• 한국사회정책
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• v.25 no.3
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• pp.247-278
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• 2018

Anti-oppressive practice (AOP) is a form of social work practice that has developed in the UK. In South Korea, Anti-oppressive social work has not been widely studied / explored unlike in other countries in the world. Its main principles, social justice and human rights, have become commonplace. AOP includes transformational practice because its orientation emphasizes social change through celebrating diverse identities and rejecting hierarchies of oppression and prestige. Recently, a growing body of literature on social work with foreign workers has resulted in an increased understanding of its population and its needs. It needs a theoretical and practical framework for foreign workers necessary to inform effective models of service delivery, reflecting cultural competence, and changing oppressive social structure. In this paper, we will introduce the main principles of AOP, analyse written texts reflected by foreign workers and social work practitioners' opinion, and suggest the implications on possibilities and constraints of applicability to foreign workers in South Korea.

• Convergence Security Journal
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• v.23 no.2
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• pp.75-84
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• 2023

Recently, as the use of drones for military purposes is increasing, such as the Russia-Ukraine War, North Korea's reconnaissance against South Korea, and Army Tiger 4.0's dronebot system, anti-drone technology is developing a lot in each country. However, traditional anti-drone technologies in the form of using conventional weapons or electronic warfare weapons have the disadvantage of being expensive, so anti-drone technologies that can be performed at low cost are currently being newly researched. Therfore, in response to these anti-drone technologies, many efforts are being made to increase the survivability of our allies. In line with this trend, this study assumes a virtual anti-drone system applied with cyber domain and electronic warfare domain technologies that can be performed at low cost, rather than a technique using expensive conventional weapons or electronic warfare weapons among various anti-drone technologies. In response to this, we would like to present a plan to increase the survivability of friendly drones.

• The Korean Journal of Food And Nutrition
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• v.24 no.4
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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.

• Journal of Ocean Engineering and Technology
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• v.22 no.4
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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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• v.16 no.4
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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.

• The Transactions of the Korean Institute of Power Electronics
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• v.15 no.3
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• pp.179-187
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• 2010

This paper proposes a new anti-islanding method for single-phase grid-connected photovoltaic (PV) systems using Goertzel algorithm. The proposed scheme is based on inducing increases or decreases of frequencies of load voltage and current that is in the form of existences or periodical variations of the reactive power components. The frequency detection is needed to apply this power variation method to the grid-connected power converter. The proposed method is able to get a fast detection for anti-islanding without the effect of harmonics and noises. The simulation and experiment results validate the effectiveness of the proposed method.

• BMB Reports
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• v.47 no.3
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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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• v.16 no.10
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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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• v.7 no.2
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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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• v.25 no.6
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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.