• Title/Summary/Keyword: 고량

Search Result 39, Processing Time 0.029 seconds

지진을 고려한 구조물의 면진/제진 기술개발 현황

  • 김두훈
    • Journal of KSNVE
    • /
    • v.5 no.1
    • /
    • pp.11-20
    • /
    • 1995
  • 본 글에서는 건물 및 교량의 면진/제진 기술의 연구개발과 실용화 현황에 대하여 전반적으로 살펴보았다. 현재 면진/제진 기술의 연구는 매우 활발하게 진행 되고 있으며 여기서 그 전체를 서술하기는 어렵다. 고량의 면진/제진 기술은 새로운 내진기술로서 금후 고량의 다경간 연속화, 장경간화, 고교가화, 엄격한 용지조건 에서의 고량건설에 중요해질 것으로 생각된다. 현재 제진구조 시스템은 안전한 거주 셩의 관점으로부터 중소지진 및 강풍 등에 대한 외란대책으로서 실용화 기술이 진행 되고 있다. 실무적인 관점으로부터 주로 구동장치의 개발이 중심이 되고 있으며 이것에 의하여 제진구조 시스템의 성능이 결정된다고 해도 과언이 아니다.

  • PDF

Studies on Bioresponses of Galangae Rhizoma (I) (고량강(高良薑)(Galangae Rhizoma)의 생체 반응에 대한 연구 (I))

  • KANG, TAK-LIM;HWANG, GWI-SEO
    • Journal of Haehwa Medicine
    • /
    • v.1 no.1
    • /
    • pp.319-328
    • /
    • 1992
  • 산한지통(散寒止痛)의 효능(效能)이 있는 고량강(高良薑)이 체내 면역활성에 미치는 영향을 검토하기 위하여 인삼과 함께 실험을 행하여 아래와 같은 결과를 얻었다. 고량강(高良薑) 및 인삼 수침액을 Sarcoma-180 고형 종양 세포를 이식한 생쥐에 투여하여 생존기간을 연장시켰다. 이를 바탕으로 면역에 대한 효과를 검토한 결과, 정상 ICR 생쥐에서 고량강(高良薑) 수침액은 백혈구수, 체중에 대한 상대적 비장의 무게를 약간 감소시켰으나 통계적으로는 유의성이 없었고, 간에는 영향을 주지 않았다. in vitro 실험에서, splenic IgM PFCs을 유의성있게 증가시켰으며, BSA를 주사한 생쥐에서의 Arthus반응도 증가시켰다. 그러나, 지연형 과민반응에는 영향을 주지 않았으며, 비특이성 면역에 관여하는 Macrophage 등의 탐식 세포의 기능에도 영향을 주지 않았다. 이상의 결과, 고양강은 체액성 면역을 강화할 것으로 보여진다.

  • PDF

Effect of Sorghum nervosum extract on an anti-inflammatory and cytoprotective (고량(Sorghum nervosum)추출물의 항염증 및 세포 보호 효과)

  • Lee, Ju-Hyun;Kim, Kum-Lan;Moon, Ji-sun
    • Journal of the Korean Applied Science and Technology
    • /
    • v.34 no.3
    • /
    • pp.515-524
    • /
    • 2017
  • This study was intended to test anti-inflammation and cytoprotective effect against UVB after Sorghum nervosum was extracted with 70% ethanol. The efficacy of Sorghum nervosum was assessed regarding cell viability analysis, reactive oxygen species measurement, anti-inflammation, a change in COX-2 protein, and cytoprotective effect against UVB. According to the results of experiment, the cell viability of 97% or higher was shown at all concentrations of Sorghum nervosum in RAW264.7 macrophage, HaCaT cell. And in anti-inflammatory NO inhibitory activity, a concentration-dependent inhibitory effect was shown. And COX-2 protein expression was also significantly (p<.001) inhibited at 25, $50{\mu}g/mL$. With regard to cytoprotective effect against UVB, in the quantitative analysis results of reactive oxygen species within the cell, it was verified that Sorghum nervosum extract had an effect on an decrease in the total amount of ROS. When the results of study are considered comprehensively, it is thought that there is possibility of Sorghum nervosum development as raw materials for cosmetics showing an anti-inflammation and cytoprotective function against UVB.

고량에 대한 미국의 내진설계법

  • 방명석
    • Computational Structural Engineering
    • /
    • v.4 no.2
    • /
    • pp.24-31
    • /
    • 1991
  • 국내의 경우 1988년에 건축물에 대한 내진설계기준이 제정되어 대형건축물에 대한 내진설계가 의무화되고 있으나, 도로교에 대해서는 아직 체계적인 연구나 설계방법이 도입되지 않고 있는 실정이다. 그러나 최근 국내에 건설된 올림픽대교, 팔당대교, 강동대교와 과거에 건설된 남해대교, 돌산교 등에서 미국이나 일본의 설계기준을 참조하여 내진해석을 실시한 바 있고, 앞으로 건설될 대형고량에 내진설계가 보편화될 것이 예상되는 바, 지진의 다발지역인 미국 캘리포니아주의 내진설계법과 지진의 피해가 다소 경미한 지역을 대상으로 한 미국의 도로교시방서(AAS HTO제정)의 내진설계법을 소개하고자 한다.

  • PDF

Inhibitory Effect of Galangin from Alpinia officinarum on Lipopolysaccharide-induced Nitric Oxide Synthesis in RAW 264.7 macrophages (고량강으로부터 분리된 galangin의 RAW 264.7 세포주에서 LPS로 유도된 nitric oxide 생성 저해활성)

  • Lee, Hwa Jin
    • Korean Journal of Food Science and Technology
    • /
    • v.46 no.4
    • /
    • pp.511-515
    • /
    • 2014
  • In a screen for plant-derived inhibitors of nitric oxide (NO) production in lipopolysaccharide (LPS)-activated RAW 264.7 macrophage cells, a flavonol isolated from the chloroform extract of Alpinia officinarum was isolated. The structure of the flavonol was found to be 3,5,7-trihydroxy-2-phenylchromen-4-one (galangin, GLG) by using spectroscopy. GLG exhibited an inhibitory effect ($IC_{50}$ value: $26.8{\mu}M$) on NO production in LPS-stimulated RAW 264.7 murine macrophage cells. Moreover, GLG suppressed expressions of inducible nitric oxide synthase (iNOS) protein and mRNA in a dose-dependent manner.

Study of Research and Development for Seasoning Oil as Red Pepper Seed Oil Substituted: Manufacturing of oil soluble natural black pigment from Gardenia and Kaoliang (고추씨 기름 대체 향미유 개발에 관한 연구: 치자, 고량을 이용한 유용성 천연 검정색소의 제조)

  • 구본순;김덕숙
    • Food Science and Preservation
    • /
    • v.11 no.1
    • /
    • pp.42-46
    • /
    • 2004
  • Each pigments were obtained by ethyl alcohol extraction method, blue and yellow pigment from Gardenia as well as dark brown pigment from Kaoliang. Concentration of these pigments are all 60 Brix, the extraction yields were 0.68, 1.97, 0.63 %(w/w), respectively. Oil soluble natural black pigment (OSNBP) was composed of soybean oil, water, emulsifier, Gardenia blue and yellow, Kaoliang dark brown etc. Blending ratio of these was 8: 22: 42: 10: 15: 13 (w/w), this mixture was carried out homogenized. Solubility of this OSNBP in soybean oil was appeared the maximum level at about 30∼40$^{\circ}C$ range. OSNBP solubilized black oil was not reseparated at below 20$^{\circ}C$.

Assessment of Radiation Dose Due to X-Ray Simple Series Examinations (X-선 단순 Series 촬영 시 피폭 선량 평가)

  • Gang, Eunbo;Hwang, Incheol;Shin, Woonjae
    • Journal of the Korean Society of Radiology
    • /
    • v.8 no.2
    • /
    • pp.81-88
    • /
    • 2014
  • In diagnostic radiology, each part is examined through serial radiography in most cases of general radiography. However, the reality is that, as for diagnostic reference level, measured values have been set up only for AP projection of each part and lateral projection. In the clinical setting, cumulative dose is incurred by serial radiography of patients, and this can make comparison of diagnostic reference level and cumulative exposure dose impossible or can lead to underestimation of diagnostic reference level. In this study, measurement of cumulative dose of serial radiography of each part revealed that when converting entrance surface dose to effective dose in case it is included in the exposure field, cumulative dose measured from a maximum of 38.06% to a minimum of 0.23% of individual dose limitation of the public. Also, when converting entrance surface dose of each part that is not included in the exposure field into effective dose, it measured from a maximum of 5% to a minimum of 0.04% of individual dose limitation of the public. Results of this study show entrance surface dose substantially increases in serial radiography of each part. Therefore, it is deemed that hospitals need to establish diagnostic reference level specifically, and subdivision of radiography orders for patients is also required in order to reduce unnecessary inspections. Moreover, the need of accurate exposure field is emphasized in case of inspection of several parts.