• Journal of Microbiology
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• 제45권6호
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• pp.479-484
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• 2007

Bacterial communities at 10 cm, 100 cm, and 200 cm depths in a 100-year-old lead-zinc tailing heap were evaluated by constructing 16S rRNA gene libraries. In total, 98 operational taxonomic units (OTUs) were identified from 193 clones at a 3% sequence difference level. The OTU number and species richness decreased with the depth. Species composition was significantly different between the three libraries. Fifty-seven percent of the examined clones were Acidobacteria and 27% belonged to Proteobacteria. Other sequences included Chloroflexi, Firmicutes, Chlamydiae, Actinobacteria, Gemmatimonadetes, Nitrospira, and three unclassified OTUs. Alphaproteobacteria, Betaproteobacteria, Gammaproteobacteria, Firmicutes, and Actinobacteria were mainly distributed in the rhizosphere of naturally colonizing plants; however, Deltaproteobacteria, Acidobacteria, and Chloroflexi tended to inhabit the deeper tailings (below the 100 cm-depth).

• Computers and Concrete
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• 제19권1호
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• pp.87-98
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• 2017

In recent year, the coat layer drops and the rebar rust of bridge parapets, which caused the structural performance degradation. In order to achieve the comprehensive rehabilitation, ultra high performance cementitious composites is proposed to existing RC parapet rehabilitation. The influence factors of UHPCC rehabilitation includes two parts, i.e., internal factors related with material, such as UHPCC layer thickness, corrosion ratio of rebars, fiber volume fraction, and external factors related with the load, such as impact speeds, impact angles, vehicle mass. The influence of the factors was analyzed in this paper based on the nonlinear finite element. The analysis results of the maximum dynamic deformation and the peak impact load of parapets revealed the influence of the internal factors and the external factors on anti-collision performance and degree degradation. This research may provide a reference for the comprehensive multifunctional rehabilitation of existing bridge parapets.

• Journal of Microbiology and Biotechnology
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• 제19권9호
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• pp.898-903
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• 2009

Pullorum disease affecting poultry is caused by Salmonella enterica serovar Pullorum and results in severe economic loss every year, especially in countries with a developing poultry industry. The pathogenesis of S. Pullorum is not yet well defined, as the specific virulence factors still need to be identified. Thus, to isolate specific DNA fragments belonging to S. Pullorum, this study used suppression subtractive hybridization. As such, the genome of the S. Pullorum C79-13 strain was subtracted from the genome of Salmonella enterica serovar Gallinarum 9 and Salmonella enterica serovar Enteritidis CMCC(B) 50041, respectively, resulting in the identification of 20 subtracted fragments. A sequence homology analysis then revealed three types of fragment: phage sequences, plasmid sequences, and sequences with an unknown function. As a result, several important virulence-related genes encoding the IpaJ protein, colicin Y, tailspike protein, excisionase, and Rhs protein were identified that may play a role in the pathogenesis of S. Pullorum.

• 한국독성학회:학술대회논문집
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• 한국독성학회 2001년도 International Symposium on Dietary and Medicinal Antimutgens and Anticarcinogens
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• pp.203-204
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• 2001

Background and Aim: Transitional cell carcinoma (TCC) of the bladder represents the fifth most prevalent malignancy in Western population, with peak incidence found in males of the 50- to 70-year-old age group. A major problem in the management of bladder cancer is the low sensitivity of a large proportion (approximately 40%) among bladder tumors to chemotherapy and the high risk for recurrence of bladder tumors after transurethral resection.(omitted)

• 한국농공학회논문집
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• 제49권3호
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• pp.11-20
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• 2007

Estimation of crop consumptive use is a key term of agricultural water resource systems design and operation. The 10-year return period drought has special aspects as a reference period in design process of irrigation systems in terms of agricultural water demand analysis so that crop evapotranspiration (ETc) about the return period also has to be analyzed to assist understanding of crop water requirement of paddy rice. In this study, The ETc of 10-year return period drought was computed using frequency analysis by 54 meteorological stations. To find an optimal probability distribution, 8 types of probability distribution function were tested by three the goodness of fit tests including ${\chi}^2$(Chi-Square), K-S (Kolmogorov-Smirnov) and PPCC (Probability Plot Correlation Coefficient). Optimal probability distribution function was selected the 2-parameter Log-Normal (LN2) distribution function among 8 distribution functions. Using the two selected distribution functions, the ETc of 10-year return period drought was estimated for 54 meteorological stations and compared with prior study results suggested by other researchers.

• Asian-Australasian Journal of Animal Sciences
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• 제20권9호
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• pp.1342-1348
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• 2007

POU1F1 is a positive regulator for GH, PRL and TSH${\beta}$ and its mutations associate with production traits in ruminant animals. We described a DdeI PCR-RFLP method for detecting a silent allele in the goat POU1F1 gene: TCT (241Ser)>TCG (241Ser). Frequencies of $D_1$ allele varied from 0.600 to 1.000 in Chinese 801 goats. Significant associations of DdeI polymorphism with production traits were found in milk yield (*p<0.05), litter size (*p<0.05) and one-year-old weight (*p<0.05) between different genotypes. Individuals with genotype $D_1D_1$ had a superior performances when compared to those with genotype $D_1D_2$ (*p<0.05). Hence, the POU1F1 gene was suggested to the potential candidate gene for superior milk performance, reproduction trait and weight trait. Genotype $D_1D_1$, characterized by a DdeI PCR-RFLP detection, was recommended to geneticists and breeders as a molecular marker for better performance in the goat industry.

• 한국수산과학회지
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• 제23권6호
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• pp.443-450
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• 1990

The virtual population analysis technique was applied to the silver croaker, Otolithes argenteus, stock based on length frequency composition, age-length key and nominal catches taken by the trawl fleet and fixed-stake nets in the Kuwait's waters during $1981\~1988$. One-year-old fish was dominant, whereas three-year-old and older fish were at a very low level. Fishing mortality was much higher in the age groups of 2 and 3 than in the others. A strong year-class occurred in 1980 and 1981. Population size of fishable stock markedly decreased from 1982 to 1985 and remained at a low level during $1986\~1987$. The effects of changes in fishing effort showed that an increase in fishing effort would not lead to benefits in yield and would comprise more young and fewer old fish, whereas a reduction in fishing effort to a certain level (by $20\~40\%$ ) from the fishing effort level on the average during $1981\~1988$ could bring some small advantage to the fishery consisting of fewer young and older fish.

• 한국간호교육학회지
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• 제20권4호
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• pp.452-462
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• 2014

Purpose: This study explores the experience of university life in an unfamiliar department by first-year graduate students. Method: Data were collected from participants through focus group interviews between July and August 2013 using phenomenological research methods. Colsizzi's method was used for analysis after the institutional review board of the university approved the study and informed consent was obtained from the participants. All interviews were recorded on an MP3 recorder and transcribed. Results: The analysis revealed 51 meanings that were categorized by 15 key words into 6 themes: "sense of isolation," "feeling of solidarity," "limitations," "benefits," "overcoming" and "renewing." Conclusion: First-year graduate students experience both positive and negative feelings toward "university life"; however, they eventually overcome their difficulties and adapt to the conditions of their field of study and new department.

• 한국기후변화학회지
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• 제6권4호
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• pp.367-377
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• 2015

This study analyzed the effectiveness of China's policy to reduce of sulfur dioxide. China's $12^{th}$ Five-year plan on national economic and social development emphasized environmental protection and low-carbon economic development. Sulfur dioxide was one of the major gases to affect air pollution and climate change and its control became a key policy agenda in the environment and energy sector. As the absolute amount of sulfur dioxide emissions in China came from the industrial sector, the control of the coal-based energy was especially urgent. This study analyzed the factors that influenced the sulfur dioxide emissions and the policy effects to reduce sulfur dioxide in China from 2003 to 2012 based on regional data. The air pollution treatment investments showed the biggest impact together with energy conservation policy in reducing sulfur dioxide emissions. However, pollutant emissions charge did not show a relevant policy effectiveness in all regions as the amount of charge would be smaller than economic benefit from non-compliance. Rationalizing pollutant emissions charge is, therefore, a key policy task for further reduction of sulfur dioxide emissions.

• 고령자･치매작업치료학회지
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• 제12권2호
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• pp.67-74
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• 2018

목적 본 연구의 목적은 텍스트 마이닝이라는 빅데이터 분석 기법 중 하나를 활용하여 노인장기요양보험에서 작업치료의 역할을 정량적으로 분석하는 것이다. 연구방법 신문기사 분석을 위해 2007~208년까지 기간 설정 후 "노인장기요양보험+작업치료"를 주제어로 수집하였다. Textom이라는 웹 크롤링(Web Crawling)을 활용해 국내 검색엔진 네이버에서 <네이버뉴스>의 데이터베이스를 활용하였다. 수집결과 노인장기요양보험+작업치료 검색에서 510편의 뉴스 데이터의 기사제목과 원문을 수집한 후 연도별 기사 빈도, 핵심어분석을 시행하였다. 연구결과 연도별 기사 발행 빈도를 살펴보면 2015년과 2017년 발행한 기사 수가 70편(13.7%)으로 가장 많았고, 핵심어 분석 상위 10개의 용어는 '치매'(344)가 가장 많았으며, 작업과 핵심어의 관례를 알아보면, 치매, 치료, 병원, 건강, 서비스, 재활, 시설, 제도, 등급, 어르신, 전문, 급여, 공단, 국민이 관련이 있는 것으로 나타났다. 결론 본 연구에서는 텍스트 마이닝 기법을 통해 11년간의 노인장기요양보험의 언론 보도 동향을 토대로 관련 핵심 키워드에서 치매와 재활에 대해 사회적 요구와 작업치료사의 역할을 보다 객관적으로 확인하였다는 점에서 의의가 있다. 이 결과를 바탕으로 다음 연구에서는 연도에 따른 다양한 분석방법을 통해 연구방법론을 보완하여야 할 것이다.