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Ryu, Hanyoung,Song, Inkyung,Kim, Beomyoung,Cho, Soohyun,Soltani, Shoresh,Kim, Timur,Hoesch, Moritz,Kim, Choong H.,Kim, Changyoung American Physical Society 2017 Physical Review B Vol.95 No.11
<P>We performed angle-resolved photoemission experiments on Au(111) surface with circularly polarized light. Data were taken with photon energies in the range between 20 and 100 eV in order to investigate the photon energy dependent behavior in the circular dichroism (CD). While the magnitude of the normalized CD value varies with a maximum value of about 70%, the sign of CD does not change for the photon energy within the range, inconsistent with the prediction based on the density-functional theory (DFT) calculation. Our calculation of the CD using DFT initial state and free electron final state shows a better consistency with experimental results than an earlier study using the inverse low-energy electron diffraction state as the final state. We briefly discuss the dominating factor that determines the CD from Au(111) states.</P>
액체질소 직접분사 냉각방식 mRNA 백신 극저온 저장용기 제작
김기환(Kihwan kim),문정민(Jeongmin Mun),김한영(Hanyoung Kim),김유빈(Yubin Kim),백정현(Jeonghyeon Baek),김석호(Seokho Kim) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.05
In particular, as the mRNA vaccine becomes a major preventive vaccine in the case of COVID-19, the transportation method is being studied to meet global demand. For example, recently developed as a COVID-19 vaccine, Pfizer vaccines should be stored in the temperature range of -70℃, and similar vaccines should also be stored a -30 ℃ or below. However, existing cold storage systems are too high cost to apply storage systems below -30 ℃ and are difficult to apply in transportation. In this study, storage of direct injection using liquid nitrogen was manufactured and maintaining temperature of demanded target. In addition, vaccine storage containers were designed with considering thermal insulation, manufactured, and performance evaluations were implemented.
1D copper(II) and zinc(II) coordination polymers containing an unusual twisted oxalate bridge
Kim, Ju An,Park, Hanyoung,Kim, Ju Chang,Lough, Alan J.,Pyun, Sang Yong,Roh, Jungyun,Lee, Byung Min Elsevier 2008 Inorganica chimica acta Vol.361 No.7
<P><B>Graphical abstract</B></P><P>Two new copper(II) complexes, Cu(<B>L1</B>)(ClO<SUB>4</SUB>)<SUB>2</SUB> (<B>1</B>) and {[(μ-oxalate)Cu(<B>L1</B>)]·5H<SUB>2</SUB>O}<SUB><I>n</I></SUB> (<B>2</B>), and a zinc(II) complex {[(μ-oxalate)Zn(<B>L2</B>)]·3H<SUB>2</SUB>O·0.5DMF}<SUB><I>n</I></SUB> (<B>3</B>) (<B>L</B>=3,14-dimethyl-2,6,13,17-tetraazatricyclo[14,4,0<SUP>1.18</SUP>,0<SUP>7.12</SUP>]docosane), have been synthesized and characterized by X-ray crystallography. In <B>1</B>, the ligand conformation is planar, and the octahedral coordination about the copper(II) ion is completed by weakly interacting ClO4- ions. In <B>2</B> and <B>3</B>, bridging oxalate ligands coordinate to copper(II) or zinc(II) ions in an unusual twisted bis-monodentate (<I>trans</I>-1,1′-bicoordination) mode. The rigidity and steric hindrance of the macrocycles <B>L1</B> and <B>L2</B> by the introduction of two cyclohexane rings and methyl groups on a cyclam (1,4,8,11-tetraazacyclotetradecane) skeleton cause the bridging oxalate ligands to adopt such unusual geometries in <B>2</B> and <B>3</B>.</P><ce:figure></ce:figure> <P><B>Abstract</B></P><P>Two new copper(II) complexes, Cu(<B>L1</B>)(ClO<SUB>4</SUB>)<SUB>2</SUB> (<B>1</B>), {[(μ-oxalate)Cu(<B>L1</B>)]·5H<SUB>2</SUB>O}<SUB><I>n</I></SUB> (<B>2</B>), and a zinc(II) complex, {[(μ-oxalate)Zn(<B>L2</B>)]·3H<SUB>2</SUB>O·0.5DMF}<SUB><I>n</I></SUB> (<B>3</B>) (<B>L</B>=3,14-dimethyl-2,6,13,17-tetraazatricyclo[14,4,0<SUP>1.18</SUP>,0<SUP>7.12</SUP>]docosane), have been synthesized and characterized by X-ray crystallography. In <B>1</B>, the ligand conformation is planar, and the octahedral coordination about the copper(II) ion is completed by weakly interacting ClO4- ions. In <B>2</B> and <B>3</B>, bridging oxalate ligands coordinate to copper(II) or zinc(II) ions in an unusually twisted bis-monodentate (<I>trans</I>-1,1′-bicoordination) mode.</P><P>The rigidity and steric hindrance of macrocycles <B>L1</B> and <B>L2</B> by the introduction of two cyclohexane rings and methyl groups on a cyclam (1,4,8,11-tetraazacyclotetradecane) skeleton cause the bridging oxalate ligands to adopt such unusual geometries in <B>2</B> and <B>3</B>.</P>
Hope in the Depths of Despair: Theorizing About Hope in the Fear Appeal Context
김한영(Hanyoung Kim),한정엽(Jeong Yeob Han) 한국헬스커뮤니케이션학회 2021 헬스커뮤니케이션연구 Vol.20 No.1
본 연구는 병행 과정 확장 모델 (Extended Parallel Process Model) (Witte, 1992)의 구성 요소들과 명제를 고려하여 공포 소구 메시지를 읽는 동안 긍정적 감정인 희망은 어떤 조건에서 일어나며, 그 결과는 무엇인지 탐구하였다. 이 연구는 희망 유발의 메커니즘을 실증적으로 알아보기 위해 생식기 혹과 HPV 예방접종에 관한 온라인 실험 연구를 진행하였다. 참가자들은 먼저 HPV 감염 및 생식기 혹의 위험에 관련된 정보에 노출된 다음, HPV 예방 접종의 효과에 대한 정보를 접하였다. 실험 결과, 지각된 효능감(perceived efficacy)의 희망에 대한 긍정적 효과는 지각된 위협(perceived threat) 수준이 높을수록 더 크게 나타났다. 또한 유발된 희망은 참가자들의 자기 보호적 행동 의도를 긍정적으로 예측하였다. 지각된 효능감이 자기 보호적 행동 의도에 미치는 영향은 희망에 의해 매개되었으며, 이러한 매개 효과는 지각된 위협의 수준이 높을수록 더 컸다. 본 논문의 결과는 공포 호소 설득 과정의 메커니즘을 설명하는 중요한 정서적 구성 요소로 희망을 고려할 필요성을 제시한다. The present article investigates the antecedent and consequence of hope arousal over the course of processing a fear appeal message by considering constructs and propositions of the extended parallel process model (Witte, 1992). In order to empirically test the mechanism through which hope is produced, this study employed an online experimental study concerning genital warts and HPV vaccination. In the experiment, participants first attended to threat information about HPV infection and genital warts, and then read efficacy information about the effectiveness of HPV vaccination. Results revealed that the impact of perceived efficacy on hope was greater when perceived threat level was higher. Furthermore, evoked hope predicted participants’ intention to adopt a self-protective behavior. The effect of perceived efficacy on intention was mediated by hope, and this mediation effect was greater when a level of perceived threat was higher. The results of this article demonstrate that the emotion of hope needs to be considered as an important affective construct explaining a potential mechanism underlying the persuasive process of fear appeals.