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Additions to the Encyrtidae (Hymenoptera: Chalcidoidea) of Korea
최수빈,정성훈 국립중앙과학관 2023 Journal of Asia-Pacific Biodiversity Vol.16 No.4
Three genera and species of Encyrtidae (Hymenoptera: Chalcidoidea), such as Aenasius martinii (Compere, 1931), Hexencyrtus miyama (Ishii, 1928), and Mayridia parva (Wu et al., 2001), are newly discovered from Korea. The diagnoses and photographs of the three species are presented.
ADHD아동의 화용능력: 사회적 갈등상황 해결 능력을 중심으로
최수빈,최경순,황민아 한국정서행동장애학회 2019 정서ㆍ행동장애연구 Vol.35 No.2
The propose of this study was to investigate pragmatic ability of children with ADHD in conflicting situation stories. Specifically, We examined children with ADHD how differ with normal children in terms of understanding the causes of conflict, understanding other people's emotions, and suggesting solutions to conflict in social conflict situations. The participants were 10 children with ADHD between the ages of 7 and 10, and 10 normal children. All participants had normal range intelligence and normal range language ability in standardized language test. All participants listened to Fifteen conflict stories, they had to choosed causes of conflicts among 3-multiple choice item, main character' feeling among 4-multiple choice item and said problem solving plan about conflicting situation. The result showed that children with ADHD were significantly inferior to found causes of conflicts, understanding of others' feeling and presentation of solving plan than normal children. These results suggested that children with ADHD have poor pragmatic ability in conflict situation despite their normal IQ and linguistic ability. 본 연구는 ADHD 아동의 화용능력을 알아보기 위하여 사회적 갈등상황 이해능력을 연구하였다. 구체적으로 일상생활에서 흔히 일어나는 갈등 상황에 대한 원인 이해, 타인 감정 이해 및 갈등 해결방안의 제시에 있어서 ADHD아동이 또래 일반아동과 비교하여 어떠한 차이를 보이는지 알아보았다. 이를 위하여 지능과 언어능력에서 정상범주에 위치한 만 7-9세 ADHD 아동 10명과 또래 일반아동 10명이 연구에 참여하였다. 연구 도구로 15개의 갈등상황 이야기를 만들어 각 이야기와 관련된 갈등원인, 타인감정이해 및 해결방안용 질문을 제작하였다. 아동들은 갈등 상황 이야기를 들은 후, 갈등 원인 및 타인 감정 이해 질문에 대한 정답을 보기에서 찾았고, 갈등 해결방안은 구어로 제시하였다. 실험 결과, ADHD 아동은 갈등 원인 파악, 타인 감정 이해 및 해결방안 제시에 있어서 또래 일반아동과 비교하여 유의미하게 저조한 수행을 보였다. 이러한 결과에 대하여 ADHD 아동이 정상수준의 지능과 언어 능력을 지니고 있다 하더라도 갈등 상황에 대한 적절한 이해능력에 있어서 어려움을 가지고 있음을 확인하였다.
p-type CuAlO2의 합성 메커니즘과 Mg 도핑량에 따른 전기적 특성분석
최수빈,장수진,유명재,이용제 한국물리학회 2023 새물리 Vol.73 No.1
A solid-phase synthesis mechanism of CuAlO2 was studied, and a method for suppressing the secondary phases of CuO and CuAl2O4 during synthesis was developed. The p-type electrical characteristics according to the Mg addition amount were analyzed. Results showed that during heating, Cu2O was changed to CuO with high mobility and reactivity formed on the Al2O3 surface. The CuO-Al2O3 interface induced a diffusion reaction depending on the temperature. During heat treatment, Cu loss occurred in the upper and lower layers and CuO phase was observed in the middle layer. This non-uniformity caused Cu loss in the entire sample. After Cu loss was compensated, a single CuAlO2 phase was obtained. CuAlO2 and CuAl(1-x)Mg(x)O2 showed p-type conductivity. The residual amount of CuO and CuAl2O4 phases increased with the Mg doping amount and affected the decrease in hole mobility. CuAlO2의 고상 합성 메커니즘을 제안하고, 합성 중 CuO 및 CuAl2O4 2차상을 억제 하는 합성법을 확보하였다. Mg 도핑량에 따른 p-type 전기적 특성을 분석하였다. Cu2O는 공정중 CuO로 변화되고 높은 이동성과 반응성으로 Al2O3표면에 반응막을 형성 후 온도에 따라 확산 반응을 유발시키며 1000 °C 이하에서는 CuAl2O4상이 형성되며 1100 °C 이상에서는 CuAlO2상이 형성되는 것으로 제안하였다. 합성 열처리된 시료는 불균일한 층으로 상하부층은 Cu가 부족하고 중간층에서는 CuO상이 관측되었다. 이러한 불균일은 전체 시료에서 Cu가 손실이 발생됨을 확인하였다. Cu 손실을 보상하여 합성한 결과 2차 상이 없는 단일 CuAlO2상을 확보하였다. CuAlO2와 CuAl(1-x)Mg(x)O2가 p-type 전도도를 갖는 것을 확인하였고, Mg 도핑량 증가에 따라 잔존한 CuO와 CuAl2O4상의 양이 증가하여 hole 이동도에 영향을 주는 것으로 분석하였다.
최수빈,차상원 대한화학회 2020 Bulletin of the Korean Chemical Society Vol.41 No.1
Reactive ionization with atmospheric pressure ionization (API) methods have been utilized for mass spectrometry (MS) to enhance ionization efficiency of an analyte, to recognize a specific functional group of an analyte, and to investigate reaction pathways or intermediates for a certain in situ reaction. Paper spray ionization (PSI) is one of the major API techniques for reactive ionization. In reactive PSI, one of the reactants is usually spotted onto a paper tip and the other reactant is delivered through a spraying solution. After in situ reaction, reaction products are transported to the end of the tip and ionized. In this study, we investigated reactions between isothiazolinones (ITs) and cysteamine (CA) by reactive PSI MS. An IT is a heterocyclic compound that has a conjugated ketone moiety and used as a biocide or a preservative. CA is a stable aminothiol that is often used as a bifunctional covalent modifier. Through reactive PSI MS of ITs with CA, we found that a covalent modification of an IT by CA was possible and sensitivities for ITs were improved compared to conventional PSI MS of ITs that did not employ CA. In addition, possible reaction pathways between ITs and CA during reactive PSI were suggested although we could not confirm a specific reaction pathway in the current study.