• Journal of applied mathematics & informatics
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• 제18권1_2호
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• pp.339-350
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• 2005

A space-time fractional advection-dispersion equation (ADE) is a generalization of the classical ADE in which the first-order time derivative is replaced with Caputo derivative of order $\alpha{\in}(0,1]$, and the second-order space derivative is replaced with a Riesz-Feller derivative of order $\beta{\in}0,2]$. We derive the solution of its Cauchy problem in terms of the Green functions and the representations of the Green function by applying its Fourier-Laplace transforms. The Green function also can be interpreted as a spatial probability density function (pdf) evolving in time. We do the same on another kind of space-time fractional advection-dispersion equation whose space and time derivatives both replacing with Caputo derivatives.

• 한국포장학회지
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• 제14권1호
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• pp.31-33
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• 2008

The effects of packaging conditions on freshness extension of green pepper were investigated during 30days of storage at $10^{\circ}C$ and $18^{\circ}C$ Corrugated cardboard and EPS box used as packaging materials. The rate of weigh loss, vitamin C and chlorophyll contents, and hunter color of green paper were changed last significantly in the samples stored in the EPS box at low temperature storage condition($10^{\circ}C$) among treatments. The combination of EPS box and low temperature was the most effective treatment to extend the storability of green pepper.

• Food Science and Biotechnology
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• 제14권1호
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• pp.46-48
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• 2005

Growth inhibitory effects of ethanol extracts of green tea and pine needles on Bacillus stearothermophilus isolated from spoiled red bean paste were detected at concentrations higher than 750 ppm, and antimicrobial activity of pine needle extract was slightly higher than that of green tea exract. Growth inhibitory effect of pine needle extract in nutrient broth adjusted to pH 6.0, water-activity 0.92, and $45\;^{\circ}$Brix was observed at 500 ppm. These results indicated growth of B. stearothermophilus could be inhibited by adding pine needle and green tea extracts.

• 한국의류학회지
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• 제23권2호
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• pp.296-306
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• 1999

This study reflects the aim of analyzing the fashion design connection with ecology. Ecology has been linked to human life through its changing relations with environment. In order to recover eco-system ecology-nature oriented methodology and technology oriented approach will suffice. On the modern design field Green design Recycling and Green marketing resulted in increasing rates of environment-friendly production and an effort to deliver environment-friendly corporate image. Based on above research ecological image on fashion design during the year 1990 to 1995 represents the following conclusion. In the fashion design field natural image primitive image nature -harmonious image material-recyling image culture-recycling image are proposed. In the technology field clean image and high-tech image are proposed. In the marketing field happy image harmonious image serious image and realistic image are proposed.

• 정보학연구
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• 제8권3호
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• pp.51-56
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• 2005

In this paper, we describe a study on the relationship between spectral sensitization and photographic characteristics of color paper. The photographic emulsion used in this study is a green-sensitizing emulsion. U.V maximum absorption peak value of 9-phenyl-5,5'-diphenyl-3,3'-bis(3-sulfopropyl)benzoxazolo carbocyanine triethyl ammonium salt was observed 507nm, and wedge spectrograms maximum peak value of color paper added dye to photographic emulsion was shown 553nm. As compared with the absorption peak of the dye in methanol solution, the sensitizing peaks of 9-phenyl-5,5'-diphenyl-3,3'-bis(3-sulfopropyl)benzoxazolo carbocyanine triethyl ammonium salt have red shifts of 46nm. The photographic characteristics of green-sensitizing emulsion were obtained contrast(2.6), speed(48-57), fog(0.08). Therefore, benzoxazolo carbocyanine dye is of industrial importance as green-sensitizing dye in the spectral sensitization of photographic emulsion.

• 경영정보학연구
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• 제11권2호
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• pp.147-167
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• 2009

그린 IT는 IT 기반의 친환경 기술을 포괄하는 개념으로서 넓은 범위에서는 유해물질 대체, 에너지 효율화, 대체에너지 등 친환경적 기술을 의미한다. 현재 IT 산업의 흐름은 서버발열 및 데이터센터 에너지 절감 방안 등에 초점을 맞추어 그린 IT를 정의하고 있다. 본 연구는 문헌조사를 통해 그린 IT의 개념을 정의하고, 그린 IT가 나타난 배경과 필요성을 통해 현재 IT시장에 새롭게 등장한 그린 IT의 이슈 및 각 나라별 전략 및 국내의 전략을 비교분석하였다. 이를 구체적으로 살펴보면, 최근 IT 및 데이터센터 시장 전반 향후 변화 및 흐름을 볼 때 그런 IT는 그런 데이터센터 도입에 초점을 맞추어 사업의 방향과 전략을 수립하고 있는 것으로 나타났다. 따라서 본 연구는 국내외 기업의 그린 데이터센터 도입을 통한 그린 IT 구축 사례를 통해서 그린 IT 도입기준과 필요조건, 환경평가 및 설계 그리고 구체적인 추진전략과 향후 과제를 제시하였다.

• 한국분말재료학회지
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• 제25권3호
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• pp.251-256
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• 2018

We report the feasibility of TaC production via self-propagating high temperature synthesis, and the influence of the initial green compact density on the final composite particle size. Experiments are carried out from a minimum pressure of 0.3 MPa, the pressure at which the initial green body becomes self-standing, up to 3 MPa, the point at which no further combustion occurs. The green density of the pellets varies from 29.99% to 42.97%, as compared with the theoretical density. The increase in green density decreases the powder size of TaC, and the smallest particle size is observed with 1.5 MPa, at $10.36{\mu}m$. Phase analysis results confirm the presence of the TaC phase only. In the range of 0.3-0.5 MPa, traces of unreacted Ta and C residues are detected. However, results also show the presence of only C residue in the matrix within the pressure range of 0.6-3.0 MPa.

• 펄프종이기술
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• 제46권4호
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• pp.28-36
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• 2014

We studied the green synthesis and antibacterial activity of paper coated with chitosan-silver (Ag) green nanocomposites for packaging applications. Green synthesis of Ag nanoparticles (AgNPs) was achieved by a chemical reaction involving a mixture of chitosan-silver nitrate ($AgNO_3$) in an autoclave at 15 psi, $121^{\circ}C$, for 30 min. AgNPs and their formation in chitosan was confirmed by UV-Vis spectroscopy, transmission electron microscopy (TEM) and dynamic light scattering (DLS). As-prepared chitosan-AgNPs composite materials were coated on manila paper using Meyer rod. Surface morphology and Ag contents in coating layer were characterized by field emission scanning electron microscopy (FESEM) and energy dispersive spectroscopy (EDS). The mechanical properties such as tensile strength and elongation were significantly affected by coating with chitosan-AgNPs. The antibacterial test of coated paper was performed qualitatively and quantitatively against Escherichia coli (E. coli). It was shown to be effective in suppressing the growth of E. coli with increasing Ag contents on the surface of coated paper and more than 95 R (%) of antimicrobial rate was obtained at chitosan-AgNPs coated papers.

• 한국균학회지
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• 제27권6호
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• pp.412-414
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• 1999

최근 국내 큰느타리버섯 재배농가가 증가하면서 병해의 발생이 문제점으로 나타나고 있다. 본 연구에서는 큰느타리 버섯의 자실체에 발생하는 푸른곰팡이 병반으로부터 Penicillium sp.균을 분리하여 동정하였고 생리적 특성을 조사하였다. 분리된 Penicillium sp.균의 형태적 특성을 조사한 결과, 분생포자는 타원형이고 크기는 $2.3{\sim}3.4{\times}2.6{\sim}3.2\;{\mu}m$였다. 분생자병은 균사로부터 one-stage branch 모양을 형성하고, metulae는 $2{\sim}4$개로 크기가 $10{\sim}l8{\times}2.5{\sim}3.0\;{\mu}m$이며, phialides는 플라스크상이고 크기가 $9{\sim}13{\times}2.2{\sim}2.8\;{\mu}m$였다. Czapek 배지에서 배양할 경우 $25^{\circ}C$에서 7일에 균총이 21 mm 성장했으며, 균총의 색은 회녹색이었다. 이상과 같은 형태 및 배양적 특징으로 공시균을 Penicillium corylophilum로 동정하였고 이균을 상처접종하였던바 $6{\sim}7$일만에 재배농가에서와 동일한 증상을 나타내었다.

• Asian Pacific Journal of Cancer Prevention
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• 제15권23호
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• pp.10387-10391
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• 2015

Background: This study aimed to identify any association between the p73 gene G4C14-to-A4T14 polymorphism and risk of non-small cell lung cancer (NSCLC) in the south of China. Materials and Methods: We genotyped the p73 gene polymorphism of peripheral blood DNA from 168 patients with NSCLC and 195 normal controls using HRM (high resolution melting) and PCR-CTPP (polymerase chain reaction with confronting two-pair primers). Results: The results of genotyping by HRM and PCR-CTPP were consistent with direct sequencing, the p73 genotype distribution in 168 lung cancer patients being as follows: GC/GC 101 cases (60.1%), GC/AT 59 cases (35.1%), AT/AT 8 cases (4.8%). The carriers of AT/AT genotype had a significantly reduced risk of NSCLC (OR=0.370; 95%CI: 0.170-0.806; p=0.010) as compared with non-carriers. However, we found no relations between p73 genotypes and histological type (p=0.798, $x^2=0.452$), tumor stage (p=0.806, $x^2=0.806$), or lymph node metastasis (p=0.578, $x^2=1.098$). Conclusions: Our findings suggest that the p73 G4C14-to-A4T14 polymorphism may be a modifier of NSCLC susceptibility in the Chinese population.