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레스토랑 고객 특성에 따른 선호 색상과 레스토랑 이미지 평가에 관한 연구
황규원(Kyu-Won Hwang) 한국식공간학회 2008 식공간연구 Vol.3 No.1
With the evolution of social structure came a change in dinning patterns from dinning-in to dinning-out. Amid intensive competition, restaurants are focusing on arousing the senses of the customers to obtain competitiveness. Now the customers, when dinning-out, not only assess the taste of the food but also buy the image of the restaurant as well. Therefore, within the vast variety of choices that the customers can make, the prime questions that have emerged for the restaurant managers are ; How are the restaurants going to attract the customers ; How are they going to lure the customers into the restaurant ; and How will the restaurants satisfy customers' needs and wants and furthermore connect with the customers' senses. However, with conventional management techniques the dinning industry came short of meeting the needs and expectations of the customers. The color is an important factor that not only dictates the outlet's image but also decides its style. Therefore, this study will differentiate the common coloring preferences of customers and present a relevant color marketing method to encourage the proper use of colors in the new dinning culture.
상추 재배토양 중 살균제 Procymidone의 작물전이량
황규원(Kyu-Won Hwang),황은정(Eun Jeong Hwang),김민기(Min Ki Kim),문준관(Joon-Kwan Moon) 한국농약과학회 2017 농약과학회지 Vol.21 No.3
This study was conducted to investigate the residual loss of procymidone in soil and the amount of transfer to lettuce which is one of the pesticides with high detection frequency in the safety survey. The field trial on lettuce was carried out in two different green houses located at Gwangju (Field 1) and Yongin (Field 2). Soil and lettuce samples were collected at different days after soil treatment of procymidone as two different concentrations, respectively. Recoveries from soil and lettuce were 87.7-118.1% and standard deviations were ranged from 0.3 to 2.74%. The initial residue amounts on soil were 4.89 and 8.53 mg/kg and decreased to 1.87 and 2.76 mg/kg at 43 DAT (day after treatment) in field 1 and 1.46 and 2.39 mg/kg and decreased to 0.45 and 0.67 mg/kg at 36 DAT in field 2, respectively. The half-life of procymidone was about 38.5 days in field 1 for both treated concentration, and 20.4 and 23.4 days for the low and high concentration of procymidone treated soils in field 2, respectively. Residue levels of procymidone in lettuce were 11.94-35.20 and 8.81-70.40% of initial concentration in filed 1 and field 2 soil, respectively.
상추 재배토양 중 잔류 Tricyclazole의 작물전이량
황규원(Kyu-Won Hwang),황은정(Eung Jeong Hwang),김민기(Min Ki Kim),유수철(Soo Cheul Yoo),문준관(Joon-Kwan Moon) 한국농약과학회 2017 농약과학회지 Vol.21 No.3
This study was conducted to investigate the residual level of tricyclazole and the amount of transfer to lettuce grown in field condition treated with the tricyclazole. This pesticide is one of the components that were not used in the cultivation of agricultural products but were detected in a large number of agricultural soil. The field trial on lettuce was carried out in two different green houses located at Gwangju (Field 1) and Yongin (Field 2). Soil and lettuce samples were collected at different days after soil treatment of tricyclazole with two different concentrations, respectively. Average recoveries for tricyclazole ranged from 82.1 to 95.8% on soil and in lettuce and the variation coefficient was 1.7~6.8%. The initial concentrations of tricyclazole in Gwangju soil were 3.72 and 7.36 mg/kg and decreased to 1.05 and 2.19 mg/kg at 43 DAT (day after treatment) in field 1 and 0.86 and 1.79 mg/kg and decreased to 0.53 and 1.25 mg/kg at 36 DAT in field 2, respectively. The half-life of tricyclazole was about 25.7 and 24.8 days for the low and high concentration of tricyclazole treated soils in field 1 and 49.5 and 69.3 days for the low and high concentration of tricyclazole treated soils in field 2, respectively. Residue levels of tricyclazole in lettuce were 6.27-31.60 and 14.26-38.50% of initial concentration in filed 1 and field 2 soil, respectively.
황규원 ( Kyu-won Hwang ),황은정 ( Eun-jung Hwang ),김민기 ( Min-gi Kim ),전채호 ( Chae-ho Jeon ),문준관 ( Joon-kwan Moon ) 한국환경농학회 2017 한국환경농학회 학술대회집 Vol.2017 No.-
본 연구는 작물 중 감귤에 대하여 5종 농약(Acequinocyl 및 Acequinocyl-OH, Chorpyrifos, Cyflumetofen, Etoxazole, Spirodiclofen) 피망에 대하여 4종 농약(Amisulbrom, Boscalid, Fludioxonil, Spinetoram)의 분석방법을 확립하고자 하였다. 감귤 및 피망시료 중의 약제들은 “추출→분배추출 →정제 (solid phase chromatography or column chromatography)”의 과정을 거친 후 acetonitrile로 정용, HPLC로 분석하였다. 단, Chlorpyrifos의 경우는 acetone으로 정용, GC-ECD를 이용하여 분석하였다. 정량한계는 모두 0.02 mg/kg이었으며, 정량한계의 10배, 50배가 되도록 처리한 후, 회수율시 험을 실시하였다. 5종 농약에 대한 감귤 중 회수율시험 결과, Acequinocyl 및 Acequinocyl-OH은 각 각 102.1~107.9%, 100.2~108.9%이었고, Chorpyrifos은 108.8~117.0%, Cyflumetofen은 90.2~109.0%, Etoxazole은 76.1~96.2%, Spirodiclofen은 84.0~98.3% 이었다. 그리고 4종 농약에 대한 피망 중 회 수율 결과, Amisulbrom은 86.5~94.3%, Boscalid는 97.5~108.9%, Fludioxonil 88.5~101.7%, Spinetoram 82.0~100.9% 이었다. 변이계수는 9종 농약에서 모두 10% 미만으로 두 작물에서 모두 양 호한 결과를 나타내었다.
호박 중 살충제 Buprofezin 및 Pyridaben의 생산단계 농약 잔류허용기준 설정 연구
황규원 ( Kyu-won Hwang ),김현진 ( Hyen Jin Kim ),선정훈 ( Jeong Hoon Sun ),정경수 ( Kyung Su Jung ),이태현 ( Tae Hyun Lee ),문준관 ( Joon-kwan Moon ) 한국환경농학회 2019 한국환경농학회 학술대회집 Vol.2019 No.-
본 연구는 애호박 중 살충제 buprofezin 및 pyridaben의 수확 전 최종 농약 살포일로부터 수확 일까지 농약의 잔류량 감소 추이를 파악하여 약제별 잔류특성을 파악하고, 반감기를 산출함으로써 생산단계 잔류허용기준(PHRL, Pre-Harvest Residue Limit) 설정을 위한 기초자료로서 활용하고자 수행하였다. 위도상 직선거리가 20 km 이상인 시험포장 2곳(포장1; 충남 부여, 포장 2 : 경기도 평택)을 선정하여 농약안전사용기준에 따라 농약을 살포하고 살포 2시간 후를 0일차로 하여 0, 1, 2, 3, 5, 7, 10일차에 수확하여 잔류량의 경시변화를 토대로 생물학적 반감기를 산출하였다. 두 시험 농약은 추출, 액-액 분배, 정제과정을 거친 후 HPLC-UVD로 분석하였다. 정량한계는 모두 0.01mg/kg이었으며, 정량한계 및 정량한계의 10배 수준으로 농약을 처리하여 회수율시험을 수행하였다. 회수율은 buprofezin의 경우 91.1~111.6%이었고, pyridaben은 81.3~114.1%이었으며 변이계수는 15% 미만으로 양호하였다. 애호박 중 농약의 잔류소실양상은 단순 1차감쇄반응식에 따라 반감기를 산출하였으며, 시험포장 1과 시험포장 2에서 buprofezin의 반감기는 각각 4.7일, 4.1일로 나타났고, pyridaben의 반감기는 각각 3.9일, 2.7일로 나타났다. 시험농약의 최종 약제 살포 후 0일차 시료 잔류량은 두 약제 모두 잔류허용기준 (0.5 mg/kg) 미만이었으며, 수확일의 잔류수준을 최대잔류허용량으로 가정하여 잔류회귀감소식을 이용, 수확 10일 전까지의 각 약제별 생산단계 잔류 허용기준(안)을 제안하였다. 이를 통해 수확 전 수확 예정일의 잔류량을 예측하여 잔류허용기준의 초과여부를 판정함으로써 농약잔류허용기준을 초과하는 부적합 농산물의 유통을 사전에 차단하여 소비자에게 안전한 먹거리를 제공하는데 기여할 수 있을 것으로 생각된다.
충남 대기환경 영향요인에 관한 연구 - 천안, 당진, 서산 등을 중심으로
황규원(Kyu-Won Hwang),김진영(Jinyoung Kim),권영주(Young-Ju Kwon) 한국산학기술학회 2021 한국산학기술학회논문지 Vol.22 No.5
최근 대기환경에 대한 국민의 관심이 증대하고 있으며, 미세먼지 등으로 인하여 국민 건강이 위협 받고 있다. 또한 정부는 대기오염물질에 대한 모니터링을 확대하고, 환경기준을 강화하는 등 대기질 개선을 위한 노력을 지속하고 있다. 한반도 지역에 따라 대기질이 상이하기 때문에 원인 파악과 영향요인 탐색이 필요한 실정이다. 본 연구에서는 충남권에 위치한 도시의 대기환경과 지역적 차이를 탐색하였다. 연구방법으로 충남 3개 도시의 대기질 현황을 확인하고, 기온, 풍속, 강수, 계절 등의 기상조건과 SO₂, NO₂, CO, PM10, PM2.5, O₃ 등의 대기오염물질과 입자상 물질에 포함된 Pb, Cd, Cr, Cu, Ni, As, Mn, Fe, Al, Ca, Mg 등의 중금속 성분을 대상으로 회귀분석을 수행하였다. 분석결과 PM10 농도의 경우, 천안은 Mn(0.4884), 당진은 CO(0.3329), 서산은 Mg(0.5691) 농도에 의한 기여도가 높았다. PM2.5의 경우, 천안 NO₂(0.4759), 당진 CO(0.4128), 서산 NO₂(0.3715)에 의한 영향이 크게 나타났다. 종합하면 대기질 측면에서 충남 지역별 영향요인이 상이하고, 기여도에 분명한 차이가 존재함으로 이를 고려한 정부의 지역별 대기질 관리가 요구된다고 판단된다. Recently, the public’s interest in the air environment has increased, and public health is threatened by fine particulate matter. Furthermore, the government continues efforts to improve air quality by expanding the monitoring of air pollutants and reinforcing environmental standards. Since air quality differs depending on the region in the Korean Peninsula, it is currently necessary to identify the cause and search for influencing factors. In this study, the atmospheric environment and regional differences in cities located in the Chungnam Province were observed. As a research method, regression analysis was performed for weather conditions, such as temperature, wind speed, precipitation, and season and targeted at air pollutants, such as SO₂, NO₂, CO, O₃, PM10, and PM2.5, as well as heavy metals contained in particulate matter, such as Pb, Cd, Cr, Cu, Ni, As, Mn, Fe, Al, Ca, and Mg. In the case of PM10, the concentrations of Mn(0.4884) in Cheonan, CO(0.3329) in Dangjin, and Mg(0.5691) in Seosan were highest. In the case of PM2.5, Cheonan NO₂(0.4759), Dangjin CO(0.4128), and Seosan NO₂(0.3715) were significantly affected. In summary, the influencing factors vary according to the region in Chungnam province in terms of air quality, and there is a difference in the degree of contribution. Therefore, it is considered that the Korean government’s management of air quality is required for each region.
생산단계 잔류허용 기준 설정을 위한 시설 재배 오이 중 살균제 Amisulbrom의 잔류특성 연구
황규원(Kyu-Won Hwang),김태완(Tae Wan Kim),유재홍(Jae-Hong Yoo),박병수(Byeoung-Soo Park),문준관(Joon-Kwan Moon) 한국농약과학회 2012 농약과학회지 Vol.16 No.4
The dissipation patterns of amisulbrom in cucumber under a greenhouse condition was investigated to establish biological half-life and pre-harvest residue limit (PHRL). Amisulbrom residue in/on cucumber on the day of application under standard application condition was 0.15 mg kg<sup>?1</sup> and decreased to 0.06mg kg<sup>?1</sup> after 5 days after treatment, so that biological half-life calculated 3.6 day, while initial concentration of amisulbrom twice application 3 days interval under standard application condition was 0.35 mg kg<sup>?1</sup> and decreased to 0.09 mg kg<sup>?1</sup> after same period and the biological half-life calculated 2.4 day. PHRL was suggested by prediction curve calculated from the decay constant of amisulbrom at standard rate. For example, 1.83 mg kg<sup>?1</sup> at 5 days before harvest and 1.03 mg kg<sup>?1</sup> at 2 days before harvest were suggested.