In this study, we investigated a method for measuring the distribution of aromatic odor. The reactions of four types of semiconductor gas sensors were measured using citrus note fragrances, odorless solvents, and aromatic liquid mixed with fragrances and solvents. As a result, the ammonia-sensitive gas sensor did not react to a solvent which human cannot detect. This sensor reacted with fragrances and aromatic liquid that human can detect. In addition, the reaction of the aromatic liquid with to each odor concentration was measured using 31 ammonia-sensitive gas sensors. The relational equation between the odor concentration and the resistance ratio of the gas sensors was obtained. The correlation coefficient between the odor concentration and the resistance ratio of the gas sensors was 0.75 or more in 31 sensors. Using 31 gas sensors, the distribution of aromatic odor in the laboratory was measured. Using the relational equation between the gas sensor resistance ratio and the odor concentration, we found the possibility of measuring the distribution of odor corresponding to the human odor sensation.

This study analyzed two firefighter groups, the heavy bodyweight (HBW) and the light body weight (LBW) groups. The main aim was to evaluate the physiological responses of these two groups during the personal protective equipment standard test. Furthermore, the differences in the physiological responses between the two groups were hypothesized. All groups performed a 5.5 km∙hr ^-1 treadmill exercise under 0.967 Kg sports attire as a control condition (CON) and 18.974 Kg personal protective equipment as the PPE condition (PPE), at air temperatures (T_a) of 32℃ and 60% relative humidity (RH), respectively. The result showed that the hypothesis was rejected since no differences in physiological responses were found between HBW and LBW groups. The differences only occurred within each group when PPE or control clothing was used. The physical condition of the volunteers was similar due to their daily structured exercise despite differences in body weight between both groups. Therefore, the bodyweight of volunteers is not a relevant issue, provided they are well trained for the standard PPE test.