전북지역 주요 닥나무 산지별 특성에 관한 연구

강현주(Hyun-Ju Kang),이한나(Han-Na Lee),전철(Cheol Jeon) 한국펄프·종이공학회 2013 한국펄프·종이공학회 학술발표논문집 Vol.2013 No.4

치매노인의 기능장애와 부양자원이 부양스트레스에 미치는 영향

전귀연,주현희 인제대학교 아동가족복지연구소 2001 인간환경복지연구 Vol.1 No.1

The purpose of this study was to investigate how the functional impairment of demented elderly and caregiving resources have an effect on the degree of caregiving stress. The subjects of this study were married daughters, daughters-in-law, and relatives who were caregiving to demented elderly. The 71 subjects were selected from the general hospital, specialized hospital for dementia, and welfare center in the city of Taegu. A questionnaire was used as survey method. The data were analysed through factor analysis, cronbach's α, frequency, percentile, mean, standard deviation, and multiple regression analysis. The major findings of this study were as follows: First, personalityㆍemotional and behavior impairment of demented elderly had an effect on caregiving stress of caregiver. Second, personal and family system resources of caregiver had an effect on the degree of stress in caring for demented elderly.

일개 대학병원에 내원한 원발성 폐암 환자의 인구학적 및 병리학적 특성

주혜원,강경필,김민근,박민석,임현민,이현경,이성순,이영민,김주인,염호기,최수전,이혁표 인제대학교 2006 仁濟醫學 Vol.27 No.-

Background : Recently, the lung cancer mortality rank first in Korea. The prognosis of lung cancer is not good enough with current treatments and multimodality treatments are required. So we are interested in the characteristics of lung cancer patients for better treatment. Methods : We searched lung cancer patients since 1994. Then we collected the data of primary lung cancer patients about the demographic features, histologic types and diagnotic methods. We divided the total period into 2 haves and specific analysis was tried. Results : 1) Total 850 patients were included. 633 (74.5%) were male and 217 (25.5%) were female. 2) The mean age was 65 ± 11 years old. and the peak age was 7th decades. 3) Squamous cell carcinoma(334/850, 39.3%) was slightly more prevalent than adenocarcinoma(302/850, 35.5%). Conclusion : From these results, we expected that older persons will be diagnosed to have lung cancer and adenocarcinoma will be more dominant histologic type with time.

NiTi scissors-bite corrector의 와이어 굵기에 따른 3차원적 치아 이동 양상

전현주,박선형,정상혁,전윤식 대한치과교정학회 2009 대한치과교정학회지 Vol.39 No.1

Objective: The purpose of this study was to compare the difference in three dimensional tooth movement using three different wire sizes (0.018 × 0.025-in, 0.016 × 0.022-in, 0.016-in) on a NiTi scissors-bite corrector. Methods: Computed tomography (CT) images of the experimental model before and after tooth movement were taken and reconstructed into three dimensional models for superimposition. The direction and the amount of tooth movement were measured and analyzed statistically. Results: The lingual and intrusive movements of the crown of the maxillary second molar were increased as the size of the NiTi wire increased. The roots of the maxillary second molars moved buccally except for the 0.016-in group. The intrusive movement of the roots of the maxillary second molars was increased as the size of the NiTi wire increased. Due to the use of orthodontic mini-implants, anchorage loss was under 0.2 mm on average. Conclusions: The 0.018 × 0.025-in NiTi wire was most effective in lingual and intrusive movement of the maxillary second molar which was in scissors-bite position. Indirect skeletal anchorage with a single orthodontic mini-implant was rigid enough to prevent anchorage loss. 본 연구에서는 NiTi scissors-bite corrector를 세 가지 서로 다른 굵기 0.018" × 0.025", 0.016" × 0.022", 0.016" 의 NiTi 와이어로 제작하였을 때 각각의 치아 이동 양상을 치아 이동 시뮬레이션 장치인 Calorific machine을 이용하여 3차원적으로 분석하고자 하였다. 가위교합에 이환된 상악 제2대구치 모형을 제작하고 제2소구치와 제1대구치 사이에 교정용 미니 임플랜트(orthodontic mini-implant)를 식립하여 제1대구치에 간접골성고정원을 설계하였다. 세 가지 굵기의 NiTi scissors-bite corrector를 부착하여 실험하였다. 치아의 이동 전후에 실험 모형은 computed tomography (CT)로 촬영하고 3차원 데이터로 변환하여 중첩하였다. 치아 이동 방향과 이동량을 계측하여, NiTi scissors-bite corrector 와이어 굵기에 따른 치아 이동 양상에 관한 통계적 유의성을 검정한 결과, 제2대구치 치관의 설측 이동량은 0.018" × 0.025"군(2.65 mm)이 가장 많았으며, 0.016"군(1.96 mm)과 통계적으로 유의한 차이를 보였다(p < 0.05). 제2대구치 치관의 압하량은 0.018" × 0.025"군(2.35 mm), 0.016" × 0.022"군(1.18 mm), 0.016"군(1.00 mm)으로 0.018" × 0.025"군이 나머지 두 군과 유의한 차이를 보였고 (p < 0.05), 치근의 압하량은 0.018" × 0.025"군(4.19 mm), 0.016" × 0.022"군(3.29 mm), 0.016"군(2.24 mm)으로 세 군 간 모두 통계적 유의차를 보였다 (p < 0.05). 치아의 이동 양상을 관찰한 결과, 0.016"군에서는 제2대구치 치근의 협측 이동이 나타나지 않았다. 간접골성고정원으로 사용된 제1대구치의 고정원 소실은 0.2 mm 이하로 나타났다. 이상의 결과를 토대로 0.018" × 0.025" NiTi 와이어로 제작한 NiTi scissors-bite corrector를 교정용 미니 임플랜트를 이용한 간접골성고정원과 함께 이용하였을때, 최소한의 고정원의 소실과 함께 가장 큰 상악 제2대구치의 설측 이동 및 압하가 일어났다고 할 수 있다.

김치 용매획분이 고 콜레스테롤 식이를 섭취한 토끼의 심장, 신장 및 폐의 항산화 효소계 활성에 미치는 영향

전혜년,김현주,송영옥 부산대학교 김치연구소 2003 김치의 과학과 기술 Vol.9 No.-

김치의 용매획분중 in vitro에서 LDL 산화억제 활성이 강했고 in vivo에서 지질저하 효과가 있었던 디클로로메탄 획분, 에틸아세테이트 획분, 수용성 획분이 고콜레스테롤 식이를 섭취한 토끼의 심장, 신장, 그리고 폐에서 항산화 효소의 활성에 미치는 영향을 살펴보았다. 과산화물 함량은 심장이 가장 높고 신장이 가장 낮았으나, catalase와 GSH-pxghkf성은 심장이 낮았고, 신장은 높은 활성을 나타냈다. Catalase, GSH-px 및 SOD의 활성은 모든 장기에서 1% 콜레스테롤 식이를 섭취한 대조군에 비해 김치 용매획분군에서 낮았고 특히 디클로로메탄 획분군의 항산화효소 활성은 유의적으로 낮았다(p<0.05). 이러한 결과는 김치 용매획분은 심장, 신장 그리고 폐에 지방축적을 억제하는 효과가 있었고, 그로 인해 지질 유리기의 생성이 적어, 각 장기에서 유리기를 제거하는 항산화 효소의 활성이 낮은 것으로 생각된다. The effects of dichloromethane (CH_(2)Cl_(2)), ethylacetate (EtOAc) or water (H_(2)O) fraction of Korean cabbage kimchi on anti-oxidative enzyme activities of the heart, kidney and lung of rabbit fed 1% cholesterol diet for 16 weeks were studied. The amount of kimchi fraction added to the 100g of diet was 8.3mg of CH_(2)Cl_(2), 5.6mg of EtOAc, and 221.9mg of H_(2)O, which are equivalent to 5% of freeze-dried kimchi in the diet. Each group had 6 rabbits and rabbit was housed individually. Lipid peroxide values for the heart was the highest followed by lung and kindey. But the activities of catalase and GSH-px were the lowest in the heart and the highest in the kidney. Activities of anti-oxidative enzymes (catalase. GSH-px, Mn-SOD, Cu, Zn-SOD) of rabbits fed kimchi solvent fractions added diets were lower than those of the control which fed 1% cholesterol diet. Among kimchi groups, CH_(2)Cl_(2) group showed the lowest(p<0.05) enzymes activities. Lipid accumulation in these organs fed diets with kimchi solvent fractions, especially with CH_(2)Cl_(2) fraction, were lower than that of the control. Therefore, production of the lipid free radicals might be suppressed and the activities of anti-oxidative enzymes responsible for removing the free radicals seemed to be lowered in kimch frachoin-fed rabbits.

간접접착술식에서 접착제의 종류에 따른 전단결합강도와 파절 양상

장문주,이대희,김현덕,전영미,김정기 大韓齒科器材學會 2001 대한치과재료학회지 Vol.28 No.4

The purpose of this study was to compare the shear bond strength and failure type of various adhesives in indirect bonding technique. Five types of orthodontic bonding adhesives - ES(Excel sealant), EP(Excel paste), EA(sealant and past), T(Transbond XT sealant), L(Light bond sealant) - were used in this study. Metal bars(70×7×7㎜) were milled and sand-blasted with 50㎛ alumina and then coated with resin. resin blocks(3×4×5㎜) were made and bonded to the resin-coated metal bars with various adhesives. Shear bond strengths were measured by an universal testing machine. The film thickness, interface region. Self-curing resin, EX(Excel sealant) showed the greatest shear bond strength(22.82±3.05 ㎫) and self-curing resin, EP(Excel paste) showed the lowest shear bond strength(13.91±2.70 ㎫). The shear bond strength of self-curing resin, EA(sealant and past : 20.94±0.92 ㎫) was similar to those of light-curing resins, T(Transbond XT sealant : 20.90±2.34 ㎫), L(Light bond sealant : 18.12±1.63 ㎫) group. Most of the failure occurred between the resin coated metal bars and sealant regardless of the adhesives.

3차원 영상의 고속생성을 위한 병렬화 프로그램의 개발

문현주,전중남,김석일 충북대학교 컴퓨터 정보통신 연구소 1997 컴퓨터정보통신연구 Vol.5 No.1

3차원 영상생성 과정을 반복하는 모의비행 프로그램은 매우 방대한 계산량을 필요로 하므로 빠른 작업을 위해서는 고성능 슈퍼컴퓨터의 사용이 필수적이다. 슈퍼컴퓨터의 경우에도 하나의 프로세서를 사용하기 보다는 다수개의 프로세서를 사용하여 작업을 병렬로 수행함으로써 보다 큰 속도향상을 얻을 수 있다. 본 논문에서는 Cray Y-MP 벡터 슈퍼컴퓨터를 이용하여 3차원 영상을 생성하는 병렬 프로그램을 개발하였다. 본 논문에서 구현된 병렬 프로그램은 Cray Y-MP를 구성하는 여러개의 프로세서를 사용하므로 단일 프로세서를 사용하는 경우에 비하여 프로그램의 수행속도를 크게 향상시키게 되었다.

간외담관 폐쇄에서의 초음파소견 : 담관벽 경계소실의 중요성 Significance of Decreased Echotexture of Bile Duct Wall-Interface

신현준,손은주,이창희,최영칠,전혜정,박정희,이태의 건국대학교 의과학연구소 2002 건국의과학학술지 Vol.12 No.-

Ultrasound is very useful in evaluation of obstructive jaundice. We retrospectively evaluated the useful findings of ultrasonography in differentiating benign extrahepatic duct obstruction from malignant diseases. Among the 36 patients, 25 patients were benign extrahepatic obstruction and 11 patients were malignant obstruction. The shapes of extrahepatic dilatation were classified into fustiform, meniscus, and abrupt cut off by bowel gas. The diameter, length, and bile duct wall-interface were compared between benign and malignant groups and serum bilirubin and alkaline phosphatase were also compared between two groups retrospectively. The results were as follows. The most common form of extrahepatic dilatation was meniscus(10 of 26 patients, 38%) in benign obstruction, and fusiform(8 of 11 patients, 73%) in malignant obstruction. No significant difference was noted in diameter, length, serum bilirubin, and alkaline phosphatase between benign and malignant groups. Only one case showed decreased bile duct wall-interface in benign obstruction, but loss or decrease of bile duct wall-interface were 8 patients in malignant obstruction. The combined findings of fusiform dilatation and loss of bile duct wall-interface in ultrasonography will be helpful in differential diagnosis of malignant extrahepatic bile obstruction from benign conditions.

영아기 자녀를 둔 취업부의 결혼만족도에 영향을 미치는 변인

신현주,전귀연 한국가족관계학회 2008 한국가족관계학회지 Vol.13 No.2

The purpose of this study was to investigate how much socio-demographic variables, personal variables, relational variables, and situational variables have an effect on marital satisfaction of the working fathers with infant. The subjects of this study were the working fathers 185 who reside in Daegu and Kyung-Buk and have children under the 36 months. The instruments of measurement were marital satisfaction scale, gender-role attitude scale, personality Scale, communication type scale, and conflict-coping method scale, parenting stress scale, household duties work accomplishment satisfaction scale, and economic satisfaction scale. The major findings of this study were as follows: First, children age had an effect on the marital satisfaction of working father. Second, rational communication attitude had an effect on the marital satisfaction of working father. Third, satisfaction of income, satisfaction of performing household duties had an effect on the marital satisfaction of working father. Finally, satisfaction of income, parenting stress burden, distress caused by performing partental role, satisfaction of household duties had an effect on the marital satisfaction of working father than any other variables have.

다중 제어루프에 의한 자기부상용 DC-DC 전원장치에 관한 연구

조주현,조정민,전기영,이상집,이승환,오봉환,이훈구,한경희 明知大學校 産業技術硏究所 2004 産業技術硏究所論文集 Vol.23 No.-

The author present a modified multi-loop algorithm including feedforward for controlling a 55kW step down chopper in the power supply of Maglev. The control law for the duty cycle consists of three terms. The first is the feedforward term which compensates for variations in the input voltage. The second term consists of the difference between the slowly moving inductor current and output current. The third term consists of proportional and integral terms involving the perturbation in the output voltage. This perturvation is derived by subtracting the desired output voltage from the actual output voltage. The proportional and integral action stabilizes the system and minimizes output voltage error. In order to verify the validity of the proposed multi-loop controller, simulation study was tried using Matlab simulink.