들깨잎 폴리페놀 산화효소의 pH 및 온도에 의한 영향

김유경,김안근,Kim, Yoo-Kyung,Kim, An-Keun 대한약학회 2004 약학회지 Vol.48 No.6

Polyphenol oxidase-catalyzed oxidation of substrates (t-butylcatechol, 4-methylcatechol, chlorogenic acid, caffeic acid and pyrocatechol) were performed in the Ph range 4~8. Co ncentrations of substrate's major oxidation products were monitored by high performance liquid chromatograph. The nature and amounts of products formed were highly pH dependent. They also were ifluenced by kinds of substrates. Major oxidation product of 4-methylcatechol appeared the maxium value at pH 5, them of chlorogenic acid, caffeic acid and pyrocatechol at pH 6.0 and that of t-butylcatechol at pH 5~7. Time-dependent PPO activity was determined at $4^{\circ}C\;and\;30^{\circ}C$. PPO extracted by phosphate buffer containing triton X-114 (t-PPO) was more stable than PPO by phosphate buffer (b-PPO). The result of electrophoresis, at first PPO was showed only a band at 48 kd. After 1~3 days a partial degrade band was appeared in b-PPO and three partial degrade bands in t-PPO. No activity band was appeared in PPOs at $30^{\circ}C$ and b-PPO at $4^{\circ}C$ after 4 days. And a band (37 kDa) in t-PPO was remained finally and disappered. PPO from Perillae leaves has two activity bands at 48 and 37 kDa in previous paper. It was supposed that PPO in the leaves of Perilla frutescens was a protein having one molecular weight as 48 kDa. And 37 kDa protein, relatively proteolysis-resistant, was a proteolyzed form of a major form.

식품 섭취와 인지기능장애와의 관계: 체계적 문헌고찰 및 메타분석

김유경,김경희,Kim, Yoo-Gyeong,Kim, Kyung-Hee 한국식생활문화학회 2020 韓國食生活文化學會誌 Vol.35 No.6

This systematic review and meta-analysis aimed to determine whether food intake is effective in preventing diseases related to cognitive impairment. We searched English databases namely MEDLINE, PubMed and ScienceDirect from 2000 to May 2020, and Korean databases namely RISS, KISS, and DBPIA from 1990 to May 2020. We divided the data into 15 groups using the food group classification of the Korean Nutrition Society (KNS). The effect size (Cohen's d) was estimated using a random-effect model, and a 95% confidence interval was calculated for each study. We included 17 cross-sectional studies and 7 cohort studies which involved 45,115 participants. As a result of analyzing the subgroups in the Asian population of both sexes, it was observed that grain intake has a protective effect against cognitive impairment. For females, pulses and fish also have a protective role against cognitive impairment. In the case of seaweed, a negative relationship was found with a moderate protective effect against cognitive impairment (Cohen's d:-0.533, 95% CI: -0.939, -0.126; p=0.010) in Korean studies. Dairy products are associated with an increased risk of cognitive impairment in the American and European population but drinking alcohol is associated with a lower impairment risk. These results provide a basis for formulating the dietary guidelines for preventing dementia for each country.

브랜드 개성의 커뮤니케이션 일관성과 브랜드 태도와의 구조적 관계

김유경(Yoo Kyung Kim),최일도(Il Do Choi),강윤희(Yoon Hee Kang) 한국광고홍보학회 2007 한국광고홍보학보 Vol.9 No.1

국가 정체성의 보편적 인식 차원과 영향에 관한 연구

김유경 ( You Kyung Kim ),김유신 ( Yoo Shin Kim ),박성현 ( Sung Hyun Park ),이효복 ( Hyo Bok Lee ) 한국PR학회 2012 PR연구 Vol.16 No.2

In order to raise the value of national brand, defining national identity that is based on competitiveness and bond of sympathy, which creates national image, must be done beforehand. Thus, the research focuses on investigating Korean university students on national identity that can be universally applied. A dimension of national identity, which includes nation`s history and value, and cultural uniqueness, global citizenship, national heritage, value system, global leadership, and emotional attachment based on goals to be aimed, was able to be drawn by the research. In addition, such dimensions were applied to United States of America, France, Japan, China, Iran, and many other rival nations to verify validity and examined effect of national identity on nation`s growth. A result from the research provided basic foundation of the study on national identity that is commonly applicable to each nation. In other words, a methodology from this research will be a valuable guideline to any follow-up investigations that is to be done on relevant nations. Furthermore, a definition of managing national identity based on this study is to inform with consistency about nation`s core capability and thoughts. The two useful conclusions drawn from this research are following. One is to infuse publics with a feeling of expectancy to stimulate intention to purchase; another is that it induces inner members to unite together for development of a nation under one common goal regardless of individual`s interest. Hence, a result from this research shows dimensions of each nation compared to other countries and implications in promotion & focused administration that corresponds to a goal, nation`s growth.

eBrand 이미지 차원의 특성과 경험요인의 영향에 관한 연구

김유경(Yoo-Kyung Kim),이재호(Jae-Ho Lee) 한국방송학회 2003 한국방송학보 Vol.17 No.2

본 연구에서는 대안시장으로서의 온라인상에서 브랜드 구축을 위해 필수적인 브랜드 이미지를 보다 본질적인 차원에서 관찰하고 오프라인의 확장적 개념으로서 차별적 특성에 대해 논의하였다. 이를 위해 온라인에서의 브랜드, 즉 eBrand의 이미지 차원을 구조화하여 브랜드 구축의 기본체계로 설정 하였다. 또한 온라인 환경에서 브랜드에 대한 전반적 인상을 결정하는 주요한 요인으로 소비자 경험의 역할을 고려하여 이러한 경험적 요인이 eBrand 의 이미지 형성과 어떠한 상호관련성올 가지는가에 대해 규명하고자 하였다. 본 연구는 eBrand의 관점별 이미지를 중심으로 각 하위 이미지에 대한 연상을 유발할 수 있는 단서들을 웹사이트의 구성요소에서 추출하여 이를 유형화하고자 하였다. 본 연구에서는 eBrand의 이미지 형성에 미치는 브랜드 경험요인의 영향관계를 규명하고 아울러 웹사이트 유형을 통제변인으로 보았다. 이는 eBrand 유형에 따른 이미지 차원의 변화를 살펴보고자 함이었다. 본 연구는 경기ㆍ서울 일원의 대학생 283명을 편의적으로 표집하여 12개의 브랜드를 연구목적에 맞게 선정, 통제변인별로 나누어 설문조사를 하였다. 온라인상에서의 브랜드 이미지 목록을 사전조사를 통해 수정ㆍ보완한 후 16개의 이미지 목록으로 확정하여 요인화 과정에 활용하였다. 경험요인 또한 온라인상에서 브랜드 이미지를 형성하는데 영향을 미치는 주요 요인으로 상정하여 웹사이트의 유형별로 다양하게 나타나는 이미지 차원을 도출하였다. 이밖에 본 연구는 이들이 주는 의마와 시사점에 대해 논하였다. This study was intended to not only examine dimensional perspectives of image of click & click brands, so-called, eBrands. but effects of customer experiences as involving variables. First of all, this study tried to focus on how people perceive the types of brand image on the internet. Especially, these dimensions were compared with those of brand images evolved in off-line environment. Types of brand associations and their properties were thoroughly reviewed with the emphasis of main consequences of existing literatures, culminating in revealing the independent predictable dimensions. Assuming that internet is the best environment influencing upon evoking the typology of ebrand image, this study adopted the concept of experience as crucial influencing factor to determine the degree of relevances and associations of sub-concepts under experience. In so doing, this study conducted survey with self-administered questionnaire on 283 college students living around Seoul and its adjacent area. Types of 12 ebrands or websites were classified into four different category such as type of information contents, entertainment contents, community, transaction and so on, under which were individually operationalized as measurable questions to group into some significant factors or dimensions. 5 sub-concepts under experience were borrowed from Bernd Schmitt's aboriginal inventories. Their significances and implications were also discussed.

어린이의 지방 섭취 저감화를 위한 교육 콘텐츠 및 교재 개발

김유경(Yoo Kyeong Kim),김주영(Ju Young Kim),차명화(Myeong Hwa Cha),이경애(Kyoung Ae Lee),이성숙(Sung Sug Lee),이경혜(Kyung Hea Lee) 대한지역사회영양학회 2009 대한지역사회영양학회지 Vol.14 No.2

This study was conducted to reduce children`s fat intake and to establish healthy dietary lifestyles. To achieve these goals, we searched, collected, and analyzed the materials related to the fat education, based on which the research personnel-professors and graduate students in nutrition and child education and elementary school teachers- discussed to figure out major topics, objectives, and detailed contents and activities appropriate for fat intake reduction. We also organized an advisory committee composed of 15 professionals in related fields to discuss the adequacy and validity of the specific contents. Finally, we systematically organized the contents and developed children`s textbooks and teacher`s guidebooks. Considering the different cognitive development stages of junior and senior elementary students we developed two different textbooks for each of them which are easy to read and understand, fun to play with lots of activities, and designed to practice into daily life. The contents cover three major topics-the concept of lipid, lipid in food, lipid in life and are composed of 6 units in total. To help teachers understand and and to instruct, teacher`s guidebooks contain an overview of the education, specific information and practical guidelines for each class. We developed these education materials with the aim of lowering children`s fat consumption and eventually promoting their health welfare; hopefully we expect these materials would be useful for children`s nutritional education in the field. (Korean J Community Nutrition 14(2):158~167, 2009)

퍼지제어기를 이용한 부하영향의 감소

김유경(Yoo-Kyung Kim),최태호(Tae-Ho Choi),전기준(Gi-Joon Jeon) 제어로봇시스템학회 1991 제어로봇시스템학회 국내학술대회 논문집 Vol.1 No.1

인터넷 광고의 내용분석을 통한 국가간 비교 연구

김유경(Yoo-Kyung Kim),김은희(Eun-Hee Kim) 한국방송학회 2001 한국방송학보 Vol.15 No.3

일-가정 균형의 개념과 일-가정 갈등 및 향상과의 관계:

김유경(Kim, Yoo-Kyung),구혜령(Koo, Hye-Ryoung) 한국가족학회 2016 가족과 문화 Vol.28 No.3

본 연구는 일-가정 균형의 개념을 재정의하고, 이러한 개념 정의를 바탕으로 기혼 남성의 일 및 가정생활만족도에 대한 일-가정 갈등 및 향상과 일-가정 균형의 영향을 확인하는 데 그 목적이 있다. 먼저 본 연구에서는 일-가정 균형을 일과 가정 역할의 수행을 위하여 일과 가정생활 양자에 쏟아야 하는 시간, 감정, 행동적 측면의 균형 정도와 두 가지 역할 간의 갈등 조절능력에 대한 스스로의 평가 및 주변사람들의 역할기대에의 부응 여부를 포함하는 개념으로 폭넓게 정의하였다. 기혼 남성 1,249명의 자료를 분석한 결과는 다음과 같다. 기혼 남성의 일-가정 갈등 및 향상과 일-가정균형과의 관계에 있어서 일-가정 향상의 경우 일→향상과 가정→일 향상 모두 일-가정 균형과 정적 상관을 보이는 반면, 일-가정 갈등의 경우 일→가정 갈등은 일-가정 균형과 부적 상관을 보이나 가정→일 갈등은 일-가정 균형과 관련이 없는 것으로 나타났다. 일 에 대한 만족도는 일-가정 갈등과는 상관이 없고 일-가정 향상과만 정적 상관이 있는 반면, 가정생활 만족도는 일-가정 갈등과 부적 상관이, 일-가정 향상과 정적 상관이 나타났다. 그리고 일에 대한 만족도와 가정생활 만족도는 정적 상관을 보였다. 마지막으로 일-가정 균형은 기혼 남성의 일에 대한 만족도와 가정생활만족도에 대해 일-가정 갈등과 일-가정 향상이 설명하는 것 이외에 추가적 변이를 설명하는 것으로 나타났다. 이를 바탕으로 남성근로자의 일에 대한 만족도와 가정생활 만족도 제고의 측면에서 이들의 일-가정 균형을 지원하기 위한 실천적 방안에 대해 논의하였다. This study aimed to refine previous conceptualization of work-family balance and to develop a measure of that, and furthermore, to examine the relationship of work-family balance with work and family satisfaction. Work-family balance was defined as the subjective recognition of balance in time, emotions and behavior between work and family domains, one’s self-assessment of the ability to deal with conflicts between the two roles, and the accomplishment of role-related expectations negotiated and shared between an individual and his/her role-related partners in the work and family domains. The results of the analysis of the data for 1,249 married men were as follows. Research showed positive correlations between two types of work-family enhancement (work-to-family enhancement and family-to-work enhancement) and work-family balance, but a negative correlation between only one type of work-family conflict(work-to-family conflict) and work-family balance. Family satisfaction had a negative correlation with work-family conflict, but a positive correlation with work-family enhancement or work-family balance. Job satisfaction had a positive correlation with family satisfaction. Finally, results suggested that balance explained variance beyond that explained by measure of conflict and enhancement for work and family satisfaction. We concluded with a discussion of the application of our work.

제주도에서 대륙쇠큰수염박쥐(Myotis aurascens)의 분포 현황 및 계통 유연관계

김유경(Yoo-Kyung Kim),박수곤(Su-Gon Park),김태욱(Tae-Wook Kim),박준호(Jun-Ho Park),프라딥 아디카리(Pradeep Adhikari),김가람(Ga-Ram Kim),박선미(Seon-Mi Park),이준원(Jun-Won Lee),한상현(Sang-Hyun Han),오홍식(Hong-Shik Oh) 한국생명과학회 2015 생명과학회지 Vol.25 No.12

본 연구는 제주도 서식이 명확히 확인되지 않았던 대륙쇠큰수염박쥐(M. aurascens)의 분포 현황과 계통 유연관계를 조사하기 위하여 수행되었다. 제주도 남서부의 진지동굴 3개 지역에서 대륙쇠큰수염박쥐 무리가 관찰되었다. 형태형질에 대한 비교결과에서 제주도 대륙쇠큰수염박쥐는 한반도 집단에 비해 HBL과 Hfu는 짧고, TL, EL, FAL, Tra는 더 길었다. 제주도 집단의 FAL, Hfcu는 유럽 집단보다 더 넓은 크기 변이를 나타내었다. 서식장소에 대한 주기적인 방문조사 결과, 같은 장소에서 대륙쇠큰수염박쥐들이 재확인이 되지 않았고, 이는 해안과 내륙의 진지동굴을 활동기 동안에 일간 휴식처로 이용하는 것으로 추정되었다. 본 연구에서 이용된 모든 제주도 박쥐들에서 두 가지 유전자(CYTB, COI)의 염기서열들이 모두 동일하게 나타나, 이들이 모두 동일한 모계의 후손들로 추정되었다. 분자 유전학적 연구결과는 제주도 대륙쇠큰수염박쥐의 서열들이 계통수 상에서 기존에 유럽과 아시아의 M. aurascens 서열들과 동일한 분지에 있었다. 뿐만 아니라, 제주도 집단에서 얻은 염기서열들은 한반도에서 보고된 대륙쇠큰수염박쥐의 서열과 가장 근연인 것으로 확인되었다. 결과적으로 본 연구를 통해 제주도에서 자연서식이 확인된 대륙쇠큰수염박쥐들은 모두 동일한 모계선조에서 기원하였고, 한반도나 다른 지역 집단들과는 형태적, 유전적으로 다른 배경을 보유하고 있어, 한반도를 경유하여 제주도로 이주해 온 집단으로 판단된다. 이상의 결과는 향후 제주도 포유동물의 유입경로와 생물지리학적 상관관계를 이해하는 데 있어 중요한 기초자료가 될 것이다. This study was aimed to investigate the distribution status and phylogenetic relationship of Myotis aurascens in Jeju Ialnd, which has not clearly confirmed until now. We found three groups of M. aurascens from three different cave enforcements (CEs). The bat population of Jeju Island had smaller levels of HBL and Hfcu, but greater levels of TL, EL, FAL, and Tra than those of the Korean Peninsula population. Jeju bats had wide range in the lengths of FAL and Hfcu comparing to those of European bats. From the bimonthly monitoring to each finding site, we have actually failed to observe those again, estimating that they use those CEs as the daily-roosting place in activating seasons. The sequences of CYTB and COI genes showed identical sequences among Jeju bats tested, indicating that they are maternally related. The results from molecular phylogeny showed that the sequences of these bats located on the same branch with those for M. aurascens in the phylogenetic trees. Besides, the nucleotide sequences of the Jeju bats showed the closest relation with that of Korean Peninsula. Consequently, these findings indicate that the bats of M. aurascens, verified the natural distribution in Jeju Island, have originated from a single maternal origin and differences in morphological and genetic backgrounds form those of Korean Peninsula and the other countries, and had probably immigrated via Korean Peninsula. These findings will contribute as basic information for understanding the migration history and biogeographic relationship of mammals on Jeju Island in East Asia.