저온 체외순환 후 체온과 혈액가스의 변화

윤은숙,정창영,임웅모 全南大醫大 1985 전남의대학술지 Vol.22 No.4

체육교과 평가방식에 대한 소비자 의견 분석

모창배,유인영,김정식 청주대학교 학술연구소 2004 淸大學術論集 Vol.2 No.-

To collect customers opinion about physical education estimation system, this study targeted on 3rd grade students at academic high schools in Cheongju-city and Chungju-city in Chungcheongbuk-do. Main subjects of the study are each 4 classes in boys high school and girls high school. This paper examines the feasibility of estimation system change in the result of collecting customers opinion about estimation factors like reflection of school record and change, time factors like time obstacle and exercise ability, ability factors like influence and contents of school record, result factors like fairness of estimation, course factors like necessary and value of estimation and academic factors like private education expenses and its reduction. Based on the above result, it analyzes certification and correlation by item, sex and factor focused on every factor. Study materials are managed by SAS Package(Window Ver. 6.11). In the result of correcting customers opinion about the above estimation system, it shows as follows: First, it showed the difference by sex in change and reflection of physical education estimation system, change and influence of school record and necessary and value of estimation contents. Second, many male students supported items about exception and reflection of school record in physical education. It showed that most of students asked to change estimation system. Third, it showed time obstacle by students exercise ability in physical education estimation system. Male students have more obstacles to study other subjects than female ones. Fourth, it showed that many students asked to change estimation system not by influence of school record but by exercise ability. Fifth, it showed that many students emphasized fairness in estimation results by teachers. Sixth, in the case of male students, they asked enjoy activity and in the case of female ones, they asked physical development and health maintenance. Most students replied that physical education is necessary subject regardless of estimation. Seventh, Most students replied that physical education estimation system is not cause of increasing private education expenses directly. Eighth, students at academic high school have much correlation with estimation, time, ability, result and academic factor. On the other hand, it showed that subject factor did not much correlation with other factors.

국궁 사법의 원형에 대한 실태 분석

모창배(Chang Bae Mo),정진명(Jin Myung Jeong) 한국사회체육학회 2007 한국사회체육학회지 Vol.0 No.31

Though Korean Traditional Archery has existed for countless centuries, few, if any, records exist on this subject. The fact that it takes years, indeed decades, of practice to master archery only compounds the difficulty in documenting it. Fortunately, this dearth in documented accounts of Korean Traditional Archery (hereafter referred as KTA) was alleviated with the publication of ``Joseon ui Gungsul``. However, since its original publication over 70 years ago, there have been and continue to be many changes and developments in the field, and it follows that the time has come to review, re-assess, and redefine the nature and form of KTA. Recognizing that a single individual`s account of KTA does not give us a valid picture of what defines it, we decided to collect the accounts of numerous veteran archers since the Liberation of Korea and to specifically look for common pointsin order to get a clearer picture of what KTA really is. The results of our research indicate that those accounts generally correlate with the data found in ``Joseon ui Gungsul``. We also found, however, that the KTA as described by these veteran archers differed from that described in ``Joseon ui Gungsul`` in many significant respects. They agree that there have been many changes in KTA since Korea`s liberation and that for a variety of reasons there appeared a modern form of KTA in the late 1970`s. One of the more significant changes was that modern KTA incorporated the pushing of the ``bow`` hand to generate power(characteristic of Western archery) whereas in classic KTA most of the power was generated by the drawing of the ``arrow`` hand. The documented accounts of post-Liberation veteran archers attest to the fact that KTA has changed and continues to change. There is a common recognition, however, that the traditions that define classic KTA are valuable and must be preserved. And for this reason we note that, for the most part, the accounts of the post-Liberation veteran archers generally match the data found in ``Joseon ui Gungsul``.

Comparison of changes in retentive force of three stud attachments for implant overdentures

Su-Min Kim,Jae-Won Choi,Young-Chan Jeon,Chang-Mo Jeong,Mi-Jung Yun,So-Hyoun Lee,Jung-Bo Huh 대한치과보철학회 2015 The Journal of Advanced Prosthodontics Vol.7 No.4

PURPOSE The aim of this study was to compare the changes in retentive force of stud attachments for implant overdentures by in vitro 2-year-wear simulation. MATERIALS AND METHODS Three commercially available attachment systems were investigated: Kerator blue, O-ring red, and EZ lock. Two implant fixtures were embedded in parallel in each custom base mounting. Five pairs of each attachment system were tested. A universal testing machine was used to measure the retentive force during 2500 insertion and removal cycles. Surface changes on the components were evaluated by scanning electron microscopy (SEM). A Kruskal-Wallis test, followed by Pairwise comparison, was used to compare the retentive force between the groups, and to determine groups that were significantly different (α<.05). RESULTS A comparison of the initial retentive force revealed the highest value for Kerator, followed by the O-ring and EZ lock attachments. However, no significant difference was detected between Kerator and O-ring (P>.05). After 2500 insertion and removal cycles, the highest retention loss was recorded for O-ring, and no significant difference between Kerator and EZ lock (P>.05). Also, Kerator showed the highest retentive force, followed by EZ lock and O-ring, after 2500 cycles (P<.05). Based on SEM analysis, the polymeric components in O-ring and Kerator were observed to exhibit surface wear and deformation. CONCLUSION After 2500 insertion and removal cycles, all attachments exhibited significant loss in retention. Mechanism of retention loss can only be partially explained by surface changes.

Comparison of changes in retentive force of three stud attachments for implant overdentures

Kim, Su-Min,Choi, Jae-Won,Jeon, Young-Chan,Jeong, Chang-Mo,Yun, Mi-Jung,Lee, So-Hyoun,Huh, Jung-Bo The Korean Academy of Prosthodonitics 2015 The Journal of Advanced Prosthodontics Vol.7 No.4

PURPOSE. The aim of this study was to compare the changes in retentive force of stud attachments for implant overdentures by in vitro 2-year-wear simulation. MATERIALS AND METHODS. Three commercially available attachment systems were investigated: Kerator blue, O-ring red, and EZ lock. Two implant fixtures were embedded in parallel in each custom base mounting. Five pairs of each attachment system were tested. A universal testing machine was used to measure the retentive force during 2500 insertion and removal cycles. Surface changes on the components were evaluated by scanning electron microscopy (SEM). A Kruskal-Wallis test, followed by Pairwise comparison, was used to compare the retentive force between the groups, and to determine groups that were significantly different (${\alpha}$<.05). RESULTS. A comparison of the initial retentive force revealed the highest value for Kerator, followed by the O-ring and EZ lock attachments. However, no significant difference was detected between Kerator and O-ring (P>.05). After 2500 insertion and removal cycles, the highest retention loss was recorded for O-ring, and no significant difference between Kerator and EZ lock (P>.05). Also, Kerator showed the highest retentive force, followed by EZ lock and O-ring, after 2500 cycles (P<.05). Based on SEM analysis, the polymeric components in O-ring and Kerator were observed to exhibit surface wear and deformation. CONCLUSION. After 2500 insertion and removal cycles, all attachments exhibited significant loss in retention. Mechanism of retention loss can only be partially explained by surface changes.

네트워크 텍스트 분석방법을 이용한 방과후학교 연구동향 분석

장창성(Jang, Chang Sung),배상훈(Bae, Sang Hoon),정영모(Jeong, Yeong Mo),김재형(Kim, Jae Hyeong) 한국방과후학교학회 2017 방과후학교연구 Vol.4 No.1

본 연구는 방과후학교 연구동향을 분석하고, 향후 연구과제와 방향에 대한 시사점을 제공하는데 목적이 있다. 한국교육학술정보원의 ‘학술연구정보서비스’를 이용하여 2004년부터 2016년 까지 방과후학교를 주제어로 하는 학술지 논문을 분석대상으로 하였으며, 분석대상 논문들의 연구주제, 연구방법, 연구대상을 빈도분석하고, NetMiner 5.0 프로그램을 사용하여 주제어에 대한 네트워크 텍스트 분석을 실시하였다. 주제어 분석은 정책 변동을 기준으로 시기별로 나누어 제시하였다. 빈도분석 결과 양적연구, 서술적연구, 질적연구, 혼합연구 순으로 다양한 연구가 이루어지고 있음을 발견할 수 있었다. 시기별로는 확산기(2004~2007)에 초등 돌봄 주제를 중심으로 하는 연구가 많았으며, 조정기(2008~2010)에 사교육관련 주제의 연구가 많았다. 내실화기(2011년 이후)에는 초등학교, 방과후학교 참여, 운영실태, 사교육, 학업성취 등을 주제로 하는 다양한 연구가 진행되었다. 연구결과를 종합해 보면 방과후학교 관련 연구가 연구 주제, 내용, 방법 측면에서 점차 다양해지고 활발해지고 있었다. 향후 연구방향에 대한 시사점으로 2008년 이후 방과후학교 정책 사업이 시도교육청으로 이양된 이후 학교 현장에 나타난 변화와 방과후학교 프로그램의 질 관리를 위한 연구 등에 대한 필요성을 제시하였다. The study aims to analyze the trends of after school research and to provide implications for future research tasks and direction. Using the Research Information Sharing Service of Korea Education & Research Information Service , we analyzed the academic papers with after school from 2004 to 2016. The research subjects, research methods, and subjects of the research articles were analyzed frequency and network texts analysis of the keywords using NetMiner 5.0 program. Key word analysis is divided by period according to policy change. As a result of frequent analysis, it can be found that various studies are conducted in the order of quantitative research, descriptive research, qualitative research, and mixed research. There were many studies focusing on primary care topics in the diffusion periods(2004~2007) and many researches on private education subjects in the adjustment periods(2008~2010). Various studies were conducted on subjects such as elementary school, after-school participation, operation, private education, and academic achievement in the strengthening period(since 2011). According to the results of the study, after-school researches have been increasingly diversified in terms of research subjects, contents and methods. This study suggests the necessity of research on the change of school after the after-school policy has been transferred to the school site since 2008. Also, it suggested the necessity of research for quality management of after-school program.

임플란트의 collar design이 변연골과 연조직에 미치는 영향

유현상,강선녀,정창모,윤미정,허중보,전영찬 대한치과보철학회 2012 대한치과보철학회지 Vol.50 No.1

연구 목적: 임플란트 경부가 잘 설계된 경우 양호한 연조직 반응을 통해 변연골을 보존하는데 도움이 된다. 본 실험에서는 연, 경조직 경계부에 가장 가까이 위치하는 임플란트의 collar design이 변연골 변화와 연조직 반응에 미치는 영향을 동물실험을 통해 알아보고자 하였다. 연구 재료 및 방법: 2마리의 건강한 Beagle dog에 임플란트 collar design만 다른 두 종류의 임플란트(Neobiotech Co. Seoul, Korea)를 식립하였다. Collar에 bevel 을 부여한 군(Bevel 군)과 "S"자 형태를 부여한 군(Bioseal 군)으로 나누어 마리 당 7개, 군당 7개, 총 14개의 임플란트를 무작위로 식립한 후 Healing abutment를 즉시 체결하였다. 디지털 표준구내 방사선사진을 이용해 4주 간격으로 총 12주간 근원심 변연골 변화를 관찰하였고, 12주에 희생하여 조직학적 분석을 통해 협설 변연골 흡수 및 임플란트 주변 연조직 반응을 평가하였다. Mann-Whitney test를 통해 동일한 방사선 사진 촬영 시점에서 근원심 변연골 변화량 및 조직계측치를 군 간 비교하였고, Kruskal-Wallis test를 통해 방사선 사진상 근원심 변연골 변화량이 시간에 따른 차이가 있는지 군 내 분석 한 후 Duncan test를 통해 사후 검증하였다(α=.05). 결과: 방사선학적 분석 결과 각 촬영 시점에서 두 군간 근원심 변연골 변화량의 차이를 보이지 않았다(P>.05). 군 내에서 시간에 따른 근원심 변연골의 흡수량을 분석한 결과 Bevel 군에서는 시간에 따른 차이를 보이지 않았으나 (P>.05), Bioseal 군에서는 시간에 따른 차이를 보였으며, 4주및8주와 비교했을 때 12주에서 변연골의 증가를 보였다(P<.05). 조직학적 분석 결과 협설측 변연골 흡수량에서 두 군간 차이를 보이지 않았으나 (P>.05), Bevel 군에 비해 Bioseal 군에서 더 견고한 결합조직부착을 관찰할 수 있었으며, 생물학적 폭경의 값은 두 집단 간 차이를 보이지 않은 반면에 (P>.05), 접합상피부착은 Bevel 군에서 유의하게 길었고, 결합조직부착은 Bioseal 군에서 더 길게 나타났다(P<.05). 결론: Bevel 군에 비해 Bioseal 군에서 결합조직부착은 길게 형성된 반면에 접합상피부착은 더 짧게 나타났으며, 생물학적 폭경과 초기 변연골 흡수에는 차이가 없음을 알 수 있었다. 연조직 반응의 차이가 실제 기능하중 하에서 변연골 변화에 미치는 영향에 대해서 향후 연구가 필요할 것으로 생각된다. PURPOSE. The purpose of this study was to investigate the effects of implant collar design on marginal bone change and soft tissue response by an animal test. MATERIALS AND METHODS. Two types of Implant (Neobiotech Co. Seoul, Korea) that only differs in collar design were planted on two healthy Beagle dogs. The implants were divided into two groups, the first group with a beveled collar (Bevel Group) and the second group with "S" shaped collar (Bioseal group). Standardized intraoral radiographs were used to investigate the mesio-distal change of the marginal bone. Histological analysis was done to evaluate the bucco-lingual marginal bone resorption and the soft tissue response adjacent to the implant. Mann-Whitney test was done to compare the mesio-distal marginal bone change at equivalent time for taking the radiographs and the tissue measurements between the groups. RESULTS. Radiographic and histological analysis showed that there was no difference in marginal bone change between the two groups (P>.05). Histological analysis showed Bioseal group had more rigid connective tissue attachment than the Bevel group. There was no difference in biological width (P>.05). Bevel group showed significantly longer junctional epithelium attachment and Bioseal group showed longer connective tissue attachment (P<.05). CONCLUSION. For three months there were no differences in marginal bone change between the Bevel group and the Bioseal group. As for the soft tissue adjacent to the implant, Bioseal group showed longer connective tissue attachment while showing shorter junctional epithelium attachment. There were no differences in biologic width.

의치상 직접 이장레진의 색조 안정성

강은숙,전영찬,정창모,Kang Eun-Sook,Jeon Young-Chan,Jeong Chang-Mo 대한치과보철학회 2003 대한치과보철학회지 Vol.41 No.2

Statement of problem : Direct denture reline resins tend to discolor during service in the oral environment by intrinsic and extrinsic factor. Purpose : This study was designed to evaluate the color stability of direct denture reline resins. Material and methods : Mild Rebaron(GC Corp., Japan), Meta Base M(Sun medical Co., Japan), Mild Rebaron LC(GC Corp., Japan) and as a control group, Vertex SC(Dentimex Zeist, Holland) were chosen for this study. Ten specimens of each direct denture reline resins were fabricated. Treatment methods designed for this study were the coffee staining test(7days) and the accelerated aging test(100hours). The color changes before and after treatment were measured by Tristimulous colorimeter(Yasuda seiki seisakusho, Ltd. Japan) and analyzed. Results All the direct denture reline resins subjected to the coffee staining test and the accelerated aging test showed noticible difference in color change. After coffee staining test, Meta Base M showed the highest color change followed by Vertex SC. Mild Rebaron LC and Mild Rebaron. There were no statistical differences between Meta Base M and Vertex SC and between Mild Rebaron LC and Mild Rebaron(p>0.05). After accelerated aging test. Mild Rebaron LC showed the highest color change followed by Vertex SC, Meta Base M and Mild Rebaron. There were no statistical differences only between Mild Rebaron and Mata Base M(p>0.05) but among the others, there were statistical differences(p<0.05). Conclusion : Within the limitation of this study, all the direct denture reline resins subjected to the extrinsic and intrinsic factors showed noticible difference in color change, and there were differences among manufacturers.

레진 표면처리제가 열가소성 의치상 레진과 자가중합형 이장 레진 간의 결합강도에 미치는 여향

정창모,문태성 大韓齒科器材學會 2001 대한치과재료학회지 Vol.28 No.4

The introduction of several thermoplastic polymers was intended to overcome the disadvantages of methacrylate denture base resins. Existing dentures often require denture base relines to improve the fit against the tissue bearing mucosa because of gradual changes of underlying bone structure. Chair-side reline that used autopolymerizing acrylic resin is not only convenient but inexpensive means to improve the fit and function of denture bases. However, it is not known whether the differences in chemical composition of resin surface primers affect the bonding strengths between chair-side reline resin and thermoplastic denture base resin. This study evaluated two kinds of primers(exclusive primer recommended by manufacture of thermoplastic resin and primer supplied with chair-side reline resin) to determined their effect on the bond strengths of a chair-side reline resin to two different thermoplastic denture base resins(polycarbonate and polyacetal resin) by use of a three-point transverse flexural strength test. In both polycarbonate and polyacetal resin, each exclusive resin surface primer resulted in higher bond strength than chair-side reline resin primer(p<0.05). Bond strengths of polycarbonate with chair-side reline resin were higher than those of polyacetal resin, despite the type of resin surface primer(p<0.05).

임플란트 보철물에서 임시 시멘트의 인장 결합강도에 관한 연구

정창모,조재호 부산대학교 병원 암연구소 2006 부산대병원학술지 Vol.- No.20

The purpose of this study was to evaluate tensile bond strength of temporary cements used with cemented implant-supported prostheses. Prefabricated implant abutments, height 5mm, diameter 6mm, 3-degree taper per side, with light chamfer margins were used. Ten specimens of 2-unit bridge and single crown were fabricated. The luting agents used for this study were three commercially available temporary luting agents which were Temp bond, Temp bond NE, lRM. Each luting agent was mixed according to manufacturer's instructions, and a quantity of 0.1 ml, measured by means of insulin syringe, was applied for cementation of two unit bridge. 24 hours after cementation, the retentive strengths were measured by the universal testing machine with a cross-head speed of 0.5mm/min. Then cementation procedures were repeated and specimens were thermocycled 1000 times at temperature of 5℃ and 55℃. After thermocycling, the retentive strengths were measured by same means. Then, abutment surface was sandblasted with 50㎛ aluminum oxide and the retentive strengths of single crown were measured as 2-unit bridge. The results were as follows: 1. The retentive strengths of single crown with sandblasted abutment were decreased with the sequence of IRM, Temp bond NE, Temp bond(p<0.05). 2. The retentive strengths of two unit crown with non-sandblasted abutments were decreased with the sequence of IRM, Temp bond NE, Temp bond(p<0.05). 3. The retnentive strengths of all cements were decreased after thermocyling(p<0.05). 4. All cements except Temp bond NE showed no significant difference in comparison of before and after thermocycling retentive strength of single crown with sandblasted abutment and two unit bridge with non-sandblasted abutments. 5. Especially in Temp bond NE, after thermocylcing retentive strength of single crown with sandblasted abutment is more higher than of two unit bridge with non-sandblasted abutments.