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Our study aims to explore the in vitro effects of reprogramming factors on the expressions of pluripotent genes and CD34 gene in HL-60 cells.According to the construction of lentiviral vector LV-OSCK of reprogramming factors (Oct-4, Sox2, Klf4, c-Myc), 293T cells were transfected to detect virus titer. The endogenous pluripotent genes (Oct4, SOX2, c-Myc and Klf4) and CD34 mRNA and protein expressions...
The essay gives design ideas of the circlip switch and builds three-dimensional model. Based on finite element analysis software(ANSYS), stress of the gravity block and reed used as switch poles is analyzed. assessing and analyzing force and deformation of the reed by ANSYS analysis results. Hammer test is carried out to simulate ultrahigh overload environment of the processed switch. Test result...
The essay analyses overload characteristics of traveling wave type rotary ultrasonic motor. Establishing finite element model of the Traveling Wave Type Rotary Ultrasonic Motor under impact load and using finite element software (LS-DYNA) to simulate impact process of ultrasonic motor in a large overload system. Researching bearing overload capacity according to the current structure of ultrasonic...
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