http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
光波長이 오이(Cucumis sativus L.) 플러그苗의 生長에 미치는 影響
용영록,전지영,황세진,김일섭,정천순 강릉대학교 동해안지역연구소 2000 東海岸硏究 Vol.11 No.1
This research was carried to find out the optimum artificial light condition for plug seedling production of high quality cucumber through investigating growth response of the seedling by both light wave length and treatment period. The treatment with blue and red fluorescent lamp increased the fresh weight involving hypocotyl and root and controlled the elongation of hypocotyl, compared with other treatments. The 30-day-old seedling treatment with blue and red light for 12 hours showed that vegetative growth including root, stem and leaves was better than that of seedling treated with other lamps. Seedling under blue and red light for 12 hours grew 60.0mm and 0.55g in length and weight of hypocotyl. respectively, Hypocotyl length and weight were 44.9mm and 0.62g when seedling was grown under above light condition for 6 hours. Total chlorophyll contents of hypocotyl were highest in the light mixing treatment, and this accelerated greening. Morphological characteristics by investigating cross and longitudinal section of 30-day-old cucumber seedling treated with the mixing fluorescent lamps indicated that epidrmis tissues were usually single layer and thicker, resulting in small, compact and non-intercellular spaces of cells. On the other hand, epidermis tissues of the control composed of large, longer and round cells and cortex tissues showed large intercellular spaces between cells. Longitudinal section of photo-treated hypocotyl showed that there were more shorter cells and non-intercellular spaces of cells than untreated tissues. As a result, blue and red light mixing treatment controled the cell elongation of seedling hypocotyl, resulting in shortening hypocotyl of cucumber seedling.
境界要素法에 의한 3次元 基礎一地盤 相互作用 시스템의 地震解析
權映錄,宋始榮,姜圓鎬,崔光圭,柳又秀 동아대학교 공과대학 부설 한국자원개발연구소 1990 硏究報告 Vol.14 No.1
In this study, the seismic analysis procedure of foundation-soil interaction system is presented. With the assumption of isotropic material properties and infinitesimal strain theory, the boundary element models of three dimensional foundation plate an semi-infinite soil medium are coupled together, using the compatiblity condition of displacements and equilibrium condition of surface tractions on the contact surface. Through the results of the examples in which the seismic responses of the foundation subjected to the SV-wave and the P-Wave, it is shown that the translational motions are decreased and the rocking motion is occured in higher frquency range.
종자 Priming 반응 Indicator로서 호흡부산물 특성에 관한 연구
용영록,전지영 강릉대학교 동해안지역연구소 2000 東海岸硏究 Vol.11 No.1
This study was conducted to investigate effects of salt priming on germination of muskmelon seeds and to find out the optimum condition for priming by comparing respiration by-products(carbon dioxide) produced during treatment. Germination rate was 96% and T50 was reduced to 1.9 days in seeds with KNO3 100mM and air supply, compared 84% and 3.7 days of the rate and T50 in nontreated seeds, respectively. Adding KNO3 200mM with oxygen, nitrogen and air supply to priming solutions made priming more effective at improving germination responses. However in more than 4 days treatment with nitrogen. priming effects seriously decreased. When KNO3 300mM applied with oxygen and air, germination rate was improved. The more concentrations of KNO3 applied to primling solution, the more CO2 produced, resulted in inducing maximum CO2 production in KNO3 300mM applications. There were not found significant correlations between respiration by-products and germination rate.
박연주,남영란,전병록,오남순,인만진 한국응용생명화학회 2003 Applied Biological Chemistry (Appl Biol Chem) Vol.46 No.4
마늘이 함유되어 있는 기능성 두부를 제조함에 있어 마늘의 첨가량이 두부의 품질과 저장성에 미치는 영향을 조사하였다. 건조 대두를 기준으로 마늘을 5-20% 첨가하여 제조한 두부의 수율, 물성 및 저장성을 마늘을 첨가하지 않고 제조한 일반두부와 비교하였다. 두부의 수율은 마늘의 첨가량에 비례하여 다소 감소하였으나 그 영향은 미미하였다. 마늘의 첨가량이 5∼10%인 경우 두부의 물성 중 견고성이 통계적으로 유의하게 증가하였으며, 마늘을 20%사용한 두부는 견고성, 부착성, 응집성, 탄성, 씹힘성이 통계적으로 유의하게 감소하였다. 제조한 두부를 15℃로 보관하면서 pH와 총균수의 변화를 측정한 결과 마늘의 첨가량에 비례하여 두부와 두부 침지액에서 pH 하락과 미생물 생육이 효율적으로 지연되었다. 두부 제조시 마늘의 첨가량은 5∼10%가 적당하였다. The effect of garlic addition on quality and shelf-life of soybean curd was investigated. The yield of garlic soybean curd slightly decreased in proportion to amount of garlic added. In the case of texture, hardness of the garlic, soybean curd increased when 5~10% garlic wat added, whereas hardness, adhesiveness, cohesiveness, springiness and chewiness significantly decreased in the case of 20% garlic added. Microbial counts of soybean curd stored in sterilized distilled water as tofu-immersion solution increased, whereas pH decreased during storage at 15℃. During all storage periods, microbial counts of the soybean curds containing garlic were always lower than that of the ordinary soybean curd. These results imply that garlic is a useful additive in suppressing the proliferation of aerobic microorganism and has a potential use in extending the shelf-life of soybean curd. According to yield, textural properties and shelf-life data, the suitable concentration of garlic was around 5~10%.
Rog-Young Kim,Jae E. Yang 한국토양비료학회 2014 한국토양비료학회지 Vol.47 No.1
Agricultural soils surrounding mine areas in South Korea are often contaminated with multiple metals such as Cd, Pb and Zn. It poses potential risks to plants, soil organisms, groundwater, and eventually human health. The aim of this study was to examine the changes in phytoavailability of Cd, Cu, Pb and Zn after application with calcined eggshell (CES; 0, 1, 3, and 5% W/W) in an agricultural soil contaminated by mine tailings. The contents of Cd, Cu, Pb and Zn in soils were 8.79, 65.4, 1602, and 692 mg kg<SUP>-1</SUP> (aqua regia dissolution), respectively. The experiments were conducted with lettuce (Lactuca sativa L. var. longifolia) grown under greenhouse conditions during a 30-d period. NH₄NO₃ solution was used to examine the mobile fraction of these metals in soil. The application of CES dramatically increased soil pH and inorganic carbon content in soil due to CaO and CaCO₃ of CES. The increased soil pH decreased the mobile fraction of Cd, Pb, Zn: from 3.49 to < 0.01 mg kg-1 for Cd, from 79.4 to 1.75 mg kg-1 for Pb, and from 29.6 to 1.13 mg kg<SUP>-1</SUP> for Zn with increasing treatment of CES from 0 to 5%. In contrast, the mobile fraction of Cu was increased from 0.05 to 3.08 mg kg<SUP>-1</SUP>, probably due to the formation of soluble CuCO₃ 0 and Cu-organic complex. This changes in the mobile fraction resulted in a diminished uptake of Cd, Pb and Zn by lettuce and an increased uptake of Cu: from 4.19 to < 0.001 mg kg<SUP>-1</SUP> dry weight (DW) for Cd, from 0.78 to < 0.001 mg kg-1 DW for Pb, and from 133 to 50.0 mg kg<SUP>-1</SUP> DW for Zn and conversely, from 3.79 up to 8.21 kg<SUP>-1</SUP> DW for Cu. The increased contents of Cu in lettuce shoots did not exceed the toxic level of > 25 mg kg<SUP>-1</SUP> DW. The mobile contents of these metals in soils showed a strong relationship with their contents in plant roots and shoots. These results showed that CES effectively reduced the phytoavailability of Cd, Pb, and Zn to lettuce but elevated that of Cu in consequence of the changed binding forms of Cd, Cu, Pb, and Zn in soils. Based on these conclusions, CES can be used as an effective immobilization agent for Cd, Pb and Zn in contaminated soils. However, the CES should be applied in restricted doses due to too high increased pH in soils.
Young-Rog Yeoung,Cheol-Soo Yoon,Byung-Sup Kim 한국원예학회 2005 Horticulture, Environment, and Biotechnology Vol.46 No.1
This study was conducted to determine the effects of fungicide diniconazole on leaf morphology and chlorophyll concentration in Chinese cabbage (Brassica pekinensis cv. Garak). Seeds were planted in 162-cell trays, grown for 25 days, and then transplanted to plastic pots. Diniconazole at 100 and 1000 ㎎ㆍL?¹ was applied as foliar sprays to greenhouse-grown Chinese cabbage at 2 and 3 weeks after transplanting. Morphology, chlorophyll concentration, and cell arrangement in leaves were determined at 2 weeks after treatments. Leaves treated with diniconazole had higher contents of chlorophyll a, chlorophyll b, and total chlorophyll than the control. Examination of treated leaves by using a light microscope revealed leaf morphological changes which included further reduction in leaf area, decrease in cell width, and increase in leaf trichome formations. Also, in a comparison of cell arrangement, treated leaves showed tightly packed and smaller mesophyll cells, whereas control leaves showed loosely packed and larger mesophyll cells. As a result, this study suggests that diniconazole has non-target plant growth-regulating activity on Chinese cabbage, probably by affecting gibberellin-like hormone biosynthesis.