| 1. | Editorial | |
| Pages 1-1 | ||
| 2. | Recent Preventive Methods to Reduce the Infection Diseases by Air Distributions Control | |
| Pages 2-28 | ||
| Fatma A-M Kassem; Ahmed Farouk AbdelGawad; A. E. Abu El-Ezz; Mofreh M. Nassief; Mohamed Adel | ||
| 3. | Updated SI prefixes extension: ronto(r), quecto(q), ronna(R), quetta(Q) | |
| Pages 29-34 | ||
| Tarek M. El-Basheer; hatem khalaf Mohamed | ||
| 4. | A proposed method using t-test for stability check in proficiency testing in tensile and hardness tests | |
| Pages 35-43 | ||
| Riham Hegazy; Magdy I. Mohamed | ||
| 5. | Calibration and uncertainty evaluation for sound level meter utilizing calibrator | |
| Pages 44-53 | ||
| Mahmoud Younis; Tarek M. El-Basheer; hatem khalaf Mohamed | ||
| 6. | Method validation of quantitative FTIR as rapid and green analytical technique for dyes | |
| Pages 54-63 | ||
| Khaled E Elnagar; Heba A. El-Meged; Ahmed M. Abdel-Razik | ||
| 7. | Uncertainty Evaluation in calibration of Engineer’s Steel Rulers and Measuring Tapes; GUM and Monte Carlo Methods | |
| Pages 64-79 | ||
| Ahmed Mohamed ElMelegy | ||
