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        검색결과 10

        1.
        2017.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The purpose of this study was to compare and analyze the difference of the ankle joint movements during landing. Seven adult males voluntarily participated in the study and the average foot size of the subjects was 269.8 mm. Image analysis equipment and the ground reaction force plate (landing type) was used to measure th kinetic variables. As a result of this study, it was confirmed that the vertical ground reaction force peak point appeared once in the barefoot with forefoot, while two peak points appeared in the barefoot and functional shoe foot with rear foot landing. About ankle angle, fore foot landing ankle angle, the average with bare foot landing was -10.302° and the average with functional shoe foot landing was -2.919°. Also about rear foot landing, ankle angle was 11.648° with bare foot landing and 15.994° with functional shoe landing. The fore foot landing, ankle joint force analysis produced 1423.966N with barefoot and 1493.264N with functional shoes. But, the rear foot landing, ankle joint force analysis produced 1680.154N with barefoot and 1657.286N with functional shoes. This study suggest that the angle of ankle depends on the landing type and bare foot running/functionalized shod running, and ankle joint forces also depends on landing type.
        4,000원
        2.
        2014.11 구독 인증기관·개인회원 무료
        4-isopropyl-2,6-bis(1-phenylethyl)aniline 1 (KTH13-AD1) is a metabolite of Cordyceps bassiana that has been traditionally used to treat various inflammatory disease. Even though it has the magnificent pharmaceutical potential, there was not much understanding on its anti-inflammatory actions. Therefore, this study was aimed to determine the anti-inflammatory effects of KTH13-AD1. We found that KTH13-AD1 suppressed nitric oxide (NO) and reactive oxygen species (ROS) production in lipopolysaccharide (LPS)- or sodium nitroprusside (SNP)-treated macrophages (RAW264.7 cells). Similarly, mRNA expression of inducible NO synthase (iNOS) and tumor necrosis factor-a (TNF-a) analyzed by RT-PCR and real-time PCR was also reduced by this compound. Interestingly, KTH13-AD1 also strongly diminished the levels of NF-kB-mediated luciferase activities and nuclear translocated NF-kB family proteins. In agreement with these, KTH13-AD1 suppressed the upstream signaling pathway for NF-kB activation including IkBa, IKKa/b, AKT, p85/PI3K and Src in time- and dose-dependent manners. Therefore, these results strongly suggest that KTH13-AD1 has a strong anti-inflammatory activity via suppression of the NF-kB signaling pathway.
        3.
        2010.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Low back pain is a common phenomenon among the golfers. In an attempt to understand low back pain, the kinematic changes and golf swing motion analysis has been performed to focus on lumbar spine in pro. golfers. According to the swing pattern, significant variations of the lumbar joint forces and loads has related with muscles activities so the motion analysis of lumbar spine were discussed. The purpose of this study was to analyze motion of lumbar spine and it was to compare joint force during golf swing in pro. golfers. The swing motion of the subjects was tracked using a 3D motion analysis system by Motion Analysis Ltd. and SIMM software. The angle changes of lumbar spine rapidly in vx direction during the top back swing and the finish and in vy direction during the follow through and in vz direction during the down swing and the impact(Subject A). The angle changes of lumbar spine rapidly in vx direction during the top back swing and in vy direction during the down swing, the impact and the follow through and in vz direction during the down swing(Subject B). In conclusion, subject A and B both show sudden angle changes between 1st-3rd lumbar spine and 4th-5th lumbar spine during the stage from address to top back swing which caused by over upper body twisting.
        4,000원
        4.
        2010.10 구독 인증기관·개인회원 무료
        Nokona regalis (Butler) and Toleria romanovi (Leech) (Lepidoptera: Sesiidae) are economically important pests of grape in northeast Asia. We compared the overwintering, damage and seasonal flight activities of these two species in Korean vineyards. Mature larvae of N. regalis overwintered in the infested shoots of grape, while T. romanovi overwintered as mature larvae enclosed within a cocoon in the soil. Larvae of the former species fed primarily in grape shoots (97.2%), whereas larvae of the latter species burrowed into main trunks (57.4%) and branches (40.4%), causing significant damage and frequent mortality. The seasonal fluctuation of male catches was monitored with pheromone traps in 2010. Male moths of N. regalis were present from late May until middle June, and peak abundance occurred in early June. T. romanovi males were trapped from early June to early August with peak catch in middle July in Suwon.
        5.
        2017.05 서비스 종료(열람 제한)
        Background : In recent, a nationwide decrease in ginseng cultivation area and production is observed, and as the sales of ginseng decreases due to the economic downturn, the ginseng industry in Korea is going through more and more difficulties. However, sales of young ginseng, which are ready for the market after a short-term cultivation - 25 to 45 days - of 1 year old ginseng seedlings or 2 - 3 year old young ginseng in greenhouses and plant factories without using any chemical fertilizers, in large grocery chains and online shops is increasing. However, proper studies on cultivation of young ginseng in greenhouses are yet to be conducted, and thus, experiencing several issues including the cost burden of bed soil and disease occurred from reuse of the soil. Therefore, this study is to provide solutions for farmers cultivating young ginseng by determining the optimal type and amount of bed soil for box culture. Methods and Results : To determine the optimal type of bed soil for cultivation of young ginseng, six types of bed soil were produced by blending bed soil specialized for ginseng, granite residual soil and leaf mold in different ratios. To determine the optimal amount of bed soil for box culture of young ginseng, 1 year old ginseng seedlings are planted in three boxes - each in size of 52 ㎝ × 36.5 ㎝ × 9 ㎝ (W × L × H) filled with soils of 6 ℓ, 7 ℓ and 8 ℓ for an experimentation. Growth and development of 45-day old young ginseng showed satisfactory progress in the following order: 100% commercially available bed soil > 80% commercially available bed soil + 20% granite residual soil > 60% commercially available bed soil + 20% granite residual soil + 20% leaf mold, while the gross weight of below-aerial parts showed the same result. Conclusion : The optimum type of bed soil for greenhouse cultivation of young ginseng is the commercially available bed soil specialized for ginseng cultivation. However, the young ginseng showed relatively satisfactory growth and development in mixed bed soil - 60% commercially available bed soil + 20% granite residual soil + 20% leaf mold - and the growth and development of young ginseng were most satisfactory when the box (52 ㎝ × 36.5 ㎝ × 9 ㎝, W × L × H) was filled with 8 ℓ bed soil.
        6.
        2017.05 서비스 종료(열람 제한)
        Background : With the recent increase in the area of ginseng cultivation in greenhouses, demand for studies of proper cropping patterns in direct seedling of ginseng and varieties of cultivation are increasing, and the needs for clean production of quality ginseng in greenhouses are emerging in connection with the consumer demand for pesticide-free ginseng and the supply and demand of ginseng seedling for cultivation of young ginseng. Therefore, this study is to provide baseline data in improving of quality of ginseng cultivated in greenhouses by examining the contents of ginsenoside in ginseng cultivated in different cropping patterns and different varieties. Methods and Results : As a result of examining the contents of ginsenoside in 3-year old, direct seedling ginseng cultivated in greenhouses in different depths – 10 ㎝, 20 ㎝ and 30 ㎝ - and width – 90 ㎝, 100 ㎝, 110 ㎝ and 120 ㎝ - of furrows, the contents of ginsenoside showed little differences by the depths of furrow in the furrow width of 90 ㎝ but, the highest content of ginsenoside Rb1 was observed in the furrow width of 120 ㎝ and depth of 20 ㎝, while the ginsenoside contents were high in the furrow depth of 20 ㎝ and width of 100 ㎝ and 120 ㎝. The contents of ginsenoside in different varieties of direct seedling cultivation in greenhouses were greater in the following order: Geumgin > Geumsun > Chunpoong, while the contents of ginsenoside Rb1 were observed to be superior in Sunhyang, Gopoong and Geumseon and the contents of ginsenoside Rb2 were greater in the order of Geumgin > Guemsun > Cheonpoong. Conclusion : Based on the results, the contents of ginsenoside in different cropping patterns of direct seedling cultivation in greenhouses were higher in lower depths of furrow - 10 ㎝ and 20 ㎝ - at furrow widths wider than 100 ㎝. The contents of ginsenoside in different varieties of direct seedling cultivation in greenhouses were higher in varieties of Geumjin, Geumsun and Chunpoong.
        7.
        2016.05 서비스 종료(열람 제한)
        Background : New ginseng variety “Geumwon” is appropriate for the cultivation in Chungnam. As an effort to develop new ginseng variety for regional specialization, it was collected from the Geumsan ginseng fields, selected and fixed and then was registered as new ginseng variety in 2015 through the verification of production capacity, farm demonstration and regional adaptation test. It is excellent in underground growth, disease-resistance and yield-ability compared to candidate varieties. Methods and Results : Regional adaptation tests were conducted for new ginseng variety “Geumwon” in 3 regions(i.e. Geumsan, Gochang and Icheon). The results suggested that the leaf length and width of 2-year old ginseng was 7.9cm and 4.2cm in 3 regions on an average basis. Anthrax incidence rate was about 2.5%, which was smaller than that of candidate variety(3.6%), and the underground root weight was 5.6g, which was 34% higher than that of candidate varieties. The leaf length and width of 3-year old ginseng was 9.4cm and 4.5cm, and anthrax incidence rate and leaf soot incidence rate was 0.8% and 1.2% respectively, which was lower than that of candidate varieties. The the root weight, root diameter and hull length of “Geomwon” were superior to that of candidate varieties by about 24%, 6% and 9% respectively. In addition, red discoloration and root rot incidence rate were also lower than that of candidate varieties. The growth of 4-year old ginseng was also superior to that of candidate varieties in the order of Geumsan, Ichoen and Gochang, and the anthrax and leaf soot incidence rate was also lower than that of candidate varieties(about 2.2.% and 2.3 %, respectively). Conclusion : The results of this study suggested new ginseng variety “Geumwon” is easy to cultivate in Chungnam because of its superior underground growth and excellent quality, and it was also evaluated to be an excellent variety that would contribute to the specialization of the ginseng cultivated in Geumsan.
        8.
        2016.05 서비스 종료(열람 제한)
        Background : In recent years, as the ginseng cultivation area using vinyl house is increasing, the demand of farmhouses for the studies of appropriate direct seeding cultivation and ginseng varieties for vinyl house cultivation is increasing, and there is a necessity to produce high quality clean ginseng in vinyl house in tandem with the consumers’ demand for pesticide-free ginseng and the supply-demand of ginseng seedling for sprout ginseng. Thus, the authors of this study analyzed the change of photosynthetic properties according to the cropping pattern and varieties with the aim to use the results of this study as the primary date for improving the quality of ginseng cultivated in vinyl house. Methods and Results : The authors analyzed the change of photosynthetic properties for the 3-year old ginseng cultivated through direct seeding according to the ginseng field levee height (10, 20, 30cm) and width (90, 100, 110, 120cm). The results suggested that with an increase in light intensity, the photosynthesis tends to increase regardless of levee height and width. When the levee width was 90cm, the photosynthesis increased as the levee height was reduced and it increased as the levee height increased when the levee width was 100cm. The photosynthesis was high when the levee height was 20cm for the levee width of 110cm and 120cm. The photosynthesis was analyzed for 11 varieties of 3-year old ginseng cultivated through direct seeding. The results suggested that the photosynthesis tends to increase as the light intensity increased in all 11 varieties, and the photosynthesis was the highest at 500PAR(ray source: 3.23umolCO2m-2s-1㎛ol) in the order of Cheonpoong, Yeonpoong, Cheongson and Sonwoon. Conclusion : The results of this study suggested that the photosynthesis according to the direct seeding cultivation in vinyl house increased as the levee height decreased for the levee width of 90cm and it was high when the levee height was 20cm for the levee width of 120cm. For the ginseng variety, Sonwon and Cheonpoong showed the highest photosynthesis.
        10.
        2004.09 KCI 등재 서비스 종료(열람 제한)
        This study was conducted to obtain basic information of growth, chlorophyll, and Na+~;and~;K+ content of rice (Oryza sativa L.) seedlings after transplanting in different NaCl conditions. Plants grown in pots for 8 days after germination were grown for 10 days after transplanting in 50 and 100 mM NaCl concentrations. At higher NaCl concentration, plant height, root length, dry weight and chlorophyll content were reduced with NaCl stress. Among rice cultivars, the shoot dry weight of Gancheokbyeo, Janganbyeo and Hwasungbyeo, and the root dry weight of Janganbyeo, Gancheokbyeo and Juanbyeo showed relatively low reduction compared to the other rice cultivars at 100 mM NaCl stress. The Na+ content in seedling rapidly increased with the increase of NaCl concentration but K+ contents decreased. There was a significant relationship between Na+ content and shoot and root dry weight after transplanting rice seedlings to saline conditions. The shoot and root dry weight showed highly negative relationship with the Na+/K+ ratio in saline conditions.