• Korean Journal of Pharmacognosy
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• v.26 no.2
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• pp.148-153
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• 1995

As an initial step for evaluating hepatoprotective components against alcohol-induced toxicity, the effect of various fractions from Aloe vera on alcohol metabolism in rats were examined and the results were as follows: Water soluble fraction, after a single oral administration to rats, was found to cause a significant decrease in the serum ethanol concentration as well as enhancement of liver cytosolic ADH activity. On the other hand, the fractions soluble in organic solvent was found to cause an increase in the blood ethanol concentration and inhibit ADH activity. Further fractionation of the water soluble fraction by ultrafiltration system gave four subfractions corresponding to molecular weight and treatment of them in rats demonstrated that subfraction of M.W. > 30,000 exhibited the most potent enhancing activity of ethanol methabolism.

• Proceedings of the Korean Vacuum Society Conference
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• 2011.08a
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• pp.121-121
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• 2011

Graphene formed by chemical vapor deposition was exposed to the various plasmas of Ar, O2, N2, and H2 to examine its effects on the bonding properties of graphene to metal. Upon the Ar plasma exposure of patterned graphene, the subsequently deposited metal electrodes remained intact, enabling successful fabrication of field effect transistor (FET) arrays. The effects of enhancing adhesion between graphene and metals were more evident from O2 plasmas than Ar, N2, and H2 plasmas, suggesting that chemical reaction of O radicals induces hydrophilic property of graphene more effectively than chemical reaction of H and N radicals and physical bombardment of Ar ions. From the electrical measurements (drain current vs. gate voltage) of field effect transistors before and after Ar plasma exposure, it was confirmed that the plasma treatment is very effective in controlling bonding properties of graphene to metals accurately without requiring buffer layers.

• Journal of Information Technology Services
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• v.16 no.3
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• pp.67-81
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• 2017

IT project teams are composed of experts from various domains with different backgrounds, such as business and technologies. Thus, enhancing knowledge sharing and increasing team social capital are critical for the success of the project. This study examines the relationship among the team social capital, team climate and team performance. A research model and hypotheses are developed from literature review and empirically validated. The research model consists of team social capital, team climate and team performance. Specifically, team social capital, as antecedents, wasconceptualized asinternal and external differentiated by team boundary, and team climate is conceptualized as innovative climate and supportive climate. Using measures adopted from previous studies, 166 data points were collected to test the research model and related hypotheses. PLS data analysis indicated that internal and external social capitalhave positive effect on innovative climate while internal social capital has a positive effect on supportive team climate. The innovative and supportive climate has significant effect on the team performance. Based on the results, we proposed several team management skills for IT project managers. Theoretical constributions are discussed at the end with limitations and further studies.

• The Korean Journal of Food And Nutrition
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• v.7 no.3
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• pp.177-182
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• 1994

The effect of phosphate salt (NafHP04) and sodium citrate on the emulsion stability of soy protein isolate (SPI) in the presence of calcium was investigated in terms of salt concentration and addition order. Both phosphate and citrate salts decreased the solubility of SPI despite their pH enhancing effects. Addition of calcium chloride (CaCl2) significantly decreased ES, which showed nearly negligible at more than 3 mM CaCl2 concentration. When Na2HP04 were added in the presence of 5 mM Cac12, 55 greatly increased up to 20mM concentration, above which however ES decreased. It was found that the addition order of Na2HPO4 and CaCl2 affected ES. The addition of phosphate and subsequent CaCl2 exhibited the higher 55 than the reverse order. In both cases, the overall ES profile was found to be nearly similar to the solubility profile of SPI, indicating the positive relationship between solubility and emulsion stability of SPI in the presence of calcium. Similar trend to the phosphate effect on ES was also observed for sodium citrate in the presence of calcium.

• Journal of Magnetics
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• v.13 no.3
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• pp.88-91
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• 2008

This study examined the effect of Sn co-doping on the transport and magnetic properties of Cr-doped $In_2O_3$ thin films grown on (100) silicon substrates by pulsed laser deposition. The experimental results showed that Sn co-doping enhances the magnetization and appearance of the anomalous Hall effect, and increases the carrier (electron) concentration. These results suggest that the conduction carrier plays an important role in enhancing the ferromagnetism of a laser-deposited Cr-doped $In_2O_3$ film, which may have applications in transparent oxide semiconductor spin electronics devices.

• Journal of Haehwa Medicine
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• v.20 no.2
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• pp.91-98
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• 2012

Objective : This is a comprehensive review summary of anticancer effect through autophagy using herb. Method : Data were retrieved from pubmed and authorized texts concerning anticancer effect through autophagy using herb.g its ant Results : A total of 5 potentially relevant studies were identified with including 4 in vitro papers. All papers were related to single herb extract or its compound providini-cancer effect through autophagy mechanisms of up-regulated pro-autophagy proteins and down-regulated anti-autophagy proteins. Conclusion : We can search five potentially relevant studies with anticancer treatment through enhancing autophagy mechanism. Autophagy will be a good pathway mechanism to explore novel experimental therapeutics in herb.

• International Journal of Naval Architecture and Ocean Engineering
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• v.4 no.4
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• pp.477-487
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• 2012

We investigated the aerodynamic characteristics of a three-dimensional (3D) wing with an endplate in the vicinity of the free surface by solving incompressible Navier-Stokes equations with the turbulence closure model. The endplate causes a blockage effect on the flow, and an additional viscous effect especially near the endplate. These combined effects of the endplate significantly reduce the magnitudes of the velocities under the lower surface of the wing, thereby enhancing aerodynamic performance in terms of the force coefficients. The maximum lift-to-drag ratio of a wing with an endplate is increased 46% compared to that of wing without an endplate at the lowest clearance. The tip vortex of a wing-with-endplate (WWE) moved laterally to a greater extent than that of a wing-without-endplate (WOE). This causes a decrease in the induced drag, resulting in a reduction in the total drag.

• Journal of Pharmaceutical Investigation
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• v.29 no.4
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• pp.337-341
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• 1999

We have studied the stability and transdennal flux of prostaglandin $E_1\;(PGE_1)$ from various donor solutions through hairless mouse skin. Stability in HEPES buffer or in propylene glycol (PG) solution where enhancer (oleic acid (OA), propylene glycol monolaurate (PGML), transcutol (TC), ethanol (EtOH))s dissolved was investigated. $$PGE_1 was not stable in HEPES buffer. The concentration of $$PGE_1 decreased continuously for 7 days, and the degradation rate constant was $0.0028\;h^{-1}$, assuming first order reaction. The effect of current or penetration enhancer on the degradation was minimal. Percutaneous transport from HEPES buffer by passive or iontophoretic delivery without enhancer was close to nil. When OA or PGML was used together with PG, both passive and iontophoretic flux increased. PGML showed better enhancing effect than OA. Flux by cathodal delivery was about 2 times larger than that by passive delivery. Flux by anodal delivery was lower than that by passive delivery. TC and EtOH also increased the transdermal flux, but the effect was not as good as that observed when OA or PGML was used. These stability and flux data provide important information on how to formulate the patch, which will be the next step of this work, and on the polarity of current to use during iontophoresis.

• Journal of Korean Clinical Nursing Research
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• v.23 no.1
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• pp.100-109
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• 2017

Purpose: Nurses' resilience plays an important role in overcoming the challenges that nurses often encounter at clinic, and many factors have been examined which influence on nurses' resilience levels. Through this study, those factors were systematically searched and quantitatively synthesized. Methods: In order to find relevant studies, both English and Korean academic databases were searched, and, finally, a total of 33 articles were identified and included in this analysis. Results: The effect size on the protective variables was large and that of the risk variables was medium. In the protective variable group, the job variable group showed a larger effect size compared to the organizational variable group. Among the protective variables, compassion satisfaction showed the highest contribution on enhancing the resilience level of nurses. In the risk variable group, the personal variable group showed the highest effect size, which was followed by the organizational and job variables. Among the risk variables, the personal stress response showed the highest contribution to decreasing the level of resilience of nurses. Conclusion: This study provides a meaningful data for future studies in terms of developing evidence-based interventions to enhance the levels of resilience among Korean nurses.

• Industry Promotion Research
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• v.1 no.1
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• pp.35-40
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• 2016

This study verified the effect of youth university graduates' workplace satisfaction on preparation for turnover by analyzing panal data. The study results showed that satisfaction of general workplace, possibility of personal development, autonomy/authority, monthly wage(p<.001), working environment, office hours, usefulness of major(p<.01), personnel system, employment stability, welfare benefits(p<.05) affected preparation for turnover. Also, sex, marital status, type and location of university, major, status of workers affected preparation for turnover. This study provided implication for reducing turnover and enhancing workplace settlement by confirming the effect of youth university graduates' workplace satisfaction on preparation for turnover.