• 대한지역사회영양학회지
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• 제12권2호
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• pp.133-141
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• 2007

Minerals play important roles in biological processes. Hair mineral analysis has the advantages of conveniences in sampling and observing the profiles of multiple minerals simultaneously. The purpose of this study was to compare hair mineral contents between urban and local middle school students, and to find out the relation with nutrient intakes and clinical symptoms. Ten nutritional minerals and 7 environmental mineral contents were analyzed in the hair samples of 44 and 37 male students who resided in urban and local area, respectively. And their nutrient intake and clinical symptom score were estimated from questionnaire. The average age, height, and weight were 15.1 years, 168.4 cm, 56.8 kg in urban subjects and 15.4 years, 169.1 cm, 61.9 kg in local subjects, respectively. The residence types were apartment (63.6%) and small-sized apartment (22.7%) in urban subjects and apartment (51.4%) and house (37.8%) in local subjects. The primary water sources were purified water (38.3%), running water (18.2%) in urban subjects and purified water (32.4%), underground water (27.0%) in local subjects, respectively. Daily energy and nutrient intakes were not significantly different between two groups. Among the surveyed 17 clinical symptoms, the scores of constipation, cold, anxieties and total score of clinical symptoms in urban subjects were significantly love. than those in local subjects. Hair contents of Na, Mg, Ca, Cu, V Al, As were significantly higher, while U was lower in urban subjects compared to those in rural subjects. Hair contents of Ni and U were significantly correlated with food intake, and Cr, V, Al, Sb, As, U showed a correlation with energy intake. Hair Mg level showed significantly negative correlation with total clinical symptom score. In conclusion, hair mineral profile between urban and local students was significantly different. And some of these minerals were significantly correlated with food and nutrient intakes. Especially hair magnesium was significantly correlated with total clinical symptom score. Therefore, hair mineral levels would be needed for more systematic study elucidating potentiality as a useful clinical tool.

• 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.

• 한국식품영양과학회지
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• 제27권2호
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• pp.220-226
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• 1998

This study was undertaken to analyze proximate comosition, mineral contents and fatty acid composition of pure jemsosojoo(PJ) and jemsosojoo added medicinal herb(JMH). Mositure, ash, crude protein and crude fat of pure jemsosojoo were higher than those of the JMH, but carbohydrate content was higher in the JMH. Among minerals, Ca, Mg, Fe, Zn content of the JMH were higher than those of the PJ, while P and Na were higher in the PJ and those difference were significant between the PJ and the JMH(p<0.05). U/S (unsaturaed fatty acid/saturated fatty acid) ratio was higher in the JMH than those of the PJ, the ratio o fglycolipid was 1.75 in the PJ and that of neutral lipid was 3.07 in the JMH. Octadecenoic acid, hexadecanoic acid, octadecenoic acid and hexadecenoic acid were major fatty acids in the total lipids, neutral lipids glycolipids and phospolipids of the PJ and the JMH. Especially, octadecadienoic acid and octadecatrienoic acid were higher in the JMH than those of the PJ.

• 한국식품위생안전성학회지
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• 제1권2호
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• pp.177-179
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• 1986

우리나라에서 널리 식용되고 있는 7종의 버섯(능이버섯, 양송이버섯, 밤버섯, 표고버섯, 싸리버섯, 느타리버섯과 송이버섯)에 대해서 20종의 무기원소의 함량을 측정하여 다음과 같은 결과를 얻었다. 1) 대부분의 검시 버섯류에서 Fe, Na 및 Zn의 함량이 타무기 원소류보다 높은 함량으로 검출되었다. 2) 유해금속원소인 Cd, Hg, Pb 및 As 등은 흔적 정도로 검출되었다. 3) Sb, Se 및 Sn은 전시료에서 검출되지 않았다.

• 한국식품영양과학회지
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• 제19권2호
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• pp.115-120
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• 1990

This study was conducted to investigate the relation of softening with the mineral compone-nts during ripening of tomato fruits. The mineral contents of Ca, K, Mg, Zn. Fe Mn and Cu and its existence form respiratory rate and hardness during ripening were evaluated. The respiratory rate of tomato fruits was decreased until 42 days after anthesis and then increased the climacteric maximum was found on 49 days after anthesis then decreased. The hardness of tomato fruits during ripening did not change greatly until 45days after anthesis then decrea-sed markedly. The major mineral components of tomato fruits were K, Ca, and Mg, Zn Fe Mn and Cu were the minor components. The contents of soluble Ca, Ma and K increased markedly and those of bound Ca and Mg decreased markedly after 45days during ripening,. However other components were not changed greatly.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2004년도 학술대회지
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• pp.51-54
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• 2004

This paper investigated the results of mixture proportion and compressive strength of concrete incorporating mineral admixtures. W/B and contents of mineral admixtures were selected as test parameters. According to test results, use of mineral admixtures resulted in a reduction of fluidity and air contents caused by increased fine particles and absorption effect of FA on reduction of AE agent. Thus, increase of SP and AE agent was needed to maintain the same fluidity and air content as plain concrete. At early stage, use of CKD was beneficial to the compressive strength while at 28days. incorporation of FA and BS had favorable effect on the compressive strength.

• 생명과학회지
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• 제10권6호
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• pp.543-547
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• 2000

Quartz porphyry (QP) on the contents of mineral tissues of male common finch by feeding the basal diet (Control group) containing 3.0% QP (QP group) for 14 days was studied. The relative weight (mg/10 g body weight) of kidney and gizzard in the QP group were higher and lower than in the control group, respectively. However, the relative weight of liver and heart were not significantly different in the both groups. The mineral contents of liver, kidney, heart and gizzard were significantly higher in common finch fed with the diet containing quartz porphyry than that of control diet. The major minerals of these tissues were P, Ca and Fe.

• 한국건축시공학회지
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• 제8권3호
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• pp.111-117
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• 2008

This study provides the setting time prediction method of super retarding concrete incorporating mineral admixtures at the same time including fly ash(FA), blast furnace slag(BS) based on maturity method. The setting time was retarded, as super retarding agent contents increase and curing temperature decreases. In addition, apparent activation energy by Arrhenius function was ranged from $24{\sim}35KJ/mol$ with slightly difference along with mixture proportion. This value is smaller than existing value $30{\sim}50KJ/mol$. It is Indicated that equivalent age using setting time can be a proper method to predict setting time and it also exhibited comparable relativity between prediction value and measurement value. Therefore, this study provided setting time prediction value with super retarding agent contents and mineral admixture combination. Setting time prediction equation provided herein is possibly valid for estimating precise setting time of the super retarding concrete at the job site.

• 한국광물학회지
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• 제23권1호
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• pp.15-23
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• 2010

정량X선회절분석법을 이용하여 131개의 제주도 주변해역 표층퇴적물 시료 내에 존재하는 각 점토광물의 절대함량과 점토광물 사이의 상대함량을 구한 후 그 분포 양상을 비교하여 보았다. 절대 함량은 각각 일라이트(0.5~40.5%, 평균 15.3%), 녹니석(0~7.9%, 평균 2.6%), 카올리나이트(0~5.6%, 평균 1%) 이며 공통적으로 한국남해, 제주도의 북서쪽 해역, 제주도 남쪽 먼 해역에서 높다. 점토광물 함량의 합을 100으로 가정하고 구한 상대함량은 각각 일라이트 70.9% (16.7~89%), 녹니석 21.5% (8.4~68.5%), 차올리나이트 7.6% (0~29.3%)이다. 상대함량을 이용하여 분포 양상을 나타낸 결과, 일라이트는 연구해역 북서쪽과 남동쪽, 그리고 제주도의 남서쪽 해역에서 다른 점토광물에 비해 상대적으로 높은 비율로 분포한다. 녹니석은 연구해역 동쪽과 제주도 서쪽에 인접한 해역에서 상대적으로 높은 비율로 분포하며, 카올리나이트는 제주도 서쪽과 남쪽에 인접한 해역과 남쪽 먼 해역에서 상대적으로 높은 비율로 분포한다. 점토광물 절대함량 분포경향은 연구해역 내 점토에서 실트 입자의 세립질퇴적물 분포와 일치한다. 반면, 점토광물 상대함량 분포는 세립질퇴적물 분포와 관련성을 보이지 않는다.

• Journal of Crop Science and Biotechnology
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• 제10권1호
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• pp.45-49
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• 2007

Silicon is one of the key elements for healthy growth and development in rice crops. We analyzed the effect of silicon(Si) on some growth parameters, plant mineral contents, and bioactive gibberellins in three rice cultivars. Silicon was applied at the rates of 0 kg/0.1ha(control), 40 kg/0.1ha, and 80 kg/0.1ha throughout the course of experiment. Plant growth parameters were enhanced by the application of elevated Si, though plant height and culm length were more favorably affected than the respective dry weights. The plant mineral contents analyzed also increased in treatments where Si was applied without potassium, demonstrating that Si application promotes the absorption of these minerals in rice crops. The endogenous gibberellins measured in our study showed that $GA_1$ is the only bioactive GA form present in rice seedlings. The endogenous $GA_1$ and its precursor $GA_{20}$ contents increased after Si application. However, this increase in endogenous $GA_1$ and $GA_{20}$ contents, and plant growth parameters were different according to the rice cultivars. Our results indicate that Si is a beneficial element in rice nutrition and that different cultivars of Oryza sativa show differential responses to Si nutrition in terms of their growth and development.