A Basic Study on Leaf and Stem Production of Angelica acutiloba

Choi,Seong-Kyu,Yun,Kyeong-won,Chon,Sang-Uk,Lee,Jong-Ill,Seo,Young-Nam,Seo,Kyoung-Sun,Choi,Kyeong-Ju 한국자원식물학회 2004 Plant Resources Vol.7 No.3

This study was conducted to develop effective production system in greenhouse for leaves and stems of Angelica acutiloba by using connect pots in 2003 and 2004. Seed germination rate and plant biomass of Angelica acutiloba collected in 2004 were higher than those harvested in 2003. Germination rate of Angelica acutiloba seeds collected in 2003 was 10%, while germination rate of seeds collected in 2004 was above 90%. Especially, plant growth and yield of Angelica acutiloba grown in connect pots sized with 4×4×5cm(length×width×height) were the highest. These results indicate that leaf and stem production of Angelica acutiloba can be improved by using connect pots and optimizing seed collecting time in greenhouse.

Preference Analysis for Flower Jewelry Using Conjoint Analysis

김연희(Yeon Hee Kim),김미진(Mi Jin Kim),윤숙영(Suk Young Yun),장태원(Taeg Won Chang),최병진(Byung Jin Choi) 인간식물환경학회 2022 인간식물환경학회지 Vol.25 No.3

Background and objective: This study was conducted to determine the preferences in flower jewelry by conducting a surveyusing conjoint analysis on the perception of flower jewelry and provide basic data for development of flower jewelryproducts. Methods: For the conjoint analysis, four attributes of flower jewelry were selected. Attribute 1 was related to the mainmaterial of flower jewelry, presented in three levels: cut flowers, potted flowers, and processed flowers. Attribute 2 wasrelated to wearing area presented in five levels of wearing area: hair, neck, ear, arm (wrist) and chest (shoulder). Attribute3 was related to price provided for selling products in flower shops, presented in three levels: less than 30,000 won,50,000-70,000 won, and more than 100,000 won. Attribute 4 was related to flower jewelry wearing time, presented inthree levels: less than 6 hours, 12-24 hours, and more than 24 hours. After extracting 25 profiles through orthogonaldesign, a questionnaire survey was conducted on 402 general participants, from which the responses of 343 participantswere analyzed. Results: By attribute of flower jewelry, the respondents attached most importance to price (34.14%), followed by wearingarea (29.18%), wearing time (18.51%), and material (18.17%), proving that the general public attached most importanceto price (Pearson's R = .987, p = .000). The preference in levels by attribute was highest for processed flowers in material,less than 30,000 won in price, hair in wearing area, and 12-24 hours in wearing time. Conclusion: By making flower jewelry based on the results of the analysis, it would be possible to help increase items soldin flower shops as well as their income.

영구형 항서맥 심박조율기 환자의 장기추적관찰

최현석,이무용,최영진,최성준,김효수,손대원,오병희,이명묵,박영배,최윤식,이영우,이명용 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.5

수리된 복합레진 수복물의 전달결합강도 연구

최수영,정선와,황윤찬,김선호,윤창,오원만,황인남 大韓齒科保存學會 2002 Restorative Dentistry & Endodontics Vol.27 No.6

This study was performed to evaluate the interfacial shear bond strength of base (direct and indirect) and repair composites with aging and surface treatment methods. Direct composites resin specimens (Charisma®, Heraeus Kulzer, Germany) were aged for 5 min, 1 hour, 24 hours, and 1 week in 37℃ distilled water before surface treatment, and then divided into five groups: Group 1, grinding; Group 2, grinding and application of bonding agent; Group 3, grinding, etching with 37% phosphoric acid for 30sec, and application of bonding agent; Group 4, grinding, etching with 37% phosphoric acid for 30sec, silane treatment, and application of bonding agent; Group 5, grinding, etching with 4% hydrofluoric acid for 30sec, silane treatment, and application of bonding agent. Indirect composite resin specimens (Artglass®, Heraeus Kulzer, Germany) were aged for 1 week in 37℃ distilled water and divided into seven groups: Group 1 - Group 5, equal to Charisma specimens; Group 6, grinding, etching 37% phosphoric acid for 60sec, silane treatment, and application of bonding agent; Group 7, grinding, etching with 4% hydrofluoric acid for 60 sec, silane treatment, and application of bonding agent. The repair material(Charisma®) was then added on the center of the surface (5mm in diameter, 5mm in height). The shear bond strength was tested and the data was analyzed using one-way ANOVA and the Student-Newman-Keuls test. The following conclusions were drawn. 1. The shear bond strength of Charisma® specimens aged for 1 hour was significantly higher in Group 2 and Group 5 than in Group 1 (p<0.05), and that of Charisma® specimens aged for 1 week was significantly higher in Group 3 and Group 5 than in Group 1 (p<0.05). No significant difference was found in the bond strength of specimens aged for 5 min and 24 hours. 2. In Group 2 of the Charisma® specimens, there was significant difference between the bond strength of 24 hours and that of 1 week (p<0.05). 3. In Group 4 of the Charisma® specimens, the shear bond strength of specimens aged for 24 hours was significantly higher than the others(p<0.05). 4. There was no significant diiference between the shear bond strength of the Artglass® specimens. 5. Most of the Charisma® specimens showed cohesive fractures. Artglass® specimens that were etched with acid(phosphoric or hydrofluoric) for 30 sec showed more cohesive fractures.

적외선열화상장치를 이용한 Buchanan plugger 표면의 온도상승 분석

최성아,김선호,황윤찬,윤창,오병주,최보영,정우남,정선와,황인남,오원만 大韓齒科保存學會 2002 Restorative Dentistry & Endodontics Vol.27 No.4

This study was performed to evaluate the temperature rise on various position of the Buchanan plugger, the peak temperature of plugger's type and the temperature change by its touching time of heat control spring. The heat carrier system 'System B' (Model 1005. Analytic Technologies, USA) and the Buchanan's pluggers of F, FM, M and ML sizes are used for this study. The temperature was set to 200℃ which Dr. Buchanan's "continuous wave of condensation" technique recommended on digital display and the power level on it was set to 10. In order to apply heat on the Buchanan's pluggers, the heat control spring was touched for 1, 2, 3, 4 and 5 seconds respectively. The temperature rise on the surface of the pluggers were measured at 0.5 mm intervals from tip to 20 mm length of shank using the infraed thermography (Radiation Thermometer-IR temper, NEC San-ei Instruments, Ltd, Japan) and TH31-702 Data capture software program (NEC San-ei Instruments, Ltd, Japan). Data were analyzed using a one way ANOVA followed by Duncan's multiple range test and linear regression test. The results as follows. 1. The position at which temperature peaked was approximately at 0.5 mm to 1.5 mm far from the tip of Buchanan's pluggers (p<0.001). The temperature was constantly decreased toward the shank from the tip of it(p<0.001). 2. When the pluggers were heated over 5 seconds, the peak temperature by time of measurement revealed from 253.3±10.5℃ to 192.1±3.3℃ in a touch for 1 sec, from 218.6±5.0℃ to 179.5±4.2℃ in a touch for 2 sec, from 197.5±3.0℃ to 167.6±3.7℃ in a touch for 3 sec, from 183.7±2.5℃ to 159.8±3.6℃ in a touch for 4 sec and from 164.9±2.0℃ to 158.4±1.8℃ in a touch for 5 sec. A touch for 1 sec showed the highest peak temperature, followed by, in descending order, 2 sec, 3 sec, 4 sec. A touch for 5 sec showed the lowest peak temperature (p<0.001). 3. A each type of pluggers showed different peak temperatures. The peak temperature was the highest in F type and followed by, in descending order, M type, ML type. FM type revealed the lowest peak temerature (p<0.001). The results of this study indicated that pluggers are designed to concentrate heat at around its tip, its actual temperature dose not correlate well with the temperature which Buchanan's "continuous wave of condensation" technique recommended, and finally a quick touch of heat control spring for 1 sec reveals the highest temperature rise.

치아 순면 형태가 측색 기기를 이용한 치아 색상 측정 결과에 미치는 영향

최용진,박수정,조현구,황윤찬,오원만,박병주,황인남 대한치과보존학회 2007 Restorative Dentistry & Endodontics Vol.32 No.5

한의진단명과 진단요건의 표준화 연구 III : 3차년도 연구결과 보고

최선미,양기상,최승훈,박경모,박종현,심범상,김성우,노석선,이인선,정진홍,이진용,김달래,임형호,김윤범,박성식,송태원,김종우,이승기,최윤정,신순식 한국한의학연구원 1997 한국한의학연구원논문집 Vol.3 No.1

The diagnostic requirements were suggested and explained regarding the systems of differentiation of symptoms and signs in the third year study of standardization and unification of the terms and conditions used for diagnosis in oriental medicine. The systems were as follows : - analyzing and differentiating of epidemic febrile disease - analyzing and differentiating in accordance with the Sasang constitution medicine based on four-type recognition - differentiation of disease according to pathological changes of Chong and Ren channels - standards for diagnosis of women's disease - standards for diagnosis of children's disease - standards for diagnosis of motor and sensor disturbance (-muscle. born, joint, etc.) - standards for diagnosis of neuropsychiatric disease - standards for diagnosis of five sense organ disease - standards for diagnosis of external disease The indivisual diagnosis pattern was arranged by the diagnostic requirements in the following order : another name, notion of diagnosis pattern, index of differentiation of symptoms and signs, the main point of diagnosis, analysis of diagnosis pattern, discrimination of diagnosis pattern, prognosis, a way of curing a disease, prescription, herbs in common use, disease appearing the diagnosis pattern, documents. The standards for diagnosis of each disease was arranged by the diagnostic requirements in the following order : another name, notion of disease, the main point of diagnosis, analyzing and differentiating of disease, analysis of disease, discrimination of disease, prognosis, a way of curing and prescription of disease, disease in western medicine appearing the disease in oriental medicine, documents.

전방 도달법과 수장부 T자형 금속판 고정을 통한 원위 요골 골절의 치료

최우성,김원유,최동원,신윤학,김진영 대한골절학회 2003 대한골절학회지 Vol.16 No.2

목적 : 원위 요골 골절에 대해 전방 도달법을 이용한 관혈적 정복 및 수장부 T자형 금속판 내고정술의 방사선학적 및 임상적 결과를 분석하여 문헌 고찰과 함께 보고하고자 한다. 대상 및 방법 : 도수 정복이 되지 않았거나, 심한 분쇄 골절로 인해 도수 정복 상태가 유지되지 못했거나, 부적절한 관절면의 정복 등의 이유로 원위 전완부 전방 도달법을 이용한 관혈적 정복 및 수장부 T자형 금속판을 이용한 내고정술을 시행 후 최소 1년 이상 추시 관찰이 가능하였던 19예를 대상으로, 수술 전 후의 방사선학적인 평가와 최종 추시시의 기능적 평가를 Green과 O'Brein의 방법을 이용하여 평가하였다. 결과 : 수술 직후 모든 예에서 관절면의 해부학적 정복을 얻을 수 있었다. 방사선학적 결과에서 요골 관절면의 요골 길이는 수술 전 평균 8.8 ㎜ (±4.8 ㎜)에서 수술 후11 ㎜ (±3 ㎜)로, 요골 경사각은 평균 15˚ (±5.7˚)에서 20˚ (±5˚)로, 전방 경사는 평균 -11˚ (±13˚)에서 7˚ (±4˚)로, 척골 양성 변이는 평균 4 ㎜ (±3 ㎜)에서 0 ㎜ (±1 ㎜)로 향상되었으며, 기능적 결과에 있어서는 우수 9예, 양호 7예, 보통 2예, 불량 1예 이었다. 추시 중 초기 수상이 심하였던 1 예에서는 정복의 소실과 함께 장 무지 굴건의 파열이 초래하였다. 결론 : 원위 요골 골절의 수술적 치료에서 일부 제한된 범위에서만 적응증이 되었던 수장부 금속판 내고정술로 방사선학적 측면과 기능적인 측면에서도 만족할 만한 결과를 얻었으며, 초기 분쇄 골절이 심할 경우에는 정복의 소실을 예방하기 위하여 외고정기를 부수적으로 장착하는 것이 좋을 것으로 생각된다. Purpose : To analyze the radiologic and clinical results of open reduction and volar plating through anterior approach for distal radius fracture. Materials and Methods : We retrospectively analysed that 19 distal radius fracture, which would not be reduced by closed reduction or too comminuted to maintain reduction or articular surface incongruency, were treated by open reduction and volar plating through anterior approach. The results were evaluated by preoperative and immediate postoperative radiographics and clinical results were analysed using Green and O'Brien scoring system at final follow up. Results : All cases achieved anatomical articular surface reduction postoperatively. In terms of radiologic analysis, mean radial length (8.8 ㎜±4.8 ㎜ vs. 11 ㎜±3 ㎜), radial inclination (15˚±5.7˚ vs. 20˚±5˚), volar tilt (-11˚±13˚ vs. 7˚±4˚) and ulnar plus variant (4 ㎜±3 ㎜ vs. 0 ㎜±1 ㎜) were improved. The clinical evaluation revealed 9 excellent cases, 7 good cases, 2 fair cases and I poor case. The reduction loss and flexor pollicis longus rupture was occurred in one patient, who had severely displaced comminute fracture in initial injury. Conclusion : Using volar plating, authors gain good radiologic and clinical results. But, additional external fixation is recommended to prevent further collapse in severly comminuted fractures.

공 컨테이너를 고려한 컨테이너 내륙수송에서의 차량배치문제

윤원영,안창근,최용석 한국경영과학회 1999 한국경영과학회지 Vol.24 No.4

In the container transportation of inland depots the empty container is an important issue. The truck dispatching problem in this paper is considered under restriction about empty containers. When a full container arrives in a depot by truck, after unloading operation the full container is changed to an empty container. After loading operation an empty container is changed to a full container. We suggest an integrated approach to the problem of simultaneously managing empty truck and container movements. We would like to find the truck dispatching method minimizing empty truck movements and empty container movements. In this paper, a mixed integer programming model is developed to obtain the optimal truck dispatching in container transportation and heuristic is developed to give a good solution in much shorter time. The numerical examples are studied and the proposed heuristic is also compared with the result of numerical examples.

초속경 LMC의 시험시공을 위한 시방배합 및 현장배합 연구

윤경구,김성환,정원경,최성욱 강원대학교 부설 석재복합신소재 제품연구센터 2002 석재연 논문집 Vol.7 No.-

본 논문은 콘크리트 배합시 발생하는 과도한 기포 발생 문제점을 해결하기 위하여 최적의 소포제 종류 및 혼입률 범위를 산정하여 초속경 라텍스 개질 콘크리트 성능을 개선하는 것이다. 초속경 라텍스 개질 모르타르 실험은 4종류의 소포제 A, B, C, D와 혼입률 0, 1, 2, 3%을 주요 변수로 하여 실험을 수행하였으며, 초속경 라텍스 개질 모르타르 및 콘크리트의 특성을 분석하기 위하여 공기량 시험, 압축강도 및 휨강도 시험을 수행하였으며, 투수특성을 분석하기 위해서 염화이온 투과시험을 수행하였다. 초속경 라텍스 개질 모르타르의 공기량시험 결과 소포제 종류에 상관없이 소포제 혼입률 1%이상 첨가시 공기량은 50%이상 감소하였다. 또한, 소포제 첨가에 의한 기포발생량 감소에 의해서 압축강도의 증진을 이루었다. 초속경 라텍스 개질 콘크리트 실험은 모르타르 실험에서 우수한 특성을 나타낸 A, C 소포제로 선정하여 실험을 수행하였다. 초속경 라텍스 개질 콘크리트의 강도 특성에서는 A 소포제 혼입률 1%에서 압축강도 235 kgf/㎠, 휨강도는 조기 교통개방에 요구되는 휨강도 기준 45kgf/㎠를 초과하는 49kgf/㎠를 나타내었다. 초속경 라텍스 개질 콘크리트의 투수성을 분석하기 위한 염화이온투과시험에서 A 소포제는 각각 혼입률 1%, 2%에서 가장 우수한 투수저항성을 나타내어 재령 28일에서는 통과전하량이 100쿨롱 이하를 나타내어 불투수성을 나타내었다. The purpose of this study was to remove the excessive air foaming which was produced in mixing the RSLMC(latex-modified concrete with rapid-setting cement) by choosing the best antifoam agent type and the optimized quantity for performance improved RSLMC. A series of RSLMM(latex-modified mortar with rapid-setting cement) experiments were carried out as the basic for RSLMC with the main experimental variables such as antifiamer types (A, B, C, D), antifoamer contents (0, 1, 2, 3%), and latex contents (15%). A series of RSLMC experiments, also, were carried out with the similar main experimental variables but with the selected antifoamer types (A, C). Air content test and compressive, flexural tests were carried out to measure the improved properties of RSLMM and RSLMC. Chloride ion permeability test was carried out to estimate water permeability resistance. The results of RSLMM showed that the decrease of 50% air content was obtained by admixturing a antifoam agent by 1%. Two kinds and the optimized quantities of antifoam agent were selected for using in RSLMC. The results of RELMC were obtained at a latex content of 15% and an antifoam agent quantity of 1% with antifoamer A type. The compressive strength and flexural strength at 3 hours after RSLMC placement were 235 kgf/㎠ and 49kgf/㎠, respectively, which exceeded the flexural strength criterion of 45 kgf/㎠ in order to open the RSLMC placed to traffic. The rapid chloride permeability test was used to evaluate the permeability of RSLMC. The optimited quantity of antifoamer A and C type were 1% and 2% for the permeability test, respectively. The chloride permeability using A and C antifoamer at 28 days were below 100 coulombs, which was the permeability rating of negligible according to ASTM.