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해운대 달맞이 언덕에 있어서 바다조망경관의 역사적 변천에 관한 연구
강영조,신수안,조미나,이현주,박은희 동아대학교 건설기술연구소 2000 硏究報告 Vol.24 No.1
The purpose of this study is to clarify the historic transition of the prospects on Haeundae dalmaji hill. Dalmaji hill is well known for a character of configuration on the ground with the scene of the sea. We will infer that how did it change the prospects of Dalmaji hill's sea through the analyzing of the preset situation and location of building on the hill. (1) We investigated the stories of the building, the history, the business condition. (2) We collect the twenty four view points which is able to have seascape on the hill, being easily approaching to the road, and condition of changing the building. (3) We clarified the transition of seascape prospect and considered the characteristics of the six types from which were divided the condition of seascape prospect.
The Dopamine D4 Receptor Polymorphism Affects the Canine Fearfulness
이채영,신수안,신대성,강주현,박찬규,김장훈 한국통합생물학회 2008 Animal cells and systems Vol.12 No.2
The canine fearfulness is a behavioral trait knowneffects of the dopamine D4 receptor polymorphism on thisbehavior by postulating a mixed model of inheritance.Genotyping for the three diferent repeat polymorphismfound in the third exon of the receptor gene was carried outfor the population of the Korean native dogs. Four hundredfifty eight dogs with known pedigree were genotyped, and264 individuals were tested for their fear responses to anexperimenter, in which four diferent behavioral paradigmswere adopted. Since the results assessed by principal factoranalysis revealed a major factor explaining 69% of the totalphenotypic variance, the subsequent analyses were conductedfor this quantity. Analyses of the factor scores by estimatingtheir posterior means indicated that there is a fixed effectexerted by the three diferent repeat polymorphism found inthe D4 receptor as well as sex, in addition to unidentifiedpolygenic effects. The phenotypic contribution of the D4genotype was roughly estimated to be about 2%, which is afraction of the total genetic effects responsible for more than20% of the total phenotypic variance.
Hydroxybutyrate 함량이 Poly(3-hydroxybutyrate-co-4-hydroxybutyrate) 물성에 미치는 영향
조민기,장윤재,이은혜,신수안,강호종 한국고분자학회 2022 폴리머 Vol.46 No.5
Poly(3-hydroxybutyrate-co-4-hydroxybutyrate)(P(3HB-co-4HB)) 공중합체의 4-hydroxybutyrate(4HB) 함량이 물성에 미치는 영향을 살펴보았다. 박테리아에 의하여 만들어진 P(3HB-co-4HB)는 4HB 함량 증가에 따라 분자량이증가됨을 알 수 있었다. 하지만 유연한 4HB 사슬에 의하여 융융 점도의 감소를 초래하여 loss tangent 증가로 인한용융 가공성은 감소됨을 확인하였다. 16% 이상의 4HB 함량 증가는 공중합체의 randomness를 증가시켜 유리전이온도는 증가되며 사슬 결정화를 방해하여 비결정성 P(3HB-co-4HB)가 얻어짐을 알 수 있었다. Brittle하고 높은 강도를 갖는 결정성 P(3HB-co-4HB)는 상대적으로 유연한 4HB 사슬 함량 증가에 따라 강도는 감소하나 신율이 증가되어 고분자 가공에서 연신 특성이 개선될 것으로 판단된다.