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        검색결과 48

        1.
        2023.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Buckwheat (Fagopyrum esculentum), which is a traditional Korean crop, has been known as a health food due to its rich nutrition. This study was conducted to evaluate the change in flavonoid content of flowers and seeds during post-flowering growth of Korean tartary buckwheat variety ‘Hwanggeummiso’, with the aim of providing basic data for the development of functional food and feed additive. Tartary buckwheat took 69 and 99 days from the sowing date to reach the flowering and maturity stages, respectively. As a result of examining the flavonoid components of each part of tartary buckwheat, chlorogenic acid, rutin, and isoquercitrin of flowers increased from the flowering period on 22 May (0 days after flowering) to 42 days after flowering, while quercetin increased until 21 days after flowering and then decreased thereafter. In seeds, chlorogenic acid, rutin, and isoquercitrin were most abundant at the time of seed-bearing on 14 days after flowering, and showed a decreasing tendency thereafter. On the other hand, quercetin showed a tendency to increase until 21 days after flowering and then decrease. Overall, the flavonoid content was higher in flowers than in seeds, with rutin being particularly prominent. Based on this, the possibility as food materials and feed additives was confirmed using buckwheat produced in Korea.
        4,000원
        2.
        2019.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Salicylic acid (SA) is an essential plant growth regulator that functions as a signaling molecule in plants. The purpose of this study was to clarify how the exogenous application of SA counteracts aluminum stress-induced growth and biomass yield reduction in alfalfa exposed to aluminum (Al) stress. Two-week-old alfalfa seedlings were exposed to a combination of AlCl3 (0 μM, 50 μM and 100 μM, respectively) and SA (0.1 mM) for 72 hours. We observed, Al stress-induced plant growth inhibition and forage yield reduction are Al stress-dependent manner. A significant reduction of plant height (42.0-52.9%), leaf relative water content (13.0-21.4%), root length (35.4-48.7%), shoot fresh weight (31.2-25.9%), root fresh weight (15.4-23.3%), shoot dry weight (12.7-22.2%), roots dry weight (47.3 -53.5%), were observed in alfalfa. In contrast, SA alleviated the Al-stress and enhanced growth and biomass yield in alfalfa. This study provides useful information concerning the role of SA that counteracts aluminum stress-induced growth and yield reduction in alfalfa.
        4,000원
        3.
        2019.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Soil acidity or alkalinity are serious limitations for crop production. The purpose of this study was to clarify the negative effects of extreme pH stress (low and high) on alfalfa vegetative growth (VG) and biomass accumulation (BA). Two-week-old alfalfa seedlings were exposed to different pH (4.0, 4.5, 7.0, 8.0 and 8.5, respectively) levels for 72 hours. Alfalfa grown at pH 4.0 and 8.5 significantly reduced VG and BA, wherein as neutral pH (7.0) comparably exhibited better growth and biomass yield. These results indicate that extreme acidic or alkaline level are critical limiting factors for growth and biomass yield in alfalfa.
        4,000원
        4.
        2019.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Background: Surgery has been known as an inefficient approach to reduce back pain in patients with lumbar spinal stenosis; therefore, non-surgical treatments are necessary. However, there has been little research to analyze the effect of non-surgical treatments on lumbar spinal stenosis pain. Objective: To identify the effectiveness of 2 physiotherapeutic treatment approaches to relieve pain due to lumbar spinal stenosis. Design: Randomized controlled trial Methods: The participants were 36 lumbar spinal stenosis patients who were randomized in the joint mobilization group (JMG) and transcutaneous electrical nerve stimulation group (TENSG). Joint mobilization (JM) was conducted at the posteroanterior joint in the spinous process of the lumbar spine with stenosis. Transcutaneous electrical nerve stimulation (TENS) was applied on the lumbar spine with stenosis at a high frequency and intensity. Results: Visual analog scale (VAS) pain score significantly decreased in both groups, and the VAS value decreased more after JMG than that after TENSG. The pain thresholds of both groups also significantly increased, and that of JMG increased more compared to TENSG. In both the groups, significant improvements in VAS and pain thresholds were found, and JMG showed better results than TENSG. Conclusions: JM and TENS showed significant relief in both pain threshold and painpain, and JM showed more advanced relief compared to TENS.
        3,000원
        5.
        2018.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구에서는 작업기의 디스크 헤로우를 이송장치에 부착하여 실내실험을 통해 토양의 물리적 특성(함수율, 단위중량), 작업기의 특성(주행속도, 디스크 헤로우 간의 간격)에 따른 경운 토양의 반전율 등을 분석하고자 하며, 작업시기의 적정 토양의 물리적 상태를 확인하여 농가의 기초자료로 활용하고자 한다. 실험은 4가지 변수를 두고 진행하였다. 함수율, 작업 속도는 3가지 조건으로, 단위 중량은 일반적인 밭 흙 단위 중량 2.3kg/m3을 기준으로 높을 때와 낮을 때로 구분 지었으며, 디스크 헤로우의 간격은 30cm, 40cm로 구분하여 실험을 진행하였다. 이러한 4가지 변수를 두고 실험을 실시할 때 똑같은 조건으로 산포하기 위해 1m x 1m 면적의 프레임을 제작하여 일정하게 3회 석회가루를 산포하고, 경운작업 전․후의 석회가루 분포를 측정하여 반전율을 계산하였다. 반전율은 함수율별 분석 시 25%, 15%, 30% 순으로 측정되었고, 디스크 헤로우의 간격은 30cm 일 때가 더 높게 측정되었으며, 토양의 단위중량은 2.3kg/m3 이상일 때 더 높게 측정되었다.
        4,000원
        6.
        2018.02 KCI 등재 구독 인증기관 무료, 개인회원 유료
        가축질병 바이러스는 매우 빠르게 전파되는 특징을 가지고 있으며 질병에 걸린 동물의 분비물에 접촉하거 나, 사람이나 차량에 의한 바이러스의 이동, 또는 공기를 통하여 전파가 이루어진다. 본 연구에서는 가축 및 분뇨 운반차량이 질병을 전파시키는 요인이 될 수 있다고 판단하고 전염병 발생 시 질병의 이동 경로를 파악 하고 효율적인 방역범위를 설정하는데 기초자료로 활용 하고자 한다. 축산차량의 이동경로를 분석하기 위해 ArcGIS(Ver. 10.3, ESRI, USA)의 Spatial Statistics tool에서 Measuring geographic distribution방법을 활용하여 Directional distribution을 추출하였다. 결과 값으로 위도(Latitude), 경도(Longitude), Rotation, XstdDist, YstdDist을 얻었다. 그 결과 특정한 목적을 가지고 출발지가 일정 지역에 귀속되어 있는 가축 및 분뇨 차량의 경우 출발지점, 도착지점, 목적지가 크게 바뀌지 않을 경우, 이용하는 도로는 한정되어 있었다. 30대의 차량 중 대다수의 차량이 일정한 패턴을 가지고 평상 시 이용하는 경로만 이용하여 분뇨를 운반하는 것을 확인 할 수 있었다. 본 연구를 통해 전염병 발생 시 질병의 이동 경로를 파악하고 효율적인 방역범위를 설정하여 투입 인원과 장비를 줄이면서 현재보다 효율적인 방역 범위를 설정이 가능할 것으로 판단되었다.
        4,000원
        7.
        2017.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The aim of the study was to investigate the effects of incentive spirometry and Ujjayi breathing technique on the pulmonary function of smokers. Subjects were individuals who had a smoking habit of at least a year. Subjects were randomly divided into 3 groups: the incentive spirometry group (n=8), Ujjayi breathing technique (n=9), and a group applying both incentive spirometry as well as Ujjayi breathing technique (n=8). Each intervention was performed twice a day, 5 times a week, for a total of 8 weeks whereupon the change in pulmonary function was evaluated. A spirometer was used to measure FVC, FEV1, and FEV1/FVC. The survey used for this study included the Fagerström Test of Nicotine Dependence (FTND) and the Shortness of Breath Questionnaire (SOBQ). Study results for the comparison within groups showed that in the group that performed both the incentive spirometry and Ujjayi breathing technique, FEV1 improved with statistical significance (p<.05). Furthermore, within this comparison the FEV1/FVC improved with statistical significance. Comparison amongst the groups showed no statistically significant differences in all areas. Following, to effectively increase pulmonary function in young adult smokers, both incentive spirometry and Ujjayi breathing technique should be employed together.
        4,000원
        8.
        2017.10 구독 인증기관·개인회원 무료
        The purpose of this study is to improve practical skill evaluation method of mushroom - trained certified technician's practical skill evaluation which is one of national qualification tests based on national incompetency standards. One of the current National Competency Standards (NCS), mushroom - trained certified technician uses NCS based practical assessment method. In order to improve the current practical evaluation method, we try to improve practical evaluation method based on field customized problem solving ability and improve the practical evaluation method, various evaluation methods should be constructed. On the purpose of identify the diversity and problems of the evaluation method, the experts of the group consultation, the mushroom-related research institute and the related industry collaborated to identify the problems of the actual mushroom - trained certified technician practicum test, This study on the evaluation improvement method was carried out. In this study, the contents of practical test of the current mushroom traits were analyzed and the trends of the latest mushroom industry were widely reflected.
        9.
        2017.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Drought is one of the detrimental factors that impair plant growth and productivity. In this study, we applied annealing control primer (ACP)-based reverse transcriptase PCR (polymerase chain reaction) technique to identify differentially expressed genes (DEGs) in maize leaves in response to drought stress. Two-week-old maize seedlings were exposed to drought (DT) by suspending water supply. DEGs were screened after 3 days of DT-treated samples using the ACP-based technique. Several DEGs encoding 16.9 protein, antimicrobial protein, hypothetical protein NCLIV_068840, thioredoxin M-type were identified in maize leaves under drought stress. These genes have putative functions in plant defense response, growth and development. These identified genes would be useful for predictive markers of plant defense, and growth responses under drought stress in plants.
        4,000원
        10.
        2017.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Salt stress is one of the most limiting factors that reduce plant growth, development and yield. However, identification of salt-inducible genes is an initial step for understanding the adaptive response of plants to salt stress. In this study, we used an annealing control primer (ACP) based GeneFishing technique to identify differentially expressed genes (DEGs) in Italian ryegrass seedlings under salt stress. Ten-day-old seedlings were exposed to 100 mM NaCl for 6 h. Using 60 ACPs, a total 8 up-regulated genes were identified and sequenced. We identified several promising genes encoding alpha-glactosidase b, light harvesting chlorophyll a/b binding protein, metallothionein-like protein 3B-like, translation factor SUI, translation initiation factor eIF1, glyceraldehyde-3-phosphate dehydrogenase 2 and elongation factor 1-alpha. These genes were mostly involved in plant development, signaling, ROS detoxification and salt acclimation. However, this study provides new molecular information of several genes to understand the salt stress response. These genes would be useful for the enhancement of salt stress tolerance in plants.
        4,000원
        13.
        2017.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The aim of this study was to observe the effects of kinesiotaping and joint mobilization on the metatarsophalangeal joint angle and pain in hallux valgus patients Twenty-one female hallux valgus patients in their 20s were divided into two groups, a Kinesiotaping group (KT, n=10) and another group with the addition of joint mobilization (KTJM, n=11). After undergoing 6 weeks of intervention, the change in the metatarsophalangeal joint and pain were measured. Metatarsophalangeal joint angle was significantly increased both the KT and the KTMJ group after intervention. In the change of pain, both the KT and KTJM groups on an individual basis also experienced a significant decrease in pain, though comparison between the two groups failed to represent a significant difference. These findings suggest that Kinesiotatping and joint mobilization increased the joint angle and reduced pain.
        4,000원
        14.
        2017.04 KCI 등재 구독 인증기관 무료, 개인회원 유료
        In this study, a energy recovery ventilation system was applied to the pig model, intake and exhaust duct were installed at a height of top(2.1 m), middle(1.25 m) and bottom(0.4 m). In each of the 9 test sites, one test was performed from 10:00 to 18:00, optimal temperature exchange efficiency and temperature distribution were analyzed. In order to analyze the effect of the energy recovery ventilation system, the temperature of 31 points(4 points of the ventilation system and 27 points in the pig house model) was measured from 10:00 to 18:00. The test that showed the highest heat exchange efficiency was the configuration of middle intake duct and top exhaust duct, which was 75.44%. The test that showed the most uniform distribution was the configuration of middle intake duct and bottom exhaust duct. These results will be utilized to optimally design feeding environment of actual pig houses and to reduce fuel cost.
        4,000원
        15.
        2017.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study used both kinesiotaping and extracorporeal shock wave therapy on patients diagnosed with frozen shoulder - a common musculoskeletal disorder in adults - in order to observe the effects on the joint range of motion. 21 adult(male 12, female 9) were selected and distributed into randomized groups. One group received kinesiotaping (n=10) and the other group received kinesiotaping together with extracorporeal shockwave therapy (n=11). After a 6 week duration of receiving kinesiotaping and extracorporeal shockwave therapy, changes in the joint range of motion in the patients were observed. Post-treatment of frozen shoulder, the changes in abduction within the shoulder joint were as follows: in both groups there was a noticeable increase in the joint range of motion (p<.05). Post-treatment of frozen shoulder, the changes in external rotation within the shoulder joint were as follows: both groups showed a significant increase in the joint range of motion (p<.05). The result of suggest that, it can be inferred that both the extracorporeal shockwave therapy and kinesiotaping are effective in increasing the joint range of motion in patients with frozen shoulder.
        4,000원
        16.
        2016.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The purpose of this study was to determine the effects of music therapy and ball exercise on women experiencing menstrual discomforts, thereby identifying the validity of these methods as interventions against menstrual discomforts, with a particular goal of presenting basic data for clinical use. Twenty university students in their 20s were assigned to two therapy groups in a sequence via simple random sampling; ten subjects attended a ball exercise combined with music therapy group and the other ten subjects attended a music therapy group. Ball exercises were conducted 3 times per week for a total of 12 times, starting from 3 weeks before the expected first day of the menstrual period and ending on the last day of the menstrual period. Similarly, the subjects participated in music therapy by listening to music for 35 minutes per session and 3 sessions per week, starting from 3 weeks before the expected first day of the menstrual period and ending on the last day of the menstrual period. Five out of six categories of menstrual discomforts were significantly decreased in both music therapy and ball exercise, the exception being changes in the autonomic nervous system, while those in the music therapy group showed a significant difference only in the category of behavioral changes. The results of the present study demonstrate that the ball exercise combined with music therapy more effective in improving menstrual discomforts than the music therapy group.
        4,000원
        17.
        2016.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        우리나라의 시설원예 산업은 농업용 필름이 생산되고 보급되면서 우리나라의 시설원예는 급속도로 발 전하였다. 그 후에 골조는 아연도금 파이프, 피복재는 연질필름을 이용하여 보온재배 위주의 시설이 전 국적으로 설치되었다. 바이오가스에 포함된 황화수소 및 메탄은 온실 자재나 작물에 악영향을 유발하는 요소로 작용될 수 있다. 그리하여 본 연구에서는 유기성폐기물인 바이오가스에서 막 분리법을 이용하여 CO2 가스를 정제, 포집하였다. 그리고 정제된 CO2를 온실에 공급하여 바이오가스에 포함된 성분들이 온실의 자재에 미치는 영향을 분석하였다. 실험은 세가지 실험구를 설정하여 시행하였으며, 실험 1은 일반적으로 온실 시용에 판매되고 있는 온실용 액화 CO2를 시비한 경우(온실-1), 실험 2는 바이오가스 에서 분리한 CO2를 시비한 경우(온실-2), 실험 3은 CO2를 공급하지 않은 일반적인 경우인 대조구로 실 험을 행하였다. 실험 결과, 시중에는 판매되고 있는 CO2를 시비한 온실과 대조 실험구와 비교하였을 때, 피복자재의 투과도, 인장강도는 세 실험구에서 모두 유사하게 측정되었다. SEM, EDS 분석 결과, 세 실험구에서 산화철의 결정이 나타났으며, 파이프 자재 표면의 O와 S의 함유량은 두 번째 온실에서 높게 나타났다.
        4,000원
        18.
        2015.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        가축 사육형태가 규모화 됨에 따라 가축분뇨 발생량은 지속적으로 증가하고 있으며, 가축분뇨를 에 너지로 이용하고자 하는 자원화에 대한 요구가 점차 증가되고 있다. 국내에서 발생하는 가축분뇨 에너 지화의 경제적 효과는 4,777억원으로 기대되고 있다. 따라서, 축산분뇨를 원료로 하는 바이오가스 플 랜트에서 발생하는 가스의 이용에 관한 연구는 활발히 연구되고 있다. 본 연구에서는 가축분뇨를 원료 로 한 바이오가스 플랜트에서 발생하는 가스의 이용에 대한 다양화를 모색하고자, 바이오가스 내 개별 성분의 분리 및 정제 방법을 구명하였다. 그리고 바이오가스 내 대표적인 성분이 CH4, CO2가스의 분 리를 통하여 독립적인 활용 방안을 제시하고자 한다. 이를 위해 발생하는 가스의 분리를 행하였으며, 분리된 가스의 적정 이용을 위한 정밀분석을 하였다. 그 결과, CH4가스는 약 95%, CO2가스는 약 93.2%로 정제되었으며, 분리된 가스 속에는 황화수소의 경우 1ppm이하로 포함되어 있는 것을 확인하 였다. 정제 CO2가스의 정밀 분석 결과, 도시가스 품질 기준표와 비교하였을 때, 정제 CH4에 포함된 성분들이 품질 기준표에 적합한 농도를 나타내었다. 정제 CO2의 정밀 분석 결과, 농업시설 내의 작업 자와 작물에게 유해한 성분들의 함량이 매우 미세하게 나타났다.
        4,000원
        19.
        2015.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The purpose of the present study is to provide exercises, together with music, that are helpful for elderly people’s balancing ability, and to determine their effects in order to provide data for the promotion of elderly persons’health. Thirty elderly persons were randomly assigned to a balance training group(BTG) of 15 subjects, or a music and balance training group (music therapy + balance training [MTBTG]) of 15 subjects; intervention was implemented three times per week for six weeks. To measure the changes in their balancing ability before and after the experiment, the limit of stability, the“Timed Up and Go”(TUG) test, and the Berg Balance Scale (BBS) were measured. Changes in the limit of stability before and after the experiment were shown to be significant in both the BTG and the MTBTG. Changes in the limit of stability of the right side before and after the experiment showed statistically significant differences between the BTG and the MTBTG. Changes in the TUG test and the BBS before and after the experiment were shown to be statistically significant in both the BTG and the MTBTG. The application of music during balance training thus is considered to have a positive effect on elderly persons’balancing ability.
        4,000원
        20.
        2014.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The purpose of this study is to observe the effect of elasticity of taping on ankle muscles’activity and endurance after plyometric training that easily causes ankle injury, and provide baseline data for physical therapy intervention methods. The study subjects are 24 male students in their 20s who attend N University in Choongnam. They were divided into three groups; 8 subjects in the elastic taping group, 8 in the non-elastic taping group, and 8 in the non-taping group(control group). They had plyometric training for 6 weeks. After the training, this study measured their maximum voluntary isometric contraction(MVIC) and muscle endurance of the muscles around ankle joint. The experiment result is as follows. After the training, all three groups showed improvement in muscle strength and endurance. The elastic taping group showed insignificant improvement in muscle strength but significant increase in muscle endurance in plantarflexion. In dorsiflexion, both muscle strength and endurance increased significantly. The non-elastic taping group showed insignificant improvement in muscle strength but significant increase in muscle endurance in plantarflexion. Taping during plyometric training had a little or insignificant effect on muscle endurance and strength compared to the non-taping group.
        4,000원
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