• Journal of Life Science
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• v.19 no.11
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• pp.1666-1671
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• 2009

In Brassica, S locus glycoprotein (SLG) and S locus receptor kinase (SRK) genes function together for self-recognition in the self-incompatibility response. In addition, a water channel called aquaporins (MOD) is required for the self-incompatibility response. In this study, we isolated the SC-SLG, SC-SRK, and SC-MOD genes from a self-compatible line of B. oleracea. In the self-compatible line, the SC-SLG, SC-SRK, and SC-MOD genes showed the highest degree of sequence similarity with published data and to normal expression by RT-PCR. Therefore, it can be concluded that the SCR/SP11 gene of the B. oleracea pollen may not function and/or that mutations may occur in genes for self-incompatibility that are not linked to the S locus region.

• Korean Journal of Plant Tissue Culture
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• v.27 no.3
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• pp.219-226
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• 2000

Lycopersicon peruvianum has a gametophytic self-incompatibility (GSI) mechanism controlled by a single genetic locus (S locus) with multiple alleles. S RNases, an allelic series of abundant stylar proteins, are products of the S locus in L. peruvianum and other Solanaceous plants. The $S_{11}$ RNase gene from L. peruvianum was introduced into a self-compatible (SC) species (Lycopersicon esculentum) to examine whether the expression pattern in the heterologous host mimics that in L. peruvianum. The resultant transgenic L. esculentum plants expressed the introduced gene highly in their styles, which is similar manner to the expresion in L. peruvianum. The $S_{11}$ RNase gene was expressed in the syle at a similar stage of flower development in both transgenic plants of L. esculentum and L. peruvianum without any morphological changes.

• Journal of the Korean Society of Child Welfare
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• no.32
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• pp.99-127
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• 2010

This study is aimed to test the moderating effects of social support networks of parents and children on the relationships between poverty, marital discord, and child abuse. This study utilized the first wave of the Korea Welfare Panel Study, conducted in 2006. Multiple regression analysis was conducted to examine the effects of poverty, marital discord, and social support networks of parents and children on child abuse. The results show that poverty and marital discord have positive(+) effects on child abuse and that social support networks of parents and children have negative (-) effects on child abuse. This study also tested the moderating effects of social support networks of parents and children on the relationships between poverty, marital discord, and child abuse. The results confirm that social support networks of both parents and children can moderate the effects of poverty and marital discord on child abuse. That is, when the level of social support networks of parents and children are high, the influences of poverty and marital discord on child abuse becomes smaller or insignificant. Implications of study findings, which includes child protection strategies through improvements in supports for parents and their children are discussed.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 1997.04a
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• pp.73-74
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• 1997

• KOMUNHWA
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• no.52
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• pp.65-83
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• 1998

• Clean Technology
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• v.19 no.4
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• pp.476-480
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• 2013

The growth behavior of $CH_4$ and $SF_6$ mixture gas hydrate has been investigated by a combined approach of Raman spectroscopy and molecular modeling. Raman spectroscopy results presented that when $CH_4$ is used only, $CH_4$ guest molecule is inserted first into the large cavity of the host structure built by $H_2O$ molecules and then into the small cavity to stabilize the whole gas hydrate structure. In the other hand, when $SF_6$ is mixed together, $SF_6$ is favored over (or competing with) $CH_4$ in being inserted into the large cavity and the small cavity still prefers $CH_4$ insertion. The calculations of binding energies clearly supported this. While $SF_6$ has a binding energy of -26.9 kcal/mol a little lower than -24.2 kcal/mol of $CH_4$ in the large cavity, $SF_6$ and $CH_4$ has 1.2 kcal/mol and -22.0 kcal/mol, respectively, in the small cavity. It indicates that the sizable $SF_6$ is not preferred in the small cavity but has a relative energetic advantage over $CH_4$ in the large cavity.

• Proceedings of the Materials Research Society of Korea Conference
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• 2003.11a
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• pp.72-72
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• 2003

반점착막으로 활용되고 있는 불화유기박막의 형성을 ICP를 이용하여 나노미터로 성장시키고 이를 기계적/화학적 관점에서 특성평가를 수행했다. 증착된 불차유기 박막은 알루미늄 시편위에서 110도 근처를 나타냈으며 30도 근처의 낮은 히스테리시스를 보이는 안정한 박막이 형성되었다. 극성과 비극성 용액을 사용하여 표면에너지를 검사한 결과 약 20 mN/m 이하의 낮은 표면에너지를 얻을 수 있었다. AFM을 이용한 실험결과 표면의 점착력이 약 4nN으로 매우 낮은 점착력을 가짐을 확인 할 수 있었다. FTIR 실험결과 표면에 CF$_2$ 와 같은 불화유기 그룹이 발견되었다.

• Journal of the Korean Home Economics Association
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• v.27 no.1
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• pp.127-139
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• 1989

본고는 저소득층 재미유학생을 중심으로 한국가구와 중국가구의 가계재정복지 및 관리행동의 인식을 비교.검토하였다. 표본의 크기는 한국 10가구와 중국11가구였다. 재정후생 조사결과에 의하면 한국 가구는 중국 가구에 비해 자산취득 등 소비에 있어서는 더 높은 평균소득을 가졌음에도 불구하고 소득수준에 더 많은 불만을 나타내고 잇었다. 재정관리행동 조사는 중국가구가 더 즉흥적인 혹은 예산밖의 소비를 하고 있는 것을 보여주고 있다. 또한 한국 가구는 재정관리 및 소비지출을 부부중심으로 행하는 반면, 중국 가구는 남편중심으로 행하고 있었으며 중국가구가 재정관리 및 소비에 대하여 더 높은 불화를 나타내고 있었다. 더불어 한국가구는 주로 부인들이 구매하는 적은 금액의 지출에, 중국 가구는 남편들이 구매하는 큰 금액의 지출에 상대적으로 더 많은 불화를 나타내었다. 한편 한국 가구의 구매불화조정은 남편에 의해, 중국 가구의 불화조정은 부인에 의해 주로 이루어 지고 있었다.

• Korean Journal of Soil Science and Fertilizer
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• v.14 no.3
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• pp.157-162
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• 1981

The studies we re carried out to examine the effect of soil improvement agents, such as lime, wollastonite and phosphate, in reducing the damage caused by hydrogen fluoride gas to the vegetative growth of rice. The yield loss, damage rate of the plant leaves, the fluoride of the plants were measured. The results obtained are summarized as follows : 1. The best results were obtained a treatment of lime and wollastonite. 2. The rice yield was not significantly increased by the soil improvement agents. 3. The fluoride content of the plants was positively correlated with yield loss and damage rate during vegetative growth.

• Korean Journal of Heritage: History & Science
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• v.55 no.3
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• pp.120-129
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• 2022

The purpose of this study is to analyze the chemical composition of smalt pigments used in 10 large Buddhist paintings in the Joseon Dynasty using energy dispersive X-ray spectroscopy, and to clarify the material and characteristics by observing morphological characteristics using polarized light microscopy and a scanning electron microscope. Through chemical composition analysis, the smalt of all 10 large Buddhist paintings is judged to be potash glass using SiO₂ as a former and K₂O as a flux. In addition to the components related to cobalt ore used as a colorant, the paintings were found to contain high levels of As₂O₃, BaO, and PbO. The smalt particles did not have specific forms, and were blue in color, with various chromaticity. In some particles, conchoidal fracture, spherical bubbles, and impurities were observed. Through backscattered electron images, it was found that the smalt from paintings produced in the early 18th century AD had a high level of As, but the smalt from paintings produced from the mid-18th century AD onwards exhibited various contrast differences from particle to particle, and there was smalt with high levels of As, Ba, and Pb. Through the above results, the large Buddhist paintings in the Joseon Dynasty are divided into three smalt types. Type A is a type with high As₂O₃, type B is a type with high BaO, and type C is a type with high PbO. Looking at the three types of smalt pigments by the period of production, although some in-between periods were not detected, type A was confirmed to have been used from 1705 to 1808, while type B and type C were shown to have appeared in 1750 and used until 1808. This reveals that only one type of smalt was used until the early 18th century AD, and from the middle of the 18th century AD, several types of smalt were mixed and used in one large Buddhist painting. Studies such as this research are expected to provide insights into the characteristics of the smalt pigments used to produce large Buddhist paintings at the time.