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Room Temperature Preparation of Poly-Si Thin Films by IBE with Substrate Bias Method
Cho, Byung-Yoon,Yang, Sung- Chae,Han, Byoung-Sung,Lee, Jung-Hui,Yatsui Kiyoshi The Korean Institute of Electrical and Electronic 2005 Transactions on Electrical and Electronic Material Vol.6 No.2
Using intense pulsed ion beam evaporation technique, we have succeeded in the preparation of poly crystalline silicon thin films without impurities on silicon substrate. Good crystallinity and high deposition rate have been achieved without heating the substrate by using lEE. The crystallinity of poly-Si film has been improved with the high density of the ablation plasma. The intense diffraction peaks of poly-Si thin films could be obtained by using the substrate bias system. The crystallinity and the deposition rate of poly-Si thin films were increased by applying (-) bias voltage for the substrate.
Lee, Yong Hui,Im, Sang Hyuk,Rhee, Jae Hui,Lee, Jong-Heun,Seok, Sang Il American Chemical Society 2010 ACS APPLIED MATERIALS & INTERFACES Vol.2 No.6
<P>The CdS-sensitized solar cells (CdS-SSC) were fabricated by spray pyrolysis deposition (SPD) method. The performance of the cells was greatly improved through post-treatments that included thermal oxidation at 500 °C for 30 min in an air atmosphere and subsequent chemical etching by 40 mM aqueous HCl solution at room temperature for 30 min, as compared to as-deposited CdS-SSC. The CdS-SSC in a I<SUP>−</SUP>/I<SUB>3</SUB><SUP>−</SUP> electrolyte system was resulted in the improvement of <I>J</I><SUB><I>sc</I></SUB> (3.3 → 5.2 mA/cm<SUP>2</SUP>), V<SUB>oc</SUB> (697 → 758 mV), FF (41.4% → 46.9%), and (0.95% → 1.84%). Similarly, the efficiency of CdS-SSC in a noncorrosive polysulfide electrolyte system was also enhanced by the proposed thermal oxidation and etching process. The increase in the cell efficiency is attributed to the reduced charge recombination among sensitizer themselves through the mitigation of overaggregated CdS sensitizers deposited by SPD.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/aamick/2010/aamick.2010.2.issue-6/am100169t/production/images/medium/am-2010-00169t_0003.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/am100169t'>ACS Electronic Supporting Info</A></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/am100169t'>ACS Electronic Supporting Info</A></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.
Lee, Hui-Young,Cho, Sun-A,Lee, In-Soo,Park, Jong-Hwan,Seok, Seung-Hyeok,Baek, Min-Won,Kim, Dong-Jae,Lee, Seok-Ho,Hur, Sook-Jin,Ban, Sang-Ja,Lee, Yoo-Kyoung,Han, Yang-Keum,Cho, Young-Keun,Park, Jae-Hak Oxford University Press 2007 FEMS IMMUNOLOGY AND MEDICAL MICROBIOLOGY Vol.51 No.2
<P>The attenuation and immunoenhancing effects of rpoS and phoPSalmonella enterica serovar strain Typhi (Salmonella typhi) mutants have not been compared. Here, three S. typhi deletion mutants (phoP, rpoS, and rpoS-phoP double mutant) are constructed and these mutants are characterized with respect to invasiveness, virulence, and protective immune response compared with wild-type Ty2. It was found that phoP and phoP-rpoS deletion mutants are less invasive to HT-29 cells than the wild-type Ty2 and the rpoS single-deleted strain. The LD(50) of immunized mice was higher for phoP than for rpoS mutants, and the highest for the phoP-rpoS double mutant. In addition, all S. typhi mutants showed an increase in the specific serum IgG levels and T-cell-mediated immunity, and showed equal protection abilities against a wild-type Ty2 challenge after two rounds of immunization in BALB/c mice. It is concluded that phoP genes appear to play a more important role than rpoS genes in both cellular invasion and virulence of S. typhi, but not in immunogenicity in mice. Furthermore, the data indicate that the phoP-rpoS double mutant may show promise as a candidate for an attenuated typhoid vaccine.</P>
Hui Joon Park,Seung Min Hong,Sang-Soo Lee,Junkyung Kim,Min Park IEEE 2008 IEEE TRANSACTIONS ON ADVANCED PACKAGING Vol.31 No.2
<P>A new type of composite filler mechanically treated with multi-walled carbon nanotubes (MWNTs) and (BT) particles was prepared to produce higher dielectric properties in the composite. The hybrid film fabricated by incorporating these composite fillers in an epoxy matrix had a high dielectric constant and similar dielectric loss as compared to the composite which contained neat BT particles. The dielectric properties of these hybrid films were found to be dependent on both the content of MWNTs and mechanical processing time. Results suggest that this novel hybrid film composed of the composite filler and the epoxy matrix can be used for embedded capacitor material.</P>
Gold Nanoshell-Mediated Photothermal Therapy for Facial Pores
Sang Ju Lee,Jeanne Jung,Seung Hui Seok,김동현 대한의학레이저학회 2019 MEDICAL LASERS Vol.8 No.2
Facial pores are a visible topographic feature of skin surfaces and are generally the enlarged openings of pilosebaceous follicles. Enlarged facial pores can be a significant cosmetic problem, particularly for women. Recently, gold nanoshell-mediated photothermal therapy (PTT) has been reported to be effective in treating recurrent acne. The treatment of enlarged facial pores with gold nanoshell-mediated PTT produced excellent results with no side effects. The two cases reported here demonstrate the possibility of gold nanoshell-mediated PTT as a safe and effective treatment for enlarged facial pores.