• Journal of Preventive Medicine and Public Health
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• 제39권5호
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• pp.389-396
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• 2006

Objectives: A community-based, cross-sectional survey was conducted to determine theprevalence of osteoporosis and to evaluate the effects of body composition, health behaviors and reproductive history on bone density in postmenopausal women. Methods: The study subjects were 362 postmenopausal women, aged 45 years old or over, who were invited to the hospital. Information on their socio-demographic characteristics and the potential risk factors such as their past medical history, smoking, alcohol intake, exercise, diet and menstrual/reproductive histories were collected by trained interviewers. Weight, height, the body mass index ($kg/m^{2}$), and body composition variables were measured. Bone mineral density of the lumbar spine was measured by dual energy X-ray absorptiometry (DXA). Results: The prevalence of osteoporosis was 30.6% in the $45{\sim}64$ years old women, 52.5% in the elderly women aged $65{\sim}74$, and 68.7% in the women aged 75 years or over. After adjustment for the effect of potential covariates, those women in the highest 25% (4th quartile) of the lean body mass are less likely to have osteoporosis (aOR=0.31, 95% CI=0.12-0.76), compared with the lowest quartile group. More parity also had significantly detrimental effects on osteoporosis. Conclusions: These findings suggest that the prevalence of osteoporosis in postmenopausal women increased with age from 46.3% of those aged 45-64 to 68.7% for those aged 75 and over. Lean body mass and parity appeared significant contributor to bone mineral density in postmenopausal women in this population.

• 한국작물학회지
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• 제31권4호
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• pp.493-498
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• 1986

품종, 시비량 및 재배관리를 동일하게 처리하였을 경우 보급년대가 상이한 각종 재배교식의 차이에 따른 종실의 생산능력을 검정하기 위하여 관행조파(60$\times$18cm), 광파(60$\times$30cm), 협폭파(40$\times$18cm), 세조파(30$\times$5, 20$\times$5cm) 및 전면전층파 등 6종류의 재배양식과 휴립재배법인 휴립이조법, 휴립광산파( 120$\times$90cm 및 90$\times$70cm) 및 휴립계조파(120$\times$90cm, 6예) 등 4종 총 10개 재배양식을 사용하여 조강보리와 그루밀를 공시품종으로 하며 시험한 결과는 다음과 같다. 1. 잡초발생량은 비파종부분의 폭이 클수록 많았고 수량과 부의 상관관계를 보였다. 2. 근분포정도는 수분소모정도와 정의 상관을 보였으며 휴간거리가 클수록 비파종부분의 근분포가 빈약하였다. 3. 양분흡수정도는 전면전층로타리시비법을 사용하는 세조파, 전면전층파, 휴립구산파 등이 종자하부 일정위치에 시비하는 작조시비법보다 낮은 경향을 보였다. 4. 종자밀도가 높은 관행조반, 광파, 협폭파 및 휴립이조파가 군집상태의 군낙을 이루어 월동률이 높은데 반하여 종자밀도가 낮아 독립수로 월동하게되는 세조파, 광조파, 전면전층파에서는 미기상의 영향으로 월동상태가 불량하였다. 5. 수량에 가장 공헌도가 큰 것은 수수였으며 균등배치가 이루워진 세조파가 광이용효율이 높고 수량도 가장 높았다.

• Journal of Microbiology and Biotechnology
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• 제26권5호
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• pp.867-875
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• 2016

Archaea substantially contribute to global geochemical cycling and energy cycling and are impacted by land-use change. However, the response of archaeal communities to a change from upland field to paddy field has been poorly characterized. Here, soil samples were collected at two depths (0-20 cm and 20-40 cm) from one upland field and six paddy fields that were established on former upland fields at different times (1, 5, 10, 20, 30, and 40 years before the study). Barcoded pyrosequencing was employed to assess the archaeal communities from the samples at taxonomic resolutions from phylum to genus levels. The total archaeal operational taxonomic unit (OTU) richness showed a significant positive correlation with the land-use change duration. Two phyla, Euryarchaeota and Crenarchaeota, were recorded throughout the study. Both the relative abundance and OTU richness of Euryarchaeota increased at both depths but increased more steadily at the subsurface rather than at the surface. However, these data of Crenarchaeota were the opposite. Additionally, the archaeal composition exhibited a significant relationship with C/N ratios, total phosphorus, soil pH, Olsen phosphorus, and the land-use change duration at several taxonomic resolutions. Our results emphasize that after a change from upland fields to paddy fields, the archaeal diversity and composition changed, and the duration is an important factor in addition to the soil chemical properties.

• 유통과학연구
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• 제4권1호
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• pp.161-173
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• 2006

일반적으로 풍수라고 하면 대부분의 사람들이 묏자리를 잡는 기술쯤으로 그것도 부모 산소를 잘 쓰면 후손이 잘 될 것이라는 철저히 이기적인 측면의 사고방식에서 비롯된 편협된 시각이 주를 이루어, 이러한 왜곡된 풍수가 신앙이상의 차원에서 신봉되어 왔다. 그러나 최근에 이르러 건축학과 조경학 그리고 인테리어 등의 분야에서 풍수이론이 활용되면서 이에 대한 연구가 활발히 진행되고 있다. 점포의 입지를 결정하기 위해서는 입점 예정지를 분석해야 한다. 보통 상권분석을 실시하여 시장잠재력의 크기만을 측정하게 된다. 그러나 이러한 시장잠재력의 크기만으로는 점포위치에 대한 충분한 해답을 줄 수 없다는 것이 논자의 주장이며 상권분석을 통한 시장잠재력의 크기와 병행하여 동양 사상인 풍수지리의 이론을 결합하여 좋은 기(에너지)를 받을 수 있는 점포위치가 선정 되어야 한다는 것이다. 본 논문은 이러한 시도의 출발점이다. 향후 보다 과학적이고 체계적이며 통계적으로 유의한 실증적 분석의 연구가 진행 되어야 할 것이다.

• 기술혁신학회지
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• 제18권1호
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• pp.126-150
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• 2015

본 논문은 한국정부가 유치한 아태원자력협정(RCA)사무국의 국제기구화 추진 현황과 향후 과제를 중심으로 분석하였다. 주요 내용으로는 RCA사무국 유치와 지원활동, 국제법적 지위 확보와 관련된 주요 문제점에 대해서 기술하였다. 이와 함께 RCA 협정개정과 사무국의 국제기구화 추진에 대한 주요 쟁점 분석과 대응 방향을 분석하였다. 한국은 개도국으로서 원자력의 이용개발을 성공적으로 수행한 모델로 평가받고 있으며 앞으로 원자력 기술 선진국으로서 역할을 보여주는 것이 필요하다. 여기에는 국제기구 유치가 적절한 수단이 될 수 있다. 한국정부가 유치에 성공한 RCA사무국의 국제법적 지위 확보는 협정개정이나 보조협정의 체결이 필수적이다. 이를 위해서는 2017년 협정개정과 이후 본부협정 체결을 목표로 범부처 차원의 RCA사무국 국제기구화기획단을 운영하는 것이 바람직이다. 이와 함께 사무국의 지원단도 구성하여 사무국의 사업 수행과 기술적 지원을 수행하는 것도 필요하다.

• 한국태양에너지학회:학술대회논문집
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• 한국태양에너지학회 2008년도 춘계학술발표대회 논문집
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• pp.43-48
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• 2008

Through simulations and field experiment on A.C. parallel operation of both Utility Interactive Photovoltaic System and Diesel Engine Revolving Field Type Synchronous Generator, following factors have been found. First, the inverter should be operated in three modes of frequency(mode.1: ${\pm}$0.3Hz, mode.2: ${\pm}$1Hz, mode.3: ${\pm}$2Hz) as default, considering properties of operating Synchronous Generator. Second, as a result of supplying 13.5kW of residual power, it has been found that Synchronous Generator takes the power input only as reactive power, because it was electrically stable with frequency of 60.14Hz and high voltage of 222.3V even when power factor was -0.94. Besides, it was mechanically stable, too, because the quake, noise, and temperature of Synchronous Generator in this case were 7.5mm/s, 97dB, and $6^{\circ}C$ respectively, which were lower than normal load connection of 145.6kW; 11.03mm/s. Thus, load share of Revolving Field Type Synchronous Generator reduces according to the supply of Photovoltaic System to the load power. In this experiment, 200kW of Synchronous Generator and 40kW of Photovoltaic System were operated in parallel. The load share was 20% in maximum. and 11.1lit/hr of fuel was saved.

• 한국환경과학회지
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• 제22권6호
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• pp.733-744
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• 2013

This study was to investigate characteristics of Seoho watershed in Suwon city. $BOD_5$ and SS were selected due to the one of the important factors of the water qualities. Monitoring was conducted monthly for four years during the non-rainfall time. Also, we have been monitored $BOD_5$, $COD_{Mn}$, SS, TN and TP with two times sampling after the rainfalls. The highest concentrations of $BOD_5$ and SS were observed in downstream compare with upstream and midstream during the non-rainfall time. No change was observed in $BOD_5$ and $COD_{Mn}$ during the non-rainfall time and after the rainfalls. The monitoring result indicated that the concentration of SS was the highest in downstream after the rainfalls. We have collected the samples two times after the rainfalls. The rainfall intensity in first sampling was two times higher than second sampling. TN and TP concentrations were increased with increasing the rainfall intensity at all stream. The ESB (Ecological Score of Benthic macroinverterbrate community) index was used to evaluate the statement of stream. ESB results were identified that the upstream is protected waters and the down and midstream is reformed waters. EBS analysis results indicated that the Seoho watershed was ${\beta}$-mesosaprobic at all stream.

• 한국주거학회논문집
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• 제22권4호
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• pp.103-112
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• 2011

The purpose of this study was to determine the incomplete aspects of the government pilot project 'Livable City Making' Also, the study was conducted to consider a plan that residents will satisfy for the realization of the project. The study used a case study and a survey method in research process. For the case study, two projects in Busan that have similar planning were chosen. The contents of the survey included the residents' interest in their housing area, their recognition and opinions of the pilot project, their satisfaction about the environmental alterations, and their thought about conditions of sustainable housing. The main results of this study were as follows. First, the residents were satisfied with the alteration of the street space and the provision of green and open spaces. Meanwhile they revealed that the preservation of the natural environment and the vitalization of community are insufficient. Second, they also believed that the construction of the pedestrian streets, the provision of parking lots, and the remodeling of the deteriorated buildings are incomplete. Third, the residents believed that the following provisions need to be made for successful sustainable housing waste discharge needs to be minimized, facilities need to be used for saving energy, opportunities for employment need to be provided within their housing areas, and safe street spaces and comfortable traffic systems need to be provided.

• Asian Pacific Journal of Cancer Prevention
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• 제14권5호
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• pp.2747-2751
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• 2013

In this study we assessed the dietary phytochemical index in relation to the risk of breast cancer in women. This case-control study was conducted on 100 incident breast cancer cases and 175 healthy controls. Data regarding socio-demographic factors, medical history, medications, and anthropometric measurements were collected. Dietary data were obtained using a validated food frequency questionnaire and a energy-adjusted dietary phytochemical index (PI) was calculated. The odds ratios of breast cancer were assessed across energyadjusted PI quartile categories. The mean age of participants was $46.2{\pm}8.9$ and $45.9{\pm}9.4$ years in cases and controls, respectively. The mean PI across quartile categories was $13.9{\pm}2.6$, $21.1{\pm}1.8$, $26.7{\pm}2.1$, $41.6{\pm}10.2$ in the first, second, third and fourth quartiles, respectively. After adjustment for all potential confounders, the risk of breast cancer in the forth quartile of dietary PI was significantly decreased (OR=0.08, 95%CI=0.01-0.84). Higher intake of phytochemical-rich foods is associated with lower risk of breast cancer.

• Journal of Nutrition and Health
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• 제40권3호
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• pp.249-258
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• 2007

Benign prostatic hyperplasia (BPH) is one the most common prostate diseases in middle aged and elderly men. This study was conducted to investigate diet and lifestyle risk factors for benign prostatic hyperplasia in a community-dwelling free-living population group. The dietary data were collected from the 601 male subjects aged 50-79 years using the 24-hour recall method. The mean age of the BPH group ($63.0{\pm}7.9$ years) was significantly higher than that of the non-BPH ($58.8{\pm}7.4$ years). Among many nutrients, the amount of animal fat intake was increased while that of carbohydrate intake decreased in subjects with BPH compared to those with non-BPH. In BPH subjects, the proportion of energy from fat was also greater than in subjects with non-BPH. The logistic regression analysis on the food consumption data showed that the consumption of total animal food was increased while that of mushrooms was decreased in patients with BPH compared to the subjects with non-BPH. The age-adjusted odds ratios and 95% confidences limits for BPH incidence in subjects whose milk and milk products, beverages and alcoholic liquors intake was greater than the median were 1.796 (1.167-2.782) and 1.738 (1.129-2.676) respectively, compared to those in subjects whose intakes were below the median. These results may be applicable in the development of a nutrition intervention and education program toward a reduction in the risk for benign prostatic hyperplasia.