• 한국환경농학회지
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• 제39권4호
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• pp.343-351
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• 2020

BACKGROUND: Irrigation water is known to be one of the major sources of bacterial contamination in agricultural products. In addition, anti-microbial resistance (AMR) bacteria in food products possess serious threat to humans. This study was aimed at investigating the prevalence of foodborne bacteria in irrigation water and evaluating their anti-microbial susceptibility. METHODS AND RESULTS: Surface water (n = 66 sites) and groundwater (n = 40 sites) samples were collected from the Gyeongi and Gangwon provinces of South Korea during April, July, and October 2019. To evaluate the safety of water, fecal indicators (Escherichia coli) and foodborne pathogens (E. coli O157:H7, Salmonella spp., and Listeria monocytogenes) were examined. E. coli isolates from water were further tested for antimicrobial susceptibility using VITEK2 system. Overall, detection rate of foodborne pathogens in July was highest among three months. The prevalence of pathogenic E. coli (24%), Salmonella (3%), and L. monocytogenes (3%) was higher in surface water, while only one ground water site was contained with pathogenic E. coli (2.5%). Of the 343 E. coli isolates, 22.7% isolates were resistant to one or more antimicrobials (ampicillin (18.7%), trimethoprim-sulfamethoxazole (7.0%), and ciprofloxacin (6.7%)). CONCLUSION: To enhance the safety of agricultural products, it is necessary to frequently monitor the microbial quality of water.

• 한국식품위생안전성학회지
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• 제31권4호
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• pp.264-271
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• 2016

본 연구는 어린잎 채소와 생산환경에서 미생물학적 오염도를 조사하고자 수행하였다. 이를 위하여 11종의 어린잎채소와 종자, 관개용수, 상토, 작업도구 및 작업자 장갑 등 총 126개의 시료를 채취하여 위생지표세균(대장균군, E. coli)과 병원성미생물(Escherichia coli O157:H7, Salmonella spp., Staphylococcus aureus, Listeria monocytogenes, Bacillus cereus)을 조사하였다. 그 결과, 종자와 관개용수를 제외한 대부분의 시료에서 대장균군이 검출되었다. E. coli는 분석시료 중 10.3% (13/126)에서 검출되었으며 검출된 시료로는 관개용수, 칼, 작업자 장갑, 및 다채, 적무, 청경채였다. 또한 B. cereus는 상토, 작업도구 및 청경채, 비트, 적근대 등 총 38% (48/126)의 시료에서 검출되었다. 한편 E. coli O157:H7, Salmonella spp., L. monocytogenes는 검출되지 않았다. 본연구의 결과로 미루어 볼 때 어린잎채소는 미생물 안전성면에서는 크게 우려할 수준은 아니지만 어린잎채소의 미생물오염을 사전 예방하는 차원에서 농업현장에서 쉽게 실천할 수 있는 위생관리 기술 개발과 보급이 필요하다고 판단된다.

• Journal of Radiation Protection and Research
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• 제23권3호
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• pp.197-210
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• 1998

IAEA는 1996년 방사성물질 안전 운송규정을 개정하였다. 이 규정은 방사성물질의 우송이나 포장에 관하여 우리나라를 비롯한 각국의 운송관련 규정의 기준이 되는 것으로 전반부에서는 IAEA가 1991년에 출간된 국제방사선방호위원회 (ICRP)의 신권고(Publication 60)를 받아들여 개정한 Safety Series No.115(전리방사선에 대한 방호 또는 방사선원의 안전을 위한 기본 안전기준)의 내용 등을 개정의 배경으로 하여 요약하였다. 후반부에서는 이들 개정된 기본 안전 기준들에 기초하여 IAEA의 새로운 운송규정에서 방사선방호의 목적으로 고찰된 요건들에 관한 주요 검토 개정사항을 방사선방어체계, 운송물등의 방사선준위, 방사선방호계획의 규정화, Q 시스템의 개념, 규제면제 등의 측면에서 Safety Series No.6 1985년판과 비교 검토하였다.

• 한국환경농학회지
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• 제33권4호
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• pp.414-418
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• 2014

BACKGROUND: Benzene, toluene, ethylbenzene and xylene (BTEX), which are volatile aromatic hydrocarbons and main constituents of gasoline, are neuro-carcinogenic organic pollutants in soil and groundwater. Korea Ministry of Environment has established the maximum permissible level of BTEX in arable soil to 1, 20, 50 and 15 mg/kg, respectively. METHODS AND RESULTS: To understand an arable soil contamination by BTEX, we collected 92 samples from the arable lands around oil reservoir, and analyzed the BTEX residue using a GC-MS with head-space sampler. A linear correlation between BTEX concentration and peak areas was detected with coefficient correlations in the range of 0.9807-0.9995. The method LOQ of BTEX was 0.002, 0.014, 0.084, and 0.038 mg/kg, respectively. Recoveries of 0.5 mg/kg BTEX were found to be 73.7-96.9%. The precision was reliable since RSD percentage (0.7-7.5%) was below 30, which was the normal percent value. Also, BTEX in all samples were detected under the LOQ. CONCLUSION: These results showed that the investigated arable soils around airport and oil reservoir in Korea were not contaminated by oils.

• Journal of Radiation Protection and Research
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• 제41권4호
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• pp.424-435
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• 2016

Background: The International Commission on Radiological Protection (ICRP) recommendations and the Federal Guidance Report (FGR) published by the U.S. Environmental Protection Agency (EPA) have been widely applied worldwide in the fields of radiation protection and dose assessment. The dose conversion coefficients of the ICRP and FGR are widely used for assessing exposure doses. However, before the coefficients are used, the user must thoroughly understand the derivation process of the coefficients to ensure that they are used appropriately in the evaluation. Materials and Methods: The ICRP provides recommendations to regulatory and advisory agencies, mainly in the form of guidance on the fundamental principles on which appropriate radiological protection can be based. The FGR provides federal and state agencies with technical information to assist their implementation of radiation protection programs for the U.S. population. The system of radiation dose assessment and dose conversion coefficients in the ICRP and FGR is reviewed in this study. Results and Discussion: A thorough understanding of their background is essential for the proper use of dose conversion coefficients. The FGR dose assessment system was strongly influenced by the ICRP and the U.S. National Council on Radiation Protection and Measurements (NCRP), and is hence consistent with those recommendations. Moreover, the ICRP and FGR both used the scientific data reported by Biological Effects of Ionizing Radiation (BEIR) and United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) as their primary source of information. The difference between the ICRP and FGR lies in the fact that the ICRP utilized information regarding a population of diverse races, whereas the FGR utilized data on the American population, as its goal was to provide guidelines for radiological protection in the US. Conclusion: The contents of this study are expected to be utilized as basic research material in the areas of radiation protection and dose assessment.

• 한국환경농학회지
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• 제34권3호
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• pp.217-222
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• 2015

BACKGROUND: Garlic (Allium sativum) contains polyphenols and sulfur compounds that are recognized as antioxidant, antithrombotic, anticancer, antibacterial, antimicrobial, nematicidal, and insecticidal activity. For this reason, the Environmentally-friendly Agriculture Promotion Act allowed the garlic extract as commercial biopesticide material for crop protection, nine commercial biopesticides containing A. sativum extract have been marketed in Korea. METHODS AND RESULTS: The determination of allylmethyl sulfide (AMS), dimethyl disulfide (DMDS), and dipropyl sulfide (DPS) in biopesticides containing A. sativum extract was developed and validated by gas chromatography (GC) mass spectrometry (MS) with head-space sampler. The developed method was validated, and the limit of quantification (LOQ) and recovery rates of AMS, DMDS, and DPS were 0.08, 0.32, and 0.09 mg/L and 90.3-91.3, 86.2-88.3, and 87.6-89.5%, respectively. From the nine commercial biopesticide samples, contents of AMS, DMDS, and DPS were analyzed using the developed method and results showed

• 한국안전학회지
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• 제19권2호
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• pp.69-74
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• 2004

This study is to suggest a performance assessment model for fire safety protection of office building 34 asessment elements were chosen by interviewing with experts, reviewing several codes and existing relevant models, assessment elements included in this model are comprised of five categories which are 'performace of protected area', 'performance of fire partition', 'safety performance of fire escape', 'performace of smoke control system' and 'performace of fire fighting equipment'. The weight of each element was computed by systematic approach like an AHP (analytical hierarchy process), which was conducted by experts who work in the field of fire protection. This model would be utilized as a part of assessment model for the overall performace of domestic office building.

• 한국화재소방학회논문지
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• 제32권5호
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• pp.112-121
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• 2018

본 연구는 소방기술사(Fire Professional Engineer)의 안전의식, 안전행동과 인명안전의 관계를 검증하기 위하여 기술통계 분석, 요인 분석, 신뢰도 분석, 상관관계 분석을 실시하였으며, 연구가설을 설정하여 단순회귀 분석, 3단계 매개회귀분석을 실시하였다. 분석 결과, 소방기술사의 안전의식이 높아지면 안전행동은 72.1% 상승하고, 안전의식과 안전행동이 높아지면 인명안전은 각각 61.5%와 64.5%가 상승하는 것으로 나타났다. 또한 안전행동은 안전의식과 인명안전의 관계에서 부분매개효과가 나타났다. 모든 연구가설(H1, H2, H3, H4)의 채택으로 소방 관련법은 인명안전 중심으로 개정되어야 한다는 필요성이 통계적으로 검증되어, 향후 인명안전을 반영한 분석 자료로 널리 활용 될 것이다.

• 한국가스학회지
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• 제24권4호
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• pp.48-55
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• 2020

낙뢰 보호 시스템의 설치는 증가하고 있으나, 피해량은 여전히 줄지 않고 있다. 이 연구에서는 피뢰시스템의 안전관리 방안의 제도적 개선을 위한 목적으로 피뢰시스템에 관한 기준을 파악하고 현장조사와 설문을 통해 피뢰 시스템의 설치, 운영, 유지보수 등 실증분석을 실시했다. 국가표준 KS C IEC 62305에서 정하고 있는 기준 및 규정을 만족하지 못하는 것으로 파악되며, 이러한 문제를 해결할 수 있도록 국가적인 차원에서 피뢰시스템의 안전인증제품 관리, 안전기준의 설계·제작·시공 등 관리 기준이 이행 될 수 있도록 관련 규정 재정립을 통한 안전관리 방안을 제시한다.

• 한국재난정보학회 논문집
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• 제5권1호
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• pp.66-74
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• 2009

As building heights increase, so do these challenges in Korea. High-rise buildings present a variety of challenges to fire safety and protection. The fire protection technology in our country is still on a weak situation which is mainly due to the lack of concerns by the government, companies and citizen. This paper provides general guidance regarding fire-related property protection system for high-rise building performance based design. The importance of high-rise building in of the number of occupants, the value of property, and the a catastrophic loss would have on the community all warrant an increased level of protection and life safety. Because, We have to prepare a new spacial code and standard guidance for fire protection at the stage of the high-rise building design.