• Proceedings of the Korean Society of Crop Science Conference
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• 2004.04a
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• pp.168-169
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• 2004

• Journal of The Korean Astronomical Society
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• v.25 no.2
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• pp.79-90
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• 1992

The physical properties of the flux factor K and its application are discussed in connection to the high amplification events. The effects due to random motions of stars in a foreground galaxy are examined in the frame work of moving caustics of gravitational microlenses.

• Journal of Korean society of Dental Hygiene
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• v.1 no.1
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• pp.125-132
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• 2001

This study was carried out to investigate the effect of multi or single application of fluoride plus 0.05% NaF solution on the remineralization of dental caries lesion. The microhardness changes of enamel surface were measured after application of fluoride and precipitation of 0.05% NaF solution on 6 groups of cow's tooth on which the artificial carious lesions were formed first. Test groups were calssified into two step application with NaF, $SnF_2$ and APF under different application time conditions plus 0.05% NaF solution(group I, II, III, IV) and single application with APF plus 0.05% NaF solution (group V) and control(0.05% NaF solution only, group IV). The obtained results were as follows. 1. Regarding microhardness change of enamel surface. microhardness increments in group I(NaF for 1 minute+APF for 3 minutes+0.05% NaF solution for 1 minute), II($SnF_2$ 1 min+APF 3 min+NaF sol.), III($SnF_2$ 2 min+APF 2 min+NaF sol.), IV(NaF 2 min+APF 2 min+NaF sol.) and V(APF 4 min+NaF sol.) were significantly greater than group VI.(P<0.05) 2. Microhardness changes of shorter application time of $SnF_2$ (group II) were significantly greater than group III. (P<0.05) 3. Microhardness changes were variable with kinds of fluoride, application sequence and application time of fluoride. but had no relation with the number of fluoride application.

• The Journal of Industrial Distribution & Business
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• v.9 no.5
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• pp.47-62
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• 2018

Purpose - Based on preceding studies, this thesis focuses on the finding of the definition and category of mobile tourism application and deriving out its characteristics. And after looking for how they make influences on continuous intention to use, we make empirical study with TAM model. Research design, data, and methodology - There are many Chinese tourist who visit Korea with user's constant intention to use of tourism application. This study is to find out the definition and category of mobile tourism application through research of preceding study and to fomulate the research model and hypothesis that how tourism application attributes (convenience, interaction, accessibility, local basis, security) affect constant intention to use of mobile tourism application. In order to verify a hypothesis, we conducted a survey for Chinese users of tourism application. In empirical study, we analyzed a structure model for frequency analysis, reliability analysis, exploratory factor analysis, validity analysis through IBM SPSS Statistics 21.0 and IBM SPSS AMOS 21.0 Results - Among tourism applications, convenience, interaction, accessibility and local basis have positive effects on both perceived usefulness and perceived easiness respectively. But security does not. Also perceived easiness has a positive effect on perceived usefulness. Finally, perceived usefulness and perceived easiness have positive effect on constant intent to use. Conclusions - Tourism application enterprises should put emphasis on design such as menu or function in order to simplify the operation of new services for new customers. Therefore, comfortable user interface and development of useful function can improve tourism application. Consequently, it leads to the promotion of tourism application. Also, when users perceive tourism application as a useful media which is easy, comfortable and useful content, the degree of constant intention to use becomes increased. It is important to provide plentiful and useful contents for customers and to develop user interface such as easy operation because these factors have positive effects on constant demand and use of tourism application.

• Biomedical Science Letters
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• v.7 no.2
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• pp.79-83
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• 2001

To evaluate an effect of toluene application to skin on the enhancement of liver damage in $CCl_4$-pretreated rats, toluene (35 mg/$cm^2$) was sequentially applied for 5 days to the skin of liver damaged rats with $CCl_4$ (6 times every other day: 0.1 ml/100 g body weight-50% $CCl_4$ in olive oil) On the basis of the functional and morphological findings in rat liver, appling toluene to the skin in liver damaged animals led to the more enhanced liver damage. In addition, by applying toluene to skin of liver damaged rats, the hepatic cytochrome P450 content was somewhat more increased, but the hepatic benzylalcohol dehydrogenase activity was significantly decreased (P<0.001), whereas benzaldehyde dehydrogenase activity was not statistically changed. In conclusion, the toluene application to skin in liver-damaged rat led to enhancement of liver injury that may be due to the accumulation of toluene metabolite in liver.

• The Journal of Korean Physical Therapy
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• v.13 no.1
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• pp.41-48
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• 2001

The purpose of this study was to investigate the effect of cold application on ischemia-reperfusion injury to quadriceps fomoris muscle of the hindlimbs of the rats. Nine weeks old male Sprague-Dawley white rats were divided into three groups : 1) control(only ischemia-reperfusion), 2) cold application before reperfusion(PreCold), 3) cold application after reperfusion(PostCold). All groups were 30 minute, 1 hour, 3 hours reperfusion after 2 hours ischemia with clamping abdominal artery, and investigate superoxide dismutase(SOD) immunohistochemical reaction for quadriceps femoris muscle of right hindlimb. SOD immunohistochemical reaction of experimental groups were more than the control group. Especially, SOD immunohistochemical reaction of PreCold were less than the PostCold.

• Journal of Microbiology and Biotechnology
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• v.5 no.6
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• pp.341-345
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• 1995

Seventy four microorganisms, which have antagonistic activity against to Fusarium culmorum, were tested for their inhibitory effect on colony development of obligate biotroph Erysiphe graminis f. sp. hordei Marchal, the causal agent of powdery mildew on barley plants. Of these, 13 actinomycetes isolates were shown to reduce the colony development of mildew completely by application of their 10% cell-free culture filtrates on barley leaves. An Isolate, A252, was the most powerful antagonist and its antifungal activity was further assessed. The colony development of mildew was significantly reduced by application of the 1% cell-free culture filtrate of isolate A252. In comparison to the control, the protective and curative application of 10% cell-free culture filtrate from A252 showed 88.5% and 96.1% reduction of colony numbers respectively. By the protective application, 68.3% of the inhibition was observed after 9 days of treatment, thus showed prolonged inhibitory effect. In vitro test, complete inhibition of the mycelial growth of Microdochium nivale was achieved by the treatment of 1% A252 culture filtrate and 80.2% of inhibition was observed by the 0.1% treatment.

• The Journal of Korean Physical Therapy
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• v.15 no.1
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• pp.171-184
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• 2003

The purpose of this study was to investigate the effect of heat application on ischemia-reperfusion injury to quadriceps femoris muscle of the rats. Nine weeks old male Sprague-Dawley white rats were divided into five groups: 1) control(only reperfusion following ischemia), 2) heat application before reperfusion following ischemia(PreHeat), 3) heat application after reperfusion following ischemia(PostHeat). All groups were 30 minute, 1 hour, 3 hours reperfusion after 2 hours ischemia with clamping abdominal artery, and investigate superoxide dismutase(SOD) immunohistochemical reactions for quadriceps femoris muscle of the rat. SOD immunohistochemical reaction of experimental groups were more than the control group.

• Journal of radiological science and technology
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• v.45 no.6
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• pp.515-522
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• 2022

The aim of the study was analyzed effect of the interaction with contents (IC), learning satisfaction (LS) and learning achievement (LA) through evaluation of the self-directed learning ability (SDLA) and immersion in learning (IL) for online learning application in the radiation therapy. A total of fifty university students who completed the radiation therapy course were be surveyed. There was significant positive correlation with the IC and the intention to continue using (ICU) in SDLA, and IC, LS, LA, and ICU in LC. The online learning application could be increase the satisfaction and achievement of radiation therapy learning.

• Korean Journal of Pharmacognosy
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• v.41 no.1
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• pp.26-30
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• 2010

The root of Korean ginseng (Panax ginseng C.A. Meyer) is a commonly used herbal medicine in China, Korea, Japan. However, the compositions and effects of Korean ginseng berry are not clear to date. In order to investigate the anti-aging effects in the skin, Korean ginseng berry was extracted with 70% ethanol and tested the biological effects. In the results, Korean ginseng berry extract showed an excellent anti-oxidant effect against oxidative stress and decreased MMP-1 over-expression induced by UV irradiation. Especially the main component of Korean ginseng berry extract, ginsenoside Re, increased hyaluronic acid in HaCaT keratinocytes. We improved Korean ginseng berry could be a good material for the anti-aging effect of skin.