메조기공을 갖는 실리카 계열 담체를 사용한 프로판 산화적 탈수소 공정용 바나디아 담지촉매의 특징

안인영,윤지선,서동진,서영웅 한국공업화학회 2009 한국공업화학회 연구논문 초록집 Vol.2009 No.-

청소년의 고카페인 음료 섭취와 우울증상 및 자살의 관계

안인영,서지영,이동윤,이소진,차보석,김봉조,박철수,최재원,이철순,Ahn, In-Young,Seo, Ji-Yeong,Lee, Dongyun,Lee, So-Jin,Cha, Boseok,Kim, Bong-Jo,Park, Chul-Soo,Choi, Jae-Won,Lee, Cheol-Soon 한국정신신체의학회 2016 정신신체의학 Vol.24 No.2

연구목적 청소년의 고카페인 음료(에너지 드링크) 섭취가 급격히 증가하며 사회적인 이슈가 되고 있지만 정신과적인 영향에 대해서는 아직까지 자세히 밝혀지지 않았다. 본 연구에서는 청소년의 고카페인 음료 섭취와 우울증상, 자살생각, 자살계획 및 자살시도 간의 관계를 알아보고자 하였다. 방 법 2014년 수행된 제 10차 대한민국 청소년건강행태온라인 조사에서 자기기입식 설문을 통해 고카페인 음료섭취 유무 및 섭취 용량, 우울증상, 자살생각, 자살계획, 자살시도 경험을 평가하였다. 수집된 자료를 바탕으로 변인들의 관련성을 알아보기 위해 카이제곱 검정을 시행하였고, 우울증상과 자살생각, 자살계획, 자살시도의 위험요인을 파악하기 위해 나이, 성별, 학업성취도, 가족경제수준을 보정하여 다중 로지스틱 회귀분석을 실시하였다. 결 과 본 연구에서는 총 71,638명의 자료를 분석에 사용하였다. 최근 1주일 동안 고카페인 음료를 섭취한 적이 있는 청소년이 그렇지 않은 경우에 비해 우울증상(p<0.01), 자살생각(p<0.01), 자살계획(p<0.01), 자살시도(p<0.01) 경험이 통계적으로 유의하게 높았으며, 고카페인 음료 섭취 경험은 자살시도(O.R=1.99 ; 95% CI, 1.77-2.22)의 위험요인으로 나타났다. 청소년 카페인 일일 섭취권고량을 초과하는 고용량 섭취군이 저용량 섭취군에 비해 우울증상(p<0.01), 자살생각(p<0.01), 자살계획(p<0.01), 자살시도(p<0.01) 경험이 통계적으로 유의하게 높았으며, 고용량 카페인 섭취가 자살시도(O.R=4.05 ; 95% CI, 3.02-5.43)의 위험요인으로 확인되었다. 결 론 본 연구에서 청소년의 고카페인 음료 섭취는 우울증상, 자살생각, 자살계획, 자살시도 경험의 증가와 유의한 관련성이 있었으며, 일일섭취권고량을 초과하는 고용량 카페인 섭취는 자살 시도의 위험성을 높이는 요인임을 확인하였다. 본 연구의 결과는 고카페인 음료 섭취가 청소년의 심리적, 정신적 어려움과 관련될 수 있어 주의가 필요함을 강조한다. Objectives : Despite the increased popularity of highly caffeinated beverages, there is little research examining psychiatric adverse effects. The purpose of this study was to investigate the relationships among pattern of highly caffeinated beverage intake and depressive symptom, suicidal ideation, suicidal plan, suicidal attempt in Korean adolescents. Methods : The data was obtained from the 2014 Korean Youth's Risk Behavior Web-based Study by Korea Centers for Disease Control & Prevention. All participants conducted web-based questionnaire survey. Chisquare test and multiple logistic regression analysis were performed to determine the association among highly caffeinated beverage intake pattern, depressive symptom, suicidal ideation, suicidal plan and suicidal attempt adjusting for differences in age, gender, academic achievement, socioeconomic status. Results : A total of 71,638 participants were enrolled in this study. Depressive symptom, suicidal ideation, suicidal plan and suicidal attempt were significantly more frequent in the group with presence of highly caffeinated beverage intake within 1 week than in non-drinker group(p<0.01). Highly caffeinated beverage intake was significantly associated with suicidal attempt(OR=1.99 ; 95% CI, 1.77-2.22). In addition, depressive symptom, suicidal ideation, suicidal plan and suicidal attempt were significantly more common in the group with heavy-drinker who exceed recommended daily intake dose of caffeine than in the group with light-drinker(p<0.01). Heavy drinking of caffeinated beverage was significantly associated with suicidal attempt(OR=4.05 ; 95% CI, 3.02-5.43). Conclusions : We found that highly caffeinated beverage intake was related to more frequent depressive symptom, suicidal ideation, plan, attempt in adolescents. Also, caffeine intake which exceed recommended daily intake dose identified the predictor of suicidal attempt. Our result suggested that clinicians need to be aware of the possible psychiatric adverse effects of highly caffeinated beverage in vulnerable population including young adolescents.

소규모 파빌리온 표피의 자연 생성적 디자인 특성에 관한 연구

안인영,이재규 한국공간디자인학회 2012 한국공간디자인학회논문집 Vol.7 No.3

파빌리온이란 대형의 독립 지붕으로 덥힌 구조물을 일컬으며 그 구조 안에 독립적인 형태로 임시기간 동안 설치된 소형 구조물은 소규모 파빌리온이라고 한다. 먼저 산업혁명 이후부터 현대에 이르기까지의 파빌리온의 변천 과정과 상징적 의미들을 살펴본 결과 파빌리온들은 표현과 공간 활용의 자율성을 찾는 것으로 점차 바뀌어 왔음을 알게 되었다. 또한, 이러한 자율성을 기반으로 한 소규모 파빌리온의 특징을 분석한 결과 외부 표피로 구축된 내부구조의 생략이라는 또 다른 자율성의 공간 특징을 갖는 것이 발견되었고 이러한 자율성은 자연 생성적 디자인의 공간성과 상당히 관련이 있음을 알게 되었다. 소규모 파빌리온 공간에서 보여주는 쪽과 바라보는 쪽의 커뮤니케이션이 일차적으로 이루어지는 공간이 파빌리온의 표면이 된다. 그 표면을 이루는 표피를 전략적으로 극대화 시킬 디자인 방법 중 하나인 자연 생성적 디자인이 표피에 어떻게 재현 되었는지를 분석하고 이해하여 앞으로 있을 소규모 파빌리온 공간 구축에 적용 가능한 디자인방법을 제시하고자 한다. A Pavilion is a structure that is covered with a large independent roof, and a small structure temporarily installed in an independent form in the structure is called a small scale pavilion. After examining the changing process and symbolic meanings of pavilions from the Industrial Revolution to the present day, I found that pavilions have gradually changed to those that have autonomy in expression and utilization of space. In a sense of the autonomy, the results of the analysis on the characteristics of the small scale pavilions show another autonomy in utilization of space omitting the inner structure with an outer surface, and such autonomy is considerably relevant to the spatiality of the natural becoming design. The communication of showing side and looking side in small scale pavilions is primarily the surface of the pavilion. In this study, I attempt to suggest design methods applicable to the space construction of small scale pavilions by analyzing and understanding how the natural becoming design which can maximize the external surface strategically is revealed on the surface.

해양오염과 생태계 위기

안인영,An, In-Yeong 환경보전협회 1994 환경정보 Vol.16 No.10

우리나라 갯벌 조간대 바지락 Ruditapes philippinarum의 지역별 중금속 농축 변화

안인영,박현,지정연,최희선,최진우,표세홍 한국해양과학기술원 2006 Ocean and Polar Research Vol.28 No.3

Spatial variation of heavy metal accumulation was investigated in Manila clam Ruditapes philippinarum collected from several tidal flats. Sediment metal levels varied highly among the sites, which was attributed primarily to differences in Fe and organic carbon contents and in part to grain size. Significant differences in metal concentrations also were found in the clam tissue among the different sampling sites. However, except for a few metals (Mn, Zn, Pb), which showed some elevation, the variations in the clam tissue were not related to the variations in the sediment. This is likely because most metals in filter-feeding herbivores such as R. philippinarum accumulated as a result of feeding on suspended particles such as phytoplankton and organic detritus in the water column, not in bottom sediment. In addition, tissue weight for a specific shell size varied significantly among the sites, and increased tissue mass indicating a good nutritive condition likely caused a subsequent dilution of body metals leading to reduced weight-specific concentrations of some metals (Cd, Zn, Cu, Co).

밝혀지는 남극 해저생태계

안인영,An, In-Yeong 한국과학기술단체총연합회 2007 과학과 기술 Vol.40 No.1

Heavy Metal Pollution Monitoring at King Sejong Station, King George Island, Antarctica

안인영,Heeseon J. Choi,Ko-Woon Kim 한국해양과학기술원 2003 Ocean and Polar Research Vol.25 No.3s

The coastal environment of King George Island is potentially subject to contamination by pollutants arising from station operations, such as emissions from fossil fuel burning, oil spills, waste disposal, etc. As a preparatory step to assess such impacts on the marine environment and living organisms of this island, two molluscan species (the bivalve Laternula elliptica and the gastropod Nacella concinna) were selected as biomonitors for metal pollution monitoring, and their baseline levels have been investigated for the past several years at King Sejong Station. In this review, variability of the baseline levels is discussed in relation to body size, tissue type, and sex. Natural elevations of some metals are also discussed with respect to the environmental characteristics of this region.

스발바드군도 스피츠베르겐섬 콩스피요르드에 분포하는 갈조류의 중금속 농도

안인영,김지희,최희선,지정연,정호성 한국해양과학기술원 2004 Ocean and Polar Research Vol.26 No.2

Concentrations of Al, As, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Zn were determined in four arctic brown algae (Laminaria saccharina, L. digitata, Alaria esculenta, Desmarestia aculeata) in an attempt to examine for their metal accumulation capacity and also to assess their contamination levels. Macroalgae were collected from shallow subtidal waters (<20 m) of Kongsfjorden (Kings Bay) on Spitsbergen during the period of the late July to early August 2003. Metal concentrations highly varied between sampling sites, species and tissue parts. Input of melt-water laden with terrigenous sediment particles seemed to have a large influence on baseline accumulations of some metals (Al, Fe, Mn, Pb etc.) in the macroalgae, causing a significant spatial variation. There were also significant concentration differences between the young and old tissue parts in L. saccharina, L. digitata and A. esculenta. While Al, Fe, Mn, Pb were higher in the perennial parts below meristematic region (excluding holdfast), Cd and As concentrations were significantly higher in the young blades above the meristematic region. Zn and Cr, on the other hand, showed little differences between the tissue parts. The highest metal concentrations were found in D. aculeata, which seems to be due to its filamentous fine branches leading to high surface/volume ratios. The lowest concentrations were found in the two Laminaria spp., the blades of which are thicker than D. aculeata and A. esculenta. No distinct signs of contamination were detected in the brown algal species analyzed. Added to this, the results of the present studies suggest the potential utility of L. saccharina, L. digitata and A. esculenta as biomonitors for metal pollution monitoring in this area.

First Record of Massive Blooming of Benthic Diatoms and Their Association with Megabenthic Filter Feeders on the Shallow Seafloor of an Antarctic Fjord: Does Glacier Melting Fuel the Bloom?

안인영,문혜원,전미사,강성호 한국해양과학기술원 2016 Ocean science journal Vol.51 No.2

We report a conspicuous benthic diatom bloom on an Antarctic fjord shallow seafloor, which has not been reported elsewhere in Antarctica. A thick and massive growth of benthic diatoms was covering or being entangled with a variety of common benthic megafauna such as stalked ascidians, sponges, tubedwelling polychaetes, gastropods, bryozoans, and others. This finding is an outcome of recent investigations on benthic communities in Marian Cove, King George Island, where glacier retreat has been proceeding quickly for the past several decades. Dominance of benthic diatoms during the austral summer has been frequently reported in shallow Antarctic nearshore waters, which in turn indicates their potential as a primary food item for secondary producers living in this harsh environment. However, previous blooming records of the benthic diatoms were primarily based on data from water column samples. We are the first to report observational evidence of shallow seafloor substrates, including the massive blooming of benthic diatoms and their associations with common benthic megafauna in an Antarctic fjord.

남극큰띠조개 Laternula elliptica (이미패강 : 띠조개과 ) 의 생태 및 생물학적 특성

안인영 한국패류학회 1994 The Korean Journal of Malacology Vol.10 No.2

The Antarctic soft-shelled clam, Laternula elliptica is widely distributed in shallow waters around the Antarctic Continent and islands. This bivalve species occurs in densepatches particularly in sheltered but frequently ice-impacted areas. This species mostly occurs at atound 20-30 m depth and is rarely found at depths shallower than 5 m where ice abrasion by drifting or grounded icebergs is severe. It burrows deep into sedimint(frequently >50 cm), which seems to be primarily a means for avoiding ice impacts. A pair of stout and highly extendable siphons appear to be a morphological reature to feed in the ice-scoured substrates while staying deep in the sedimint. As one of the largest bivalves in the Antarctic waters, L. elliptica appears to grow rapidly, reaching to a shell length of approximately 100 mm in 12 or 13 years. L. elliptica feeds sctively during summer when food is sufficiently provided, implying that food may be the most inportant fator regulating the growth. Seasonal variations in food availability, and metabolic process in starvation condition possibly during winter, however, are yet to be further investigated.