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김복현,유승희 경희대학교 체육과학연구소 1997 體育學論文集 Vol.25 No.-
The purpose of this study was to estimate change of leukocyte subsets on the increased maximal exercise load during the time of exercise intensity and after all-out and recovery. On a sample of 14 male collegiate students they were subdivided into two group(7 athletes group, 7 normal students group). Number of leukocytes increased from rest through All-out exercise intensity and decreased at recovery. Resting levels were again reached after 60 mins of recovery. There were no significant differences between groups. The rate of increase was significantly higher(p<.01) for the athlete group during 40%, 60%, 80%and All-out and exercise intensities. Percent of neutrophils decreased for both groups until All-out time, but the absolute number of neutrophils increased at each level of exercise intensity and reached maximum level during All-out time. There were no statistically significant differeneces between two groups for the percent and absolute number of neutrophils. The rate of increase was significantly higer (p<.05) for the athlete group at 80% exercise intensity. Percent and absolute number of lymphocytes increased from rest to All-out time but decreased at recovery. Although there was no difference for the rate of increase between the two groups, absolute number of lymphocytes was significantly higher(p<.05) for the athlete group from 40% to All-out exercise intensity. Based on those results mentioned above, the follwing conclusion can be reach: Absolute number and percent of leukocyte subsets changes during graded maximal exercise. Specifically absolute number of leukocyte subsets increased from rest to all-out exercise.
주성분분석에 의한 $A_{2}O$ 수식 이미지공법의 처리성 평가
김복현,이재형,이수환,윤조희 한국환경보건학회 1992 한국환경보건학회지 Vol.18 No.2
The lab-scale biological A$_{2}$O system was applied from treating piggery wastewater highly polluted organic material which nitrogen and phosphorous are much contained relatively in conversion with other wastewater. The objective of this study was to investigate the effect of variance parameters on the treatability of this system according to operation conditions. An obtained experimental data were analysed by using principal component analysis (PCA) method. The results are summarized as follows: 1. From Varimax rotated factor loading in raw wastewater, variance of factor 1 was 36.8% and cumulative percentage of variance from factor 1 to factor 4 was 81.5% and of these was related to BOD, TKN and BOD loading. 2. In anaerobic process, variance of factor 1 was 33.5% and cumulative percentage of variance from factor I to factor 4 was 81.8% and of these was related to PO$_{4}$-P, BOD, DO and Temperature. 3. In anoxic process, variance of factor 1 was 30.1% and cumulative percentage of variance from factor i to factor 4 was 84.3% and of these was related to pH, DO, TKN and temperature. 4. In aerobic process, variance of factor 1 was 43.8% and cumulative percentage of variance from factor 1 to factor 4 was 81.5% and of these was highly related to DO, PO$_{4}$-P and BOD. 5. It was better to be operated below 0.30 kg/kg$\cdot$day F/M ratio to keep over 90% of BOD and SS, 80% of TKN, and 60% of PO$_{4}$-P in treatment efficiencies. 6. Treatment efficiencies was over 93% of BOD and SS, 81% of TKN and 60% of PO$_{4}$-P at over 20$^{\circ}$C, respectively.