The Impact of Taurine on Obesity-Induced Diabetes Mellitus: Mechanisms Underlying Its Effect

임정은,Kainat Ahmed,최하늘 대한내분비학회 2023 Endocrinology and metabolism Vol.38 No.5

This review explores the potential benefits of taurine in ameliorating the metabolic disorders of obesity and type 2 diabetes (T2D), highlighting the factors that bridge these associations. Relevant articles and studies were reviewed to conduct a comprehensive analysis of the relationship between obesity and the development of T2D and the effect of taurine on those conditions. The loss of normal β-cell function and development of T2D are associated with obesity-derived insulin resistance. The occurrence of diabetes has been linked to the low bioavailability of taurine, which plays critical roles in normal β-cell function, anti-oxidation, and anti-inflammation. The relationships among obesity, insulin resistance, β-cell dysfunction, and T2D are complex and intertwined. Taurine may play a role in ameliorating these metabolic disorders through different pathways, but further research is needed to fully understand its effects and potential as a therapeutic intervention.

직장남성의 성격특성과 의복디자인 선호도와의 관계연구

임정은,이명희 복식문화학회 1999 服飾文化硏究 Vol.7 No.5

The objectives of this study were to investigate the relation between personality(activity, emotional stability, and dominance) and clothing design preferences, and to examine the differences of clothing design preferences according to demographic variables of men. Subjects for the study were 255 male white-collar workers ranging in ages from twenties to fifties, in Seoul and Kwangju City, Korea. The men with higher activity of personality preferred the double jacket with 4 buttons, the combination of light color jacket and dark trousers, glen check pattern jacket, herringbone pattern jacket, light beige color dress shirts. The higher the emotional stability, the higher the preferences on diverse patterns such as fine stripe, plaid, hound\`s-tooth check, and small check pattern. The men with higher dominance preferred dark blue color suit, glen check pattern suit, and necktie of red circle, and disliked the necktie of gray circle. The men in their 20\`s and 30\`s liked the single jacket with 3 buttons, the suit of fine stripe and the necktie of gray circle more among three income groups. The higher the men\`s age and income were, the more they liked the conservative style such as a single jacket with 2 buttons. The men who reside in Seoul liked the suit of gray circle, the jacket and trousers of same color, the patternless jacket, and the patternless suit more than the men in Kwangju. Therefore, the men in methropolitan area preferred conservative clothing image. Fine stripe pattern and patternless materials were preferred when men wore jacket and trousers of same color, while glen check pattern was preferred as the pattern of jacket when jacket and trousers of different color. Male white-collar worker liked single jacket more than double jacket, and preferred the dark blue color suit and necktie, patternless suit, fine stripe suit, and the pale blue dress shirts generally. The present findings provide that the personality of male has influence on the clothing design preferences, and it is possible to infer men\`s personality by their attire.

무선 에드혹 네트워크에서 지역 기반 트리를 이용한 멀티캐스팅 프로토콜

임정은,유상조,Lim Jung-Eun,Yoo Sang-Jo 한국통신학회 2005 韓國通信學會論文誌 Vol.30 No.11B

본 논문에서는 무선 에드혹 네트워크에서 효율적인 데이터 전송을 위한 밀티캐스팅 프로토콜을 제안한다. 기존에 제안된 유무선망에서의 밀티캐스팅 프로토콜들은 이동성에 의한 망의 동적인 변화, 제한된 대역폭, 높은 에러율등의 특성을 지닌 무선 에드혹 네트워크 환경을 고려하지 못하여 이를 그대로 무선 에드혹 망에 적용할 경우 나쁜 성능을 보인다. 이를 해결하기 위하여 에드혹 네트워크 환경을 고려한 멀티캐스팅 프로토콜들이 제안되었다. 그러나 이들 프로토콜 또한 제어메시지 오버헤드와 대역폭의 낭비를 줄이는 동시에 높은 데이터 전달률을 제공하지는 못하고 있다. 따라서 본 논문에서는 이를 개선한 지역 기반 트리를 이용한 멀티캐스팅 프로토콜(RTMA)을 제안한다. 지역 기반 트리를 이용한 멀티캐스팅은 위치 정보를 이용하여 지역을 나누어 지역 별로 트리를 구성한다. 이것은 송신자의 수가 많은 경우에도 제어 메시지의 오버헤드를 줄이는 동시에 효율적인 데이터 전송을 위한 것이다. 또한 이동성에 대처하지 못하는 트리 구조의 특성을 보완하기 위하여 속도정보를 이용하여 이동성이 큰 노드를 경로에서 제외시켜 신뢰성 있는 트리를 구성한다. In this paper, we propose an effective multicasting protocol in wireless ad-hoc networks. Conventional wired and wireless network multicast protocols do not perform well in wireless ad hoc networks because they were designed without consideration of ad hoc environments such as node mobility, limited bandwidth, high error probability. To solve this problem, some multicasting protocols for ad hoc network have been proposed in the literature. However, these protocols can not provide high packet delivery ratio, low control packet overhead and low expended bandwidth at the same time. Therefore, in this paper, we propose RTMA that improves multicasting performance in wireless ad hoc networks. RTMA calculates its current region from its position information by using GPS in order to make tree among the multicast group nodes in the same region. The proposed region-based tree method is for high packet delivery ratio, low control packet overhead when many senders send data packets. RTMA makes a reliable tree by using speed information to fill a gap of the weak points of the tree structure. When searching the routing path, RTMA selects the reliable path excluding high speed nodes.

적응적 양자화 및 스캔 방법을 이용한 다시점 차영상 부호화에 관한 연구

임정은,손광훈 한국통신학회 2002 韓國通信學會論文誌 Vol.27 No.3A

다변량 분석기법을 활용한 중대재해 구조분석에 관한 연구

임정은,이홍철,박성준,Im, Jeong-Eun,Lee, Hong-Cheol,Park, Seong-Jun 대한인간공학회 2004 大韓人間工學會誌 Vol.23 No.4

The importance of the industrial safety has been growing gradually as well as the prevention activities on industrial accidents. Industrial accident rates have been decreasing by the prevention activities. However, the fatal industrial accidents such as the death tend to increase and risk per accident has increased. The previous studies on the industrial accidents focus on the entire accidents. However, these studies are lacking for the fatal industrial accidents such as the death. The purpose of this paper is to analyze the characteristics and trend of death which occurred by industrial accident, based on the real data of deaths collected last 5 years from 1999 to 2003 in korea. This paper suggests a analysis method using MDS(MultiDimensional Scaling) that considers accidents variables and properties simultaneously. We evaluate MDPREF (Multidimensional Analysis of Preference Data), one of the MDS analysis, to know the relations between the type of industry and region as well as the type of industry and occupation. This paper finds the type of industry which has high possibilities of death by regional groups. In addition, we find the type of occupation which has high possibilities of death by the type of industry. These findings indicate that industrial classification should be differently controled according to type of occupation and region.

소성가공 폐자원(굴껍질 및 달걀껍질)을 이용한 중금속 오염토양의 정화기술 개발

임정은 강원대학교 농업생명과학연구원(구 농업과학연구소) 2009 강원 농업생명환경연구 Vol.21 No.-

환경 중 중금속은 최종적으로 토양에 축적되며 작물로 전이되어 이를 섭취하는 동물과 인간건강에 치명적인 독성을 유발하게 된다. 이로 인해 과거부터 토양의 중금속 오염을 정화하기 위한 다양한 연구와 공법들이 진행되어왔다. 그러나 기존의 중금속 오염토양 정화방법은 적용 시 고가의 장비가 요구되며 농경지와 같이 상대적으로 저농도이며 광범위하게 오염된 지역에 적용하기에는 현실적으로 어렵다는 문제점을 가지고 있다. 이에 본 연구에서는 국내에서 대량으로 발생하는 폐자원인 굴껍질과 달걀껍질을 중금속 오염토양에 투입하여 그 효과를 평가하고 최종적으로는 폐자원을 재활용하는 중금속 정화기술을 개발하고자 하였다. 연구결과 CaCO3가 주성분인 굴껍질과 달걀껍질은 현행 토양환경보전법상 기준치 이하로 카드뮴과 납을 감소시킬 뿐만 아니라 식물로 전이되는 유효태 중금속도 감소시키는 것으로 나타났다. 한편, 안정화 효과의 증대를 위해 소성(Calcination)을 실시할 경우 중금속의 감소효과가 극대화되는 것으로 나타났다. 이와 더불어 굴껍질과 달걀껍질이 중금속 오염토양에 처리되는 경우 중금속의 안정화뿐만 아니라 pH의 개량효과와 치환성 칼슘과 같은 식물양분의 공급효과를 기대할 수 있어 향후 매우 효과적인 토양개량제가 될 수 있을 것으로 판단된다.

Lead Stabilization in Soil Amended with Lime Waste: An Extended X-ray Absorption Fine Structure (EXAFS) Investigation

임정은,옥용식,양재의,이상수 한국토양비료학회 2014 한국토양비료학회지 Vol.47 No.6

To determine Pb species in soils following the immobilization process, sequential extraction has been useddespite the possibility of overestimating Pb species from unintended reactions during chemical extraction. Meanwhile, the application of extended X-ray absorption fine structure (EXAFS) has been shown to providea more precise result than chemical extraction. In this study, the immobilization of Pb in contaminated soilstreated with liming materials such as oyster shell (OS) or eggshell (ES) was evaluated with thermodynamicmodelling and EXAFS analysis. Thermodynamic modelling by visual MINTEQ predicted the precipitation ofPb(OH)2 in OS and ES treated soils. In particular, the values of saturation index (SI) for Pb(OH)2 in OS(SI=0.286) and ES (SI=0.453) treated soils were greater than in the control soil (SI=0.281). Linearcombination fitting (LCF) analysis confirmed the presence of C12H10O14Pb3 (lead citrate, 44.7%) by citric acidfrom plant root, Pb-gibbsite (Pb adsorbed gibbsite, 26.4%), and Pb-kaolinite (Pb adsorbed kaolinite, 20.3%) inthe control soil. On the other hand, Pb(OH)2 (16.8%), Pb-gibbsite (39.3%), and Pb-kaolinite (25.6%) wereobserved in the OS treated soil and Pb(OH)2 (55.2%) and Pb-gibbsite (33.8%) were also confirmed in the EStreated soil. Our results indicate that the treatment with OS and ES immobilizes Pb by adsorption of Pb ontothe soil minerals as a result of the increase in soil negative charge and the formation of stable Pb(OH)2 underhigh pH condition of soils.

짝 미술치료가 ADHD 아동의 정서지능에 미치는 영향

임정은,신지현 한국예술심리치료학회 2017 예술심리치료연구 Vol.13 No.3

이 연구에서는 짝 미술치료가 ADHD 아동의 정서지능에 어떠한 영향을 미치는지 알아보고자 하였다. 연구대상은 상담센터에 의뢰된 초등학교 저학년이며 ADHD 진단을 받고 부모의 동의를 얻은 아동들로 한정하여 실험집단 6명과 통제집단 6명을 연구대상으로 선정하였다. 연구기간은 2014년 12월 30일부터 2015년 4월 29일까지이며, D상담센터 미술치료실에서 주 1회기씩 60분씩 사전‧사후 검사를 제외 한 총 12회기가 진행되었다. 측정도구는 대상자들의 정서지능을 알아보기 위해 정서지능검사와 HTP그림검사를 실시하였다. 연구 결과를 요약하면 다음과 같다. 첫째, 실험집단의 정서지능 점수는 통제집단에 비해 통계적으로 유의하게 증가하였고, 하위영역인 정서인식, 정서표현, 감정이입, 정서조절에서도 유의미한 결과를 볼 수 있었다. 둘째, HTP그림검사의 양적 분석 결과 총점에서 통계적으로 유의미한 결과를 얻었다. 이 연구에서는 ADHD 아동을 대상으로 외부환경의 영향을 최소화하고 조금 더 자신과 타인의 정서에 집중하게 도와주는 짝 활동을 통해 미술치료가 ADHD 아동의 정서지능 향상에 긍정적인 영향이 있었던 것으로 본다. 따라서 앞으로 ADHD 아동을 대상으로 한 심리치료의 기초적인 임상자료로 활용되기를 기대해 본다. The research has demonstrated that how group pair art therapy effects on the emotional intelligence of ADHD(Attention Deficit Hyperactivity Disorder) children. 6 persons were selected for the experimental group and another 6 persons were selected for the controlled group. Twelve meetings were held for 60 minutes once a week for the research which was conducted from December 2014 to May 2015, with the preliminary and post examination. Emotional intelligence tests and House-Tree-Person(HTP) tests were conducted for measuring emotional intelligence of a test subject group. The results of this study are summarized as follows. First, emotional intelligence score of the experimental group increased significantly in statistics compared to the controlled group. The results in the subordinate scope was also relevant. Second, the outcome of quantity analysis of House-Tree-Person (HTP) was improved statically. This study suggests that art therapy has a positive effect on improving the emotional intelligence of children with ADHD through a pair of activities that minimize the influence of the external environment and focus more on oneself and others' emotions. In conclusion, this research can be used as a basic clinical material in psychotherapy for the ADHD children.

혈액-뇌종양 장벽 모사를 위한 3 차원 뇌종양 스페로이드 결합 미세유체 플랫폼

임정은,이형록,전누리 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.4

The blood-brain tumor barrier (BTB) has been known as a vasculature compromised by brain tumors. This dysfunctional barrier can be characterized by its heterogeneity and a number of distinct features. These characteristics include low junction protein expression, non-uniform permeability, and expression of active efflux transporters. Furthermore, stromal cells surrounding the endothelial barrier, such as astrocytes and pericytes, react by the interaction with brain tumors. To recapitulate the complex structure and function of the brain tumor microenvironment, in vivo-like composition should be well-constructed. In this study, the in vivo solid brain tumor-like three-dimensional brain tumor spheroids consisting of brain tumor cellular components are constructed. Moreover, the microfluidic platform allows for microvascularization of the brain tumor spheroid. In conclusion, the microvascularized brain tumor spheroid in the microfluidic platform can provide a drug delivery testing system through BTB as an innovative preclinical brain cancer model.

The Relation between Fertilization Practices and Functional Metabolites of Crops: A Review

임정은,조민지,윤혜진,하상건,이덕배,성좌경 한국토양비료학회 2016 한국토양비료학회지 Vol.49 No.2

Various researches on the effects of fertilization levels on functional metabolites in crop have been conducted. This review summarizes the previous studies on the relation between fertilization supply and accumulation of metabolites (phenolics, carotenoids, ascorbic acid and glucosinolates) which function as antioxidants in crop. The accumulation of phenolic compounds is related to the activation of phenylalanine ammonia lyase (PAL) in phenylpropanoid pathway. Most of the previous studies discuss that low nitrogen (N) supply activates PAL, thereby increasing the synthesis of phenolics. Similarly, high N supply leads to a decrease in ascorbic acid because of the shading effect derived from the accelerated vegetative growth under high N level. Unlike the phenolics and ascorbic acid, carotenoids are accumulated with increasing N supply. In this regard, the previous studies explain that N is a main element closely associated with formation of key enzyme for the synthesis of carotenoids. Glucosinolates are generally increased under decreasing N supply and increasing S supply. Although the previous studies show similar trends about the accumulation of metabolites by nutrient level, they also suggest that many other factors including crop types, cultivars, cultural environment (water, temperature, light, etc.) influence the accumulation of functional metabolites in crop.