• 한국사회정책
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• 제25권3호
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• pp.247-278
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• 2018

한국사회복지는 최근 급증하고 있는 국내 체류 외국인근로자를 위한 서비스 전달정책과 실천에 그 관심의 폭을 확대하고 있다. 사회복지실천은 외국인 근로자들을 지원하는 현장 실천가들의 문화적 역량강화에 역점을 두고 연구와 실천을 수행해왔다. '문화적 역량강화를 위한 실천론'은 외국인이주자들이 한국사회에 순응하고 적응을 돕는 실천론으로서의 강점이 있다. 그러나 문화 역량강화는 그들이 당하는 차별과 그들을 억압하는 한국문화와 제도 등의 문제점을 인식하고 이의 변화를 모색하기에는 한계가 있다. 본 연구는 영국에서 사회복지실천개혁의 배경으로 발전된 사회구조 변화를 통해서 사회정의와 인권 가치를 실현하는 반-억압실천론(anti-oppressive practice)의 한국 외국인근로자를 위한 적용가능성을 살펴보고자 한다. 외국인 근로자와 그들을 지원하는 사회복지실천가들의 인터뷰를 기초로 외국인근로자들이 경험하는 차별의 유형과 사회복지실천가들의 실천방법을 분석하고 반-억압실천론(anti-oppressive practice)이 외국인근로자에게 적용 가능한가에 대한 의견을 제안한다.

• 융합보안논문지
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• 제23권2호
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• pp.75-84
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• 2023

최근 러시아-우크라이나 전쟁, 북한의 대남 정찰, 육군 Army Tiger 4.0의 드론봇체계 등 군사용 목적으로 드론의 활용도가 증가하고 있기 때문에 각 국에서는 이에 따른 안티드론 기술이 많이 발전하고 있다. 하지만 재래식 무기 또는 전자전 무기를 활용하는 형태의 전통적인 안티드론 기술들은 비용이 비싸다는 단점이 있어 현재는 저비용으로 수행할 수 있는 안티드론 기술도 새롭게 연구되고 있다. 따라서 이러한 안티드론 기술에 대응하여 아군의 생존성을 높이기 위한 노력도 많이 하고 있다. 이러한 흐름에 발맞추어 본 연구에서는 다양한 안티드론 기술들 중 비용이 비싼 재래식 무기 또는 전자전 무기를 활용한 기술이 아닌 저비용으로 수행할 수 있는 사이버영역과 전자전영역 기술이 적용된 가상의 대 드론 체계를 가정하고 이에 대응하여 아군 드론의 생존성을 높일 수있는 방안에 대해 제시하고자 한다.

• 한국식품영양학회지
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• 제24권4호
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• pp.496-500
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• 2011

The purpose of this investigation was to evaluate anti-tumor activity and detect what compounds affect its activity form $Alpinia$ $officinarum$ Hance. Two fractions, methanol and ethylacetate, were isolated by Amberlite XAD-2 resin column chromatography from methanol extract of the rhizomes of $Alpinia$ $officinarum$. In hollow fiber assay, the methanol extract and methanol fraction were found to inhibit the tumor growth against colon tumor cell lines such as Colo-320, HCT116 and WiDr. Three diarylheptanoids [5-hydroxy-1,7-diphenyl-3-heptanone, 5-hydroxy-7-(4"-hydroxy-3"-methoxyphenyl)-1-phenyl-3-heptanone and 3,5-dihydroxy-1,7-diphenylheptane] and two flavonoids [galangin and kaempheride] were isolated and identified from the methanol fraction, which is higher activity than ethylacetate fraction. Among these diarylheptanoids and flavonoids, 3,5-dihydroxy-1,7-diphenylheptane, galangin and kaempheride as active components on anti-tumor activity were mainly posited in methanol fraction.

• 한국해양공학회지
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• 제22권4호
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• pp.84-89
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• 2008

It is hard to find experimental data for a model test of small high-speed planning boats. It is difficult to verify the performance seen in a model test for a high-speed boat because the ship-model scale-ratio is very small and the flow velocity of the circulating water channel and the X-carriage speed of the towing tank are restricted. Therefore most hull-form designs for high-speed small boats depend on the sea-trial test result for similar boats or evaluation through numerical calculations. This study investigated the anti-rolling effect of the stern sub-body in a 50-knot doss planning boat. To carry out this work, new model test procedures were set up in the actual sea. Using this method, the anti-rolling effect of the stern sub-body was investigated. A stern sub-body attached to a planning boat was proved to be effective in reducing the roll and pitch angle.

• Food Science and Biotechnology
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• 제16권4호
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• pp.641-645
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• 2007

Delphinidin, an aglycone form of anthocyanins, was demonstrated to have anti-carcinogenic potential. The compound at $50\;{\mu}g/mL$ caused a significant increase of quinone reductase activity, an anti-carcinogenic marker enzyme, in mouse hepatoma cell lines (Hepa1c1c7 and BPRc1). Delphinidin enhanced the expression of other detoxifying or antioxidant enzymes including glutathione s-transferase, gamma-glutamylcysteine synthetase, heme oxygenase 1, and glutathione reductase. It suppressed the proliferation of murine hepatoma cells in a dose-dependent manner, with approximately $IC_{50}$ of $70\;{\mu}g/mL$. These results suggest that delphinidin might be useful for cancer prevention.

• 전력전자학회논문지
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• 제15권3호
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• pp.179-187
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• 2010

본 논문에서는 무효전력변동기법을 사용하여 단독운전을 검출을 하기 위해서 선행되어야 하는 주파수 검출 방법 중에서 개선된 이산푸리에변환(Discrete Fourier Transform; DFT), 즉 Goertzel 알고리즘을 이용한 단독운전 검출기법을 제안한다. 실제 태양광 발전 시스템의 설치를 위해서는 전기사고나 시스템에 악영향을 유발하는 단독운전 검출기법의 연구가 선행되어야 한다. 적용하는 주파수 검출방법은 Goertzel 알고리즘을 이용한 기법으로 기존의 영점검출기법과 가상의 2상 PLL(Phase Locked Loop)에 비하여 외란의 영향에 강인하며 빠른 검출이 가능하다. 시뮬레이션 및 실험을 통하여 기존의 주파수검출기법인 영점검출기법과 가상의 2상 PLL을 이용한 주파수 검출과 제안하는 알고리즘을 비교하고 그의 우수성을 검증하였다.

• BMB Reports
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• 제47권3호
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• pp.130-134
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• 2014

The combination of a high-affinity antibody to a hapten, and hapten-conjugated compounds, can provide an alternative to the direct chemical cross-linking of the antibody and compounds. An optimal hapten for in vitro use is one that is absent in biological systems. For in vivo applications, additional characteristics such as pharmacological safety and physiological inertness would be beneficial. Additionally, methods for cross-linking the hapten to various chemical compounds should be available. Cotinine, a major metabolite of nicotine, is considered advantageous in these aspects. A high-affinity anti-cotinine recombinant antibody has recently become available, and can be converted into various formats, including a bispecific antibody. The bispecific anti-cotinine antibody was successfully applied to immunoblot, enzyme immunoassay, immunoaffinity purification, and pre-targeted in vivo radioimmunoimaging. The anti-cotinine IgG molecule could be complexed with aptamers to form a novel affinity unit, and extended the in vivo half-life of aptamers, opening up the possibility of applying the same strategy to therapeutic peptides and chemical compounds.

• Journal of Microbiology and Biotechnology
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• 제16권10호
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• pp.1597-1604
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• 2006

To screen for an anti-yeast substance (AYS), many bacteria were isolated from soil and a strain AY2000 was selected. The strain AY2000 was identified as Rahnella aquatilis by morphology, biochemical properties, and 16S r-RNA nucleotide sequence analyses. The strain AY2000 showed anti-yeast activity against Candida albicans and Saccharomyces cerevisiae, whereas R. aquatilis ATCC33071 as a type strain did not show the activity against the yeasts under the same condition. The growth of yeast cell was significantly inhibited by AYS produced by the strain AY2000, as shown by optical density and MTT assay. The minimum inhibitory concentration (MIC) of the AYS against S. cerevisiae and C. albicans at $28^{\circ}C\;was\;20{\mu}g/ml\;and\;60{\mu}g/ml$, respectively. The MIC of AYS against hyphae of C. albicans at $37^{\circ}C\;was\;600{\mu}g/ml$. Scanning electron microscopic analysis revealed that yeast cells treated with AYS had an irregular form with a wrinkled and rough surface.

• Advances in materials Research
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• 제7권2호
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• pp.119-136
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• 2018

In this paper, static and vibration analysis for anti-symmetric cross-ply and angle- ply carbon/glass hybrid laminates rectangular composite plate are presented. In this analysis, the equations of motion for simply supported thick laminated hybrid rectangular plates are derived and obtained through the use of Hamilton's principle. The closed-form solutions of anti-symmetric cross-ply and angle- ply laminates are obtained using Navier solution. The effects of side-to-thickness ratio, aspect ratio, and lamination schemes on the fundamental frequencies loads are investigated. The study concludes that shear deformation laminate theories accurately predict the behavior of composite laminates, whereas the classical laminate theory over predicts natural frequencies. The excellent accuracy of the present analytical solution is confirmed by making some comparisons of the present results with those available in the literature. It can be concluded that the proposed theory is accurate and simple in solving the free vibration behaviors of anti-symmetric cross-ply and angle- ply hybrid laminated composite plates.

• Archives of Pharmacal Research
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• 제25권6호
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• pp.954-963
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• 2002

Lectin-conjugated praecoxin A is a compound, which is combined Wheat Germ Agglutinin (WGA) Lectin with praecoxin A and also known to have an anti-tumor activity. In our lab, in order to investigate its immune reaction other than the anti-tumor activity ever known, we examined cytokines such as IL-6 and IL-12 through their mRNA expressions, which are generally secreted by macrophage both in vivo and in vitro. To analyze, we used RT-PCR for total RNAs of macrophages. As a result, we obtained that both in vitro and in vivo, lectin-conjugated praecoxin A showed an interesting increase on IL-6 and IL-12 even though it may be little hard to say the conjugated form is absolutely more effective than that of lectin or praecoxin A alone for immune response activities. Those results suggest that the conjugated form may give an additional opportunity in a future therapeutic use over its immuno activation properties.