Search results for: Bo-Hye Kim

Items from 1 to 20 out of 66 results

article

Illness uncertainty and complementary and alternative medicine use in patients undergoing hemodialysis

Hae Ok Jeon, Bo Hye Kim, Oksoo Kim

Nursing & Health Sciences > 21 > 3 > 375 - 381

In this study, we identified the relationships between illness uncertainty, subjective health, and the use of complementary and alternative medicine in patients undergoing hemodialysis. In total, 138 participants who were diagnosed with stages 4–5 chronic kidney disease and currently receiving hemodialysis were included. A cross‐sectional, correlational design was utilized. Illness uncertainty was...

article

Effect of low processing rate on homogeneous microstructural evolution of polyacrylonitrile-based carbon fibers

Doo-Won Kim, Dae Ho Kim, Sung Ryong Kim, Bo-Hye Kim, more

Carbon Letters > 2019 > 29 > 5 > 479-485

This study demonstrates that low processing rate for producing polyacrylonitrile (PAN)-based carbon fiber is a critical to obtain a homogeneous radial microstructure with high resistance to oxidation, thereby resulting in their improved mechanical strength. The dry-jet wet spun PAN organic fibers were processed (e.g., stabilized and then carbonized) utilizing two different rates; one is 1.6 times...

article

Enhanced electrochemical properties of manganese oxide and boron dual-decorated carbon nanofibers with hierarchical micro/mesopores

Ji Hwan Jeong, Bo-Hye Kim

Synthetic Metals > 2018 > 244 > C > 48-53

Manganese oxide (MnO₂) and boron dual-decorated carbon nanofibers with hierarchical micro/mesopores (PPMMABMn) were fabricated by electrospinning and subsequent thermal technique to study the effect of the MnCl₂ content on the microstructures and electrochemical properties in application as an electrode material of electrochemical capacitors (ECs). Transmission electron microscopy (TEM), energy dispersive...

article

Synergistic effects of pitch and poly(methyl methacrylate) on the morphological and capacitive properties of MnO2/carbon nanofiber composites

Ji Hwan Jeong, Bo-Hye Kim

Journal of Electroanalytical Chemistry > 2018 > 809 > C > 130-135

Porous electrically conducting carbon nanofibers with MnO₂ (P-Pitch-PM-Mn) are prepared by electrospinning blended solutions of pitch, poly(methyl methacrylate) (PMMA), manganese(II) chloride (MnCl₂), and polyacrylonitrile (PAN) in N,N-dimethylformamide (DMF), and their electrochemical properties are investigated as supercapacitor electrodes. In these nanofiber composites, the pitch plays a key role...

article

Electrochemical capacitor performance of 2-(trimethylsilyloxy)ethyl methacrylate-derived highly mesoporous carbon nanofiber composite containing MnO2

So Yeun Kim, Jae-Hyung Wee, Cheol-Min Yang, Bo-Hye Kim

Journal of Electroanalytical Chemistry > 2017 > 801 > C > 403-409

2-(Trimethylsilyloxy)ethyl methacrylate (SMA)-derived mesoporous carbon nanofiber composite containing MnO₂ (Si-Mn-CNF) is fabricated by electrospinning method and found to be a very promising candidate for supercapacitor electrodes. Si-Mn-CNF possesses a large surface area of 707m²g⁻¹, high pore volume of 2.35cm³g⁻¹, and high mesopore fraction of 65%. Herein, SMA is used as an activating agent to...

article

Enhanced electrochemical properties of boron functional groups on porous carbon nanofiber/MnO2 materials

Do Geum Lee, Cheol-Min Yang, Bo-Hye Kim

Journal of Electroanalytical Chemistry > 2017 > 788 > C > 192-197

Heteroatoms (B, N, O)-containing porous manganese oxide (MnO₂)/carbon nanofiber (MnB-CNF) materials are prepared by one-step electrospinning method via polyacrylonitrile (PAN) and manganese(II) chloride (MnCl₂) in dimethylformamide (DMF) solution containing different concentrations of B₂O₃. The MnB-CNF electrode exhibits optimized electrochemical behavior with a high energy density of 22.6Whkg⁻¹ at...

article

Screening of breast cancer stem cell inhibitors using a protein kinase inhibitor library

Hack Sun Choi, Dal-Ah Kim, Heesung Chung, In Ho Park, more

Cancer Cell International > 2017 > 17 > 1 > 1-12

Background Cancer stem cells (CSCs), a subpopulation in tumors, are known to cause drug resistance, tumor recurrence and metastasis. Based on the characteristic formation of mammospheres in in vitro conditions, the mammosphere formation assay has become an essential tool for quantifying CSC activity in breast cancer research. However, manual counting of mammospheres is a time-consuming process that...

article

Capacitive properties of hierarchically structured carbon nanofiber/graphene/MnO2 hybrid electrode with nitrogen and oxygen heteroatoms

Do Geum Lee, Yoong Ahm Kim, Bo-Hye Kim

Carbon > 2016 > 107 > C > 783-791

Hierarchically structured carbon nanofiber/graphene/MnO₂(CGMn) hybrid with oxygen and nitrogen functionalities was fabricated in the form of a web via electrospinning as an electrode material for supercapacitors. The CGMn electrode exhibited a high capacitance (225 Fg⁻¹ at 1 mAcm⁻²), enhanced energy and power efficiency (15.8–13.6 Whkg⁻¹ in the power density range of 197–4000 Wkg⁻¹), and excellent...

article

Silica decorated on porous activated carbon nanofiber composites for high-performance supercapacitors

So Yeun Kim, Bo-Hye Kim

Journal of Power Sources > 2016 > 328 > C > 219-227

A hybrid of silica decorated on porous activated carbon nanofibers (ACNFs) is fabricated in the form of a web via electrospinning and an activation process as an electrode material for electrochemical capacitors in an organic electrolyte. The introduction of PhSiH₃ (PS) into the polyacrylonitrile (PAN) solution induces a porous ACNF structure containing silica nanoparticles (NPs) via the spontaneous...

article

MnO2 decorated on electrospun carbon nanofiber/graphene composites as supercapacitor electrode materials

Do Geum Lee, Bo-Hye Kim

Synthetic Metals > 2016 > 219 > C > 115-123

Composites made of MnO₂ well-decorated on hierarchical porous carbon nanofiber/graphene (MnO₂/HPCNF/G) have been successfully prepared through one-step electrospinning and thermal process as an electrode material for electrochemical capacitors. The presence of graphene in the MnO₂/HPCNF/G composite fibers aids the uniform dispersion of the MnO₂ particles and thus prevents their agglomeration. A graphene...

article

Molecular epidemiological and serological studies of bovine leukemia virus (BLV) infection in Thailand cattle

EunJung Lee, Eun-Ju Kim, Jadsada Ratthanophart, Ratchaneekorn Vitoonpong, more

Infection, Genetics and Evolution > 2016 > 41 > C > 245-254

BLV is the etiological agent of enzootic bovine leucosis. BLV has negative effects on animal health and causes economic losses worldwide. However, epidemiological studies on BLV are relatively unknown in many parts of Asian countries. Thus, this study sought to explore BLV infections in cattle in Thailand to determine the extent of the geographic distribution of BLV and to measure its prevalence rates...

article

Hierarchical porous MnO2/carbon nanofiber composites with hollow cores for high-performance supercapacitor electrodes: Effect of poly(methyl methacrylate) concentration

Do Geum Lee, Ji Hoon Kim, Bo-Hye Kim

Electrochimica Acta > 2016 > 200 > C > 174-181

Hierarchical porous MnO₂/carbon nanofiber composites with hollow cores (MnPMCNFs) are fabricated by a simple electrospinning method using poly(methyl methacrylate) (PMMA) for electrochemical capacitor electrodes. The introduction of PMMA into the PAN solution aids the uniform dispersion of the amorphous MnO₂ particles as a stabilizer and increases the specific surface area with numerous hollow cores,...

article

Serum 25-hydroxyvitamin D as a predictor of hospitalization-free survival in predialysis and dialysis patients with chronic kidney disease: a single-center prospective observational analysis

Eun-Jung Ko, Bo Hye Kim, Hye Yun Jeong, Sung Un Soe, more

Kidney Research and Clinical Practice > 2016 > 35 > 1 > 22-28

Vitamin D has pleiotropic effects important for the proper functioning of multiple organ systems. We investigated whether serum 25-hydroxyvitamin D [25(OH)D] levels influenced hospitalization-free survival in patients with chronic kidney disease (CKD).In this prospective study, serum levels of 25(OH)D were measured in 210 patients with CKD in the winter of 2009. Data regarding hospitalizations were...

article

Multiplex RT-PCR detection of H3N2 influenza A virus in dogs

EunJung Lee, Eun-Ju Kim, Bo-Hye Kim, Jae-Young Song, more

Molecular and Cellular Probes > 2016 > 30 > 1 > 56-60

A multiplex RT-PCR (mRT-PCR) assay to detect H3N2 CIV genomic segments was developed as a rapid and cost-effective method. Its performance was evaluated with forty-six influenza A viruses from different hosts using three primer sets which amplify four segments of H3N2 CIV simultaneously. The mRT-PCR has been successful in detecting the viral segments, indicating that it can improve the speed of diagnosis...

article

Molecular analyses of H3N2 canine influenza viruses isolated from Korea during 2013–2014

EunJung Lee, Eun-Ju Kim, Bo-Hye Kim, Jae-Young Song, more

Virus Genes > 2016 > 52 > 2 > 204-217

Canine influenza A virus (CIV) causes a respiratory disease among dog populations and is prevalent in North America and Asia. Recently, Asian H3N2 CIV infection has been of particular concern, with recent reports related to reassortants with pandemic 2009 strains, direct transmission from a human H3N2, a possibility of H3N2 CIV transmission to other mammals, and even the first outbreak of H3N2 CIVs...

article

Mesopore-enriched activated carbon nanofiber web containing RuO2 as electrode material for high-performance supercapacitors

Bo-Hye Kim, Chang Hyo Kim, Do Geum Lee

Journal of Electroanalytical Chemistry > 2016 > 760 > Complete > 64-70

Mesopore-enriched activated carbon nanofiber mats incorporating RuO₂ (RuPM-ACNF) are prepared by a simple electrospinning method with the help of poly(methyl methacrylate) (PMMA), and their electrochemical property electrodes are investigated as a supercapacitor electrode. The microstructure of RuPM-ACNF is changed in terms of high specific surface area, narrow pore size distribution, and tunable...

article

Highly conductive, porous RuO2/activated carbon nanofiber composites containing graphene for electrochemical capacitor electrodes

Kap Seung Yang, Bo-Hye Kim

Electrochimica Acta > 2015 > 186 > C > 337-344

RuO₂/activated carbon nanofiber (ACNF) composites containing graphene are prepared by a simple electrospinning method, followed by physical activated carbonation. We investigate the electrochemical properties as supercapacitor electrodes and the structural properties of these RuO₂/ACNF materials as a function of the graphene concentration. The porous RuO₂/ACNF composites exhibit an improved microstructure...

article

Electrochemical performance of activated carbon nanofiber with ZnO nanoparticles for Li-ion battery

So Yeun Kim, Bo-Hye Kim

Synthetic Metals > 2015 > 210 > Part B > 386-391

A ZnO/activated carbon nanofiber (ACNF) composite is fabricated by electrospinning and subsequent thermal treatment as a novel anode material for lithium-ion batteries (LIBs). A ZnO(20)–ACNF sample prepared with a weight ratio of 20wt% zinc acetate to polyacrylonitrile (PAN) exhibits stable capacity retention and a reversible capacity of above 380mAhg⁻¹ at 0.1C rate after 100 cycles, which is much...

article

Preparation and electrochemical properties of RuO2-containing activated carbon nanofiber composites with hollow cores

Kap Seung Yang, Chang Hyo Kim, Bo-Hye Kim

Electrochimica Acta > 2015 > 174 > C > 290-296

RuO₂-containing activated carbon nanofibers with hollow cores (PMRu-ACNFs) are prepared through one-step electrospinning using polyacrylonitrile (PAN), poly(methyl methacrylate) (PMMA), and ruthenium(III) acetylacetonate followed by thermal treatment. The porous PMRu-ACNF composites exhibit an improved morphological structure and textual properties due to the increased surface area, unique nanotexture,...

chapter

IT02. TiO2 nanoparticles loaded on graphene/carbon composite nanofibers by electrospinning for increased photocatalysis

Chang Hyo Kim, Bo-Hye Kim, Kap Seung Yang

2015 2nd International Symposium on Physics and Technology of Sensors (ISPTS) > II - III

2015 2nd International Symposium on Physics and Technology of Sensors (ISPTS)

Graphene/carbon composite nanofibers (GCNFs) with attached TiO2 nanoparticles (TiO2-GCNF) were prepared, and their photocatalytic degradation ability under visible light irradiation was assessed. They were characterized using scanning and transmission electron microscopy, X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, and ultraviolet-visible diffuse spectroscopy. The results...

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INFONA - science communication portal

Search results for: Bo-Hye Kim

Illness uncertainty and complementary and alternative medicine use in patients undergoing hemodialysis

Effect of low processing rate on homogeneous microstructural evolution of polyacrylonitrile-based carbon fibers

Enhanced electrochemical properties of manganese oxide and boron dual-decorated carbon nanofibers with hierarchical micro/mesopores

Synergistic effects of pitch and poly(methyl methacrylate) on the morphological and capacitive properties of MnO2/carbon nanofiber composites

Electrochemical capacitor performance of 2-(trimethylsilyloxy)ethyl methacrylate-derived highly mesoporous carbon nanofiber composite containing MnO2

Enhanced electrochemical properties of boron functional groups on porous carbon nanofiber/MnO2 materials

Screening of breast cancer stem cell inhibitors using a protein kinase inhibitor library

Capacitive properties of hierarchically structured carbon nanofiber/graphene/MnO2 hybrid electrode with nitrogen and oxygen heteroatoms

Silica decorated on porous activated carbon nanofiber composites for high-performance supercapacitors

MnO2 decorated on electrospun carbon nanofiber/graphene composites as supercapacitor electrode materials

Molecular epidemiological and serological studies of bovine leukemia virus (BLV) infection in Thailand cattle

Hierarchical porous MnO2/carbon nanofiber composites with hollow cores for high-performance supercapacitor electrodes: Effect of poly(methyl methacrylate) concentration

Serum 25-hydroxyvitamin D as a predictor of hospitalization-free survival in predialysis and dialysis patients with chronic kidney disease: a single-center prospective observational analysis

Multiplex RT-PCR detection of H3N2 influenza A virus in dogs

Molecular analyses of H3N2 canine influenza viruses isolated from Korea during 2013–2014

Mesopore-enriched activated carbon nanofiber web containing RuO2 as electrode material for high-performance supercapacitors

Highly conductive, porous RuO2/activated carbon nanofiber composites containing graphene for electrochemical capacitor electrodes

Electrochemical performance of activated carbon nanofiber with ZnO nanoparticles for Li-ion battery

Preparation and electrochemical properties of RuO2-containing activated carbon nanofiber composites with hollow cores

IT02. TiO2 nanoparticles loaded on graphene/carbon composite nanofibers by electrospinning for increased photocatalysis

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