• Korean Journal of Soil Science and Fertilizer
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• v.33 no.4
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• pp.283-291
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• 2000

The beneficial effects of mycorrhizal fungi on plant growth has largely been attributed to higher uptake of P and other mineral nutrients. However, the effects of mycorrhizal colonization on uptake of mineral nutrients are conflicting in various past investigations. This study was carried out to investigate the effect of P application rate on mycorrhizal colonization and nutrient uptake of Poncirus trifoliata (trifoliate orange) seedlings grown in non-cultivated volcanic ash soil of Cheju island. Five levels of P (40, 573, 1,106, 1,373. $1,640mg\;P\;kg^{-1}$) were applied with double superphosphate. Seedlings inoculated with mycorrhizal fungi were grown for 5 month in a greenhouse. As the level of P application increased, mycorrhizal colonization in the seedlings decreased, and the colonization was significantly reduced when available P was higher than $150mg\;P\;kg^{-1}$ levels. There was a significant correlation between mycorrhizal colonization and P uptake by trifoliate orange seedlings at lower P applications. The effectiveness of mycorrhiaze on P uptake was more significant at lower P applications. Uptake of N, K, Ca, Mg an Zn by trifoliate orange seedlings also increased as mycorrhizal colonization increased, but mycorrhizae could not enhance the uptake of Cu by trifoliate orange seedlings in volcanic ash soil of Cheju island.

• Journal of The Korean Society of Grassland and Forage Science
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• v.21 no.1
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• pp.7-14
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• 2001

This pot experiments was conducted to find out the forage productivity and quality in a grass/clover sward as affected by the application of three different fertilizers; double superphosphate(DS), fused Mg-phosphate(FP), and complex fertilizer(CF) on newly reclaimed hilly soil. This 2nd part was concerned with the contents and yields of mineral nutrients and general components. The results obtained are summarized as follows: 1. The concentrations of P, Ca. Mg, and Na by the forage species were relatively higher in the CF plots than in the FP and DS plots. The yields of mineral nutrients by the forage species were high in the order: CF>FP>DS plots. Especially. these were higher in the ladino clover and mixed forages than in orchardgrass. 2 The contents of crude protein and crude ash were highest with the CF plots, compared with the FP and DS plots. The yields of general components in the ladino clover and mixed forages were apparently highest with the CF plots. whereas these in orchardgrass not showed consistent differences among the plots. It was recognized that the positive effects on the concentrations and yields of mineral nutrients and general components in forages were higher in the order: CF＞FP＞DS plots.

• Culinary science and hospitality research
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• v.23 no.1
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• pp.19-27
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• 2017

The present study was aimed at evaluating whether white rice consumption has any association with selected measures of dietary intake and nutrients, including various variables of energy intake, major vitamin, mineral intakes, and the risk of health characteristics for over 60 years older. A total of 1,433 subjects (658 male and 775 females) 60 years or older from the fifth Korea National Health and Nutritional Examination Survey(KNHANES) 2010 participated and the Food Commodity Intake Database were used in this study. Levels of percent energy intake from rice were classified into 4 groups (R1, R2, R3, R4 groups: 25% of each) between male and female elderly using data from KNHANES. One of the interesting findings was that the higher rice consumers had a significantly sufficient intakes of a range of nutrients such as total energy intake, protein, carbohydrate, calcium, mineral, sodium, potassium, and niacin in female elderly, but not much in male. Other finding was that as the higher intake of rice group, prevalence of hypertension (53.5%, 63.4%, 50.3%, 46.3%, p=0.035), dyslipidemia (16.6%, 18.0%, 14.5%, 11.1%, p=0.008), sarcopenia (46.1%, 46.1%, 40.2%, 28.8%, p=0.012), sarcopenic obesity (25.4%, 31.5%, 23.7%, 15.5%, p=0.008) were significantly less than other groups in female, but not much in male. In conclusion, we obtained valuable basic information on recommended rice-centered diet could give us good nutritional status and eventually bring the prevention of some chronic diseases in elderly, especially in female.

• Asian Journal of Atmospheric Environment
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• v.5 no.3
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• pp.157-163
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• 2011

Atmospheric aerosol deposition caused by Asian dust (KOSA) events provide nutrients, trace metals, and organic compounds over the Pacific Ocean that enhance ocean productivity and carbon sequestration and, thus, influence the atmospheric carbon dioxide concentrations and climate. Using dust particles obtained from the snow layers on Mt. Tateyama and the surface sand of Loess Plateau in incubation experiments with natural seawater samples on a shipboard, we demonstrate that dust-particle additions enhanced the bacterial growth on the first day of incubation. Gram-positive bacterial group and alpha-proteobacteria were specifically detected form seawater samples including the mineral particles. Although the remarkable dynamics of trace elements and nutrients depend on dust-particle additions, it is possible that organic compounds present in the mineral particles or transported microbial cells could also contribute to an increase in the quantities of bacteria. The chlorophyll concentrations at fractions of every size indicated a similar pattern of change between the seawater samples with and without the dust-particle additions. In contrast, the chlorophyll measurement using submersible fluorometer revealed that the dynamics of phytoplankton composition were influenced by the dust-particles treatments. We conclude that the phytoplankton that uses the bacterial products would increase their biomass. We show that KOSA deposition can potentially alter the structures of bacterial communities and indirectly influence the patterns of marine primary production in the Pacific Ocean.

• Journal of Korean Academy of Nursing
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• v.44 no.5
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• pp.504-514
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• 2014

Purpose: This study was done to assess the bone mineral density (BMD), biochemical bone turnover markers (BTMs), and factors associated with bone health in young Korean women. Methods: Participants were 1,298 women, ages 18-29, recruited in Korea. Measurements were BMD by calcaneus quantitative ultrasound, BTMs for Calcium, Phosphorus, Osteocalcin, and C-telopeptide cross-links (CTX), body composition by physical measurements, nutrients by food frequency questionnaire and psychosocial factors associated with bone health by self-report. Results: The mean BMD (Z-score) was -0.94. 8.7% women had lower BMD ($Z-score{\leq}-2$) and 14.3% women had higher BMD ($Z-score{\geq}0$) than women of same age. BTMs were not significantly different between high-BMD ($Z-score{\geq}0$) and low-BMD (Z-score<0) women. However, Osteocalcin and CTX were higher in women preferring caffeine intake, sedentary lifestyle and alcoholic drinks. Body composition and Calcium intake were significantly higher in high-BMD. Low-BMD women reported significantly higher susceptibility and barriers to exercise in health beliefs, lower bone health self-efficacy and promoting behaviors. Conclusion: Results of this study indicate that bone health of young Korean women is not good. Development of diverse strategies to intervene in factors such as exercise, nutrients, self-efficacy, health beliefs and behaviors, shown to be important, are needed to improve bone health.

• Ocean and Polar Research
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• v.25 no.4
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• pp.653-662
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• 2003

Changes in the area of geo-ecosystem $(62^{\circ}09'S,\;58^{\circ}31'w)$ reflect climatic changes in the South Shetland Islands. Air temperature and deglaciation will increase. The ice-free space area at the SSSS 8- (ASPA 121) site has enlarged threefold during the last 21 years, thus creating conditions for inhabitation and succession. Wind, water and snow play important roles in transportation of geochemical components. They distribute nutrients, mineral substances, seeds, fragments of plants and animals, etc. Plant and animal colonization is patchy and it happens at random in an 'island' - like manner. The colonization pattern is dependant, to a high degree on physical factors. The newly uncovered ice-free areas are at first inhabited by a vascular plant known as the Deschampsia antarctica. The border of the land-oasis with Admiralty Bay is the place where the processes related to animal feeding at the sea and reproduction on the land take place. Bird colonies and pinniped lairs form centers of fertilization surrounded by high chemical gradients dependent on the direction of the flow of nutrients $(e.g.\;NH_4)$. During the last 25 years, the numbers of penguins in this region have decreased, and thus the amount of materials excreted on land has diminished. The numbers of fur seals change in multi-annual cycles, and their migration into this area is related to the E1 $Ni\~{n}o$ phenomenon. The numbers of elephant seals in the area did not change. Organic matter deposited by the sea onto the shore are a source of nutrients and deficient chemical elements on land. Mineral matter is washed out into the waters of Admiralty Bay. These processes change seasonally, and multi annually. Negative effects on the environment at Arctowski Station induced by man are slight, but noticeable nevertheless. Physical processes have the largest influence on the living conditions and distribution of plants and animals, and as a consequence, on the functioning of the geo-ecosystem in the coastal-shore zone of the Maritime Antarctic.

• Journal of the Korean Dietetic Association
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• v.8 no.3
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• pp.301-310
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• 2002

In order to investigate the use and recognition of nutrition labelings of processed foods which adolescents frequently purchase, 277(boys 125, girls 152) middle school students and their parents were conveniently selected from the west Chonan City, and were surveyed by self-recording questionnaire on June, 2000. Nutrition labels were indicated only in 14.9% of 222 processed snack foods. At purchasing foods the students considered taste most importantly and in turn price, quantity, and nutrition. Of the subjects 79.4% of students and 89.2% of parents had experiences of reading nutrition labels, and the reasons were mainly to just know contained nutrients(76.8%, 72.1%, respectively) and for their health care(35.9%, 47.8%, respectively). The main reason not to confirm nutrition labels was that they were not interested in nutrition labels. But too small size and rudeness or hardness of understanding was also pointed out as a reason of not reading nutrition labels. The students ranked mineral, protein, and carbohydrate as the most important three nutrients at labelings, while the parents ranked protein, mineral, and calorie. Cholesterol, dietary fibers, and sodium were shown the lowest rank in both students and parents. Significant nutrients for specific processed foods did not well recognised in the students. Conclusively, nutrition labelings should be applied to all processed foods which students frequently buy, particularly in clear and large size. Also it is necessary to prepare education programs for both students and parents about accurate recognition of nutrition knowledge about processed foods and how to use nutrition labels.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.12
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• pp.15-20
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• 1972

There are still many problems on the physiological role of silicon in rice plants, although, it has been reported that silicate slag is the most effective fertilizer for the improvement of Akiochi soils. This experiment is carried out to investigate the effect of silicate of the mineral nutrition uptake by rice plants, using Ca45, P32, C136, and Mn54. The obtained results are summerized as follows; 1. Contents of mineral nutrients except silicon were higher in the rice plant grown in minus Si-culture solution a than in plus Si-plot. 2. Transpiration amounts appeared to be greater in the low content plant of silicon. 3. The rate of translocation to shoot of each ion absorbed by roots depended on the rate of transpiration. 4. It seemed that only CI uptake was found small in minus Si-root. 5. Silicate fetilizer did not affect the solubility of mineral ions in soils.

• Korean Journal of Organic Agriculture
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• v.19 no.1
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• pp.83-92
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• 2011

This study was established to investigate the effects of Ca application on fruit mineral nutrients, quality, and browning of 'Fuyu' sweet persimmon (Diospyros kaki). Ca foliar application at 40ml/20L/tree had a greater fruit Ca concentration than did control, Ca fertigation (40ml/20L/tree), and Ca foliar application (40ml/20L/tree) coupled with IBA fertigation (40ml/20L/tree). Fruit mineral nutrient concentrations for Mg, B, and Mn were similar or lower in the foliar treatment compared to other treatments. Fruit color was not affected. Ca treatment, whether foliar applied or fertigated, was effective in maintaining fruit firmness and in decreasing the browning symptom in fruit after MA storage at $0^{\circ}C$ for 60 and 100 days. Although Ca foliar application + IBA fertigation treatment improved fruit firmness, the positive effect on the browning and decay occurrences in fruit was not shown.

• Journal of the Korean Dietetic Association
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• v.9 no.1
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• pp.81-93
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• 2003

This study was performed to compare nutrient intake, bone density, total cholesterol and blood glucose in women who lived in Taegu city. The number of subjects participated in the study was 89 and they were classified into 3 groups by age. 30.3% of the subject were in their 20-34 years of age, 37.1% were in their 35～49 years of age and 32.6% were above fifty. A dietary record method was used to assess the nutritional intake of subjects. Anthropometric measurement such as body weight, height and WHR, and blood pressure, blood glucose, cholesterol and BMD were measured. The results were as follows, mean weight, WHR, SBP, and blood glucose and total cholesterol of the subjects above 50 years old were significantly higher than those of 20-49 years of age(p<0.05). Mean bone density in calcaneus of subjects aged above fifty was lower than those of under 49 years of age(p<0.05). Weight, BMI, waist circumference, WHR and SBP were positively correlated with age(p<0.01). WHR and body fat were positively correlated with BMI(p<0.01). Waist circumference was positively correlated with SBP(p<0.01). Bone mineral density was negatively correlated with age and SBP(p<0.01). Also BMD was positively correlated with weight(p<0.05). Energy intakes was positively correlated with bone mineral density(p<0.05). Fat intakes was negatively correlated with SBP and blood glucose(p<0.05). Calcium intakes was negatively correlated with SBP(p<0.05). Ca/P ratio was negatively correlated with age(p<0.05) and WHR(p<0.01). Zinc intakes was negatively correlated with SBP and blood glucose(p<0.05). From the findings, it is suggested that the women after menopause keep the optimum body weight and good eating habits. Especially intake of good quality protein, calcium and carbohydrate seemed to be important.