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        검색결과 30

        7.
        2015.10 구독 인증기관·개인회원 무료
        The post-hibernated queens of Korean native bumblebee, Bombus hypocrita saporoensis were collected in Jeong-Sun, Korea to investigate their ecological characteristics and reared under the laboratory conditions; 27℃, 65% R.H. and darkness. The average weight of collected queens was 0.87±0.14g and 0.8g class was most abundant (34.7%) among eight weight classes. The rates of colony initiation, colony foundation and progeny-queen production were 76.3%, 60.0% and 42.5%, respectively. The durations up to colony initiation and colony foundation were 12.0±6.7 days and 49.3±2.4 days, respectively. The duration up to first worker, male and queen emergence were 22.2±3.0 days, 63.4±6.5 days and 63.5±8.7 days, respectively. The number of progenies was 108.5±26.0 workers, 186.7±70.7 males and 39.1±30.3 queens. The longevity of colony founded queen was 90.2±19.9 days whereas that of non-colonized queen was 35.9±30.3 days. Copulation time was 29.5±9.6 min. The number of eggs per egg cell laid new queen was 9.3±2.3 grains. An egg shaped as banana and it’s size was 1.12±0.10 mm in a width, 3.54± 0.16 mm in a length and 2.26±0.34 mg in a weight.
        8.
        2015.10 구독 인증기관·개인회원 무료
        Insect is an important player in the ecosystem as a prey for animals. Moreover, they are a valuable candidate food source for rearing animal. Tenebrio molitor (Coeloptera: Tenebrionidae) larvae are known as a good food source with high protein, unsaturated fatty acid, minerals. Therefore, it has strong potential to substitute the conventional meat consumption. To utilize T. molitor as a feed, the standard mass-rearing protocol is required. To make standard mass-rearing protocol, we tested different temperature(17.5, 20, 22.5, 25, 27.5 and 30°C) conditions for egg, larvae, pupae and adult T. molitor to identify the optimal rearing condition. Hatching was occurred within 15~32.5°C range. However, 17.5~27.5°C was required to get more than 70 % hatching rete. When the eggs were treated in 22.5~27.5°C, all eggs were hatched within 10 days. As larval development, shorter developmental period, higher pupation and eclosion rates were observed within 25~27.5°C temperature range. In addition, we compared the number of egg, oviposition duration and time required to start egg-laying. The minimum egg-laying(258.40±10.86) was observed at 17.5°C, but the maximum(749.10±7.45) was at 27.5°C. The maximum oviposition duration (137.00±12.73 day (mean±S.D.)) was achieved at 27.5°C, but the minimum (87.50±3.54 day (mean±S.D.)) was at 30°C. The time required to start egg-laying was less than 10 days at 17.5, 27.5, and 30°C. To consider all the factors, we concluded that the optimal temperature is 27.5 °C.
        9.
        2014.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study aims to identify the effect of home physical therapy on patients who left the hospital after total knee arthroplasty, compared to the Daily living group, when it was applied to them, under the guidance of physical therapists. As research subjects, 20 patients that were scheduled to leave the hospital after unilateral total knee arthroplasty, were chosen, and they were randomly divided into a home physical therapy group(10 patients) and an Daily living group(10 patients) in order to conduct an experiment. During the 4-week research, home physical therapy was offered for 40 mins once for 5 days a week, and muscular strength, gait components were measured. For muscular strength, quadriceps muscle strength, hamstring muscle strength were measured, and as gait components, endurance, speed, step time, single-limb support were analysed. For this experiment, pre- and post-measurement were performed, and collected data were analyzed using SPSS ver. 18.0 statistical program. From the analysis of data, the following study results were obtained. Home physical therapy group and Daily living group both showed significant improvements in quadriceps muscle strength, hamstring muscle strength, and quadriceps muscle strength, hamstring muscle strength of home physical therapy group more significantly improved than Daily living group's. In relation to gait components, gait endurance, gait speed, step time significantly improved in both of home physical therapy group and Daily living group, whereas home physical therapy group only showed significant improvements in single-limp support. According to the comparison between two groups, gait speed, single-limp support and step time improved more significantly in the home physical therapy group than in the Daily living group. In conclusion, positive results were revealed in both home physical therapy group and Daily living group, with regard to muscular recovery of lower limbs of patients discharged from the hospital after total knee arthroplasty and walking, but considering the comparison results between two groups, it seems that applying home physical therapy is more effective than maintaining a daily life.
        4,000원
        10.
        2014.10 구독 인증기관·개인회원 무료
        Bumblebees are important pollinators of crops and wildflowers. Bumblebees generally produce one generation per year. One of the key stages for year-round rearing of bumblebees is breaking diapause. To evaluate the effects of a combination method of CO2-narcosis and cold treatment to break the diapause of B. ignitus and B. terrestris queens, we determined whether this method affected their ability to establish a colony after the diapause break. The diapause treatment regimes that were utilized were CO2(CO2– narcosis), CT-1M(cold treatment at 5°C for 1 month), CT-1M-CO2(CO2–narcosis after cold treatment for 1 month), CT-2M-CO2(CO2–narcosis after cold treatment for 2 months), CT-2M (cold treatment for 2 months), CT-2.5M-CO2(CO2–narcosis after cold treatment for 2.5 months) and CT-2.5M (cold treatment at 5°C for 2.5 months). In view of the effects on the colony developmental characteristics of B. ignitus queens, the most favorable diapause treatment was CT-1M-CO2. A combination method of CO2– narcosis and cold temperature treatment yielded better results than that of single CO2–narcosis or cold temperature treatment on the colony development of diapause-broken B. ignitus queens. In the case of B. terrestris queens, we concluded that a combination method of CO2 and cold temperature treatment yielded better results than that of a single cold-temperature(up to2 months) treatment. In conclusion, the findings of the present study indicated that the combined application of CO2 and cold temperature was a favorable method for the colony development of diapause-broken B. ignitus and B. terrestris queens compared with only CO2–narcosisorcoldtemperaturetreatments. A combination method of CO2 and cold treatment reduced the side effect of CO2–narcosis and shortened the duration of cold treatment by at least 1month.
        11.
        2008.10 구독 인증기관·개인회원 무료
        Disulfide bond formation, reduction and isomerization are important posttranslational modification in proteins that occur in most, if not all, living organisms. In eukatoyes, disulfide bond in substrate proteins are primarily formes by ERO1 and PDI. ERO1, oxidized by molecular oxygen, acts as a specific oxidant of PDI, which then makes disulfide bonds in folding proteins oxidized directly. It means that ERO1 plays an essential role in setting the redox potential in the ER, and the regulation of Ero1p activity is critical to maintain redox homeostasis and proper ER folding activity. We have isolated and analysed a endoplasmic reticulum oxidoreductase (ERO1) from Bombye mori. It apperas that both an N-terminal CxxxxC motif and a C-terminl CxxCxxC motif are necessary for Ero1p fuction. In vivo, the result of the 5day of 5th instar larvae by RT-PCR and Real-Time PCR shows that posterior silkgland, skin and mid silkgland are revealed more than rhose of other tissues. The same result for tissue distribution of transcripts is appeared about ERO1 and PDI. In Bombyx mori, ERO1 is also supposed to correlate with PDI. Afterwards, more experiments are needed to figure out accurate interrelation between ERO1 and PDI.
        12.
        2008.10 구독 인증기관·개인회원 무료
        Recently Transgenesis was achieved in Bombix mori. For stable and effective transgenesis in B.mori, B.mori cytoplasmic actin gene (BmA3) promoter was used to expression of marker gene, the green fluorescent protein(GFP). Green fluorescent protein expression for selection of transformants was visible in all larval, pupal, and adult tissues but, unexpectdly, was not detectable in embryos. So, it spend times and money on rearing of silkworm. Furthermore, the BmA3 promoter is predominantly active in the midgut, which makes it difficult to reliably identify transformants since autofluorescence of many insect foods can mask low-level fluorescence and only allows the detection of strongly expressing individuals with potentially multiple insertions. Therefore, we need more intensely promoter than BmA3 promoter for selected by expression of GFP in embryos and selected by reliable expression of GFP in larvae. We performed dot blot hybridization to develop strong promoter. Nine differentially expressed clones were isolated and we focused one clone of them which has high similarity with heat shock protein 70 gene from D.melanogaster. We named it as bHSP70 (Bombyx mori heat shock protein 70). Expression from the hsp70 promoter was strong and heat shock-dependent. And Drosophila hsp70 promoter appears useful for regulating expression of Exogenous DNA. So, we analyzed transcriptional activity of promoter with bHSP70 gene by using dual luciferase assay system. bHSP70 promoter has about 264 folds more intensely than BmA3 promoter. Also, when bHSP70 promoter treated heat shock(42℃), transcriptional activity incresed 2 times more than normal condition. Therefore, we suggest that bHSP70 promoter is more effective candidate for stable transformation and selection of transformants.
        14.
        2012.12 KCI 등재 서비스 종료(열람 제한)
        Studies in Modern Grammar 70, 107-127. It is known that VP-ellipsis and VP-anaphora phenomena are typologically dependent. The goals of this paper is to offer a unified algorithm for English VP-ellipsis and Korean VP-anaphora, and show how the suggested resolution algorithm, adopted from Jager (2010), can account for these two in a uniform way.
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