• 한국식품영양학회지
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• 제25권4호
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• pp.1047-1054
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• 2012

The purpose of this study was to compare the anthropometry, serum lipid levels, dietary behavior and health-related behaviors of shipbuilding workers. The education level was significantly higher in office workers than laborers, while age, monthly income and working years were not significantly different between both groups. The serum triglyceride, glucose concentration and AI were significantly higher in office workers than in laborers, but the serum LDL-cholesterol and HDL-cholesterol concentrations were significantly higher in laborers than in office workers. The frequency of breakfast and coffee intake was significantly higher in office workers than in laborers. In the office workers, age was positively correlated with systolic blood pressure but was negatively correlated with hemoglobin and hematocrit concentration In the laborers, working year was negatively correlated with hemoglobin, total cholesterol and serum LDL-cholesterol concentrations. Exercise was negatively correlated with total cholesterol concentration, triglyceride and LDL-cholesterol concentration and AI in the office workers. The results of this study showed that office workers are more prone to related chronic degenerative diseases. Therefore, nutritional education for the provention of chronic degenerative diseases of shipbuilding workers needs to be more focused on improving the health status of office workers.

• 한국식품영양과학회지
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• 제19권2호
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• pp.180-186
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• 1990

For the investigation of the effects of G. lucidum on prevention and attention of hypercholeste-rolemia and atherosclerosis dietary hypercholesterolemic rats were fed with 2.0g% G. lucidum extracts for 4 weeks. And then concentrations of total cholesterol triglyceride phospholipid in serum and liver and those of HDL-cholesterol lipid peroxide glucose in serum were analyzed. Concentration of total cholesterol in serum was the lowest in the control group(basal diet+ wa-ter) and HDL-cholesterol in serum were significantly higher in groups of control 2(hyperchole-sterolemic ratslongrightarrowbasal+water) and 4(hypercholesterolemic ratslongrightarrowbasal+G.l. extract) The concentration of triglyceride in serum were signficantly lower in groups 4 and 5(hypercholeste-rolemic ratslongrightarrowcholesterol+G. l. extract) than in the control group. Phospholipid content in serum were not significantly different among all groups. Ttal cholesterol in liver was significa-ntly higher in hypercholesterolemic rats than in the control group and triglyceride concentration were signficantly higher in groups of 3(hypercholesterolemic ratslongrightarrowcholesterol+water) and 5 than others. Phospholipid in liver was significantly higher in group 3 than in the control group but groups of 4 and 5 were lower. As for lipid peroxide in serum was the lowest in group 4 and glucose concentration was lowest in group 5 than in other groups.

• 생약학회지
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• 제27권3호
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• pp.246-253
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• 1996

Coptis rhizoma was extracted with methanol or hot water. Methanol extracts had higher berberine content than water extracts, whereas the contents of Ca, Mg, Zn and K were higher in the water extracts. Rats were fed on the purified diets rich in 0.12% cholesterol only or supplemented with 0.5% of each extracts for four weeks. The concentration of total serum cholesterol was significantly lower in the rats given the extracts, irrespective of the extractants. Although the concentration of serum HDL-cholesterol was comparable among the groups, the ratio of HDL-/total-cholesterol was higher in rats given the extracts. The concentration of serum free fatty acids and ketone body were significantly elevated in rats given the extracts. On the other hand, the extracts supplements significantly decreased the contents of liver cholesterol and triacylglycerol. The amount of fecal bile acids was markedly higher in rats given the extracts, especially in those given water extracts. The results show an effective hypocholesterolemic action of Coptis rhizoma and it seems that the lower concentration of serum and liver cholesterol is resulted from the increased fecal bile acids in rats.

• 한국환경과학회지
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• 제12권12호
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• pp.1303-1308
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• 2003

This experiment was carried out to investigate the effects of heavy metals (cadmium, chromium, copper and lead) on the seed germination of Arabidopsis thaliana, and examinated the removal effects of biostone and green tea on the heavy metal toxicity. Cadmium and chromium among the four heavy metals had no effect on the seed germination even in the concentration fifty times higher than in the official standard concentration of pollutant exhaust notified by the Ministry of Environment. However, seeds were not germinated in the concentration of copper ten times higher and in the concentration of lead fifty times higher than the official standard concentration. When seeds were sown in the solutions of lead (15, 20, 25 and 30 mg/L) and copper(15 and 20 mg/L), the seed germination rates were 0％ and less than 10％, respectively. However, when biostone(3 g/30 $m\ell$) was added, the seed germination rate was 100％ in all the concentrations. The germination rate was 100％ in distilled water and copper solution (5 mg/L). However, green tea (0.2 g/30 $m\ell$) was added, the seed germination rate was 0％ in both. The results show that cadmiun and chromium had no effect on the seed germination, but lead and copper decreased the rate of seed germination of Arabidopsis thaliana, Biostone removed heavy metal toxicity, but green tea did not removed heavy metal toxicity during germination.

• Current Research on Agriculture and Life Sciences
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• 제27권
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• pp.53-58
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• 2009

This experiment was conducted to determine the amount of asparagine content in soybean sprout soup as well as its effect on the regulation of blood alcohol concentration in human body. Asparagine content and alcohol concentration in blood were analyzed using the amino-acid analyzer and alcohol tester, respectively. Asparagine content in soybean sprout soup was highly significantly different among sprout soups sampled from different restaurants, although the boiling time and amount of sprout used were different among the samples. Significantly higher asparagine content was observed in soups with higher amounts of sprouts (2.81% in 500 grams of sprout) and 10 minutes after boiling with other solid ingredients in the soup. Lower concentration of alcohol in blood was recorded in persons with higher body weight. The asparagine+soybean extract (eaten immediately after drink) lowered the blood alcohol concentration significantly followed by only asparagine and control. The blood alcohol concentration after drinking become zero earlier (by 30 minutes), when asparagine+soybean extract or only asparagine was consumed as compared to control.

• 대한지역사회영양학회지
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• 제18권3호
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• pp.223-232
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• 2013

The purpose of the study was to investigate the influence of salt (NaCl) recognition threshold and pleasant salt concentrations of Korean rural elderly subjects on preference of salty food as well as food group consumption patterns. The subjects were 213 elderly people (male 71 and female 142) over 65 and under 90 yr of age from Sunchang area. The higher values were found with male subjects in the areas of basic taste recognition threshold and pleasant concentration level of salt. The taste sensitivity scores of male subjects did not decrease with the increasing age, but female subjects exhibited a significant decrease with the age. The major determinant factor of salt preference of the elderly subjects in this study appeared to be personal pleasant concentration of salt rather than salt recognition threshold level and this trend was more evident in males than in females. The subject group of lower salt pleasant concentration i.e. consuming less salt showed the higher number of fruit and fruit juice intakes per week, and higher MNA (define this) scores were implying that they display more desirable nutritional status. Therefore, nutritional education focused on not only a variety of food consumption but also lowering pleasant salt concentration levels is advised to improve the quality of nutrition in the elderly.

• 대한수의학회지
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• 제6권1호
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• pp.37-41
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• 1966

Observations were made on the total serum protein values of 532 Korean cattles(341 females and 191 males and 191 males) and 90 milk cows in order to determine the effects of age, sex and nutritional status upon serum protein. Results obtained in this studies were summerized as follows; 1. The concentration of total serum protein was higher in the adult than in the younger and was generally increased with the advance of age in Korean cattle. The rate of increase in total serum protein content was more significant in the young than that of adult. 2. The average concentration of total serum protein of male did not differ significaltly from that of females in Korean cattle. 3. The concentration of total serum protein in milk cows were significaltly higher than that of Korean cattle cows and this difference seemed to be influenced by rations high in protein 4. A general tendency showed that the concentration of total serum protein was significaltly higher in the Korean cattle keeping with good nutritional status than that of poor nutritional status.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2008년도 추계학술대회B
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• pp.2934-2939
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• 2008

We conducted a test of a direct burning of crude Jatropha oil (CJO) in a commercial boiler system. The fuel, crude Jatropha oil is not biodiesel which comes from transeterification process of bio oil, but it is pure plant oil. The higher heating value (HHV) of the CJO is 39.3 MJ/kg (9,380 kcal/kg) and is higher than that of a commercial heating oil, 37.9 MJ/kg. The kinematic viscosity of CJO is 36.2 mm2/s at $40^{\circ}C$ and 8.0 mm2/s at $100^{\circ}C$. The burner used in the test is a commercial burner for a commercial heatingoil and its capacity is 140 kW (120,000 kcal/h). We did a preliminary test whether the combustion is stable or not. The preliminary test was a kind of open air combustion test using the commercial burner with crude Jatropha oil. We found that the combustion can be stable if the crude Jatrophaoil temperature is higher than $90^{\circ}C$. We measured the flue gas concentration by using a gas analyzer. The NOx concentration is $80{\sim}100\;ppm$ and CO concentration is nearly 0 ppm at flue gas O2 concentration of 3.0 and 4.5%.

• 설비공학논문집
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• 제16권10호
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• pp.908-913
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• 2004

This study investigates the effect of the wave form of pulse energization and dust concentration on the collection characteristics of a moving electrode electrostatic precipitator (MEEP). Under the same specific corona power, the collection efficiency of the MEEP for the lower dust concentration ($2g/m^3$) becomes higher than that for the higher concentration ($10g/m^3$). Both the collection efficiency and specific corona power increase with increasing pulse period for the same value of applied voltage. The collection efficiency of MEEP is higher than that of the conventional fixed plate electrode electrostatic precipitator.

• 한국대기환경학회지
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• 제19권5호
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• pp.611-619
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• 2003

Characteristics of the ozone concentrations in Seoul were analyzed for the data between May and September from 1996 to 2000. Observation data from 27 stations in Seoul are used. Among the results from 27 stations, representative results from 2 stations (City hall and Gwanak representing downtown and background areas of Seoul, respectively) are presented. The 24-hour average ozone concentrations of Gwanak (28.6 ppb) are higher than City hall (14.9 ppb). The 24-hour average ozone concentrations on Sunday are higher than other days at both sites. During weekday, the 24-hour average ozone concentrations on Wednesday are higher than other days. Although the mean of the I-hour daily maximum ozone concentrations at Gwanak is higher than City hall, the . ozone concentrations above 95th percentile at City hall are higher than Gwanak. As a result, the number of days on which the 1 - hour ozone concentration exceeding 100 ppb and 120 ppb at Gwanak (17 and 3) are lower than City hall (29 and 9). To sum up, both sites are VOCs limited region and the mean ozone concentration in Gwanak is higher because of the lower N0$_2$ concentration. But high ozone cases occur more frequently in City hall when conditions are right.