• 한국식품영양과학회지
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• 제33권6호
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• pp.995-999
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• 2004

액상칼슘을 첨가한 한방 칼슘제를 중년여성에게 칼슘제 섭취 수준에 따라 3개의 그룹(대조군, Ca500, Ca750)으로 구분하여 일정 기간 섭취시키고, 이들의 골밀도 및 골형성 지표의 변화에 대해 조사하였다. 6개월 후 대조군의 골밀도가 감소한 반면, Ca750군의 요추 골밀도는 초기값 0.850에서 0.865로 증가하였다. 또한 혈청 칼슘과 혈청 osteocalcin의 증가 및 요중 deoxypyridinoline의 감소는 액상칼슘 첨가 수준이 높을수록 섭취 전후 차이가 뚜렷하였다. 특히 Ca750군에서는 혈청 osteocalcin함량이 초기 5.50 ng/mL에서 칼슘제 섭취 후 7.93 ng/mL로 유의적인 증가를 나타내었다. 전반적인 연구 결과에서 액상칼슘 섭취에 의한 유의적인 골밀도 증가는 확인되지 않았으나, 칼슘제 섭취에 따른 위장장애나 변비등의 부작용이 없고 골형성 표지성분의 증가 및 골흡수 표지성분의 감소를 나타내어, 장기적인 연구가 요망된다.

• 대한화학회지
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• 제54권3호
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• pp.295-299
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• 2010

액화석유가스-공기 불꽃에 대한 2가지 열적 금지제(즉, 돌가루, 탄산칼슘)의 억제효과를 연구하였다. 이를 위해 이들 금지제를 가하기 전과 후 가연성 혼합물의 가연성 한도를 측정하여 조사하였다. 그 결과, 탄산칼슘이 돌가루에 비해 억제 효과가 우수하였다.

• 한국식품영양과학회지
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• 제28권4호
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• pp.890-894
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• 1999

Microencapsulation of anchovy oil as a core material in sodium alginate as a wall material was inves tigated. Microencapsulation was accomplished by injecting an oil/water emulsion, consisting of a mixture of liquefied sodium alginate and emulsifier, under high pressure through an orifice submerged in a calcium lactate solution. Microcapsules suspended in a dispersion fluid were observed under a fluorescence mi croscope to verify the presence of the capsules and to note coalescence or degradation of the capsules. Optimum conditions for microencapsulation of anchovy oil were obtained when 1.0% aqueous solution of sodium alginate contained 3% of a 1:1 ratio of ESPR 25(polyglycerine＋polylinoleate) and TW 20(sorbitan laurate＋ethylene oxide) as an emulsifier in terms of capsule size and size distribution, and emulsion stability. The airless sprayer produced microcapsules with a diameter between 15.9 and 73.9 m with different concentration of a wall material. The optimum mixing ratio of wall material to core material was 90:10(wt/wt). 0.2% calcium lactate was appropriate as a dispersion fluid.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2005년도 춘계 학술기술논문발표대회 논문집
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• pp.211-214
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• 2005

Recently, Deterioration of the concrete sewer concrete structures by biochemical corrosion has been issued and a development of the inhibition system of corrosion that has been demanded. The sulfuric acid may react with the hardened cement paste and originate expansive products which can induce swelling and breakless of concrete. Also, a sulphuric acid reacts with calcium hydroxide to from $CaSO_4\;\cdot\;2H_2O$. This reaction accounts for consumption of the calcium hydroxide present in hardened cement paste. In this study, To present from biochemical corrosion of the sewer repair mortar that was spread with liquefied antibiotic and then its experimental properties were experimentally investigated and to estimate the effect of absorbed condition of restorative mortar, the number of coating times and coating contents with antibiotic on the durability properties of restorative mortar spread with antibiotics. Also, testing items such as carbonation depth, choloride ion penetration depth and chemical resistance was tested to estimate the durability properties in third study. In results, the novellus bacillus inhabiting in sewer concrete structures was restrained by antibiotics developed in this study. And carbonation depth, choloride ion penetration depth and chemical resistance of restorative mortar spread with antibiotics was superior to that of plain mortar.