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양규호,박창헌,손정수,김낙현,최남기,김선미,김기백,신혜성 大韓小兒齒科學會 2009 大韓小兒齒科學會誌 Vol.36 No.3
혼합치열기 정상교합 아동 24명(남:14명 여:10명 초진 시 평균 나이 9±1.3세, 평균 관찰 기간: 13±1.3개월)에 대한 성장량을 측정하여 기능적 교정장치의 순수 치료효과를 평가하는데 도움이 되기 위해 3회(5~8개월 간격) 촬영한 측모 두부 방사선 규격 사진에 대한 분석 결과 다음과 같은 결론을 얻었다. 1. 남아는 상악골은 전하방, 하악골은 전방성장하였고, 여아는 상하악골이 전하방 성장하였다(p<0.05). 2. 상하악골의 남녀간 차이에서 수평적 성장상태는 여아가 컸고(A point 여아: 2.39mm, 남아: 1.26mm, p<0.05), 수직적 성장상태는 유의한 차이가 없었다. 3. 상악 전치의 치축은 두개저에 대해서 순측 경사하였고(p<0.01) 하악 전치의 치축은 큰 변화가 없었다. The purpose of this study was to provide the reference data evaluating the treatment effect of orthopedic appliances. The skeletal and dental growth increments were measured in 24 normal mixed dentition children(boys: 14, girls: 10) by three serial lateral cephalograms: initial mean age: 9±1.3 years, mean observation period: 13±1.3 months, Cephalometric changes were analysed. The results were as follows: 1. In boys, the maxilla showed forward and downward growth pattern and the mandible showed forward growth pattern(p<0.05). In girls, the maxilla and mandible showed forward and downward growth pattern(p<0.05). 2. Horizontal growth of both maxilla and mandible in girls was superior to those in boys(A point: girls: 2.39mm, boys: 1.26mm, with p<0.05), whereas vertical growth of both maxilla and mandible in boys was similar to those in girls. 3. The change in tooth axis showed labioversion of upper incisor(p<0.01) and comparatively stable lower incisor position.
Seon-Hye Son,Zakaullah Khan,Young Ho Kim 한국응용곤충학회 2008 한국응용곤충학회 학술대회논문집 Vol.2008 No.05
Root-knot nematodes, Meloidogyne spp., are the most important plant-parasitic nematodes, causing severe crop yield loss with an estimated 1000 billion dollars a year worldwide. The nematodes also cause disease complexes with other microbial pathogens, damaging plants more severely than each of the pathogens alone or their sum does and making control efficiencies weakened or nullified in disease complexes. In our study, the synergistic effect of the root-knot nematode Meloidogyne incognita was confirmed in the fusarium wilt of tomato caused by Fusarium oxysporum f. sp. lycopersici, which showed greatly increased wilt symptoms in combined inoculations. Use of antifungal and nematicidal plant growth-promoting rhizobacteria (PGPR) were considered for controlling the disease complex because of its causal agents. Among forty PGPR strains tested, P. polymyxa G508, G462 and P. lentimorbus G158 showed strong antifungal and nematicidal activities against F. oxysporum f. sp. lycopersici and M. incognita second stage juveniles (J2), respectively. The Cultures of these bacterial strains inhibited the nematode egg hatching completely even at 1% diluted concentration. In pot experiments, treatment of the Paenibacillus strains reduced wilt severity of tomato with the control efficacy of about 90% ~ 98%. Their treatment also reduced gall formation by 64% - 88% compared to the untreated control. P. lentimorbus GBR158, which well established on seeds and hypocotyls at high population levels, reduced the disease complex greatly with the control value of about 98% when the tomato seeds were treated with the bacterial strain. Plant growth was also stimulated by the seed treatment of the bacterial strain. Scanning electron microscopy revealed alteration and distortion of hyphal cell walls of F. oxysporum and lysis of M. incognita egg shell by the bacterial treatment, showing direct antifungal and nematicidal action mechanisms. No extensive giant cell formation was observed near nematode in the tomato roots treated with the bacteria, indicating a systemic action mechanism. All of these results suggest that the Paenibacillus strains, especially G158 may have a high potential to be developed as biological agents for controlling the root-knot nematode and the disease complex.
키워드 네트워크분석을 이용한 국내 외상 후 성장 연구동향 분석
손혜선(Son, Hye-Seon),천성문(Cheon, Seong-Moon) 한국교육치료학회 2022 교육치료연구 Vol.14 No.1
본 연구는 키워드 네트워크 분석을 통한 국내 외상 후 성장 연구의 지식구조를 파악하였다. 외상 후 성장과 관련된 국내 연구에서 2010년부터 2021년까지 게재된 연구논문들 중 301편의 논문의 키워드 1,694개를 추출하였다. 수집된 자료는 Textom과 UCINET 6로 분석하였고, 전체 및 시기별, 대상별 네트워크별로 키워드간 구조를 심층적으로 분석하였다. 연구결과는 첫째, 전체 네트워크 분석을 통해 연구대상, 연구방법, 주요변인인 사회적 지지, 의도적 반추, 삶의 의미 등이 연구의 핵심주제로 나타났다. 둘째, 시기별 네트워크 분석에서는 시기 1에서 시기 2를 지나면서 연구의 방향이 개인적 변인에서 사회적 환경에 따른 외상경험에 대한 사회적 요인으로 연구의 변인이 옮겨갔으며, 종단 및 관계 연구로 연구방법이 확대되었다. 셋째, 대상별로 청소년, 성인 네트위크에서는 각각 사회적 지지, 의도적 반추, 외상경험이 동일하게 핵심주제로 나타났다. 이러한 연구의 분석 결과와 논의를 바탕으로 향후 외상 후 성장 연구에 대한 방향과 시사점을 제시하였다. This study identified the knowledge structure of domestic post-traumatic growth research through keyword network analysis. In a domestic study related to post-traumatic growth, 1,694 keywords of 301 papers were extracted out of the research papers published from 2010 to 2021. The collected data were analyzed by Textom and UCINET 6, and the structure between keywords was analyzed in depth by network by overall, period, and target. First, through the analysis of the entire network, research subjects, research methods, major variables such as social support, intentional reflection, and meaning of life were found to be key topics of the study. Second, in the analysis of the network by period, the direction of the study shifted from the personal variable to the social factor for trauma experience according to the social environment from period 1 to period 2, and the research method was expanded to longitudinal and relationship research. Third, social support, intentional rumination, and trauma experience were the same key topics in youth and adult netweek, respectively. Based on the analysis results and discussions of these studies, directions and implications for future post-traumatic growth studies were presented.
Biological control of the complex disease caused by the root-knot nematode and the fungal pathogen
Young Ho Kim,Seon-Hye Son 한국응용곤충학회 2010 한국응용곤충학회 학술대회논문집 Vol.2010 No.10
It is well known that the root-knot nematodes, Meloidogyne spp., incite and aggravate the diseases caused by fungal and bacterial pathogens. The synergistic effects of the inoculation of Meloidogyne incognita combined with Fusarium oxysporum f. sp. lycopersici showed the greatly increased wilt symptoms developed on tomato plants compared to the inoculation of either of the two pests alone. For the biological control of the complex disease, a variety of bacterial isolates were tested for antagonistic effects to select ones that had both nematicidal and antifungal activities. Among forty plant growth-promoting rhizobacteria (PGPR) tested, Paenibacillus polymyxa G508 and G462 and P. lentimorbus G158 showed strong antifungal and nematicidal activities against F. oxysporum f. sp. lycopersici and second-stage juveniles (J2) of M. incognita, respectively, and also inhibited egg hatch of the nematode. The addition of Paenibacillus strains into potted soil suppressed the Fusarium-wilt severity and root galling on tomato and increased plant growths. P. lentimorbus G158 were abundantly proliferated on tomato seeds and hypocotyls more than P. polymyxa G 462 and had no phytotoxic effect on tomato plant. Under the greenhouse conditions, seed treatment of P. lentimorbus G158 reduced wilt severity caused by Fusarium wilt-root knot disease complex and root gall formation and increased tomato growth compared to the untreated control. Root-galls caused by both pathogens treated with bacterial culture had fewer and smaller giant-cells than untreated control, and scanning electron microscopy revealed alteration and distortion of hyphal cell wall of F. oxysporum and lysis of M. incognita egg shell by the bacterial treatment. All of these results suggest the Paenibacillus strains, especially G158 may have a high potential developed as biological control agents for the complex disease.