복원된 양재천에서 복원 효과 평가 및 평가 결과에 기초한 개선방안

김아름,김동욱,임봉순,설재원,이창석,Kim, A Reum,Kim, Dong Uk,Lim, Bong Soon,Seol, Jae Won,Lee, Chang Seok 한국하천호수학회 2020 생태와 환경 Vol.53 No.4

This study was carried out to evaluate the restoration effect in the restored Yangjae stream and to draw up an adaptive management plan based on the results. As the result of evaluation on the restoration effect, the restored Yangjae stream was evaluated with low naturalness in both terms of the morphology of the stream and the composition and spatial distribution of vegetation. The diverse functional groups were introduced in the vegetation restoration, but the flooding regime, which is significant in the spatial distribution of riparian vegetation, were not correctly reflected. Exotic species or species that were not ecologically suitable for the location were introduced on the embankment and thus a measure to improve those problems is required. As the ecological principle was not reflected in the restoration plan, the stream was constructed as the double terrace structure. Therefore, the width of the waterway was narrowed further, and the waterfront was not designed to accommodate changes from flooding disturbance, making the micro-topography of the stream simpler and the naturalness lower. The adaptive management plan was prepared to improve those problems, and a plan for creating an ecological network was recommended to enhance the restoration effect.

IEEE 802.15.4기반 센서 네트워크에서 슬립거부 공격의 취약성 분석 및 탐지 메커니즘

김아름,김미희,채기준,Kim, A-Reum,Kim, Mi-Hui,Chae, Ki-Joon 한국정보처리학회 2010 정보처리학회논문지 C : 정보통신,정보보안 Vol.17 No.1

IEEE 802.15.4[1] has been standardized for the physical layer and MAC layer of LR-PANs(Low Rate-Wireless Personal Area Networks) as a technology for operations with low power on sensor networks. The standardization is applied to the variety of applications in the shortrange wireless communication with limited output and performance, for example wireless sensor or virtual wire, but it includes vulnerabilities for various attacks because of the lack of security researches. In this paper, we analyze the vulnerabilities against the denial of sleep attacks on the MAC layer of IEEE 802.15.4, and propose a detection mechanism against it. In results, we analyzed the possibilities of denial of sleep attacks by the modification of superframe, the modification of CW(Contention Window), the process of channel scan or PAN association, and so on. Moreover, we comprehended that some of these attacks can mount even though the standardized security services such as encryption or authentication are performed. In addition to, we model for denial of sleep attacks by Beacon/Association Request messages, and propose a detection mechanism against them. This detection mechanism utilizes the management table consisting of the interval and node ID of request messages, and signal strength. In simulation results, we can show the effect of attacks, the detection possibility and performance superiorities of proposed mechanism. IEEE 802.15.4 표준기술[1]은 센서 네트워크에서 저전력을 위한 기술로 LR-WPANs(Low Rate-Wireless Personal Area Networks)의 물리 계층과 MAC계층을 규정한다. 이 표준은 무선 센서, 가상 선(Virtual Wire)과 같은 제한된 출력과 성능으로 간단한 단거리 무선 통신을 필요로 하는 폭넓은 응용에 활용되고 있지만 보안 측면의 연구는 현재 미비한 상태로 다양한 공격에 대한 취약점을 내포하고 있다. 본 논문에서는 802.15.4 MAC계층의 슬립거부(Denial of Sleep) 공격에 대한 취약성을 분석하고 이를 탐지하는 메커니즘을 제안한다. 분석 결과, 슈퍼프레임 구간 변경, CW(Contention Window)값 변경, 채널스캔 및 PAN 연합과정 등에서 슬립거부 공격의 가능성을 분석할 수 있었고, 이 과정 중 일부에서는 표준에서 정의한 인증과 암호화 기능이 적용되어도 공격 가능함을 알 수 있었다. 또한 본 논문에서는 분석된 취약점 중에 채널스캔 및 PAN 연합과정에서 Beacon/Association Request 메시지 위조를 통한 슬립거부 공격의 탐지 메커니즘을 제안한다. 제안된 메커니즘은 메시지 요청 간격, 요청 노드 ID, 신호 세기 등을 모니터링하여 공격을 식별하여 탐지한다. QualNet 시뮬레이션 툴을 사용하여 공격의 영향 및 제안된 탐지 메커니즘의 탐지 가능성과 성능의 우수성을 입증할 수 있었다.

상황버섯 추출물의 항산화 및 성분분석

김아름 ( A Reum Kim ),김정은 ( Jung Eun Kim ),박수남 ( Soo Nam Park ) 대한화장품학회 2011 대한화장품학회지 Vol.37 No.4

본 연구에서는 상황버섯 추출물의 항산화 및 항노화 활성 및 항균 효과, 그리고 성분분석에 관한 연구를 수행하였다. 상황버섯 추출물의 자유 라디칼(1,1-diphenyl-2- picrylhydrazyl, DPPH) 소거활성(FSC₅₀)은 에틸아세테이트(ethyl acetate) 분획(2.94 μg/mL)에서 가장 큰 활성을 나타내었고, 루미놀-의존성 화학발광법을 이용한 Fe³⁺-EDTA/H₂O₂ 계에서 생성된 활성산소종(reactive oxygen species, ROS)에 대한 상황버섯 추출물의 총항산화능은 추출물의 에틸아세테이트 분획(0.0072 μg/mL)에서 가장 큰 활성을 나타내었다. 광증감제인 rose-bengal로 증감된 사람 적혈구의 광용혈에 대한 억제 효과를 측정하였을 때 농도범위(5 ~ 50 μg/mL)에서 50 % 에탄올 추출물과 에틸아세테이트 분획 모두 농도·의존적으로 세포 보호 효과를 나타내었다. 타이로시네이즈의 활성 저해 효과(IC₅₀)를 측정한 결과 50 % 에탄올 추출물(IC₅₀ = 6.34 μg/mL)에서 우수한 효과를 나타내었으며, 엘라스테이즈의 활성 저해 효과(IC₅₀)는 에틸아세테이트 분획(IC₅₀ = 14.08 μg/mL)에서 큰 효과가 나타났다. TLC, HPLC 및 LC/ESI-MS를 이용하여 상황버섯 추출물 ethyl acetate 분획의 주성분을 분석하였고 hispidin 유도체인 interfungin A를 확인하였다. 이상의 결과들은 상황버섯 추출물이 ROS에 대항하여 세포막을 보호함으로써 생체계, 특히 태양 자외선에 노출된 피부에서 항산화제로써 작용할 수 있으며, 특히 상황버섯 추출물의 에틸아세테이트 분획을 항산화, 항노화 및 미백 기능성 화장품 소재로써의 응용 가능성을 확인하였다. In this study, the antioxidative effect, antibacterial, inhibitory effects on tyrosinase, inhibitory effects on elastase and component analysis of Phellinus linteus (P. linteus) extracts were investigated. The ethyl acetate fraction of P. linteus extracts (2.94 μg/mL) showed the highest free radical (1,1-diphenyl-2-picrylhydrazyl, DPPH) scavenging activity (FSC₅₀). Reactive oxygen species (ROS) scavenging activity (OSC₅₀) of P. linteus extracts on ROS generated in Fe³⁺-EDTA/H₂O₂ system was investigated using the luminol-dependent chemiluminescence assay. The ethyl acetate fraction (0.0072 μg/mL) showed the most prominent ROS scavenging activity. The protective effects of extract/fractions of P. linteus extracts on the rose-bengal sensitized photohemolysis of human erythrocytes were investigated. The P. linteus extracts showed cellular membrane protective effects in a concentration dependent manner (5 ~ 50 μg/mL). The inhibitory effect (IC₅₀) on tyrosinase of P. linteus extract was the highest at 50 % ethanol extract (6.34 μg/mL), and the inhibitory effect (IC₅₀) on elastase of P. linteus was the highest at ethyl acetate fraction (14.08 μg/mL). TLC, HPLC chromatogram and LC/ESI-MS of the ethyl acetate fraction obtained from P. linteus extracts were identified interfungin A (PL RPT-1a). These results indicate that extract/fractions of P. linteus can function as antioxidants in biological systems, particularly skin exposed to UV radiation by scavenging ROS, and protect cellular membranes against ROS. Extract/fractions of P. linteus can be applicable to new cosmeceuticals for antioxidant, antiaging, antiwrinkle and whitening.

PVA 중합도가 고상-액상 혼합 방식에 의한 YAG:Ce³⁺ 형광체 분말 합성에 미치는 영향

김아름,이상진,Kim, A-Reum,Lee, Sang-Jin 한국세라믹학회 2014 한국세라믹학회지 Vol.51 No.5

YAG:$Ce^{3+}$ phosphor powders were synthesized using $Al(OH)_3$ seeds by means of a PVA-polymer-solution route. Various types of PVA with different molecular weights (different polymerization) were used. All dried precursor gels were calcined at $500^{\circ}C$ and then heated at $1500^{\circ}C$ in a mix of nitrogen and hydrogen gases. The final powders were characterized via XRD, SEM, PSA, PL, and PKG analyses. The phosphor properties and morphologies of the synthesized powders were dependent on the PVA type. As the molecular weight of the PVA was increased, the particle size gradually decreased with agglomeration, and the luminous intensity of the phosphor increased. However, the phosphor powder prepared from the PVA exhibiting very high molecular weight, showed a 531 nm (blue) shift from the 541 nm (yellow) wavelength of the YAG:$Ce^{3+}$ phosphor. Finally, the synthesized YAG:$Ce^{3+}$ phosphor powder prepared from the PVA with 89,000 - 98,000 molecular weight showed phosphor properties similar to those of a commercial phosphor powder, but without a post-treatment process.

Streptococcus gordonii, Fusobacterium nucleatum 및 Porphyromonas gingivalis의 상호작용이 성장에 미치는 영향

김아름 ( A Reum Kim ),정문진 ( Moon Jin Jeong ),안용순 ( Yong Soon An ),김미나 ( Mi Na Kim ),김성임 ( Sung Im Kim ),임도선 ( Do Seon Lim ) 한국치위생과학회 2015 치위생과학회지 Vol.15 No.2

In order to explore an effect of interaction of Streptococcus gordonii, Fusobacterium nucleatum and Porphyromonas gingivalis that are bacteria relevant to periodontal disease on its growth, the bacteria were incubated in trypticase soy hemin menadione broth at 37oC CO2 incubator for 7 days through anaerobic jar by single and co-culture with heat treated dead bacteria under anaerobic gas pack. In order to confirm growth level, absorbance was measured and for confirming colony structure and form, it was observed with scanning electron microscope. In order to confirm an effect on pathogenicity of P. gingivalis, real time reverse transcriptase polymerase chain reaction was implemented for expression analysis for rgpA gene that produces HRgpA which is gingipain. As a result, the following conclusion was obtained. Colony formation of S. gordonii and P. gingivalis was increased by other dead bacteria and in case of F. nucleatum, its colony formation was showed an aspect of being increased by dead bacterium of P. gingivalis but decreased by dead bacterium of S. gordonii. Therefore, it is considered that the strains being used for this study would affect interactively through bacterial cell itself as well as their interaction factor at the time of colony formation.

전문가와 비전문가의 모발건조 행위가 손상도 인식, 관심도, 만족도에 미치는 영향

김아름(Kim, A Reum),조지훈(Cho, Ji Hoon) 한국디자인문화학회 2018 한국디자인문화학회지 Vol.24 No.1

본 연구는 전문가와 비전문가의 모발건조 행위에 따른 손상도 인식, 모발건조 관심도, 만족도에 관한 영향을 분석하여 모발건조 행위에 대한 미용전문가의 기초자료와 활용방안을 도출하고자 연구하였다. 연구의 분석은 SPSS WIN 21.O을 사용하여 빈도분석, 탐색적 요인분석, 다중회귀분석을 실시하였다. 본 연구의 결과는 다음과 같다. 첫째, 전문가는 모발건조 행위의 선택적 요인이 높을수록, 비전문가는 모발건조행위의 조건적 요인이 높을수록 손상도 인식(β=.356, p<.01, β=.331, p<.001), (β=.252, p<.01, β=.161, p<.05), 모발건조 관심도(β=.213, p<.01, β=.285, p<.001), 만족도(β=.167, p<.01, β=.206, p<.01), (β=.219, p<.01, β=.167, p<.05)에 영향을 미치는 것으로 나타났다. 둘째, 간접적 손상인식이 높을수록 전문가와 비전문가 모두에서 감각적 만족도(β=.275, p<.01, β=.173, p<.05) 가 높은 것으로 나타났고, 직접적 손상인식이 높을수록 지각적 만족도(β=.174, p<.05)도 높아지는 것은 전문가에게서만 나타났다. 셋째, 모발건조 행위에 대한 모발건조 관심도가 높으면 전문가와 비전문가 모두에서 감각적 만족도(β=.346, p<.001, β=.267, p<.001)와 지각적 만족도(β=.504, p<.001, β=.466, p<.001)도 높은 결과가 나타났다. 이러한 결과는 모발건조 행위가 전문가의 관점에서는 선택적, 지각적으로 판단되고 비전문가의 관점에서는 조건적, 감각적으로 판단되고 있음을 시사한다. 그러므로 전문가는 고객인 비전문가의 보편적이고 일반적인 사고를 인식하여 모발건조 행위를 제공하기를 제안한다. 이는 미용전문가가 비전문가의 신뢰와 만족을 획득할 수 있게 하는 긍정적 효과가 유발되는 것에 의의를 갖는다. 그러나 특정하지는 않았지만 지역적 한계가 있고, 대상자가 부족함으로 표준화하기에는 미흡하다할 수 있다. 따라서 향후 보완적인 연구가 이뤄지기를 기대한다. The purpose of this study was to investigate the effects of hair dryness behavior between specialist and non-specialist on the degree of damage awareness, interest, and satisfaction. Through this study, this paper has studied this to derive the basic data and application plan of beauty specialists on hair drying behavior. SPSS WIN 21.O was used for the analysis of the study. Frequency analysis, exploratory factor analysis, and multiple regression analysis were performed. The results of this study are as follows. First, to the specialist, the degree of damage awareness (β=.356, p<.01, β=.331, p<.001), interest (β=.213, p<.01, β=.285, p<.001), and satisfaction (β=.167, p<.01, β=.206, p<.01), (β=.219, p<.01, β=.167, p<.05) were affect to the higher the selective factor of hair dryness. And to the non-specialist, affect to the higher the conditional factors of the hair drying act. Second, to the both specialist and non-specialist, the higher the indirect damage awareness, the higher the sensory satisfaction (β=.275, p<.01, β=.173, p<.05), and it was shown only to specialist the higher the direct damage awareness, the higher the perceptual satisfaction (β=.174, p<.05). Third, the higher the degree of interest in the hair drying behavior, the higher the sensory satisfaction (β =.346, p<.001, β=.267, p<.001) and the perceived satisfaction (β=.504, p<.001, β=.466, p<.001) were also high to the specialist and non-specialist both. These results suggest that hair drying behavior is judged selectively and perceived from the viewpoint of specialists and from the viewpoint of non-specialists, it is judged conditional and sensory. Therefore, this paper suggests that the specialist need to recognizes the universal and general thought of non-specialist who is the client, and provide hair-drying behavior. This implies that a positive effect is created which enables the beauty specialist to obtain the trust and satisfaction of the non-specialist. However, it is not specific, but there are regional limitations, and there is insufficient standardization due to lack of target person. Therefore, it is expected that complementary study will be done in the future.

자기과신과 금융사기 피해와의 관계 - 구조적 선택이론의 적용 -

김아름 ( Kim A Reum ),양혜경 ( Yang Hae Kyung ) 한국소비자학회 2020 소비자학연구 Vol.31 No.3

본 연구는 우리나라 성인 금융소비자를 대상으로 자기과신과 금융사기 피해 간의 관계를 살펴보고자 하였다. 이를 위해 범죄학 이론인 구조적 선택이론의 구성요인(근접성, 노출취약성, 표적매력성, 보호성)이 대표적인 행동편향으로 볼 수 있는 자기과신을 통하여 금융사기 피해에 영향을 미치는지 살피고자 한다. 실증분석을 위하여 한국금융투자자 보호재단에서 시행하고 있는 펀드투자자조사의 3개년도 2015년·2016년·2017년 자료를 분석하였으며, 본 연구의 주요 결과는 다음과 같다. 첫째, 2015~2017년 3년의 기간 동안 연평균 약 3.2%가 금융사기 피해를 당했으며, 피해 액수는 최대 10억 원, 평균 2,200여만 원이고, 사기유형으로는 전화금융 사기(보이스 피싱) 비율이 가장 높은 것으로 나타났다. 둘째, 교차분석 결과, 노후대비를 하는 집단이 금융사기 피해를 경험하는 것으로 나타났으며, 월평균 가구소득이 300만원 미만인 집단과 700만원 이상인 집단이 금융사기 피해 경험비중이 높은 것으로 나타났다. 셋째, 노출취약성과 자기과신 간의 상호작용 효과를 분석하기 위하여 위계적 이항로지스틱 회귀분석을 실시한 결과, 노후를 대비할수록, 보유한 금융상품 종류가 많을수록 금융사기 피해확률이 높았으며, 월평균 가구소득이 300만원 미만보다 300~499, 500~699만원 집단일 때 금융사기 피해확률이 낮은 것으로 나타났다. 또한, 자기과신성향이 높을수록 금융사기 위험이 큰 것으로 나타났으며, 자기과신 수준이 높고, 보유한 금융상품 종류가 다양할수록 금융사기를 당할 확률이 높아지는 것으로 나타났다. 가계보유 금융상품 종류에 대하여 요인분석을 시행한 결과, 파생상품·펀드상품을 많이 보유할수록 금융사기 위험이 커질 수 있는 것으로 나타났다. 본 연구는 자기과신과 금융사기 피해와의 관련성을 입증하였으며, 금융상품 보유상태에 따라서 금융사기에 영향을 주는 변수들에 차이가 있다는 것을 확인하였다. 본 연구의 결과는 금융소비자 보호에 보유금융상품과 자기과신의 요소를 고려하여 금융사기에 취약할 수 있는 금융소비자에게 맞춤형 예방 교육 및 사후교육을 시행할 수 있는 기초적인 자료가 될 것으로 사료된다. The purposes of this study are to identify the level of overconfidence and to examine the relationship of overconfidence and financial fraud of financial consumers in Korea. This study examines four components of victimization; physical proximity to the motivated offender, exposure to the high-risk environment, target attractiveness and capable guardianship, and their relations with financial fraud through overconfidence. We analyzed 2015, 2016, 2017 waves of Fund Investor Survey collected by the Korea Investors Protection Foundation. The main results of this study are as follows: First, on average 3.2% of financial consumers are scammed in each year during our study periods. The highest loss was one billion won with an average of 22 million won. The fraud type which most often occurred was tele-financial fraud (voice phishing). Second, those who prepare for retirement and those with average monthly household income with less than 3 million won or more than 7 million won were more likely to experience financial fraud. Third, regression analyses report those who prepare for retirement, those with more investments are more likely to experience financial fraud. Compared to low income household with average household income less than 3 million won, those with household income more than 3 million won are less likely to experience financial fraud. Those with higher overconfidence and with more financial investments are more likely to experience financial fraud. The risk of financial fraud is higher for those who invest in derivatives and mutual funds. This study found a relationship between overconfidence and financial fraud and factors for financial fraud by types of financial investments. The results of this study provide implications for financial consumer protection policy and education.

인공지능 기반 로보어드바이저(Robo-advisor) 사용의사결정에 대한 탐색적 연구

김아름(Kim, A Reum),앙혜경(Yang, Hae Kyung) 한국경영교육학회 2021 경영교육연구 Vol.36 No.1

[연구목적] 로보어드바이저는 인공지능을 기반으로 온라인에서 투자자문이나 투자관리를 제공하는 자동화된 투자관리서비스로 최근 들어 로보어드바이저 시장이 성장하고 있는 것에 비해 로보어드바이저 사용자 관점에서의 연구는 부족한 실정이다. 본 연구는 로보어드바이저 사용자의 사용의사결정에 대한 심층적인 이해를 위해 심층 인터뷰를 수행하여 로보어드바이저 사용행동의 맥락을 이해하는 것이 목적이다. [연구방법] 로보어드바이저 사용자를 대상으로 진행한 심층 인터뷰 텍스트는 NVivo Release 1을 활용하여 분석하였으며, 근거이론을 기반으로 축 코딩 패러다임모형을 시행하였다. 패러다임모형은 인과적 조건, 맥락적 조건, 중심현상, 중재적 조건, 전략, 결과로 구성된다. [연구결과] 로보어드바이저 사용자는 로보어드바이저의 특수성(객관성, 수익성, 다양성, 편의성, 전문성)에 대한 인식을 통해 로보어드바이저를 사용하게 되며, 사용에 이르는 구조적 상황은 시장 변동성, 저금리, 전통 금융권에 대한 불신 및 로보어드바이저 정보의 접근성, 투자대안부재인 것으로 나타났다. 로보어드바이저 업체 및 기술에 대한 인식, 사용자 자신감이 로보어드바이저 사용전략을 촉진하거나 억제하는 조건으로 도출되었으며, 전략으로는 상업적 정보원천 및 사용자 주도적 정보원천을 활용하는 것으로 나타났다. 이후 로보어드바이저 유지, 해지, 정보제공 및 추천과 같은 사용 후 행동과 산업 성장에 대한 기대감 형성이 결과로 나타났다. [연구의 시사점] 본 연구의 학문적 의의는 로보어드바이저 사용자의 인지적 및 행동적 측면을 고려한 탐색적 연구로서 사용의사결정모형을 도출하고자 한 데 있다. 실무적으로는 로보어드바이저와 상호작용하는 사용자의 관점에서 로보어드바이저 사용의사결정의 맥락을 파악함으로 로보어드바이저에 대한 인식을 제고하고, 도출된 요인들을 통해 사용자 친화적 서비스로 개선하는데 실질적인 시사점을 제공한다. [Purpose] Robo-advisor is an automated investment management using algorithms that provides financial investment advice or investment management online. It became more popular with low interest rate and advances in artificial intelligence technology. This study explores the decision making process of robo-advisor users in Korea. [Methodology] We interviewed 15 robo-advisor users, and analyzed the text using NVivo Release 1 software. Based on paradigm analysis of the axial coding, we identified causal conditions, contextual conditions, central phenomenon, intervention conditions, strategies and consequence in robo-advisor users’ decision making process. [Findings] Our results show robo-advisor users started using robo-advisor services because of the specific features of robo-advisor such as objectivity, profitability, diversity, convenience, and expertise. Contextual conditions are identified as market volatility, low interest rate, distrust of traditional investment institutions, access to information on robo-advisors, and lack of investment alternatives. User’s strategy includes searching for commercial and user-driven information. Consequences include maintaining or terminating robo-advisor subscription, providing information or recommending robo-advisor to others. Based on these, a model of robo-advisor users’ decision making process was constructed. [Implications] Our results provide implications to the robo-advisor service providers with information on robo-advisor users decision making process. With our results, robo-advisor service providers can improve their services more user-friendly, and focus on gaining trust by users. Regulators need to consider more on user-protection while regulating robo-advisor industry.

요트 인테리어 디자인의 고급화 방안에 관한 연구 : 100 ft급 메가 요트를 중심으로

김아름 ( A Reum Kim ),이찬 ( Chan Lee ) 한국기초조형학회 2010 기초조형학연구 Vol.11 No.1

시판되는 에너지음료의 법랑질 침식효과에 대한 연구

정문진 ( Moon Jin Jeong ),정순정 ( Soon Jeong Jeong ),손정희 ( Jung Hui Son ),정성균 ( Sung Kyun Chung ),김아름 ( A Reum Kim ),강은주 ( Eun Ju Kang ),김은주 ( Eun Ju Kim ),김혜인 ( Hye In Kim ),장고은 ( Ko Eun Jang ),조민희 ( Min 한국치위생과학회 2014 치위생과학회지 Vol.14 No.4

To find out the effect of commercially available energy drinks on tooth enamel erosion, analyzed pH, buffering capacity, and the content of some of the inorganic components selecting 4 energy drinks that has high affinity of the products currently being sold. In addition, by observing the degree of erosion before and after immersion in energy drink by surface microhardness and scanning electron microscope (SEM) the results were as follows: Acidity of energy drink ?Burn Intense? was the lowest as 2.78±0.01 highest on distilled water as 6.475±0.01. ?Burn Intense? buffering capacity was 3.48±0.155 at pH 5.5, 1.88±0.15 at pH 7.0 which is the highest, and ?Hot6? was 1.71±0.37, 1.23±0.35 on each of it showing the lowest points. Ca content on energy drink was the highest at ?Volt Energy? as (77.21±2.70 mg/kg), the lowest at ?Hot6? as (0.98±0.05 mg/kg). P content was the highest on ?Hot6?(1.34±0.05 mg/kg) and detected at ?Red Bull?. Enamel surface hardness variation of the energy drinks before and after immersion showed rapid decrease at ?Red Bull? (66.65±35.60), and ?Volt Energy? (61.96±31.42), ?Burn Intense? (58.53±24.84), ?Hot6? (53.99±60.26) was in order. Distilled water, the control group, showed significant difference with the experimental group (p<0.05). But there was no significant difference between energy drinks. At SEM observation and analysis, ?Burn Intense? was the most severe demineralization, ?Volt Energy?, ?Hot6?, ?Red Bull?, distilled water was in order. In the above results, taken together there were no statistically differences between energy drinks but significant difference in comparison with distilled water. In addition, at SEM observation and analysis all energy drink caused dental erosion, especially ?Burn Intense?, has the lowest acidity, was serious. Thus, it is believed to provide a variety of oral health education and information about energy drinks that can affect the erosion of the teeth so public have the right to be recognized and reasonable dental care.