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지하수 유동 방향에 대한 관정배열이 분배추적자 시험에 미치는 영향 분석
김보아,김용철,여인욱,고경석,Kim, Bo-A,Kim, Yongcheol,Yeo, In Wook,Ko, Kyung-Seok 한국지하수토양환경학회 2014 지하수토양환경 Vol.19 No.3
Partitioning interwell tracer test (PITT) is a method to quantify and qualify a site contaminated with NAPLs (Non-Aqueous Phase Liquids). Analytical description of PITT assumes that the injection-pumping well pair is on the line of the ambient groundwater flow direction, but the test-well pair could frequently be off the line in a real field site, which could be an erroneous factor in analyzing PITT data. The purpose of this work is to study the influence of the angle of the test-well pair on the ambient groundwater flow direction based on the result from PITT. From the experiments, it was found that the obliqueness of the test-well pair to the ambient groundwater flow direction could affect the tracer test resulting in a decreased NAPL estimation efficiency. In case of an oblique arrangement of the test-well pair to the ambient flow direction, it was found that the injection of a chase fluid could enhance the estimation efficiency. An increase of the pumping rate could enhance the recovery rate but it cannot be said that a high pumping rate can increase the test efficiency because a high pumping rate cannot give partitioning tracers enough time to partition into NAPLs. The results have a implication that because the arrangement of the test-well pair is a controlling factor in performing and interpreting PITT in the field in addition to the known factors such as heterogeneity and the source zone architecture, flow direction should be seriously considered in arranging test-well pair.
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20대 한국 직장인의 음주 심각도에 대한 직무 스트레스와 BDNF 유전자 다형성의 역할
김보아,이상익,김시경,신철진,손정우,홍주봉,남영우,주가원,Kim, Bo-Ah,Lee, Sang-Ick,Kim, Sie-Kyeong,Shin, Chul-Jin,Son, Jung-Woo,Hong, Joo-Bong,Nam, Yeong-Woo,Ju, Ga-Won 대한생물정신의학회 2012 생물정신의학 Vol.19 No.2
Objectives : The aim of this study was to examine the effects of brain-derived neurotrophic factor (BDNF) genetic polymorphism and job stress on the severity of alcohol drinking. It was hypothesized that individuals with the Met/Met BDNF genotype would be more vulnerable than those carrying the Val allele. Methods : Participants were 133 healthy Korean adults (mean age $28.2{\pm}1.1$). Job stress and the severity index of drinking were investigated through self-reported questionnaires. BDNF (rs6265) gene was genotyped. Results : There was no significant association between job stress and the severity of alcohol drinking. Although the severity of alcohol drinking was not associated with BDNF genetic polymorphism, there was a significant difference in men according to genotype and job stress. Men with homozygous BDNF Met allele were more severe in alcohol drinking when job stress was high, less severe in alcohol drinking when job stress was low than those carrying the Val allele (F = 4.47, p = 0.038). Also higher level of job stress was correlated with higher severity of alcohol drinking in men homozygous for BDNF Met allele (rs = 0.620, p = 0.005). Conclusions : These findings suggest the possibility that Met allele could have differential susceptibility, with men homozygous for BDNF Met allele being more susceptible to both more adverse and less adverse environmental influences.
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생애주기별 치아관리를 위한 IoT 덴탈케어 제품 - 서비스 디자인 개발 연구
김보아,임혜원,정도성 한국기초조형학회 2018 기초조형학연구 Vol.19 No.6
Human teeth have to be taken care of to avoid tooth damage until old age since permanent teeth formed after baby teeth come out do not regenerate. 87% of the people in Korea suffer from oral diseases, but only a few of them regularly go to the dentist to take care of teeth. Dental diseases, especially, occur at different times depending on human beings’ growth and aging, so monitoring and timely care are important. Various IoT and oral care products are launched recently, but they focus on certain functions such as dental bleaching and hygiene. Therefore, there is a problem with properly managing teeth care and dealing with dental diseases in the long term. Thus, dental care products to use for long and take care of teeth according to life cycle are necessary. This study intends to suggest dental care products and service design that make it possible to keep teeth healthy, take good care of them and prevent dental diseases according to life cycle by analyzing the users and the existing products. Theoretical consideration of IoT, and users by life cycle and their dental diseases were investigated through a literature research and advanced researches. An analysis of the existing products and users was carried out. The analysis of the existing products showed that the products were divided into three―edutainment, dental bleaching and treatment and diagnosis, and most of them were size-bound and not for sustainable use. In addition, an in-depth interview targeting the users by life cycle was conducted to find out their ways to take care of teeth and wrote personas by age. The result of analysis of the users showed that there were differences on dental care and purpose of use, temporary treatment, difficulty in finding out when to start a treatment, difficulty in carrying out continuous treatment and etc. This study suggests a product with sterilization and care effects facilitating mutual information communication with hospitals and a dental care product-service proposing problem solutions related to dental care and preventing diseases. 인간의 치아는 유아기 유치 생성 후 영구치로 바뀌면 재생되지 않으므로 노년까지 치아가 손상되지 않도록 관리해야한다. 우리나라 국민 87% 구강질환을 경험이 있으나 정기적으로 병원을 방문하여 관리하는 경우는 소수의 불구하다. 특히 치아 질환은 인간의 성장과 노화에 따라 발생 시기가 달라 모니터링과 시기적절한 관리가 중요하다. 최근 다양한 IoT 및 스마트 구강관리 제품을 출시하고 있으나 미백, 위생 등 특정 기능을 중심으로 제공하고 있어 장기적인관점에서 치아관리과 질환에 따라 적절하게 대응하기 어려운 문제점이 있다. 따라서 장기적으로 사용하며 생애주기에 따라 치아관리 할 수 있는 덴탈케어 제품이 필요한 실정이다. 본 연구에서는 사용자 및 기존 제품분석을 통해 생애주기에 따라 유지·관리·예방이 가능한 덴탈케어 제품과 서비스디자인 제안 연구를 진행하고자 한다. 문헌조사와 선행연구를 통해 생애주기별 사용자 및 구강질환, 사물인터넷의 이론적 고찰을 살펴보았으며, 기존 제품 및 사용자 분석을 진행하였다. 기존 제품을 분석한 결과 에듀테인먼트, 미백관리, 치료진단 타입으로 분류할 수 있었으며, 대부분 제품 크기가 한정적이고 지속적 사용이 어려운 것을 알 수 있었다. 또한 사용자 분석을 위해 생애주기별 사용자에 따라 심층인터뷰를 진행하여 치아관리 행태를 조사하였으며 연령대별 페르소나를 작성하였다. 사용자 분석 결과 치아 관리 및 사용 목적의 차이, 단발성 치료, 치료 시기 파악의 어려움, 지속적인 관리의 어려움 등이 주요 문제점으로 발견되었다. 본 연구에서는 사용자가 제품을 사용하며 살균·케어 효과 및 병원과의 상호 정보 전달이 가능한 한 제품을 제안하고자 하며 구강 관리에 대한 문제해결방안 제시와 질병 예방을 함께 해결 가능한 덴탈케어 제품-서비스를 제안하고자 한다.
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김보아,공소라,송준임,원용진 한국동물분류학회 2008 Animal Systematics, Evolution and Diversity Vol.24 No.3
Soft coral Dendronephthya gigantea (Verrill, 1864) is a conspicuous species dominating shallow sea waters of Jejudo Island, Korea. Recently its whole mitochondrial genome sequencing was completed by us and the sequence information provided an opportunity to test the age of Octocorallia and time of evolutionary separation between some representative orders of the subclass Octocorallia. Molecular phylogenetic analyses based on 13 mitochondrial protein encoding genes revealed a polyphyletic relationship among octocorallians representing two orders (Alcyonacea and Gorgonacea) and four families (Alcyoniidae, Nephtheidae, Briareidae, and Gorgoniidae). Estimates of divergence times among octocorallians indicate that the first splitting might occur around end of or after Cretaceous period (50-79 million years ago (Ma)). The age is relatively young compared to the long history of stony sea corals (¤240 Ma). Taken together our result suggests a possible relatively recent radiating evolution at least in the order Alcyonacea and Gorgonacea. Molecular dating and phylogenetic analysis based on much broader taxon sampling and many genes might give an insight into this interesting hypothesis.
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