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.

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.

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

낙상홍(Ilex serrata)의 繁殖에 관한 硏究

沈慶久,徐炳基,朴相獻 成均館大學校 科學技術硏究所 1988 論文集 Vol.39 No.1

本 硏究는 열매의 觀賞價値가 우수한 낙상홍의 適切한 繁殖方法을 究明하고자 種子播種을 비롯하여 揷木時期에 따라서 多樣한 濃度의 發根促進物質處理를 行하였던 바, 그 結果를 要約하면 다음과 같다. 1. 低溫層積時期에 따른 發芽率의 差異는 無處理에서 23.8%가 發芽하였으나 90日間의 처리는 85%의 發芽率을 나타냄으로써 種子의 冷混積效果가 있었다. 2. 綠枝揷木時 揷木時期가 1987年 6月 22日에 揷木한 揷穗에서 암그루의 경우 IBA 500ppm 浸漬處理가 發根率 80%, 發根數 5.94% 및 根長 4.95cm로 發根成績이 良好하였으며 숫그루는 1987年 6月 15日에 揷木한 揷穗에서 IBA 500ppm 處理에서 發根率이 70%를 비롯하여 發根數 9.01, 根長 10.00cm로서 發根促進效果를 나타내었다. 3. 일반적으로 숫그루의 發根狀態는 암그루에 비해 다소 높은 것으로 알려져 있으나 1987년 6월 22일에 揷木한 綠枝揷에서 암그루는 숫그루에 比해서 良好한 發根效果를 나타내었다. The objectives of this studs were investigation of the suitable propagation methods, the comparison of the influence of period for softwood cuttings of llex serrata and the determination of effectiveness of various rooting Promotion treatments. The results obtained were as follows. 1. The germination rate 85% when the Period of stratification was 90 days, while the germination rate 23.8% when the Period of stratification was 0 day. 2. The rooting rate of the female softwood cuttings treated IBA 500 ppm on June 22 was utmost 88%, and number of the cuttings was 5.94,%, and the length of the cutting was 4.94cm, The rooting of the male softwood cuttings treated IBA 500 ppm on June 15 was utmost 70%, and the number of the cuttings was 9, 10, and the length of the cutting was 10.00cm. 3. The rooting percentage, rootlet number, and length of root of male plants were generally better than those of female plants. But Female cuttings treated IBA 500 ppm, 1000 ppm, 2000ppm including on June 22 were rooted very well.

대구도시권 공업의 교외화에 관한 연구

전경구 大邱大學校 社會科學硏究所 2002 社會科學硏究 Vol.10 No.2

중심도시에 입지하고 있는 공업의 교외화를 촉진하고 중심도시를 주거 또는 상업지역으로 재개발하는 대도시 산업입지정책이 추진되고 있다. 그러나 이 정책은 기업의 교외화에 관한 체계적인 분석이 결여된 상태에서 추진되고 있는 실정인 바 본 논문은 대구와 경산지역에 입지하고 있는 기업을 대상으로 한 설문조사결과를 기초로 기업의 교외화 현상을 분석하고 이를 기초로 대도시 공업입지의 정책과제를 모색하는 것을 목적으로 하고 있다. 기업 이전여부에 관한 설문조사결과 대구시에서 경산으로 이전하겠다는 의사를 보인 기업은 전체 2,560개의 응답기업 가운데 36개 업체이고 그 가운데 중심도시의 기존 공단에서 교외로 이전을 희망하는 업체는 18개 업체에 불과한 것으로 나타났다. 이전을 희망하는 업체들은 기존 진량공단에 입주하고 있는 자동차산업과 유관업종이거나, 수성구에 입지하고 있는 업체로 토지이용계획의 변경에 따라 불가피하게 공장을 이전하여야 할 업체가 대부분인 것으로 나타났다. 따라서 대구의 경우 교외로 이전하여야 할 업체들은 대부분 이전한 것으로 보이고 현재 입지하고 있는 공장들은 도시집적의 특성이 강한 업체들인 것으로 보인다. 따라서 이들 업체들을 인위적으로 모두 교외로 이전하는 것은 문제이고 도시형 산업의 특성을 고려한 보다 합리적인 도시산업 입지정책이 요청된다.

노박덩굴(Celastrus orbiculatus)의 繁殖에 관한 硏究

沈慶久,安永熙,柳美先,劉鍾勳 成均館大學校 科學技術硏究所 1984 論文集 Vol.35 No.2

Bittersweet(Celastrus orbiculatus) grown widely in the mountains of Korea is perennial, deciduous and climbing plant. They have strong vines, flower from May to June and mature in October. The red coloured fruits are beautiful, use as the cut-flower materials, and also as the food of birds. This is now considered worthwhile to exploit as an outstanding landscape plant. The objectives of this study were investigation of the suitable propagation methods, reaffirmation of the utility of mist room for softwood cuttings, influence of bed temperature for hardwood cuttings, and determination of the effectiveness of various rooting promotion treatments. The results obtained were summarized as follows. The germination rate was 70% when the period of stratification was 50 days. In softwood cuttings, the rooting percentage and rootlet number tended to be greater in closed moist chamber than those in mist rooms. The rooting percentage, rootlet number and length of root in the 25℃-bed temperature were higher than those in the bed of 20℃ or 30℃ in hardwood cuttings. Cuttings treated with IBA 1000ppm rooted better than those received other hormone treatments in hardwood and softwood cuttings.

모과나무 臺木에 대한 서양 산사나무 接穗의 接木親和力에 관한 硏究

沈慶久,安永熙 成均館大學校 科學技術硏究所 1987 論文集 Vol.38 No.1

In order to study the grafting propagation of Crataegus species, scions of Crataegus oxycantha were grafted on to seedling rootstocks of Chaenomeles sinensis by veneer grafting. The healing percentage for graft union of 2 years after being veneer grafted Crataegus oxycantha and Chaenomeles sinensis revealed 85%, and transplanting survials were above 90%. Vegetative growth goes well, appearance of successful flowering, and general good health of the tree. Marked uniformity in growth rate or vigor of scion and stock. Microscopic evaluation of the graft union showed that callus has joined the vascular tissues of stock and scion. Crataegus oxcycantha on Chaenomeles sinensis seedling rootstock combination showed compatible unions 7 years after grafting.

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℃.

사과나무(Malus domestical Borkh.)의 VA 內生菌根에 관한 硏究

沈慶久,李景俊,劉種勳 成均館大學校 科學技術硏究所 1988 論文集 Vol.39 No.1

The beneficial role of vesicular-arduscular mycorrhizae(VAM) for the growth of fruit trees has already been well demonstrated in many countries, but little has been studied about VAM in Korea. so far, researches concerning physiological aspects of VAM have been abundant compared to researches on the ecological sides in fruit trees. Especially, the study about VA mycorrhizae fungi indigenous to apple orchard soil has been less studied. The studies described here were undertaken to identify the genera of VAM fungi living in the soil wherein apple trees rooted, and to observe in fected roots of host plants in apple orchards in Suwean, Taegu, and Naju area. The results odtained were as follows. Apple roots infected by VAM fungi, and VAM fungi noticed in the rhizosphere soil were opserved in Suweon and Taegu, but only spores have been shown in Naju. Identified genera of the fungi investigated in the rhizosphere soil were Glomes sp. The VAM fungi showed a circular from, spore diameter and wall thickness were respectively 306㎛ and 17㎛. The form of attached hyphae was funnel shape, and that of vesicle was circular.