• 한국미생물·생명공학회지
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• 제28권4호
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• pp.239-241
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• 2000

From 5 forest soil samples, the isolation frequency of oligotrophic Actinomycetes was investigated with nutrient and minimal media. The frequency of soil Actinomycetes by the minimal media. The frequency of soil Actinomycetes by the minimal media of DHV, WA, BA and NA was similar to the value by HV nutrient medium. In addition, different Actinomycetes were isolated from all the media used in this experiment and then their growth were tested on nutrient (Bennett's agar) and minimal media(WA). In consequent, the number of different Actinomycetes from minimal media was 26.1 strains, whereas the number of from nutrient medium (HV) was 26.6 strains. Furthermore, the percentage of facultative and obligate strains among the oligotrophic Actinomycetes was 90% and 10%, respectively.

• Journal of Korean Biological Nursing Science
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• 제14권3호
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• pp.147-155
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• 2012

Purpose: This study is to investigate perceived stress, depression, body mass index (BMI), and nutrient intakes of soldiers in the army. Methods: The subjects were 301 soldiers recruited from two divisions of the army in Kangwon-Do. The data was collected from August 3 to 9, 2009. Perceived stress, depression, lifestyle, dietary habits, BMI, and nutrient intake were assessed. Results: Subjects' distribution for normal weight, underweight, overweight, and obese was 67.4%, 0.7%, 16.3%, and 15.6%, respectively. BMI was related to class, service branch, duration of military service and being on a diet, whereas BMI was not found to be related to perceived stress, and depression. Some nutrient intakes such as dietary fiber, vitamin C, and Calcium was related to depression. Conclusion: This study suggests that soldiers need to undergo stress, depression management, and a nutritional education program.

• The Korean Journal of Ecology
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• 제19권5호
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• pp.487-496
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• 1996

This study was conducted to investigate pollutant loading, were quality and plant distribution of 8 streams which are tributaries of the Youngsan River. The nitrate reductase activity (NRA) and nutrient removall capacity of the most frequently occurring aquatic plants on streamside were also determined. As a result, the pollutant loading appeared to be correlated with the area of watershed, while the water quality was related to the land use pattern of each steam. The aquatic plants were distributed differently among the streams; Hydrilla verticillata - Potamogeton crispus, Numphoides peltata - Hydrocharis dubia and Polygonum thunbergii - Phragmites japonica were dominant at the Orye Chon, Jungan Chon, Whangryong River and Jiseok Chon, while potamogeton crispus - Lemma paucicostata, Zizania latifolia - Phragmites communis were dominant at the Youngam Chon and Munpyeong Chon. Persicaria hydropiper and Echinochloa crus-galli var. oryzicola were dominant at Kwangju Chon which was polluted with domestic wastewater. >From the measurement of leaf NRA for dominant species, the highest value of NRA was shown by the Polygonum thunbergii, followed by Oenanthe javanica > Phragmites communis > Zizania latifolia > Lemma paucicostata. The highest nitrogen and phosphorus removal capacity was found in Phragmites communis.

• Journal of Ecology and Environment
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• 제35권3호
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• pp.227-234
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• 2012

Quercus aliena and Q. serrata are both occur as natural vegetation alongside natural freshwater bodies of the southern Korea Peninsula. Q. serrata dominates over Q. aliena as secondary forest vegetation in the present day. In order to explain these natural distributional traits of the oak species, we conducted some experiments with oak seedlings which treated with major important environmental resources, including light, moisture and nutrients, under controlled conditions. We then measured the ecological niche breadths and overlap from 15 eco-morphological characteristics. The ecological niche breadth of Q. aliena and Q. serrata were higher in terms of the nutrient factor applied, but was lower terms of light. The niche breadth of Q. serrata was wider than that of Q. aliena in light and moisture exposure. On the other hand, the niche breadth of Q. aliena was similar with that of Q. serrata in terms of the nutrient factor applied. These results imply that Q. serrata has a broader ecological distribution in over a wider variety of light and moisture environments than that of Q. alien. Ecological niche overlap between two oak species was the widest in terms of the light treatment factor applied, and narrowest in terms of moisture. This response pattern was also verified by cluster and principle component analysis. These results suggest competitive interactions between Q. serrata and Q. aliena seedlings may be higher for light resources than moisture or nutrient resources, and that Q. serrata is more shade tolerant than Q. aliena.

• Journal of Nutrition and Health
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• 제42권3호
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• pp.246-255
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• 2009

식품섭취빈도조사지는 식품 목록 종류의 구성방식에 띠라 식품을 기초로 한 조사지와 음식을 기초로 한 두가지 형태로 나누는데, 식품을 기초로 한 조사지는 유지류와 양념류의 영양소를 반영하지 못한다는 문제점이 지적되고 있다. 이 연구는 유지류와 양념류가 대상자 영양소 섭취량과 섭취 분포에 미치는 영향을 파악하고자, 한 농촌지역에서 식생활 요인 평가를 위해 개발하여 사용되고 있는 음식을 기초로 한 식품 빈도조사지를 이용하여, 1) 전체 영양소 섭취량, 2) 유지류를 제외한 영양소 섭취량, 3) 유지류와 양념류를 제외한 영양소 섭취량, 위의 3가지 형태의 영양소 섭취량을 산출하여 영양소 섭취량의 비교와 상관성, 영양소 섭취 분포 일치도를 분석하였다. 그 결과, 총 영양소 섭취량과 유지류를 제외한 영양소 섭취량을 비교하였을 때, 유지류를 제외한 경우, 열량, 식물성지방, 비타민 E 섭취량이 유의하게 낮아졌고, 단순 카파지수는 각각 0.95 (${\kappa}{\omega}$ = 0.98), 0.64 (${\kappa}{\omega}$ = 0.81), 0.59 (${\kappa}{\omega}$ = 0.79) 였다. 유지류와 양념류를 모두 제외한 영양소 섭취량과 총 영양소 섭취량과 비교하면, 유지류와 양념류를 모두 제외하였을 때, 유지류와 양념류에 포함되어 있지 않은 영양소인 동물성 단백질, 동물성 지방, 레티놀을 제외한 대부분의 영양소의 섭취량이 유의하게 낮았고, 그 중 식물성 지방 (K = 0.64, ${\kappa}{\omega}$ = 0.81), 비타민 E (K = 0.59, ${\kappa}{\omega}$ = 0.79), 나트륨 (K = 0.61, ${\kappa}{\omega}$ = 0.80)의 단순 카파지수는 0.8 이하로 다른 영양소에 비해 상대적으로 낮았다. 영양소 섭취 분포 일치도는 열량 보정 후에 조정 전보다 더 낮아졌다. 이상의 연구 결과, 유지류와 양념류를 포함하지 않은 경우 식물성 지방, 비타민 E, 나트륨의 섭취량을 저 평가하였고, 대상자의 영양소 섭취 수준의 분포에 영향을 미쳤다. 따라서, 유지류나 양념류의 조사가 없는 식품기반 식품섭취빈도 조사를 이용하여 질병과의 연관성을 분석할 경우 결과에 대한 해석에 주의해야 한다.

• 한국해양공학회지
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• 제17권5호
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• pp.32-38
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• 2003

This study investigates the distribution characteristics and relationship of water quality, and analyzes the spatial and temporal variation and distribution of the pollutant loads at Yeong-il Bay. The results of these analysis, the concentrations of nutrient loads (T-N and T-P), both appeared to be at the maximum value in November, while most small values were taken in May for the T-N, and in August for the T-P. For COD, the maximum concentration was in August, which has much precipitation during the same season, T-N was at the mean, and T-P was at the minimum value. Using the cluster analysis to develop the division of the sea basin by the dendrogram, before and after construction of Pohang New-port, the variation characteristics of water quality of Yeong-il Bay were discussed. The in flowing pollutant loads were transported to the landward by the high-density salinity water volume of the bottom layer therefore, it formed nutrient trap or coastal trapping areas of the pollutant load. By this mechanism, it is clear that the water volume with high-density nutrient exists on both sides of the Pohang New-port. Thus, the sea basins increasing concentration of the pollutant load at Yeong-il Bay are most prevalent at Hyeong-san estuary, the Pohang Old, and New-port. To improve water quality of this sea basin, the reduction of these nutrients loads should be the highest priority.

• 대한지역사회영양학회지
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• 제15권1호
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• pp.61-72
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• 2010

The purpose of this study was to evaluate the effect of a weight control program on anthropometric values, serum lipid profiles and nutrient intakes. The subjects of this study were 38 obese children (boy : 17, girl : 21) with obesity index over 120%. The weight control program for obese children included nutritional education (50 min) and exercise (50 min) for 10 weeks. The nutrition intakes of the children were surveyed before and after the weight control program by 24hr recall test. The BMI, R$\ddot{o}$hrer Index, Obesity Index, WHR (Waist - Hip ratio) and body fat(%) were significantly decreased after completion of the weight control program. The total cholesterol and HDL-cholesterol of subjects were significantly increased after the weight control program. Distribution of serum lipid profiles was slightly changed. The energy intakes were significantly decreased (p < 0.001). from 1760.8 kcal to 1435.2 kcal. In addition, the intakes of P, Zn, retinol, vitamin $B_1$, vitamin $B_2$, vitamin E and niacin were significantly decreased. while intakes of vitamin C and folate were increased. Calcium and folic acid were upper 25% of subjects, under EAR(Estimated Average Requirements) intake before the weight control program. The distribution of energy intakes was significantly changed into positive status; fat percentage was decreased 26.3% to 22.1% (p < 0.01). Carbohydrate was increased 58.6% to 61.2% (p < 0.05). Meal distribution of energy intakes was changed; calorie percentage from lunch significantly increased from 32.2% to 38.3%. Calorie percentage from snack significantly decreased from 17.7% to 13.5%. In conclusion, weight control program for 10 weeks is effective in obesity index and nutrient intakes although serum lipid values were a little changed.

• Preventive Nutrition and Food Science
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• 제12권3호
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• pp.154-159
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• 2007

This study was conducted to find obesity, biochemical indices and nutrient intakes in type Ⅱ diabetes mellitus with hypertension in Gwangju area. Subjects were divided into two groups based on the status of hypertension. Duration of 139 normotensive type Ⅱ diabetes mellitus was $49.8{\pm}80.2$ months while that of hypertensive type Ⅱ diabetes was $79.7{\pm}95.5$ months. Anthropometric measurement revealed that subjects in both groups were in overweight determined by BMI, though there was no significant difference between two groups. Contrastingly, obesity rate and subscapular fat distribution were a good predictor to identify hypertensive group due to the significant differences between two groups, regardless of sex. Hypertensive type Ⅱ diabetes mellitus is significantly associated with more elevated cholesterol and fasting blood glucose level. Triglyceride level in the hypertensive female was prominent. Significant gender differences were shown in energy, carbohydrate, protein, Ca, Zn, vitamin $B_{6}$ and cholesterol intakes. Nutrient intakes of female normotensive group were higher than those of female hypertensive group except for riboflavin. However, different pattern on nutrient intakes in male was noted. Thus, sex is a great determinant to influence nutrient intakes in subject. Effective nutrition education program targeting type Ⅱ diabetes mellitus, especially hypertensive type Ⅱ diabetes mellitus should be developed and implemented to control blood glucose and lipidemia. It might be suggested to consider the importance different approaches of nutrition education program to both genders.

• 한국환경과학회지
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• 제15권9호
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• pp.819-827
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• 2006

We study on the dynamic interaction with a simulated physical-biological coupled model response to nutrient reduction scenario in Jinhae Bay. According to the low relative errors, high regression coefficients of COD and DIN, and realistic distribution in comparison to the observation, our coupled model could be applicable for assessing the marine ecosystem response to nutrient input reduction in Jinhae Bay. Due to the new construction and expansion of sewage treatment plant from our government, we reduce 50% nutrient inputs near Masan Bay and sewage treatment plant. COD achieves Level II in Korea standard of the water quality from the middle of the Masan Bay to all around Jinhae Bay except the inner Masan Bay remaining at Level III. When our experiment reduces 50% nutrient inputs near Masan Bay and Dukdong sewage treatment plant simultaneously, COD decreases to about 0.1-1.2 mg/L $(128^{\circ}30'{\sim}128^{\circ}40'\;E,\;35^{\circ}05'{\sim}35^{\circ}11'\;N)$. The COD from the middle of the Masan Bay to Jinhae Bay achieves Level II.

• 한국산림과학회지
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• 제106권4호
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• pp.388-396
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• 2017

본 연구는 약 40년 전 식재된 왕대와 솜대를 대상으로 지상부 바이오매스의 기관별 양분 분포를 조사하기 위하여 실시하였다. 대나무 줄기, 가지, 잎에 양분 분포 비교를 위해 왕대 및 솜대 각 14본(당년생과 다년생 각 7본)을 선정하여 벌채하고 양분 분석을 실시하였다. 대나무 줄기, 가지, 잎에 양분 농도(concentration) 중 마그네슘은 솜대에 비해 왕대가 높았으며, 질소, 인, 칼륨은 당년생 대나무가 다년생 대나무에 비해 유의적으로 높은 농도를 보였다. 양분 농도의 크기는 잎에 경우 탄소 > 칼륨 >= 질소 > 인 >= 칼슘 >= 마그네슘 순이었다. 줄기, 가지, 잎에 저장된 총 양분 함량(content)의 경우 왕대가 솜대에 비해 높아, 왕대가 솜대에 비해 양분 요구량이 크게 나타났다. 지상부 바이오매스의 양분 함량 크기는 왕대와 솜대 모두 탄소 > 칼륨 > 질소 > 인 > 칼슘 >= 마그네슘 순으로 두 대나무가 같은 경향을 보였다. 본 연구 결과에 따르면, 유사한 입지에 생육하는 왕대와 솜대의 경우 양분 함량에 차이를 보였으며, 양분 요구량은 왕대가 솜대에 비해 높게 나타났다.