35 Result(s)
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Article
Yong Il Park
English
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Article
Simple Synthesis and Thermoelectric Properties of Mg2 + xSi0.5Sn0.5Sb0.075 Materials with Heterogeneous Microstructure
Mg2X (X = Si, Ge or Sn) based alloys are considered as promising candidates in the middle to high temperature range thermoelectric applications due to their low cost, nontoxicity and abundance of constituent elem...
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Loss of Dact2 alleviates cisplatin-induced nephrotoxicity through regulation of the Igfl-MAPK pathway axis
Wnt signaling is a principal pathway regulating the essential activities of cell proliferation. Here, we investigated the effect of Wnt/β-catenin signaling on in vivo drug-induced renal injury through the dele...
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Sulfated Glucuronorhamnoxylan from Capsosiphon fulvescens Ameliorates Osteoporotic Bone Resorption via Inhibition of Osteoclastic Cell Differentiation and Function In Vitro and In Vivo
Excessive osteoclast differentiation and/or bone resorptive function causes a gradual loss of bone, leading to the pathogenesis of bone diseases such as osteoporosis (OP). In this study, a sulfated glucuronorh...
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A Novel Galactoglucomannan Exopolysaccharide Produced by Oil Fermentation with Pseudozyma sp. SY16
Recently, the production of exopolysaccharide from Pseudozyma sp. SY16, which is mannosylerythritol lipid-producing yeast, has been occasionally observed during industrial fermentations. Moreover, exopolysacchari...
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Regio-specific biotransformation of alizarin to alizarin methoxide with enhanced cytotoxicity against proliferative cells
Alizarin has been reported to have an antigenotoxic activity along with an inhibitory effect on the tumor cell growth of human colon carcinoma cells. Alizarin was biotransformed into an O-methoxide derivative usi...
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Graphene Oxide-Hydrogen Membrane Fuel Cell
Proton exchange membrane fuel cell (PEMFC) utilizes polymer electrolyte membrane, e.g., Nafion™, which is a perfluorosulfonic acid (PFSA) membrane with many disadvantages such as expensive, low mechanical stre...
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Low Molecular Weight Mannogalactofucans Derived from Undaria pinnatifida Induce Apoptotic Death of Human Prostate Cancer Cells In Vitro and In Vivo
Low molecular weight mannogalactofucans (LMMGFs) prepared by enzymatic degradation of high molecular weight Undaria galactofucan (MF) were evaluated for their anti-cancer effects against human prostate cancer. Co...
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Biochemical properties of water soluble polysaccharides from photosynthetic marine microalgae Tetraselmis species
Water soluble polysaccharides (WSPs) were isolated from defatted microalgae Tetraselmis sp. KCTC 12432 BP (T.S1) and KCTC 12236 BP (T.S2), and purified by a combination of ethanol precipitation, immobilized metal...
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Metabolic engineering of Agrobacterium sp. ATCC31749 for curdlan production from cellobiose
Curdlan is a commercial polysaccharide made by fermentation of Agrobacterium sp. Its anticipated expansion to larger volume markets demands improvement in its production efficiency. Metabolic engineering for stra...
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Structural Features and Anti-coagulant Activity of the Sulphated Polysaccharide SPS-CF from a Green Alga Capsosiphon fulvescens
Previously, we reported that the sulphated polysaccharides (SPS)-CF, a water-soluble polysaccharide isolated and purified from Korean green alga Maesaengi (Capsosiphon fulvescens, Chlorophyta), is a glucuronogala...
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Label-free detection and molecular profiling of exosomes with a nano-plasmonic sensor
A nanosensor allows sensitive, high-throughput detection of the protein content of exosomes from cancer cells.
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Effect of particle size distribution on microstructure and mechanical properties of spark-plasma-sintered titanium from CP-Ti powders
The aim of this study was to determine the effect of particle size distribution on the microstructure and mechanical properties of spark-plasma-sintered titanium made from commercial pure titanium (CP-Ti) powd...
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Neuroprotective effects of N-acetylglucosamine against hydrogen peroxide-induced apoptosis in human neuronal SK-N-SH cells by inhibiting the activation of caspase-3, PARP, and p38
Neuroprotective effects of N-acetylglucosamine (GlcNAc), a monosaccharide derivative of glucose, against H2O2-induced neurotoxicity and its underlying mechanism in human SK-N-SH neuroblastoma cells were investiga...
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High-resolution three-photon biomedical imaging using doped ZnS nanocrystals
Three-photon excitation is a process that occurs when three photons are simultaneously absorbed within a luminophore for photo-excitation through virtual states. Although the imaging application of this proces...
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Enhanced hydrophobicity of GDL by a novel coating process in PEM fuel cells
The microstructure of the developed GDL containing MPL was analyzed by SEM/EDX by observing the surface and cross section of the specimen. The properties such as viscosity, electric conductivity, density, poro...
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Fabrication of gas diffusion layer (GDL) containing microporous layer using flourinated ethylene prophylene (FEP) for proton exchange membrane fuel cell (PEMFC)
Proton exchange membrane fuel cell (PEMFC), also known as polymer electrolyte membrane fuel cell, is the type of fuel cell being developed for transport applications as well as for stationary and portable appl...
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Purification and characterization of a polysialic acid-specific sialidase from Pseudomonas fluorescens JK-0412
An enzyme with polySia degrading activity was purified from a culture filtrate of Pseudomonas fluorescens JK-0412 to apparent homogeneity using DEAE-Sepharose CL-6B column chomatography and fast performance liqui...
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Characterization and immunostimulating activity of a water-soluble polysaccharide isolated from Haematococcus lacustris
A water-soluble polysaccharide was isolated and purified from the culture filtrate of the photosynthetic green microalgae Haematococcus lacustris by 75% ethanol precipitation and Sepharose CL-6B column chromatogr...
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Biological safety and B cells activation effects of Zanthoxylum schinifolium
Zanthoxylum schinifolium has been used as culinary applications in Asia and some of its elements have been elucidated to have various pharmaceutical effects such as anti-platelet aggregat...
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Properties of modified Nafion® membranes with heavy amount of (3-mercaptopropyl) trimethoxysilane prepared by long-term infiltration
Modified Nafion® membranes with a large amount of (3-mercaptopropyl) trimethoxysilane (MPTS) were fabricated by a long-term infiltration process. MPTS has been known as a strong surface modifier due to its abi...
