In this study, 102 residents in Gwangyang and Yeosu were evaluated for exposure to levels of urethral arsenic from April 2017 to June 2018. The geometric mean concentration of the urinary arsenic in the total studied was 154.30 μg/L, with the figure for the Gwangyang area being 201.18 μg/L and the figure for the Yeosu area being 200.21 μg/L, which signifies that there was no real difference between the two regions. The figures for males and females were 173.81 μg/L and 136.98 μg/L, respectively, indicating higher levels for males. In the case of males, the risk assessment of arsenic (As) showed that 0.54 does not exceed 1 and approximately 11.3% exceeded the reference value. For women, the number of hazardous materials did not exceed 1.41 and approximately 5.1% exceeded the reference value of the total arsenic exposure survey.

In this study, 40 residents of the Gwangyang and Yeosu areas were assessed for their level of exposure to heavy metals (As, Cd, Ni) from April 2017 to June 2018. The aim was to understand the differences in levels of indoor exposure to heavy metals (As, Cd, Ni), and a health risk assessment was conducted to determine whether there was any fatal cause from carcinogenic elements. The mean concentrations of PM10 particles indoors were As 0.24 μg/m3, Cd 0.07 μg/m3, and Ni 0.89 μg/m3. The health risk assessment for the arsenic, cadmium, and nickel in indoor air confirmed that the mean values exceeded the cancer risk tolerances specified by the U.S. EPA, for As (males 3.07 × 10−4, females 3.35 × 10−4), Cd (males 3.83 × 10−5, females 4.18 × 10−5), and Ni (males 6.36 × 10−5, females 6.95 × 10−5).

In this study, we measured the concentration of Particulate Matter(PM10), Formaldehyde(HCHO), and Total Bacteria Count (TBC) at two facilities: day care centers, and postnatal care centers located in the cities of Gyeonggi, Gangwon, Jeolla and Gyeongsang from January 1, 2012 to December 31, 2015. PM10 concentration was similar to the day care centers and postnatal care centers. HCHO concentration was the highest in the postnatal care centers. TBC concentration was the highest in the day care centers. Comparing the different cities, PM10 concentration was the highest in Gyeonggi, HCHO concentration was the highest in Gyeonggi, and TBC concentration was the highest in Gyeonggi. As a result of HCHO's risk assessment, it was found that adults exceeded the carcinogenicity tolerance of 10−6 specified by the US EPA. This study is expected to be helpful in preventing damage to health from the contaminated indoor air at sensitive facilities, and can be used as basic data for indoor air quality management.

In this study, we measured the concentration of Particulate Matter (PM10), Formaldehyde (HCHO), and Total Bacteria Count (TBC) at three facilities: elderly care centers, day care centers, and postnatal care centers located in the cities of Seoul, Sejong, Daegu and Ulsan from January 1, 2012 to December 31, 2015. PM10 concentration was the highest in the day care centers and HCHO concentration was the highest in the postnatal care centers. TBC concentration was the highest in the day care centers. Comparing the different cities, PM10 concentration was the highest in Sejong, HCHO concentration was the highest in Seoul, and TBC concentration was the highest in Daegu. This study is expected to be helpful in preventing damage to health from the contaminated indoor air at sensitive facilities, and can be used as basic data for indoor air quality management.

This study was conducted targeting 30 residents of Gwangyang industrial complex area from April to May 2017 to assess their level of exposure to VOCs and conduct a health risk assessment for individual exposure. The aim was to understand the difference in levels of indoor, outdoor and personal exposure to VOCs (benzene, toluene, ethylbenzene, m-xylene, p-xylene, o-xylene) and a health risk assessment was conducted to determine whether there was any fatal cause from carcinogenic or non-carcinogenic elements from a respiratory disease patients. In the case of benzene in the air, the geometric levels of the group are indoor, outdoor and personal exposure; on the CTE, RME condition and Monte-Carlo analysis, all subjects were seen to exceed the carcinogenicity tolerance of 10−6 specified by the US EPA. In the case of toluene, ethylbenzene, m-xylene, p-xylene, o-xylene on the CTE, RME condition and Monte-Carlo analysis, the non-carcinogenic standard of 1 was not exceeded.

This study was carried out to investigate the presence of a correlation between heavy metals in urine samples and upper airway diseases. For the study, 51 household residents of Gwangyang, both with and without upper airway disease, were targeted. Urine samples were collected from the subjects along with a questionnaire from April 24th to 27th, 2017. The heavy metals in the urine samples were preprocessed and analyzed using an inductively coupled plasma/mass spectrometer. The geometric mean concentration of urinary arsenic and cadmium was 138.66 μg/L and 0.75 μg/g creatinine among those with upper airway disease and 166.42 μg/L and 1.19 μg/ g creatinine among those without upper airway disease. This was not a statistically significant difference. The concentration of urinary arsenic and cadmium was found to be increased by 1.19 times (95% CI; 0.15-9.31) and 1.26 times (95% CI; 0.31-5.04) in household residents with upper airway diseases with more than 144.86 μg/L and 0.85 μg/g creatinine, respectively.

The purpose of this study was to evaluate the concentration of airborne particulate matter and heavy metals in the houses of the respiratory tract disease patients and a control group of residents in the city of Gwangyang. The particulate matter was measured using a mini-volume air sampler and then weighed three times using a micro balance to calculate the weighted average value. The heavy metals in the particulate matter were extracted using a hot plate and analyzed using an inductively coupled plasma/mass spectrometer. The average concentration of particulate matter in the outdoor air (34.478 μm/m3) was higher than that in the indoor air (16.794 μm/m3), showing a statistically significant difference (p<0.001). The average concentration of copper, manganese and chromium in the indoor and outdoor air were higher in the houses of those in the study group than those of the control group. In addition, there was a generally high correlation between particulate matter in the outdoor air and heavy metals in the indoor and outdoor air concentration (p<0.05).

The objectives of this study were to investigate the effects of PM10 and O3 concentration on the symptoms of allergic diseases. The questionnaire was used to determine whether or not symptoms of allergic diseases were present from September to October 2012. The air pollution concentration data used was the corresponding point CEM (continuous emission monitoring) data. The average concentration of PM10 was 56.09 μg/m3 in the control area, and the concentration in the exposed area was 40.44 μg/m3. In the two areas, concentration of O3 was 28.73 ppb and 28.74 ppb, respectively. The total average concentrations of PM10 and O3 were 45.66 μg/m3 and 28.73 ppb in the Gwangyang area. The rate of asthma diagnosis was higher in the control area (9.6%) than in the exposed area (4.1%), but the rate of allergy eye disease was higher in the exposed area (23.9%) than in the control area (16.5%). There was a significant difference in the symptoms of some allergic diseases when the relative concentration of PM10 and O3 were high and low.

In this study, the distribution of each facility group, the pollution level of local municipalities and the status of self-measurement were investigated and analyzed using data provided by the Ministry of Environment. It was found that most of the workplaces to be managed are facilities of sensitive class, indoor parking lots and largescale stores. The results of the survey on the total pollution level by facility group showed that the rate of contamination was the highest in the facilities where there are many sensitive users, including the subway station and the underground shopping malls. Through self-measurement, in the case of fine particle matter, it was found that it was present in amounts of 51.71 μg/m3, 50.72 μg/m3, 44.47 μg/m3 and 54.44 μg/m3 in medical institutions, day care centers, elderly care facilities and postnatal care centers, respectively. Also, there were facilities exceeding the standard in the medical institutions. However, most of the pollutants in the facilities surveyed by the municipality are higher than the self-measured concentrations, so it is necessary to examine the cause of such pollution.

In this study, we analyzed the concentration of cadmium and mercury in urine and lead in blood from 668 residents in the exposed and compared areas in Gwangyang-si and Yeosu-si, from July 2013 to December 2015. According to the lifestyle (past smoking, current smoking, passive smoking, drinking and exercise), the concentration of cadmium in urine was higher in the compared areas than in the exposed areas in Gwangyang. However, the concentration of cadmium in urine according to the lifestyle except drinking was higher in the exposed areas than in the compared areas in Yeosu. According to the past smoking and current smoking, the concentration of mercury in urine was higher in the compared areas than in the exposed areas in Gwangyang, but the passive smoking, drinking and exercise showed similar concentration levels both in the exposed and compared areas in Gwangyang. The concentration of mercury in urine according to the past smoking and current smoking was higher in the exposed areas than in the compared areas in Yeosu, but the concentration of mercury in urine according to the drinking and exercise was lower in the exposed areas than in the compared areas in Yeosu. According to the past smoking, the concentration of lead in blood showed similar concentration levels in the exposed and compared areas in Gwangyang, but regarding current and passive smoking, it was higher in the compared areas than in the exposed areas in Gwangyang. Especially, the concentration of lead in blood according to the drinking in Gwangyang showed statistically significant difference (p<0.05). The concentration of lead in blood according to the lifestyle was higher in the compared areas than in the exposed areas in Yeosu.

우엉 분말의 첨가량을 0, 2, 4, 6, 8%로 달리하여 쿠키를 제조한 후 이화학적 품질 및 소비자 기호도를 조사하였다. 쿠키 반죽의 pH는 우엉 분말의 첨가량이 증가함에 따라 유의적으로 감소하였고(P<0.05), 밀도는 유의적 차이가 나타 나지 않았다(P>0.05). 쿠키의 퍼짐성과 수분함량은 우엉 분말이 첨가농도에 따라 증가하는 경향을 보였으나 유의적 차 이는 없었다(P>0.05). 손실률은 우엉 분말의 첨가량이 증가함에 따라 감소하였으나 일부 첨가군 사이에서 유의적인 차 이가 발견되지 않았다(P>0.05). 한편 명도(L*), 황색도(b*) 및 적색도(a*)는 우엉 분말의 첨가량이 증가할수록 유의적으 로 감소하였으며(P<0.05), 경도 또한 유의적으로 감소하였다(P<0.05). 소비자 기호도 검사 결과, 전체적인 기호도에서 2% 첨가군이 다른 쿠키에 비해 높게 평가되었으며, 따라서 쿠키의 물리적 특성과 관능적 품질 등을 고려할 때 쿠키 제조 시 밀가루에 대한 우엉 분말의 최적 대체량은 2%가 적합한 것으로 판단된다.

Background: Assessments of Sit-to-Stand (STS) and gait functions are essential procedures in evaluating level of independence for the patients after stroke. In a previous study, we developed the software to analyze center of pressure (COP) in standing position on Wii Balance Board (WBB). Objects: This purpose of this study is to measure test-retest reliability of ground reaction forces, COP and time using WBB on STS and gait in healthy adults. Methods: Fifteen healthy participants performed three trials of STS and gait on WBB. The time (s), vertical peak (%) and COP path-length (㎝) were measured on both tasks. Additionally, counter (%), different peak (%), symmetry ratio, COP x-range and COP y-range were analyzed on STS, 1st peak (%), 2nd peak (%) of weight were analyzed on gait. Intra-class correlation coefficient (ICC), standard error measurement (SEM) and smallest real difference (SRD) were analyzed for test-retest reliability. Results: ICC of all variables except COP path-length appeared to .676∼.946 on STS, and to .723∼.901 on gait. SEM and SRD of all variables excepting COP path-length appeared .227∼8.886, .033∼24.575 on STS. SEM and SRD excepting COP path-length appeared about .019∼3.933, .054∼11.879 on gait. Conclusion: WBB is not only cheaper than force plate, but also easier to use clinically. WBB is considered as an adequate equipment for measuring changes of weight bearing during balance, STS and gait test which are normally used for functional assessment in patients with neurological problems and elderly. The further study is needed concurrent validity on neurological patients, elderly patients using force plate and WBB.

This study was conducted to develop and evaluate an appropriate control device for a purge type controlled atmosphere (CA) storage in Korea. To determine ideal performance, oxygen and carbon dioxide control capability and airtightness were analyzed according to the postharvest management manual of CA storage of Fuji apples. In shortened experiments for CA storage, the condition was delayed CA at 0-0.5oC for three days and stored at 0.1-0.5% carbon dioxide levels for 3 days and then further stored 6 days under 1% carbon dioxide. As a result, the temperature control range of a developed CA container was 0.0-0.5oC, and the relative humidity was more than 90%, except for the defrosting step for the freezer during the storage period. The rate of pressure reduction for the CA container in the negative and positive pressure states was 0.45 and 0.21 mmH2O/min, respectively, and it was twofolds higher than standard airtightness for CA storage. After nitrogen injection, oxygen concentration was achieved at 2%, and carbon dioxide concentration was maintained at 0.1-0.5% for 6 days. Afterwards, carbon dioxide levels were tightly controlled between 0.1-1.0%. These results suggest that a developed purge type CA container could be effective in commercially maintaining the quality of agricultural products.

본 연구는 국내 진출 외국기업과 국내기업의 인적자원관리가 기업경영성과 및 노사관계에 미치는 영향을 분석한다.2005-2009년간의 사업체 패널자료를 사용하였고 확률효과모형(RadomEffectModel)을 활용하고 있다.주요 분석결과는 다음과 같다.기업의 근로자 수가 많을수록 당기매출액과 영업이익이 높으며 외국기업의 경우 기업규모가 클수록 이직률이 낮은 것으로 나타났다. 한편, 국내기업의 경우 임금수준이 높더라도 이직률이 높게 나타나고 있는데 이는 국내기업에서의 이직률은 단순한 임금수준에 의해 결정되는 것이 아니라 업무강도나 환경 등 다양한 요소에 의해 결정되기 때문으로 파악된다.인력계획을 실시하면 국내기업의 경우 당기매출액과 영업이익이 높아지는 것으로 분석되었다.근로자 중 여성비율이 높을수록 당기매출액과 영업이익에는 부정적인 영향을 미친 것으로 분석되었다. 다면평가제를 실시할 경우 대체로 매출액,영업이익은 물론이고 노사관계에도 긍정적인 것으로 나타났다. 마지막으로 근참법에 근거한 노사협의회가 실질적으로 유지될수록 노사관계가 원만하며 근로자들의 이직률도 낮출 수 있는 것으로 분석되었다.

본 연구는 무용전공 고등학생들의 완벽주의와 무용 내적동기의 관계에서 스트레스 대처의 매 개효과를 검증하는 데 목적을 두었다. 이에 따라, 예술고등학교에서 무용을 전공하는 197명 학 생들의 완벽주의, 스트레스 대처, 내적동기를 설문조사를 통하여 측정하였다. 자료의 분석은 기 술통계와 상관분석과 함께 스트레스 대처의 매개효과 검증을 위해 위계적 회귀분석을 실시하였 으며, 매개효과의 통계적 유의성을 검증하기 위해 Sobel test를 실시하였다. 위계적 회귀분석 결 과, 대처의 하위요인 중 문제중심, 정서중심, 회피 대처가 완벽추구성향(striving for perfection)과 내적동기의 관계를 통계적으로 유의하게 부분 매개하는 것으로 나타났다. 불완벽에 대한 부정적 반응(negative reactions to imperfection)과 내적동기의 관계에서는 문제중심적 대처와 회피 대처의 유의한 매개효과가 확인되었다. 이러한 결과에 따라 본 연구는 완벽주의 성향을 가진 무용전공 고등학생들이 문제중심적인 대처를 사용할 때 무용에 대한 내적동기를 더욱 증진시킬 수 있다 는 사실을 논의하고, 미래연구방향을 제시하였다.

The objective of this study was to determine the quality characteristics of cabbage juice fermented by lactic acid bacteria from Kimchi (Leuconostoc mesenteroides, Lactobacillus sakei SL1103, Lactobacillus plantarum LS5, and mixed starter). Cabbage juice was inoculated with lactic acid bacteria and fermented at 30 for 72 hrs. Changes in lactic acid bacteria number, pH, titratable acidity, Brix, and color during fermentation were analyzed. After fermentation for 24 hrs, cabbage juice fermented by mixed starter showed the highest number of lactic acid bacteria (9.45 log CFU/mL). The pH of all cabbage juice also decreased to 3.88~4.19 sharply, while cabbage juice fermented by Lac. sakei SL1103 showed the highest Brix (8.38˚Bx). Cabbage juice fermented by mixed starter showed the highest L value (56.83). In the sensory evaluation, cabbage juice fermented by a mixed starter (Leu. mesenteroides, Lac. sakei SL1103, and Lac. plantarum LS5) showed the highest preferences in taste, flavor, and overall acceptability. Therefore, cabbage juice fermented by mixed starter (Leu. mesenteroides, Lac. sakei SL1103 and Lac. plantarum LS5) has the highest potential for the development of fermented cabbage juice as an excellent bioactive functional food.