Table 6. Natural and normalized factors
| | Natural values | Normalized values |
| F-r | i | Xi min | Xi max | Xi 0 | xi min | xi max | xi 0 |
| ρ | 1 | 625 kg/m3 | 775 kg/m3 | 700 kg/m3 | −1 | 1 | 0 |
| T | 2 | 293K | 373K | 333K | −1 | 1 | 0 |
| w | 3 | 0% | 30% | 15% | −1 | 1 | 0 |
| u(t) | 4 | 0 s | 300 s | 600 s | −1 | 1 | 0 |
| m(t) | 5 | 0 s | 30 s | 60 s | −1 | 1 | 0 |
F-r: factor, ρ: density, T: temperature, w: humidity, u(t): ultrasonic treatment, m(t): pulsed magnetic field.