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        • Pepsin - Cellulase 에 의한 국내산 주요 조사료의 DMD 에 관한 연구 : (3) 주요목초의 세포벽 구성물질과 건물소화율(乾物消化率) (3) CELL WALL CONSTITUENTS AND DRY MATTER DIGESTIBILITY OF SEVERAL PASTURES

          김영길,김대진,맹원재,황태기 한국영양사료학회 1989 韓國營養飼料學會誌 Vol.13 No.4

          主要 牧草의 成熟期別에 따른 成分 및 消化率變化를 評價하기 위하여 禾本科牧草 4種(orchard grass, tall fescue, timothy, perennial ryegrass)과 荳科牧草 3種(alfalfa, ladino clover, led clover)을 採取하여 實施하였다. 이들 牧草를 70℃에서 24時間 건조하고 粉碎하여 1㎜채를 통과시켜 粗蛋白質, 粗灰分, neutral detergent fiber(NDF), acid detergent fiber(ADF), acid defergent lignin(ADL), 그리고 pepsin-cellulase를 이용한 乾物消化率을 測定하고 TDN, DE, ME를 계산하였는데 그 結果를 要約하면 다음과 같다. 1. 粗蛋白質 含量에 있어서 禾本科牧草는 17.80∼19.39% 범위였는데 荳科牧草는 16.66∼22.99% 범위였으며 生育時期의 進行에 따른 蛋白質 含量은 一定期問동안 低下하였으나 그후는 變化가 없었다. 2. 粗灰分 含量에 있어서 禾本科收草는 11.89∼15.06%였고 荳科牧草는 11.57∼14.32%의 범위였고 生育時期의 進行에 따른 粗灰分 含量 차이는 없었다. 3. NDF에 있어서 禾本科牧草 는 53.99∼57.28% 범위였는데 荳科牧草는 40.68∼54.22% 범위였으며 生育時期의 進行에 따라 增加하였다 (p<0.05). 4. ADF에 있어서 禾本收草는 31.47∼36.61% 범위였는데 荳料牧草는 30.28∼36.25%의 범위로 生育時期의 進行에 따라 높았다 (p<0.05). 5. ADL에 있어서 禾本料牧草는 2.30∼3.85% 범위였는데 荳科牧草는 4.21∼6.84%의 범위였으며 生育時期의 進行에 따라 增加하였다 (p<0.05). 6. DMD에 있어서 禾本科牧草는 50.71∼70.40% 범위였으며 荳科牧草는 61.62∼79.19%의 범위로 生育時期의 進行에 따라 減少 하였다 (p<0.05). 7. 牧草類의 可消化養分總量, 可消化에너지, 代謝에너지價는 生育時期의 進行에 따라 減少하는 경향이었다. 8. 禾本科牧草의 DMD 含量(Y)과 粗蛋白質含量(X) 사이에는 Y=1.915X +23.561의 回歸式과(r=0.396, p<0.01)의 相關關係가 있었고 DMD含量(Y)과 ADF(X) 사이에는 Y= -1.475X + 108.538의 回歸式과(r=-0.483 p<0.05)의 相關 이었다. 9. 荳科牧草의 DMD 含量(Y)과 ADL 含量(X)사이에는 Y = -3.856X + 90.531의 回歸式과 (r=-0.893, p<0.01)의 高度의 相關關係와 DMD 含量(Y)과 組蛋白質 含量(X) 사이에는 Y=2.757X + 14.180의 回歸式과(r=0.834, p<0.01)의 相關關係가 있었다. The changes of the chemical components and dry matter digestibily of 4 grasses (orchard grass, tall fescue, timothy and perenial ryegrass) and 3 legumes (alfalfa, ladino clover and red clover) cultivated at the grassland in Yangsan, Kyungsang-namdo province was investigated. They were harvested at varying stages of maturity. Samples were dried at 70℃ for 24 hr. and ground to pass a 1㎜ screen. They were subjected to the determination of the crude protein(N × 6.25), crude ash, neutral detergent fiber (NDF), acid detergent fiber (ADF), acid detergent lignin (ADL), and dry matter digestibility(DMD) by pepsin-cellulose technique. The energy values(total digestible nutrients, TDN; digestible energy, DE; metabolizable energy, ME) were calculated by DMD of pepsin-cellulose technique. The results obtained were as follows; 1. Crude protein content of grasses and legumes ranged from 17.80% to 19.39% and 16.66%-22.99%, respectively and crude protein had a tendency to decrease with increasing stage of maturity. However, contents of crude protein did not change between middle and late stage in some pastures. 2. The crude ash content of grasses and legumes ranged from 11.89% to 15.06�o and 11.57-14.32% respectively, and crude ash did not vary by stages of maturity. 3. The NDF of grasses and legumes ranged from 53.99% to 57.28% and 40.68%0-54.22%, respectively, and increased by advancing stage of maturity (p<0.05). 4. The ADF of grasses and legumes ranged from 31.47% to 36.25% and 30.28%-36.25%, respectively, and increased by advancing stage of maturity (p<0.05). 5. The ADL of grasses and legumes ranged from 2.3% to 3.85%, respectively, and increased by advancing stage of maturity(p<0.05). 6. The DMD of grasses and legumes ranged from 50.71% to 70.40% and 61.62%-79.19%, respectively, and decreased by advancing stage of maturity (p<0.05). 7. The calculated energy (TDN, DE, ME) values of grasses and legumes decreased by stage of maturity. 8. Regression equation and correlation coefficients of grasses and between DMD (Y) and crude protein (X) were Y=1.915X + 23.561 and r= 0.396 (p<0.05), and of grasses between DMD (Y) and ADF (X) were Y = -1.465X + 108.538 and r=0.483 (p<0.05), respectively. 9. Regression equation and correlation coefficients of legumes between DMD (Y) and ADL (X) were Y = 3.856X + 90.531 and r=-0.893 (p<0.01), and of legumes between DMD (Y) and crude protein (X) were Y =-2.758X + 14.180 and r=0.834 (p<0.01), respectively.

        • 터키種 잎담배 生産에 關한 硏究

          盧載榮,鄭元采,安長憲,卞珠燮,姜信寓 충북대학교 엽연초연구소 1974 煙草硏究 Vol.2 No.-

          I.Influence of deficient or excessive supply of soil moisture. The variety used in this study were Turkish varieties (Smyrna, Samsun, Zichna and Xanthi). Soil moisture content were 30%, 45% and 60% to maximum water-holding capacity for whole growth period. This experiment was carried out to study on the influence of soil moisture to growth and physiology of Turkish varieties. The results are summarized as follow ; a. Dry weight of Samsun and Zichna were-increased at 45% soil moisture content, but Smyrna and Xanthi at 60%. In every soil moisture treatmennt, there were significant difference between D plot and M, W plot but there were no significant difference between M plot and W plot. b. Percentage of dry matter of Smyrna was higher then those of the other varieties in the D plot and W plot. c. Leaf area was increased ill the Samsun of which process was slightly late. In every soil moisture treatment, M plot and W plot were higher than D plot. d. Dry weight per unit leaf area of Smyrna and Zichna were higher than that of Xanthi and Samsun. e. Percentage of dried up leaves was the W plot, and lower at the D and M plot. Smyrna was lower at M plot, Zichna at D and M plot, Xanthi at D plot, but Samsun was no difference among plots. f. In the number of harvested leaves, Smyrna was increased in order W>M>D. In the number of harvested leaves, Smyrna showed difference according to the soil moisture in order W>M>D plot, but Samsun and Zichna showed no difference among each treatments, Xanthi was higher in M plot than D and W plot. From those results, Smyrna showed the highest dry weight on account of the weight of leaf area and percentage of dry weight increased, it was decreased in order Zichna>Samsun Xanthi in the each soil moisture contents. Number of harvested leaves, dried up leaves, leaf area and number of harvested leaves but decreased, percentage of dry matter W treatment increased the number of total leaves, number of dried up leaves, leaf area, percentage of dried up leaves and percentage of dry matter. Yields were the lowest at D treated, there were no difference between M and W treatment. II.Influence of deficient or excessive supply of soil moisture at different growing stages. This experiment was carried out to study on the influence to the growth and physiology according to the soil moisture content during each growth stage on Turkish varieties culture. The varieties used in this study were Samsun, Zichna and Xanthi. The results are summarized as follow; a. Dry leaf weight was decreased in order Zichna>Samsun>Xanthi, there were remakable difference among every variety. In each soil moisture content, weight of dry matter was increased by M and W treated at late stage after MW and MM treated at early and middle stage of growth DWM and MDM plot. Dry leaf weight was decreased at D plot more than M and W plot late stage after early stage was treated by MW and MM. Dry leaf weight was the highest at WWM treate, dthere were high significant difference between varieties and soil moisture contents. b. Percentage of dry matter was decreased in order Zichna=Xanthi>Samsun. In soil moisture treated, it was increased in D treated at the latter stage after MM, MW and WM treated at early and middle stage, but it was decreased by DDM, DWD, MDM, WWD, WMM, and WWM treated. There were high significant interaction between varieties and soil moisture contents. c. Leaf area showed in order Samsun=Zichna>Xanthi. In soil moisture treated, leaf area was increased by WM, MM and MW treated at the middle and latter stage after D treated at early stage, but it was decreased at WWD, WMD, WWM, MWD and MMD treated. d. Dry weight per unit leaf area were no difference among varieties, in soil moisture treated, it was increased by the MMW, MWD, MMD, WMD and DMW treated, weight of per unit leaf area showed significant difference interaction between varieties and soil moisture contents. d. Percentage of dried up leaves showed as follow, Samsun>Xanthi, Samsun=Zichna, Zihna=Xanthi. In soil moisture treated, it was increased by M and W treated at early stage than D treated. f. Number of harvested leaves was decreased in order Xanthi>Samsun>Zichna, there were no difference among soil moisture contents, but appeard high significant difference at the interaction between varieties and soil moisture contents. As the results of this experiment, especially, this experiment will be continue on the influence of soil moisture condition in order to development of home production system.

        • 칡의 대량생산 이용과 생리활성물질에 관한 연구 : (2) 당밀 , 칡즙 및 칡뿌리의 첨가가 칡사일리지의 발효품질과 사료적 가치에 미치는 영향 (2) EFFECTS OF THE ADDITION LEVEL OF MOLASSES , KUDZU JUICE AND KUDZU ROOT ON THE FERMENTATIVE QUALITY AND FEED VALUE OF WILD KUDZU SILAGE

          김대진,맹원재,김영규 한국영양사료학회 1994 韓國營養飼料學會誌 Vol.18 No.2

          야생칡에 당밀과 칡즙 및 칡뿌리를 첨가하여 사일리지를 제조하여 발효물질과 건물소화율에 미치는 영향을 조사하였다. 각 첨가물의 첨가수준을 각각 0, 2, 4, 6, 및 8%로 하여 7.5ℓ의 플라스틱 용기에 120일간 ensiling한 후, 사일리지의 발효특성과 사료적 가치를 평가하였다. 그 결과를 요약하면 다음과 같다. 1. 사일리지의 발효품질을 나타내는 pH와 유기산은 당밀 첨가수준이 증가함에 따라 향상되었으나(P<0.05), 칡즙과 칡뿌리는 발효품질을 향상시키지 못하였다. 2. 세포벽 구성물질인 NDF, ADF, ADS은 당밀 첨가수준의 증가에 의해 유의하게 감소하였으나(P<0.05), 칡즙이나 칡뿌리의 첨가에는 영향을 받지 않았다. 3. 당밀의 첨가수준이 증가함에 따라 칡잎과 줄기사일리지의 DMD가 크게 증가하였으나(P<0.05), 칡즙과 칡뿌리의 첨가수준에 따른 증가는 없었다. 4. 사일리지 품질(Y)과 pH(X)간의 회귀식은 Y=3.01-52.8X, r=-0.918(P<0.01)으로 나타났다. 5. DMD(Y)와 ADS(X) 간의 회귀식은 칡잎 사일리지에서는 Y = 118.16 -0.71X, r = -0.931(P<0.01)이었고, 칡줄기 사일리지에서는 Y =98.95 -0.148X, r = -0.813(P< 0.01)의 상관관계를 보였다. 6. DMD(Y)와 당밀 첨가수준(X)간에는 칡잎 사일리지에서 Y = 47.73 + 0.47X, r = 0.973(P<0.01), 칡줄기 사일리지에서는 Y = 38.47 + 0.38X, r = 0.852(P<0.01)의 상관관계가 나타났다. 따라서 칡 사일리지의 제조에 있어서 당밀의 첨가는 발효품질과 세포벽 구성물질의 함량, 그리고 건물소화율에 효과가 인정되었으나 칡즙과 칡뿌리의 첨가는 칡 사일리지의 사료가치를 향상시키지 못하였다. This experiment was conducted to investigate the fermentative characteristics and in vitro dry matter digestibilities (DMD) of wild kudzu(Pueraria thumber giana, Ben tham) silage added molasses, kudzu juice and kudzu root at the level of 0, 2, 4, 6 and 8%, respectively. The samples of silage were prepared for the determination of the pH and organic acid concentration and then they were separated into the leaf and the stem to evaluate the contents of the neutral detergent fiber(NDF), acid detergent fiber (ADF) and acid detergent lignin(ADL). Digestibility of silage was evaluated by pepsin-cellulase digestion technique and the energy values(total digestible nutrients. TDN; digestible energy, DE; metabolizable energy, ME) were calculated based on the DMD values. The results obtained were as follows; 1. The fermentative quality of silage in terms of pH and organic acid content was improved with the increasing addition level of molasses(p<0.05) but there was no such an improvement by the addition of kudzu juice and kudzu root. 2 The NDF, ADF and ADL contents of the leaf and stem were decreased with increasing level of rmlasses addition(p< 0.05). However, additions of kudzu juice and kudzu root did not affect the content of fiber. 3. The DMD of leaf and stem of silages were increased by increasing level of molasses(p<0.05). However, those of leaf and stem silage were not increased by the addition of kudzu juice and kudzu root. 4. A regression equation and correlation coefficient between pH(X) and Flieg's score(Y) of silage added different levels of molasses was Y = 3.01 -52.8X, r = -0.918(P<0.01). 5. Regression equation and correlation coefficient between ADF(X) and DMD(Y) of kudzu silages added different levels of molasses were Y = 118.16 -0.71X, r = -0.931(P<0.01) in leaf silage and Y =98.95 -0.148X, r = -0.813(P< 0.01) in stem silage, respectively. 6. Regression equation and correlation coefficients between levels of molasses(X) and DMD(Y) was Y = 47.73 + 0.47X, r = 0.973(P<0.01) in leaf silage and Y = 38.47 + 0.38X, r = 0.852(P<0.01) in stem silage. In conclusion, the fermentative quality and feed value of wild kudzu silage were improved with the molasses addition. However, the addition of the kudzu juice and kudzu root did not improved the quality of the kudzu silage.

        • 돼지 卵子의 透明帶에 대한 單一클론抗體生産과 그 特性에 關한 硏究

          金鐘培,劉永春,金昌圭,權五中,鄭盛元,鄭吉生 건국대학교 동물자원연구센터 1991 動物資源硏究誌 Vol.16 No.-

          本 試驗은 單一클론抗體의 강한 特異性과 抗體性質의 不變性을 이용하여 發生學的 側面에서 哺乳動物 卵子의 透明帶의 機能과 構造를 이해하고, 또한 種特異的인 精子 受容體의 存在 및 生化學的 構造를 규명하기 위한 기초연구로서, 돼지 卵子의 透明帶를 免疫原으로 하여 BABL/c 생쥐로부터 單一클론抗體를 생산하고 그 특성을 구명하였던 바 다음과 같은 결과를 얻었다. 1) 3마리의 BABL/c 생쥐(YⅠ, YⅡ, ZI)에 돼지卵子의 透明帶를 免疫化하고, 複合抗體 生成을 확인한 후 생쥐의 脾臟細胞와 Myeloma(SP2/O-Ag14)를 polyethylene glycol를 融合을 실시한 결과 각각 25.8%, 54.5% 그리고 59.7%의 融合效率을 나타내었으며, ELISQ에 의해 陽性反應을 조사한 결과 각각 17.3%, 32.6% 그리고 6.2% 陽性反應 效率을 나타내었다. 2) YI에서 강한 陽性反應을 보인 6개의 well에 대한 cloning을 실시하고 抗體檢證을 행한 결과 20.8% ∼ 48.4%의 Cloning效率과 54.6% ∼ 82%의 陽性反應 效率을 나타내었다. 3) 강한 陽性反應을 나타낸 항체에 대해 sandwich ELISA法에 의해 isotype을 決定하였던바 2E93C(YⅠ), 3E83E7(YⅠ), 4E3(YⅡ)각각 IgG₂b, IgG₂a, IgM으로 확인되었다. 4) Isotype이 決定된 2E93C9(YⅠ), 3E84E7(YⅠ), 4E3(YⅡ)의 세포를 생쥐의 腹腔에 주사하여 얻은 腹水를 indirect ELISA法에 의해 titer를 決定한 결과 모두 1:400,000 이상의 높은 titer를 나타내었다. 5) 處理區로서 單一클론抗體의 腹水와 對照區로서 normal mouse serum이 각각 2%씩 함유된 배양액속에서 난자를 배양한 후 顯徵鏡下에서 관찰했을 때 對照區에서 배양된 난자의 표면은 정상적인 형태를 나타냈으나 處理區에서 배양된 卵子는 표면에 뚜렷한 沈澱層을 형성하였다. 6) 處理區와 對照區 卵子를 Rabbit anti-mouse IgG-FITC가 1% 함유된 배양액속에서 배양하고 洗滌한 후 螢光顯徵鏡下에서 관찰한 바 處理區의 卵子는 透明帶 주위에서 螢光이 나타났으나, 對照區에서는 나타나지 않았다. This study was carried out ot produce and characterize monoclonal antibodies against porcine zona pellucida, and undertaken as a basic study to develop immunocontraceptive vaccine and to investigate the function of zana pellucida in early fertilization process. The results obtained were summarized as follows: 1. Spleen cells of three BALB/C mice(YⅠ, YⅡ and ZI) which were immunized with porcine zona pelucida were fused with myeloma cells(SP2/O-Ag14) by polyethylene glycol. At the result of fusion, fusion efficiency was 25.8 , 54.5% and 59.7% and positive efficiency 17.3%, 32.6% and 6.2%, respectively. 2. Cloning efficiency was shown to be from 20.8% to 48.4% and positive efficiency of them were 54.6% to 82%. 3. Sub-isotypes of three strong positive antibodies, 2E93C(YⅠ), 3E83E7(YⅠ) and 4E3(YⅡ) were determined by sandwich ELISA method and shown to be as IgG2b, IgH2a and IgM, respectively. 4. The titers of three ascitic fluids containing antibodies, 2E93C9(YⅠ), 3E84E7(YⅠ) and 4E3(YⅡ) were determined by indirect ELISA and all of them showed above 1:400,000. 5. The layer of precipitate was observed on the zona incubated with medium containing 2% ascitic fluid of monoclonal antibody while the eggs treated with 2% normal mouse serum did not. 6. Porcine eggs incubated with medium containing 2% ascitic fluid of monoclonal antibody and followed by subsequent incubation with Rabbit anti-mouse IgG-FITC conjugate showed strong fluorescent light on the zona surface while the zona of normal mouse serum-treated eggs did not show fluorescence.

        • KCI등재

          수도의 유묘기 냉해에 관한 연구 II. 주요 신품종들의 제 3 엽기 내냉한계

          권용웅,김주헌,오윤진,이문희,Kwon,,Y.W.,Kim,,J.H.,Oh,,Y.J.,Lee,,M.H. 한국작물학회 1979 Korean journal of crop science Vol.24 No.2

          Indica \times Japonica 교잡에 의해 육성된 수도신품종들의 유묘기 내냉한계와 내냉발현특성을 Janica품종들과 비교 고찰하고자 10개 품종을 유묘기 내냉성이 제일 약한 제 3 엽기에 주간 11\circ C야간 5\circ C의 저온조건에 0, 3, 4, 5, 8, 10일 처리한 결과는 다음과 같다. 1. 저온처리 전후에 주야 26\circ C / 18\circ C에서 생장한 파종 후 35일묘의 건물중이 무처리묘의 90% 이상이 되는 최장저온처리기간은 신품종들의 경우 0.8~2.8일 간으로써 특히 조생통일이 짧고 밀야 2003가 길었으며, Japonica 품종들의 경우 4.0~5.2일간으로써 신품종들보다 가역적 내냉한계기간이 배정도 길었다. 2. 저온처리에 따른 냉해발현 종료후 묘생존율이 90%이상되는 최장저온처리기간은 신품종들의 경우 3.0~5.6 일간으로써 수원 258호가 제일 짧고 수원 25001가 제일 길었으며, Japonica 품종들은 공시품종 모두 10일간 이상으로 신품종들보다 비가역적 내냉한계기간이 2~3배 이상 길었다. 3. 저온처리중 엽신변색고사율(y_1) 및 묘고사율(y_2), 저온처리 후 발현된 모신변색고사율(y_3), 묘고사율(y_4), 냉해를 받은 35일묘의 초장(y$_{5}$)과 건물중(y$_{6}$)은 모두 저온처리기간(x)과 고도로 유의한 상관성을 보였는데 특히 y_1, y_3, y$_{6}$와 높은 상관성을 보였으며, y_1~y$_{6}$들 상호간에도 모두 고도로 유의한 상관성을 보였으나 특히 y_1과 y_3, y_3와 y$_{6}$의 상관성이 컸다. 4. 냉해징상들의 발현순서와 상태들간의 상관성 분석결과로부터 가역적 및 비가역적, 직접적 및 간접적 냉해의 발생과 그들의 복합현상으로써 결과되는 관찰되는 냉해징상의 발현과정 모식도를 작성하여 그림 5에 제시하였다. 5. 수도유묘의 내냉성 평가에 있어서 가역적 피해와 비가역적 피해를 종합적으로, 그리고 정량적으로 나타내며 일반적으로 냉해를 나타내는 조사형질들 중 냉해에 가장 예민한 반응을 보이는 건물중율을 1차요인으로 취급할 것으로 제의한다. Comparative tolerance of the new rice varieties from Indicax Japonica cross to elastic and plastic chilling injuries was examined at the 3rd leaf-stage, the most sensitive stage to chilling during nursery, using a chilling chamber set 11\circ C, 13hrs. 20K lux day/5$^{\circ}C$ night. Seedlings were reared until 35 days after seeding in a 26\circ C, 13hrs. day / 18\circ C night chamber except the period of chilling treatment for 0, 3, 4, 6, 8 or 10 days. The new varieties were approximately twice susceptible to elastic injuries, and thrice susceptible to plastic injuries than the Japonica varieties in the term of chilling duration. Among the variables indicating apparant chilling injuries the reduction in dry matter responded most sensitively and differentiated well the varietal difference in chilling resistance even with shorter chilling period. Sequential aspects of the cause and effect relations involved in the development of the apparant chilling injuries are discussed and a schematic diagram is presented as Fig. 5 in the text.

        • Y Beam형 모노레일의 가이드 레일 및 클램프의 특성과 안전성에 관한 연구

          고형근(Ko H K), 김영순(Kim. Y S), 남대희(Nam D H), 정승연(Jung S Y), 천성욱(Cheon S W) 한국철도학회 2010 한국철도학회 학술발표대회논문집 Vol.2010 No.7

          모노레일은 그동안 과좌식과 현수식으로 분류 되어 왔으나 세계 최초로 도입한 중앙 안내 방식의 인천 월미은하레일은 신개념의 Y Beam을 가이드 레일로 사용한 새로운 형식의 모노레일이라 할 수 있다. Y Beam 은 안내륜을 통해 모노레일의 수평 하중을 전달하는 역할을 담당하고 있기 때문에 수직 하중을 타이어를 통해 전달 받는 콘크리트 바닥 및 강재 Beam과 함께 모노레일의 주행 안전에 없어서는 안 될 가장 중요한 구조물이다. 본 연구에서는 수평 하중을 감당하고 있을 뿐만 아니라 모노레일의 안정과 안내를 함께 보장 하면서 급전선을 지지하는 역할도 동시에 담당하고 있는 Y Beam과 Y Beam을 고정하는 클램프의 특성과 안전성에 대해 고찰하였다. Monorail has been classified as straddled type and suspended type. However, Inchon Wolmi Eunha rail, a center guide type first ever introduced in the world, uses a new concept Y-Beam as guide rail. Since Y-Beam takes horizontal loads of monorail through guide wheels, it is an essential structure for the safe operation along with concrete surface and steel beam which take vertical loads through main tires. This study presents the characteristic and reliability of Y-Beam and Y-Beam fixture, clamp, which are not only taking horizontal loads but also guarantying both guiding and stability of monorail and holding power supply line.

        • Analysis of Power Generation Efficiency and GHG Reduction Effect by Application of Low Temperature Catalyst and High Efficiency Dry Flue Gas Treatment System

          ( Y. S. Yoon ), ( J. S. Bae ), ( E. H. Kwon ), ( H. Y. Park ), ( T. W. Jeon ), ( Y. K. Lee ) 한국폐기물자원순환학회(구 한국폐기물학회) 2018 한국폐기물자원순환학회 춘계학술발표논문집 Vol.2018 No.-

          To achieve energy efficiency improvement is used to lower temperature for emission gas at catalyst inlet, or to reduce/stop using steam to reheat emission gas. Saved energy from this process can be used as power source in order to increase generation efficiency. Dry emission gas treatment, on the other hand, is the technology to increase generation efficiency by using highly efficient desalination materials including highly-responsive slaked lime and sodium type chemicals in order to comply with air pollution standards and reduce used steam volume for reheating emission gas. If dry emission gas is available, reheating is possible only with the temperature of 45℃ in order to expect generation efficiency by reducing steam volume for reheating. Retention energy of emission gas from combustion is calculated by emission gas multiplied by specific heat and temperature. In order to obtain more heat recovery from combustion emission gas, it is necessary to reduce not only exothermic loss from boiler facilities but emission calorie of emission gas coming out of boiler facilities. In order to reduce emission calorie of emission gas, it is efficient to realize temperature lowering for the emission gas temperature from the exit of heat recovery facility and reduce emission gas volume. When applying low temperature catalysts, the energy saving features from 0.03% to 2.52% (average 1.28%). When increasing the excess air ratio to 2.0, generation efficiency decreases by 0.41%. When the inlet temperature of the catalyst bed was changed from 210℃ to 180℃, greenhouse gas reduction results were 47.4, 94.8, 118.5, 142.2 thousand tons-CO<sub>2</sub>/y, CH<sub>4</sub> was calculated to be 550.0, 1100.1, 1375.1, 1650.1 kg-CH<sub>4</sub>/y, and N<sub>2</sub>O was 275.0, 550.0, 687.6, 825.1 kg-N<sub>2</sub>O/y. In the case of high efficiency dry flue gas treatment, reduction of greenhouse gases by the change of temperature 120~160℃ and exhaust gas 5,000 ~ 6,500 m<sup>3</sup>/ton is possible with a minimum of 355,461 ton/y of CO<sub>2</sub> and minimum 4,125 tons of CH<sub>4</sub>/y to a maximum of 6,325 ton/y and N<sub>2</sub>O to a minimum of 2,045 kg/y to a maximum of 3,135 kg/y.

        • Analysis of Power Generation Efficiency and GHG Reduction Effect by Application of Low Temperature Catalyst and High Efficiency Dry Flue Gas Treatment System

          Y.,S.,Yoon,J.,S.,Bae,E.,H.,Kwon,H.,Y.,Park,T.,W.,Jeon,Y.,K.,Lee 한국폐기물자원순환학회 2018 한국폐기물자원순환학회 학술대회 Vol.2018 No.05

          To achieve energy efficiency improvement is used to lower temperature for emission gas at catalyst inlet, or to reduce/stop using steam to reheat emission gas. Saved energy from this process can be used as power source in order to increase generation efficiency. Dry emission gas treatment, on the other hand, is the technology to increase generation efficiency by using highly efficient desalination materials including highly-responsive slaked lime and sodium type chemicals in order to comply with air pollution standards and reduce used steam volume for reheating emission gas. If dry emission gas is available, reheating is possible only with the temperature of 45℃ in order to expect generation efficiency by reducing steam volume for reheating. Retention energy of emission gas from combustion is calculated by emission gas multiplied by specific heat and temperature. In order to obtain more heat recovery from combustion emission gas, it is necessary to reduce not only exothermic loss from boiler facilities but emission calorie of emission gas coming out of boiler facilities. In order to reduce emission calorie of emission gas, it is efficient to realize temperature lowering for the emission gas temperature from the exit of heat recovery facility and reduce emission gas volume. When applying low temperature catalysts, the energy saving features from 0.03% to 2.52% (average 1.28%). When increasing the excess air ratio to 2.0, generation efficiency decreases by 0.41%. When the inlet temperature of the catalyst bed was changed from 210℃ to 180℃, greenhouse gas reduction results were 47.4, 94.8, 118.5, 142.2 thousand tons-CO2/y, CH4 was calculated to be 550.0, 1100.1, 1375.1, 1650.1 kg-CH4/y, and N2O was 275.0, 550.0, 687.6, 825.1 kg-N2O/y. In the case of high efficiency dry flue gas treatment, reduction of greenhouse gases by the change of temperature 120~160℃ and exhaust gas 5,000 ~ 6,500 ㎥/ton is possible with a minimum of 355,461 ton/y of CO2 and minimum 4,125 tons of CH4/y to a maximum of 6,325 ton/y and N2O to a minimum of 2,045 kg/y to a maximum of 3,135 kg/y.

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