역류식 충진탑에서 수력학적인 분석과 이산화탄소의 탈착에 관한 연구

楊善惠,崔東勳,지혜미,金恩貞,金彰昊 동아대학교 환경문제연구소 1996 硏究報告 Vol.19 No.1

This study was carried out to interpret hydraulic behavior and CO₂gas desorption in countercurrent packing tower which packed 50 mm plastic Hiflow-ring. The results are as follows: 1. To compare with conventional packing, 50mm Hiflow-ring could save energy because of low pressure drop under high load. 2. As relative error between calculated value and investigated value was less than 6% in the loading point and flooding point we found that we can predict results mathematically which occurres in the packing tower. 3. The unique magnituteds of packing which was used are as follows. C_(L) = 2.1×10^(-4), n = 0.787 so we can predict efficency which occurres.

대장암종에서 암관련 유전자들의 Promoter Methylation과 암종 발생 및 진행과의 관게에 대한 연구

정동준,이정은,민영기,조성우,백무준,양승하,김의한,김창진 순천향대학교 교수학습개발센터 2004 Journal of Soonchunhyang Medical Science Vol.10 No.3

The colorectal corcinoma is one of the most common malignant tumor in Korea and its carcinogenic mechanism has not been elucidated exactly yet. So far, the most common carcinogenic mechanism has been known to be multiple genetic changes. But, the CpG island hypermethylation has been revealed to be one of the most important carcinogenic mechanism second to the genetic changes. The epigenetic changes characteristically imprint and transfer to the next generation without changes of nucleotide sequences. When the CpG island of promoter or 5'- exon 1 of a specific gene is methylated by DNA methyltrasferases (DNMTs), the gene expression is inhibited. Carcinogenic mechansisms by promoter methylation has been well known, but the progression of the cancer has not been elucidated yet. The molecular researches on the carcinogenic mechanisms largely depended on the tumor tissue containing various components of cell, due to difficulties in harvesting pure homogeneous tumor cells. Promoter methylatonof the cancer related genes as APc, hMLH2, p16, DAP-K and MGMT in 50 cases of sporadic colorectal carcinoma was studied. The pure normal colorectal epithelial cells, and cancer cells from superficial and deep invasive portion were harvested respectively by laser captured microdissection(LCM), and DNA was extracted from them. The promoter methylation was studied by methylation specific poymerase reaction (MSP) after bisulfite modification of the DNA and the expression of the genes by immunohistochemistry. The results suggests that promoter methylation of the cancer related genes are closely related with the colorectal carcinogenesis and it occurrs from early phase of carcinogenesis, progressing constantly to the late stage. And the promoter methylation of normal epithelial cells increased by age. The p15, known to be the genes related to hematologic malignancy, was closely related to the colorectal carcinoma as well.

중환자실 병원감염에 대한 다기관 공동 조사연구

박은숙,박미라,진혜영,김정은,최정실,송영구,최영화,이위교,홍성관,허애정,양동규,김준명 대한병원감염관리학회 2003 의료관련감염관리 Vol.8 No.1

Mini-implant를 이용한 III급 부정교합 환자의 협진 치료 : 문제중심의 교정치료

임동혁,김영신,조민아,김기성,양성은 대한치과교정학회 2007 대한치과교정학회지 Vol.37 No.4

PILOMATRICOMA 치험 1례

김은철,이창우,임창준,이동근,김수남,양희창 大韓顎顔面成形再建外科學會 1990 Maxillofacial Plastic Reconstructive Surgery Vol.12 No.3

The pilomatricoma (calcifying epithelioma of Malherbe) is rare benign hard, spherical and freely movable cutaneous tumor, which was differentiated from hair cells, particulary hair cortex cells. It is usually occured as a single, asymptomatic, 0.5 cm to 3.0 cm sized, deep seated, firm nodule, covered by normal or pink skin. It arises chiefly in young people, including children, and most often in the head, neck and upper extrimites. The authers experienced a case of pilomatricoma which occured in preauricular region. This case was summarized as follows. 1. 10 years old female has suffered from hard subepidermal mass on preauricular area and she visited our out patient clinic. So we performed surgical extirpation and the excised specimen was pathologically examined. 2. Grossly the tumor measures 2.0 cm in diameter and firm, bosselated, spherical shaped which covered by a thin layer of fibrous tissue. On cut section, it shows spicular gritty surfaces, well encapsulation, interwoven and keratotic lamellae. 3. Histopathologically, the epithelial masses of the tumor are composed of two type of cells, basophilic cells and shodow cells. The basophilic cells resemble hair matrix cells which posses round or elogated, deeply basophilic nuclei and scanty cytoplasm.The shadow cells show a central, unstained shadow at the site of the lost nucleus. Gradual development of basophilic cells into shadow cells can be observed. Foci of calcification are present within the lobule of shadow cells. The stroma of the tumor shows a considerable foreign body giant cell reaction adjacent to the shadow cells. 4. No recurrence was observed until post - operative 40 months.

망원경에 대한 초등 예비 교사들의 개념 조사

채동현,양종천,김은영 전주교육대학교 과학교육연구소 2001 科學 敎育 硏究 論文集 Vol.23 No.1

Presevice students' conceptions on the telescope were Investigated. Samples consisted of 63 students in Chonju National University of Education. The open-ended written questionnaire were used. The result were that students' naive theories on the telescope were numerous. For example, 87% students held the idea that when someone salts a object through the telescope, the object could be seen larger. This study was also discussed the teaching strategies to overcome these naive theories on the telescope.

2급 와동 수복 시 한국 치과 의사들의 복합레진 사용 실태 연구

신동호,박세은,양인석,장주혜,이인복,조병훈,손호현 대한치과보존학회 2009 Restorative Dentistry & Endodontics Vol.34 No.2

본 연구는 2008년 1월 현재 한국 치과의사들의 복합레진 사용 실태에 관한 설문 조사로서, 2급 와동을 수복하는 증례에서 치과의사의 면허 년도, 교육 배경 및 진료환경 등에 따라 수복재료의 선택, 복합레진의 사용여부 및 사용방법, 문제점 등을 비교하였다. 한국 치과의사들을 대상으로 2급 와동 수복에 관한 17 문항의 설문지를 제작하였다. 이 설문지는 시술자 정보 2급 와동의 수복으로 크게 2부분으로 나누어진다. 이 설문지는 대한치과의사협회를 통해 12.193 명의 치과의사들에게 E-메일로 발송되었다. 이 중 2.612개의 메일이 수신 확인되었고 840 개의 설문지가 작성되어 회신되었다. 수신 확인된 메일 수에 대한 회신된 메일 수의 비율 (회신율)은 32.2%이었고, 이 자료는 SPSS프로그램에서 카이제곱 분석을 이용하여 교차 분석하였다. 답변자의 비율은 면허년도를 기준으로 1998 ~ 2007년에 면허를 취득한 그룹 (한국 전체 치과의사의 33 3%, 추정 년령 26-35세)이 60.3%로 1997년 이전에 면허 취득한 그룹 (한국 전체 치과의사의 66.7%.추정 년령 36세 이상)의 39.7%보다 높은 것으로 나타났다. 또한 이들이 근무하는 병원은 개인의원 (77%)이 가장 많았고 남자 치과의사(79%)가 많았다. 복합레진 수복에 대한 지식은 학생 때 수업이나 학회, 세미나를 통하여 (83.4%) 얻은 것으로 나타났다. 2급 와동 수복 시 재료 선호도를 살펴보면 금인레이가 65.7%를 차지하고 있고 복합레진 직접 수복은 12.1%로 낮게 나타났다. 2급 와동의 복합레진 직접 수복 시 시술 방법에 있어서는 러버댐을 사용하지 않거나 잘 사용하지 않는 그룹의 비율(74.4%)이 더 많았고. 격벽법으로는 mylar strip (53.4%)이나 metal matrix (33.8%), Palodent svstem (6.5%)를 사용하였다. 충전은 적층법 (99.6%)을 사용하는 것으로 나타났으며, 시술 시 인접면 형성을 가장 어려워하였다.(57.2%). 2-step 접착시스템 (76%)이 3-step 접착시스템 (16%)보다 많이 사용되고 있었다. 사용하는 레진 제품으로는 Z250(20%)이 가장 많이 사용되고 있었다. The purpose of this study was to assess the current materials, methods and difficulties according to the year of licence and educational background of Korean dentists in Class Ⅱ direct composite resin restorations. Total 17 questions were included in the questionnaire. Questions were broadly divided into two parts first, operator's information and second the materials and methods used in Class Ⅱ posterior composite restoration. The questionnaire was sent to dentists enrolled in Korean Dental Association via e-mail. Total 12,193 e-mails were distributed to dentists. 2,612 e-mails were opened and 840 mails (32.2%) were received from respondents. The data was statically analyzed by chi-square test using SPSS(v 120.1 SPSS Inc. Chicago. IL USA). Male dentists among respondents was 79% 60.3% of the respondents acquired their licences recently (1998-2007) and 77% practiced in private offices 83.4% have acquired their knowledge through school lectures conferences and seminars. For the Class Ⅱ restorations gold inlays were preferred by 65.7% of respondents while direct composite resin restorations were used by 12.1% amalgam users were only 4.4% of respondents. For the restorative technique 74.4% of respondents didn't use rubber dam as needed. For the matrix. mylar strip (53.4%), metal matrix (33.8%) and Palodent system (6.5%) were used 99.6% of respondents restored the Class Ⅱ cavity by incremental layering. Obtaining of the tight interproximal contact was considered as the most difficult procedure (57.2%) followed by field isolation (21%). Among various bonding systems, 22. 6% of respondents preferred SE Bond and 20.2% used Single Bond. Z-250 was used most frequently among a variety of composite resins.

주의력결핍/과다활동장애(ADHD)아동에서 사회기술훈련

한은선,안동현,이양희 대한소아청소년정신의학회 2001 소아청소년정신의학 Vol.12 No.1

목적 : 주의력결핍/과다활동장애(ADHD) 아동들은 또래관계를 영위하는데 필요한 것을 포함한 다양한 사회기술에 결함을 보인다. 이들의 치료에 약물치료를 포함한 부모훈련, 교육적 접근 등이 필요하지만 이와 함께 이들에 대한 사회기술훈련이 시도되고 있다. 이들에게서 사회기술훈련을 적용하여 그 효과를 검증해보고자 한다. 방법 : ADHD로 진단 받은 초등학교 아동 5명과 그들의 부모 5명을 대상으로 Pfiffner와 McBurnett이 제안한 프로그램을 중심으로 총 8회기의 프로그램을 수행하고, 사회기술, 문제행동, 또래의 사회적 수용도, 양육태도 및 양육스트레스, 프로그램 만족도를 비교해 보았다. 결과 : 교사와 부모가 평가한 내용이 다소 달랐는데, 교사는 사회기술과 또래의 사회적 수용도에서, 부모는 문제행동의 감소에서 유의미한 호전을 보고하였다. 부모들은 양육태도에서는 별 변화가 없었지만 양육스트레스에서는 현저한 감소를 보고하였으며, 프로그램 만족도는 상당히 높았다. 결론 : ADHD 아동에서 사회기술훈련은 최근에, 주로 보조적이거나 매우 제한적으로 시행되고 있다. 하지만 상당히 많은 아동들이 사회기술의 결함을 호소하고 있기 때문에 이들이 통합적 접근에서 이들의 치료 프로그램에 포함되어 시행하는 것이 바람직하겠다. 중심단어 : 주의력결핍/과다활동장애ㆍ사회기술훈련ㆍ일반화. Objectives : The children with ADHD have some deficits in social skills including the peer relationship. There are several approaches to teaching social skills to children with ADHD, and many are combined in comprehensive programs to maximize treatment effects. We conducted this study to explore the direct effects of social skills training program applied to children with ADHD. Method : Five children and their mothers who were diagnosed to Attention Deficit-Hyperactivity Disorder (ADHD) in Y elementary school survey participated to the study. We performed the 8- session program with the modified the Pfiffner and McBurnett's program(1997), and assessed the social skills, problem behaviors, peer acceptance, parenting behaviors, and parenting stress. Results : Parent's reports were some different from teacher's reports ; teacher reported improvement in social skills and peer acceptance, but parent notified decrement in problem behaviors. And also, there were no changes in maternal behaviors, but significant reducing effects in parenting stress. Conclusion : The stimulants are mainstream in treatment of children with ADHD. The social skills training programs are combined in comprehensive treatment programs in children with ADHD to maximize treatment effects. KEY WORDS : ADHD ㆍ Social skill training ㆍ Generalization.

임신과 동반된 난소섬유난포막종 1례

류은석,김윤숙,전섭,김종수,최승도,선우재근,배동한,양승화 순천향의학연구소 2005 Journal of Soonchunhyang Medical Science Vol.11 No.1

Fibrothecoma are mesenchymal tumors deriving from the ovarian stroma and consisting of theca-like elements and fibrous tissues. The reported incidence is between 0.4 and 8.0% of all ovarian tumors and this side variability can be attributed to the difficulty in differentiation fibrothecoma from ovarian fibroma or hyperplastic stroma nodules. We experienced a rare case of ovarian fibrothecoma in woman at 38 weeks gestation with previous repeat cesarean section diagnosed after tertiary cesarean delivery and bilateral tubal ligation with a brief review of literature.

보리를 이용한 가공식품 제조와 그 특성

고정은,양영택,송살철,김정숙,한동휴,고정삼 濟州大學校亞熱帶農業硏究所 1996 亞熱帶農業硏究 Vol.13 No.-

요약 제주산 보리차 및 보리음료 제조를 위한 원료의 일반성분과 무기물을 분석하였으며, 상품화 가능성을 관능검사를 통하여 평가하였다. 일반성분 및 무기물의 분석결과, 원료의 종류에 따라 다소의 차이는 있었으나 대체적으로 표준분석값과 유사하였다. 보리차의 경우 시판하고 있는 회사제품과의 차별화를 위하여 볶음결명자, 볶음옥수수, 살구씨 등을 혼합한 형태의 보리차 기호성을 검토하였다. 볶음보리만을 이용한 보리차보다는 볶음보리에 볶음결명자, 볶음옥수수, 살구씨를 16 : 1.5 : 2 : 0.5의 비율로 각각 첨가한 보리차를 가장 선호하였다. 그리고 볶음 정도에 따라 추출한 보리차의 색깔이 차이를 나타내었으며, 시판하는 보리차의 흡광도가 420nm에서 0.369인데 비하여 볶음정도가 낮은 시제품의 흡광도는 0.182로서 약간 연한 색깔을 선호하였다. 보리음료의 경우, 미숫가루만을 사용할 때는 볶음보리가루 : 물을 1 : 9로 하고 여기에 첨가하는 설탕농도를 9%로 하는 것에 가장 좋은 선호도를 나타내었다. 그러나 볶음보리가루만을 사용한 경우는 향미가 약하여 기호성가 떨어진 반면 미숫가루 : 볶음찹쌀가루 : 볶음콩가루 : 볶음참깨가루를 9 : 0.5 : 0.3 : 0.2의 비율로 혼합한 혼합가루 10g에 설탕 6g의 비율로 사용하는 경우 기호성이 가장 좋았다. 또한, 대용식인 조식시리얼로 미숫가루를 사용하는 경우 미숫가루 : 물을 10 : 4의 혼합비율로 하며, 미숫가루 : 볶음찹쌀가루 : 볶음콩가루 : 볶음참깨가루를 8 : 0.5 : 1.0 : 0.5의 비율로 혼합한 경우 기호성이 가장 좋았다. 미숫가루의 상품화를 위해서는 기호성의 향상을 위한 음용형태에 따른 배합비율의 최적화, 포장디자인 및 포장방법의 개선, 차별화를 위한 홍보 등이 필요할 것으로 판단된다. Summary Chemical analysis of barley and other cereals related to tea and beverage products, and sensory evaluation were investigated. Proximate compositions and inorganic elements contents of raw materials produced in Cheju were similiar to standard values. Blending at the ratio of 16 roasted barley, 1.5 roasted Cassia tora seed, 2 roasted corm, and 0.5 apricot seed was the better, compared to roasted barley only, for barley tea on sensory evaluation. According to the degree of roasting, the color of extracts with boiled water was different. Absorbance at 420nm of commercial barley extracts was 0.369, compared to the value of 0.182 on sample in this experiments. For barley beverage, 10% of roasted barley powder added 9% of sugar was the vest on sensory evaluations However, blending at the ratio of 9 roasted barley powder, 0.5 roasted glutinous rice powder, 0.3 roasted soybean powder, and 0.2 roasted sesame powder, added 6% of sugar, was the best, compared to roasted barley powder only, for barley beverage on sensory evaluations. On 40% of roasted barley powder only, for morning cereals, blending at the ratio of 8 roasted barley powder, 0.5 roasted glutinous rice powder, 1.0 roasted soybean powder, and 0.5 roasted sesame powder was the best on sensory evaluations, compared to roasted barley powder only.