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Non-magnetized plasma medium, has the following index recursive features: (5) Non-magnetized plasma Iterative equation recursive convolution (6) Simulation experiment (1) FDTD simulation model of the non-magnetized plasma According to numerical stability and numerical dispersion of meshing requirements of FDTD simulation experiments, we set the scale as 0.5×0.5nm2, grid number as 200×200, nanoparticles medium was gold, taking the plane circle model, the particle size is taken to 20nm .
Fig1(a) Raman enhancement plane under visible light irradiation(632nm) Fig1(b) Raman enhancement plane under Terahertz wave irradiation(9.50THz) As shown from Fig. 1(a) and (b), plane wave incident spectral enhancement factor (|E/E0|2) concentrated at the junction of the two nanoparticles and at the grain boundaries，and the enhanced junction reflects the influence of the interaction of nano-particles under light irradiation of the spectrum.

It is probably due to the size of the grains, which is larger for potato starch.
For the concentrations of 30 and 40% of potato starch (Fig. 3 (c) and (d)), a large number of pores of diameter around 10μm were observed.

The vacuum condition can prevent or limit the oxidation and the fast heating rate along spark and plasma condition can help to control the reactions between Mg and other phases including suppressing coarse growth of formation phases and crystal grains [3-5].
A large number of hole-like defects (voids) can be seen in Fig.5 (a).

Based on the sediment continuity equation (Eq. (4)), the bed level change dz/dt can be obtained in a number of ways [12]
Input parameters used are bathymetry data, water surface elevation, wind, wave, current, and grain size of sediment.

At lower doping levels (0.1 N), the surface may show larger grains and less uniformity, with fewer active sites for gas sensing applications.
With 0.3 N doping, the morphology improves, showing smaller grains and increased surface roughness.
However, at 0.7 N, higher doping can cause agglomeration of particles, resulting in a reduction in surface area due to grain coalescence.
The increased resistivity at this optimal doping level suggests a higher density of charge carriers and a greater number of oxygen vacancies, which play a crucial role in the interaction with ethanol molecules.
At this doping concentration, the formation of oxygen vacancies is maximized, which increases the number of active sites available for ethanol adsorption [60].

The Numerical Simulation Model It is well known that rocks are inhomogeneous material that containing many types of micro cracks, joints and grains with different sizes, which leads to its anisotropic and nonlinear deformation behavior.
The numbers in the time step indicate when the cutters and the displacement increment are applied on the top of the rock specimen.

Through adjusting numbers of CBN grain, type and proportionment of adhesive agent, the tools materials toughness was improved.

According to the design goals, with reference to the pre-project research results [3], macroporous concrete without sand made of Mengdian brand 42.5R ordinary portland cement as cementitious materials, crushed stone in grain size 20-30mm as coarse aggregate.
Timely watering after planting, because of thin nutrition soil, increasing the number of watering encountered hot weather to ensure the survival rate of plants.

Impact toughness was carried out with a CYCJ-04A impact toughness tester (impact cycle number was 1000, at the frequency of 2000rpm).
Ichida, Mechanical properties and grinding performance of ultrafine-crystalline CBN abrasive grains, Diamond and Related Materials. 17 (2004) 1791-1795

The corundum is made in Henan, and we choose two grain size shown in Table 2.
Its particle size is 400 mesh numbers.