HOW DO OUR BRAINS PROCESS SUSTAINABILITY? INVESTIGATING COGNITIVE MECHANISM OF SUSTAINABLE FASHION CONSUMPTION

Hanah Choi,DongHyun Kim,Eun-Ju Lee,Jinghe Han,Kyung Hoon Kim,Eunju Ko 글로벌지식마케팅경영학회 2017 Global Fashion Management Conference Vol.2017 No.07

The global society is overwhelmed by growing social inequality and environmental pollution. Especially, the fashion industry has been linked to hazardous clothing wastes and exploitation of labor in poor countries. We acknowledge that the sustainability philosophy could be an alternative governing principle that can lead us to a better future for the fashion industry. This study investigates brain responses of fashion professionals and consumers as they are presented with sustainable fashion of luxury and SPA brands. Using functional magnetic resonance imaging (fMRI), the whole brain responses of participants were measured and analyzed to reveal how their brain responses differ depending on fashion products’ brand type and certification mark. We build an online education platform for professionals and lay consumers on the subject of sustainable fashion. Brain responses are measured from both groups of professionals and consumers while they are exposed to sustainable fashion products of luxury and SPA brands. A group of subjects watch the online educational program while under the counterpart condition subjects see another video of the same length, unrelated to sustainability. BOLD measures are acquired using Siemens 3T scanner and analyzed using SPM 12 software. We find selective brain activation patterns that can distinguish the educated group from the uneducated ones. The practical implication of this study is that we must do our best to build a sustainability education program which can motivate professionals and consumers effectively, by stimulating both cognitive and affective bases of behavioral change.

Proenkephalin Predicts Organ Failure, Renal Replacement Therapy, and Mortality in Patients With Sepsis

Hanah Kim,Mina Hur,Joachim Struck,Andreas Bergmann,Salvatore Di Somma,GREAT Network 대한진단검사의학회 2020 Annals of Laboratory Medicine Vol.40 No.6

Background: Kidney failure occurs frequently and is associated with high mortality during sepsis. Proenkephalin (PENK) is an emerging biomarker of kidney function. We explored whether PENK levels could predict severity, organ failure, and mortality in septic patients. Methods: We measured the PENK level in the plasma of 215 septic patients using the sphingotest penKid assay (Sphingotec GmbH, Hennigsdorf, Germany). This was analyzed in terms of sepsis severity, vasopressor use, 30-day mortality, sequential organ failure assessment (SOFA) renal subscore, the Chronic Kidney Disease Epidemiology Collaboration estimated glomerular filtration rate (CKD-EPI eGFR) categories, and renal replacement therapy (RRT) requirement. Results: The PENK levels were significantly higher in patients with septic shock, vasopressor use, and non-survivors than in patients with solitary sepsis, no vasopressor use, and survivors, respectively (P=0.02, P=0.007, P<0.001, respectively). The PENK levels were significantly associated with SOFA renal subscore and CKD-EPI eGFR categories (both P<0.001). The distribution of lower eGFR (<60 mL/min/1.73 m2), RRT requirement, SOFA renal subscore, and the number of organ failures differed significantly according to the PENK quartile (P for trend<0.001 or 0.017). The 30-day mortality rate also differed significantly according to the PENK quartile (P for trend<0.001). Conclusions: PENK could be an objective and reliable marker to predict severity, organ failure, and 30-day mortality in septic patients.

Evaluation of the MULTISURE HIV Rapid Test in a Korean population with low human immunodeficiency virus prevalence

Kim, Hyeong-Nyeon,Hur, Mina,Kim, Hanah,Moon, Hee-Won,Yun, Yeo-Min,Oh, Eun-Jee,Cho, Young-Sook,Cho, Sung Eun,Cho, Jinhee,Cho, Ah Ra,Park, Seungman De Gruyter 2019 Clinical chemistry and laboratory medicine Vol.57 No.8

Carbon-coated V₂O₅ nanoparticles derived from metal-organic frameworks as a cathode material for rechargeable lithium-ion batteries

Kim, Taegyeong,Kim, Hanah,You, Tae-Soo,Kim, Jongsik Elsevier 2017 Journal of alloys and compounds Vol.727 No.-

<P><B>Abstract</B></P> <P>Carbon-coated V<SUB>2</SUB>O<SUB>5</SUB> nanoparticles were synthesized by a facile synthetic process using as-synthesized MIL-47(V) (MIL-47(V)as) as both vanadium and carbon precursors with controlled heat treatment. The synthesized V<SUB>2</SUB>O<SUB>5</SUB> nanoparticles had a thin (4–6 nm) carbon-coating layer, formed by the controlled thermal decomposition of the carboxylate groups of MIL-47(V)as. The highly crystallized and carbon-coated V<SUB>2</SUB>O<SUB>5</SUB> nanoparticles exhibited an enhanced initial discharge capacity of ∼286 mA h g<SUP>−1</SUP> and good capacity retention of ∼91%, after 50 cycles at a rate of 0.1 C, for voltages in the 2.1–4.0 V range.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Carbon-coated V<SUB>2</SUB>O<SUB>5</SUB> nanocrystals are synthesized by annealing MIL-47 as vanadium and carbon sources. </LI> <LI> The prepared V<SUB>2</SUB>O<SUB>5</SUB> nanocrystals have uniform carbon layers with a thickness of 4–6 nm. </LI> <LI> The carbon-coated V<SUB>2</SUB>O<SUB>5</SUB> nanocrystals show excellent electrochemical properties compared to bare V<SUB>2</SUB>O<SUB>5</SUB> particles. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

ZnO-Embedded N-Doped Porous Carbon Nanocomposite as a Superior Anode Material for Lithium-Ion Batteries

Kim, Taegyeong,Kim, Hanah,Han, Jung-Min,Kim, Jongsik Pergamon Press 2017 Electrochimica Acta Vol. No.

<P><B>Abstract</B></P> <P>A nano-sized ZnO-loaded/N-doped carbon composite (ZnO/N-CF) was prepared by anchoring the zeolitic imidazolate framework, ZIF-8, onto a porous carbon foam (CF) with water vapor-assisted method, followed by the controlled two-step heat treatments. Utilization of ZIF-8 as a Zn source facilitated the impregnation of Zn species into the mesopores of the CF matrix, establishing the beneficial conductive networks between ZnO particles and preventing the growth and aggregation of ZnO particles during the prolonged cycles. The ZnO/N-CF sample exhibited stable discharge capacities of more than 1177mA h g<SUP>−1</SUP> after 100 cycles with a current density of 98mAg<SUP>−1</SUP> between 0.01 and 3.0V. It also showed excellent rate capabilities compared to bare ZnO and previously reported other ZnO-based electrodes.</P> <P><B>Highlights</B></P> <P> <UL> <LI> ZnO impregnated N-doped carbon composite (ZnO/N-CF) is fabricated by using ZIF-8 and mesoporous carbon foam (CF). </LI> <LI> Utilization of ZIF-8 significantly improves the impregnation process due to the hydrophobic interaction with CF matrix. </LI> <LI> The ZnO/N-CF sample shows superior electrochemical properties to those of bare ZnO. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Skein-shaped ZnO/N-doped carbon microstructures as a high performance anode material for lithium-ion batteries

Kim, Hanah,Jae, Woojin,Song, Jungwook,Kim, Jongsik Elsevier 2019 JOURNAL OF ALLOYS AND COMPOUNDS Vol.772 No.-

<P><B>Abstract</B></P> <P>Zinc oxide (ZnO) has significant attentions as an alternative anode material for lithium-ion batteries because of its high theoretical capacity (987 mA h g<SUP>−1</SUP>), lack of toxicity, abundance, and environmental friendliness. In particular, the theoretical capacity of ZnO is almost three times higher than that of the commercial graphite anode (about 372 mA h g<SUP>−1</SUP>) as a result of its alloying and conversion reactions with lithium ions. However, severe capacity fading and poor reaction kinetics are often caused by the low electrical conductivity, slow lithium-ion diffusion, and large volume changes of ZnO during repeated charge/discharge processes. To overcome these drawbacks, N-doped carbon-coated ZnO microstructures are synthesized through a facile hydrothermal reaction and the subsequent calcination process using citric acid and urea as carbon and nitrogen sources, respectively. The ZnO sample has a hierarchical skein-shaped morphology and exhibits a higher discharge capacity of about 1047 mA h g<SUP>−1</SUP> after 100 cycles at a 0.1 C rate in the 0.01–3.0 V voltage range, compared to those of bare ZnO and carbon-coated ZnO samples (about 42 and 341 mA h g<SUP>−1</SUP> after 100 cycles, respectively).</P> <P><B>Highlights</B></P> <P> <UL> <LI> Skein-shaped ZnO/NC microstructures are fabricated by a facile hydrothermal method. </LI> <LI> Citric acid and urea are used as both C and N sources and morphology controllers. </LI> <LI> The ZnO/NC exhibits the significantly improved electrochemical performances. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Absolute Change in High-Sensitivity Cardiac Troponin I at Three Hours After Presentation is Useful for Diagnosing Acute Myocardial Infarction in the Emergency Department

Jong Won Kim,Hanah Kim,Yeo-Min Yun,Kyeong Ryong Lee,Hyun-Joong Kim 대한진단검사의학회 2020 Annals of Laboratory Medicine Vol.40 No.6

Background: A rise and/or fall in cardiac troponin value with at least one value above the 99th percentile upper reference limit is essential for acute myocardial infarction (AMI) diagnosis. We evaluated the clinical usefulness of serial high-sensitivity cardiac troponin I (hs-cTnI) measurements in AMI diagnosis, in terms of the predictability of absolute and relative changes. Methods: For this retrospective, forward observational study, we enrolled 281 patients older than 18 years who presented with chest pain at the emergency department (ED) between August 2015 and December 2016. The patients were grouped as AMI and non-AMI, and 73 (26%) were diagnosed as having AMI. Hs-cTnI (Abbott Diagnostics, Abbott Park, IL, USA) was measured at presentation and 3 hours later. We assessed the diagnostic performance of the absolute and relative changes in hs-cTnI. Results: The cut-off values to predict AMI were 16.2 ng/L and 42.1% for the absolute and relative hs-cTnI changes, respectively. The area under the curve of hs-cTnI for AMI diagnosis was larger for absolute changes than for relative changes [0.96 (95% confidence interval [CI], 0.92–0.98) vs 0.89 (95% CI, 0.85–0.93)] (P=0.014). Conclusions: The absolute hs-cTnI change at 3 hours after presentation was superior to the relative change, and a rise and/or fall in hs-cTnI of >16.2 ng/L at 3 hours after presentation was useful to identify AMI in patients presenting at the ED.

FeOF ellipsoidal nanoparticles anchored on reduced graphene oxides as a cathode material for sodium-ion batteries

Park, Miji,Shim, Jae-Hyun,Kim, Hanah,Park, Hansol,Kim, Namyeong,Kim, Jongsik Elsevier 2018 Journal of Power Sources Vol.396 No.-

<P><B>Abstract</B></P> <P>FeOF/reduced graphene oxide (r-GO) nanocomposites are synthesized with approximately 8 and 13 wt% r-GO. The FeOF nanoparticles are fabricated using FeSiF<SUB>6</SUB>⋅6H<SUB>2</SUB>O as a precursor through solvothermal treatment with 1-propanol. This method provides a more reliable and facile wet-chemical route to synthesize phase-pure FeOF without FeF<SUB>2</SUB> and Fe<SUB>2</SUB>O<SUB>3</SUB> impurities, as compared to the annealing process in air. The FeF<SUB>2</SUB> phase is formed as an intermediate during the synthetic process. The prepared FeOF/r-GO sample with 13 wt% r-GO (FeG20) exhibits improved discharge capacity, cycling stability, and rate performance as a cathode material in sodium-ion batteries, compared to the bare FeOF at 1.2–4.0 V. The enhanced electrochemical properties for sodium-ion storage are mainly attributed to the size-controlled FeOF nanoparticles and their intimate contact with the conductive r-GO matrix.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Ellipsoidal FeOF nanoparticles anchored on r-GO were fabricated in a mild condition. </LI> <LI> The particle size of FeOF was decreased with the r-GO contents in the FeOF/r-GO composites. </LI> <LI> The FeOF/r-GO composites show superior electrochemical performances to those of bare FeOF. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Biomarker Rule-in or Rule-out in Patients With Acute Diseases for Validation of Acute Kidney Injury in the Emergency Department (BRAVA): A Multicenter Study Evaluating Urinary TIMP-2/IGFBP7

Yang Hyun Suk,Hur Mina,Lee Kyeong Ryong,Kim Hanah,Kim Hahn Young,Kim Jong Won,Chua Mui Teng,Kuan Win Sen,Kuan Win Sen,Kitiyakara Chagriya,Phattharapornjaroen Phatthranit,Chittamma Anchalee,Werayachank 대한진단검사의학회 2022 Annals of Laboratory Medicine Vol.42 No.2

Background: Urine tissue inhibitor of metalloproteinases-2/insulin-like growth factor-binding protein 7 (TIMP-2/IGFBP7) (NephroCheck, Ortho Clinical Diagnostics, Raritan, NJ, USA) is a US Food and Drug Administration-approved biomarker for risk assessment of acute kidney injury (AKI) in critically ill adult patients in intensive care units; however, its clinical impact in the emergency department (ED) remains unproven. We evaluated the utility of NephroCheck for predicting AKI development and short-term mortality in the ED. Methods: This was a prospective, observational, five-center international study. We consecutively enrolled ED patients admitted with ≥30% risk of AKI development (assessed by ED physician: ED score) or acute diseases. Serum creatinine was tested on ED arrival (T0), day 1, and day 2 (T48); urine for NephroCheck was collected at T0 and T48. We performed ROC curve and reclassification analyses. Results: Among the 529 patients enrolled (213 females; median age, 65 years), AKI developed in 59 (11.2%) patients. The T0 NephroCheck value was higher in the AKI group than in the non-AKI group (median 0.77 vs. 0.29 (ng/m)2/1,000, P=0.001), and better predicted AKI development than the ED score (area under the curve [AUC], 0.64 vs. 0.53; P=0.04). In reclassification analyses, adding NephroCheck to the ED score improved the prediction of AKI development (P<0.05). The T0 NephroCheck value predicted 30-day mortality (AUC, 0.68; P<0.001). Conclusions: NephroCheck can predict both AKI development and short-term mortality in at-risk ED patients. NephroCheck would be a useful biomarker for early ruling-in or ruling-out of AKI in the ED.

기업 연구개발투자 결정의 재무적 · 연구적 요인 및 정부 연구개발보조금의 효과 분석

조하나(Hanah Cho),김준기(Junki Kim) 한국기술혁신학회 2019 기술혁신학회지 Vol.22 No.5

본 연구는 정부연구개발사업에 참여하는 기업의 자체 연구개발투자 결정 요인들을 재무적 특성과 연구적 특성으로 구분하여 각각의 효과를 비교하고 정부의 직접 보조금 지급과 기업의 자체 연구개발 투자와의 관계를 분석한다. 결과적으로 대기업보다는 중소기업이, 기업의 영업이익이 크고 부채비율이 낮을수록 정부의 연구개발사업에 참여할 가능성이 높게 나타났고 정부 연구개발사업에 참여하는 기업의 총 연구원 수와 신규 사업 참여 여부는 자체 연구개발투자에 긍정적인 영향을 주는 것으로 나타났다. 그러나 기업의 연구개발단계, 기술수명주기와 같은 연구적 특성이 자체 연구개발투자에 미치는 영향은 미미한 것으로 나타나 기업의 연구적 특성보다는 영업이익이나 부채와 같은 재무적 특성이 기업의 자체 연구개발투자에 더 크게 영향을 미치는 것으로 확인되었다. 또한 전(前)기에 보조금을 수령하지 않은 기업들을 대상으로 한 DID 분석에서 정부보조금 수혜 여부와 수령액은 모두 자체 연구개발비를 보완하는 효과를 가지는 것으로 나타났으며 기업의 매출액, 영업이익, 부채비율과 같은 재무적 특성은 자체 연구개발비에 유의하게 영향을 미치는 것으로 나타났다. 마지막으로 정부의 직접 보조금 지급은 단기적 그리고 중장기적으로 기업의 연구개발투자에 긍정적인 효과를 가지는 것으로 나타났다. This paper explored the financial and R&D characteristics of firms that participate in the government R&D programs and analyzed the effect of government R&D subsidies on private R&D investments. First, by using Heckman selection model, we studied the difference between the firms that participate in the government R&D program and those that do not and how firms’ financial and R&D characteristics affect their R&D investments. Then we examined whether the government R&D subsidies complement or substitute private R&D investments. Our findings suggest that small firms with greater revenues and lower debt are likely to participate in the government R&D programs. Moreover, our results show that firms’ financial characteristics play a more significant role than their R&D characteristics in promoting R&D investments and direct government subsidy has a positive effect on private R&D investments for firms that did not receive subsidy in the previous year. Finally, direct government R&D subsidies have a positive effect on private R&D investments both in the short and medium term.