The purpose of this study was to verify the change in temperature·humidity·perspiration of fire suit when applying phased intensive exercises to fire fighter wearing fire suit. For this study, three male fire fighters took basic physical test and performed 10 minute phased intensive exercises -exercise intensity I (30%VO2max), exercise intensity II (45%VO2max), exercise intensity III (60%VO2max) based on maximum oxygen consumption (VO2max)- wearing fire suit (helmet, boots, air respirator) in treadmill and took a rest. The result of study shows that the temperature in the suit elevated during stabilization period after each exercise intensity, humidity elevated as exercise intensity increased, perspiration elevated as exercise intensity increased.

원목재배사에서 4월 중에 관리하지 않은 경우 높이에 따른 온도는 지표면-120cm 높이가지 20~22도로 차이가 없었고, 습도 또한 내우 낮은 30~32%였다. 자연적으로 발생된 버섯은 수분이 너무 적어서 화고이나 작았다. 이슬점은 바닥에 서 1.5~6도로 낮은 반면에 버섯의 온도가 12.8~15.0도로 버섯이 메마른 상태가 되었다. 버섯은 상대습도에 크게 좌우되므 로, 지면에서 높아질수록 수분관리가 불리하게 되며 통풍으로서 습도를 균질화 시킬 필요가 있다. 한편 관리된 재배사에서는 온도가 12~17도에 이르며, 상대습도는 45~68%로, 바닥에 가까운 높이에서는 버섯온도가 거 의 이슬점에 도달하여 과습할 정도였다. 오히려 통풍이 필요한 상태였다. 특히 2월 중에 원목을 보온하기 위하여 비닐 을 씌 운 경우는 8~20도, 상대습도는 43~79%였다.

This study was conducted to determine the effects of the humidity and gas composition on the quality of satsuma mandarins during their heat treatment, in an effort to reduce their acidity. To come up with different humidity and gas conditions, various plastic films were used. The fruits were wrapped with an 18-μm high-density polyethylene (HDPE) punched film, a 30-μm low-density polyethylene (LDPE) film, or a 100-μm LDPE film just before treatment at 30℃ for 55 hours. After heat treatment, the titratible acidity (TA) was significantly reduced while the soluble-solid content (SSC) showed no differences, which resulted in increased SSC/TA ratios in all the treatments. The fruits that were not wrapped with a film, however, which had low RH, developed higher ethanol and acetaldehyde contents than those wrapped with an 18-μm HDPE punched film, which had high RH and a similar gas composition. Among the films, the higher the CO2 concentration in the film was, the more the ethanol and acetaldehyde contents increased, which induced more off-flavor. It was thus concluded that high humidity and normal gas composition are favorable conditions for heat treatment to reduce the acidity of satsuma mandarins.