• Parasites, Hosts and Diseases
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• 제59권3호
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• pp.281-289
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• 2021

This study aimed to characterize the seasonal abundance of hard ticks that transmit severe fever with thrombocytopenia syndrome virus from April to November 2019 and 2020 on Ganghwa-do, Incheon Metropolitan City, Korea. The ticks were collected at grassland, grave site, copse and mountain road using a collection trap method. The ixodid hard ticks comprising three species (Haemaphysalis longicornis, H. flava, and Ixodes nipponensis) collected were 6,622 in 2019 and 3,811 in 2020. H. longicornis was the most frequent (97.9% in 2019 and 96.0% in 2020), followed by H. flava (2.0% and 3.0% in 2019 and 2020, respectively) and I. nipponensis (less than 0.1%). Our study demonstrated that seasonal patterns of the tick populations examined for two years were totally unsimilar. The hard ticks tested using RT-qPCR were all negative for severe fever with thrombocytopenia syndrome virus.

• 한국환경과학회지
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• 제15권3호
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• pp.287-292
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• 2006

The purpose of this paper is to evaluate the noise level and source, reduce the subway line II noise. As a result of measurement of subway line II in Busan the highest value section of uproad line was from Jigegol to Motgol by 89 dB(A). The sections of conversation and listening interference(over 80 dB(A)) were 21 sections(55%) of 38 sections. Among these sections, 15 sections(71%) were produced rolling noise, 3 sections(14%) squeal noise, 2 sections(10%) braking noise and 1 section(5%) fan noise, and then a main noise source was the rolling noise. In case of downroad line, the highest value section was from Busan Metro Art Museum to Centum city, Motgol to Jigegol by 88 dB(A). The sections of conversation and listening interference(over 80 dB(A)) were 18 sections(47%) of 38 sections. Among these sections, 15 sections(83%) produced rolling noise, 2 sections(11%) squeal noise and 1 section(6%) braking noise were investigated in this study. and then a main noise source was the rolling noise.

• 한국대기환경학회지
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• 제25권5호
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• pp.459-471
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• 2009

Air Monitoring Network(11 urban stations) is operated to measure ambient air quality in Daegu city. The urban air monitoring stations include 6 in residence area, 3 in industrial area, 1 in commercial area, and 1 in green area. In this study, hourly data (2006. 1. 1~2008. 12. 31) of $PM_{10}$ were measured at 11 urban air monitoring stations. $PM_{10}$ mean concentrations were high in fall and winter because of low wind speed and many haze days. The number of exceeding the daily standard of $PM_{10}$ in industrial area was approximately twice as many as that in residence area. $PM_{10}$ concentrations and visibility were influenced significantly by wind speed. Wind speed and visibility were below 1.8 m/s and 10 km, respectively when $PM_{10}$ concentrations were over $120{\mu}g/m^3$. $PM_{10}$ concentrations were high when haze was observed. The mean concentrations of $PM_{10}$ were $104{\pm}41.3{\mu}g/m^3$, $63{\pm}35.1{\mu}g/m^3$, and $49{\pm}26.9{\mu}g/m^3$, respectively when haze, mist and clear were observed.

• 공학교육연구
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• 제18권1호
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• pp.47-53
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• 2015

이 논문의 목적은 메가 시티 서울의 기술상용화 네트워크 도시 형성의 가능성을 고찰하는 데 있다. 1960년대 이후 우리나라는 국가적 차원에서 볼 때, 급속한 경제 성장을 경험하고 있지만, 지역적 차원에서 살펴보면, 서울을 포함한 수도권과 비수도권 간 심각한 지역불균등 발전을 경험하고 있다. 필자는 이와 같은 지역불균등 발전의 해결 방안으로 서울을 중심으로 기술상용화 네트워크 도시 형성의 필요성을 제시하고자 한다. 기술상용화 네트워크 도시는 남북도시협력 축(통일 R&BD 지향-복합기술 R&BD 축), 메가 시티 확장 축(녹색 수출 R&BD 지향-녹색 수출 R&BD 확장 축), 중소도시 연계 축(평창 올림픽 R&BD 지향-생명기술 R&BD축), 메갈로 폴리스 축(R&D-R&BD 연계 협력 지향-기초기술 R&BD 축) 등 4가지 축으로 이루어진다.

• International Journal of Internet, Broadcasting and Communication
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• 제12권1호
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• pp.95-103
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• 2020

In the study, we show the six metropolitan cities, Incheon Metropolitan City had the highest annual average rate(3.2%) of the death toll, from 2011 to 2018, and the overall annual average rise rate was 2.6%. Also, the annual average rise rate of the number of cremators using E-Haneul funeral information system, Gwangju Metropolitan City had the highest rate(7.6%) and the overall annual average rise rate was 5.6%. The annual average rise rate of the cremation rate, Gwangju Metropolitan City had the highest rate(2.8%) and the overall annual average rise rate was 1.9%. Focusing on the actual state shown in the results of this study above, the policy measures for improving the efficiency of supply & demand policy of funeral facilities in six metropolitan cities in the whole nation could be suggested as follows. First, expanding the supply of cremation facilitiesin consideration of the installation period of cremation facilities. Second, given the increase in the number of cremators using E-Haneul Funeral Information System, it is necessary to expand the infrastructure for meeting the demand of using funeral facilities, such as enshrinement facilities of ash and natural burial sites. Third, in such metropolitan cities, it is difficult to resolve a conflict of location with local residents who recognize cremation facilities as unpleasant facilities. Therefore, it is necessary to devise and implement a plan for improving local residents awareness of cremation facilities and resolving the conflict of location in diversified ways. Fourth, it is predicated that Busan and Daegu Metropolitan City will face a lack of supply of cremation facilities in a short time due to the increased demand for them. Therefore, in order to meet the demand for cremation, it is necessary to construct more cremation furnaces in current cremation facilities or to jointly use and expand cremation facilities with their neighboring local government.

• 한국동물위생학회지
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• 제35권4호
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• pp.313-319
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• 2012

Consumer's preference and microbial inspections on fresh raw beef were carried out to understand the actual market status in Gwanju, Korea. Over 15 questions on questionnaire by 1,111 randomly selected respondents between April and May in 2011, results showed 65.5% positive on eating fresh raw beef, 63.8% negative on good hygiene condition of fresh raw beef, and 72.5% positive on the secure of the hygiene-safety for priority program, respectively. For microbial inspections, a total of 302 samples were collected from fresh raw beef purchased from slaughterhouse (n=122), transport (n=69) and consumer (n=81) stage, from lettuce (n=30) at consumer stage. The aerobic plate count (APC), E. coli count and food borne bacteria such as Salmonella spp., Listeria monocytogenes, Staphylococcus(S.) aureus and E. coli O157:H7 were tested in the samples. As results, the level of count on APC of fresh raw beef ranged $6{\times}10^1{\sim}1.8{\times}10^5CFU/g$ from slaughterhouse, $2{\times}10^2{\sim}8.3{\times}10^5CFU/g$ from transport stage and $1{\times}10^2{\sim}4{\times}10^5CFU/g$ from consumer stage. The level of count on E. coli of fresh raw beef ranged $1{\sim}9{\times}10^1CFU/g$ from slaughterhouse, $1{\sim}7{\times}10CFU/g$ from transport stage and $1{\sim}5.5{\times}10CFU/g$ from consumer stage. In total, 26 S. aureus were isolated, 10 (14.5%) from fresh raw beef at transport stage, 12 (14.8%) from fresh raw beef and 4 (13.3%) from lettuce at consumer stage. Enterotoxin of S. aureus was not detected among 26 isolates. All S. aureus isolates were typed using a DiversiLab$^{TM}$ rep-PCR system for genetic similarity test, showing over 95% of genetic relationship amon isolates.

• 한국동물위생학회지
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• 제39권1호
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• pp.13-20
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• 2016

This study is aimed to find out distribution status of online-market livestock products by purchasing and examining 120 cases of livestock products (seasoned meat: 17, 33 cases of packaged meat, 23 cases of ground meat, 19 cases of ham, 11 cases of sausage, 4 cases of bacon, 1 case of meat processing, 8 cases of Meat extract processed, and 4 cased of Dry storage of meat) at 17 On-line markets from April to August. 2015. We checked the weight of them first, and carried out ingredients test for each of processed meats. And we performed gene screening test on the products which were labelled 'Hanwoo' to investigate that the products were made of Korean native cattle. we also carried out test of identifying domestic animal species on ham, sausage and ground processed products. After weighing all products, we could know that all of them were delivered more than labelled weight or in allowable error. The result values of test which measured level of preservatives, Nitrite, Volatile Basic Nitrite (VBN), and tar Color by the type of processed meat products were in permissible range or not detected. Also, 17 beefs inspected Korean native cattle gene test were confirmed that they were made by real korean native cattle. But 2 cases of Ham, sausage, and ground processed products had difference between label and goods. In this study, we could make a decision that livestock products, distributed in On-line markets, were safe and expect to make higher degrees of hygiene for livestock products seller. Futhermore, we hoped result of this study could be used by basic data for progressive national policy decisions.

• 대한환경공학회지
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• 제34권3호
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• pp.168-176
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• 2012

2011년 3월에 대구광역시의 대형유통업소주차장을 대상으로 총 48개의 먼지시료를 채취하여 100 ${\mu}m$ 이하로 걸러서 산추출한 후 ICP로 14개 원소를 분석하였다. 미량원소성분 중 Ca, Fe, K, Mg, Mn, Na, V는 자연적 발생원의 영향을, 그리고 Cd, Cr, Cu, Ni, Pb, Zn은 인위적 발생원의 영향을 받는 것으로 추정된다. 미량원소성분의 농도는 자연적 발생원 성분이 인위적 발생원 성분보다 뚜렷하게 높았고, 인위적 발생원 성분은 지상옥상이 지상실내와 지하실내보다 농도가 높았다. 미량원소성분의 조성백분율은 인위적 발생원 성분에 비해 자연적 발생원 성분이 대부분을 차지하였고, 인위적 발생원 성분은 지상옥상이 지상실내와 지하실내보다 함유율이 높았다. 주차장은 유해중금속오염이 거의 없는 수준을 보였고, 지상옥상은 지상실내와 지하실내보다 중금속오염도가 높았다. 미량원소성분간의 상관성은 지상옥상이 지상실내와 지하실내보다 양호한 상관성이 많았고, 인위적 발생원 성분은 주차장연수와 주차밀도와도 상관성이 양호하였다.

• 한국식품위생안전성학회지
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• 제36권3호
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• pp.257-263
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• 2021

식품별 알레르기 유발물질 표시사항을 모니터링하기 위해 돼지고기, 우유 등 14개의 종 특이 프라이머를 이용한 유전자 검출법(PCR)을 실시하였다. 초등학교 근처 문구점과 수입과자판매점을 대상으로 알레르기 유발물질에 대한 표시사항이 없는 과자, 캔디류, 초콜릿류 등 60건에 대한 검사를 진행하였으며 그 중 30건에서 우유, 밀, 달걀, 토마토, 아몬드, 땅콩이 검출되었다. 특히 수입제품에서는 알레르기 유발물질을 표시하지 않았거나 한글 표시가 없는 경우도 확인되었으며, 표시 항목 이외의 물질이 검출되는 등 표시 사항이 미흡한 제품들이 다수 확인되었다. 소비자들이 안심하고 제품을 구매할 수 있도록 알레르기 유발물질 표시 사항에 대해 국내 제조가공업체와 수입관련 업체의 계도 및 감시 등 관련 기관 간의 긴밀한 협조 체계가 유지되어야 할 것이다.

• 대한환경공학회지
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• 제36권7호
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• pp.498-505
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• 2014

본 연구는 대구광역시 산단지역 대기 중의 휘발성유기화합물 특성을 조사하였다. 산단지역은 비산단지역에 비해 톨루엔, 에틸벤젠, m,p-자일렌, o-자일렌 순으로 높은 농도차를 보였고, 벤젠과 클로로포름은 지역별로 뚜렷한 농도차가 없었다. 측정계절별로는 산단지역은 하고동저형을 보였다. 특히 화학물질 사용 영향으로 인해 산단지역은 측정요일별로는 평일이 휴일에 비해 높게 나타났고, 측정시간대별로는 가동시간을 포함한 오전, 오후 시간대가 상대적으로 높게 나타났다. VOCs 물질간의 상관성은 산단지역이 비산단지역에 비해 유의한 상관이 많았고, 기상인자와는 풍속이 VOCs와 음의 상관을 보였다.