드럼형 마찰대전장치를 이용한 혼합플라스틱의 정전선별

김도균,조희찬,전호석,Kim Do Kyun,Cho Hee Chan,Jeon Ho Seok 한국자원리싸이클링학회 2004 資源 리싸이클링 Vol.13 No.1

마찰대전을 이용한 정전분리는 서로 상이한 물질간의 마찰을 통해 서로 다른 극성으로 하전시켜 이를 전기장내에 통과시켜 분리하는 기술이며, 플라스틱과 같은 부도체입자들의 정전분리에 많이 사용된다. 본 연구에서는 연속식 드럼형 마찰대전장치를 개발하고 이를 폐건축 및 폐가전 플라스틱의분리에 적용시켰다 분리대상 플라스틱은 폐건축 자재의 경우 PE/PVC 혼합시료를 대상으로 하였으며, 폐가전의 경우 ABS/PS/PP의 혼합시료를 대상으로 하였다. 건축자재 혼합플라스틱 및 가전제품 혼합플라스틱 모두 드럼형 마찰대전장치를 이용할 경우 실험한 조건에서 무게기준으로 95%이상의 순도조건에서 95%이상의 회수율을 보였다. Triboelectrostatic separation process is a technology that different particles charged after contact and rubbing different materials are separated in a high electric field. This technology has an advantage in that it can be used for separating non-conducting materials such as plastics unlike other electrostatic separation processes. There are two objectives in this study. One is to develop an effective continuous tribo-electrostatic separation process. The other is to apply the developed device for the separation of mixed plastics. Results show that almost all tested plastics reaches over 95% in yield and grade after separation.

적혈구 침강속도에 대한 Westergren tube 각도, 온도 및 NaCl 농도가 미치는 영향

김도균,김영홍,유창준,Kim, Do-kyun,Kim, Young-hong,Yu, Chang-jun 대한수의학회 1996 大韓獸醫學會誌 Vol.36 No.1

Erythrocyte sedimentation rate is influenced by plasma protein, red cell itself and physiological conditions and it is clear that the measurement of erythrocyte sedimentation rate varies with technique and various environmental factors. The effect of temperature, angle of test tube, and osmobility with different percent of NaCl solution on erythrocyte sedimentation rate on sheep was determined by modified Westergren method. In sheep, as the angle of Westergren tube was decreased from $90^{\circ}$ to $45^{\circ}$, erythrocyte sedimentation rate was increased in both diluted plasma and NaCl solutions. As temperature was increased from $4^{\circ}C$ to $20^{\circ}C$ at $45^{\circ}$ angle. erythrocyte sedimentation rate was increased. In ruminants, this modified Westergren methods, erythrocyte 1 : plasma 9 instead of erythrocyte 4 : plasma 6(whole blood), enable them to have meanings as dog therefor, using this method, clinical can determine the erythrocyte sedimentation rate of ruminants for diagnosis. Because erythrocyte sedimentation rate was changed according to the angle of Westergren tube, temperature as erythrocyte diluted with NaCl, this study detected that the change of temperature, the angle of Westergren tube could change erythrocyte sedimentation rate by effecting red cell itself. The increase of osmobility owing to change of NaCl percent resulted in the decrease of rapid erythrocyte sedimentation rate. So this fact indicate that deformibility and the change of red cell volume have meaning in the change of erythrocyte sedimentation rate.

포화지방산계 LB 막의 수평방향에 대한 전기적 특성 비교

김도균,최용성,장정수,권영수 ( Do Kyun Kim,Yong Sung Choi,Jeong Soo Chang,Young Soo Kwon ) 한국전기전자재료학회 1997 한국전기전자재료학회 춘계학술대회논문집 Vol.1997 No.0

부착면 표면물질에 의한 성능 왜곡을 최소화한 이중 선로의 비대칭 다이폴 형태 태그 안테나 설계

김도균,추호성,Kim, Do-Kyun,Choo, Ho-Sung 한국전자파학회 2007 한국전자파학회논문지 Vol.18 No.4

본 논문에서는 부착될 물질이 가지는 전기적 특성에 의한 성능 변화가 적은 이중 선로의 비대칭 다이폴 형태 RFID 용도 태그 안테나(Asymmetric Dual-arm Dipole Antenna: ADDA)를 제안하였다. 제안된 태그 안테나는 상용 의료 폐기물 수거용 플라스틱 밀폐 용기(${\varepsilon}_r=1.7,\;tan\;{\delta}=0.002$)에 부착하여도 안테나의 동작 특성 변화가 적도록 설계되었다. 안테나의 세부적인 설계변수는 자유공간과 인식 대상 물체에 부착시 우수한 인식거리 성능을 나타내도록 Pareto 유전자 알고리즘을 사용하여 최적화하였다. 최적화 태그 안테나는 $100\;mm{\times}50\;mm$의 크기를 가지며, 3.7 %의 반사 손실 대역폭($S_{11}$< -10 dB)을 가지고 80 %의 복사효율을 나타내었다. 인식 거리 측정 결과, 자유공간에서 정면 방향(broadside) 5.3 m, 의료 폐기물 수거용 플라스틱 밀폐 용기에 부착시 최대 5.5 m의 인식거리 성능을 가지는 것을 확인하였다. In this paper we proposed the tag antenna with a low performance distortion from an attached surface material using the asymmetric dual-arm dipole antenna(ADDA) structure. The tag is designed to exhibit low performance changes when the tag is attached on a target object(the medical litter receptacle, ${\varepsilon}_r=1.7,\;tan\;{\delta}=0.002$). Detail design parameters for the proposed antenna are optimized to maintain a good readable range in free-space as well as on a target object. The size of the optimized antenna is $100\;mm{\times}50\;mm$. The antenna shows the matching bandwidth($S_{11}$< -10 dB) of 3.7 % and the radiation efficiency of 80 % at the operating frequency. Finally we confirmed the readable range of the tag antenna by measurement and it shows about 5.3 m in free space and 5.5 m on the target object.

탄산아파타이트로 된 인공골과 소뼈에서 유래한 무기질 골의 초기 골전도에 대한 연구

김도균,조태형,송윤미,판휘,이수연,진임건,김인숙,홍국선,황순정,Kim, Do-Kyun,Cho, Tae-Hyung,Song, Yun-Mi,Pan, Hui,Lee, Su-Yeon,Jin, Im-Geon,Kim, In-Sook,Hong, Kug-Sun,Hwang, Soon-Jung 대한악안면성형재건외과학회 2007 Maxillofacial Plastic Reconstructive Surgery Vol.29 No.6

Introduction: Although several types of calcium-phosphate coumpound have been frequently applied to osseous defects at maxillofacial area for many years, there is a controversy about its efficiency on bone conductivity comprared to xenograft bone substitute. Alloplastic carbonapatite has been introduced to improve disadvantages of hydroxyapatite and to mimic natural bone containing carbon elements. However, a preclinical study about its efficiency of osteoconductivity has not been reported. This study was performed to evaluate the early osteoconductive potential of synthetic carbonapatite with multiple pores relative to anorganic bovine xenograft. Materials and methods: Total 5 beagle dogs were used for maxillary augmentation model. The control (anorganic bovine xenograft) and experimental groups (synthetic carbonapatite) were randomly distributed in the mouth split design. After bone graft, all animals were sacrificed 4 weeks after surgery. Histological specimens with Masson Trichrome staining were made and histomorphometrically analysed with image analyser. The statistical analysis was performed using paired t-test. Results: In both groups, all animals had no complications. The experimental group showed relatively much new bone formation around and along the bone substitutes, whereas it was clearly reduced in the control group. The ratios of new bone area to total area, to material area and to the residual area excluding materials were higher in the experimental group ($0.13{\pm}0.03,\;0.40{\pm}0.13,\;0.20{\pm}0.06$ respectively) than in the control group ($0.01{\pm}0.01,\;0.03{\pm}0.02,\;0.03{\pm}0.03$, respectively). And the differences between both groups were statistically significant (p<0.001, <0.01, <0.01, respectively), while the ratio of material area to total area in two groups was not significant. Conclusion: Carbonapatite showed a high osteoconductivity in the early stage of bone healing compared to bovine derived anorganic bone substitute. This study suggests that this bone materials can be applied as a reliable bone substitute in the clinical treatment.

환경오염피해의 역학적 인정과정과 행위자들의 대응 : 익산장점마을 비료공장 사례를 중심으로

김도균(Do-Kyun Kim) 한국NGO학회 2021 NGO연구 Vol.16 No.2

장점마을(전북 익산시) 사례는 환경오염과 비특이성 질환인 암 사이의 역학적 관련성을 정부가 공식 인정한 국내 최초 사례라는 점에서 중요한 의미를 지닌다. 이 사례를 놓고 보면, 환경오염피해의 역학적 인정과정은 상호 대립하는 과학적 논쟁인 동시에 다양한 행위자들이 개입하는 정치사회적 과정이다. 고령화 수준이 높고 학력수준이 낮은 장점마을 피해주민들은 자신들의 피해를 과학적으로 설명할 수 있는 지식은 물론 피해를 공론화할 수 있는 사회정치적 자원 또한 부족하다. 즉 장점마을은 환경오염피해에 대한 공동체 내부의 복원력 수준이 매우 낮다. 공동체 내부의 낮은 복원력은 장점마을 민관협의체라는 거버넌스를 구축하면서 일정 부분 극복 할 수 있었다. 특히 민관협의체에 참여한 민간위원들은 피해주민들이 부족한 과학적 지식과 정치사회적 자원을 동원할 수 있는 연결망으로 활용되었다. 민관협의체 구축은 지방정부, 피해주민, 지역NGO 및 전문가들 사이의 협력 지향적 상호작용을 촉진했으며, 환경부의 주민건강영향조사의 해석과정에도 개입할 수 있는 인적 자원 및 과학적 지식, 정치사회적 영향력을 확보해 주었다. The case of Jangjeom Village (Iksan-si, Jeonbuk, Korea) has important meaning as it is the first case in Korea officially recognized by the government to display a mechanical relationship between environmental pollution and the non-specific disease of cancer. This case shows that the mechanical recognition process of environmental pollution damage is both a mutually confrontational scientific debate and a political and social process involving diverse agents. Damaged residents of the Jangjeom Village, with a high level of aging and low educational levels, lacked the knowledge to scientifically explain their damage as well as socio-political resources to publicize the damage. In other words, Jangjeom Village has a very low level of resilience within the community against environmental pollution damage. The low level of resilience within the community could be somewhat overcome as a governance called the public-private consultative body was established. In particular, civilian members who participated in the public-private consultative body were used as a network for mobilizing scientific knowledge along with political and social resources that the damaged residents lacked. The establishment of a public-private consultative body promoted cooperation-oriented interactions among local governments, damaged residents, and local NGOs and experts, and it secured human resources, scientific knowledge, and political and social influence to intervene in the Ministry of Environment s interpretation process of resident health impact surveys.

온라인 골프 쇼핑몰 속성이 소비자의 긍정적 감정 및 쇼핑행동에 미치는 영향

김도균(Do Kyun Kim),정지영(Ji Young Chung) 한국사회체육학회 2013 한국사회체육학회지 Vol.0 No.53

The purpose of this study was to provide basic data for marketing activity of the online golf shopping mall through analysis about the effect of online golf shopping mall attributes on positive emotion and online shopping. A total of 483 golfers(equipment for the golf: purchase of the golf club, shoes and ball etc) from 10 driving ranges in Seoul and Gyeonggido area was conveniently selected and responded to the survey questionnaire. As the statistical method for this research, the PASW 18.0 statistical programs were used to frequency analysis, exploratory factor analysis, reliability analysis, correlation relative analysis, simple regression analysis and multiple regression analysis on these data. Results of the analysis are as follows: First, online golf shopping mall attributes was found to have significant effects on order processing, price, promotion, safety, site design, and communication in positive emotion. Second, online golf shopping mall attributes was found to have significant effects on price, order processing, site design, promotion, product in revisiting of shopping behaviors. Third, online golf shopping mall attributes was found to have significant effects on communication, site design, price in recommendation of shopping behaviors. Fourth, online golf shopping mall positive emotion was found to have significant effects on revisiting and recommendation in shopping behavior.

환경오염피해의 사회모델 개발

김도균(Do Kyun Kim),이재혁(Jae Hyuck Lee),서은주(Eun Ju Seo) 한국환경사회학회 2021 환경사회학연구 ECO Vol.25 No.1

본 연구의 목적은 한국사회에 적합한 환경오염의 피해양상 및 복구과정을 분석할 수 있는 ‘환경오염피해의 사회모델’을 개발하는 데 있다. 환경오염피해의 사회모델을 제안하기 위해 사회영향평가, 피해의 사회구조론, 재난복원력, 기술재난 등에 관한 이론적 수준의 연구뿐 아니라 국내의 사회학, 인류학 분야에서 수행된 다양한 경험적 연구를 검토하고 분석했다. 그 결과 환경오염피해를 종합적으로 이해하기 위한 세 개의 경로(분석틀)와 경제영역, 사회영향, 건강영역, 생명영역으로 구성된 28개의 오염피해 평가변수, 복구과정에서의 주요 변수들을 제안했다. 또한 변수를 평가(조사)함에 있어 오염피해자의 입장이 잘 전달될 수 있는 조사방법을 활용할 것, 그리고 오염피해자의 의견을 존중하는 피해자 중심주의 관점에서 평가가 이루어져야 한다는 점을 강조했다. The research objective is to develop “a model of society with environmental pollution damage” that can be used for analyzing various types of damage caused by environmental pollution as well as the rehabilitation process. To suggest “a model of society with environmental pollution damage”, this study utilized various previous studies from the fields of sociology and anthropology, along with theoretical studies on social impact assessment, social structure of damage, disaster resilience, and technical disaster. As a result, we suggested 28 variables consists of three pathways to comprehensively understand the pollution damage resulting from an environmental pollution accident, economic area, social impact, and health and life area. And we also stressed that in evaluating(investigating) variables assessment should actively utilized by adopting the method that can convey the standpoint of the victims, and evaluation should be made from a victim-centered perspective that respects the opinions of the contaminated victims.

Health communication in South Korea : Past, present, and future

김도균(Do Kyun Kim),김용찬(Yong Chan Kim),이재섭(Jae sub Lee),이지수(Ji soo Lee),백혜진(Hye Jin Paek),소지연(Ji yeon So) 한국헬스커뮤니케이션학회 2016 헬스커뮤니케이션연구 Vol.14 No.-

최근 수년간 한국은 각종 국민보건을 위협하는 질병 및 현상들을 경험하고 있으며, 국민들 또한 질병예방과 국민보건 전반에 대한 관심이 지속적으로 높아지고 있다. 이에, 한국 정부는 국민보건 향상과 질병예방에 대응하는데 필요한 정보, 지식, 프로그램, 효과적인 시스템 등을 어느 때 보다 절실히 요하고 있는 실정이다. 실질적으로, 학계와 많은 단체들이 대중들의 일상생활에 맞춘 국민건강 향상에 필요한 활동들과 프로그램들을 정착 시키는데 노력하고 있다. 이 모든 사회 및 학계에서의 필요성과 노력들에 대응하여, 본 논문은 보다 나은 헬스커뮤니케이션의 미래와 이에 병행되는 국민보건 향상을 위한 중요한 사항들을 논의하고자 한다. As South Korea has experienced several serious public health outbreaks in recent years, public interest in and awareness of disease prevention and public health care has remarkably increased over time. Accordingly, it is demanded that the South Korean government acquires a sufficient level of knowledge, programs, skills, and systems to effectively respond to potential and immediate health threats and promote public health. Based on these needs and tasks, scholars in academia, not-for-profit organizations, health care industries have also made significant efforts to implement health communication into everyday lives of the public by organizing various health communication events and activities. Responding to the social demands and academic interests in health communication, this article points out and discusses some important topics to further develop health communication scholarship and praxis in South Korea.

칸트와 법치주의

김도균(Kim, Do-Kyun) 서울대학교 철학사상연구소 2007 철학사상 Vol.24 No.-