• Korean Journal of Ecology and Environment
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• v.55 no.1
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• pp.19-34
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• 2022

This study was identified the distribution of vegetation in domestic estuaries and analysed the relationship with environmental fcators based on the health assessment data of the estuary ecosystem surveyed between 2016 and 2018. Of the 325 estuaries surveyed, 187 vegetation communites were investigated in 300 estuaries and 53 halophyte communites accounted for 28.3%. No vegetation distribution was found in the other 25 estuaries. Considering the circulation of estuary, 41 halophyte communites were investigated in open estuaries and 26 halophyte communites in closed estuaries. As a result of canonical correlation analysis (CCA) between the entire distributed vegetation community and environmental factors, salinity (conductivity), T-N, and T-P concentrations were strongly correlated. Among the riverbed material materials of the estuary, the composition ratio of silt, sand, and pebble was the most correlated. Therefor, it is estimated that the distribution location of the halophyte communites were differentiated by being influenced by the sea ares, estuary circulation type, resistance to salinity and riverbed material ratio.

• Journal of Veterinary Clinics
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• v.24 no.1
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• pp.5-9
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• 2007

The purpose of this study was to examine the allometric analysis of roxithromycin using pharmacokinetic data. The pharmacokinetic parameters used were $half-life(t_{1/2})$, mean residence time (MRT), clearance (Cl) and volume of distribution at steady state $(V_{ss})$. Relationships between body weight and the pharmacokinetic parameter were based on the empirical formula $Y=aW^b$, where 'Y' is $t_{1/2}$, MRT, Cl, or $V_{ss}$, W the body weight and 'a' is an allometric coefficient (intercept) that is constant for a given drug. The exponential term, 'b', is a proportionality constant that describes the relationship between the pharmacokinetic parameter of interest and body weight. As results of the allometric analyses, the logarithms of $t_{1/2}$, MRT, Cl, and $V_{ss}$ were linearly related to the logarithms of body weight. Results of the current analyses could provide information on appropriate doses of roxithromycin for all species.

• Journal of the Korean Data and Information Science Society
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• v.27 no.5
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• pp.1155-1168
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• 2016

This paper considers a probability density estimation problem of climate values. In particular, we focus on estimating probability densities of summer extreme temperature over South Korea. It is known that the probability density of climate values at one location is similar to those at near by locations and one doesn't follow well known parametric distributions. To accommodate these properties, we use a mixture of conditional autoregressive species sampling model, which is a nonparametric Bayesian model with a spatial dependency. We apply the model to a dataset consisting of summer maximum temperature and minimum temperature over South Korea. The dataset is obtained from University of East Anglia.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.28 no.4
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• pp.462-468
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• 1983

Collected 38 colored soybeans, which was cultivated under the conventional field conditions, were investigated about their organeloptic parameters and correlations among factors such as organeloptic score, texturometer parameters and chemical components of seeds. Most of the organeloptic parameters were affect much more by the characteristics of each cultivars than by grain weight, and then showed significant differences with the effect of interactinon between grain weight and cultivar, too. Also among contribution degrees of texturometer scores to overall acceptance, cohesiveness was higher in small, medium and super grains, however in large grains, hardness. And among sensory attributes, suitable toughness was contribute most positively to acceptance.

• Proceedings of the Korea Water Resources Association Conference
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• 2011.05a
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• pp.404-404
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• 2011

최근 기상변동성 증가와 극치수문사상의 발생빈도 증가로 인한 기상재해가 빈번하게 일어나고 있다. 이러한 기상현상으로 인한 재해의 예방을 위해서 사전에 위험을 인지하고 그 규모를 예측할 수 있는 여러 기법들이 기상레이더 또는 수치예보자료 등을 이용하여 개발 및 적용되고 있다. 이 과정에서 해결해야 할 여러 문제점들이 있는데, 우선 수치예보자료 또는 기상레이더자료를 종관기상관측소 및 자동기상관측지점의 지상관측 강수량과 연계하여 평가하는 과정이 필요하고, 현재시점에 형성되어 있는 강우장의 공간 이동 예측 기법이 확보되어야 할 것이다. 전북지역은 게릴라성 집중호우가 빈번한 산악형 강수와 산지유역의 급한 하천경사가 맞물려 인명 및 재산피해가 매년 발생하고 있으며, 과거 돌발홍수가 발생한 사례가 있어 이상기후 및 기후변화로 인한 홍수 위험도가 커질 것으로 전망되고 있다. 본 연구는 전라북도의 기상재해 예측모형 개발을 위한 사전 분석과정으로 전라북도지역에서 관측된 기존의 대규모 강수사상을 이용한 강수사상의 특성 분류 및 관측소간 공간상관성을 분석하는데 목적을 두고 있다. 강수사상의 특성분류를 통해 강수 발생형태에 따른 기상학적 영향인자, 강수의 발생량 및 이동특성 예측의 정도를 향상시킬 수 있으며, 분류 기법으로 SVM(support vector machine)을 이용한 자동분류를 적용한다. 또한 관측소간 공간상관성 분석을 위하여 각 관측소 강수량간의 조건부 확률을 이용한다. 예로써 부안관측소에 강수가 발 생했을 때, 부안관측소의 강수량 조건에 의한 전주관측소 강수량 확률을 다음과 같이 구성할 수 있다. �揚滑斂�수량�咀刮활�수량��. 공간상관성 분석과정에서 관측소간 강수 이동시간에 따른 강수 발생 시간의 차이 또한 고려하며, 과거 기상관측 자료의 분석을 통해 전라북도지역의 관측소간 강수발생의 공간적 상관성을 규명하고, 단기예측 모델 개발을 위한 기초자료로 활용할 수 있을 것이다. 또한, 기후변화시나리오에 의한 미래 강수량의 지역적 상세화 과정에도 본 연구를 통한 결과를 이용할 수 있을 것이라 판단된다.

• Journal of the Korean Society of Food Science and Nutrition
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• v.43 no.1
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• pp.102-109
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• 2014

Crab-like flavoring base (CFB) was made from a concentrated snow crab cooker effluent (SCCE) containing five food additives (proline, glycine, arginine, methionine, fructose) using reaction flavor technology (RFT). The volatile flavor compounds in CFB were compared between raw (SCCE) and control (without food additives) samples using solid phase microextraction (SPME) and gas chromatography with mass selective detector. A total of 74 compounds were detected in all samples (30 raw samples, 34 control samples, 55 CFB samples). A total of 22 nitrogen-containing compounds, including 19 pyrazines and 3 pyridines, were formed through RFT and increased 27 times compared to the control. Dimethyl trisulfide and dimethyl disulfide were predominant sulfur-containing compounds that increased through RFT, while aromatic compounds decreased through RFT. Seven compounds, tetramethylpyrazine, 2-ethyl-3,5,6-trimethylpyrazine, 2,3,5-trimethyl-6-(3-methylbutyl)pyrazine, 2-ethyl-3,5-dimethylpyrazine, 2,5-dimethyl-3-(3-methylbutyl)pyrazine, 2-ethyl-3,6-dimethylpyrazine, and 2-decanone potentially have a role in CFB odor by Pearson's correlation analysis.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2019.04a
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• pp.66-66
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• 2019

본 연구조사의 대상지인 백두대간은 시점인 백두산에서 종점인 지리산까지 이어지는 한반도 전체를 관통하는 핵심 생태축이며, 남북한을 이어주는 산맥으로 인정되고 있다. 그 중 속리산 권역내 늘재하늘재(56.3km) 구간을 2018년 4월에서 10월까지 계절별로 식물의 고도별 수직분포, 식물상을 조사하여 한반도 식물의 기초 자료를 조사하고자 한다. 조사구간의 고도는 최저 310m에서 최고1,052m(평균 726m)로 전형적인 온대낙엽활엽수-침엽수 혼효림으로 구분된다. 주요 조사지인 300m1100m 고도에서 발견된 식물은 85과 227속 358종 4아종 37변종 5품종 총 404종이 출현하였으며 이중 한국특산식물은 노각나무, 자란초, 처녀치마 등 15과 19속 19종 2변종 총 21분류군, 희귀식물은 개병풍, 모데미풀 등 12과 19속 22종 총 22분류군, 기후변화 취약식물은 특산식물 9종, 남방계 1종, 북방계 16종으로 15과 20속 25종 총 25분류군으로 북방계 식물이 대다수 등장하였다. 고도별 분포를 보면 접속구간 300m 제외한 400m 107종, 500m 306종, 600m 137종, 700m 209종, 800m 190종, 900m 92종으로 종수-고도간 유의관계는 낮았으나, 생활형으로 구분한 목본(MM, M, N) 및 초본(CH, HH, H, G, Th, E)간 종의 구성비에서는 유의한 상관관계를 보였다. 400m에서 목본의 구성비는 40%였으나 고도에 따라 증가해 900m에서는 61%에 달했으며, 초본의 구성비는 60%에서 40%로 낮아졌다. 해당 구간의 이러한 경향을 봤을 때 마루금의 평균 해발고도 중심으로 식물이 주로 발견된 경향이 있으나 구성비의 변화를 봤을 때 700m를 중심으로 변화가 일어나고 있었으며 이는 각 정상부, 접속부의 물리적 환경의 차이로 이해된다.

• Analytical Science and Technology
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• v.25 no.6
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• pp.370-374
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• 2012

As for quality evaluation of paper records, it is very important to measure acidity and moisture in paper. In the case important paper records, it should be measured directly in field. But ISO standard analytical method would be limited to measure directly in field for quality evaluation of paper records until now. Therefore it could be to use mobile small NIR spectrometer for being analyzed by direct and non-invasive method in field. The wavelength range of small spectrometer has from 900 to 1700 nm, and the surface of paper could be measured by diffused reflected optical fiber probe. Thus, the acidity and moisture could be analyzed on the paper record with from 1970 to 2003. As the result, it could be confirmed to have each more than 0.9 as the correlation of acidity and moisture. Thus, it will be possible to develope the evaluation system of paper record with mobile small NIR spectrometer and optical fiber by the result.

• Journal of Wetlands Research
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• v.9 no.3
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• pp.13-24
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• 2007

This study was conducted to confirm if spatial distribution of macrobenthic fauna were related with sedimentary characteristics. Sedimentary characteristics were compared in each community after carrying of community analysis based upon species composition. Macrobenthic animals were distinguished with 4 communities based on the tidal level, of which 3 communities were divided into two groups on the sediment composition. Common species which were presented in all communities, Nephtys californiensis Hartman 1938, Haploscoloplos elongatus Johnson 1901, Glycera sp., Heteromastus sp. Notomastus sp. Timarete amtarctica Mono 1930, Glysinde sp., Lumbrineris japonica Marenzeller 1879 were having different appearance densities at each community area caused by different sedimentary characteristics. But only two species among the common species have a correlation significantly. Temporal variation of common species could not be recognised because of 4 times of seasonal investigation was not enough know their life cycles. So, in the future more frequently sampling method should be required.

• Journal of the Korean Orthopaedic Association
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• v.54 no.6
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• pp.562-566
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• 2019

Osteochondroma is a common benign bone tumor, but relatively rare in the spine. Spinal osteochondroma originates mainly from the posterior column and sometimes invades the spinal canal causing cord compression and myelopathy. A 36-year-old man was admitted to the authors' institution with a two-year history of neck pain. A radiology examination revealed osteochondroma, arising from the left superior articular process of the T1 vertebra with significant central canal narrowing. Most cases of the spinal osteochondroma originate in the cervical vertebra, but there are few reports of an origin of the cervicothoracic junction. This paper reports a case of osteochondroma at the cervicothoracic junction with a review of the relevant literature.