싱글 튜브 시스템 BTA 工具를 使用한 SM55C 鋼의 深孔 加工 特性에 관한 硏究

全泰玉,全彦燦,沈成輔,張性圭 동아대학교 공과대학 부설 한국자원개발연구소 1994 硏究報告 Vol.18 No.2

The BTA deep hole machining has an increasing demand because of its wide applications and its good productivity. The main feature of the BTA drill is that the tool cutting edges are unsymmetrically located on the boring head. This provides a stabilizing cutting force resultant necessary for self guidance of the boring head. The BTA drills are capable of machining for having large length to diameter ratio in single pass. The study of the accuracy and surface finish of holes produced would reveal quite useful information regarding the process. This thesis deals with the experimental results obtained during single tube system BTA machining on SM55C steel for different machining conditions.

한우 myostatin 유전자의 SNP 및 발현분석

유성란,정기철,상병찬,이준헌 충남대학교 농업과학연구소 2004 농업과학연구 Vol.31 No.2

Myostatin is a transforming growth and differentiation factor-β family member that acts as a negative regulator of muscle growth. Previously, mutations in the myostatin gene were known to be related to double muscling phenotypes in cattle. Because myostatin gene is highly related to muscle mass, also meat quality, in cattle, we sequenced whole myostatin mRNA and investigated the SNPs (Single Nucleotide Polymorphisms) in Korean cattle (Hanwoo). The results indicated that Hanwoo had an SNP in nt2385 and this mutation can be a useful marker with further verifications. We also investigated expression patterns of the myostatin gene from various muscle tissues and organs. Northern blotting results indicated that myostatin expression was restricted in muscles with variable expression levels. The results presented here can be used as a valuable information for meat quality related traits and muscle mass in cattle.

압박 고 나사로 치료한 대퇴골 전자부 골절 : 고정 실패의 인자에 대한 분석 Analysis of Factors associated with Failure of Fixation

유찬훈,김홍태,변영수,남준모,조영호,문성건 대한골절학회 2002 대한골절학회지 Vol.15 No.4

목 적 : 압박 고 나사로 치료한 대퇴골 전자부 골절의 고정 실패에 영향을 미치는 요소에 대하여 분석하고자 하였다. 대상 및 방법 : 1995년 5월부터 2000년 7월까지 대퇴골 전자부 골절을 압박 고 나사를 이용하여 치료하고 1년 이상 추시가 가능했던 97예를 대상으로 하였다. 골절의 분류는 Jensen 분류법을, 골다공증의 정도는 Singh 지수를 이용하였다. 술후 방사선 검사에서 경체각, 정복 상태, 지연 나사의 대퇴골 두 내 위치, tip-apex distance(TAD) 및 지연 나사의 활강 거리를 측정하였고 고정 실패에 미치는 영향을 통계학적으로 분석하였다. 결 과 : 97예 중 17예(17%)에서 고정 실패가 발생하였고 그 중 지연 나사의 과도한 활강으로인한 경우가 15례(15.4%), 골두 천공 1얘, 10도 이상의 외반 변형 1예였다. 고정 실패의 발생과 80세 이상의 고령, 불안정성 골절, telescoping 정복, 원위 골편의 내측 혹은 전방 전위, 대퇴골 두 내 지연 나사의 위치와 밀접한 관계가 있었다. 결 론 : 압박 고 나사를 이용한 대퇴골 전자부 골절의 치료에서 고정 실패를 방지하기 위해서는 정확한 정복이 필요하고 대퇴골 두 내에서 지연 나사의 전방 위치를 피하는 것이 좋을 것으로 사료된다. Purpose : This study was performed to analyze the significant factors that may affect failure of fixation in trochanteric fractures of the femur treated with the compression hip screw. Materials and Methods : From May 1995 to July 2000, the authors analyzed 97 cases of trochanteric fracture of the femur treated with the compression hip screw and followed more than one year. We classified the fracture type by Jensen's method. We used Singh index for the degree of osteroporosis. In the post-operative radiograph, we checked neck-shaft angle, state of reduction, position of the lag screw within the femoral head, tip-apex distance, and sliding distance of the lag screw. The relationship between these factors and failure of fixation was statistically analyzed. Results : There were 17 cases(17.5%) of failure of fixation ; 15 cases(15.4%) of excessive sliding of the lag screw, 1 case (1%) of cutting out of the lag screw, and 1 case (1%) of valgus malunion. There were significant relationship between failure of fixation and old age over 80 , unstable fracture, telescoping reduction, anterior or medial displacement of the distal fragment, and anterior placement of the lag screw within the femoral head. Conclusion : Accurate reduction and avoidance of the placement of the lag screw in the anterior part of the femoral head were important factors to prevent failure of fixation in trochanteric fractures of the femur treated with the compression hip screw.

개에서 발생한 수컷 가성 반음양 1례

이기찬,손정민,윤기영,최호정,박성준,이영원,정성목,신상태,조종기 忠南大學校 獸醫科大學 附設 動物醫科學硏究所 2006 動物醫科學硏究誌 Vol.14 No.-

In this report, we present a case of the male pseudohermaphrodite in a beagle dog. The animal was subjected for examination due to enlargement of clitoris that was shown as reddish finger-like structure protruding from the vulva. Visual examination of the internal genitalia revealed that the animal possessed both testes and uterus. Based on the findings of physical examination and exploratory laparotomy, it was tentatively diagnosed as male pseudohermaphrodite. Internal genitalia and enlarged clitoris were removed for the prevention of pyometra and Sertoli cell tumor.

대구지역 가로수잎의 중금속

이찬형,윤현숙,박연준,권종대,노기철,장성환 한국환경과학회 2002 한국환경과학회지 Vol.11 No.12

This study was conducted to determine the contents of heavy metals in leaves of roadside trees according to different growth stages in Daegu city. The orders of heavy metal contents in leaves of roadside tree and soil were Fe〉Mn〉Zn〉Pb〉Cu〉Cr〉Cd and Fe〉Mn〉Zn〉Cu〉Pb〉Cr〉Cd, respectively. The contents of heavy metals in leaves of roadside trees and soil showed an increasing tendency as the levels of traffic volume increased. The contents of heavy metals in leaves on October were higher than those on May.

청소년들이 지각하는 스포츠의 가치성향

김성찬,이창준,양명환 濟州大學敎 體育科學硏究所 1995 체육과학연구 Vol.1 No.-

The purpose of this study was to examine the value orientations of sport as perceived by the youth and college student. Specifically, the purpose was to investigate whether differences on selected sport values were significantly related to gender, age, and sport participation. Subjects were 1561 students(830 male and 738 female),using sysytimatical cluster sampling, from the six secondary schools and one university in Cheju. Data for the study were collected via 10 items qestionnaire. A 5-point Likert scale, strongly disagree( 1 )-strongly agree(5), was used to measure the value orientation of sport. Sufficient internal reliabilty(Cronbachs Alpha=.84) was found for the items comprising this scale. Frequencies and one-way ANOVA were used for statistical analysis. The subjects viewed the following values acquired from the sport participation to be most important: improvement of physical fitness, good citizenship, a vehicle of social development, competition in good faith and coorperation, self-discipline, cultivation of fair play. The results indicated that gender, age and level of sport participation had a significant effects on value orientation of sport. Specifically, the gender result showed that male students perceived significantly higher level of all values of sport than did female students. The age result indicated that, for the male students, junior school students perceived significantly higher level of respect for authority than did other groups, while college students perceived significantly higher level of patriotism, self-discipline, and leadership, and physical fitness than did junior & high school students. With respect to female students, junior school students perceived significantly higher level of cultivation of competition in good faith & coorperation, respect for authority, and fair-play attitude scores than did other groups. The sport participation results revealed that, for the male students, high-sport participants expressed significnatly higher levels of all sport values(socia1 development, good citizenship, competition in good faith and coorperation, respect for authority, patriotism, social mobility, fair play, self-discipline, leadership, and physical fitness)than did low-sport participants. For the female students, high-sport participant expressed significnatly higher levels of social development, competition in good faith and coorperation, respect for authority, social mobility, fair play, self-discipline, and leadership values than did low-sport participants. Overally, the findings of this study indicated that sports are perceived in positive terms from the youth and college students.

한우 Band 3 및 CHS 유전병의 분자유전학적 기초연구

정행진,유성란,상병찬,이준헌 충남대학교 농업과학연구소 2005 농업과학연구 Vol.32 No.1

Many bovine genetic diseases are currently unidentified in Korea because of the relatively low monitoring systems in the livestock farms. The molecular detection system using PCR-RFLP of two genetic diseases, namely Band 3 (Erythrocyte Membrane Protein Band Ⅲ) and CHS (Chediak-Higashi Syndrome), have been identified in Japan and used for screening large number of cattle whether each individual has the genetic disease or not. Using the 22 unrelated Korean cattle (Hanwoo) individuals, molecular detection system based on PCR-RFLP have been investigated, which can be distinguishable carriers for the genetic diseases. Even though we could not found the causative mutations for two genetic diseases, the PCR-RFLP techniques used in this study are very valuable for the screening the genetics diseases in Korean cattle, especially for the proven or candidate bulls.

진행성 위암에 동반된 위 칸디다증 1예

이두영,김성호,선제형,박진석,손존광,선홍주,이승,박찬국 朝鮮大學校 附設 醫學硏究所 2004 The Medical Journal of Chosun University Vol.29 No.2

Gastric candidiasis is an uncommon disorder. It is an opportunistic pathogen in immune compromised individuals, alcoholics, persons treated with broad-spectrum antibiotics, immunosuppressive and chemotherapeutic agents. Besides, the use of drugs that reduce the gastric acid production may be a cause of gastric candidiasis. We experienced a case of gastric candidiasis following advanced gastric adenocarcinoma. A 85-year-old woman was admitted to our hospital because of epigastric soreness. Endoscopic findings revealed a large ulcero-infiltrating mass with yellow exudate at cardia of the stomach, which suggested an advanced gastric cancer. Endoscopic biopsy revealed spores and pseudohyphae infiltrating through the ulcerated stomach wall, diffuse infiltration of tumor cells and abortive tumor glands. After treatment with fluconazole 100 mg daily for 21 days, no evidence of the gastric candidiasis was seen on endoscopic biopsy and pathologic findings. The case is herein reported of gastric candidiasis following advanced gastric adenocarcinoma along with a review of corresponding literature.

Expansin으로 형질전환 된 담배의 생장 특성

신하정, 성현정, 백승준, 김보미, 엄유리, 조은정, 정찬문, 이이 충북대학교 연초연구소 2008 煙草硏究 Vol.21 No.-

-본문참고-

쇄골 간부 골절 불유합의 수술적 치료 : 재건 금속판 고정 및 골 이식술 Reconstruction Plate Fixation and Bone Grafting

변영수,유찬훈,안혁수,문성건,신동주,박준우 대한골절학회 2003 대한골절학회지 Vol.16 No.2

목 적: 쇄골 간부 골절 불유합에 대하여 관혈적 정복, 재건 금속판 고정 및 골 이식을 시행하고 술후 조기 관절 운동을 허용한 저자들의 경험을 보고하는 것이다. 대상 및 방법: 1997년 1월부터 2001년 12월까지 수술적 치료를 시행한 쇄골 간부 골절 불유합 16예를 대상으로 하였다. 위축성 불유합이 10예, 비후성 불유합이 6예였으며, 수상 후 불유합에 대한 수술까지의 기간은 평균 6.5개월이었다. 수술적 치료로 불유합 부위를 노출시켜 섬유조직을 제거하고 골수강을 천공하였으며, 골편을 정복하고 재건 금속판으로 고정하였으며, 자가 골 이식을 하였다. 수술 후 관절 운동은 1주일 이내에 시작하였다. 결 과: 평균 추시 기간은 22.0개월이었으며, 전 예에서 평균 10.0주에 골유합을 얻었다. 최종 추시 시의 견관절 운동범위는 전 예에서 정상으로 회복되었으며, 나이가 50게 이상인 6예 중 3예에서 동측 견관절에 간헐적인 동통을 호소하였다. 술후 감염, 재검 금속판의 파손, 고정상실, 불유합, 재골절 등의 합병증은 발생치 않았다. 결 론: 쇄골 간부 골절 불유합에 대한 관혈적 정복, 재건 금속판 고정 및 골 이식은 안정성 고정으로 조기 재활이 가능하고 견고한 골유합을 얻을 수 있어 안전하고 확실한 치료방법으로 사료된다. Purpose: The purpose of this study is to present out experience with open reduction, 3.5-㎜ reconstruction plate fixation, bone-grafting, and postoperative early mobilization for nonunions of midshaft clavicular fratures. Materials and Methods: Sixteen patients were treated operatively for nonunions of the midshaft of the clavicle from 1997 to 2001. Ten nonunions were atrophic and six were hypertrophic. Nonunion had been present for an average of 6.5 months. The operative technique included removing the fibrous tissue from the nonunion site and opening the medullary canal, reduction of the fracture and fixation with a 3.5-㎜ reconstruction plate, and bone-grafting. Postoperative mobilization started within one week. Results: The average duration of follow-up was 22.0 months. All fracture were united in an average of 10.0 weeks. All patients had full range of motion of the ipsilateral shoulder, but 3 our of 6 patients who were more than 50 years old complained occasional pain in the ipsilateral shoulder at the final follow-up examination. There were no major complications of postoperative infection, metal failure of the plate, loss of fixation, nonunion, and refracture after removal of the implant. Conclusion: The technique of open reduction, reconstruction plate fixation, and bone-grafting is a safe and reliable method to allow early rehabilitation by stable fixation and to predict a high rate of union for nonunions of midshaft clavicular fractures.