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An Sihyun,Cho Gyeongjun,Ahn Jae-Hyung,Weon Hang-Yeon,Kim Dayeon,Ko Young-Joon,Yeon Jehyeong,Chung Joon-hui,Choi Han Suk,Heo Jun 한국미생물·생명공학회 2024 한국미생물·생명공학회지 Vol.52 No.1
제주도매립지에서분리된 Massilia strain KACC 81254BP 는생분해성플라스틱폴리하이드록시알카노에이트(PHA)를분해할수있다. 이균주의유전체는 5,028,452 bp의원형염색체로구성되어있으며, G+C 함량은 64.6%이다. 이유전체는 PHB depolymerase를포함한 4,513개유전자가확인되었다. 이유전체는신호전달과아미노산수송등대사와관련한다양한유전자를포함하고있다. 이연구는 Massilia sp. KACC 81254BP의폴리에스터 플라스틱 분해 효소와 관련된 유전학적 정보를 제공한다. Massilia sp. KACC 81254BP, isolated from a landfill on Jeju Island, Republic of Korea, possesses the capability to degrade polyhydroxyalkanoates (PHAs). The genomic analysis of strain KACC 81254BP consists of a circular chromosome comprising 5,028,452 base pairs with a DNA G+C content of 64.6%. This complete genome consists of a total of 4,513 genes, including those encoding the PHA degradation enzyme (PhaZ). This study offers valuable genomic insights into the enzymes responsible for degrading polyester plastics.
성별, 학교적응, 학업수행능력이 초등학생의 자아존중감에 미치는 영향 :잠재성장모형을 활용한 종단분석
김시현 ( Kim¸ Sihyun ) 인하대학교 교육연구소 2020 교육문화연구 Vol.26 No.6
본 연구는 성별이나 학교적응 등 개인적 변인과 자아존중감의 관계를 종단적으로 탐색함으로써 자아존중감 발달에 대한 이해를 넓히고, 증진과 관련된 시사점을 도출하고자 하였다. 이를 위해 한국아동패널 종단자료를 바탕으로 잠재성장모형을 적용하여 분석하였다. 분석 결과는 다음과 같다. 첫째, 아동의 자아존중감은 시간의 변화에 따라 미미하게 증가하였다. 둘째, 성별과 학업수행능력은 자아존중감 초기값에 정적으로, 변화율에는 부적으로 유의미한 영향을 미쳤으나 학교적응은 자아존중감의 변화에 유의한 영향을 미치지 않았다. 즉 여아이며, 학업수행능력이 높을수록 자아존중감 초기값이 높은 반면 변화율은 감소하였다. 셋째, 통제변인으로 투입한 월 가구소득은 아동 자아존중감의 초기값에 정적으로 유의한 영향을 미쳤다. 본 연구결과에 근거하여 아동의 자아존중감 증진을 위한 방안을 제시하였다. The purpose of this study was to investigate longitudinal changes in self-esteem of elementary school students and to identify the effect of gender, school adjustment, and academic performance on self-esteem by using latent growth modeling. For this, the longitudinal data collected by Korea Institute of Child Care and Education was used. The results of this study were as follows. Firstly, the child's self-esteem slightly has increased and there were individual differences in the initial value and rate of change of self-esteem. Secondly, gender and academic performance had a significant effect on the initial value of self-esteem positively while they had negative impacts on the rate of change. In other words, girls had higher initial values of self-esteem than boys and the higher the academic performance, the higher the initial value of self esteem, while the rate of change has decreased. Furthermore, school adjustment did not significantly affect the initial level and the change of self-esteem. Thirdly, monthly household income as a control variable had a statistically significant effect on the initial value of self-esteem. These findings of this study contribute to in-depth understanding of children’s self-esteem and providing appropriate interventions to enhance self-esteem of elementary school students.
Analysis of current drift on p-channel pH-Sensitive SiNW ISFET by capacitance measurement
Kim, Sihyun,Kwon, Dae Woong,Kim, Sangwan,Lee, Ryoongbin,Kim, Tae-Hyeon,Mo, Hyun-Sun,Kim, Dae Hwan,Park, Byung-Gook ELSEVIER 2018 Current Applied Physics Vol.18 No.supp
<P>The mechanism of drift effect in pH-sensitive silicon nanowire (SiNW) ion sensitive field effect transistor (ISFET) is comprehensively studied by measuring the time-dependent drain current (I-D) and the gate capacitance (C-G) under different liquid-gate biases (V(LG)s) and pH levels. It was revealed that the origin of the current drift can be divided into three different mechanisms; the bulk ionic diffusion in sensing insulator, the chemical modification of insulator surface, and the oxide etch process induced by hydroxide (OH-) ion. Based on the V-LG/pH dependency of current drift and the transient C-G variation, it is clearly recognized that the drift of n-type SiNW (n-SiNW) ISFET results from H+ thorn diffusion in the insulator, whereas that of p-type SiNW (p-SiNW) ISFET is caused by temporal chemical modification (hydration) of the insulator, along with the oxide thickness (t(ox)) reduction by OH- ions. (C) 2017 Elsevier B.V. All rights reserved.</P>
Possible Role of Phthalate in the Pathogenesis of Endometriosis: In Vitro, Animal, and Human Data
Kim, Sung Hoon,Cho, SiHyun,Ihm, Hyo Jin,Oh, Young Sang,Heo, Seung-Ho,Chun, Sail,Im, Hosub,Chae, Hee Dong,Kim, Chung-Hoon,Kang, Byung Moon Issued for the Endocrine Society by the Williams & 2015 The Journal of clinical endocrinology & metabolism Vol.100 No.12