벼 乾畓直播栽培에서 Propyl Dihydro Jasmonate 種子處理에 따른 出芽 및 生育促進效果

박종현,이철원,송범헌,손석용 忠北大學校 農業科學硏究所 2003 農業科學硏究 Vol.20 No.-

This study was conducted to examine the effects of Propyl Dihydro Jasmonate on the growth responses, chilling tolerance and yields on the direct seeding on dry paddy at seedling stage in two rice cultivars The emergence rate of two rice cultivars (Seoan byeo and Dasanbyeo) were increased more by the treatment of 0.05μM PDJ than those of others. Higher concentration of PDJ was found to be inhibitory for germination. Number of emergence of cultivar Seoanbyeo was higher in 0.05μM PDJ treatment for 24hour as compared to 12hour, whereas, no significant difference was observed in case of cultivar Dasanbyeo Plant height and number of tillers of two rice cultivars were increased by the treatment of 0.05μM PDJ for 24 hour Rice yield of the tested cultivars were increased high in the PDJ treatment plot due to increment of the panicle number in the dry seesed paddy field.

Novolak resine의 合成과 熱特性에 關한 硏究

박종헌,최승재 三陟大學校 1998 論文集 Vol.31 No.2

Novolak resin was Synthesized and acid catalyzed condensation of phenol with 37% from aldehyde and treated with the mixture of methanol and water as Solvents in order to get improved thermal properties of novolak. The initial decomposition temperature(??) of novolaks was observed in the range of 100.39℃. The glass transition temperature(??)of novolaks was varied on the change of mixing ratio of H₂O/MeOH.

유동성 복합 레진을 적용한 예방적 레진 수복물의 미세 누출 양상에 관한 비교 연구

박헌정,김종수,김용기 대한소아치과학회 2000 大韓小兒齒科學會誌 Vol.27 No.3

성인에 비해 치료를 견딜 수 있는 시간이 상대적으로 짧은 소아 환자에 있어 시술 시간은 치료 결과의 중요한 변수로 작용하게 된다. 최근 소개된 유동성 복합 레진을 예방적 레진 수복술에 사용하게 될 경우 전색재 도포 과정을 생략할 수 있어 시술 시간의 단축, 편의성 등의 장점이 인정되나 미세누출 등에 관한 연구 결과는 미흡한 실정이다. 본 연구의 목적은 최근 소개된 유동성 복합 레진을 사용한 예방적 레진 수복물과 기존의 복합 레진과 전색재를 사용한 예방적 레진 수복물 간의 미세누출 및 기포발생 정도를 비교하고자 함이었다. 교합면이 건전한 상악 소구치 60개를 대상으로 고속용 1/2 round bur를 이용하여 교합면 열구를 따라 길이3.0 ×폭0.7 ×깊이2.0mm의 Ⅰ급 와동을 형성하고 각 군 당 20개씩 무작위로 시편을 배분하고, 제조자의 지침에 따라 본딩재인 Scotchbond Multipurpose □ (3M dental product, U.S.A.)를 적용하고 유동성 복합 레진 수복군인 Ⅰ,Ⅱ군에는 각각 Revolution □ (Kerr, U.S.A.)과 Arabesk Flow(VOCO, Germany), 대조군인 Ⅲ군(통상적 예방적 레진 수복군)에는 Restorative Z-100 □ (3M dental product, U.S.A.)과 Concise □ (3M dental product, U.S.A.)를 제조자의 지시에 따라 충전, 적용하였다. 3,000회의 열 순환 및 색소 침투 후 시편을 절단하여 컴퓨터에 영상을 입력하고 색소의 침투 길이 및 침투 비율을 계산하고 미세누출 평가 기준을 이용하여 각 시편에 대한 미세누출 정도를 평가하였다. 또한, 각 군별로 특징적으로 나타난 기포의 발생 양상을 별도의 평가기준에 따라 평가하였다. 미세누출은 수복재와 법랑질의 계면부에 국한되어 관찰되었고, 와동 내부까지 침투된 경우는 없었으며, 유동성 복합레진 수복군(Ⅰ, Ⅱ군)이 기존의 예방적 레진 수복군(Ⅲ군)에 비해 낮은 미세 누출 정도를 나타냈다(p〈0.05). 미세누출 결과 외에, 대부분의 충전물 내에서 다양한 형태의 기포가 발견되었으며, Ⅰ, Ⅱ군 표본에서 Ⅲ군에 비해 크기가 큰 기포가 더욱 많이 관찰되었다. The purpose of this study was to compare the microleakage pattern of preventive resin restoration using conventional composite resin and allowable composite resin that recently developed. 60 sound premolar teeth were allocated to three groups. Flowable composite resin was used for the experimental groups(GroupⅠ,Ⅱ) and conventional resin for the control group(Group Ⅲ) . After composite fi11ing and sealant application. all teeth were thermocycled and evaluated for microleakage under light microscope. Additionally, a variety of voids formed inside restorations were also evaluated. Data were analyzed statistically using Kruskal-Wallis test and/or Mann-Whitney U-test. The results of the present study were as fo11ows . 1.Microleakage found in all samples was only limited to the interface o( restoration margin and enamel. 2.The flowable composite resin groups (GroupⅠ, Ⅱ) generally showed less micoleakage than control groups (conventional preventive resin restoration) (p〈0.05) 3.Various types of voids were observed in most specimens. Especially, there was a tendency for more and larger voids to be found in group Ⅰ, Ⅱ than group Ⅲ (p〈0.05).

외과적 보조의 급속상악확장술 : 치험 5예 REPORT OF 5 CASES

박충열,이용욱,송종운,김영운,박홍주,오희균,유선열,이기현,황현식 대한악안면성형재건외과학회 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.1

Five adults (3 cases of bilateral posterior crossbite, 2 cases of unilateral posterior crossbite) with intermaxillary discrepancy of over 5㎜ due to maxillary transverse deficiency were treated by surgically assisted rapid maxillary expansion (SARME). Bilateral maxillary horizontal osteotomies, osteotomies of pterygomaxillary junction and anterior lateral nasal wall, ans anterior palatal osteotomy were performed in 4 cases, and unilateral osteotomies in 1case, followed by palatal expansion with tooth-borne orthopedic applicance. No significant complication was observed. The mean palatal expansion was 7.2㎜ (5.8∼10.0㎜) in the maxillary first molar region. During the mean follow-up period of 4 years (5 months∼8 years 7 months), no recurrence of crossbite was observed in all cases. The SARME seemed to be a simple, stable, and reliable procedure for achieving a permanent increase of over 5㎜ in skeletal maxillary transverse width of adults.

PVDF 압전소자 활용 전기 에너지 수집

"이수헌", "여인권", "정재성", "박종대" 배재대학교 자연과학연구소 2015 自然科學論文集 Vol.26 No.1

PVDF(Polyvinylidene Fluoride)를 사용하여 진동에너지를 전기적 에너지로 수집할 수 있는 소형 발전시스템을 개발하였다. 개발된 시스템은 온도, 진동, 압력 등의 데이터를 수집하고 무선으로 전송하는 센서 네트워크의 전원으로 사용될 수 있다. We have developed a small electrical energy harvesting system using PVDF(Polyvinylidene Fluoride) which can convert vibrational energy into electrical energy. The developed system can be used as a power source for sensor network which acquire data such as temperature, vibration, pressure, etc and transmit data to a data center

종업원들의 멘토관계와 조직유효성에 관한 연구

박종헌,김재붕 大田産業大學校 1996 한밭대학교 논문집 Vol.13 No.0201

In recent years, a scholars and a managers in business have taken a more interest on the mentorship in organizations. Mentorship is one of the way to promote mutually beneficial relationship between the individual and the organization and have been recognized as one of the important managerial means to improve the organizational effectiveness such as organizational commitment, job satisfaction, job involvement. A mentor is a trusted and experienced employee who serves as a role model, provides support, direction, and feedback to the young employee on the variety problems in organization, and increase the visibility of the protege to decision-makers in the organization who may influence career opportunities etc. As the mentorship give rise to attention on individual or organizational problems, it may be an effective managerial method to improve organizational commitment, job satisfaction, job involvement etc. The purpose of this study is to examine a theory on mentorship and organizational effectiveness, and the organizational benefits of mentorship.

生態系 保全型 河川으로의 漢江整備

朴鍾和,趙龍顯 서울대학교 환경대학원 부설 환경계획연구소 1995 터전 Vol.3 No.-

자궁경부에 발생한 배아성 횡문근육종 2예

박정열,조준식,김대연,이동헌,김종혁,김용만,김영탁,목정은,남주현 대한부인종양 콜포스코피학회 2002 Journal of Gynecologic Oncology Vol.13 No.3

횡문근육종은 소아와 청소년기에 가장 흔한 연부조직 육종이다. 발생 부위는 일반적으로 두부 및 경부, 그 다음으로 비뇨생식계이다 조직학적으로 배아성 횡문근육종, 국화상 육종, 폐포성 횡문근육종, 다형성 횡문근육종으로 나누어진다. 횡문근육종의 약 20%가 비뇨생식기에서 발생하고, 50% 이상이 배아성 횡문근육종이다. 여성 생식기의 배아성 횡문근육종은 드문 악성 종양으로,주로 유소아의 질에서 발생하며, 자궁경부에서 발생하는 횡문근육종은 청소년기에 흔하고, 질에서 기원하는 횡문근육종이 자궁경부에 기원하는 경우보다 5배 정도 많다. 폐경기여성에서는 자궁체부에서 가장 흔히 발생한다. 비뇨생식기의 횡문근육종의 치료는 과거에는 골반장기 적출술만으로 치료를 시도하였으나. 서서히 다중 항암화학요법, 방사선요법, 근치적 절제술을 포함한 병합요법으로 바뀌어가고 있으며, 이에 따라 생존율이 현저하게 향상되었다. 이에 저자들은 최근 본원 산부인과에서 자궁경부에 발생한 배아성 횡문근육종 2예를 경험하였기에 문헌 고찰과 아울러 보고하는 바이다. Rhabdomyosarcoma is the most common soft tissue sarcoma in childhood and young adult. Genitourinary tract is the econd most common site of rhabdomyosarcoma. Rhabdomyosarcoma can be classified into one of four major types; embryonal, alveolar, pleomorphic and undifferentiated. Embryonal rhabdomyosarcoma of the female genital tract is rare malignant tumor and usually occurs during childhood in the vagina. In rare cases, rhabdomyosarcoma can originate in the uterine cervix, with a peak incidence in the second decade. Recently we have experienced two cases of embryonal rhabdomyosarcoma of the uterine cervix. These cases are presented with a brief review of the literature.

大邱地域 降雨量 豫測을 爲한 Box-Jenkins 模型

朴鍾憲 嶺南大學校 環境問題硏究所 1990 環境硏究 Vol.9 No.2

The Box-Jenkins methodology is a powerful approach to the solution of many forecasting problems. It can provide extremely accurate forecasts of time series, and offers a formal, structured approach to model building and analysis. In this paper a seasonal MA model is developed to forecast monthly precipitation in Daegu region. The statistical package RATS is employed as a development tool with personal computer and the model building procedures are explained in detail. As a result the forecasted monthly precipitation values are presented for the years of 1989 and 1990.

고량강의 항염증 작용에 대한 연구

박히준,이제현,김수영,심범상,구헌종,강전모,최일환,이재동,김남재,이지숙,임사비나 EAST-WEST MEDICAL RESEARCH INSTITUTE KYUNG HEE UNI 2005 東西醫學硏究所 論文集 Vol.2005 No.-

Objective : The use of herbal therapy is becoming an increasingly attractive approach for the treatment of various inflammatory disorders. The Alpiniae officinari Rhizoma is popular in Aisa as a traditional herbal medicine. Alpiniae officinari Rhizoma is a species of the ginger family(Zingiberacease). Method : This study was performed to investigate the anti-inflammatory effect of Alpiniae officinari Rhizoma extract by the methods of "carrageenan induced paw edema" and "Lipopolysaccharide-induced inflammatory mediators in mouse macrophage RAW 264.7 cells". Result : We suggest that Alpiniae officinari Rhizoma extract decreased paw volume induced by plantar injection of carrageenan. Also Alpiniae officinari Rhizoma extract inhibited nitric oxide, prostaglandin E₂production and induced nitric oxide synthase, cyclooxygenase-2 protein expression in Mouse macrophage RAW 264.7 cells stimulated with lipopolysaccharide. Conclusion : This study shows that Alpiniae officinari Rhizoma extract seems to have anti-inflammatory effect by inhibition of nitric oxide, prostaglandin E_(2) production and nitric oxide synthase, cyclooxygenase-2 protein expression.