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자원 제약 조건이 공기-비용 교환 문제에 미치는 영향 분석
홍성준,류한국,유정호,이현수 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1
It has been generally accepted that cost and time are in reverse proportion. But, due to the resource constraints such as resource capacity, resource availability, resource continuity and resource level, time and cost could have unfixed relation and time-cost trade-off curves could take various forms. This study proposes the labor-related constraints affecting the time-cost trade-off problems and analyzes the effects.
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이성대,이현국,신현길,이승훈 한라대학교 2007 論文集 Vol.10 No.-
For geotechnical and economical reasons, various bridge piers have become more and more popular in bridge design. This type of pier can significantly reduce construction costs, compared to spread footer structures when sediment scour is a consideration. However, the scour mechanisms for piles are much more complex, and design of local scour depths more difficult to predict. In this Experiments of local scour around the downward tapering oblong pier with the geometrically nonlinear structurea and a series circular piers are carried out under steady clear water scour conditions. The paper presents the following research results: The scour at a series circular piers is different from that around a single pile, depending on the pile spacing. The interference effect diminishes for pile spacing L_(d)/D=3.5, depending on the pile group arrangement.
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RUSLE 방법을 이용한 만대천 유역의 토사유출량 산정
최한규,박수진,국성표 江原大學校 産業技術硏究所 2010 産業技術硏究 Vol.30 No.B
This study was intended to estimate the soil runoff at the basin of Mandaechun where the measure needs to be taken to deal with the increasing muddy water resulting from soil runoff during wet season and torrential rain at the high reaches of the Soyang lake where highland vegetables are cultivated and soil replacement for improvement is carried out every two to three years. The study was carried out in such a way of identifying the topographic factors using geographical spatial data from Water Management Information System (WAMIS) and ARC-VIEW program and estimating the soil runoff by rainfall frequency using Revised Universal Soil Loss Equation (RUSLE), and furthermore, evaluating the soil runoff contribution at the basin of Mandaechun based on estimate of the soil runoff by section.
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박일,임영국,최성도,임현성,정종훈,문철웅 朝鮮大學校 附設 醫學硏究所 1992 The Medical Journal of Chosun University Vol.17 No.1
호흡기 증상과 급성신부전증이 발생된 환자에서 혈액검사, 혈청학적 검사, 방사선학적 검사, ANCA test 및 신생검을 통하여 Wegener씨 육아종증을 경험하였기에 문헌 고찰과 함께 보고하는 바이다. 본질환이 재발하는 경우는 cyclophosphamide에서 azathioprine으로 치료약을 바꾸었을때나 특히 ANCA 반응이 양성으로 지속시 발생한다. Godman과 Churg는 상기도의 괴사성 육아성 병변, 하기도의 괴사성 혈관염, 국한성 신사구체염을 진단의 지표로 삼았다. 특히 상기도 점막의 생검 소견상 괴사성 육아성 혈관염이 보이면 일단 본 증을 의심하고 폐 생검과 신 생검이 필요로 한다. Wegener's Granulomatosis is an uncommon disease which is characterized by granulomatous vasculitis of both lung and kidney. Although the cause is unknown, it's suggesting that disordered immunity with both antibody and cell-mediated tissue damage occurs. The disease affects patients of any age. Characteristic clinical manifestations are diverse but in clude saddle nose deformity, sinusitis, productive coughing, myalgia, fever etc. Characteristic laboratory abnormalities include elevated ESR, neutrophilic leukocytosis, anemia and positive test for ANCA test. Renal biopsy is important for diagnosis. The treatment of choice is a combination of corticosteroid and cytotoxic agent. A53-year-old woman was admitted to our hospital because of productive coughing, short of breathing, oliguria, nausea, and vomiting. Three months ago, she was suffered from general weakness, poor appetite, tingling sensation on extremity, and loosely stool. Twenty days ago, above symptoms were aggravated, she admitted local clinic. Six days ago, because of CBC showed anemia , she was done transfusion. During transfusion, she was developed urticaha then productive coughing, dyspnea, increased serum BUN and creatinine levels. She was transferred to our hospital under the impression of ARF. On the admission, she was chronic ill-looking appearance with pale conjunctiva, tachypnea, dyspnea, and cold sweating. We have checked the patient by CBC, serum and serologic test, X-ray, ANCA test, renal biopsy. With renal biopsy microscopic examination study revealed necrotizing vasculitis, We treated a combination therapy with methyl-PDS and cyclophosphamide. She had a good response. So we report wegener's granulomatosis with the review of relevant literature.
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김승문,김성수,김상국,정수현 한국공업화학회 2003 응용화학 Vol.7 No.1
이상의 실험 결과로부터 다음과 같이 요약할 수 있다. 1. 경유를 수소공여제로 사용하여 450℃에서 열분해 하였을때의 분해율은 49.70%으로 PP의 32.83%에 비해 분해율이 50% 향상되었다. 2. TS-D-450의 액상 수율이 40.63wt%로 가장 높았다. The effect of the Zeolite HX, NaX, and KX prepared by ion-exchange method, on the reduction-carburization of WO₃was studied, This study was performed at the temperature range from 300 ℃ to 725 ℃ with CO gas. The produced gas. CO₂, was analyzed by mass spectroscopy. The addition of the Zeolite HX, NaX, and KX into WO₃increased the efficiency of the reduction-carburization of WO₃and Zeoilte HX with the strongest acidity was the most effective on reduction-carburization among them. The Zeolite HX, NaX, and KX improved the oxygen mobility of WO₃and the acidity of the Zeolite was directly related to the increasing efficiency of reduction-carburization of WO₃.
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유기질비료 시비량에 따른 오미자 묘목의 초기 생육특성에 관한 연구
이경아,박태호,박성용,김도현,오문국,김민수,안태진,이상원,김영국,안영섭,박충범,차선우,송범헌 忠北大學校 農業科學硏究所 2015 農業科學硏究 Vol.31 No.1
This study was carried out to have basic and applied informations to find the optimum nitrogen fertilization level for organic cultivation and to investigate early growth characteristics of Schizandra chinensis Baillon. Different application levels of the organic fertilizer were based on the recommended rate of N fertilizer. Five different levels of the organic fertilizer were applied to S. chinensis and early growth responses such as the length of vine, the diameter of vine, the number of leaves, and the number of branches were investigated. Lengths of main and total vines were shown longer at the level of 1.0 time organic fertilizer than those at others. The vine length at early growth was the highest at the level of 1.0 time organic fertilizer among the treatments. Stem diameter was shown thicker level of 1.0 time organic fertilizer than others on August and September, whereas on October it was the thickest in the conventional cultivation. Number of leaf was increased higher at the level of 1.0 and 2.0 times organic fertilizer than that in the compared to conventional. The number of branches was appeared the lowest at the level of 1.0 time organic fertilizer at early growth, however they were increased through progressing their growth stages. They were not significantly difference among the treatments except for the level of 2.0 times organic fertilizer. Based on the research results, the growth of S. chinensis was commonly higher at the level of 1.0 time organic fertilizer compared to other treatments.
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