회전형 저온 플라즈마 시스템을 이용한 분말식품의 균일한 살균 연구

김명찬,박덕모,한진수,우인봉,김동후,장성은,윤찬석,김인,Kim, Myung Chan,Park, Duck Mo,Han, Jin Soo,Woo, In Bong,Kim, Dong Hoo,Jang, Seong Eun,Yoon, Chan Suk,Kim, In 한국식품영양학회 2018 韓國食品營養學會誌 Vol.31 No.2

In this study, a relatively effective process is used to sterilize Escherichia coli on the surface of micro-sized calcium citrate powder using nitrogen and argon as process gases in a low-temperature vacuum plasma treatment. The purpose of this study is to confirm and to introduce the effectiveness of homogeneous surface treatment for the sterilization of fine inorganic powder by the rotatable low-temperature RF plasma system designed by ourselves. The results of the test using 3M petrifilm showed that there were no remarkable spots in the case of the surface of plasma treated powder, whereas the untreated powder showed many blue spots, which indicating that the E. coli was alive. After 5 days, in the same samples, the blue spots were seen to be larger and darker than before, while the plasma-treated powder showed no changes. The results from FE-SEM analysis showed that the E. coli was damaged and/or destroyed by reactive species generated in the plasma space, resulting in the E. coli being sterilized. Furthermore, the sterilization effects according to the selected parameters ($N_2$ and Ar; flow rate 30 and 50 sccm) adapted in this study were mutually similar, regardless of such different process parameters, and this indicates that homogeneous treatment of powder surfaces could be more effective than conventional methods. Therefore, the plasma apparatus used in this study may be a practical method to use in a powerful sterilization process in powder-type food.

휜이 달린 수소저항합금 베드의 수소저장 성능의 수치적 예측

김명찬,이상용,구재학,Kim, Myeong-Chan,Lee, Sang-Yong,Gu, Jae-Hak 대한기계학회 1998 大韓機械學會論文集B Vol.22 No.4

Heat and mass transfer behaviors of metal hydride beds were predicted by solving a set of volume-averaged equations numerically both for the gas (hydrogen) and the solid(metal hydride) phases. Time variations of temperature and hydrogen concentration ratio distributions were obtained for internally cooled, cylindrical-shaped beds with metal(aluminum) fins imbedded in them. Also, time variations of the space-averaged hydrogen concentration ratio were obtained. Temperature and velocity of the coolant, hydrogen pressure at the gas inlet, and the fin spacing were taken as the parameters. The hydrogen absorption rate increases with the higher velocity and the lower temperature of the coolant, and with the decrease of the fin spacing. Increasing of the hydrogen pressure at the gas inlet also promotes the rate of absorption though the increasing rate gradually slows down. The amount of the hydrogen storage per unit volume of the bed decreases with the tighter fin spacing despite of the higher absorption rate ; therefore, there should be an optimum fin spacing for a given volume of the system and the amount of the hydrogen storage, in which the absorption rate is the highest.

일반담배(Cigarette)와 금연 보조 담배(금연초, 허브담배, 쑥 담배)의 기관지 상피세포에서 IL-6유리 효과비교

김명찬 ( Myoung Chan Kim ),정재일 ( Je Il Jung ),정종훈 ( Jong Hoon Jung ),김학렬 ( Hak Ryul Kim ),양세훈 ( Sei Hoon Yang ),정은택 ( Eun Taik Jeong ),김휘정 ( Hui Jung Kim ) 대한결핵 및 호흡기학회 2005 Tuberculosis and Respiratory Diseases Vol.59 No.5

여성 알코올 중독자의 중독과 회복과정 경험에 대한 내러티브 탐구 : 사회적 낙인과 지지를 중심으로

김정숙(Kim Jungsuk),전아영(Jeon A yeong),김정희(Kim Junghee),김계순(Kim Gyesoon),김명찬(Kim Myeongchan),금창민(Keum Changmin) 한국열린교육학회 2021 열린교육연구 Vol.29 No.5

연구는 여성 알코올 중독자의 알코올 사용에 대한 통제력 상실을 경험한 중독과정과 알코올 중독자임을 인정하고 단주생활로 새로운 삶을 만들어 가는 회복과정의 경험을 세밀하게 연구하고자 하였다. 본 연구를 위해서는 Clandinin과 Connelly(2000)이 제안한 삼차원적 내러티브 연구방법과 절차에 의해 진행되었다. 참여자의 알코올 중독이전의 경험, 중독과정의 경험, 회복과정의 경험에서 사회적 낙인과 지지가 어떻게 관련되어 있는지가 연구의 퍼즐이었다. 이를 위해 2021년 4월에서 5월까지 부산·경남지역에 거주하는 회복과정에 있는 알코올 중독 경험 여성 4인에 대한 심층인터뷰를 실시하였다. 내러티브의 삼차원적 탐구 공간에서 공통경험은 중독이전 경험, 중독과정 경험, 회복과정 경험의 3단계로 나누어 분석하였다. 첫째, 시간성의 차원에서의 경험은‘억압받는 나’,‘자기 연민과 무력감’,‘자기인식과 자기사랑’ 으로 나타났다. 둘째, 상호작용 차원에서의 경험은‘돌봄 받지 못한 방임상태’,‘스스로 수치심을 느끼는 고립된 삶’,‘관계 회복을 위한 결단’ 이었다. 셋째, 상황 차원에서의 경험은‘알코올 중독 가정 내의 성장’,‘사회적 고립’,‘단주모임 참여’로 도출되었다. 넷째, 사회적 낙인과 사회적 지지의 변화 과정경험은‘알코올 중독자인 나’,‘서로에게 힘이 되어주는 멤버’의 외재적 부분과‘수치스럽고 초라한 나’에서‘스스로를 사랑하는 나’의 내재적 부분의 주제로 확인할 수 있었다. This study aims to describe detailed recovery experiences of female alcoholics who once lost control of drinking alcohol, then acknowledged their addictions, and have been carving out new lives sober. The researchers used the three-dimensional narrative methodology of Claninin and Connelly (2000). The inquiry puzzle discovered how social stigma and support affect the experiences of those who were in pre-addiction, addiction, and recovery processes. The researchers had in-depth interviews with four recovered female alcoholics who resided in Busan and Gyeongsang Province, from April to May 2021. The common experiences were classified as follows. Firstly, there were a) a self-repression, b) self-pity and helplessness, and c) self-awareness and self-love in the continuity dimension. Secondly, in terms of situational dimension there were a) a growing-up in an alcoholic family, b) social isolation, and c) attending AA (Alcohol Anonymous) meetings. Thirdly, there were a) feelings of abandonment without sufficient care, b) isolation due to feelings of shame, and c) a decision to recovering some relationships. Lastly, positive experiences by overcoming the social stigma with help of social support are described as both external and internal as follows. In the external aspect, the experiences from perceiving self as an alcoholic to the AA meeting members with the social support. And, internally, the experiences of moving away from feelings of ‘meaningless and shameful self’ to feeling ‘self-love’ were observed and confirmed.

2017년 제주시 대기 중 PM_2.5의 화학적 조성과 오염원 추정

김수미 ( Su-mi Kim ),김길성 ( Kil-seong Kim ),현성수 ( Sung-su Hyun ),김정하 ( Jeong-ha Kim ),김명찬 ( Myeong-chan Kim ),김봉진 ( Bong-jin Kim ),이기호 ( Ki-ho Lee ) 한국환경분석학회 2018 환경분석과 독성보건 Vol.21 No.2

In this study, to characterize chemical compositions and identify the sources of PM_2.5 in the urban area of Jeju, Korea, PM_2.5-bound concentrations of 8 ionic species and 12 elements were measured from samples collected at the downtown area from January to December 2017. Positive matrix factorization (PMF) was applied to these PM_2.5 data-sets to identify the diverse sources in Jeju City. The average PM_2.5 mass concentration for the study period was 18.31±9.72 μg/m³. The contributions of water-soluble ionic species, elements and unknown components to PM_2.5 mass were 55.8%, 2.1%, and 42.0%, respectively. PMF analysis showed that a total of six source types were identified to be important. These sources are the industry related source, secondary sulfate and oil combustion, soil, biomass burning and vehicles, secondary nitrate, and sea salt.

가난 극복의 경험에 대한 자문화기술지

김명찬(Kim, Myeung Chan) 인제대학교 인간환경미래연구원 2016 인간 · 환경 · 미래 Vol.- No.17

이 연구는 가난 극복의 경험을 주제로 하고 있다. 다차원적 측면 가난으로 인해 개인이 경험하는 내외적 갈등 양상을 살펴봄으로써 가난의 심리내적, 관계적 측면을 어떻게 다룰 것인지에 대한 함의를 제시하고자 하였다. 연구의 목적을 달성하기 위하여 자기 관찰 및 분석지, 대화, SNS 덧글 등의 자료를 수집하였다. 자료를 지속적으로 검토하면서 분석하였고, 주요한 범주를 도출하였다. “수치와 불안으로서의 가난”을 통해서 가난이 드러나는 것에 대한 두려움과 그로인한 불일치와 불안 등의 문제가 있음을 알 수 있었다. “욕망에 대한 자기 처벌적 태도”을 통해서는 가난을 벗어나기 위한 과정에서 욕망에 대해 인정하지 못하고, 주체적인 삶을 사는 것에 대한 혼란을 경험하고 있음을 기술하였다. “가난 치료제: 마음을 알아주는 관계”를 통해서는 가난으로부터의 온전한 회복이 좋은 관계의 충분한 경험에 기인하고 있음을 기술하였다. 이 연구가 가난의 다차원적 문제로 인해 어려움을 겪고 있는 이들의 역동을 이해하고, 치유의 단서를 제공하는데 기여하기를 기대한다. This study is concerned with the experiences of overcoming poverty. I would like to propose how to deal with intrapsychic and relational aspects of poverty through investigating the internal and external conflicts conditions experienced by multidimensional poverty. To this end, I collected self-observation and self-analysis memos, dialogues, SNS comments, etc. I continually analysed resources and drew some major categories. “Poverty as shame and anxiety” is related to dissonance and anxiety caused by fear that psychological poverty may become known. “Self-punishment for desire” is related to disapprovals on desires to overcome poverty and disorders to be an agent for their own life. “Poverty cure: empathic relationships” is about to the enough experiences of good relations for pleasing recovery of the poverty. This study is expected to contribute to understanding dynamics of people suffering from the difficulties of multidimensional poverty, and reasoning out some implications of solutions.

난소의 출혈성 병변에 대한 임상 및 조직병리학적 연구

김명찬(Myeong Chan Kim),하상범(Sang Bum Ha),최용석(Yong Suk Choi),김종오(Jong Oh Kim),이성림(Seong Lim Lee),이헌경(Hun Kyung Lee),송승규(Seung Kyu Song),조봉춘(Bong Choon Jo) 대한산부인과학회 2000 Obstetrics & Gynecology Science Vol.43 No.10

목적 : 가임기 여성의 난소출혈은 전형적인 증상과 징후가 없어서 급성충수염이나 자궁외임신과 같은 외과적 응급 질환과 종종 혼동될 수 있다. 난소출혈 환자 101예를 분석하여 신속하고 정확한 감별 진단 및 적절한 치료에 도움이 되고자 본 연구를 시행하였다.연구방법 : 1993년부터 1997년까지 7년 동안 대림성모병원 산부인과에 급성 하복부 동통을 주소로 입원하여 수술적으로 확인된 난소출혈 환자 96예와 비수술적으로 치료한 5예의 총101예를 대상으로 발생연령, 산과력, 임상적 증상과 검사결과, 증상의 발현시 월경주기일, 병리조직학적 소견 및 수술방법에 대하여 분석하였다.결과 : 연령분포는 20대가 72예(71.3%)로 가장 많았고 평균 연령은 26.3세였으며 미산부가 58예(57.4%)이었다. 병변부위는 우측 난소가 64예(63.4%)로 더 많았으며 성교시 발생된 경우가 18예(17.8%)였고, 증상의 발현시 월경주기일은 제20∼30일 사이가 45예(44.6%)로 가장 많았다. 병리조직학적 소견상 황체낭의 파열이 31예(30.7%), 황체의 파열이 25예(24.8%), 난포낭종의 파열이 15예(14.9%), 난소임신이 9예(8.9%) 순이었다. 수술방법은 난소낭종절제술이나 난소부분절제술이 62예(61.4%)로 가장 많았다. 결론: 난소출혈은 비교적 흔한 질병으로 심한 동통과 함께 때로는 생명을 위협하는 다량의 혈복강을 동반하므로 가임기 여성의 다른 급성복증과 신속하고 정확하게 감별 진단을 하여 적응증이 된 경우는 조기에 수술적 치료를 하여 합병증을 예방하고, 미량의 출혈인 경우는 불필요한 개복수술을 하지 않고 관찰하거나 보존적 치료를 하여야 한다. Objective : Ovarian hemorrhage in a woman of reproductive age is often confused with other surgical emergencies such as acute appendicitis and ectopic pregnancy because there are no typical symptoms and signs that will make definitive diagnosis possible. The authors analyzed 101 cases of ovarian hemorrhages with the purpose of obtaining rapid and precise diagnosis and appropriate treatment. Methods : We analyzed 101 cases of ovarian hemorrhages at the Department of Obstetrics and Gynecology at Dae Rim Saint Mary's Hospital from 1993 to 1999. This analysis includes 96 preexisting cases involving finalized successful surgical treatment and 5 inpatient cases involving conservative treatment. We examined age, parity, clinical features, elapsed days of cycle, histopathologic findings, and operative methods.Results : Mean age of occurrence was 26.3 years, and 57.4% of the cases occurred in nullipara. 64 cases involved the right ovary, and 18 cases were associated with paracoital injuries. The onset of symptoms occurred most frequently between the 20th and 30th days of the menstrual cycle. The histopathologic findings were corpus luteum cyst(30.7%), corpus luteum(24.8%), follicular cyst(14.9%), and ovarian pregnancy(8.9%). The most common type of operation is ovarian cystectomy or ovarian wedge resection(61.4%).Conclusion : Ovarian hemorrhage is a relatively common disease which is accompanied by severe abdominal pain and often life-threatening surgical conditions. Therefore, differential diagnosis should be performed rapidly and precisely from other acute abdomens in a woman of reproductive age. Surgical management should be performed rapidly if indicated. If ovarian hemorrhage is minimal, it can be managed by observation or conservative treatment.

독일 통일과 유럽 통합

김명찬 ( Myung Chan Kim ) 서울대학교 독일어문화권연구소 1997 독일어문화권연구 Vol.6 No.-

N/A

無患子나무 種子의 成分에 關한 硏究

金明燦(Myung-Chan Kim),鄭泰明(Tae-Myoung Jeong),梁敏錫(Min-Suk Yang) 한국식품과학회 1977 한국식품과학회지 Vol.9 No.1

태아내 제대정맥의 정맥류 1 예와 문헌 고찰

김명찬(Myoung Chan Kim),채두병(Doo Byoung Chay),이상은(Sang Eun Lee),김종석(Jong Seok Kim),이윤호(Yoon Ho Lee) 대한산부인과학회 2002 Obstetrics & Gynecology Science Vol.45 No.7

Varix of the intraabdominal portion of the fetal umbilical vein is a rare entity. We present a case of varix of the intrafetal umbilical vein diagnosed by routine prenatal ultrasonography at 35 weeks of gestation. Color Doppler examination of the abnormal umbilical vein demonstrated turbulent flow through 23-㎜ diameter cystic dilatation of the fetal intra-abdominal umbilical vein consistent with a varix. No other sonographic abnormalities were detected, and a healthy infant was delivered at term.