A novel periodic mount was presented. A theoretical model was developed to describe the dynamics of wave propagation in the novel periodic mount. The model was derived using Hamilton's energy conservation principl...A novel periodic mount was presented. A theoretical model was developed to describe the dynamics of wave propagation in the novel periodic mount. The model was derived using Hamilton's energy conservation principle. The characteristics of wave propagation in unit cell were analyzed by transfer matrix formulation. Numerical examples were given to illustrate the effectiveness of the periodic mount. The experiments were carried out to identify the predications of the theoretical model. The obtained results show that the experimental results coincide with the prediction of theoretical model. No pass bands appear in the overall frequency range measured when waves propagate in the longitude direction of the periodic mount. These dramatic results demonstrate its potential as an excellent mount in attenuating and isolating vibration transmission.展开更多
本研究通过微波(microwave,MIC)预处理和超声水浴(ultrasonic water bath,USWB)预处理对瓜蒌子分离蛋白(Trichosanthes kirilowii Maxim.seed protein isolates,TPI)进行辅助提取,并探讨这两种预处理方法对TPI结构特征、理化特性以及热...本研究通过微波(microwave,MIC)预处理和超声水浴(ultrasonic water bath,USWB)预处理对瓜蒌子分离蛋白(Trichosanthes kirilowii Maxim.seed protein isolates,TPI)进行辅助提取,并探讨这两种预处理方法对TPI结构特征、理化特性以及热特性的影响。结果表明,在色差方面,经过MIC和USWB处理得到的TPI总色差(ΔE)分别为18.82和25.61;同时,与MIC-TPI相比,USWB-TPI的微观结构更加细小、粗糙;二级结构中β-折叠相对含量(5.2%)减少,分子结构松散无序;此外,其还具有更高的表面疏水性和更佳的乳化稳定性(19.88 min)、泡沫稳定性(70.83%)和热特性(变性温度为81.05℃)。综上,USWB对TPI的结构和理化性质的影响大于MIC。本研究结果可为TPI提取提供一定的指导,有助于促进TPI在食品领域中的应用。展开更多
基金Project(50775225) supported by the National Natural Science Foundation of China
文摘A novel periodic mount was presented. A theoretical model was developed to describe the dynamics of wave propagation in the novel periodic mount. The model was derived using Hamilton's energy conservation principle. The characteristics of wave propagation in unit cell were analyzed by transfer matrix formulation. Numerical examples were given to illustrate the effectiveness of the periodic mount. The experiments were carried out to identify the predications of the theoretical model. The obtained results show that the experimental results coincide with the prediction of theoretical model. No pass bands appear in the overall frequency range measured when waves propagate in the longitude direction of the periodic mount. These dramatic results demonstrate its potential as an excellent mount in attenuating and isolating vibration transmission.
文摘本研究通过微波(microwave,MIC)预处理和超声水浴(ultrasonic water bath,USWB)预处理对瓜蒌子分离蛋白(Trichosanthes kirilowii Maxim.seed protein isolates,TPI)进行辅助提取,并探讨这两种预处理方法对TPI结构特征、理化特性以及热特性的影响。结果表明,在色差方面,经过MIC和USWB处理得到的TPI总色差(ΔE)分别为18.82和25.61;同时,与MIC-TPI相比,USWB-TPI的微观结构更加细小、粗糙;二级结构中β-折叠相对含量(5.2%)减少,分子结构松散无序;此外,其还具有更高的表面疏水性和更佳的乳化稳定性(19.88 min)、泡沫稳定性(70.83%)和热特性(变性温度为81.05℃)。综上,USWB对TPI的结构和理化性质的影响大于MIC。本研究结果可为TPI提取提供一定的指导,有助于促进TPI在食品领域中的应用。
