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Effect on the Pain Characteristics of Tension-Type Headache by the Tongue Ridge (설 함요가 긴장성 두통 환자의 통증 양상에 미치는 영향)

  • Bae, Sung-Jae;Lee, Ko-Woon;Kang, Soo-Kyung;Auh, Q-Schick;Hong, Jung-Pyo;Chun, Yang-Hyun
    • Journal of Oral Medicine and Pain
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    • v.36 no.2
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    • pp.123-130
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    • 2011
  • This study was designed to evaluate the pain characteristics of tension-type headache by the tongue ridge. Patients with tension-type headache visited the Department of Oral Medicine, K University Dental Hospital were recruited to this study. Experimental group(n=65) was composed of tension-type headache with the tongue ridge and control group(n=65) was composed of tension-type headache without the tongue ridge. Evaluation list was pain quality, pain intensity, pain laterality, pain increase by routine physical activity and then it was analyzed statistically. The results were as follows: 1. Pain quality of tension-type headache patient was significantly different by the tongue ridge(p=0.049). 2. Pain intensity of tension-type headache patient was significantly different by the tongue ridge(p=0.010). 3. Pain laterality of tension-type headache patient was not significantly different by the tongue ridge. 4. Pain increase by routine physical activity of tension-type headache patient was not significantly different by the tongue ridge. Therefore, it was considered that the tension-type headache patient was influenced by the tongue ridge in the pain quality and pain intensity.

AN EXPERIMENTAL STUDY ON THE MANDIBULAR GROWTH BY THE PARTIAL GLOSSECTOMY OF THE RATS (백서 부분적 설절제가 하악골 성장에 미치는 영향에 관한 실험적 연구)

  • Hyun, Sug-Hwan;Kim, Kwang-Won
    • The korean journal of orthodontics
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    • v.25 no.5 s.52
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    • pp.567-575
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    • 1995
  • The purpose of this study was to investigate the effect of the partial glossectomy on the mandibular growth of growing rats. Thirty one Sprague-Dawley rats four weeks old were divided into two groupes : the first group served as the control and the second group was partially excised in the tongue of the rats. The experimental animals were sacrificed at 4 and 8 weeks after partial glossectomy. The changes of the rat mandibular growth following partial glossectomy were observed biometrically from dry bone specimens. The findings were as follows : 1. Partial glossectomy of growing rat produced inhibitory effects on the growth of the mandible and did not change the original shape of the mandible. 2. Among the factors affecting mandibular growth, the presence of the proper tongue size was essential. 3. Partial glossectomy of the growing rats could not change general growth of the rats whole bodies.

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Evaluation of Corrosion Thickness Loss of Temporary Steel Members Exposed to A Subway Construction Site (지하철 공사현장 환경하의 가시설 강재의 부식두께감소량 추정)

  • Kim, In Tae;Jeon, Sang Hyuck;Hur, Jung Ok;Cheung, Jin Hwan
    • Journal of Korean Society of Steel Construction
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    • v.21 no.3
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    • pp.301-310
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    • 2009
  • Steel has been widely used as a material in temporary structures. Corrosion attack often reduces the long-term durability of temporary steel members that are not protected from corrosion. In designing temporary steel structures, it is difficult to evaluate their long-term durability, since the thickness loss of steel members is not clear. In this study, laboratory and field exposure corrosion tests were performed on structural steel plate specimens, and the loss of thickness of specimens that were exposed to a subway construction site for 11 months and of specimens that were exposed to environments with controlled humidity and calcium chloride for six months were measured. Finally, a thickness loss equation was formulated based on the environmental conditions and the testing periods.

역사속 과학인물 - 지구설 옹호하다 26세로 요절한 과학자 조선조 남극관(1689~1714년)

  • Park, Seong-Ra
    • The Science & Technology
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    • v.35 no.8 s.399
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    • pp.40-42
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    • 2002
  • 조선조에 지구설을 옹호하다 26세로 요절한 청년 과학자 남극관은 '동창이 밝았느냐...'라는 유명한 시조를 남긴 남구만의 손자이다. 그는 자신이 쓴 글모임 "몽예집"에서 지구를 공중에 매단 달걀에 비유하면서 당시 지구설을 반대하던 많은 학자들을 비판한 청년과학자였다.

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역사속 과학인물-우리나라 최초의 근대수학자 이상설(1870~1917)

  • Park, Seong-Rae
    • The Science & Technology
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    • v.31 no.6 s.349
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    • pp.92-94
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    • 1998
  • 1907년 헤이그 밀사사건의 세 주인공 중의 하나인 이상설을 우리나라 최초의 근대 수학자라고 곱을 수 있다. 이상설은 1900년 일본 학자 이노우에 기요시의 수학책을 중심으로 「산술신서」라는 수학책을 편찬했다.「산술신서」는 「정선산학」과 함께 우리나라 근대 이후에 나온 가장 오래된 수학책이다.

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방사선감시기 경보설정치 산정에의 ICRP-60 권고안 적용

  • 배영직;이승종;이경희
    • Proceedings of the Korean Nuclear Society Conference
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    • 1998.05b
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    • pp.683-690
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    • 1998
  • 국내의 원자력 관계법령은 1965년에 발표된 ICRP-9 권고안에 기초하고 있다. 그러나, 최근 국내 규제기관에서는 ICRP-60 권고안을 수용하는 새로운 방사선량 체계 및 한도등을 포괄한 원자력관계법령 개정 최종(안)을 마련하였고 이를 곧 시행할 예정임에 따라 현행 법령이 적용된 원자력시설의 설계 및 운영에 있어서는 적지않은 변경이 불가피하다. 본 논문에서는 이로인한 영향중의 하나로 ICRP-60 권고안을 적용하여 설계중인 신규원전의 기체유출물 방사선감시기에 대한 경보설정치를 산정하였으며, 비교를 위해 현행 법령이 적용된 기존원전에 대한 경보설정치 산정방법을 소개하였다. 이와함께 기존원전에 사용된 DRL (Dose Rate Limit, 선량률한도) 방식과 이를 보다 효과적으로 개선한 ECL (Effluent Concentration Limit, 방출농도한도) 방식을 소개하였으며, 각각의 방식에 의해 산정된 경보설정치를 상호 비교하여 ECL 방식의 효율성과 정확성을 입증코자 하였다. 마지막로는 국내 원전에 설치, 가동중인 기체유출물 방사선감시기에 대해 개정될 국내 법령의 적용과 보다 정확한 경보설정치 산정을 위한 작업이 수행되어야 할 것이며. 이러한 결과가 계통에 반영되어 운전되어야할 것임을 제안하였다.

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Re-examination of Response Compatability Hypothesis in Decision-Making (결정에서 반응 조화설의 재검증)

  • Ahn, Sang-Ji;Lee, Young-Ai
    • Korean Journal of Cognitive Science
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    • v.20 no.2
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    • pp.197-223
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    • 2009
  • Three studies re-examined Shafer's(1993) response compatibility hypothesis in decision making. This hypothesis proposes that participants choose or reject an option when its features are compatible with either a selection or a rejection response. By changing the description of options into sentences and by the prior presentation of either a selection or a rejection question, we obtained results fairly consistent with the predictions of the response compatibility hypothesis. Based on the analysis of both previous and present results, we discussed the importance of preference elicitation methods when constructing options. Our results were compared to those of recent studies.

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