method uses an echo that is generated by the wave in which penetrates the sample.
2-1-1. Measurement of Young's modulus using sonic resonance
The principal idea behind the sonic resonance test method can be explained using the equation by which one can measure the propagating speed of flexural sonic wave through a medium
(1)
where v is the propagating speed of the flexural wave
1 GPa
Elastic modulus Nanoindentation > 6 GPa
Adhesion Tape pull, modified-edge lift-off Delamination-free
Disavantages
Weakens mechanical properties
Lower thermal conductivity
Narrow pore distribution to ensure dielectric constant is homogeneous and isotropic
Pores need to be closed cells to prevent crack propagation and moisture absorption
Need to add silica to seal surface pores
2.7 Shared Values
The degree of knowing mission and vision of the organization among the employees is quite high compared to usual for-profit organizations. It comes from the fact that employees are highly motivated with personal belief or value of helping children when they enter the organization.
However, just ‘knowing’ what to do is not enough for Save the Children Korea. Employees’ u
Method
The method we are going to use is “Homologous recombination” to knock out hupL and xicS genes. Homologous recombination is type of genetic recombination which DNA sequences are exchanged between two similar or identical strands. It can be used for deletion of the target gene.
First, design and fabricate the similar DNA construct you want to insert into the chromosome in place
between the transducer and the test surface.
When scanning over the part or making precise measurements, an immersion technique is often used. In immersionultrasonic testing both the transducer and the part are immersed in the couplant, which is typically water. This method of coupling makes it easier to maintain consistent coupling while moving and manipulating the transducer and/or the part.