폐글리세롤을 이용한 친환경 가소제의 경구투여독성 및 피부자극성 시험

강수정 ( Soo Jung Kang ),김희영 ( Hee Young Kim ),박상원 ( Sang Won Park ),심은영 ( Eun Young Sim ),김진환 ( Jin Hwan Kim ) 한국산업보건학회 2015 한국산업보건학회지 Vol.25 No.3

Objectives: The major objective of this study is the oral dose toxicity test and skin irritation test of eco-friendly plasticizer using crude glycerol derived from the biodiesel process. Methods: Glyceroldiacetate laurate(GDL) was synthesized from glycerol monolaurat(GML) and acetic acid. The synthesis of the GDL plasticizer was measured with nuclear magnetic resonance spectroscop(NMR) and FT-IR(Fourier Transform Infrared Spectrometer). To provide information on the safety of GDL, we carried out an oral dose toxicity test for GDL in Sprague-Dawley rats. Also, we carried out a skin irritation test for GDL in New Zealand White rabbits. Results: The oral dose toxicity test in Sprague-Dawley rats showed that GDL is a non-toxic material. The result of the skin irritation test on New Zealand White rabbits showed that GDL is non-irritating. Conclusions: From the results of oral dose toxicity test and skin irritation test, we concluded that the developed plasticizer showed excellent eco-friendly property. Based on our results, we confirmed the development of an eco-friendly non-phthalate plasticizer. Applicability for PVC toys and food and drug packaging materials was found.

전기영동관리에 따른 건 · 지성피부의 유 · 수분도 및 탄력도 변화에 관한 연구

강수정(Soo Jung Kang),오윤경(Yun Kyoung Oh),문덕환(Deog Hwan Moon) 한국인체미용예술학회 2015 한국인체미용예술학회지 Vol.16 No.2

This study was performed to observe the effects of maintenance and the improvement of moisture, sebum and elasticity levels among women's facial skin with the use of Vitaliont. The author compared the improvement of effects using the negative pole and positive pole of the Vitaliont among 15 individual subjects by facial skin type. During the test, the author measured the level of moisture, sebum and elasticity levels on the forehead, cheek and chin of their face and jaw pre- and post- skin care of the study subjects. As a result, the mean levels of moisture between pre- and post- skin care using Vitaliont increased significantly (P

Itaconic acid로 그라프트 공중합한 Chitosan의 beads를 이용한 수계 우라늄의 제거

강수정(Soo-Jung Kang),김남기(Nam-Ki Kim),김재우(Jae-Woo Kim),한상문(Sang-Mun Han) 대한환경위생공학회 2005 대한환경위생공학회지 Vol.20 No.2

The World Health Organization(WHO, 1998) and the United States Environmental Protection Agency (USEPA, 1992) recommended 2 ㎍ uranium/ℓ in drinking water as a guideline. The Korea Institute for Environmental Research recently reported that the radioactive pollution in ground water was almost negligible in Korea(1999~2002).<br/> Cs were cast into beads(2 ㎜ in wet form) and treated with hexamethylene diisocyanate for stability in acidic aqueous solution through cross-linking of the beads surfaces.<br/> The removal study was carried out in a static batch system and a flow system. In the static system, a certain amount of sample water was confined in a vessel and beads(dry weight 0.5 g) were packed into it in order to adsorb uranium for a certain period of time. Afterwards the remaining uranium in water vessel was determined by inductively coupled plasma mass spectrometry.<br/> The effective pH range was 4 to 8. The smaller the size of beads, the better the removal efficiency. Furthemore, the lower the flow rates, the higher the removal efficiency.<br/> The results showed that chitosan beads can be effectively used for the removal of uranium contained in water.

Dicarboxylic acid로 그라프트 공중합한 chitosan에 의한 우라늄 제거

강수정 ( Soo Jung Kang ),이재영 ( Jae Young Lee ),이희경 ( Hee Kyung Lee ),김재연 ( Jae Youn Kim ),김철경 ( Chyul Kyung Kim ),고창웅 ( Chang Woong Koh ),김용범 ( Yong Beom Kim ),김남기 ( Nam Ki Kim ) 한국화학공학회 2007 화학공학의이론과응용 Vol.10 No.1

바이오디젤부산물인 폐글리세롤을 이용한 친환경 가소제의 개발

강수정 ( Soo Jung Kang ),배성재 ( Sung Jae Bae ),진대언 ( Dae Eon Jin ),김진환 ( Jin Hwan Kim ) 한국산업보건학회 2014 한국산업보건학회지 Vol.24 No.3

Objectives: The major objective is development of an eco-friendly non-phthalate plasticizer using crude glycol derived from the biodiesel process. Methods: Glycerol monolaurate(GML) was synthesized from glycol and triglyrcerides. Glycerol diacetomonolaurate(GDAL) was synthesized from GML and acetic acid. Results: The synthesis of the GDAL plasticizer was measured with nuclear magnetic resonance spectroscopy (NMR). Mechanical properties were measured by universal testing machine (UTM) and the experimental values were compared with phthalate plasticizers such as dioctyl phthalate (DOP). In particular, the values for tensile strength and elongations with GDAL were higher than with DOP. Conclusions: We confirmed the development of an eco-friendly non-phthalate plasticizer by NMR. Based on our results, applicability for food and drug packaging materials was found.

소아 Anthracycline 심독성의 추적 관찰

권혁주,송영환,강수정,강형진,최형수,배은정,신희영,노정일,윤용수,안효섭,Kwon, Hyok Joo,Song, Young Hwan,Kang, Soo Jung,Kang, Hyoung Jin,Choi, Hyoung Soo,Bae, Eun Jung,Shin, Hee Young,Noh, Chung Il,Yun, Yong Soo,Ahn, Hyo Seop 대한소아청소년과학회 2003 Clinical and Experimental Pediatrics (CEP) Vol.46 No.3

Purpose : We studied the relationship between anthracycline cumulative dose and anthracycline cardiotoxicity in childhood cancer and followed up 40 children with anthracycline cardiotoxicity. Methods : A retrospective study was performed in 154 children who received anthracycline chemotherapy between January 1995 to December 2000. Cardiotoxicity was defined when the left ventricular fractional shortening(FS) was below 26%; it was divided into two groups, mild and severe cardiotoxicity, according to the FS. We followed up survivors with cardiotoxicity, and checked their present cardiac function by physical activity, echocardiography, electrocardiography(EKG) and chest X-ray. Results : Of the 154 children treated with anthracyclines, forty(26.0%) were diagnosed as cardiotoxicity. The incidence of cardiotoxicity increased in exponential fashion with increases in the cumulative dose of anthracyclines. There was minimal increase of incidence until a dose of $300mg/m^2$ after which the incidence increased rapidly. After mean $3.8{\pm}1.8year$ follow-up of 23 survivors with cardiotoxicity, FS increased significantly. EKG and chest X-rays were not helpful for the diagnosis of cardiotoxicity because of their low sensitivity and specificity. Conclusion : Although convenient, non-invasive and inexpensive, EKG and chest X-rays were not helpful for the follow-up of anthracycline cardiotoxicity. Almost all survivors with anthracycline cardiotoxicity have improved in both physical activity and echocardiographic findings after discontinuation of anthracyclines. 목 적 : 항암치료 중 anthracycline을 사용한 환아들에 대한 후향적 조사를 통해 anthracycline의 축적량과 anthracycline 심독성과의 관계를 알고자 했고 심독성 환아들에 대한 추적 조사를 통해 anthracycline 심독성 환아의 예후를 알고자 하였다. 방 법 : 1995년 1월부터 2000년 12월까지 서울대학교병원 소아과에서 anthracycline을 포함한 항암치료를 시작한 환아를 대상으로 과거 anthracycline 축적량과 심장 초음파 검사 소견, 심독성 발생 유무 등을 조사하였다. 심독성은 좌심실 수축분율이 26% 이하로 감소한 경우로 정하였고 이들을 다시 좌심실 수축분율이 20%가 넘는 경증 심독성과 20% 미만인 중증 심독성으로 분류하였다. Anthracycline 심독성이 발생한 환아들에게 운동 능력과 심장 초음파, 심전도 검사, 흉부 방사선 촬영 등의 추적 검사를 시행하였다. 결 과 : 총 조사대상 환아는 154명이었다. 이 중에서 40명(26.0%)의 anthracycline 심독성이 발생하였으며 경증 심독성이 27명(17.5%), 중증 심독성이 13명(8.4%)이었다. 심독성의 발생률은 anthracycline의 축적량이 증가함에 따라 서서히 증가하다가 축적량이 $300mg/m^2$ 이상부터 갑자기 지수적으로 증가하는 양상을 보였다. 심독성 환아 40명 중 12명이 추적조사 이전에 사망하였고 생존한 환아 중 23명에 대해 추적검사를 시행하였다. Anthracycline의 사용을 중단한 후 평균 $3.6{\pm}1.8$년의 추적검사 결과 심독성 환아들의 좌심실 수축분율은 유의하게 증가하였다(P<0.01). 흉부 방사선 촬영이나 심전도 검사는 심독성의 진단을 위해 민감도와 특이도가 매우 낮은 검사였다. 결 론 : 일반적으로 anthracycline 심독성 환아의 추적검사로 시행하는 심전도 검사나 흉부 방사선 촬영은 심독성의 추적 조사에 도움이 되지 않는다. 심독성 환아들은 일단 생존하여 항암치료를 마치고 약 2-5년 정도 경과하면 심부전 증상이나 심장초음파 검사상 대부분 호전을 보인다.

발달장애인의 지각-운동능력에 대한 요가프로그램의 효과

강수정 ( Su Jung Kang ),한윤수 ( Yoon Soo Han ),윤지운 ( Ji Wun Yoon ) 한국특수체육학회 2015 한국특수체육학회지 Vol.23 No.4

이 연구의 목적은 요가프로그램의 적용이 발달장애인의 지각-운동능력에 미치는 효과를 분석하여 특수체육프로그램의 기초자료로 활용하는데 있다. 이 연구의 목적을 달성하기 위하여 D광역시 S장애인 사회복지관의 주간보호센터를 이용하는 성인 발달장애인 16명을 유목적표집하여 실험집단8명, 통제집단8명을 선정하였다. 요가프로그램은 실험집단을 대상으로 주 2회(50분), 12주간 적용하였고 통제집단의 경우 신체활동을 모두 제한하였다. 지각-운동능력의 측정은 지각-운동능력 검사도구(Perceptual and MotorAbility: PaMA- Test)를 활용하였으며 실험, 통제집단 모두 사전, 사후 동일한 방법으로 실시하였다. 자료분석은 SPSS 18.0을 이용하였으며 각 변인별 평균(M)과 표준편차(SD)를 산출하고 Wilcoxon의 부호 순위 검정을 실시하였다. 이때 유의수준 α=.05로 설정하였다. 연구를 통해 얻은 결과는 다음과 같다. 첫째,요가 프로그램은 발달장애인의 지각-운동 능력을 향상시키는 것으로 나타났다(p<.05). 둘째, 요가프로그램의 실험처치 후 발달장애학생의 지각-운동능력은 실험집단과 통제집단 간 통계적으로 유의한 차이를 나타냈다(p<.05). 이 연구의 결과를 종합하여 볼 때, 요가프로그램은 발달장애인들의 지각-운동 능력 발달에 긍정적인 효과를 나타낼 수 있다는 결론을 얻었다. The purpose of this study was to find out the influence of applied yoga programs on Developmental Disabled. Participants of this study included 16 adults (yoga program group=8, control group=8) the participating in a day-care center. The yoga program group participated in yoga program which was composed of 50 minutes interval at twice a week for 12 weeks. To analyze the significant difference between the groups, the Wilcoxon’s signed-ranks tests were applied. SPSS 18.0 version was used. All alpha levels was .05. The results of the study are as follows. First, the yoga program group significantly improved perceptual motor abilities in people with developmental disabilities. Second, yoga program group had statistically significant improvements in the perceptual motor abilities when compared with the control group. Therefore, the yoga program had positive effects in the perceptual motor abilities of people with developmental disabilities

지적장애학생 직무개발과 배치업무를 담당한 교사 경험연구

한정우(Han jung-woo),강수정(Kang soo-jung) 한국장애인평생교육복지학회 2019 장애인평생교육복지연구 Vol.5 No.2

본 연구는 통합형 직업교육 거점학교에서 지적장애학생의 직무개발 및 배치업무를 담당하는 교사들의 인식과 경험을 알아보고 장애학생의 직무개발과 취업을 위한 효율적인 방안을 탐색하는 데 연구의 목적이 있다. 이를 위하여 경기도 내 통합형 직업교육 거점학교에서 직무개발 및 배치업무를 담당한 특수교사 5인을 대상으로 지적장애학생의 직무개발과 배치업무에서의 교사의 인식과 어려움을 알아보고 효율적인 개선방안 도출을 위해 질적연구를 실시하였다. 이에 연구결과는 다음과 같다. 첫째, 지적장애학생의 직무개발 및 배치업무에 대한 교사의 인식은 직무개발 및 배치 전담 인력 현황, 직무개발 및 배치과정에서의 고용주의 요구, 취업 의뢰 시 준비과정, 직업유지 기간, 직업유지를 위한 적합직종, 주요 취업처 등으로 나타났다. 둘째, 교사가 겪는 어려움은 교육청 지원의 부족, 중증장애학생 지도의 어려움, 직업개발 담당자 부족, 교사업무 병행의 어려움, 취업지도의 한계 등으로 나타났다. 마지막으로 이를 통한 개선방안 제시로 다양한 직종개발, 공공서비스 지원확대, 사회인식 변화, 교사의 전문성 강화 등을 강조하였다. The purpose of this study investigated the teachers work consciousness and experience in job development and placement process of students with intellectual disabilities in the field of special education. The participants of this study were five special teachers who have experienced vocational development and placement process for students with intellectual disabilities in Gyeonggi Province. The data collection consisted of deep-interview and transcribed the contents. And data analysis consisted through coding, one of qualitative research. The result of this study was follows as. First, the experiences of teachers in the course of job development and placement process of students with intellectual disabilities appeared as the status of occupational development and placement personnel, needs of employer, preparation for employment, period of job maintenance, major workplace. Second, the difficulties which faced the teachers appeared as the lack of Education Office support, the difficulties of students with severe disabilities, insufficiency of job development staff, difficulty of teacher work paralleling, limitation of employment guidance. Conclusion, this study suggested development of various job types, expansion of public service support, change of social perception, reinforcement of teacher professionalism.

저소득층 여성 노인의 원예학습 참여 의미 탐색

정승진(Chung, Sung Jin),강수정(Kang, Soo Jung) 한국평생교육학회 2019 평생교육학연구 Vol.25 No.1

본 연구는 저소득층 여성 노인의 원예학습 참여 의미를 탐색하고자 하였다. 이에 경기도 00시 노인복지관 ‘화노애락(花老愛樂) 원예교실’에 참여한 저소득층 여성 노인을 대상으로 실시하였으며 그 결과는 다음과 같다. 첫째, 원예학습은 비문해 저소득층 여성 노인이 쉽게 배울 수 있다. 둘째, 녹색의 생명력을 가진 식물과의 교감은 긍정에너지를 불러일으킨다. 셋째, 원예활동의 즐거 움은 위로와 치유의 시간이 되었다. 넷째, 연구 참여자에게 원예활동은 사회와의 연결 도구로 활용되었다. 이러한 결과를 통해 저소득층 여성 노인은 끊임없이 배우고자 하는 요구가 있었으며 성공적인 노화를 위해 즐거움을 갖고 일상에서 쉽게 접할 수 있는 것을 찾고 있음을 알 수 있었 다. 그 중 원예학습은 그들에게 과거의 회상과 함께 일상생활에서의 친숙함을 가지고 교육수준과 상관없이 쉽게 참여할 수 있다. 원예학습은 자연을 매개로 한 자연 친화적 활동으로써 신체활동, 정서적 안정감, 여가 활용 등 저소득층 여성 노인에게 있어 평생교육 차원에서의 발전 가능성을 확인할 수 있었다. 자연의 일부인 생명체를 매개로 하여 학습자와의 역동적 교감을 이루게 함으 로써 성공적 노화를 위한 자신의 변화를 스스로 이끌 인생 설계 프로그램으로 적용될 수 있었다. The purpose of this study is to investigate the meaning of participating in horticulture among the low-income elderly females. The result of study conducted among elderly females from low income levels who participated in the ‘Gardening Class with Flower, Anger, Sorrow, and Pleasure (花老愛樂)’ shows that: First, gardening education is inscribed and can be easily learned by elderly women from low-income families. Second, sympathy with plants of a green vitality leads to a positive energy. Third, the pleasure of garden activity made for a time of comfort and healing. Fourth, the garden activity was used as a tool to connect with society. It indicates that elderly females from low-income levels have continuing need for learning and seeking something pleasurable in their daily life for successful ageing. Gardening class among others is what they can easily participate in regardless of education level and with familiarity in daily life while recalling the past. As an eco-friendly activity mediating nature, it has a potential to be developed as a lifelong education for elderly female from low-income levels including physical activity, emotional stability, and leisure activity. In addition, it can be applicable as a life-designing program to change them for successful ageing, based on dynnamic communications between the learner and the living things, the part of nature.

근전도 신호를 이용한 무릎 착용 로봇시스템

차경호(Kyung-Ho Cha),강수정(Soo Jung Kang),최영진(Youngjin Choi) 제어로봇시스템학회 2009 제어·로봇·시스템학회 논문지 Vol.15 No.3

This paper proposes a knee-wearable robot system for assisting the muscle power of human knee by processing EMG (Electromyogram) signals. Although there are many muscles affecting the knee joint motion, the rectus femoris and biceps femoris among them playa core role in the extension and flexion motion, respectively, of the knee joint. The proposed knee-wearable robot system consists of three parts; the sensor for measuring and processing EMG signals, controller for estimating and applying the required knee torque, and actuator for driving the knee-wearable mechanism. Ultimately, we suggest the motion control method for knee-wearable robot system by processing the EMG signals of corresponding two muscles in this paper. Also, we show the effectiveness of the proposed knee-wearable robot system through the experimental results.