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        검색결과 9

        1.
        2018.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        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.
        4,000원
        2.
        2018.04 구독 인증기관·개인회원 무료
        Calcium is widely used for calcium supplement, additives. In the case of oyster shell which is intaked for calcium supplement have caused serious problems including environmental pollution because almost of it is thrown out so that is demanded expanding of using. However, there is no examples that develop a high value product available for food industry from oyster shell. In advanced research, It is confirmed that fired oyster shell has Anti-microbial effect and therefore, this study apply the anti-microbial effect of fired oyster shell to rice cake. Control is made by rice flour 300g, water 150mL. Experimental group are made by rice flour 300g, water150mL and Sample A (fired oyster shell), Sample B (fibrous calcium carbonate), Sample C (calcium + citric acid) and Sample D (coral calcium) 0.5wt% respectively. Texture properties are measured by texture analyzer (TA-XT, MHK corp. Korea) 5kg load cell. Rice cake added sample A, B, C had anti-microbial effect and rice cake added sample D had not anti-microbial effect.
        3.
        2018.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        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.
        4,000원
        4.
        2017.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        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).
        4,000원
        5.
        2017.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        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.
        4,000원
        6.
        2017.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        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.
        4,000원
        7.
        2017.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        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.
        4,000원
        8.
        2016.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        We measured VOCs and NO2 in the indoor and outdoor air at 125 houses in Jeollanam-do and Gyeongsangnamdo, from March 2007 to January 2008. The concentration of benzene measured in the Gwangyang survey group was higher than in Yeosu and Hadong, and showed a statistically significant difference from Yeosu (p<0.05). The concentration of toluene in outdoor air was highest in the Gwangyang survey group. The concentration of NO2 measured in the Yeosu survey group was higher than in Gwangyang and Hadong, and showed a statistically significant difference from Hadong (p<0.01). According to the results of a correlation analysis, VOCs (benzene, toluene, xylene, ethylbenzene) exposure of individuals showed a significant correlation with the residential indoor air (p<0.01). Also, VOCs of residential indoor and outdoor air showed a significant correlation (p<0.01). The concentration of NO2 exposure of individuals measured in the Yeosu comparison group showed a high correlation with the residential indoor air.
        4,200원
        9.
        2016.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The concentration of VOCs, NO2 was measured both inside and outside residential homes surrounding an industrial complex. Measurements were performed in the area of the industrial complexes and around 10 km away from the industrial complex area. Benzene did not exceed the air quality standard value. Toluene exhibited a high value of concentration in outdoor Yeosu investigated group. The concentration of NO2 is higher than outside concentrations of houses in both inside housing research group compared with the group of Gwangyang and Yeosu. Benzene and toluene showed high correlation (p<0.001) in the housing interior in Gwangyang, It showed a high correlation (p<0.01) in the housing interior in the comparison group. In Yeosu there was a high correlation (p<0.001) between the inside and outside of the housing in the survey group. In the control group there was only high correlation (p<0.05) in the inside of the housing.
        4,000원