• The Korean Journal of Pesticide Science
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• v.4 no.4
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• pp.12-18
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• 2000

In order to artificially reduce the quinclorac residue in aqueous solution and soil, six potential photosensitizers were screened for their effectiveness in enhancing the photodegradation. The degraded amount of quinclorac in distilled water by sunlight was minor compared to that in the dark, indicating that there was little direct photolysis. The photodegradation ratio of quinclorac in methanol was 40.3%. Whereas, the ratios in the presence of photosensitizers PS-1 (aromatic ketone), PS-3 (polycyclic quinone), and PS-6 (inorganic semiconductor) were 96.6, 72.7, and 95.7%, respectively, showing the most photosensitizing effects. In sand, PS-3 was more effective than any other photosensitizer PS-1 (19.6%), PS-3 (64.1%) and PS-6 ($17.9{\sim}19.4%$). five photoproducts of quinclorac in methanol were identified by GC-MS and quinclorac added with the photosensitizer PS-1 gave three photoproducts. Photoproducts with an aldehyde group formed in methanol were confirmed by the reduction of sodium 3,5-dinitrosalicylate in the Lindsay's method. E. crus-galli war. oryzicola was not controlled by the quinclorac residues photodegraded at tile concentrations higher than 30 ppm of the photosensitizer PS-3 in a flooded rice paddy soil. These results indicate that the quinclorac residues in aqueous solution and soil can be degraded efficiently by tile photosensitizers PS-1, PS-3, and PS-6.

• Journal of Veterinary Clinics
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• v.23 no.4
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• pp.411-415
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• 2006

Ascorbic acid has been used widely as a medium supplement to stimulate cell proliferation, but its effects on cell proliferation have not yet been elucidated, and no reports have analyzed effects on subcultured chondrocytes. Subcultured canine chondrocytes of passage one, two and four were cultured in monolayer and alginate beads with and without ascorbic acid. Cell proliferation was examined by 2,3-Bis(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide inner salt) (XTT) colormetric assay. Ascorbic acid stimulated cell proliferation significantly in both culture methods (p<0.05). The increased cell numbers by stimulation with ascorbic acid were significantly high in passage one cells compared to that of other passages. Differences in cell proliferative capacity by subculturing were not determined. These results suggest that ascorbic acid stimulated the proliferation of subcultured canine chondrocytes and enhanced it more in low-passage cells than in the other cells tested.

• Journal of Family Resource Management and Policy Review
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• v.27 no.2
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• pp.1-17
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• 2023

This study examined the relationship between family-friendly community characteristics and the life satisfaction of working mothers with elementary school children, and investigated whether the relationship was mediated by work-family conflict and facilitation of working mothers. For the analysis, the study used the response data of 627 working mothers from the 11th wave of the Panel Study on Korean Children (PSKC, 2019) and multi-mediation effect analyses were conducted using PROCESS. The main results are as follows. First, the higher neighbor support, the higher the work-family facilitation, which significantly increased life satisfaction. Second, the appropriateness of parenting environment and community service infrastructure satisfaction showed significant indirect effects with life satisfaction through increasing work-family facilitation and lowering work-family conflict. Moreover, the appropriateness of parenting environment was positively related with life satisfaction and it was a only variable that was directly associated with life satisfaction. On the other hand, the convenient access to community service infrastructure was found to lower work-family facilitation and lower life satisfaction, confirming the need for follow-up studies. This study shows that the family-friendly characteristics of the community are important for working mothers with elementary school-age children and provides empirical evidence to improve the family-friendly community characteristics.

• Korean Journal of Cognitive Science
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• v.2 no.2
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• pp.279-307
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• 1990

The present research inverstigates the nature of contextual effects on pronoun reference resolution during text comprehesion.Through three experiments,this research examines how various contextuall informations influence on reference resolution and interact with syntactic variables.In experiment 1,the local context was controlled by biasing the pronoun-sentence context towards a certain preceding referent.The lexical decision time and the forced choice time for the correct referent were measured.The results showed that the local contexts have clear effect on reference resolution.The effects of syntactic ambiguity were also observed though the local context was biased towards a certain referent noun.In experiment 2,the global context effect was examined by introducing the text-thematic context in a preceding sentence while keeping the following pronoun-sentence context neutral.The results showed that the global thematic context bias towards a subject or object in a preceding sentence entails a faster response time than the thematically neutral context.In experiment 3,another aspects of context effects were inverstigated by manipulating the consistency of the preceding thematic context with the following pronoun-sentence context.The results showed that the lexical decision responses and forced referent choice responses were faster when the prethematic context and the post-anaphoric context match than when they mismatch.In sum,the overall results of three experiments of this research indicates that context has a clear effect on pronoun reference resolution during text comprehension.

• Korean Chemical Engineering Research
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• v.46 no.2
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• pp.217-221
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• 2008

To investigate the enhancing effects in transdermal permeation of drug using newly designed ultrasound apparatus of 500 kHz, the transdermal permeation studies through the hairless mouse skin were conducted with lidocaine. The ultrasound apparatus of 500 kHz frequency and transducer were newly developed. The drug permeation studies were performed according to the ultrasound frequencies such as 1 MHz and 500 kHz at $1W/cm^2$ in intensity in continuous mode or pulsed mode, respectively. The results on transdermal permeation of lidocaine according to ultrasound intensity showed that the drug permeation increased as the intensity was higher.

• 한국HCI학회:학술대회논문집
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• 2007.02b
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• pp.497-503
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• 2007

학습의 깊이의 단계를 Bloom은 지식, 이해, 적용, 분석, 종합, 평가라는 6가지의 단계로 나누면서 피상적인 학습과 감이 있는 학습으로 구분하였다. 최근 학습은 면대면 학습에서 뿐 아니라, 웹기반의 학습에서도 피상적인 학습 위주로 이루어진다는 비판을 받고 있고, 웹기반 학습에서는 자기조절 흑은 자기규제의 문제가 가장 큰 문제로 지적 받고 있다. 본 연구에서는 이를 해결하기 위한 방안으로서 감이 있는 학습을 촉진하고, 자기 조절을 촉진하는 메타인지를 웹기반학습에의 인터페이스 디자인에 적용하는 문제를 살펴보았다. 이를 알아보기 위해 메타인지 전략의 가장 핵심 요소인 '자기 점검'의 요소 중 학습 내용들 간의 위계 관계를 보여주는 지도 (MAP) 와 계획세우기를 도와주는 요소 (PLAN)를 기존 연구를 토대로 웹기반의 학습의 인터페이스로 구현하고, 이러한 요소들이 학습, 특히 Bloom이 말한 김이 있는 학습을 촉진하는지를 실험을 통해 살펴보았다. 메타인지를 활용한 웹기반 학습의 효과는 배운 내용의 사후 테스트 점수로 측정되었다. 일반적으로 웹상에서 이루어지는 학습의 일반적인 형태인 학습 중에 확인문제를 푸는 조건 (OX조건)과 확인문제와 학습 내용들 간의 위계 관계를 보여주는 지도를 제시하는 조건 (MAP조건), 이에 덧붙여 사전 계획세우기까지 모두 하는 조건 (PLAN조건)으로 나누어 실험이 진행되었다. 그 결과 첫째, 집단 간 참가자들의 전체적인 학습 점수는 MAP조건이 가장 낮고, OX조건이 중간, PLAN조건이 가장 높은 모습을 보였다. 그러나 이 차이가 통계적으로 유의미하지는 않았다. 또한 모든 조건의 집단에서 행해졌던 학습 중간의 OX점수는 집단별 점수의 차이가 통계적으로 유의미하지는 않았으나, 평균의 차이를 보여주었다. 둘째, 조건별 참가자의 학습 효과는 피상적인 학습수준(암기)에서는 통계적으로 집단 간 유의미한 차이를 보였다. 그러나 감이 있는 수준의 학습(문제해결)에서는 집단 간에 통계적으로 유의미한 학습의 차이를 보이지 않았다. 따라서 깊이있는 학습을 촉진하는 웹기반 학습의 인터페이스 디자인에 대해서는 추후 연구가 필요하다.

• Journal of Bio-Environment Control
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• v.16 no.1
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• pp.47-53
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• 2007

This study was carried out to identify the treatment methods for the inhibition of lateral roots and promotion of hypocotyl enlargement using plant growth regulators for the production of high quality soybean sprouts. Inhibition of lateral root formation was not significant from the $CA_3$ and NAA treatments. From the treatment of BAP, lateral roots were not occurred at all, and hypocotyl enlargement was promoted at the low concentration of $10\;mg{\cdot}L^{-1}\;and\;15\;mg{\cdot}L^{-1}$. Promotion of hypocotyl enlargement was higher as the BAP treatment time was shorter. The optimum time of BAP treatment was 6 hours. Occurrence ratio of lateral roots were low and hypocotyl enlargement was promoted from water supply every 24 hours after BAP treatment. In the indole B treatment, lateral roots occurrence was very low with the concentration of 1.1%, which is much lower than the optimum concentration of 4.2%.

• The Journal of the Korea Contents Association
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• v.22 no.5
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• pp.223-234
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• 2022

This study demonstrated the relationship between members' perception of meaning of work and turnover intention and analyzed the moderating effect of work-family promotion efforts. To this end, data were obtained through a survey of 143 SME workers in Busan, and the results were used for analysis. As a result of the study, first, it was possible to confirm a negative (-) relationship with turnover intention when members in the organization positively perceived the meaning and value of their work. In addition, it was confirmed that efforts to promote work-family within the organization showed a moderating effect in this process. Based on these results, the following implications were derived. First, SMEs operate somewhat insufficient treatment and welfare systems compared to large companies, so they should pay more attention to the design and operation of various personnel systems so that they can recognize the organization's growth potential and technical advantage and meaning of work. In particular, in the case of rapidly growing SMEs, institutional support for work-family promotion may be insufficient, and the importance of introducing and operating a system to further revitalize it was suggested.

• Journal of Life Science
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• v.30 no.11
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• pp.990-998
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• 2020

This study was conducted to evaluate the hair-growth promotion effect in C57BL/6 mice of a new substance mixed with Allium cepa (red)-bioconversion extract and Angelica gigas Nakai. The ethanol extract of Allium cepa (red) was bioconverted through the use of the Bacillus subtilis KJ-3 (BS3) strain, which was named Red-BCQ. The quercetin content of Red-BCQ increased by about 7.4-fold after bioconversion. Angelica gigas Nakai extract (Agnex) contains a large amount of coumarins such as decursin (D) and decursinol angelate (DA). A 1 mg portion of Agnex contained 0.4146 mg of D and 0.3659 mg of DA. Minoxidil has been known to promote hair growth. In this study, the hair-growth promotion effects of Red-BCQ, Agnex, and a mixture of both Red-BCQ and Agnex were compared with 5% minoxidil. Twenty-five mice were divided into five experimental groups including saline (CON), 5% minoxidil (PCON), Red-BCQ (RA), Agnex (AG), and a Red-BCQ-Agnex mixture (RAG)-treated group. Samples were administered orally once a day at a fixed time for 4 weeks. Hair growth was monitored by photograph at 7, 14, 21, and 28 days. We also observed 5α-reductase, alkaline phosphatase (ALP), γ-glutamyl transpeptidase (γ-GT), insulin-like growth factor (IGF)-1, transforming growth factor (TGF)-β1, antioxidant enzyme, and the hair follicles of the skin tissue. In all the results, the RAG-administered group showed greater antioxidative and hair-growth promotion effects than the other groups. These data suggest that RAG has potent stimulating activity on hair growth in C57BL/6 mice.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.7
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• pp.255-264
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• 2019

This study aimed to examine the moderating effects of emotional support and facilitative relationship in the relation of emotional abuse and difficulties in emotion regulation. This research suggests therapeutic methods for reducing the negative effects of emotional abuse. Data about emotional abuse, difficulties in emotion regulation, emotional support, and relationship inventory were collected by online survey from 336 adults in South Korea. To test moderation effects, multiple regression analyses entering emotional abuse, emotional support(facilitative relationship) and their interaction terms were hierarchically conducted. Emotional abuse increased difficulties in emotion regulation. Moderating effects of emotional support and facilitative relationship were found in the relation between father's emotional abuse and difficulties in emotion regulation. But Moderating effects of emotional support and facilitative relationship were not found in the relation between mother's emotional abuse and difficulties in emotion regulation. The different effects of father's emotional abuse and mother's, the effects of adult's positive relationship, and clinical implications of these findings were discussed.