Highly efficient catalytic systems based on Pd-coated microbeads

Lim, Jin Hyun,Cho, Ahyoung,Lee, Seung Hwan,Park, Bumkyo,Kang, Dong Woo,Koo, Chong Min,Yu, Taekyung,Park, Bum Jun Elsevier 2018 APPLIED SURFACE SCIENCE - Vol.429 No.-

<P><B>Abstract</B></P> <P>The efficiency of two prototype catalysis systems using palladium (Pd)-coated microparticles was investigated with regard to the recovery and recyclability of the catalytic particles. One such system was the interface-adsorption method, in which polymer particles coated with Pd nanoparticles strongly and irreversibly attach to the oil-water interface. Due to the irreversible adsorption of the catalytic particles to the interface, particle loss was completely prevented while mixing the aqueous solution and while collecting the products. The other system was based on the magnetic field-associated particle recovery method. The use of polymeric microparticles containing Pd nanoparticles and magnetite nanoparticles accelerated the sedimentation of the particles in the aqueous phase by applying a strong magnetic field, consequently suppressing drainage of the particles from the reactor along the product stream. Upon multiple runs of the catalytic reactions, it was found that conversion does not change significantly, demonstrating the excellent recyclability and performance efficiency in the catalytic processes.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Pd-coated PS particles irreversibly attached to the oil-water interface. </LI> <LI> Particle adsorption to the interface improved recyclability of the catalytic particles. </LI> <LI> Pd-MNP-PS particles were efficiently responsive under magnetic field. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

한중 번역에서의 인칭대명사 주어 처리 양상 대조 ― 소설 《프라자호텔》을 중심으로

임소정 ( Lim Sojeong ),이아형 ( Lee Ahyoung ) 한국중국어문학회 2024 中國文學 Vol.118 No.-

한국어와 중국어는 대표적인 고맥락 언어로 분류된다. 고맥락 언어는 비언어적 신호 및 발화 맥락에 대한 의존성이 높기 때문에 문장 성분을 일일이 명시적으로 드러내기보다는 편의상 함축하고 생략하는 특징을 보인다. 그러나 동일한 고맥락 언어라고 하여 한국어와 중국어의 문장 성분의 생략 양상이 동일하게 나타난다고 보기는 어려울 것이다. 이러한 관점에 착안하여 본 연구는 한국어(출발어)의 인칭대명사 주어가 중국어(도착어)로 번역되는 양상을 언어학적 관점에서 비교 대조하였으며, 한국어에서 ‘명시된 주어’와 ‘생략된 주어’가 각각 중국어에서는 어떻게 처리되는지를 ‘A명시→B명시’, ‘A명시→B생략’, ‘A생략→B명시’, ‘A생략→B생략’의 네 가지 유형으로 분류하여 면밀하게 분석하였다. 본 연구의 분석 대상인 한국 소설 《프라자호텔》은 인칭대명사 주어의 사용 양상과 관련하여 영어, 프랑스어, 일본어 등 다양한 외국어로의 A-B 번역 양상 연구가 이미 진행된 바 있기에, 본 연구를 통해 세계 언어 속에서의 중국어의 좌표를 확인해 볼 수 있었다는 점에서도 의의가 있다고 판단된다. Korean and Chinese, as prototypical high-context languages, rely heavily on nonverbal cues and shared situational knowledge. While both utilize implication and omission, their strategies for processing sentence components, particularly person subject pronouns, diverge significantly. This study delves into the translation of Korean person pronouns into Chinese, offering a comprehensive analysis of how “overtly expressed subjects” and “implicitly omitted subjects” in Korean are rendered in Chinese. It examines how Chinese translations handle pronoun use in Korean texts, classified into four categories: overt → overt, overt → omitted, omitted → overt, and omitted → omitted. Focusing on the translation of the Korean novel Plaza Hotel, this research contributes to a broader understanding of Chinese’s position within the global linguistic landscape by building upon existing A-B translation studies exploring languages like English, French and Japanese.

보호대상 아동 주거 특성이 아동의 일상생활과 발달에 미치는 영향 - 아동양육시설, 공동생활가정, 청소년 쉼터 비교 -

임세희(Lim, Se Hee),권지성(Kwon, Ji Sung),전수아(Jeon, Suah),이아영(Lee, Ahyoung) 한국사회복지학회 2023 한국사회복지학 Vol.75 No.2

정신 건강 모니터링을 위한 생체신호 기반 VR 치료 플랫폼

임예슬(Yeseul Lim),차재욱(Jaewook Cha),신지은(Jieun Shin),최아영(Ahyoung Choi) 한국정보과학회 2020 한국정보과학회 학술발표논문집 Vol.2020 No.7

의미연결망분석을 통한 스마트워치 사용자의 지각된 혜택과 비용에 대한 연구: 애플워치를 중심으로

이유림 ( Lee Yu Lim ),정민지 ( Jung Minji ),김아영 ( Kim Ahyoung ),박인형 ( Park In-hyoung ),정재은 ( Chung Jae-eun ) 한국소비자학회 2019 소비자학연구 Vol.30 No.6

본 연구는 소비자가 스마트워치를 사용하며 경험하는 혜택과 비용의 내용과 구조를 파악하고 기존연구에서 제시한 제품수용 이전의 지각된 혜택과 비용과 어떠한 차이점이 있는지를 알아보고자 하였다. 소비자가 경험하는 혜택과 비용의 대상을 스마트워치 기기와 어플리케이션으로 분류하였으며, 혜택은 효용적 혜택과 쾌락적 혜택을 포함하고 비용은 인지적 비용과 감정적 비용으로 구분될 것을 제안하였다. 이를 살펴보기 위해 국내에 출시된 스마트워치제품 가운데 애플워치를 사용한 경험이 있는 소비자가 작성한 텍스트 데이터를 소셜미디어에서 수집하고 R을 이용하여 텍스트 빈도분석, 군집분석 그리고 의미연결망분석을 실시하였다. 본 연구의 주요 결과는 다음과 같다. 소비자가 애플워치에 대해 느끼는 혜택과 비용의 대상은 ‘디자인 및 엑세서리’와 ‘부품 및 사후서비스’를 포함하는 기기 측면과 ‘생산성 및 음악 어플리케이션’과 ‘신체활동 관련 어플리케이션’을 포함하는 어플리케이션 측면으로 분류되었다. 의미연결망분석 결과 소비자는 착용감, 배터리 용량, 심미성 등에서 혜택과 비용을 동시에 경험하고 있었으며, 스마트워치의 주요 기능으로 제시되었던 신체활동 추적 어플리케이션으로 인해 신체상태 정보를 제공받거나 활동량을 증가하도록 동기를 부여받고 있었다. 반면 어플리케이션이 제대로 작동하지 않아 불편함을 경험하는 비용이 드러났으며 이러한 불편성과 편리성은 애플워치 사용경험으로 인한 혜택 및 비용의 내용을 구성하는 대표적인 메시지인 것으로 나타났다. 또한 기존연구에서는 제시되지 않았던 감정적 비용이 나타났으며, 스마트워치 수용 이전의 주요위험으로 간주되었던 프라이버시 및 개인정보 침해에 관련된 비용은 드러나지 않았다. 본 연구를 통해 스마트워치수용 이후 실제로 이를 사용하는 과정에서 경험하는 소비자의 혜택과 비용이 무엇인지 파악함으로써 어떠한 부분을 강화 및 보완해야 할지 실마리를 얻어 소비자의 일상과 가치에 부합하는 스마트워치를 개발하는데 도움이 될 것으로 기대된다. The purpose of this study is to examine smart watch consumers’ benefits and costs derived from the actual product experiences and how these benefits and costs are different from perceived benefits and costs before the product adoption. Objects of benefits and costs were classified into smart watch device and its application. The study suggests that the benefits include utilitarian and hedonic benefits, and the costs include cognitive and affective costs. In order to examine consumers’ opinion about smart watch experience, data written by Applewatch consumers were crawled from social media including Twitter, Facebook, and online community. Term frequency analysis, clustering analysis and semantic network analysis were conducted to understand contents and structure of the benefits and costs. The major findings are as follows. We found that objects of benefits and costs were divided into device, including ‘design and accessory’ and ‘component and after-sales service,’ and application, including ‘productivity and music application’ and ‘physical activity application.’The results of semantic network analysis showed that consumers gained both benefits and costs from wearability, battery durability and appearance. As suggested by extant literature, consumers were provided physical information and were motivated to exercise. On the other hand, they actually inconvenienced by systematic errors of various applications. In addition, the results found that affective costs which were overlooked in previous research. However, privacy risks which was proved as a major factor of decreasing intention to adopt smart watch was not revealed. The current study provides in-depth understanding of smart watch consumers’ benefits and costs from real-life product experience. It also suggests managerial implications to smart watch manufacturers regarding what they should strengthen and improve to enhance consumers’ satisfaction.

Polypropylene Compounding Compositions for Fabrication of Plastic Honeycomb Foundation

Seung Goo Lee,Ahyoung Lim,Taek Sung Hwang,Dongwon Kim,김수배,Man-Young Lee,Jong Hee Kim 한국양봉학회 2022 韓國養蜂學會誌 Vol.37 No.2

A current situation on comb foundation suggested the use necessity of semipermanent plastic foundations. The compositions of polypropylene compound were selected for fabricating plastic honeycomb foundations with honeybee affinity and high nesting rate. To further increase the nest making, and effective method of wax coating on a molded foundation that exhibits good adhesion was proposed. The honeycomb foundation obtained from the compounding compositions was regenerable and durable. It was able to prevent environmental pollution due to the existing disposable wax foundation and contribute significantly to the practicality and economic improvement of the environment beekeeping industry.

영화의 선호도 유창성에 영향을 미치는 영화의 처리 유창성 요인에 관한 연구

최낙환,임아영,Choi, Nak Hwan,Lim, Ahyoung 한국마케팅학회 2012 ASIA MARKETING JOURNAL Vol.13 No.4

본 연구는 영화 관람과정에서 이루어지는 관객의 정보처리 용이성과 선호도 유창성의 관계를 살펴보기 위한 것이다. 따라서 본 연구는 영화에 대한 정보처리의 유창성 정도가 영화의 선호도 결정 용이성에 영향을 주다고 가정하고, 선행연구를 토대로 영화의 처리 유창성을 물리적 특성의 식별 용이성인 영화의 지각적 유창성과 표적에 대한 의미 처리 용이성을 의미하는 개념적 유창성으로 구분하였다. 그리고 영화를 구성하는 표현 요소들을 지각적 유창성요인과 개념적 유창성요인으로 구분하여 이들의 영향 관계를 탐색하였다. 본 연구의 결과, 첫째, 영화의 개념적 유창성과 지각적 유창성은 모두 영화의 선호도 유창성에 영향을 주는 것으로 나타났다. 둘째, 소리 표현의 식별성과 배우의 역할 표현 식별성은 영화의 지각적 유창성에 영향을 주지만, 영상 표현의 식별성은 유의하지 않은 것으로 탐색되었다. 마지막으로, 대사 표현의 적합성과 스토리 구성력은 영화의 개념적 유창성에 영향을 주는 것으로 탐색되었다. Recently, as film has been admitted as the artistic merit and higher value-added business, the past studies on film have been lively carried on various fields. Especially, the film business is thought to be value-added business and has explored the causes of influencing spectators. However, there are no researches enough to explain what induces the choice and diffusion of the film. The film is not only hedonic products but also typical example of experiential products. So how to process film formation plays important roles in explaining the procedures of forming preference on the film and the movies spread more widely. But the great part of study of films has been concentrated on exploring hedonic factors of influencing spectator's choice. Until now there is not enough study for the relationship between experiential information processing and film preference. To explain film's preference, our study focuses on preference fluency and processing fluency that can provide an insight for our question about the relationship. In this article, to explain the procedures of processing experiential information and forming preference on the film, our study focuses on finding the relationship between film's processing fluency and film's preference fluency and explores the factors that affect film's processing fluency. To achieve the goal of this study, we distinguish factors of film's conceptual fluency from factors of film's perceptual fluency and explore the paths from the factors to film's preference fluency. The factors which have effects on perceptual fluency are hypothesized to be distinction of image expression, distinction of sound expression, correspondence between actors' image and their role. The factors which have effect on conceptual fluency are supposed to be well-organized story, suitability of lines expression. The experiments in which students were sampled at 'C' university were conducted in 2010 (december). Data collection was proceeded through questionnaires. We test the hypothesized model by using structural equation modeling(Amos 17.0). The fit indices for the model are as follows : x²=416.266(df=213, p=0.00), GFI=0.855, AGFI=0.812, RMSEA =0.069, IFI=O.925, CFI=0.920, TLI=0.905. According to the guidelines, there is evidence that our measurement model fits data. The results of empirical study are as follows. The path from film's perceptual fluency to film's preference fluency is supported(estimate: 0.223, C.R: 2.641). The path from film's conceptual fluency to film's preference fluency is supported(estimate: 0.397, C.R: 4.863). The path from distinction of image expression to film's perceptual fluency is not supported(estimate: 0.113, C.R: 1.665). The path from distinction of sound expression to film's perceptual fluency is supported (estimate: 0.190, C.R: 2.042). The path from correspondence between actors' image and their role to film's perceptual fluency is supported(estimate: 0.686, C.R: 5.566). The path from well-organized story to film's conceptual fluency is supported(estimate: 0.396, C.R: 4.023). The path from suitability of lines expression to film's conceptual fluency is supported(estimate: 0.536, C.R: 5.441). Concludingly, our study explored the influencing factors of film's processing fluency inducing film's Preference fluency. First, film's perceptual fluency and film's conceptual fluency have positive effects on film's preference fluency. Second, distinction of image expression is not significant on film's perceptual fluency, but distinction of sound expression and image's correspondence of actors' image and their role have positive effects on film's perceptual fluency. Lastly, well-organized story and suitability of lines expression have positive effects on film's conceptual fluency.

Multifunctional Probiotic and Functional Properties of Lactiplantibacillus plantarum LRCC5314, Isolated from Kimchi

( Seokmin Yoon ),( Hyeokjun Cho ),( Yohan Nam ),( Miri Park ),( Ahyoung Lim ),( Jong-hwa Kim ),( Jaewoong Park ),( Wonyong Kim ) 한국미생물 · 생명공학회 2022 Journal of microbiology and biotechnology Vol.32 No.1

In this study, the survival capacity (acid and bile salt tolerance, and adhesion to gut epithelial cells) and probiotic properties (enzyme activity-inhibition and anti-inflammatory activities, inhibition of adipogenesis, and stress hormone level reduction) of Lactiplantibacillus plantarum LRCC5314, isolated from kimchi (Korean traditional fermented cabbage), were investigated. LRCC5314 exhibited very stable survival at ph 2.0 and in 0.2% bile acid with 89.9% adhesion to Caco-2 intestinal epithelial cells after treatment for 2 h. LRCC5314 also inhibited the activities of α-amylase and α-glucosidase, which are involved in elevating postprandial blood glucose levels, by approximately 72.9% and 51.2%, respectively. Treatment of lipopolysaccharide (LPS)-stimulated RAW 264.7 cells with the LRCC5314 lysate decreased the levels of the inflammatory factors nitric oxide, tumor necrosis factor (TNF-α), interleukin (IL)-1β, and interferon-γ by 88.5%, 49.3%, 97.2%, and 99.8%, respectively, relative to those of the cells treated with LPS alone. LRCC5314 also inhibited adipogenesis in differentiating preadipocytes (3T3-L1 cells), showing a 14.7% decrease in lipid droplet levels and a 74.0% decrease in triglyceride levels, as well as distinct reductions in the mRNA expression levels of adiponectin, FAS, PPAR/γ, C/EBPα, TNF-α, and IL-6. Moreover, LRCC5314 reduced the level of cortisol, a hormone with important effect on stress, by approximately 35.6% in H295R cells. L. plantarum LRCC5314 is identified as a new probiotic with excellent in vitro multifunctional properties. Subsequent in vivo studies may further demonstrate its potential as a functional food or pharmabiotic.

Effectiveness of group cognitive behavioral therapy with mindfulness in end-stage renal disease hemodialysis patients

( Bo Kyung Sohn ),( Yun Kyu Oh ),( Jung-seok Choi ),( Jiyoun Song ),( Ahyoung Lim ),( Jung Pyo Lee ),( Jung Nam An ),( Hee-jeong Choi ),( Jae Yeon Hwang ),( Hee-yeon Jung ),( Jun-young Lee ),( Chun So 대한신장학회 2018 Kidney Research and Clinical Practice Vol.37 No.1

Background: Many patients with end-stage renal disease (ESRD) undergoing hemodialysis (HD) experience depression. Depression influences patient quality of life (QOL), dialysis compliance, and medical comorbidity. We developed and applied a group cognitive behavioral therapy (CBT) program including mindfulness meditation for ESRD patients undergoing HD, and measured changes in QOL, mood, anxiety, perceived stress, and biochemical markers. Methods: We conducted group CBT over a 12-week period with seven ESRD patients undergoing HD and suffering from depression. QOL, mood, anxiety, and perceived stress were measured at baseline and at weeks 8 and 12 using the World Health Organization Quality of Life scale, abbreviated version (WHOQOL-BREF), the Beck Depression Inventory II (BDI-II), the Hamilton Rating Scale for Depression (HAM-D), the Beck Anxiety Inventory (BAI), and the Perceived Stress Scale (PSS). Biochemical markers were measured at baseline and after 12 weeks. The Temperament and Character Inventory was performed to assess patient characteristics before starting group CBT. Results: The seven patients showed significant improvement in QOL, mood, anxiety, and perceived stress after 12 weeks of group CBT. WHOQOL-BREF and the self-rating scales, BDI-II and BAI, showed continuous improvement across the 12-week period. HAM-D scores showed significant improvement by week 8; PSS showed significant improvement after week 8. Serum creatinine levels also improved significantly following the 12 week period. Conclusion: In this pilot study, a CBT program which included mindfulness meditation enhanced overall mental health and biochemical marker levels in ESRD patients undergoing HD.

CYP3A5*3 Genotype Associated With Intrasubject Pharmacokinetic Variation Toward Tacrolimus in Bioequivalence Study

Yong Chung, Jae,Jung Lee, Yoon,Bok Jang, Seong,Ahyoung Lim, Lay,Soo Park, Min,Hwan Kim, Kyung Lippincott Williams Wilkins, Inc. 2010 Therapeutic drug monitoring Vol.32 No.1

Tacrolimus is metabolized by CYP3A and has highly variable pharmacokinetics. To study the factors contributing to this high variability in pharmacokinetics and to investigate the possibility of genotype-specific clinical applications, the effect of differing CYP3A5 genotypes on the intrasubject coefficients of variation for tacrolimus was investigated. Genotyping for CYP3A5*3 was performed in healthy volunteers who had previously participated in the pharmacokinetic study of 2 tacrolimus formulations with a 2 × 2 cross-over design. Intrasubject coefficients of variation calculated from analysis of variation in CYP3A5*1/*1+*1/*3 (n = 16) and CYP3A5*3/*3 (n = 13) groups were compared. The intrasubject CVs of AUClast and Cmax in the CYP3A5*3/*3 group were about 41.1% and 52.4% greater than those in the CYP3A5*1*1+*1/*3 group. The estimated total sample size for the bioequivalence study of tacrolimus with a 2 × 2 cross-over design was increased by 93.3% for AUClast (n = 30 versus 58) and 121.4% for Cmax (n = 28 versus 62) in the CYP3A5*3/*3 group compared with the CYP3A5*1/*1+*1/*3 group. The intraindividual variability of tacrolimus PK parameters may be associated with the CYP3A5 genotype. We propose that genotyping for CYP3A5 will provide a more efficient approach for bioequivalence designs and therapeutic drug monitoring.