수지상 내생균근 Glomus Etunicatum의 접종이 석탄폐광지 토양에 식재한 아까시나무의 생육 및 생리에 미치는 영향

홍승진,임경민,박용우,구창덕,우성민 忠北大學校 農業科學硏究所 2012 農業科學硏究 Vol.28 No.2

본문참고

流出變化에 의한 背水現象 解析

徐承德,石基洪 慶北大學校 1985 農業科學技術硏究所報 Vol.2 No.-

Results investigated backwater phenomena at Geumho river basin to get a basic data for Daegu basin area development plan are as the follows. 1. It is a A=0.35 L 1.848 (r=0.97), the relationship between basin area and river length at Geumho river. 2. Dividing the rainfall of Geumho river basin as two parts, a first half rainfall and a second half rainfall, the amount of a first half rainfall appeared 57.5% comparison with total rainfall. 3. The maximum flood discharge appeared 12 hrs. continuous rainfall rather than 24 hrs. continuous rainfall. 4. Results investigated backwater phenomena from Geumho Ⅱ bridge to chungchun appeared the rising water level of 69cm, 55cm, 44cm, at section Ⅲ in the starting point water level of 1.8m, 2.4m, 4.0m respectively. 5. Results investigated backwater phenomena by the flood waterlevel appeared a similar form. There was a average rising waterlevle of 30cm at section Ⅲ. At the results of this computation, it was confirmed that section Ⅲ was affected the highest backwater phenomena among the observed river reaches in Geumho river. In addition, this paper should be given a assistance to decide a economic and safe section in construction of bank of river and estuary barrage.

河川의 取入水門設置에 依한 背水現象과 洪水 調節硏究

徐承德,金哲會,權武男 慶尙大學校 1972 論文集 Vol.11 No.-

Backwater curves were first applied to the long, smooth profile of the water surface upstream from a dam or other obstruction in a river channel. There are several methods for determining backwater curves in low-velocity river channels. Each of the methods is based on Bernoullis energy theorem and Mannings friction formula. The most common type of backwater Problems is the determination of water-surface elevations in a river channel upstream a station or Point to which the discharge and water-surface elevation are known. Flood routing identifies the procedure by which a flood discharge hydrograph at any point on the stream is determined from a known discharge hydrograph at some point upstream. It is generally necessary to use approximate flood-routing methods that either ignore some of the factors affecting flood wave movement or are based upon simplifying assumptions in regard to such factors. Of the many methods for the flood routing or storage analysis, the Muskingum method has mainly been applied to a natural river channel and the Modified Pul's method to a reservoir and weir respectively. In this thesis, Backwater and flood routing problems are analysed jointly. 1. Backwater curves at design water level 2.40m M.S.L. In case of natural river channel, the following theorem was applied ?? ?? ?? where Q=192.0 ㎥/Sec, A=300, 7㎡, R=2.65m, n=0.03 as the result, 18cm back water height was derived at the length of 5.3km, (refer to tablee 12). In case of intakegate established, Bresse formula was applied ?? ?? using the above, l=25,015.1-10,000h+?? was derived and 30.2cm of backwater height estimated at the length of 5.3km., In eventual, 2.2cm of backwater height difference between two cases were calculcted. 2. Flood routing at the design storage capacity of 1,964,950㎣(design water level of 2.40m M.S.L.) Discharge capacity of the Intakegate requires 36mins to drop the height of 2.40 M.S.L. to 0.75m M.S.L. at no rainy condition, and considering 220mm of maximum daily rainfall in flood time, 60mins were required to drop the gage height to the 0.75m M.S.L. During the control period of 60mins, the water level in each point was followings, Baikgoo: 2,415m M.S.L.(Lowest ground height: 2.52m) Banwol: 2.67m (2.72m) Masan: 2.60m (3.07m) Dodo: 2.91m (3.28m) Refering to the above results, a damage may not be met by those backwater curve and flood.

유리纖維 補强 콘크리트 流動 特性에 관한 硏究

朴承範,任昌悳,尹義植 忠南大學校 産業技術硏究所 1989 산업기술연구논문집 Vol.4 No.1

Concrete is an excellent structural material, but it has many problems due to brittle behavior, weak resistance in tension, flexibility and toughness. In order to improve these problems, usually fiber reinforced concrete is used. But in the case of GFRC insufficient workability is caused by using glass fiber and there is lack of studying on it. This report of the following concrete of GFRC was experimented by the different W/C, S/A, glass fiber contents and maximum size of Aggregates. The results of this study is as follows; 1) Optimum S/A ratio is 0.6 at the glass fiber contents of from 0.25% to 0.75% in GFRC, but it cannot be obtained optimum S/A ratio at over 0.75. 2) Even though increasing the W/C ratio, we can get more slump, but slump is much more influenced by fiber contents in GFRC rather than increasing the W/C ratio. 3) Workability of GFRC is much more influenced by fiber contents than fiber length. 4) Workability of GFRC is a little improved by the bigger maximum size of aggregates.

폴리카프로락톤 매트릭스로부터 세파드록실의 방출에 미치는 BSA의 영향

김승렬,정연진,김영미,이치호,김대덕 한국약제학회 2004 Journal of Pharmaceutical Investigation Vol.34 No.5

In order to investigate the effect of bovine serum albumin (BSA), as a pore former, on the controlled release of an antibiotic from a biodegradable polymeric device, polycaprolactone (PCL)-cefadroxil matrices were prepared by the solvent casting method. The amount of cefadroxil released from various formulations at 37℃ was measured by HPLC. The duration of antimicrobial activity of matrices against S. aureus was evaluated by measuring the diameters of the inhibition zone. The morphology of the matrices was investigated by scanning electron microscopy (SEM). The release rate and extent of cefadroxil from PCL matrix increased as the loading dose and particle size of BSA/cefadroxil mixture powder increased. Cefadroxil released from the matrix exhibited antibacterial activity for up to 4 days. SEM of the cross-section of matrix showed the typical channel formation after 3 days of release study. Thus, a biodegradable polymeric matrix loaded with antibiotic/BSA mixture can effectively prevent bacterial infection on its surface, thereby bringing about an enhancement of biocompatibility of biomaterials.

항혈청으로 처치된 질트리코모나스(Trichomonas vaginalis) 미세구조의 변화

민득영,류재숙,안명희,박승정,조휘율 한양대학교 의과대학 1994 한양의대 학술지 Vol.14 No.2

Trichomonas vaginalis is a parasitic flagellate found in the urogenital tract of humans. The present study was performed to evaluate the effect of antiserum from rat and rabbit on fine structure of T. vaginalis. Trophozoites were subcultured in TPS-1 medium(Diamond, 1968) at 37℃, CO₂incubator. T. vaginalis were inoculated in mixed medium containing of antiserum for 10 and 30 minutes, then observed with transmission and scanning electron microscope. The results are as follows: 1. T. vaginalis was ellipsoidal or ovoidal in shape with 4 flagella, an undulating membrane and an axostyle. The plasma membrane of body surface was smooth and furrowed. Pseudopodia(filopods) were often observed by SEM. Ultrastructure of trophozoites consisted of an elliptical shaped nucleus, RERs and Golgi complex around the nucleus, hydrogenosomes, glycogen granules, polysomes and vacuoles in cytoplasm. As the organelles for supporting and movement, an axostyle, kinetosomes, flagella, undulating membrane, costa and parabasal filaments were observed. 2. T. vaginalis treated with antiserum, its surface appeared destruction of plasma membrane, alteration and/or disappearance of axostyle, flagella and undulating membrane under the SEM and showed fine structural changes such as the nucleus surrounded by many vacuoles, decreased ribosomes, which attached to nuclear membrane and RER, vesiculated RER and Golgi complex. The area of filamentous cell coat and a number of coated vesicles were increased on plasma membrane with partial damage. According to going by the incubation time, the progressive destructions of cytoplasmic organelles, nuclear membrane, hydrogenosomal membrane, kinetosome and rootlet fiber were noted. With above results, it is presumed that specific antiserum induced the disturbance of protein systhesis and the damage of cytoplasm resulting lysis of T. vaginalis.

칼라모니터의 색보정을 위한 분광복사 스펙트럼의 규격화

朴勝玉,朴正萬,金洪錫,辛鉉德,林在權 대진대학교 1994 大眞論叢 Vol.2 No.-

To obtain the spectral characteristics of a color monitor, we measured the spectral radiance curves of phosphors vs. digital values experimentally. The relationship between digital values and luminances is not linear. To predict the digital values needed to display specific colors, we presented a model using maximum and averaged values of each curve.

작용기를 포함하는 새로운 거대고리 폴리에테르의 합성

장승현,김동준,이갑득 대구대학교 부설 과학교육연구소 1993 과학교육 Vol.6 No.-

소뇌 출혈을 동반한 침입성 부비동 아스페르길루스증 1예

양현덕,박성욱,손일홍,이지용,석승한,조광호,이성수 圓光大學校 醫科學硏究所 2003 圓光醫科學 Vol.18 No.2

칼라영상시스템의 칼라보정 연구

朴勝玉,朴正萬,金洪錫,辛鉉德,林在權 대진대학교 1994 大眞論叢 Vol.2 No.-

We proposed a color calibration algorithm by considering spectral characteristic of the chosen color reproduction system which can be applied to device independent using characteristic vectors of surface reflectance. To evaluate color reproducing characteristics we applied the proposed color calibration algorithm by choosing the color of Macbeth ColorChecker's twenty four as a test color set.