• 산업융합연구
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• 제20권3호
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• pp.73-79
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• 2022

본 연구는 발달장애 아동의 심리운동센터 이용 부모의 선택 동기, 만족도, 재이용 의사의 관계를 검증하고자 하였다. 이를 위해 수도권 소재의 사설 심리운동센터에서 심리운동프로그램에 참여하고 있는 아동의 부모를 대상으로 설문조사를 실시하였다. 수집된 자료는 188부이며, 서술통계, 요인분석과 신뢰도분석 그리고 상관분석과 회귀분석을 통하여 인과관계를 검증하였다. 분석 결과 다음과 같은 결론을 얻었다. 첫째, 발달장애 아동의 심리운동 참여에 대한 부모님의 선택동기와 만족도 관계에서 하위요인인 이용만족은 즐거움과 사교요인, 성과만족에서는 사교, 건강과 체력요인에서 유의미한 영향력을 나타내었다. 둘째, 선택 동기와 재이용 의사의 관계에서 즐거움, 기술발달 및 성취감, 사교요인에서 유의미한 영향력을 나타내었다. 셋째, 만족도와 재이용 의사의 관계에서 이용만족과 성과만족 요인에서 재이용 의사를 유의미하게 설명하였다. 향후 심리운동센터 재이용률을 높이기 위해 본 연구의 측정변인 외에 추가적인 분석이 필요하다고 판단된다.

• 분석과학
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• 제20권2호
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• pp.147-154
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• 2007

잠재지문의 효과적인 현출법의 기초자료로 활용하기 위하여 지문과 관계되는 땀의 성분분석을 실시하였다. 땀의 성분을 분석한 결과 총 단백질은 $46{\sim}122{\mu}L/mL$로 개인차가 있고, 검출된 아미노산의 분포도 개인에 따라 그 차이가 있으며, 주로 glycine($4.7{\sim}19.0{\mu}L/mL$), threonine($1.3{\sim}26.0{\mu}L/mL$), alanine($0{\sim}13.5{\mu}L/mL$), valine($0{\sim}8.0{\mu}L/mL$) 그리고 histidine($0{\sim}13.2{\mu}L/mL$) 등이 검출되었다. 양이온의 경우 Na이 3078.6~4815.6 ppm으로 가장 높은 함량을 보였고, K이 267.3~823.9 ppm이었으며, Ca(15.4~44.7 ppm)과 Mg(4.13~8.96 ppm)으로 조사되었다. 음이온 중에는 $Cl^-$(2167~4073 ppm)와 $F^-$(454~582 ppm)가 주로 검출되었다. 미량 원소는 Rb(132~824 ppb), Zn(90~1846 ppb)와 Cu(17~415 ppb)가 주로 검출 되었으며, 그 양 역시 개인 간의 차이가 크게 나타나므로 지문 현출에 다양한 방법이 요구되어 진다.

• The Korean Journal of Physiology
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• 제1권1호
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• pp.103-120
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• 1967

As pointed out by many previous investigators, the cardio-pulmonary system of well trained athletes is so adapted that they can perform a given physical exercise more efficiently as compared to non-trained persons. However, the time course of the development of these cardio-pulmonary adaptations has not been extensively studied in the past. Although the development of these training effects is undoubtedly related to the magnitude of an exercise load which is repeatedly given, it would be practical if one could maintain a good physical fitness with a minimal daily exercise. Hence, the present investigation was undertaken to study the time course of the development of cardio-pulmonary adaptations while a group of non-athletes was subjected to a daily 6 to 10 minutes running exercise for a period of 4 weeks. Six healthy male medical students (22 to 24 years old) were randomly selected as experimental subjects, and were equally divided into two groups (A and B). Both groups were subjected to the same daily running exercise (approximately 1,000 kg-m). 6 days a week for 4 weeks, but the rate of exercise was such that the group A ran on treadmill with 8.6% grade for 10 min daily at a speed of 127 m/min while the group B ran for 6 min at a speed of 200 m/min. In order to assess the effects of these physical trainings on the cardio-pulmonary system, the minute volume, the $O_2$ consumption, the $CO_2$ output and the heart rate were determined weekly while the subject was engaged in a given running exercise on treadmill (8.6% grade and 127 m/min) for a period of 5 min. In addition, the arterial blood pressure, the cardiac output, the acid-base state of arterial blood and the gas composition of arterial blood were also determined every other week in 4 subjects (2 from each group) while they were engaged in exercise on a bicycle ergometer at a rate of approximately 900 kg m/min until exhaustion. The maximal work capacity was also determined by asking the subject to engage in exercise on treadmill and ergometer until exhaustion. For the measurement of minute volume, the expired gas was collected in a Douglas bag. The $O_2$ consumption and the $CO_2$ output were subsequently computed by analysing the expired gas with a Scholander micro gas analyzer. The heart rate was calculated from the R-R interval of ECG tracings recorded by an Offner RS Dynograph. A 19 gauge Cournand needle was inserted into a brachial artery, through which arterial blood samples were taken. A Statham $P_{23}AA$ pressure transducer and a PR-7 Research Recorder were used for recording instantaneous arterial pressure. The cardiac output was measured by indicator (Cardiogreen) dilution method. The results may be summarized as follows: (1) The maximal running time on treadmill increased linearly during the 4 week training period at the end of which it increased by 2.8 to 4.6 times. In general, an increase in the maximal running time was greater when the speed was fixed at a level at which the subject was trained. The mammal exercise time on bicycle ergometer also increased linearly during the training period. (2) In carrying out a given running exercise on treadmill (8.6%grade, 127 m/min), the following changes in cardio·pulmonary functions were observed during the training period: (a) The minute volume as well as the $O_2$ consumption during steady state exercise tended to decrease progressively and showed significant reductions after 3 weeks of training. (b) The $CO_2$ production during steady state exercise showed a significant reduction within 1 week of training. (c) The heart rate during steady state exercise tended to decrease progressively and showed a significant reduction after 2 weeks of training. The reduction of heart rate following a given exercise tended to become faster by training and showed a significant change after 3 weeks. Although the resting heart rate also tended to decrease by training, no significant change was observed. (3) In rallying out a given exercise (900 kg-m/min) on a bicycle ergometer, the following change in cardio-vascular functions were observed during the training period: (3) The systolic blood pressure during steady state exercise was not affected while the diastolic blood Pressure was significantly lowered after 4 weeks of training. The resting diastolic pressure was also significantly lowered by the end of 4 weeks. (b) The cardiac output and the stroke volume during steady state exercise increased maximally within 2 weeks of training. However, the resting cardiac output was not altered while the resting stroke volume tended to increase somewhat by training. (c) The total peripheral resistance during steady state exercise was greatly lowered within 2 weeks of training. The mean circulation time during exorcise was also considerably shortened while the left heart work output during exercise increased significantly within 2 weeks. However, these functions_at rest were not altered by training. (d) Although both pH, $P_{co2}\;and\;(HCO_3-)$ of arterial plasma decreased during exercise, the magnitude of reductions became less by training. On the other hand, the $O_2$ content of arterial blood decreased during exercise before training while it tended to increase slightly after training. There was no significant alteration in these values at rest. These results indicate that cardio-pulmonary adaptations to physical training can be acquired by subjecting non-athletes to brief daily exercise routine for certain period of time. Although the time of appearance of various adaptive phenomena is not identical, it may be stated that one has to engage in daily exercise routine for at least 2 weeks for the development of significant adaptive changes.