콜레라독소의 피하투여에 의한 생쥐의 림프절 및 비장내 B 및 T 림프구의 분포변화

이원규,박낙진,김종원,허영범,김정혜,안희경 대한해부학회 1995 Anatomy & Cell Biology Vol.28 No.2

휠체어농구 코치의 리더십 유형과 집단응집력의 관계

허진영,이재원 한국특수체육학회 2002 한국특수체육학회지 Vol.10 No.1

The purpose of this study was to investigate the relationship between coach's leadership style and group cohesion in wheelchair basketball teams and to examined the relationship among coach's leadership style, member satisfaction, achievement. motivation, and group cohesion. Subjects for this study are consisted of 108 players in wheelchair basketball teams. Statistics methods used to analyze the collected data are One-Way ANOVA, Simple Regression analysis, Multiple Regression analysis and Pearson Correlation. Results obtained from this research are as follows Coach's leadership style has a direct effect on group cohesion and an indirect effect through member satisfaction, achievement motivation, as well.

돼지 하악골의 micro-CT 영상에서 추출한 3차원 골미세구조와 골강도 사이의 상관관계

허경회,박무순,이원진,허민석,이삼선,최순철 대한구강악안면방사선학회 2005 Imaging Science in Dentistry Vol.35 No.3

Purpose : To investigate the relationship between three-dimensional (3D) bone imaging parameters and trabecular strength in the mandible. Materials and Methods : Bone specimens were obtained from the mandibles of five male pigs weighing around 110 kg each. Of those, 43 samples were selected for 3D analysis and measured by micro-computed tomography. The five morphometric parameters were trabecular thickness (Tb.Th), bone specific surface (BS/BV), percent bone volume (BV/TV), structure model index (SMI) and degree of anisotropy (DA). Through destructive mechanical testing, strength parameters were obtained. Results : BV/TV, SMI, BS/BV, and Tb.Th showed significant correlations with strength parameters. DA did not show any correlation with the other parameters. In multiple linear regression analysis, BV/TV alone explained 43% of the variance in Young’s modulus. By stepwise inclusion of SMI, the variance in the Young’s modulus was better explained up to 52%. Conclusions : Predicting trabecular strength in the mandible through architectural analysis would be possible. Further study is needed to establish the tendency and variety of trabecular architecture and strength according to the locations within the mandible.

양어장 폭기에 사용되는 AQUATEX 폭기장치의 효율성에 관한 기초적 실험연구

허목,정진원 제주대학교 해양연구소 1997 해양자원연구소연구보고 Vol.21 No.-

An advanced mobile technology is described to saturate the water with oxygen. The AQUATEX reactor is 2-10 times more effective in dissolving oxygen in water than many other systems used in aquaculture. because it can generate extremely small(0.005~0.05mm) bubbles. Because of the high mass transfer and very small bubble size the oxygen utilization by fish in our tests was 95 percent.

사출성형에 있어서의 금형재료와 금형제조 및 보수 기술에 관한 연구

허근태,우원호,김진환 경성대학교 생산기술연구소 1997 생산기술연구지 Vol.4 No.-

The materials of the mold in the injection molding was affected a various elements. In general, the materials of the mold depended on the number of the shots and the manufucturing mold. The munufucturing of mold needed some techniqus, one of them, the hot runner system is very utility techniqu in the injection molding using the enpla resin. The most important feature of the molding is the conservation techniqu in the manufuctures.

장애학생 관련 변인에 따른 비장애 학생의 통합태도 연구

오원석 ( Won Seok Oh ),남경숙 ( Kyung Sook Nam ),허명진 ( Myung Jin Huh ) 한국특수교육문제연구소 2006 특수교육저널 : 이론과 실천 Vol.7 No.3

장애학생 관련 변인에 따른 비장애 학생의 통합교육에 대한 태도 및 장애학생에 대한 친근감을 알아보기 위하여 본 연구를 수행하였으며, 연구 대상은 대구광역시 초등학교 5개교15학급 477명을 선정하였다. 연구 결과 장애학생의 통합에 대한 비장애 학생의 태도에 영향을 미치는 변인은 장애유형, 장애학생 성별, 장애학생의 청결상태이며, 영향을 미치지 않는 변인으로는 장애학생 부모의 관심도, 장애아 가정의 경제적 수준 그리고 장애학생의 학습 능력인 것으로 나타났다. The purpose of this study is to determine the attitudes for integration education and the intimacy with disabled students of Nondisabled students influenced by disabled students. For such purpose, 477 students of 15 classes from 5 elementary schools located in Daegu Metropolitan City were selected as the object of this study. Integrated Attitudes was measured through an investigation equipment by Oh Won-Seok and Seo-Yeong Ran which adapted and modified a testing document called Inclusion of Students who are Deaf or Hard of Hearing Inventory (ISDHH) invented by Hsin-Ling Hung(2005). The result indicated that the factors which influence the Attitudes of nondisabled students regarding integration with disabled students are the type of injury, the gender and the cleanness of the disabled student. The factors which do not influence the above are interests of the disabled student``s parents, economic level of the family and the learning ability of the disabled student.

Characterization of a Constitutive β-Lactamase from a Pseudomonas aeruginosa

유진홍,허동호,최정현,김양리,신원식,강문원 대한화학요법학회 1996 대한화학요법학회지 Vol.14 No.2

Objective : We analyzed some physicochermical chracteristics of a constitutive β-lactamase from a clinical isolate of a Pseudomonas aeruginosa which resistant to various β-lactams except imipenem and susceptible to aminoglycosides the proportion of its contribution to such resistance profile. Method : 1. Antimicrobial susceptibility test was done by the broth dilution method. 2. In hibition profile was done using EDTA, HgCl₂ and p-chloromercuribenzoate (pCMB). We also measured 50% inhibitory concentration(IC??) using β-lactamase inhibitors, such as clavulanic acid, sulbactam. 3. Kinetics study for substrate profile was performed by spectrophotometric assay using crude extracts and various antimicrobial agents. Relative hydropysis rates were determined. 4. The isoelectric point(pI) was determined by isoelectric focusing. The molecular weight was estimated by SDS-polycrylamide gel electrophoresis. Results : 1. The strain was resistant to ceftriaxone, sulperazon, piperacillin, ceftazidime, and aztreonam, while it was susceptible to gontamicin, tobramycin, amikacin and imipenem. 2. The β-lactamase was not inhibited by EDTA, and pCMB, whereas it was inhibited by HgCI₂. The IC?? of clavulanic acid was over 100μM and that of sulbactam was 22μM. 3. The relative maximal hydrolysis rate was calculated by setting V_(max) for cephaloridine at 100. The enzyme hydrolyzed cephalosporins more rapidly than penicillins. 4. The pI was 9.3 by isoelectric focusing. The molecular weight was estimated to be 40kDa. Conclusion : According to its substrate profile, pI and molecular weight, the β-lactamase from a clinical isolate of P. aeruginosa was a cephalosporinase belonging to group 1 in the Bush-Jacoby-Medeiros classification scheme.

인지양식과 과제 난이도가 경도정신지체 학생의 시각변별과제 수행에 미치는 영향

이재원,허진영 한국특수체육학회 2005 한국특수체육학회지 Vol.13 No.1

The purpose of this study was to identify effects of cognitive style and task difficulty on the performance of visual discrimination task in mild mental retardation(MMR). The major data-collection instrument was the visual discrimination task that Doane, Alderton, Pellegrino, & Sohn (1993) developed, and which the researcher adapted and augmented for students with MMR in the South Korean setting. The subjects of the study were 20 high school students with MMR from K and C high schools in Seoul, South Korea. There were four phases in the experiment: (a) screening, (b) acquisition, and (c) retention (d) transfer. Reaction time (RI), motion time (MT) and total time (fl) were collected from the experiments, and then classified into the acquisition, retention, and transfer test and analyzed. Results obtained from this research were as follow: Task difference and cognitive styles statistically and significantly affected the motor learning of high school students with MMR. Analytic cognition style and low level of task were effective for motor learning by these students, and the contextual inference effect depended on task difficulty in the transfer test. In conclusion, the results of this study showed that appropriate task difficulty should be established for motor learning by students with MMR. Furthermore, the unique characteristics of cognition acquisition styles of students should be taken into consideration.

구강외과 수술용 스텐트 기반 영상유도 수술 시스템의 개발

이우진,김대승,이원진,이삼선,최순철,허민석,허경회,김명진,이지호 대한구강악안면방사선학회 2009 Imaging Science in Dentistry Vol.39 No.3

Purpose : The purpose of this study was to develop a stent-based image guided surgery system and to apply it to oral and maxillofacial surgeries for anatomically complex sites. Materials and Methods : We devised a patient-specific stent for patient-to-image registration and navigation. Threedimensional positions of the reference probe and the tool probe were tracked by an optical camera system and the relative position of the handpiece drill tip to the reference probe was monitored continuously on the monitor of a PC. Using 8 landmarks for measuring accuracy, the spatial discrepancy between CT image coordinate and physical coordinate was calculated for testing the normality. Results : The accuracy over 8 anatomical landmarks showed an overall mean of 0.56±0.16 mm. The developed system was applied to a surgery for a vertical alveolar bone augmentation in right mandibular posterior area and possible interior alveolar nerve injury case of an impacted third molar. The developed system provided continuous monitoring of invisible anatomical structures during operation and 3D information for operation sites. The clinical challenge showed sufficient accuracy and availability of anatomically complex operation sites. Conclusion : The developed system showed sufficient accuracy and availability in oral and maxillofacial surgeries for anatomically complex sites. (Korean J Oral Maxillofac Radiol 2009; 39 : 149-56)

결합조직형성 법랑모세포종의 방사선학적 소견 : 증례보고 3례

최다혜,허경회,문제운,이원진,허민석,이삼선,최순철,박관수 대한구강악안면방사선학회 2006 Imaging Science in Dentistry Vol.37 No.1

Desmoplastic ameloblastoma is a rare histologic variant of ameloblastoma. It shows important differences in anatomic distribution, histologic appearance, and radiographic findings compared with the general type of ameloblastoma. It is histologically characterized by an abundance of densely collagenous stroma and radiographically a mixed radiolucent-radiopaque lesion. We present three cases of desmoplastic ameloblastoma. All the patients complained on buccal swelling with or without pain and the sites of occurrence were the anterior and the premolar region. Plain radiographs showed mixed radiopaque-radiolucent lesion with ill-defined or diffuse sclerotic margin and no external root resorption. Additionally, CT scans revealed buccal expansion and relatively well-defined margin of the lesions. The clinical and radiographic features of the presented cases were compared with those of the desmoplastic ameloblastoma in the previous literatures. (Korean J Oral Maxillofac Radiol 2006; 36 : 63-8)