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        검색결과 52

        21.
        2010.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Supposing that somatotype evaluation results would have significant differences between the public group with less amounts of exercises and the special group with intensive exercises for three to four times a day, this study aimed at comparing the mutual consistency between the results determined by somatotype evaluation tools such as visually calculated index(VCI), Rohrer's Index(RI) and Body Mass Index(BMI). The public, taekwondo players and judo players groups were com˗ posed of fifty persons, taekwondo players and judo players passed through VCI determination, respectively. Their height and weight were examined and analyzed with somatotype evaluation tools. Comparison of somatotype dispersion of RI and VCI showed that most women were determined by VCI as lean type but were deter˗ mined by RI as normal type. And that women were determined by VCI as fat type but were determined by RI as normal type. Therefore both men and women showed significant differences in VCI and RI. Comparison of somatotype dispersion of VCI and BMI showed that both men and women were overestimated or underestimated by VCI rather than by BMI. Comparison of somatotype dispersion of RI and BMI showed that men were less determined by BMI as lean type compared with women; both men and women less determined by BMI rather than by RI as normal type; and both men and women, in particular, were more determined by BMI as fat type but men were more determined by BMI rather than by RI as fat type. Total somatotype consistency by tools showed that VCI has the greatest possibility of determining the public group, compared with other groups as lean type and that the consistency of the three tools were relatively higher for the taekwondo players and judo players groups, compared with the public.
        4,000원
        22.
        2009.12 KCI 등재후보 구독 인증기관 무료, 개인회원 유료
        Seoul is one of the most dynamic capital cities in the world of which population is about 10.49 million. The air quality of Seoul subway is a great concern to users and the public authorities, especially the pollution of particulate matters. The metallic particulate matters are generated from the friction of wheels and subway rails, which causes dispersion into the platform and even to the trains. This study attempted to characterize the current filters in subway MVAC system and a newly developed filter which was a type of thin electret fiber bundle. Collection efficiency of the filtration system varies from 20% to 90% depending on filter life and dust particle size. The removal of fine dust with diameter smaller than 1㎛, which could not be well achieved by current filtration system, is very important in the subway air cleaning system. The new electret filter was found to have a high potential for the use in subway MVAC with high collection efficiency, especially for fine mode dust.
        4,600원
        23.
        2008.06 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        As a continuation of a previous work by Park et al. (2006), we have developed a two-element radio interferometer that can measure both the phase and amplitude of a visibility function. Two small radio telescopes with diameters of 2.3 m are used as before, but this time an external reference oscillator is shared by the two telescopes so that the local oscillator frequencies are identical. We do not use a hardware correlator; instead we record signals from the two telescopes onto a PC and then perform software correlation. Complex visibilities are obtained toward the sun at λ=21cm for 24 baselines with the use of the earth rotation and positional changes of one element, where the maximum baseline length projected onto UV plane is ~90λ As expected, the visibility amplitude decreases with the baseline length, while the phase is almost constant. The image obtained by the Fourier transformation of the visibility function nicely delineates the sun, which is barely resolved due to the limited baseline length. The experiment demonstrates that this system can be used as a "toy" interferometer at least for the education of (under)graduate students.
        4,000원
        27.
        2020.09 KCI 등재 서비스 종료(열람 제한)
        Purpose: This study examined how interpersonal relationship abilities in the elderly affected anger control abilities, as well as the mediating effects of generativity in the relationships between interpersonal relationships, anger control abilities, and self-integration. Research design, data and methodology: The study consisted of randomly selected 300 elderly people currently residing in welfare centers for the elderly, senior citizens colleges, social welfare facilities and other centers in the Seoul or Gyeonggi area. SPSS 23.0 was utilized for this study. Results: Through this research, the effect of interpersonal relationships on anger control ability and selfintegration was observed. Not only that, the effects of interpersonal relationship abilities on anger control and self-integration and the mediating role of generativity, was also closely examined. Conclusion: Anger control ability was found to have a direct positive effect on interpersonal relationship abilities. Anger control ability had a direct and positively correlated effect on self-integration. Additionally, ability to control anger was found to have a positive effect on generativity, and generativity was found to have a positive effect on interpersonal relationship ability, but it was not statistically significant. Anger control ability had a positive effect on generativity, and generativity had a positive effect on self-integration
        28.
        2018.09 KCI 등재 SCOPUS 서비스 종료(열람 제한)
        본 연구는 고지방 식이로 유발된 내당능 장애 모델의 학습 및 기억력 장애에 대한 스피룰리나 섭취의 개선 효과를 확인하고자 하였다. 당부하 검사(IPGTT)를 통하여 고지방식이를 통한 내당능 장애가 유발되었음을 확인하였고, SP는 HFD 대비 약 20%의 당 내성 개선효과를 나타내는 것으로 나타났다. 고지방 식이로 인지 기능 손상을 유발시킨 동물모델의 Y-maze 및 Morris water maze 시험을 진행한 결과는 SP에서 CND 대비 학습 및 장·단기기억력 장애가 유의한 수준으로 개선됨을 확인하였다. 실험동물의 혈청분석 결과는 스피룰리나 섭취가 일반식이로 전환한 것과 비교하였을 때, HFD 대비 LDLC 감소 및 HTR(HDLC의 비율) 증가를 통한 혈중 콜레스테롤 개선에 효과를 나타냈다. 적출된 뇌와 간 조직을 대상으로 SOD 활성, oxidized GSH 함량 및 MDA 함량을 측정한 결과 스피룰리나 섭취가 뇌조직뿐만 아니라 간 조직에서 항산화 활성을 향상시켜 주는 것도 역시 확인할 수 있었다. 이러한 결과는 고지방 식이를 통한 혈당 상승 및 이로 인한 기억능력 저하에서 스피룰리나 섭취는 CND 수준으로의 개선 효과를 유도할 수 있음을 확인하였다. 또한, 스피룰리나 섭취는 뇌 기능과 직접적으로 연관된 콜린성 시스템 손상에도 CND 대비 AChE 활성에 더 높은 저해효과를 나타냄을 확인하였다. 따라서 본 연구는 스피룰리나가 고지방 식이로 유도된 내당능 장애 모델에서 발생될 수 있는 뇌기능 저하에서 혈중 콜레스테롤 개선 효과, 항산화 효과 및 AChE 저해효과를 통하여, 비만으로 유도될 수 있는 대사성 인지 장애에 대한 개선 소재로의 잠재적인 가능성을 갖는 것으로 판단된다.
        29.
        2015.12 KCI 등재 서비스 종료(열람 제한)
        Safflower (Carthamus tinctorius L.) seeds have long been clinically used in Korea to promote bone formation and prevent osteoporosis. In addition, the safflower buds (SB) were found to have more useful functional ingredients than safflower seed. Thus, we investigated the preventive effects of SB diet in ovariectomized (OVX) rats. The rats were divided into five groups; sham operated group, OVX alone group, OVX plus 17β-estradiol (E2 10 ㎍/㎏, i.p.) and OVX plus SB diet feeding group (0.3% or 1%). Feeding of SB diet (0.3% or 3%) to OVX rats markedly increased trabecular formation in femur compared to OVX rats. Feeding of SB diet (0.3% or 3%) to OVX rats also decreased TRAP activity compared to OVX rats. These results suggest that SB diets have bone sparing effects by the decrease of osteoclast activity. We also observed that OVX rats fed with SB diet (0.3% or 3%) exhibited the decrease of calcium and phosphorus in serum compared to OVX-induced rats. Therefore, SB may be beneficial for the patients of osteoporosis, especially in postmenopausal women.
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