• 한국수산과학회지
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• 제52권4호
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• pp.328-333
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• 2019

The proximate composition and mineral contents of 18 subtropical fish species caught off the coast of Jeju Island, Korea were determined. The mean moisture content was highest (78.0%) in the eight species of lean fish, lowest (72.6%) in the four species of medium-fat fish, and intermediate (75.4%) in the six species of low-fat fish. The lipid content was in the order of medium-fat fish > low-fat fish > lean fish. The protein content ranged from 17.7% to 18.9%. The mean macro-mineral contents in the 18 species were 290.2 mg/100 g edible portion K, 146.6 mg P, 113.5 mg Na, 67.2 mg Ca and 38.3 mg Mg. The mean value of micro-mineral contents were 2.1 mg Fe, 1.7 mg Cu and 1.5 mg Zn. These results suggest that subtropical fish from Jeju Island are good sources of protein, lipid and minerals.

• 대한가정학회지
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• 제23권1호
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• pp.25-31
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• 1985

This study designed not only to elucidate free amino acid, fatty acid composition and mineral content in dried alaska pollack but also to examine calcium, magnesium, poassium and sodium contents in its cooking broth according to each boiling time such as 2.5, 5, 10, 20, and 30 minutes. RESULTS : 1. Glutamic acid in dried alaska pollack was the most abundant free amino acid and was followed in order of aspartic acid, lysin, leucine and histidine. They composed of 50.95% of the total amino acid contents. 2. In dried alaska pollack the most abundant fatty acid was palmitic acid. Essential fatty acid content was 26.57% of the total fatty acid. 3. The calcium, magnesium, potassium and sodium contents in dried alaska pollack showed 10.721 mg%, 9.235mg%, 4072.5mg% and 2299.8% respectively. The amount of magnesium and potassium in cooking broth arrived at the highest level when 20 minute boiling was undertaken and the quantities of magnesium and sodium were the highest when 30 minute boiling was made.

• International Journal of Industrial Entomology and Biomaterials
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• 제43권2호
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• pp.52-58
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• 2021

The article presents the results of the content of the chemical and biochemical composition of the pupa of the wild silkworm Saturnia pyri belonging to the family Saturniidae, species of Lepidoptera. The nutritional value of silkworm Saturnia pyri pupae was evaluated, which contained 51% dry matter, 52.50% crude protein, 27.89% fat, 10.50% chitin fibers, 2.5% ash and 27 macro- and microelements and 25 mg alpha tocopherols in 100 g oil. The X-ray fluorescence method was used to determine the content of mineral elements in the pupa of the silkworm Saturnia pyri. It was revealed that the pupa of this type of silkworm contains 25 elements, of which the relative amount of K, Mg, Na, Ca, Al is much higher than other elements.

• Asian-Australasian Journal of Animal Sciences
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• 제15권4호
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• pp.537-542
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• 2002

A study was conducted to evaluate the nutritive potential value of different aquatic plants: duckweed (Lemna trisulaca), duckweed (Lemna perpusila), azolla (Azolla pinnata) and water-hyacinth (Eichhornia crassipes) from Bangladesh. A wide variability in protein, mineral composition, gas production, microbial protein synthesis, rumen degradable nitrogen and in situ dry matter and crude protein degradability were recorded among species. Crude protein content ranged from 139 to 330 g/kg dry matter (DM). All species were relatively high in Ca, P, Na, content and very rich in K, Fe, Mg, Mn, Cu and Zn concentration. The rate of gas production was highest in azolla and lowest in water-hyacinth. A similar trend was observed with in situ DM degradability. Crude protein degradability was highest in duckweed. Microbial protein formation at 24 h incubation ranged from 38.6-47.2 mg and in vitro rumen degradable nitrogen between 31.5 and 48.4%. Based on the present findings it is concluded that aquatic species have potential as supplementary diet to livestock.

• 한국암반공학회:학술대회논문집
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• 한국암반공학회 2000년도 암반공학문제의 수치해석(Numerical Analysis in Rock Engineering Problems)
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• pp.55-61
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• 2000

암반이나 암석의 역학적 거동을 파악하기 위하여 각종시험 및 수치해석을 수행할 때 대표요소체적(REV)의 크기를 객관적으로 결정할 필요가 있다. 본 연구에서는 영주화강암을 대상으로 암석의 역학적 거동에 영향을 미티는 여러 가지 요소 중 조암광물의 함유율에 주목하여 해석모델의 크기변화에 따른 조암광물의 비율과 탄성제수의 변화를 검토하여 REV를 산정하였다. 조암광물의 분포는 해석모델의 면적이 약 702$ extrm{mm}^2$(900 요소)을 초과하면서부터 일정해 지고 있으며, 탄성계수는 해석모델의 면적이 약 900$ extrm{mm}^2$(1156요소)을 초과하면서부터 일정치를 보여준다.

• 터널과지하공간
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• 제10권3호
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• pp.309-315
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• 2000

암반이나 암석의 역학적 거동을 파악하기 위하여 각종시험 및 수치해석을 수행할 때 대표요소체적 (REV)의 크기를 객관적으로 결정할 필요가 있다. 본 연구에서는 영주화강암을 대상으로 암석의 역학적 거동에 영향을 미치는 여러 가지 요소 중 조암광물의 함유율에 주목하여 해석모델의 크기변화에 따른 조암광물의 비율과 탄성계수의 변화를 검토하여 REV를 산정 하였다. 조암광물의 분포는 해석모델의 면적이 약 702$\textrm{mm}^2$(900 요소)을 초과하면서부터 일정해 지고 있으며, 탄성계수는 해석모델의 면적이 약 900$\textrm{mm}^2$(1156 요소)을 초과하면서부터 일정치를 보여준다.

• 한국식품영양과학회지
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• 제13권4호
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• pp.372-376
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• 1984

일반계 4품종, 다수계 7품종 및 찹쌀 1품종의 백미를 대상으로 칼로리, 무기질 및 아미노산 함량을 분석하였다. 칼로리나 무기질 함량은 일반계와 다수계 품종간에 큰 차이점이 없었으며, 찹쌀은 멥쌀에 비하여 인과 칼륨의 함량이 높았다. 아미노산 함량은 글루탐산을 제외하고는 품종간에 유의적인 차이가 없었다. 메티오닌은 품종간에 큰 차이를 보였다. 시료 쌀의 제1제한 아미노산은 모두 라이신이었으며 제 2제한아미노산은 트레오닌이었다.

• 한국세라믹학회지
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• 제34권10호
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• pp.1027-1036
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• 1997

The reology and several physical properties of cements are studied by varying the different mineral composition and particle size distribution(PSD) of cements with closed circuit ball mill for high workability, low heat of hydration, and high strength. In this study, we found that the workability of concretes is related to the viscosity of cement, and affects to strength. Here, this workability is affected by mineral composition (C3A) and the PSD. Especially, rosin-rammer index and 44${\mu}{\textrm}{m}$ residue in the PSD of cements are affected to water demand, casting property, slump loss, strength of cements. From the above results, the conditions of cement for high workability, low heat of hydration and high strength are to use low C3A clinker, 5-10% slag addition, and to grind cement below 0.7 rosin-rammer index, above 3.5-4.5% 44 ${\mu}{\textrm}{m}$ residue, 4000$\pm$100 $\textrm{cm}^2$/g blaine. Such cements are, therefore, supurior to super low heat cement and slag-blended cement in comparing the physical properties of strength, slump, slump-flow, adiabetic temperature, etc.

• 한국대기환경학회:학술대회논문집
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• 한국대기환경학회 2010년도 춘계학술대회 논문집
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• pp.559-560
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• 2010

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 1998년도 가을 학술발표회 논문집
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• pp.57-64
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• 1998