The retention index values in the two delayed phases have good relativity. The diagnostic value of early delayed imaging is higher than that of late delayed imaging. An early delayed scan, according to our research, should be recommended in clinical practice.
We fabricate crystalline dendritic gold (Au-D) via a simple electrochemical method and characterize it using several techniques. Chemical modification by self-assembled thiol molecules on the Au-D is used to adjust the chemical environment of the substrate surface and to improve surface-enhanced Raman scattering (SERS) performance. First, the Au-D modified with different length chains of n-alkyl thiols cause an enhancement of SERS, which follows a rela-
Through brief analysis of characteristics of conventional control, a new type of multi-mode intelligent control algorithm based on error information is put forward. The algorithm consists of proportional acceleration control for rapidity of transient response, differential deceleration control for stationarity of transient response and steady state excitation control for accuracy of steady response. The control algorithm is applied to time-delay process, compared with other algorithms. Simulation results show its good performance with MATLAB language. The algorithm has simple structure, good generality and easy adjustment.
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