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Jaemin Kim(Jaemin Kim),Hyoung Seok Kim(Hyoung Seok Kim),Su Jin Yoo(Su Jin Yoo),Moon Jung Choi(Moon Jung Choi),Youngju Lew(Youngju Lew),Jong Woo Kim(Jong Woo Kim),Han Joo Cho(Han Joo Cho) 대한안과학회 2022 Korean Journal of Ophthalmology Vol.36 No.5
Purpose: To determine the efficacy of immediate pars plana vitrectomy as the primary treatment for acute endophthalmitis in patients with a visual acuity (VA) of hand motion (HM) or better. Methods: A total of 149 patients who were referred to a single center for acute endophthalmitis after cataract surgery over the 13-year study period were retrospectively analyzed. Only patients presenting with a VA of at least HM were included. Patients were initially treated with either primary vitrectomy or intravitreal antibiotic injection alone, and their visual outcomes and reintervention rates after initial treatment were compared. Results: There was no significant difference in the proportion of good (final VA ≥20 / 40) and poor (VA ≤ counting finger) visual outcomes between the groups. However, subgroup analysis of patients with a VA of HM (92 eyes) showed that the incidence of reintervention (14 of 72 eyes [19.4%] vs. 9 of 20 eyes [45.0%]) and poor visual outcomes (10 of 72 eyes [13.9%] vs. 8 of 20 eyes [40.0%]) were lower after prompt vitrectomy than after intravitreal antibiotic injection alone (p = 0.019 and p = 0.022, respectively). For those with a VA of at least counting finger, no significant difference was observed between the groups. Conclusions: For patients with endophthalmitis presenting with a VA of HM, performing a prompt vitrectomy reduced the incidence of reintervention and poor visual outcomes than the administration of intravitreal antibiotics alone. Our results suggest that primary vitrectomy for patients with endophthalmitis presenting with a VA of HM could be more beneficial than intravitreal antibiotic injection alone.
JaeMin Song,YoungEun Jung,JoonHyuk Park,MoonDoo Kim,MinSeok Cheon,ChangIn Lee 대한신경정신의학회 2017 PSYCHIATRY INVESTIGATION Vol.14 No.4
Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS) syndrome is associated with severe skin eruptions, fever, hematological abnormalities, and multi-organ involvement. Although aromatic anticonvulsant drugs have been frequently associated with the manifestation of DRESS syndrome, its induction following treatment with nonaromatic anticonvulsants, such as valproate, has rarely been reported. Moreover, there are limited data regarding the development of neosensitization related to chemically unrelated drugs following an episode of DRESS syndrome. Here, a case of neosensitization to multiple drugs is described. The present case report describes a female patient who experienced neosensitization to amoxicillin, olanzapine, and quetiapine following the manifestation of DRESS syndrome induced by valproate.
Multifunctional Green Solvent for Efficient Perovskite Solar Cells
Jaemin Cho,Beomsoo Kim,Seokjoo Ryu,Alan Jiwan Yun,Bumjin Gil,Jiheon Lim,Jihyun Kim,Jinhyun Kim,Byungwoo Park 대한금속·재료학회 2023 ELECTRONIC MATERIALS LETTERS Vol.19 No.5
Organometal trihalide perovskite has recently been considered as one of the leading candidates to achieve highly effi cient perovskite solar cells (PSCs). However, current PSC procedures commonly rely on the large volume of highly toxic halogenated or highly fl ammable solvents which are not favorable for the large-scale commercialization of PSCs. Herein, we employ nontoxic and nonhalogenated salicylaldehyde from the buckwheat as a both nonpolar (antisolvent) and polar (posttreatmentdissolving) solvent for the multifunctional purpose. Salicylaldehyde has a semipolar characteristic due to the hydroxyl group (–OH) attached to the benzene ring, enabling it to utilize both polar and nonpolar solvents in the PSCs fabrications. As a result, the PSC using green solvent achieved a power conversion effi ciency (PCE) up to 20.23%. Encapsulated devices retained over 80% of their initial PCE, after ~ 750 h of constant 1-sun illumination, and after ~ 1100 h under 60 °C heat. Overall, this work demonstrates that salicylaldehyde can be an alternative solvent for green and effi cient fabrication in the PSC.
A CONSERVATIVE NUMERICAL METHOD FOR THE CAHN-HILLIARD EQUATION IN COMPLEX DOMAINS
Jaemin Shin,Darae Jeong,Junseok Kim 한국산업응용수학회 2011 한국산업응용수학회 학술대회 논문집 Vol.6 No.1
We propose an efficient finite difference scheme for solving the Cahn-Hilliard equation with a variable mobility in complex domains. Our method employs a type of unconditionally gradient stable splitting discretization. We also extend the scheme to compute the Cahn-Hilliard equation in arbitrarily shaped domains. We prove the mass conservation property of the proposed discrete scheme for complex domains. The resulting discretized equations are solved using a multi grid method. Numerical simulations are presented to demonstrate that the proposed scheme can deal with complex geometries robustly. Furthermore, the multigrid efficiency is retained even if the embedded domain is present.
Asymmetric diversity modulation scheme in wireless fading relay channels
Jaemin Han,Eunsung Oh,Hyungsik Ju,Daesik Hong IEEE 2009 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS Vol.8 No.7
<P>In this paper, we propose an asymmetric diversity modulation (ADM) scheme for a single-source relay system that utilizes the relay's higher transmission ability as a form of diversity. To achieve this, the proposed method transmits multiple source bits over a high-order modulating relay as a way to provide additional time diversity. The spatial and time diversity then undergo 'bit'-based combining at the destination. Using the proposed 'bit'-based channel combining method, we derive the theoretical bit error rate (BER) for such a system. Moreover, we investigate the fact that the proposed scheme shows a performance trade-off between bit power and time diversity resulting from the reduced bit power caused by a high-order modulating relay.</P>
Development of analytical technology for cryogenic temperature ATF fluidity
Jaemin Seo(서재민),Jisun Lee,Yasuo Yabuzaki,Akira Tsuchida,Yuuta Yamanashi 한국자동차공학회 2015 한국자동차공학회 학술대회 및 전시회 Vol.2015 No.11
Transmissions are operated by oil pressure, but ATF viscosity is going to increase in the cryogenic temperature, and oil pressure control becomes difficult. It makes the fluidity of ATF even worse to reduce the internal space by downsizing of Transmission. Therefore, a study on the fluid flow in the cryogenic temperature is a critical issue for transmission design. In this paper, it will introduce the improvement of oil-pressure by visualization and optimization.