Holmium:YAG laser를 이용한 요관경하쇄석술의 초기 경험 : 기존의 쇄석술과의 결과 비교

구경완,노용수,김홍섭,양상국,나공찬 건국대학교 의과학연구소 2003 건국의과학학술지 Vol.13 No.-

Purpose: Holmium:YAG lasertripsy for the 33 patients with lower ureteral calculi compared the outcome with other results using Lithoclast and ultrasonic lithotripsy. Materials and Methods: Thirty-three patients with symptomatic urinary calculi underwent Holmium:YAG lasertripsy from March 1999 to December 2000. Twelve patients were treated with Ultrasonic lithotripsy and twenty-one patients with Lithoclast lithotripsy from April 1997 to October 1999. All calculi of the above patients were located in their lower ureters. The size of ureter stones was ranged from 3.5 mm to 12 mm (mean 6.54 mm). Results: The age of the patients ranged was from 19 to 62 years (me~n 35.7 years). After a single ureteroscopic lasertripsy calculi were conlpletely cleared in 83 % of the cases for the patients with lower ureter calculi. The immediate complications of lasertripsy were gross hematuria, fever, and flank pain. However in the long term follow up (up to 3 months after the procedures) there were no further complications, such as, vesicoureteral reflux or ureteral stricture. In other two lithotripsies Lithoclast and Ultrasonic lithotripsy accomplished calculi were completely cleared in 71 % and 74 % of cases respectively. But Holmium:Y AG lasertripsy is cleared in 94 % effectiveness. Holmium:Y AG lasertripsy is more effective than two other methods compared by stratified analysis that unmasking from confounding factors such as impacted situation. Conclusions: Lasertripsy with Holmium:Y AG laser is considered effective and safe procedure for the lower urinary calculi lithotripsy (Ultrasonic, Lithoclast).

N-Substituted anthranilate 유도체의 합성

구분옥,이은영,최경숙 曉星女子大學校 藥學大學 學生會 1990 曉星藥誌 Vol.5 No.-

In order to search of new drug effect, ten N-Substituted anthranilate derivatives were synthesized. Methyl anthranilate was synthesized by the reaction of methanol in the presence of conc. sulfuric acid and 5-hydroxyethylanthranilate was synthesized by the reac-tion of ethanol saturated with hydrogen chloride gas. According to Schotten-Baumann method, these acid amides could be synthesized by the reaction of methylanthranilate or 5-hydroxyethylanthranilate with acid chloride (CICO-?? : x=H, p-chloro, o-chloro, p-nitro, m-nitro)in the presence of 10% sodium hydroxide solution. The structure of these compounds was identified by IR and NMR Spectra.

심부전증에서 Doppler Tissue Image를 이용한 비동시성 심실수축(Myocardial Dyssynchronicity)의 측정 : 심전도와비교 Comparison with EKG

구소영,조구영,한성우,최승혁,박우정,두영철,홍경순,오동진,이영 대한순환기학회 2004 Korean Circulation Journal Vol.34 No.4

土壤栽培에 있어서 질소 및 칼리의 施肥水準이 오이의 生育, 收量 및 無機成分吸收에 미치는 影響

具禹書,權成煥,鄭淳宰,鄭景泰 東亞大學校 大學院 1993 大學院論文集 Vol.18 No.-

Cucumbers were grown at 5 levels of Potassium and Nitrogen to stuudy the effect of N,k concentration on growth, yield and content of mineral elements. 1. Growth and yields were increased in N treatment with 16g per plant, and wrer increase in K treatment with 16me per liter. 2. The content of mineral elements of in leaves were higher N teatment than K treatment in content of T-N and Mg, and content of P was high in K treatment. 3. The content of mineral of petiole, fruit and Xyleme sap. were detected. The content in Xyleme sap, was most in N treatment all content expect of NO₃-N. NO₃-N and K were contented a lot in petiole Ca was contented a little in fruit. In K treatment, No-N and K were contented a lot in petiole, and the others were contented in Xyleme sap. Ca was contented a little in fruit. 4. The content of mineral in soil was detected in N and K treatment content of mineral was a little after than before treatment P while in case of P content was higher before treatment 5. absorption of water in cucumber plants was increased in N treatment with 8g per plants, while decreased in the K treatment 8 me per plant. The contents of chlorophyll was increased as the levels of Nitrogen was increased in N treatment, however, decreased on young leave as the level of Poassium was incresed in K treatment.

쓰가루 單一品種 果園을 위한 꽃사과 受粉樹 利用에 관한 硏究

沈慶久,河有美,金健澔,朴永洙 成均館大學校 科學技術硏究所 1993 論文集 Vol.44 No.1

Crabapples potentially useful as pollenizers in single-cultivar 'Tsugaru' orchard was evaluated for their flowering times and pollen germination(%). Their efficiency in the setting of fruits following controlled pollinations on 'Tsugaru' at private orchard in Sang ju was also examined. The obtained results are as follows, (1) Flowering times of Malus spp. 'Almey' and Malus spp. `Pioneer X' were from April 30 to May 1 and had the same flowering time of 'Tsugaru'. (2) Pollen germination(%) of crabapples using as pollenizers of 'Tsugaru' was over 90% of Malus spp. 'Almey' and Malus spp. 'Pioneer X' respectively. (3) Percentages of fruit setting in 'Tsugaru' crossed with Malus spp. 'Almey' and with 'Pioneer X' showed 99.3% respectively. (4) There was no statistically significant difference in the fruit skin color, fruit diameter (cm), fruit. height (cm), fruitt index, fruit weight(g), soluble solid(˚BX), acidity(pH), fruit hardness (kg/㎠), and seed numbers of 'Tsugaru' crossed with 'Pioneer X' and 'Almey'. (5) On the bases of flowering times, pollen germination, efficient fruit set, promising of fruit skin solour, and no statistically significant difference in fruit quality, Malus spp. 'Almey' and 'Pioneer X' are promising as pollenizers for single-cultivar 'Tsugaru' orchard.

군매장의 효율적 POS시스템 운영방안에 관한 실증적 연구 : 공군과 해군의 매장관리 시스템을 중심으로

양경훈,강석구,송병희 중앙대학교 산업경영연구소 1999 산업경영연구 Vol.8 No.2

POS 시스템은 광범위한 적용대상을 가지고 있다. POS 시스템은 편의점이나 백화점과 같은 유통업체로부터 활용되기 시작하였으나 판매정보 이외에 기존 수집 자료를 기초로 상품정보와 재고관리, 수발주에 따른 물류관리, 고객관리, 인사관리에 이르기까지 종합적인 정보를 제공하는 시스템으로 발전되어 나감으로써 제조업체뿐만 아니라 공공기관에 까지 활용되고 있으며 기업의 통합적인 물류관리를 위하여 필수불가결한 시스템으로 자리잡고 있다. 본 연구는 군에서의 효율적인 POS 시스템의 운영방안을 살펴보려 한다. 영리기업이 POS 시스템을 활용하여 정보를 신속, 정확하게 처리함으로써 고객 만족 또는 이윤추구목적은 달성할 수 있었다면 군도 특정영역에서 조직 목표를 달성하는데 POS 시스템을 유용하게 유효한 성과를 거둘 수 있을 것으로 기대된다. POS system was initially introduced to some leading circulation businesses such as CVS or department stores. Since then POS system has been developing into an integral information system, enlarging its range of application - from basic data collection to product information; inventory management; customer service; and personnel management. As circulation companies struggle to get more competitive edge, the number of companies that make strategic use of the secured information is soaring. In pace with the era of information revolution, military organizations have introduced POS system to some daily sales process at BX shops. Since the POS system will surely increase work efficiency, my suggestion, based on the survey, is that the navy should adopt POS system in its BX management. For better results to its full potential, POS system should be designed and implemented in consideration of various demands from relevant departments. Lastly, some measures should be arranged in order to maximize its benefits.

다래 密閉揷木時 發根促進劑 處理와 揷木床 溫度差異가 發根에 미치는 影響

沈慶久,安永熙,黃重樂,李基誼 成均館大學校 科學技術硏究所 1984 論文集 Vol.35 No.1

Bowers(Actinidia arguta planch) grow widely in the mountains of Korea. This deciduous vine is now considered worth while to exploit as an outstanding edible landscape plant. The present study was carried out to find out the suitable propagation method of bowers For this experiment, cuttings were taken from the one-year-old stem. Rooting beds in a green house were filled with vermiculite and installed with the electric wires for heating under the beds. Rooting bed were closed with polyethylene film to maintain temperature and humidity. The results obtained are summarized as follows. The rooting percentage and rootlet number of male plant are higher than that of female plant. The male and female plants cuttings tended to have the largest root system in the 20±2℃ cutting bed. Cuttings treated with IBA 500ppm 30 secdip rooted better and larger root systems than other treatments. The rooting percentage, length of root and rootlet number in the 20±2℃ bed temperature was higher than those in the 15±2℃.

2-프로핀일 고리 카보네이트의 Pd(0) 촉매를 이용한 가수소분해반응연구 : (Z)-호모알릴알콜과 2-호모프로핀일 알코올의 합성 Catalyzed Hydrogenolysis of Prop-2-ynylic Cyclic Carbonates

강석구,박동철,정재욱,정경윤 성균관대학교 기초과학연구소 1994 論文集 Vol.45 No.1

삼중 결합을 갖고 있는 2-프로핀일 고리카보네이틀 Pd(acac)_2와 nBu_3P을 촉매로 하여 포름산 암모늄염을 사용한 탈카르복실화-가수소분해반응을 이용해서 (Z)-호모알릴 알콜과 2-호모프로핀일 알콜을 반응조건에 따라 각각 합성하였다. 그리고 분자끝 2-프로핀일 고리카보네이트의 가수소분해반응을 이용하여 호모알릴 알콜을 합성하였다. (2S. 4Z)-1-(p-메톡시벤질옥시)-2-히드록시-4-헵틴 2b를 광학활성 중간체로 사용하여 pyralid 나방 Aphomia gularis의 male 성페르몬을 합성하였다. The decarboxylation-hydrogenolysis of prof-2-ynylic cyclic carbonates which have an internal acetylenic bond with ammonium formate in the presence of a catalytic amount of [Pd (acac)_2] and nBu_3P afforded(Z)-homoallylic alcohols or homoprop-2-ynylic alcohols dependin on the reaction conditions. however, hydrogenolysis of terminal prop-2-ynylic cyclic carbonates gave homoallylic aicohols; using (2S, 4Z)-1-(p-Methoxybenzyloxy)-2-hydroxy-4-heptyne 2b as a chiral synthon, the male sex pheronome of the pyralid moth Aphomia gularis has been synthesized.

CD-ROM 컴퓨터 기술을 이용한 조경식물 영상 정보자료 구축

심경구,서병기 韓國植物ㆍ人間ㆍ環境學會 1999 인간식물환경학회지 Vol.2 No.1

The purpose of this study is to construct landscape plants image data using CD-ROM computer technology Current landscape plants explanations are mainly focused on detail tree shape, but this study is composed of landscape values, uses, and cultural informations for landscape planting design. The data for using woody landscape plants in the central district of Korea are including 188 plants, 94 plants in 'Monthly Book of Price Specified by the Government', 42 plants in 'Landscape Tree Price Information'. The conclusions of this study are as followed. 1. The woody landscape plants image data in 'Korea Tree CD-ROM' are composed of 4 items such as tree shape image data 90 plants, flowering image data 140 plants, mature fault image data 66 plants, autumn tints 58 plants. 2. The CD-ROM can be helped the user manage many information of woody landscape plants because the CD-ROM has the latest information and can easily update when any changes are made in tree information. 3. Using woody landscape plant image data, this study presented the sample of 2D planting design simulation with computer graphic program. 4. The result of this study might contribute to the development of new woody landscape plants in construction of new practicable tree data that landscape planting design applied.

倒産豫測模型比較에 관한 實證的 硏究

金九培,金京烈 全北大學校 1993 論文集 Vol.35 No.-

This study is to compare discriminant model with logit model to incremental predictive power of bankrupt and nonbankrupt firms. For these purpose, this study follows the procedures described below. 1. For a sample of bankrupt companies, 25 firms are selected among failed firms in Korea between 1990 and 1992. And as nonbankrupt companies sample, the same number of firms of similar size in total asset are selected at random in the same industry. 2. Selected independent variables are 6 financial ratios. 3. Discriminant and logit analysis are used to classify failed and nonfailed firms. Results of this study suggest that logit analysis is superior to discriminant analysis in the theoretical sides. Also, in the classifying correct, that inferior to this.