우리나라 社會奉仕命令制度의 改善方向

成榮模 忠南大學校 法學硏究所 1998 法學硏究 Vol.9 No.1

合成糊料의 糊付效果에 關한 硏究

牟相榮 충남대학교 대학원 1976 論文集 Vol.6 No.-

This study has been investigated on the sizing effect of synthetic size and esterified starch on the fibres, according to the elongation, tensile strength, stiffness and crease recovery of sized fibres. The mechanical properties of the fibres are as follows, 1) The rate of elongation of sized wool ana cotton are decreased, but the others are gradually increased, and sized polyester is markedly increased. 2) The curve of the tensile strength of each fibre shows almost flat. 3) The stiffness of all sized fibres is markdly increased according to size, but regardless of a kind of fibre. 4) The crease recovery of wool and polyester sized by PVA and CMC is predominant in the aspect of the effect on. 5) A little difference between esterified starch and synthetic size on fibres shows in the aspect of effects on, for that reason, esterified starch can be appropriately used as a size on synthetic fibre as well as synthetic size.

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.

Polyethylene terephthalate 纖維의 防汚加工에 關한 硏究

牟相榮,孟琦錫,李文洙 충남대학교 공업교육연구소 1981 論文集 Vol.4 No.1

Soil resistant properties imparted to polyethylene terephthalate fabric by silicone and fluorochemical resin treatment have been investigated. The percent soiling and the stiffness of PET fabric were measured by color and color difference meter and handle-o-meter in different concentration of resin emulsions. The resin thicknesses on the PET fabric were calculated in the different resin concentrations. Optimum concentrations of silicone resin emulsion and fluorochemical resin emulsion were 3% o. w. f. and 1% o. w. f. respectively. The fluorochemical resin emulsion was more effective than the silicone resin emulsion for wet and oil stain resistant. Thickness of coated resin wee favorable at above 3% silicone resin emulsions, however the thickness treated with 0.5% resin emulsion was not significantly different from those of the 2% treating in case of fluorochemical resin emulsions. Surfactants such as dispersing agent, softner and antistatic agent added to the emulsions proved to be ineffective but antistatic agent did have some effect at concentrations below 0.5% in case of dry soiling.

電子監視制度

成榮模 忠南大學校 法學硏究所 1997 法學硏究 Vol.8 No.1

플루오르 화합물을 플라즈마 처리한 PET 직물의 방수성 및 투습성

모상영,김태년 忠南大學校 産業技術硏究所 1996 산업기술연구논문집 Vol.11 No.2

Glow discharge plasmas have been arisen much interests in the field of surface modification of polymers. There are much activated species in glow discharge plasma such as electrons(average energy:10eV), radicals and ultra-violet rays(∼40eV)etc. Those of activated energies can be used properly to modify the polymer surfaces. Recently, the demands on fabric which poses a water repellent, proofing and a moisture transpirate characters have been more and more increased. General preparing techniques of those materials are known as (1) surface modification of high bulky and high density fabrics, (2) surface coating with urethane or fluoro resins, (3) lamination with porous films. Among those methods the (1) is superior at moisture transpiration than (2) or (3), but is inferior at water proofing than (2) or (3). If, however, we could improve the water repellency and proofing characters, the process (1) would be the most preferable to other methods. In this work, we have treated PET fabric with each of CF₄, C₂F6, SF 6 and CF₃CF=CF₂plasmas to develop high functional fabric which preserves a moisture transpiration and water proofing natures. Modified properties were evaluated by breakthrough water pressure and water vapor permeation rate. The change of surface morphology was observed by SEM. Results obtained are (1) The moisture transpiration of CF₄-treated fabric was superior as much as untreated fabric, and those of C₂F6-treated, SF6-treated fabrics were inferior in 1∼3%, and that of C₃F6-treated fabric was the most inferior in 15%. (2) At very low pressure treatment condition, it tend to be more hydrophilic except C₃F6-treated fabric. (3) The best treatment condition were 0.09 torr, 90∼120 seconds in CF₄, 0.05 torr, 60∼90 seconds in C₂F6, 0.1 torr, 90 seconds in SF6 and 01 torr, 60 seconds in C₃F6 respectively.

現行 死刑制度의 改善方向

成榮模 忠南大學校 法學硏究所 1994 法學硏究 Vol.5 No.1

베이커리 제품소비함수 추정

모수원,정승태,김영숙 목포대학교 기업경영연구소 2000 企業經營硏究 Vol.4 No.1

The aim of this paper is to model and estimate the consumption demand for bread and cakes. We employ Engle-Granger two-step cointegration technique techique, Johansen's multivariate cointegration methodology and GPH test, because the model must be stationary to get the accurate predicted values. The empirical results show that our model is stationary as well as mean -reverting. This paper also applies impulse-response functions, variance decompositions and historical decompositions to our model, indicating that the consumption demands for bread and cakes are enogenous to as well as predictable with the income variable.

중장비 안전사고에 관한 연구(Ⅰ)

박성지,이영내,고재모,이기태,한백희 內務部 國立科學搜査硏究所 2002 國立 科學 搜査 硏究所 年報 Vol.34 No.-

금피복된 임플란트 보철용 유지나사의 예비하중 및 풀림회전력에 관한 연구

정창모,황희성,전영찬,최설희 大韓齒科器材學會 2000 대한치과재료학회지 Vol.27 No.3

The purpose of this study was to compare the preload and the removal torque produced when using gold coated prosthetic retaining screws (Gold-Tite retaining screws) and non-coated screws(gold screws) repeatedly and to evaluate effects of a thin pure gold coating on screw stability. Following connection of the conical abutment to implant fixture using 20 Ncm of torque applied by a torque gauge, fastened the strain-gauged gold cylinder to conical abutment with gold screw, Gold-Tite retaining screw using 10Ncm. Then, preloads and removal torques were measured, screws tightened and loosened 8 times repeatedly. All experiments were performed under dry and wet condition. The results obtained were summarized as follows : 1. For gold screw group, no significant differences existed in the preload and the removal torque according to trials in both conditions(p>0.05). 2. For Gold-Tite retaining screw group, no significant differences existed in the preload according to trials in both conditions(p>0.05). However, the removal torque decreased at the second trial and incresed, after then(p<0.05). 3. In comparison of preloads according to trials, the preload in dry condition was greater than in wet condition only for Gold-Tite retaining screw group after the fourth trial(p<0.05). However, no significant differences were found between gold screw group and Gold-Tite retaining screw group(p>0.05). 4. In comparison of removal torque according to trials, the removal torque of gold screw group was greater than of Gold-Tite retaining screw group in dry condition at the second, third trial(p<0.05). At the other trials, no significant differences were found among the experimental groups(p>0.05).