One-step Microwave Synthesis of Hierarchical Structured LiFePO4 using Citric Acid

Mihye Wu,Sungho Choi,Yongku Kang,정하균 대한화학회 2014 Bulletin of the Korean Chemical Society Vol.35 No.10

The hierarchical-structured LiFePO4 cathode materials were synthesized by one-step microwave synthesis, and their electrochemical properties were investigated. Addition of citric acid during the reaction lead to the formation of hierarchical structured LiFePO4, which has both nano- and micron-characteristics advantageous for energy density and electrode fabrication. Adjusting the molar ratio of Fe to citric acid enhanced the electrochemical properties of LiFePO4.

IFRS Reconciliation Adjustment and Subsequent Meet or Beat Target Earnings

Mihye Ha,Minjung Kang 한국유통과학회 2019 The Journal of Asian Finance, Economics and Busine Vol.6 No.1

This study analyzed the association between IFRS adjustments, measured with the IFRS reconciliations, and the subsequent meeting of target earnings. IFRS adjustments include the amounts to be adjusted intentionally, as well as the differences in accounting standards. This study estimated intentional IFRS adjustments and analyzed their association with meeting target earnings. As the results of our analysis, meeting target earnings was associated positively with intentional IFRS adjustments for the total assets, was negatively associated with them for current assets, and was positively associated with them for non-current assets. Since understatement of current assets can be realized into earnings in a short period of time, it seems that current assets were underestimated intentionally in order to meet target earnings subsequently. In contrast, it is considered that non-current assets were overestimated to make them more likely to meet target earnings either by increasing the firm size or by improving financial solvency. The results of this study imply that IFRS adjustments are useful to manage earnings for meeting target earnings. Since accounting standards may be established and revised constantly, which adjustments for them may occur, the results on IFRS adjustments are expected to have implications for investors, policy-makers, and standards establishment entities.

Composite System of PLCL Scaffold and Heparin-Based Hydrogel for Regeneration of Partial-Thickness Cartilage Defects

Kim, Mihye,Hong, Bohee,Lee, Jongman,Kim, Se Eun,Kang, Seong Soo,Kim, Young Ha,Tae, Giyoong American Chemical Society 2012 Biomacromolecules Vol.13 No.8

<P>Delivering isolated chondrocytes with matrix is a promising approach to promote the cartilage repair. The present study attempted to combine the advantages of porous scaffold and hydrogel in delivering chondrocytes to partial-thickness cartilage defects. An electrospun, gelatin-incorporated PLCL scaffold mechanically similar to natural cartilage was fabricated, and chondrocytes were seeded using an injectable heparin-based hydrogel for efficient cell seeding. The scaffold/hydrogel composite showed more enhanced expression of chondrogenic genes and production of GAGs than those prepared without hydrogel. In addition, significant cartilage formation showing good integration with surrounding, similar to natural cartilage, was observed by scaffold/hydrogel composite system in partial-thickness defects of rabbit knees while no regeneration was observed in control defects. Although no exogenous chondrogenic factors were added, it was evident that the scaffold/hydrogel composite system was highly effective and better than the scaffold alone system without hydrogel for cartilage regeneration both in vitro and in vivo.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/bomaf6/2012/bomaf6.2012.13.issue-8/bm3005353/production/images/medium/bm-2012-005353_0011.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/bm3005353'>ACS Electronic Supporting Info</A></P>

지방종을 동반한 척추관협착증 환자의 복합한방치료 치험 1예

김미혜 ( Mihye Kim ),한수빈 ( Su-bin Han ),박병학 ( Byunghak Park ),손재민 ( Jaemin Son ),이남우 ( Nam-woo Lee ),한정훈 ( Jeong-hun Han ),강도현 ( Do-hyeon Kang ),민태운 ( Tae-woon Min ),안재서 ( Jae-seo Ahn ),이한솔 ( Hansol Lee 한방재활의학과학회 2020 한방재활의학과학회지 Vol.30 No.4

Spinal epidural lipomatosis is a rare disorder characterized by overgrowth of fat in the extradural space, causing spinal stenosis with compression of the neural elements. This study reports on the effectiveness of Korean medicine treatment on a patient who was diagnosed on lumbar stenosis with lipomatosis. The patient was treated with Korean traditional medicine including pharmacopucture, acupuncture, Chuna manual treatment, and Korean herbal medicine, cupping. Numerical rating scale (NRS), Oswestry disability index (ODI), Euroqol five dimension (EQ-5D) index, lumbar range of motion were used as objective tools for evaluating the patient’s progress. Back NRS decreased from 6 to 3. In the case of lower limbl radiation NRS, 5 was reduced to 3 upon discharge. EQ-5D index also increased from 0.751 to 0.766. For ODI, the score dropped from 26.67 to 24.44 on hospitalization. As a result, clinical improvements were found in a patient. In conclusion, this study shows that Korean medicine treatment can be considered as effective conservative care for spinal stenosis with lipomatosis. (J Korean Med Rehabil 2020;30(4):195-201)

One-step Microwave Synthesis of Hierarchical Structured LiFePO₄ using Citric Acid

Wu, Mihye,Choi, Sungho,Kang, Yongku,Jung, Ha-Kyun Korean Chemical Society 2014 Bulletin of the Korean Chemical Society Vol.35 No.10

The hierarchical-structured $LiFePO_4$ cathode materials were synthesized by one-step microwave synthesis, and their electrochemical properties were investigated. Addition of citric acid during the reaction lead to the formation of hierarchical structured $LiFePO_4$, which has both nano- and micron-characteristics advantageous for energy density and electrode fabrication. Adjusting the molar ratio of Fe to citric acid enhanced the electrochemical properties of $LiFePO_4$.

Stabilization of 11/9-helical α/β-peptide foldamers in protic solvents

Lee, Mihye,Shim, Jihyun,Kang, Philjae,Choi, Moon-Gun,Choi, Soo Hyuk The Royal Society of Chemistry 2016 Chemical communications Vol.52 No.35

<P>alpha/beta-Peptides with alternating alpha-amino acid and cis-2-aminocyclohexanecarboxylic acid (cis-ACHC) residues adopt 11/9-helical conformations, the folding propensity of which decreases as the solvent polarity increases. We report a new cis-ACHC analogue, cis-2-amino-cis-4-methylcyclohexanecarboxylic acid, which significantly stabilizes the 11/9-helix propensity in protic solvents.</P>

중의성 해소에 기여하는 억양단서의 인지적 민감도 연구

김미혜(Kim Mihye),강선미(Kang Sun-Mi),김기호(Kim Kee-Ho) 한국음성학회 2011 말소리와 음성과학 Vol.3 No.4

This experimental study has a goal to explore the perceptual sensitivity to phonetic evidence such as duration, phrase accent, or pause in disambiguation. We argue that the realization of the intonational phrasal boundary at the meaningful grammatical boundary in structurally ambiguous sentences facilitates English native listeners to distinguish the meanings of the ambiguous sentences. Moreover, the duration of the phrase-final syllable, pitch range reset, or phrasal tones also provides listeners with important phonetic evidence in disambiguation. In our perception experiment, however, Korean English learners largely depend on the realization of pause. In the results from the perception experiment, all of the groups showed an increase in the response time from the perception of no pause to pause realization. This means that pause at the phonological phrasal boundary plays a role of facilitator to English native speakers with other prosodic cues such as duration, pitch accent, or phrasal tones, while an absolutely important cue to Korean English learners.

스마트폰 애플리케이션의 지각된 가치와 채택의도에 관한 연구

강성배(Sungbae Kang),채미혜(Mihye Chae) 한국인터넷전자상거래학회 2011 인터넷전자상거래연구 Vol.11 No.4

Recently, one of the biggest issues is the smartphone in the mobile world. Because the smartphone which not only voice service involves as general mobile calling, but also data service provides a variety of online services, such as communications, entertainment, Internet, games, and so on, it is accommodating a lot of changes in both personal life and value. Although there were many studies to be conducted about the user acceptance and behavioral intention of mobile device-related, a study about the user acceptance and adoption behavior of the smartphone which is providing various service is still lacking. The purpose of the study is to investigate the relationship between smartphone applications and value-based adoption intentions of them. And personal innovativeness in the domain of IS helps identify individuals who are likely to intention to use IS innovations earlier than others. As deriving social influence, differentiation of applications and perceived enjoyment, perceived value, personal innovativeness as a perceived factor based on the mobile phone-related research. The findings reveal that consumers’perception of the value of smartphone application is a principal determinant of intention to adopt. Furthermore, the personal innovativeness shows its moderating effects on the perceived value model.

젊은 세대는 매체 동시소비를 왜, 어떻게 하는가?

강미선(Meesun Kang),서미혜(Mihye Seo) SBS 2011 미디어경제와 문화 Vol.9 No.4

대학생은 어느 세대보다 두 매체를 동시에 소비하는 멀티태스킹 활동이 활발하다. 이 연구는 한국과 미국 대학생을 대상으로 매체의 멀티태스킹이 왜, 어떻게 일어나는지를 경험적으로 분석했다. 이 연구에서는 기존연구에서 제시한 매체 동시소비 개념을 재 정의하여, 두 매체는 물론 한 매체 내에서 두 가지 유형의 내용을 소비하는 행동도 포괄하여 분석대상으로 삼았다. 연구가설로 시간관리 가설을 제안하고, 대안적 관점으로 오락 동기 가설을 제안했다. 가설검증 결과 전체적으로 오락 동기 가설이 지지되었으나, 국가를 구분한 결과에서는 한국은 시간관리 가설, 미국은 오락 동기 가설이 신뢰구간의 경계에 있어 추가분석을 실시했다. 국가별로 고유한 매체조합을 파악한 결과 문화권에 따른 차이도 드러났다. 한국은 타인과 상호교류적 내용 소비가 많은 반면, 미국은 개인적 용도의 매체소비가 활발했다. As our media landscape is denser and more integrated, people, especially young adults, tend to consume multiple media options simultaneously (i.e., simultaneous media consumption, SMC). Recognizing the pervasiveness of SMC, the present study investigates why and how young adults consume different media (e.g., TV and Internet) and different media contents (e.g., email and web surfing) at the same time. We propose ‘time management’ and ‘entertainment media use motivation’ as two competing explanations for SMC. Using survey data collected in Korea and USA, this study found that those with strong entertainment motivation showed more SMC behaviors in both countries, supporting the entertainment motivation hypothesis. In contrast, the time management hypothesis was not supported. In addition, when Korean college students consume multiple media simultaneously, they tend to use social-interactive contents (e.g., instant messaging with texting on the phone). On the other hand, American students’ SMC behaviors revolve around individualistic contents of media (e.g., watching TV with surfing Internet). The implications of these findings for media research and media practitioners are discussed.

<i>Granulosicoccus marinus</i> sp. nov., isolated from Antarctic seawater, and emended description of the genus <i>Granulosicoccus</i>

Baek, Kiwoon,Choi, Ahyoung,Kang, Ilnam,Im, Mihye,Cho, Jang-Cheon International Union of Microbiological Societies 2014 International journal of systematic and evolutiona Vol.64 No.12

<P>A Gram-staining-negative, motile by flagella, non-pigmented, poly-β-hydroxybutyrate-producing, strictly aerobic and sphere-shaped bacterium, IMCC3490<SUP>T</SUP>, was isolated from a coastal seawater sample from the Antarctic Peninsula. Optimal growth of strain IMCC3490<SUP>T</SUP> was observed at 20 °C, pH 8.0 and in the presence of 2 % (w/v) NaCl. Phylogenetic analysis using 16S rRNA gene sequences indicated that strain IMCC3490<SUP>T</SUP> belonged to the genus <I>Granulosicoccus</I> in the family <I>Granulosicoccaceae</I>. The strain was closely related to <I>Granulosicoccus antarcticus</I> IMCC3135<SUP>T</SUP> (98.8 % 16S rRNA gene sequence similarity) and <I>Granulosicoccus coccoides</I> Z 271<SUP>T</SUP> (98.5 %). The DNA–DNA relatedness values between IMCC3490<SUP>T</SUP> and type strains of the two species of the genus were far lower than 70 %, which indicated strain IMCC3490<SUP>T</SUP> is a novel genomic species of the genus <I>Granulosicoccus</I>. The major fatty acids of strain IMCC3490<SUP>T</SUP> were summed feature 8 (C<SUB>18 : 1</SUB>ω7<I>c</I> and/or C<SUB>18 : 1</SUB>ω6<I>c</I>) and summed feature 3 (C<SUB>16 : 1</SUB>ω7<I>c</I> and/or C<SUB>16 : 1</SUB>ω6<I>c</I>). The isoprenoid quinone detected was ubiquinone-8 (Q-8) and predominant polar lipids were diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine. The DNA G+C content was 61.0 mol%. On the basis of phylogenetic analyses, DNA–DNA relatedness values and phenotypic data, it is suggested that strain IMCC3490<SUP>T</SUP> represents a novel species of the genus <I>Granulosicoccus</I>, for which the name <I>Granulosicoccus marinus</I> sp. nov. is proposed. The type strain is IMCC3490<SUP>T</SUP> ( = KACC 17483<SUP>T</SUP> = NBRC 109704<SUP>T</SUP>). An emended description of the genus <I>Granulosicoccus</I> is also provided.</P>