제주 월정리 해안변 개발에 따른 해안경관 실태 분석 연구

성다정,박정근 대한건축학회지회연합회 2018 대한건축학회연합논문집 Vol.20 No.6

The coastal village in Woljeong-ri, Jeju is highly preferred by tourists because of its unique natural landscape different from inland areas. Especially, the number of buildings in the coastal area of the village is increasing due to escalating commercial value. Buildings are densely developed, along the seaside, resulting in privatization of coastal landscape. This results in blocking of landscape and psychological exchanges between the coastal village and coast. This study analyzed the actual conditions of coastal landscape before and after 2010, when the number of tourists and demand for development were increased in the coastal area of the coastal village in Woljeong-ri, Jeju. In this study, open index, visible horizontal index, elevation angle, elevation blockage and visible facade index were used to compute objective indicators of coastal landscape status. The analysis reveals visible facade index, a complex landscape assessment indicator, was increased by 7 times after 2010 as compared with before 2010. As such, there are many coastal villages in Jeju similar to Woljeong-ri that have a high landscape value and are in need of management. A comprehensive measure including a system for management of coastal landscape is urgently required to create narrative landscape in Jeju. 제주 월정 해안마을은 내륙지방과 다른 독특한 유형과 자연경관이 우수해 관광객 선호도가 높다. 특히 마을 해안변에 대한 상업적 가치 상승으로 건축물이 증가하고 있다. 건축물들은 바다로의 조망을 위해 밀도 높은 건축물들로 개발되고 있으며 이로 인해 해안경관이 사유화되고 있다. 결과적으로 기존 해안마을과 해안과의 경관적 심리적 교류가 차단되고 있다. 본 연구에서는 해안경관 현황에 대한 객관적인 지표 산출을 위해 개방지수, 가시수평지수, 앙각, 입면차폐도, 가시입면지수를 이용했다. 복합적 경관 평가지표인 가시입면지수의 결과는 개발이 증가하기 이전인 2010년 이전보다 7배나 폐쇄감이 증가했으며, 이에 대한 실질적 법적 규제가 어려운 상태이다. 제주에는 월정리와 같이 경관 가치가 높아 관리가 필요한 해안마을이 다수 분포되어 있다. 제주의 지향점인 서사적 풍경 구축을 위해 해안경관관리에 대한 제도 개선 등 종합적인 대책이 시급하다.

제주지역 미술관 전시실의 물리적 현황 분석에 관한 연구

성다정,박정근 대한건축학회지회연합회 2019 대한건축학회연합논문집 Vol.21 No.6

Art museums in Jeju are built more than four times better than the average in 17 cities and provinces across the country with 29.61 facilities per million people as of 2018. However, the satisfaction level for the art exhibition stands at 5.47, lower than the average 5.50 for 17 cities and provinces across the country, with the number of exhibitions per museum count at 2 percent, significantly lower than the figure. Jeju needs a strategy to improve citizens' satisfaction with the arts, but the Jeju art museum lacks substantial data. Thus, in this study, the characteristics of the exhibition rooms of Jeju Art museums were identified and sorted out by the person in charge of the museum's operation. As a result, public art museums had good operating conditions, floor-type composition ratios, marginal area ratios, and marginal volume ratios, except for the section type composition ratios, but private art museums had insufficient physical characteristics for the exhibition in multi-faceted analysis.

국내지역별 수집 들깨의 지방산 조성 변이

김다정,정이진,아와리스 아세파,허온숙,노나영,이재은,이주희,이석영,성정숙 한국약용작물학회 2018 한국약용작물학술대회 발표집 Vol.2018 No.05

Background : Perilla (Perilla frutescens) seed oil is known to contain high omega-3 fatty acid than other plant oils. This study was aimed to investigate the fatty acid composition in seeds of 255 perilla accessions from South Korea and recommend the potential genetic resources rel ated to their fatty acid composition. Method and Results : Total oil was extracted by soxhlet extraction apparatus and the fatty acid compositions were analyzed by gas chromatography (GCMS QP2010 ULTRA, SHIMADZU, JP). Total oil contents ranged from 22.41 and 47.62% with an average content of 34.20%. Palmitic, stearic, oleic, linoleic, and linolenic acid contributed 4.46 to 7.67%, 1.64 to 4.11%, 9.15 to 26.39%, 11.89 to 28.76%, and 50.24 to 64.16% to the total oil content, respectively. Seeds from Jeollabuk-do showed the highest average total oil content (41.14%) compared to other regions (p < 0.05), while the linolenic acid composition was the highest in the samples from Chungcheongnam-do (59.48%) (p < 0.05). The cluster analysis segregated the perilla seed accessions into two major clusters. ANOVA revealed that there was a significant difference between group Ⅰ and group Ⅱ (p < 0.05). Group Ⅰ (86 accessions) characterized as higher palmitic, stearic, oleic, and linolenic acid compositions than group Ⅱ (169 accessions). The highest content of linolenic acid were recorded in accessions K126190, K135903, and IT283646 from group Ⅰ, and accessions IT108680, IT208894, and IT111050 from group Ⅱ had high total oil content. Linoleic acid content showed a strong negative correlation with palmitic acid (r = -0.726*) and oleic acid (r = -0.678*) content. Principal component analysis (PCA) revealed that the first two principal components together explained 68.75% total variation. Conclusion : Our results showed that accessions K126190, K135903, IT283646 which exhibited high linolenic acid composition and accessions IT108680, IT208894, IT111050 which exhibited high total oil composition, could be useful to develop new functional oil materials.

터보 과급기 제어를 위한 스윙게이트 밸브 설계

김다정(Da Jeong Kim),곽효서(Hyo Seo Kwak),성한샘(Han Saem Sung),김재열(Jae Yeol Kim),엄태진(Tae Jin Eom),김철(Chul Kim) 대한기계학회 2018 大韓機械學會論文集A Vol.42 No.9

스윙게이트 밸브는 디젤엔진 선박의 터보 과급기로 유입되는 배기가스를 제어하는 역할을 수행한다. 기존의 밸브는 디스크와 몸체 사이의 간극이 없어 불완전 연소 시 생성되는 불순물로 인해 디스크가 고착되어 원활한 개폐가 어렵고 디스크에 처짐이 발생하여 밸브 개폐 시 몸체에 스크래치가 발생한다. 이에 본 연구에서는 디스크의 고착 방지를 위하여, 밸브가 닫혀 있을 때 현장에서 요구하는 누설 허용량 5% 이내를 만족하는 간극 범위를 결정하였다. 밸브의 전체 두께는 설치공간의 제약으로 인해 고정되어 있으므로 결정된 간극에 따라 플랜지와 몸체의 두께를 설계하였고, 이를 통해 밸브의 경량화를 이루었다. 또한, 디스크의 형상 및 두께 설계를 통해 디스크 처짐으로 인한 스크래치를 저감시켰으며, 상기의 과정을 거쳐 설계된 스윙게이트 밸브에 대하여 진동하중에 따른 구조안전성을 검증하였다. The swing gate valve controls the exhaust gas flowing into the turbocharger installed on the diesel engines of ships. The conventional swing gate valve has no clearance between the disc and the body parts to which the impurities generated during incomplete combustion can adhere. As a result, opening and closing the valve can be difficult. In addition, deflection of the disc causes scratching when the valve is opened or closed. In this study, a clearance within the allowance leakage (5%) has been determined to prevent the valve from sticking to the body parts as the valve closes. The thickness of the body and flange parts were designed according to this calculated clearance, and the design of the disc leads to a reduction in scratch formation. Finally, the structural safety of the proposed model was evaluated under vibration loads.

동아시아 잇꽃 유전자원의 지방조성 및 항산화 분석

성정숙,정이진,김다정,아와리스 아세파,전영아,허온숙,노나영,고호철,육현충,이주희,이명철,백형진 한국약용작물학회 2018 한국약용작물학회지 Vol.26 No.1

Background: To obtain useful safflower resources for breeding and research of functional materials, the present study was conducted to determine fatty acid compositions and antioxidant activities of 281 safflower accessions collected from East Asia including South Korea. Methods and Results: Lipid contents and fatty acids compositions were evaluated using soxhlet extraction and gas chromatography, respectively. A antioxidant activities were analyzed using a spectrophotometer. The evaluation range of safflower accessions showed very wide variation. In terms of lipid contents, the China accessions were higher than the collection from other regions, whereas antioxidant activities did not differ among regions. The result of the principal component analysis showed that the first and second principal component cumulatively explained 90.6% of the total variation. In clustering the safflower accessions, the tree showed four major clades. Group II (16 accessions) was high in lipid content, oleic acid and linoleic acid, whereas group III (50 accessions) exhibited higher antioxidant activities than other groups. Conclusions: It was recommended that the China collections be utilized as a useful resource for research on functional oil materials. These results provided valuable information for safflower breeders and researchers of functional food.

러시아수집 들깨잎의 항산화 활성 변이

김다정,정이진,아와리스 아세파,허온숙,노나영,이재은,이주희,이석영,성정숙 한국약용작물학회 2018 한국약용작물학술대회 발표집 Vol.2018 No.05

Background : Perilla leaves (Perilla frutescens) are known to possess antioxidant activity and have long been used to treat a variety of health related issues. The present study was conduct ed to compare the antioxidant activity among perilla accessions collected from Russia. Method and Results : The leaves of a total of 46 accessions of perilla were collected from Russia. Crude extracts were obtained from 2 g of oven-dried perilla leaves using ASE-350 extractor. Total phenolic content (TPC) was determined by Folin-Ciocalteu method and antioxidant activities were estimated by 2,2-diphenyl-1-picryl-hydrazil (DPPH), 2,2'-azino-bis-3-ethylbenzothiazoline-6-sulphonic acid (A BTS) radical scavenging activities, ferric reducing antioxidant power (FRAP) and reducing power (RP). TPC was ranged from 88.70 to 148.85 ㎍ gallic acid equivalent (GAE) /㎎ dried extract (DE). DPPH, ABTS, FRAP, and RP were ranged from 59.49 to 94.80 ㎍ ascorbic acid equivalent (ASCE) /㎎ DE, 73.01 to 190.59 ㎍ ASCE /㎎ DE, 98.73 to 326.39 ㎍ ASCE /㎎ DE, 82.58 to 264.88 ㎍ ASCE /㎎ DE, respectively. Cluster analysis based on antioxidant assay results of 46 perilla accessions divided into three major groups. Group Ⅰ (9 accessions) characterized as higher antioxidant activity accessions than other group (p < 0.001). The correlations between antioxidant assays were strong and positive (r ≧ 0.78). Principal component analysis (PCA) revealed that the first two principal components together explained 92.96 % total variation. Conclusion : Among the perilla accessions collected from Russia, group accessions clustered in group Ⅱ showed high antioxidant activity. Our results indicated that accessions IT274300, IT226732 and IT274293 could be used as a source of valuable natural antioxidant materials.

Allium속 식물의 항산화 활성 비교

성정숙(Jungsook Sung),김다정(Dajeong Kim),정이진(Yijin Jeong),허온숙(Onsook Hur),고호철(Hocheol Ko),이정로(Jungro Lee),이주희(Juhee Rhee),백형진(Hyungjin Baek),류경열(Kyoungyul Ryu) 한국원예학회 2016 한국원예학회 학술발표요지 Vol.2016 No.10

들깨 유전자원의 지방산 변이 및 rosmarinic acid와 caffeic acid의 함량에 따른 항산화 활성 비교

김다정,Awraris Derbie Assefa,정이진,전영아,이재은,이명철,이호선,이주희,성정숙 한국약용작물학회 2019 한국약용작물학회지 Vol.27 No.2

Background: The aim of this study was to compare the fatty acid composition, antioxidant activity, and the content of two major phenolic acids, caffeic and rosmarinic acids, of 45 Perilla accessions collected from Russia. Methods and Results: A total of 45 accessions of the genus Perilla were used in this study. The antioxidant activities of these accessions were analyzed using a spectrophotometer, and their caffeic and rosmarinic acid contents were determined using a reversedphase ultraperformance liquid chromatography (UPLC) system. The Perilla seed oil was recovered using hexane in a soxhlet extraction method. The fatty acid compositions were analyzed using a Shimadzu QP2010 gas chromatography-mass spectoroscopy system. The results showed that accessions IT226732 and IT274300 had the highest content of caffeic and rosmarinic acid, respectively. A cluster analysis based on antioxidant assay results and concentration of phenolic acids led to the categorization of Perilla accessions into three major groups. The accessions in Group I were characterized by higher caffeic and rosmarinic acid content and antioxidant activity, compared to the accessions in the other two groups (p < 0.05). The total oil content ranged between 28.39 and 46.89%. The compositions of oleic, linoleic, and linolenic acid ranged from 11.83 to 19.55%, 11.92 to 16.71%, and 59.19 to 67.28%, respectively. Conclusions: The results of this study indicated that accessions IT274300, IT226732, IT274293, IT235818, and IT235820 could be used as a source of functional materials.

러시아 수집 들깨 종자의 지방산 조성 변이

김다정,정이진,Awraris Derbie Assefa,허온숙,노나영,이재은,이호선,이명철,이주희,이석영,성정숙 한국약용작물학회 2018 한국약용작물학술대회 발표집 Vol.2018 No.10

Background : Alpha-linolenic acid is a type of omega-3 fatty acid and has been reported to be found at a remarkably high content in seeds of perilla (Perilla frutescens). The purpose of this study was to investigate the fatty acid compositions in 45 perilla accessions collected from Russia and recommend the potential genetic resources related to their fatty acid compositions. Methods and Results : The 45 accessions of perilla seeds which were collected from Russia were used for the study. Perilla seed oil was recovered using hexane in a soxhlet extraction method. The fatty acid compositions were analyzed using gas chromatography. The total oil content was ranged between 28.39 and 46.89%. The compositions of palmitic, stearic, oleic, linoleic and linolenic acid ranged from 5.57 to 7.09%, 1.16 to 2.27%, 11.83 to 19.55%, 11.92 to 16.71%, and 59.19 to 67.28%, respectively. Cultivars 'Dayu', 'Daeyu' and 'Anyu' showed lower linolenic acid composition compared to the average value of linoleic acid in perilla germplasms collected from Russia. Cluster analysis based on the fatty acid composition of the 45 perilla accessions segregated into three groups. Group Ⅰ characterized as higher palmitic, stearic and oleic acid compositions compared to other groups. Group Ⅱ which contained 12 accessions had high total oil and linoleic acid composition. Group Ⅲ characterized as a higher linolenic acid composition compared to other groups (p < 0.001). Oleic acid showed a significant negative correlation (r = -0.825) with linolenic acid. Principal component analysis (PCA) revealed that the first two principal components together explained 74.4% total variation. Conclusion : Our results indicated that accessions IT235818, IT235820, IT226739 which exhibited high linolenic acid composition could be useful to develop new functional vegetable oil materials.

인도 수집 홍화자원의 작물학적 특성 및 지방 조성

성정숙,정이진,김다정,Awraris Derbie Assefa,허온숙,노나영,이재은,이호선,이명철,이주희 한국약용작물학회 2018 한국약용작물학술대회 발표집 Vol.2018 No.10

Background : The purpose of this study is to select potential genetic resources from safflower germplasm collected from India based on their oil compositions and agronomic characteristics. Methods and Results : The agronomic characteristics were measured during the growing period of the safflower. Total oil contents were recovered by Soxhlet extraction and the fatty acid compositions were analyzed by using gas chromatography. The mean of plant height, leaf length and leaf width were 100.19 ㎝, 20.49 ㎝, and 7.29 ㎝, respectively. The percentage of leaf margin with serration was 95%, and 2% of the total resources didn’t have spines on the involucral bract. K185681 had no spines on the involucral bract and the plant height was the smallest. 73% of the flower of safflower was yellow. 68% of safflower germplasm changed flower color from yellow to red. Total oil contents of 267 safflower accessions showed a significant variability among the entire domain of collections and ranged from 5.81 to 38.91%. Palmitic and stearic acid were ranged from 4.98 to 6.65%, and 1.82 to 2.73%, respectively. Oleic and linoleic acid showed a wide variation which ranged from 10.53 to 22.27%, and 69.46 to 81.26%, respectively. Linolenic acid was ranged from 0.06 to 0.13%. K185639 and K185639 had the highest total oil contents and linoleic acid, respectively. Cluster analysis based on oil composition and agronomic characteristics data divided the germplasm collections into three groups. Group Ⅲ having 114 accessions contained accessions with taller plant height than the other groups. Group Ⅱ having 68 accessions, the main color of flower was white but the other groups were yellow. Oleic acid showed a strong negative correlation (r = -0.9691**) with linoleic acid. Principal component analysis (PCA) based on the oil compositions and agronomic characteristics data revealed that the first two principal components (PC1 and PC2) together explained 36.28% total variation. Conclusion : These results showed that K185681, K185639 and K185639 could be useful to develop breeding and functional food.