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        검색결과 18

        2.
        2020.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        We report the structural characterization and electric heating performance of carbon thin films (CTFs), which were prepared from negative-type SU-8 photoresist by deep UV exposure and following carbonization. The prepared CTFs were found to have pseudo-graphitic carbon structures containing partially graphite domains in the amorphous carbon matrix. The CTFs showed a very smooth surface morphology with a roughness of 0.42 nm. The 107 nm-thick CTFs exhibited an excellent electric heating performance by attaining a high maximal temperature of 207 °C and a rapid heating rate of 13.2 °C/s at an applied voltage of 30 V. Therefore, the CTFs prepared in this study can be applied as electrode materials for high-performance electric heaters.
        4,000원
        3.
        2016.10 구독 인증기관·개인회원 무료
        Cryoprotectant is a substance used to protect biological tissue from freezing injury. However, there was few research paper on application of cryoprotectant in food stuff although its benefits was approved from the biological cell tissues. The objective of this study was to investigate the effect of the sugar addition as a cryoprotectant on the properties of frozen soybean sprouts. Before freezing process, the samples were blanched at 100°C for 1 min to observe the influence of blanching treatment. The blanched or non-blanched soybean sprouts was immersed in sugar solution as cryoprotectant, and continuously, the samples were frozen at -18°C for 24 h. Their physicochemical properties such as drip loss, hardness, color and cellular tissue were analyzed after thawing in running water. In our study, the drip loss of blanched sample without sugar was 43%, and comparatively, blanched one with sugar was 20% which was the lowest value among all samples. There was no significant difference of hardness between sample with sugar and without sugar. From our results, it was supposed that sugar can protect the soybean sprouts during freezing process regardless blanching process.
        4.
        2016.10 구독 인증기관·개인회원 무료
        In this study, we investigated the effects of different pre-treatment conditions such as blanching and drying process to improve its quality. Bracken samples were treated by drying (70°C for 40 min), blanching (100°C for 2 min) or mixed (blanched and dried [BD]), respectively. These treated samples were analyzed for their physicochemical properties such as pH, color and microbial growth. The pH of bracken increased from 6.6 to above 6.9 through all treatment. From color observation, the L* and b* values increased after drying process, whereas, the a* values decreased. Water contents of bracken decreased by about 80% from 93% through drying process. After samples treated by pre-treatments, hardness increased, especially after drying process. For the microbial study, raw bracken had 5.6 log CFU/g of aerobic bacteria and 2.8 log CFU/g of total coliform. Blanched and BD samples had about 2 log CFU/g of aerobic bacteria and 1.8 log CFU/g of total coliform, acceptable for food. From our results, it is concluded that the properties of blanched samples had similar to raw samples to guarantee for microbial safety. From the obtained results, the blanching process without drying process is necessary to apply freezing process as pretreatments.
        5.
        2016.04 구독 인증기관·개인회원 무료
        There are a lot of types of wild vegetables such as Colocasia esculenta (L.) Schott stem in Korea. However, the consumption of these wild vegetables is restricted because their storage decreased dramatically after harvest. To maintain original quality of vegetables, pre-treatments such as blanching and drying are important. But conditions for these treatments were still not optimized for many vegetables including Colocasia esculenta (L.) Schott stem. Thus, the objective of this study was to set up an optimal pre-treatment method for freezing storage. Colocasia esculenta (L.) Schott stems were peeled and cut equally (10 cm) for sample preparation. Dried samples (D) were dried at 90℃ for 3 h. Blanched samples (B) were blanched in hot water at 100℃ for 2 min. Blanched and dried samples (BD) were blanched and dried as same protocol. Physicochemical properties were analyzed to evaluate the quality including texture, moisture content, total color difference and viable cell count. Raw sample had 6.85 kg/cm 3 of hardness and 78.75 of chewiness whereas B was 6.83 kg/cm 3 of hardness and 7.8 of chewiness. B had the similar value compared to raw samples. Moisture content of raw sample was 94.4% and that of B was 94.1%, though there were not any significant differences between them. ΔE value of B showed lower value than those of the others. Viable cell counts and total coliforms were not detected after treatment, while raw sample had 5.39 log CFU/g of viable cell count without total coliform. Therefore, pre-treatments are essential for microbial safety of samples. All results considered, it is supposed that blanching is the optimal pre-treatment to sustain its original quality of Colocasia esculenta (L.) Schott stems before freezing.
        6.
        2012.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The purpose of this study was to analyze lower limb muscle activity and 3D motion analysis according to change foot arch height during walking. We selected 9 young and healthy people who have been normal foot. And we selected 7 young and healthy people who have been flatfoot. So, people were divided into 2 groups and walked platform during 2 minutes twice for checked by 3D motion analysis. These data were characterized by EMG measurements of three muscles( tibialis anterior, medial and lateral gastrocnemius) while they were walking. The collected data were analyzed by Independent t test using the SPSS statistics program(Ver 12.0). In foot arch change, there were no significant difference in three muscles 3D motion analysis also found that there were no significant difference in joint angles. In this study was to analyze lower limb muscle activity and 3D motion analysis according to change foot arch, but there were no significant difference in 6 muscles neither joint angles.
        4,000원
        7.
        2011.10 구독 인증기관·개인회원 무료
        The time-zone of pollinating activity relative to numbers released of Apis mellifera in the strawberry(Janghui var.) houses was together from 9A.M. to 4P. M., and the peak time of pollinating activity was 1P.M.. The effects on pollinating activity relative to the comb numbers in the honeybee hive released in the strawberry houses were ordered 5bee combs(11,000heads), 3bee combs(6,600heads) and 4bee combs(8,800heads). The rate of workers lost in A. mellifera hives with 5bee combs during the strawberry cultivating period were lower than those of 3bee combs and 4bee combs. The rates of fruit set by pollinating activity relative to the comb numbers in the honeybee hive released in the strawberry houses were same level with over 98%. The fruit qualities; number of seeds, sugar content and rate of normal fruit set were same level, but fruit weights was recorded 5bee combs with 40.8g, and 4bee combs and 3bee combs were showed with 37.8g. The marketing income of 5bee combs was 8% higher than that of 4bee combs and of 3bee combs, respectively.
        8.
        2011.05 구독 인증기관·개인회원 무료
        The time-zone of pollinating activity relative to numbers released of Apis mellifera in the strawberry(Seolhyang var.) houses was together from 9A.M. to 4P. M., and the peak time of pollinating activity was 11A.M.. The effects on pollinating activity relative to the comb number in the honeybee hive released at the strawberry houses were ordered 5bee combs(11,000heads), 4bee combs (8,800heads) and 3bee combs (6,600heads). The rate of workers lost in A. mellifera hives with 5bee combs and 4bee combs during the strawberry cultivating period were lower than that of 3bee combs. The rates of fruit set by pollinating activity relative to the comb number in the honeybee hive released at the strawberry houses were same level with over 98%. The fruit qualities; No. of seeds, sugar content and rate of normal fruit set were same level, but fruit weights were ordered 5bee combs in 37.2g, 4bee combs in 35.6g and 3bee combs in 32.6g. The marketing incomes of 4bee combs and 5bee combs were 9% to 13% higher than that of 3bee combs, respectively.
        9.
        2011.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The purpose of this study is to investigate whether there are differences in physique characteristics between the excellent domestic player groups in each sport player's, to prevent epidemiologic damage of musculoskeletal system and to provide fundamental data to improve performances for players. This study has performed for total 60 student players from Y University in Yongin, Gyeonggi-do, consists of 20 Kendo players, 20 Judo players and 20 Taekwondo players. We measured the length and circumference of arm, leg, body using Martin anthropometer to collect the data for 3 groups. There was significant difference in lower left arm length between player groups(p<.01), and Kendo players' right side femoral were longer than other 2 groups for leg length measurement(p<.01). Judo players' circumference for right/left stretched arm/bent upper arm were thicker than other 2 groups(p<.01). Taekwondo players' chest circumference were smaller than other 2 groups(p<.01), and Taekwondo players' right/left femoral circumference were thinner than other 2 groups(p<.05). From this study, it was found that there are physique characteristics differences between the Kendo, Judo and Taekwondo player groups. This indicates that repeated exercise for each sport player causes physique change, and it may cause epidemiologic damage of musculoskeletal system. It is recommended to perform balancing exercise prior to main exercise.
        4,000원
        10.
        2011.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study was to examine on the respiratory variables, heart rate and muscle activity between the static recovery and dynamic recovery after progressive resistance exercise to maximal point. Subjects were 15 students enrolled in N University. All were tested two times (static recovery and dynamic recovery) and were requested to perform a walking on a treadmill after progressive resistance exercise to maximal point. Electromyography(EMG) was used to monitor the muscle activity(TA: Tibialis Anterior, MG: Medial Gastrocnemius) during gait. CPEX-1 was used to measure the respiratory variables and heart rate. The dynamic recovery group was shown the significant lower heart rate than that of static recovery group at during gait. Respiratory rate showed statistically a significant difference. Electromyography(RMS, root mean square) showed a non-significant difference. But the dynamic recovery group of muscle activity was found highly in TA and MG. This study indicated that the dynamic recovery method evidenced more faster than the static recovery method. And this type of dynamic rest by walking can be a help of recovery after exercise.
        4,000원
        11.
        2016.12 KCI 등재 서비스 종료(열람 제한)
        암의 3대 표준요법중의 하나인 방사선치료는 전통적으로 악성 종양인 암의 근치적 혹은 고식적 치료외에도 일부 증식성이거나 염증성을 보이는 양성 질환에서도 그동안 꾸준하게 시행되어왔다. 양성질환의 경우 악성 종양과는 달리 약물요법이나 보존요법 또는 수술로 만족할 만한 치료성적을 낼 수 있으나 이런 치료들이 실패하거나 불가능한 경우 저선량의 방사선치료를 추가하거나 병용하여 시행하는 경우 인체에 큰 문제없이 안전하고 용이하게 통증완화나 재발율을 의미있게 낮출 수 있다. 최근 방사선치료기법의 발달로 정상조직을 최대한 보존하면서 원하는 부위로의 집중적 치료가 가능해지면서 특히 노인에게서 유용한 대안이 될 수 있을 것으로 생각된다.
        12.
        2016.05 서비스 종료(열람 제한)
        Background : The purpose of this study was to big strong and root in the disease, many high quality seed of Lithospermum erythrorhizon selection by fostering, expanding the spread on a farm and Hongju subsistence production base and raw materials medicines of sources deployment for process is to contribute to increasing farm income. Methods and Results : Collected variety into the chemical mutation breeding method, Jecheon of Chungbuk, was conducted in 2001. In 2002 and 2003, two~ three individual selection in 2005 as it produces the 24 individual in 2004. From 2006 to 2010, pure line isolation as it cultivated and one foundation group. Promising in 2011, select one system. Replicated yield trial for two years beginning in 2012 a result of the stem length, providing high -quality “No. 1, Jeollanam-do” majority by assigning system name. Naju, Jangheung-gun, local excellence by implementing a local adaptability test recognized in two years. To breed a new variety named as a dwelling “ Daehong” of Lithospermum erythrorhizon the review by fostering december 2014 to be registered. Conclusions : Leaf type is the broad lancet, flowering time is new variety six days than Jecheon native variety fasted. New variety of stem length and stem thickness are check variety (87cm, 8.25mm) of 9cm tall and 0.6mm thick. Seed yields has native variety as much as 81 % compared to the many into 45.6 kg/10a. The shikonin contents of roots was 1.3 times higher compared to check variety (447 ㎍ / g). The dried root yields of the new variety are 221kg/10a a many native variety than 50%.
        15.
        2007.09 KCI 등재 서비스 종료(열람 제한)
        ‘Seohong’ was bred within the potato breeding program of National Institute of Highland Agriculture (NIHA). It was originated from a cross made in 1997 between ‘Jashim’ as a female and 93K65-1 as a male parent. Seohong was evaluated as a seedling number 97S05-1 for tuber characteristics, growth and yielding ability from 2001 to 2002, and than this clone was renamed as Daegwan 1-82. This clone was evaluated in the regional yield trial and the disease resistance in the five locations for three years. Finally, this clone was named as ‘Seohong’ and registered a new recommended potato cultivar in 2006. This cultivar has a round, shallow eye depth, light red-skinned tuber characteristics and low to medium dry matter content. It showed high resistance to common scab (Streptomyces scabies) and potato leaf roll virus (PLRV), however it was susceptible to potato virus Y (PVY) and late blight (Phytophthora infestans). Its mean tuber yields from the regional yield trial and winter cropping trial were 12 and 49 percent higher than that of ‘Superior’, respectively.
        18.
        1999.09 KCI 등재 서비스 종료(열람 제한)
        In rice-barley cropping systems, efficient utilization of barley straw is essential, both to improve the soil fertility and to conserve the environment. In order to identify the effects of barley straw mulch rates in rice cultivation, a rice cultivar, 'Gancheogbyeo', was directly seeded on a no-tillage field synchronized with barley harvesting with five barley straw mulch rates, i.e., 0, 2.5, 5.0, 7.5 and 10.0 ton h a-1 and agronomic characters of rice and soil nitrogen were determined. The increasing of barley straw mulch rates. Dominant weed species, chestnut, occurred in large amounts in no mulching or lower mulch rates than in higher mulch rates. The content of N H4 + -N in soil applied with high barley straw mulch rates was lower during the month after seeding, and then it was higher at heading date, compared with lower mulch rates or no mulch plot. As the barley straw rate increased, maximum tillering stage was delayed, and plant height was reduced. Although the lodging of rice plants was seldom observed in all plots, the breaking strength of the culm was significantly higher in the mulch rate of 10.0 ton h a-1 . With an increase of barley straw mulch rate, the effective tillering rate and spikelet number m-2 decreased while ripened grain ratio increased. The rice grain yield was slightly decreased with an increase of barley straw mulch rate, although significant differences were not found all barley straw mulch rates. These results suggest that there is no significant yield loss although the total barley straw production, approximately 5.0 ton h a-l in the present study, apply in the paddy for the following rice cultivation by no-tillage direct seeding.ect seeding.