• Corrosion Science and Technology
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• v.7 no.1
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• pp.27-34
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• 2008

In industrial and fluid handling systems, frequently the protective film forming materials suffer from severe corrosion due to microbial effects. As an example, various micro-organisms, including bacteria, exist in seawater normally fed to power and desalination plants. Unless seawater intakes are properly disinfected to control these microbial organisms, biological fouling and microbial induced corrosion (MIC) will be developed. This problem could destroy metallic alloys used for plant construction. Seawater intakes of cogeneration plants are usually disinfected by chlorine gas or sodium hypochlorite solution. The dose of disinfectant is designed according to the level of contamination of the open seawater in the vicinity of the plant intake. Higher temperature levels, lower pH, reduced flow velocity and oxidation potential play an important role in the enhancement of microbial induced corrosion and bio-fouling. This paper describes, in brief, the different types of bacteria, mechanisms of microbiological induced corrosion, susceptibility of different metal alloys to MIC and possible solutions for mitigating this problem in industry. A case study is presented for the power plant steam condenser at Al-Taweelah B-station in Abu Dhabi. The study demonstrates resistance of Titanium tubes to MIC.

• Nutrition Research and Practice
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• v.8 no.4
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• pp.453-462
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• 2014

BACKGROUND/OBJECTIVES: The inverse relationships of combined fruits and vegetables intake with blood pressure have been reported. However, whether there are such relationships with salty vegetables has rarely been investigated in epidemiologic studies. We evaluated the relation of combined and separate intake of fruits, vegetable intakes, and salty vegetables, as well as sodium and potassium, with blood pressure among the middle-aged and elderly populations. SUBJECTS/METHODS: The present cross-sectional analysis of a prospective cohort baseline survey was performed with 6,283 subjects (2,443 men and 3,840 women) and free of hypertension, diabetes, cardiovascular diseases, and cancer. Dietary data were collected by trained interviewers using food frequency questionnaire. RESULTS: The significantly inverse linear trend of diastolic blood pressure (DBP) was found in fruits and non-pickled vegetables (81.2 mmHg in the lowest quintile vs 79.0 mmHg in the highest quintile, P for trend = 0.0040) and fruits only (80.9 mmHg in the lowest quintile vs 79.4 mmHg in the highest quintile, P for trend = 0.0430) among men. In contrast, sodium and sodium to potassium ratio were positively related with blood pressure among men (DBP, 78.8 mmHg in the lowest quintile vs 80.6 mmHg in the highest quintile, P for trend = 0.0079 for sodium; DBP, 79.0 mmHg in the lowest quintile vs 80.7 mmHg in the highest quintile, P for trend = 0.0199 and SBP, 123.8 mmHg in the lowest quintile vs 125.9 mmHg in the highest quintile for sodium/potassium). Kimchies consumption was positively related to DBP for men (78.2 mmHg in the lowest quintile vs 80.9 mmHg in the highest quintile for DBP, P for trend = 0.0003). Among women, these relations were not found. CONCLUSION: Fruits and/or non-pickled vegetables may be inversely, but sodium, sodium to potassium, and Kimchies may be positively related to blood pressure among men.

• The Korean Journal of Food And Nutrition
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• v.14 no.1
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• pp.1-9
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• 2001

The purpose of this study was to examine height, weight, chest circumference, sitting height, hemato logical status, eating behaviors and nutrient intakes for primary school children in Gwangju. The subjects consisted of 101 boys and 109 girls aged $10{\sim}12$ years old. There were significant differences in the height, weight, chest circumference, sitting height between the boys and girls. Hct, WBC, RBC, Hb, serum GOT, GPT and cholesterol were measured. With regard to meal regularity, 47.4% of the subjects has been 'regular'. With regard to meal volume, 15.8% of the subjects has been 'heavy'. With regard to meal balance, 44.7% of the subjects has been 'no'. The study also found that 63.4% of the subjects skipped breakfast, liked western food. Their dietary intakes were assesed for 1 day by means of 24 hours dietary recall method. The mean energy intakes of the subjects were 1,663kcal for boys and 1,427kcal for girls. The subjects for boys(girls) consumed 58(52)g protein, 43(60)g lipid, 4.8(6.5)g fiber, 470(514)mg calcium, 896(824)mg phosphorous, 9.6(16.4)mg iron, 3,301(3,468)mg sodium, 2,169(2,192)mg potassium, 388(466)RE retinol, 1.1(0.9)mg thiamin, 1.1(2.2)mg riboflavin, 12.2(26.3)NE niacin, 146(99)mg ascorbic acid and 251(159)mg cholesterol respectively. Energy, protein, calcium, iron and retinol intakes were lower than the Korean RDA. The intakes of fat, fiber, calcium, iron, sodium, retinol, riboflavin and niacin of the boys were significantly lower than those of the girls. There were positive correlations between meal time and protein intake or fat intake of fiber intake or iron intake or retinol intake : negative correlations between meal time and sodium intake : negative correlations between saltiness and cholesterol intake : positive correlations between use of perilla seeds and riboflavin intake or niacin intake : negative correlations between energy intake or carbohydrate intake or phosphorous intake : negative correlations between frequency of eating-out and protein intake or fat intake or fiber intake or iron intake or retinol intake or thiamin intake or riboflavin intake or niacin intake.

• Journal of the Korean Dietetic Association
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• v.23 no.1
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• pp.1-13
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• 2017

It is well known that malnutrition is a predictor of mortality in hemodialysis patients. The number of diabetic nephropathy patients is increasing rapidly. This study aimed to investigate nutritional status and nutrient intake according to the presence of diabetes among hemodialysis patients. The nutritional intake and general characteristics of outpatients at Ajou University Hospital (24 with diabetes and 30 without diabetes) were investigated between July and September 2015. Patients' general data were collected, and nutritional status by Patient-Generated Subjective Global Assessment (PG-SGA) was evaluated. Nutrient intakes were assessed according to 3-day food records. There was no significant difference regarding body weight between the two groups. However, the non-diabetic group showed a better nutritional status by Patient-Generated Subjective Global Assessment (PG-SGA) ($5.2{\pm}4.4$ vs. $8.0{\pm}4.3$ score, non-diabetics vs. diabetics, P<0.05). There was no difference in daily calorie intake ($1,473.9{\pm}370.5$ vs. $1,503.8{\pm}397.5kcal$) and protein intake ($60.3{\pm}19.7$ vs. $65.6{\pm}20.5g$) in those with diabetes. Intakes of vegetables protein, sodium, potassium, vitamin C, folic acid and fiber were significantly higher in the diabetic group compared to those of the non-diabetic group. There was no difference in daily nutrient intake between the hemodialysis weekday and weekend groups. The non-diabetic group had higher calorie and sodium intakes per meal in the hemodialysis weekday group, but the difference was not significant. Based on these results, intervention should be performed to improve nutritional status in consideration of diabetes and dietary patterns.

• 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.

• The Korean Journal of Food And Nutrition
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• v.25 no.4
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• pp.719-728
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• 2012

This study focused on the yearly-dietary habits, nutrition status, and health of female students residing in Seoul. A number of classes were assess based on their dietary behaviors in oder to attempt to determine differences in their attitudes to nutrition, according to age. The students of class 2011 (sophomore) ate meals more regularly than the female students of the 2008 class (p<0.05). It was found that sophomore female students of class 2008 consumed higher than average nutrient intake. Sophomore female students of the 2011 class consumed lower than average vitamin $B_2$, C, Ca, and Fe intakes. Folic acid in take was lower than average in both groups. Phosphorus and sodium intakes in both groups were excessive (p<0.05). When surveyed, sophomore female students of the 2008 class believed that the most important thing for health was exercise, whereas students of class 2011 believed that nutrient intake was the most important factor (p<0.05). Female students of the 2008 class exercised 1~2 times a week generally, whereas students of class 2011 exercised three times (43.2%) (p<0.05). Therefore, it is necessary to study changes in dietary habits and health status according to the age of students, and develop specific nutrition education programs for female students.

• Nutrition Research and Practice
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• v.1 no.1
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• pp.70-73
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• 2007

This study was conducted to determine the nutritional characteristics of horsemeat and bone meal in comparison with those of beef and pork presented by Dietary Reference Intakes For Koreans. Longissimus muscle and large metacarpal bone samples were collected from 20 fattened Jeju horses. Muscle samples were subjected to proximate analysis, assays for fatty acid profile and minerals, and bone samples to mineral assays. Horsemeal had similar levels of protein (21.1 vs 21.0 or 21.1%) and lower levels of fat (6.0 vs 14.1 or 16.1%) compared with beef or pork, respectively. Horsemeat had much higher levels of palmitoleic (8.2 vs 4.4 or 3.3%) and $\alpha-linolenic$ (1.4 vs 0.1 or 0.6%) acids than beef or pork, respectively. Linoleic acid was much higher in horsemeat (11.1%) and pork (10.1%) than in beef (1.6%). PUFA:SFA and n-6:n-3 ratios in horsemeat were 0.29 and 10.2, respectively. There were no big differences in mineral contents between horsemeat, beef and pork. For daily recommended mineral intakes of male adults (Dietary Reference Intakes For Koreans), phosphorus, sodium, potassium, iron, zinc and copper can be provided up to 24, 2.5, 6.7, 21, 26 and 40%, respectively, by 100 g raw horsemeat, but calcium and manganese levels are negligible. Horse cannon bone had much higher mineral contents especially in calcium (10,193 mg/100 g), phosphorus (5,874 mg/100 g) and copper (0.79 mg/100 g). Thiamin, riboflavin, niacin and retinol contents were 0.20, 0.21, 1.65 mg/100 g and $30{\mu}g/100g$, respectively. But ascorbic acid and beta-carotene were not detected. Our data demonstrated that higher levels of palmitoleic and $\alpha-linolenic$ acid in horsemeat than in beef and pork may be beneficial for human health. Horsemeat and bone meal are a good source of some minerals and vitamins.

• Nutrition Research and Practice
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• v.4 no.3
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• pp.222-228
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• 2010

Breastfeeding is an unequalled way of providing ideal food for the infants. The benefits of breastfeeding practices to infants and mothers are well documented. However, information on breastfeeding practices and its effect on body mass index (BMI) of mothers are scarce, particularly in Ekiti State of Nigeria. Therefore, the present study is designed to assess breastfeeding practices and its association with BMI of mothers. A descriptive and cross-sectional study was conducted among breastfeeding mothers that attended postnatal clinic of the state specialist hospitals and maternity centers in the study location. The specialist hospital and two-third of the nine maternity centers were purposively selected because of their health facilities and personnel. The mother-child pairs (200 respondents) were randomly selected from the study locations. Information on demographic characteristic, socio-economic parameters, nutritional knowledge of breastfeeding and dietary intakes of mothers were collected using questionnaires. BMI of mothers was determined as described by World Health Organization. Age distribution of mothers was between 25-34 years; and almost half of respondents had good educational background and were engaged in different occupations. The respondent monthly income ranged between = N = 3500 - 26000 ($26.92 - $200); and their dietary intakes varied between starchy and protein-based food. The result also showed that the respondent consumed enough nutrients to meet up the recommended daily allowance for protein, carbohydrate, fat, zinc, magnesium, sodium and phosphorous requirements. The BMI classifications showed that over three-fifth of respondents were normal, while the remaining were underweight (6%) and overweight/obese (26.5%). Also, large proportion of respondents engaged in exclusive breastfeeding and with good knowledge of breastfeeding practices. Statistically, exclusive breastfeeding practices had no correlation between the BMI and frequency of breastfeeding. The study, therefore, concluded that mothers had good knowledge of breastfeeding practice; and that there was no association between breastfeeding practices and BMI.

• Journal of Nutrition and Health
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• v.42 no.6
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• pp.547-558
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• 2009

This study was carried out to compare the effect of smoking on dietary habits, nutrient intakes and blood lipid profiles in 173 adult male drinkers. Subjects were classified by two groups, alcohol-only and alcohol-smoking, based on their alcohol or smoking habits. The BMI of the alcohol-smoking group was significantly lower than those of alcohol-only group. In dietary habits, the alcohol-smoking group had higher irregular breakfast and dinner intakes than alcoholonly group (p < 0.05). Plant lipid intake of the alcohol-smoking group was higher than those of alcohol-only group (p < 0.05) and the vitamin C intake of the alcohol-smoking group was lower than those of alcohol-only group (p < 0.05). With regard to the diet quality evaluation of subjects, the alcohol-smoking group showed significantly lower values than alcohol-only group in the nutrient density of carbohydrate, dietary fiber, sodium, potassium, vitamin $B_6$, and vitamin C. Also, with regard to the index of nutrition quality (INQ) and the nutrient adequacy ratio (NAR), the alcohol-smoking group showed significantly lower value than alcohol-only group in vitamin C. With these results, we found that the alcohol-smoking group had lower diet quality evaluation. The results of blood analysis showed that HDL-cholesterol in the alcohol-smoking group was significantly lower than that in the alcohol-only group. In conclusion, the alcohol-smoking group had greater health risk than the alcohol-only group. Particularly, alcohol-smoking caused irregular eating patterns and unbalanced nutrition intakes compared to alcohol-only and also changed blood composition as shown in the decrease of HDL-cholesterol. Besides, the index of coronary heart disease such as AI was higher in both groups suggesting that alcohol-only or alcohol-smoking cause health problems. Since there is the limiting point in which the comparative analysis of non-drinkers and non-smokers is unable to be performed in this study, further wide research is needed on that matter.

• The Korean Journal of Community Living Science
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• v.14 no.1
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• pp.107-117
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• 2003

This study was carried out to investigate the nutrients intakes, blood pressure, and correlations between these two factors in Korean rural adults(60 men, 60 women). Nutrients intakes were measured by analyzing with CAN Pro after weighing the each diets of the subjects had for 24 hours. We measured body mass index(BMI), waist to hip ratio(WHR), and fat content in the body besides blood pressure, and considered their relationship with blood pressure. This examination includes collections and analysis of serum and urine, and considers the correlations between blood pressure and serum or urinary factors. These results were as follows ; 1) The mean ages of men and women were 50.$\pm$12.6 and 46.0$\pm$12.5, respectively. The percentage of hypertensive was higher in men(43%) than in women(37%). 2) The values of WHR, body water and lean body mass were higher in men and the value of body fat was higher in women. Weight, BMI, waist or hip circumferences, and WHR were correlated with blood pressure in these subjects. 3) Though the levels of serum triglyceride, sodium, potassium and iron levels were higher in men and urinary Na was higher in women, these factors didn't showed any significant correlations with blood pressure in both sexes. 4) The values of calcium and vitamin B$_2$ intake in men and women, and of iron intake in women didn't meet the Korean recommended allowances(RDA). Animal protein and Na intakes were negatively correlated with blood pressure. These results showed that the levels of calcium and vitamin B$_2$ intake in both sexes and iron intake in women were lower than those of RDA, and weight, BMI, waist or hip circumferences and WHR were significantly correlated with blood pressure. Therefore we suggest that the farmers of this research need to increase intake of nutrients like calcium and vitamin B$_2$ and control the weight.