In its first round of replication, the T7 chromosome follows a simple pattern, as viewed in the electron microscope. The iniation of DNA synthesis occurs about 17% from the genetic left end of the viral DNA rod. Bidirectional DNA synthesis from this origin then generates a replicating intermediate that we call an "eye form." In the eye form, when synthesis in the leftward direction reaches the ...

In this study, a new alloy material Mg-Zn-Zr (ZK60) was designed for the connecting rod. It found that blanks sampled along vertical direction of an extruded bar crack during roll forging process. The microstructure and precipitates were observed analyzed using optical microscope (OM), scanning electron (SEM) x-ray diffraction (XRD). result showed Zn, Zr, MnZn2 elongated extrusion direction. me...

Due to insufficient muscle strength, a novel rehabilitation mechanism of the shoulder joint exoskeleton is proposed and analyzed based on gear rack transmission, which solves problem that stroke patients need repetitive exercise training. First, range motion angle determined, mechanical structure designed. The arc engaged with output shaft reducer, servo motor utilized as driving force realize ...