Effect of Activated Charcoal on Growth of Zingiber mioga ROSC

Choi,Seong-Kyu,Yun,Kyeong-Won,Chon,Sang-Uk,Seo,Young-Nam,Seo,Kyoung-Sun,Kwon,Byung-Sun 한국자원식물학회 2004 Plant Resources Vol.7 No.2

Activate charcoal (AC) can be utilized as a soil conditioner in agricultural crop areas. This study was conducted to investigate the effect of AC on growth and yield of Zingiber mioga ROSC as affected by different amounts of AC. The results obtained are summarized as follows. Growth characteristics including plant height and leaf length were the highest when activated charcoal added with 10-30%, suggesting that optimum amount of activated charcoal was ranged from 10 to 30%. Growth and enlargement of the root were improved by 10% AC with higher rhizome length and weight.

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.

Study on Leaf Production of Angelica acutiloba by Mulching with Polyethylene Film

Choi,Seong-Kyu,Yun,Kyeong-Won,Chon,Sang-Uk,Seo,Young-Nam,Seo,Kyoung-sun,Kwon,Byung-Sun 한국자원식물학회 2003 Plant Resources Vol.6 No.3

This study was conducted to produce effectively more leaves of Angelica acutiloba through year-round production system by using various mulching materials and polyethylene(PE) tunnel. Soil temperature by covering treatment was higher in PE mulching and PE tunnel than in rice straw mulching, especially showing the highest temperature in PE tunnel from April through May. Water content of soil was higher in PE mulching than in non-mulching. Leaf production of Angelica acutiloba through year-round production showed the highest in PE tunnel and root production in PE mulching. These results suggest that leaf production of Angelica acutiloba can be maximized through PE tunnel cultivation system.

A Study on Storage of a Major Herbal Medicine Material, Peucedani Radix

Choi,Seong-Kyu,Yun,Kyeong-Won,Kwon,Byung-Sun 한국자원식물학회 2002 Plant Resources Vol.5 No.2

To develop optimal storage method of root of Peucedani Radix, which has been grown as major cultural herbal medicine material, root of Peucedani Radix was stored for 10 months with different packing materials and sealing methods. The loss in dry weight as influenced by packing materials and sealing methods was the lowest at vacuum packing and followed by complete sealing methods with transparent polyethylene film. The ratio of root rot during the storage period was not significantly different between packing materials but was significantly different between sealing conditions. Conclusively vacuum packing and complete sealing with polyethylene film appears to be optimal for storage of Peucedani Radix.

서울·경기지역 주민의 치과위생사에 대한 인식도와 선호도 조사연구

최은미,송윤신,이선희 경복대학 2004 京福論叢 Vol.8 No.-

본 연구는 치과위생사에 대한 인식도를 알아보기 위하여 서울·경기 지역주민 200명을 대상으로 2004년 5월 11일부터 25일까지 15일간 자기기입식 방법으로 설문조사하였으며 연구결과는 다음과 같다. 1. 치과위생사의 인식에 대한 조사결과 62%가 치과위생사에 대하여 알고 있는 것으로 나타났다. 2. 치과위생사가 수행하는 업무활동 범위에 대한 복수응답 결과 치과의사보조 업무가 53.3%로 가장 많았고, 스켈링 및 방사선촬영업무 41.5%, 예방업무 24.0%, 구강보건교육 업무 20.0%, 접수 및 수납에 대한 업무 17.0%, 치료에 대한 상담 업무 12.5% 순으로 나타났다. 3. 치과위생사의 근무기관에 대한 지식을 복수응답으로 조사한 결과 치과진료실이 51.5%로 가장 많았고, 보건소 43.5%, 학교구강보건실 35.5%, 치과관련기자재 생산회사 28.0%, 제약회사 14.0%, 연구소 13.5%, 치과기공소 10.5%순으로 나타났다. 4. 치과위생사의 교육 수준에 대한 인식 조사 결과 전문대학 3년 학력에 47.0%, 전문대학 2년 학력에 27.5%, 대학교 졸업 학력에는 15.5%, 고졸학력에 4.5% 순으로 나타났다. 5. 치과위생사의 복장에 대한 선호를 조사한 결과 유니폼은 치마투피스 40.5%로 가장 많았고, 유니폼의 색상은 흰색이 33.5%로 가장 선호되었다. 또한 신발은 샌들이 48.0%로 가장 많았으며, 머리스타일은 뒤로 묶은 머리 44.0%를 가장 선호하였다. 6. 치과위생사 전문 직업 이미지 선호 조사결과 밝은 표정 62.0%, 단정함 24.5%, 세련됨과 지적임은 각각 4.5%로 나타났다. 또한 치과위생사의 이미지 향상을 위한 주관성 중 내·외적 자질로서 중요시 되어야 할 항목은 친절성 34.5%, 성실성과 책임감 32.5%, 전문적 지식인 21.5%, 인격과 소양 8.0%로 나타났다. 7. 치과위생사의 이미지 향상에 영향을 미치는 요인을 살펴본 바 전문분야에 대한 업무를 실행하는 것이 30.3%로 가장 높게 나타났으며, 치과의사와 치과위생사 상호협조적인 관계형성 22.0%, 업무의 전문화 21.5%, 치과위생사 스스로의 태도변화 13.5%, 높은 교육수준 6.5%, 기타가 6.5%로 나타났다. 8. 치과위생사의 상징에는 명찰이 44.0%로 가장 많았고, 직종명칭에 있어서는 치과위생사가 53.3%로 가장 선호되었으며, 치과간호사 35.0%, 구강보건사 6.5%, 구강관리사 1.0% 순으로 나타났다. 치과위생사의 인식을 높이기 위한 홍보방법에서는 대중매체 35.5%, 인터넷 20,5%, 구강보건교육 19% 순으로 선호하는 것으로 나타났다. 이상의 결과를 정리해 보면 치과위생사의 인식을 높이고 이미지를 향상시키는 요인으로 전문분야 업무가 가장 높게 나타났으며, 치과위생사에 대한 홍보방법은 대중매체와 인터넷 등을 통해 다각적인 치과위생사 홍보가 필요하다고 사료된다. The purpose of this study is to analyze the recognition and preference of dental hygienist. The subject of this investigation are 200 inhabitants in Seoul and Kyunggi-do and the analysis was done through questionnaires by direct interview. The results were as follows : 1. 62% of the surveyees recognize dental hygienists. 2. According to the question of a dental hygienist's duty, 53.3% of the subjects answered the assistance of dentists, 41.5% picked out scaling and taking a radiograph, and 24% recognized preventive treatment as the duty. The lowest answer is consultation with a patient on treatment, 12.5%. 3. In case of the working places of a dental hygienist, 51.5% selected dental clinic, 43.5% chose a public health center, and oral health center in school is 35.5%. 4. In an academic background of dental hygienists, 47% of the surveyees responded a dental hygienist have schooling of 3 year-course in college, 27.5% picked out 2 year-course schooling in college, and 15.5% selected college graduate. 5. The uniform of dental hygienists shows a two-piece suit(skirt) is selected by 40.5%, 33.5% answered white as the color of the uniform. Sandal shoes had the highest rate, 48% and the subjects prefer to binding hair at back. 6. 62% of the subjects answered that a dental hygienist have to be a pleasant-face as extrinsic characteristics, kindness and responsibility was selected by 34.5% and 32.5% respectively. 7. In the factors of affecting a dental hygienist's image, the performance of specialized job showed the highest rate, 30.3%, a cooperative relation with dentists and the specialization of a job showed 22% and 21.5% respectively. 8. 44% recognized name card as a symbol of dental hygienists and a dental hygienist was selected as a proper title. Dental nurse and oral health aid showed 35% and 6.5%. In the publicity method of a dental hygienist, mass communications have 35.5%, internet have 20.5%, and the education of oral health have 19%

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.

토양 과습 조건하에서 수수의 생육특성

윤민헌,권수정,주영환,최주영,우선희 忠北大學校 農業科學硏究所 2021 農業科學硏究 Vol.37 No.2

본문참고

초·중·고등학교 학생·학부모·일반교사의 보건교육 영역별 요구도와 보건교육

윤순녕,김영임,최정명,조희순,김영희,박영남,오경순,이분옥,조선녀,조소영,한선희,하영미 韓國學校保健學會 2005 韓國學校保健學會誌 Vol.18 No.1

Purpose: The purpose of this study was to identify the needs of health education in students, their parents and teachers in the elementary, middle and high schools and the current situation of health education class. Method: The subjects of this study were a total of 9450 persons including students, their parents and teachers from 279 schools throughout the country. They were selected through convenient sampling. Data were analyzed through x^(2)­test and ANOVA. Result: Students, their parents and teachers replied that 18 dimensions of health education class (DHEC) are necessary. The four DHEC - healthier life style, sex education, mental health and safety education - showed high educational needs in students, their parents, and teacher. High school students had higher educational need of 'symptom management for daily living' than elementary and middle school students. Students, their parents and teachers in elementary school had higher educational needs of 17 DHEC that those in middle and high school. The percentages of schools with health education class taught by health teachers were 99.2%, 75.5% and 66.0% respectively in elementary, middle and high schools. Health education was given mainly using physical education classes at elementary schools, and creative class hours at middle and high schools. In general, health education took 1-3 hours per week at elementary schools, and less than an hour at middle and high schools. Conclusion: Therefore, based on the results, systematic health education class should begin from elementary school to meet the need of health education in students, their parents and teachers, and further study should be made on the number of hours required and the amount of contents of 18 DHEC.

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.

주가 흐름을 이용한 효율적인 투자전략에 관한 연구

최동훈,박윤선 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-

After IMF our country's stock market showed stiffness of stock price index at 200 as result of instability of economy. But economy becoming stable, stock market started to find its figure like old days. At the end of 1999 stock price index ran over 1000. Because of this reason, people who lost their job at the time of IMF started to invest in stock with their retirement grants and other money. Less of information, individual investors bought itmes that are already at the peak of it's price and invest in items without scientific analysis. They were no game to the organization and foreign country's large fund. Therefore they lost all of their valuable fortune. Today, stock is analysed in many ways. However it's difficult for the individual investors to know when to use and what to use. In this study, we will find the same pattern of today's stock from the past, integrate analysed information into one index and forecast the tendency of the future stock. Hope to give individual investors some help for investment strategy.