On the base of single factors experiments,Plackett Burman design was applied to study the factors of ultrasonic extraction and screen out the key factors:temperature(p=0.034 4),alcohol concentration(p=0.024 1)and the extraction of times(p=0.023 7).
In this paper the synthesis of the modified DMDHEU resin and the relationship between the Crosslinkage agent the light sensitive agent, the reta-rder and the light source have been discussed and the Possibility of applying the modified DMDHEU resin tho the sieve screen printing is suggested.
Taking Saati screen as an example, specifications of the printing screen are discussed by means of mesh count, opening rate, opening capacity (theoretical colour volume), fabric thickness and mesh opening.
In section 1, I will summarize the latest evolution and the modern screen design. At the same time, I also discuss the new things that can be used in designing screen, and their effect on screen development.
We also demonstrate these spatial changes on the screen using Visual Basic language and GIS functions, which will help decision makers to have a clear view of species and site suitability changes over large areas.
The authors give a wave function of the state of particles on the screen in abovementioned configurations.
Many important proteins, such as some nucleoprotein transcriptional factor, carry out the regular method and construct the bait-BD vector to screen the library containing AD vector.
And we used this two-hybrid library to screen FOXA3, a hepatocyte nuclear factor, and found out an interacting protein: complement component C3.
Polymerase chain reaction and DNA sequencing were used to screen for KCNQ1, KCNH2, KCNE1, KCNE2 and SCN5A mutation.