도시녹지 유형에 따른 휘발성유기화합물 농도 특성

조예슬(Yeseul Jo),박수진(Sujin Park),노관평(Gwan Pyeong Roh) 한국환경보건학회 2018 한국환경보건학회지 Vol.44 No.4

Objectives: The occurrence characteristics of BTEXS and phytoncides were investigated by type of urban forest. Methods: Four types of urban green space (Hongneung Forest, Mt. Chunjang, residential park, and traffic island) and Gwangneung Forest were selected. Monitoring of phytoncides and BTEXS was conducted considering the activity times of urban residents (five times per day) using a Tenax TA tube and suction pump in June 2017 (one day). Results: Phytoncide concentrations were ranked as Gwangneung Forest>Hongneung Forest>Mt. Cheonjang> traffic island>residential park. Relatively high concentrations of phytoncides were also identified in the urban forest. There was no significant difference between Gwangneung Forest and the urban forest. BTEXS concentrations were ranked as traffic island>residential park>Hongneung Forest>Gwangneung Forest>Mt. Cheonjang. Traffic island and residential park showed high levels of BTEXS depending on the inflow of vehicles. The difference in concentration by time was significant for the traffic island in particular. Pollutant levels in Hongneung Forest were as low as in Gwangneung Forest. Conclusion: The concentrations of phytoncides and BTEXS were different by types of urban green space, and the potential for health and hygiene of urban forests were able to be investigated. This study is expected to provide as basic data for the creation of urban forest spaces in the future.

기자칼럼-의료법 유감

박수진,Park, Su-Jin 대한병원협회 2007 대한병원협회지 Vol.36 No.2

제올라이트/DGEBA 복합재료의 경화 동력학과 기계적 계면특성

박수진,김영미,신재섭,Soo-Jin Park,Young-Mi Kim,Jae-Sup Shin 대한화학회 2003 대한화학회지 Vol.47 No.5

In this work, the zeolite/diglycidylether of bisphenol A(DGEBA) systems were investigated in terms of the cure kinetics and mechanical interfacial properties of the composites. The 4, 4-diamino diphenyl methane(DDM) was used as a curing agent for epoxy. Two types of zeolite(PZ) were prepared with 15 and 35 wt% KOH treatments(15-BZ and 35-BZ, respectively) for 24 h, and their surface characteristics were studied by X-ray photoelectron spectroscopy (XPS) and X-ray diffraction(XRD). Cure kinetics of the composites were examined in the context of differential scanning calorimetry(DSC), and mechanical interfacial properties were investigated in critical stress intensity factor($K_{IC}$) and critical strain energy release rate($G_{IC}$). In the results of XPS and XRD, sodium ion(Na) of zeolite was exchanged for potassium ion(K), resulting from the treatment of KOH. Also, $Si_{2p}/Al{2p}$ composition ratios of the treated zeolite were increased, which could be attributed to the weakening of Al-O bond in framework. Cure activation energy($E_a$) of 15-BZ composites was decreased, whereas KIC and $G_{IC}$ were increased, compared with those of the pure zeolite/DGEBA composites. It was probably accounted that the acidity of zeolite was increased by surface treatments and the cure reaction between zeolite and epoxy was influenced on the increased acidity of zeolite. 본 연구에서는 표면처리된 제올라이트에 따른 제올라이트/DGEBA의 경화 동력학과 기계적 계면특성을 고찰하였다. 경화제는 4, 4''-diamino diphenyl methane(DDM)을 사용하였으며, 제올라이트는(PZ) 15와 35 wt% KOH (15-BZ 그리고 35-BZ)로 표면처리하여 XPS와 XRD로 분석하였다. 경화 동력학은 DSC로 분석하였으며, 시편의 기계적 계면특성은 임계응력 세기인자(critical stress intensity factor, $K_{IC}$)와 임계변형에너지 방출속도(critical strain energy release rate, GIC)를 통하여 알아보았다. XPS와 XRD의 결과로부터, KOH로 표면처리된 제올라이트는 나트륨 (Na)이 칼륨(K)으로 이온교환되었으며, 표면처리로 인한 Al-O의 결합세기의 약화로 $Si_{2p}/Al{2p}$의 값이 증가하였다. 동적 DSC와 기계적 계면특성 결과로부터, 제올라이트/DGEBA 중에서 15-BZ의 경화 활성화에너지($E_a$)는 감소하였으며, $K_{IC}$와 $G_{IC}$는 증가하였다. 이러한 결과들은 제올라이트의 표면처리에 의해 산성도가 증가하였으며, 이렇게 증가된 산성도가 제올라이트와 에폭시 사이의 경화반응에 영향을 준 것으로 관찰된다.

정서 상태와 얼굴표정간의 연결 능력의 발달

박수진,송인혜,김혜리,조경자,Park, Soo-Jin,Song, In-Hae,Ghim, Hei-Rhee,Cho, Kyung-Ja 한국감성과학회 2007 감성과학 Vol.10 No.1

본 연구에서는 얼굴표정을 통하여 다른 사람의 정서 상태를 판단하는 능력이 연령(3세, 5세, 대학생), 성별(남, 여), 얼굴제시영역(얼굴전체, 눈), 정서의 종류(기본정서, 복합정서)에 따라 어떻게 다른지 알아보고자 하였다. 본 연구에서는 얼굴표정과 정서어휘 간의 연결이 비교적 분명하게 나타나는 32개의 정서 상태를 자극으로 사용하였으며, 표정사진은 32개의 정서 상태에 해당하는 얼굴표정을 배우에게 연기하도록 하여 사용하였다. 과제는 각 실험참가자에게 정서유발 상황에 대한 이야기를 들려주고 이야기 속의 주인공이 어떤 얼굴표정을 할 것인지를 판단하게 한 후 네 개의 얼굴표정 중에 적절한 것을 선택하도록 한 것이었다. 그 결과 연령이 증가함에 따라 얼굴표정을 판단하는 능력이 증가하였으며, 눈만 제시한 경우보다는 얼굴전체를 제시하였을 때, 복합정서보다는 기본정서에서 더 좋은 수행을 보였다. 또한 여자는 제시영역에 따른 수행의 차이가 없는 것에 반해, 남자는 눈 조건에 비해 얼굴조건의 경우에 더 좋은 수행을 보였다. 본 연구의 결과는 연령, 얼굴제시영역, 정서의 종류가 얼굴표정을 통해 타인의 정서를 판단하는데 영향을 줌을 시사한다. The present study investigated whether the emotional states reading ability through facial expression changes by age(3-, 5-year-old and university student groups), sex(male, female), facial expression's presenting areas(face, eyes) and the type of emotions(basic emotions, complex emotions). 32 types of emotional state's facial expressions which are linked relatively strong with the emotional vocabularies were used as stimuli. Stimuli were collected by taking photographs of professional actors facial expression performance. Each individuals were presented with stories which set off certain emotions, and then were asked to choose a facial expression that the principal character would have made for the occasion presented in stories. The result showed that the ability of facial expression reading improves as the age get higher. Also, they performed better with the condition of face than eyes, and basic emotions than complex emotions. While female doesn't show any performance difference with the presenting areas, male shows better performance in case of facial condition compared with eye condition. The results demonstrate that age, facial expression's presenting areas and the type of emotions effect on estimation of other people's emotion through facial expressions.

양이온 개시제 함량이 2관능성 에폭시 수지의 Electron-beam 경화에 미치는 효과

박수진,허건영,이재락,서동학,Soo-Jin Park,Gun-Young Heo,Jae-Rock Lee,Dong Hack Suh 대한화학회 2003 대한화학회지 Vol.47 No.3

본 연구에서는 이관능성 에폭시 수지의 전자선 (EB) 경화에 양이온 개시제 함량이 미치는 영향을 근적외선 분광기 (NIRS), 열중량 분석기 (TGA), 그리고 임계응력 인자 (KIC)를 사용하여 고찰하였다. 개시제로서 benzyl- quinoxalinium hexafluoroantimonate (BQH)을 사용하였으며, 함량은 0.5, 1, 2, 그리고 3 phr로 변화시켰다. NIRS 측정에 의해 BQH의 함량이 증가할수록 EB 경화된 에폭시 수지의 수산화기가 증가하는 것을 알 수 있었으며, 열안정성과 $K_{IC}$는 BQH 함량이 증가할수록 증가하다가 함량이 2 phr을 넘으면 감소함을 확인하였다. 이러한 결과들은 에폭시 수지의 경화반응 전환율과 경화도의 감소로 설명될 수 있었다. 다시 말하면, BQH의 함량이 2 phr 이상이 되면 에폭시 수지의 경화반응 전환율과 경화도가 높은 반응성에 기인한 불완전한 네트워크 구조로 인해서 제한되기 때문에 열안정성과 $K_{IC}$가 낮아진다고 생각된다. In this work, the effect of cationic initiator content on the electron-beam (EB) curing process of diglycidylether of bisphenol-A (DGEBA) resin was studied using near-infrared spectroscopy (NIRS), thermogravimetric analysis (TGA), and critical stress intensity factor $(K_{IC})$. Benzylquinoxalinium hexafluoroantimonate (BQH) were used as an initiator and its content was varied from 0.5 to 3 phr. NIRS measurements showed that the hydroxyl group of EB-cured epoxy resin was increased with increasing the BQH content. Thermal stability and $K_{IC}$ value of EB-cured epoxy resin were increased with increasing the BQH content but were decreased above 2 phr content. These results could be attributed to the decrease of the conversion and degree of crosslinking. In another word, the conversion and degree of crosslinking were restricted by the incomplete network structure from high reactivity at the BQH content above 2 phr, resulting in decreasings of thermal stability and $K_{IC}$.

산소-불소 처리된 탄소섬유가 에폭시 매트릭스 복합재료의 기계적 계면특성과 크랙저항 특성에 미치는 영향

박수진,오진석,서민강,한미정,김학용,Park Soo-Jin,Oh Jin-Seok,Seo Min-Kang,Han Mijeong,Kim Hak-Yong 한국섬유공학회 2005 한국섬유공학회지 Vol.42 No.3

In this work, the effect of oxy-fluorination on surface characteristics of carbon fibers was investigated in terms of fracture toughness and crack resistance properties of the epoxy matrix composites. The surface properties of the carbon fibers were determined by acid-base values, X-ray photoelectron spectroscopy (XPS), and FT-IR measurements. And their fracture toughness of the composites were evaluated by the interlaminar shear strength (ILSS) and critical stress intensity factor $(K_{lc})$. Crack resistance of the composites was investigated using two types of testing methods, namely critical energy release rate mode I $(G_{lc})$ and mode II $(G_{llc}).\;O_{ls}/C_{ls}\;and\;(O_{ls}+F_{ls})/C_{ls}$ ratio from XPS were increased by oxy-fluorination, due to the oxygen containing functional groups and the formation of $C-F_{x}$ bonds on the carbon fiber surface. It was found that the fracture toughness and crack resistance of the composites had been improved by the oxy-fluorination, which could probably be attributed to the increase in the degree of adhesion at interfaces between the carbon fibers and epoxy resin matrix in the present composite system.

화제의 컨설턴트 소개-차상란 가람감정평가법인 이사

박수진,Park, Su-Jin 한국경영기술컨설턴트협회 2004 컨설턴트 Vol.21 No.-

한국경제신문에서 매주 1회 발행하는 비즈니스 전문지“한경비지니스”에서는 2004년 9월 20일자(제459호) “피플:프로의 세계”코너를 통해 차상란 경영지도사 프로필을 특집으로 소개했다.차상란 지도사는 본회 대외협력분과위원과 APEC CBC 평가위원으로 활동하면서 여성지도사회 부회장과 개인지도사 사무소“아트경영자문”도 운영하고 있다. 한경비지니스 459호에 게재된 차상란지도사 특집기사 전문은 다음과 같다.

민간투자사업 활성화를 위한 제언

박수진,Park, Su-Jin 한국건설관리학회 2019 한국건설관리학회 논문집 Vol.20 No.4

소양호 유역의 오염총량관리를 위한 유달율 산정

박수진,최한규,한양수,Park. Soo Jin,Choi. Han Kuy,Han. Yang Soo 한국방재학회 2012 한국방재학회논문집 Vol.12 No.2

본 논문은 북한강 상류의 최대 다목적댐인 소양호 유역을 대상으로 오염물질 항목에 대한 배수구역의 유달율을 산정하여 오염부하량의 유달특성을 관찰하고자 하였다. 유황변화에 따른 오염부하량의 유달특성을 관찰한 결과 BOD와 SS, T-P의 경우 인북천 유역에서 높은 유달율을 보였으며, T-N의 경우 점오염원이 차지하는 비율이 큰 내린천과 북천, 합강시가지 유역에서 높은 유달율을 보였다. 전체적으로 풍수량과 고수량 기간에서 높은 유달율을 보였으며, 소양호의 경우 지류하천에 비해 풍수량 이하에서 완만한 유달곡선을 보이고 있어 기저유출기간에도 오염물질이 지속적으로 유출되는 것으로 관찰되었다. 다음으로 유출량에 따른 유달율포락곡선을 작성할 수 있었으며, 이를 이용하여 유역내 총량관리 목표수질설정 및 오염부하량 할당 결정이 가능할 것이다. The study aimed at observing the delivery characteristics of pollutant loadings by calculating the delivery rate of drainage areas on the pollutant item in the basin of Soyangho that is the biggest multipurpose dam in the upper region of the Bukhan River. According to the result of the observation on the delivery characteristics of pollutant loadings depending on the flow regime change, the delivery rate increases in BOD, SS and T-P. In case of T-N, the delivery rate increases in Naerincheon, Bukcheon and around Hapgang city where there are many point pollutant sources. The delivery rate generally increases during the period of ninety-five day flow and high water flow. In case of Soyangho, the delivery curve shows a gentle slope when lower ninety-five day flow compare to tributary channels, which indicated the continuous discharge of pollutants during the period of base flow. In addition, the delivery rate duration curve depending on the amount of discharge was recorded, which can be utilized to establish TMDL management`s objective of water quality and to decide.

비소오염토양에서 반복적인 Redox 환경 변화가 토양 미생물 군집과 비소 및 철의 순환에 미치는 영향

박수진,김상현,정현용,장선우,문희선,남경필,Park, Sujin,Kim, Sanghyun,Chung, Hyeonyong,Chang, Sun Woo,Moon, Heesun,Nam, Kyoungphile 한국지하수토양환경학회 2020 지하수토양환경 Vol.25 No.1

In a redox transition zone, geochemical reactions are facilitated by active bacteria that mediate reactions involving electrons, and arsenic (As) and iron (Fe) cycles are the major electron transfer reactions occurring at such a site. In this study, the effect of repetitive redox changes on soil bacterial community in As-contaminated soil was investigated. The results revealed that bacterial community changed actively in response to redox changes, and bacterial diversity gradually decreased as the cycle repeated. Proportion of strict aerobes and anaerobes decreased, while microaerophilic species such as Azospirillum oryzae group became the predominant species, accounting for 72.7% of the total counts after four weeks of incubation. Bacterial species capable of reducing Fe or As (e.g., Clostridium, Desulfitobacterium) belonging to diverse phylogenetic groups were detected. Indices representing richness (i.e., Chao 1) and phylogenetic diversity decreased from 1,868 and 1,926 to 848 and 1,121, respectively. Principle component analysis suggests that repetitive redox fluctuation, rather than oxic or anoxic status itself, is an important factor in determining the change of soil bacterial community, which in turn affects the cycling of As and Fe in redox transition zones.