• 한국물환경학회지
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• 제33권4호
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• pp.394-402
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• 2017

In korea, TMDL is being implemented to manage nonpoint pollution sources as well as point pollution sources. LDC is being used for the planning of TMDL. In order to analyze the water quality using LDC, it is necessary to prepare FDC using the daily flow data. However, only the daily flow data is measured at the WAMIS branch, and 8days flow data and water quality data are measured at the monitoring Networks. So, in many researches, the water quality is being grasped by deriving the LDC using the 8days flow or the daily flow obtained by various methods. These fluctuations may lead to differences in determining whether the target load is achieved. In this study, each LDC was prepared using the 8day flow and the related daily flow. Then, the effect using different flow data on the achievement of target load was compared according to flow conditions. As a result, the difference ratio in the number of overloads under flow condition was showed 19% in high flows, 42% in moist conditions, 49% in mid-range flows, 41% in dry conditions, and 104% in low flows. In the top ten watershed with the highest difference ratio, the flow became lower the difference ration increases. These differences can cause uncertainty in assessing the achievement of target load using LDC. Therefore, in order to evaluate the water quality accurately and reliably using LDC, accurate daily flow data and water quality data should be secured through the installation of national nonpoint measurement network.

• 디지털융복합연구
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• 제11권10호
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• pp.459-467
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• 2013

이 연구의 목적은 질병관리본부의 퇴원손상환자조사 자료를 이용하여 지역의 소득수준에 따른 의료이용의 차이를 규명하는 것이었다. 지역의 경제적 수준은 234개 시 군 구의 재정자립도를 지표로 하여 5분위로 구분하였다. 주요 결과로는 첫째, 소득수준이 낮을수록 연령표준화입원률과 표준화사망률이 증가하였다. 둘째, 16개 주요 질환 중 뇌혈관질환, 심장질환, 폐암, 위암이 소득수준에 따른 표준화사망률의 변화가 큰 것으로 나타났다. 셋째, 소득수준이 낮을수록 응급 경유 입원이 증가하였다. 넷째, 대부분의 주요 질환에서 소득수준이 낮을수록 평균재원일수가 증가하는 것으로 나타났다. 따라서, 지역별 건강 불평등의 격차를 줄이기 위해서는, 지역 및 소득수준별 특성에 맞는 지역보건의료정책이 수립되어야 할 것이다.

• 한국식품저장유통학회지
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• 제16권5호
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• pp.747-753
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• 2009

본 연구에서는 국내외 주요 포도 가공품인 포도즙과 포도주의 일반분석 및 대표적인 폴리페놀화합물인 레스베라트롤, 쿼세틴 및 카테킨에 대한 함량 분석을 실시하였다. 한국산 포도제품과 외국산과의 색도, pH, 산도, 에탄올 함량 등은 제품, 품종, 제조국가 간에 유의적인 차이가 있었다. 유리당 조성은 포도즙과 포도주 사이에 큰 차이를 보였으며, 포도주 내에서도 통계적으로 유의한 결과를 나타났다. 레스베라트롤과 쿼세틴 함량에서는 국내산 포도즙 사이에 유의적인 차이를 발견할 수 있었으며 포도주가 포도즙보다 대체로 높은 경향이었다. 에피카테킨 함량 및 조성에서도 제품, 품종, 제조국가 간에 유의적인 차이가 인정되었다. 이러한 결과는 향후 포도 육종가, 재배 농가나 판매자들에게 유용한 정보가 될 것으로 기대된다.

• 한국경제지리학회지
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• 제22권2호
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• pp.196-213
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• 2019

본 논문은 2018년 가계금융복지조사 원자료를 대상으로 기존 O-B(Oaxaca-Blinder) 요인분해를 일반화하고 정교화한 가중화 및 RIF(Recentered Influence Function) 회귀 기반의 2단계 O-B 요인분해 기법을 사용하여 순자산 불평등의 수도권과 비수도권 격차 요인들을 분석한다. 이는 소득, 연령, 교육, 가구유형 등과 같은 사회 경제적 요인들의 지역 간 분포 차이가 순자산 불평등의 지역 간 격차에 어떻게 기여했는지를 밝히는 것이다. 자료의 한계에도 불구하고, 분석 결과는 소득, 이혼, 농림어업과 기능조립직, 다문화가구 변수들의 지역 간 차이는 순자산 불평등의 수도권과 비수도권 간 격차를 심화시키지만, 상용직, 관리전문사무직, 서비스판매직, 가구규모 변수들은 그 격차를 완화시키고, 생애주기의 지역 간 차이는 상쇄적인 역할을 한다는 것을 보여준다.

• Journal of Microbiology and Biotechnology
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• 제31권12호
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• pp.1643-1655
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• 2021

Recent studies have reported dysbiosis of the microbiome in breast tissue collected from patients with breast cancer and the association between the microbiota and disease progression. However, the role of the microbiota in breast tissue remains unclear, possibly due to the complexity of breast cancer and various factors, including racial and geographical differences, influencing microbiota in breast tissue. Here, to determine the potential role of microbiota in breast tumor tissue, we analyzed 141 tissue samples based on three different tissue types (tumor, adjacent normal, and lymph node tissues) from the same patients with breast cancer in Korea. The microbiota was not simply distinguishable based on tissue types. However, the microbiota could be divided into two cluster types, even within the same tissue type, and the clinicopathologic factors were differently correlated in the two cluster types. Risk of regional recurrence was also significantly different between the microbiota cluster types (p = 0.014). In predicted function analysis, the pentose and glucuronate interconversions were significantly different between the cluster types (q < 0.001), and Enterococcus was the main genus contributing to these differences (q < 0.01). Results showed that the microbiota of breast tissue could interact with the host and influence the risk of regional recurrence. Although further studies would be recommended to validate our results, this study could expand our understanding on the breast tissue microbiota, and the results might be applied to develop novel prediction methods and treatments for patients with breast cancer.

• 대한지역사회영양학회지
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• 제29권3호
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• pp.173-188
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• 2024

Objectives: The study aim was to analyze the regional differences in dietary protein intake and protein sources of Korean older adults and their association with metabolic syndrome. Methods: Study participants were 1,721 older adults aged 65 and over who participated in 2016-2019 Korea National Health and Nutrition Examination Survey. Using 24-hour recall dietary intake data, protein intake and their food sources were examined. The association between protein intake and metabolic syndrome, obesity, and abdominal obesity were analyzed by multiple logistic regression. Results: Total protein and animal protein intakes were higher in urban area (60.0 g, 24.4 g, respectively) than in rural area (54.6 g, 19.6 g, respectively). With increase of protein intake level, animal to total protein proportion was increased in both areas. Total protein and plant protein intake was negatively associated with the risk of obesity, abdominal obesity in both areas. Animal protein intake was negatively associated with the risk of obesity in both areas, and with abdominal obesity only in urban area. In urban area, plant protein intake was also negatively associated with the risks of metabolic syndrome, elevated triglyceride, and reduced high density lipoprotein-cholesterol. In urban area, the risk of metabolic syndrome was decreased when their protein intake was more than 0.91 g/kg and was lowest when their protein intake was more than 1.5 g/kg (P for trend < 0.001). Conclusions: Korean older adults showed inadequate protein intake and those in rural area showed lower animal protein intake than in urban area. The risk of obesity and metabolic syndrome was decreased with the increase of protein intake level. These findings may help develop effective nutrition support strategy for older adults to reduce regional health disparity.

• Korean Journal of Radiology
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• 제22권6호
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• pp.880-889
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• 2021

Objective: This study aimed to investigate the regional amyloid burden and myocardial deformation using T1 mapping and strain values in patients with cardiac amyloidosis (CA) according to late gadolinium enhancement (LGE) patterns. Materials and Methods: Forty patients with CA were divided into 2 groups per LGE pattern, and 15 healthy subjects were enrolled. Global and regional native T1 and T2 mapping, extracellular volume (ECV), and cardiac magnetic resonance (CMR)-feature tracking strain values were compared in an intergroup and interregional manner. Results: Of the patients with CA, 32 had diffuse global LGE (group 2), and 8 had focal patchy or no LGE (group 1). Global native T1, T2, and ECV were significantly higher in groups 1 and 2 than in the control group (native T1: 1384.4 ms vs. 1466.8 ms vs. 1230.5 ms; T2: 53.8 ms vs. 54.2 ms vs. 48.9 ms; and ECV: 36.9% vs. 51.4% vs. 26.0%, respectively; all, p < 0.001). Basal ECV (53.7%) was significantly higher than the mid and apical ECVs (50.1% and 50.0%, respectively; p < 0.001) in group 2. Basal and mid peak radial strains (PRSs) and peak circumferential strains (PCSs) were significantly lower than the apical PRS and PCS, respectively (PRS, 15.6% vs. 16.7% vs. 26.9%; and PCS, -9.7% vs. -10.9% vs. -15.0%; all, p < 0.001). Basal ECV and basal strain (2-dimensional PRS) in group 2 showed a significant negative correlation (r = -0.623, p < 0.001). Group 1 showed no regional ECV differences (basal, 37.0%; mid, 35.9%; and apical, 38.3%; p = 0.184). Conclusion: Quantitative T1 mapping parameters such as native T1 and ECV may help diagnose early CA. ECV, in particular, can reflect regional differences in the amyloid deposition in patients with advanced CA, and increased basal ECV is related to decreased basal strain. Therefore, quantitative CMR parameters may help diagnose CA and determine its severity in patients with or without LGE.

• 한국농공학회논문집
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• 제57권5호
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• pp.61-67
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• 2015

Effect of tillage on time of initial runoff, runoff coefficient, NPS pollution load, soil erosion and crop productivity were studied. Eight runoff plots of $5{\times}30m$ on loamy sand field that were 4 respective plots of 3 % and 8% slope were prepared. Treatment included conventional tillage (CT) and no-till (NT). Time of initial runoff from NT retarded between 247~261 % compared with that from CT. Under 3% slope, runoff coefficient in NT was 63.5 % lower than that in CT. The reduction under 8 % slope was 61.7 %. Differences in runoff reduction between 3% and 8% plots were not significant. NT could reduce more than 60 % of NPS pollution and between 50~85 % of sediment if compared with CT. Productivity of NT was also shown that it was not lower than that of CT. It was expected that the results could be used as a fundamental data for estimating a reduction load in Korea TMDL from a no-till BMP on loamy sand agricultural fields.

• 한국수자원학회논문집
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• 제34권2호
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• pp.119-130
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• 2001

본 연구에서는 한강유역의 1일, 2일, 3일 연최대강우자료를 대상으로 L-모멘트법을 이용한 지점 빈도해석과 지역 빈도해석을 실시하여 그 결과를 비교하였다. 지역빈도해석을 실시하기 위하여 한강유역을 남한강, 북한강, 한강하류부 유역의 3개 소유역으로 분할하고, 각 유역에 대한 자료의 이산도 및 동질성을 검토하였으며, 각 소유역에 대하여 여러 분포형을 적용한 결과, 남한강유역과 한강하류부 유역은 lognormal 분포형, 북한강 유역은 gamma-3 분포형이 적정분포형으로 선정되었다. 지역빈도해석과 지점빈도해석을 통하여 선정된 확률분포형을 이용, Monte Carlo 모의를 수행하였으며, 재현기간에 따른 상대편의와 상대제곱근 오차를 산정하였다. 지역빈도해석과 지점빈도해석을 비교한 결과 상대제곱근오차에 있어서 지역빈도해석을 수행한 경우가 지점빈도해석에 비해 그 결과가 우수하였으며, 재현기간이 커질수록 그 차이는 현저하게 나타났다. 따라서, 한강유역의 강우량에 대해서 지역빈도해석 수행함이 지점빈도해석에 비해 우수하다는 결론을 얻게 되었다.

• 보건행정학회지
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• 제24권2호
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• pp.128-135
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• 2014

Background: With ageing and growing importance of disease management system, it is necessary to investigate the extent of regional difference in service utilization for chronic diseases among the elderly and to reflect it in designing the system. Methods: A multiple regression analysis and descriptive statistics analyses were employed using patient survey, which covers nationwide health facilities and their users. Results: While the differences in the rate of service utilization/utilization outside living area between urban and rural areas or between income levels are not large, considerable variations are observed within urban or rural areas and within income groups. Conclusion: This results suggest that it is important to subsidize economically disadvantaged segments of the population and residents of less-favored areas to be better-equipped for chronic disease management in order to prevent the development of severe ailments and the need for treatment at higher-level medical institutions. Improvements to the service infrastructure in vulnerable regions are essential.