.5 m M GA_3处理能有效减轻番茄果实的冷害症状、保护细胞的微观结构、抑制MDA含量和离子渗透率的增加以及PLC、PLD、LOX和PG活性的增强,从而提高采后番茄果实的抗冷性。展开更多
基金the National Natural Science Foundation of China(8181101216)Outstanding Innovative Talents Cultivation Funded Programs for Doctoral Students of Jinan University(2023CXB027).
文摘In order to study the dynamic response of the unmanned aerial vehicle cabin door opening and closing system under impact load conditions, considering the flexible treatment of mechanical components, and the system’s motion with different stiffness of energy-absorbing components, a rigid-flexible coupling model of the cabin door actuation system was established in LMS. Virtual. Motion. In Amesim, a control model of the motor was created. Through the Motion-Amesim co-simulation module, the dynamic module of the system was combined with the motor control module to complete the electromechanical coupling simulation and analyze the results. .
文摘本文研究外源赤霉酸(gibberellic acid,GA_3)处理对采后番茄果实抗冷性的影响。以绿熟期的浙粉702番茄果实为试材,室温下经0、0.2、0.5和1 m M GA_3水溶液处理30 min后,在4℃条件下贮藏,分别在贮藏第0、3、7、14、21和28 d时取样,于室温下放置3 d后测定番茄果实的冷害指数以确定适宜的GA3浓度,并观察此浓度GA3处理后番茄果实微观结构变化,测定其丙二醛(malondialdehyde,MDA)含量、离子渗透率以及细胞膜磷脂相关酶:磷脂酶C(phospholipase C,PLC)、磷脂酶D(phospholipase D,PLD)、脂氧合酶(lipoxidase,LOX)和细胞壁降解酶多聚半乳糖醛酸酶(polygalacturonase,PG)活性的变化。结果表明:与对照组相比,外源0.5 m M GA_3处理能有效减轻番茄果实的冷害症状、保护细胞的微观结构、抑制MDA含量和离子渗透率的增加以及PLC、PLD、LOX和PG活性的增强,从而提高采后番茄果实的抗冷性。
