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Choi, Dukhyun,Choi, Min-Yeol,Choi, Won Mook,Shin, Hyeon-Jin,Park, Hyun-Kyu,Seo, Ju-Seok,Park, Jongbong,Yoon, Seon-Mi,Chae, Seung Jin,Lee, Young Hee,Kim, Sang-Woo,Choi, Jae-Young,Lee, Sang Yoon,Kim, Jo WILEY-VCH Verlag 2010 ADVANCED MATERIALS Vol.22 No.19
<B>Graphic Abstract</B> <P>The cover shows an image of fully rollable transparent nanogenerators synthesized using chemical vapor deposition grown large-scale graphene sheets as transparent electrodes and piezoelectric ZnO nanorod arrays. Sang-Woo Kim, Jae-Young Choi, and co-workers report on p. 2187 the electrical and structural stability of the nanogenerators, with excellent charge scavenging performance under external mechanical loads such as bending and rolling. This study shows that graphene-based nanogenerators are very promising for self-powered rollable transparent device applications. <img src='wiley_img_2010/09359648-2010-22-19-ADMA201090066-content.gif' alt='wiley_img_2010/09359648-2010-22-19-ADMA201090066-content'> </P>
Seo, Nu-Ri,Ji, Min-Kyung,Park, Sang-Won,Lee, Kwangmin,Bae, Jung-Chan,Yun, Kwi-Dug,Park, Chan,Oh, Gye-Jeong,Kim, Ji-Hyun,Lim, Hyun-Pil American Scientific Publishers 2017 Journal of Nanoscience and Nanotechnology Vol.17 No.4
<P>Porphyromonas gingivalis (P. gingivalis) is one of main bacteria that adheres to the surface of dental implants and causes peri-implantitis. The purpose of this study was to observe the surface characteristics of titanium processed with either titanium nitride (TiN) sputter coating or plasma nitriding and to evaluate the subsequent adhesion of P. gingivalis. Specimens were divided into three groups: commercially pure (CP) titanium (control group), TiN sputter-coated titanium (group S), and plasma-nitrided titanium (group P). Surface characteristics such as roughness, morphology, and the formation of a thin TiN film or a nitriding layer were assessed. Adhesion of P. gingivalis in the three groups was determined by means of the crystal violet staining assay, and results were compared with one-way ANOVA, with post hoc comparison using Tukey's test (alpha = 0.05). Surface roughness values for the control group, group S, and group P were 0.08 +/- 0.02 mu m, 0.19 +/- 0.04 mu m, and 0.13 +/- 0.02 mu m, respectively. In group S, the TiN layer was 1.36 +/- 0.1 mu m thick, and nitrogen was detected on the surface of the specimens in group P, confirming formation of a nitrided layer. The level of adhesion in group P was significantly higher than that in the control group and in group S (p < 0.05), but there was no significant difference between the control group and group S. Within the limitations of this study, TiN sputter coating did not affect adhesion of P. gingivalis on the titanium surface, whereas adhesion was increased on the plasma-nitrided titanium surface.</P>
FC 1-8 : Analysis of dermatologic consultations in neuropsychiatric inpatients
( Sang Hyeon Hwang ),( Ju Yeon Choi ),( Han Saem Kim ),( Jung In Kim ),( Jung Min ),( Hyun Min Seo ),( Heun Joo Lee ),( Yoon Hwan Kim ),( Ho Joo Jung ),( Jae Hui Nam ),( Ji Hye Park ),( Ga Young Lee ) 대한피부과학회 2014 대한피부과학회 학술발표대회집 Vol.66 No.2
Background: Many patients seeking treatment for skin disorders have an underlying psychiatric problem that either causes or exacerbates a skin complaint and a need for dermatological expert opinion is increased. Objectives: The purpose of this study was to analyze the patterns and to quantify the dermatologic consultations referred by the department of neuropsychiatry. Methods: We retrospectively studied the data from 268 inpatients referred by department of neuropsychiatry for a dermatologic consultation during a 5-year period in a tertiary hospital. Results: The percent of patients who were referred by the department of neuropsychiatry and consulted by the department of dermatology was 19.5%. The most frequent age group was those in their 4th decade of life (26.5%) and the male to female ratio was 1:1.88. Bipolar disorder was the most common underlying neuropsychiatric disorder and infectious diseases were the most common dermatoses. Consultations for dermatologic manifestations unrelated to systemic or neuropsychiatric disorder were the most common reason for consultation. Neuropsychiatric medication-related adverse reactions were reported in 10.5% and dermatoses exacerbated by emotional stress accounted for 12.3%. Conclusion: This study revealed the distribution of skin disorders in patients referred by department of neuropsychiatry for dermatologic consultation. Furthermore, it could be helpful as an educational material to assist cooperation between dermatology and neuropsychiatry.
Seo, Sung Eun,Park, Chul Soon,Park, Seon Joo,Kim, Kyung Ho,Lee, Jiyeon,Kim, Jinyeong,Lee, Sang Hun,Song, Hyun Seok,Ha, Tai Hwan,Kim, Jae-Hyuk,Yim, Hee Won,Kim, Hyoung-il,Kwon, Oh Seok The Royal Society of Chemistry 2020 Journal of Materials Chemistry A Vol.8 No.4
<P>A multifunctional assay with up-/down-conversion (UC/DC) nanohybrids which enables the detection and real-time tracking of hazardous molecules has been developed for use in the field of photoluminescence (PL) point-of-care testing due to its cost and convenience. In particular, innovative approaches such as dual or multimodal imaging and detection under only a single-photon pulse system are highly difficult owing to the issues of device simplification and miniaturization. In this work, we first demonstrated single-photon-driven UC/DC dual-modal PL nanohybrids and showed their high performance in <I>in vivo</I> mercury detection and real-time tracking in a mussel simultaneously. Specifically, UC/DC nanohybrids capable of being stimulated by a single photon were presented <I>via</I> a facile and versatile strategy by combining DC fluorophores for heavy metal ion screening with triplet-triplet annihilation upconversion (TTA-UC) nanocapsules for real-time tracking. By adopting the advantages of the structural transformation of DC fluorophores and highly stable TTA-UC nanocapsules, the outstanding monitoring performance of a standard heavy metal ion (<I>i.e.</I> Hg<SUP>2+</SUP>) was achieved by a dual-modal PL assay with nanohybrids, exhibiting ultra-sensitivity (under 1 nM) and high-selectivity. Interestingly, their application in the real world was also remarkable in screening and tracking of mercury in mussels. This single-photon-driven UC/DC convergence system will provide powerful analytical methodologies for target detection and real-time tracking <I>in vivo</I> and will attract widespread attention from researchers in the fields of PL nanomaterials and fluorophores.</P>