Table 1. Mean (SD) of environmental and physiological parameters in different sections .
| Variable |
Material
handling |
Kiln |
Working on
conveyor |
Tempering
and molding |
Total | |
| Indoor | Outdoor | |||||
| Environmental factors | ||||||
| Dry-bulb temperature (ºC) | 37.55 (2.25) | 44.28 (3.39) | 37.29 (2.68) | 37.27 (1.14) | 35.8(1.85) | 39.08 (4.03) |
| Globe temperature (ºC) | 45.25 (1.98) | 52.15 (5.56) | 45.12 (2.30) | 45.01 (1.32) | 43.57(2.86) | 46.86 (4.68) |
| Natural wet bulb temperature (ºC) | 20.74 (1.67) | 25.70 (2.32) | 20.66 (2.13) | 20.6 (0.86) | 19.29 (1.40) | 21.88 (2.95) |
| Relative humidity (%) | 17.78 (4.89) | 35.61 (13.34) | 19.19 (3.67) | 17.08 (3.68) | 19.14 (2.99) | 22.75 (11.09) |
| Air velocity (m/s) | 0.21 (0.159) | 0.06 (0.042) | 0.32 (0.22) | 0.16 (0.03) | 0.44 (0.22) | 0.2 (0.17) |
| Physiological parameters | ||||||
| Heart rate (beat/min) | 74.98 (10.19) | 77.5 (8.85) | 75.43 (7.59) | 73.56 (9.65) | 74.54 (11.50) | 75.33 (9.70) |
| Systolic blood pressure (mmHg) | 127.23 (13.28) | 129.86 (13.45) | 129.85 (10.36) | 126.74 (14.83) | 125.66 (14.22) | 127.88 (13.53) |
| Diastolic blood pressure (mmHg) | 75.58 (12.95) | 81.34 (11.08) | 83.35 (0.52) | 80.85 (9.16) | 78.03 (9.55) | 79.17 (11.07) |
| Oral temperature (ºC) | 36.38 (0.44) | 36.92 (0.34) | 36.71 (0.85) | 36.23 (0.34) | 36.91 (1.01) | 36.58 (0.61) |
| Carotid artery ear temperature (ºC) | 36.28 (0.35) | 36.83 (0.36) | 36.45 (0.46) | 36.15 (0.30) | 36.36 (0.38) | 36.43 (0.44) |
| Skin temperature (ºC) | 35.63 (0.49) | 36.35 (0.40) | 35.75 (0.62) | 35.42 (0.44) | 36.27 (0.71) | 35.86 (0.63) |