606 Result(s)
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Article
Hye** Park
English
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Article
The effect of swirling flow in the mixing chamber of atomizer and the length/diameter ratio of atomizer exit on the distribution of coal particles in CWM spray
This research is aimed to investigate how the swirling phenomena in an atomizer and the ratio of length/diameter of the atomizer exit affect the size distribution of coal particle in spray. CWM slurries are in...
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Growth mechanism of monodispersed TiO2 fine particles by the hydrolysis of Ti(OC2H5)4
In order to investigate the growth mechanism of TiO2, the monodispersed TiO2 fine particles were prepared by hydrolysis of Ti(OC2H5)4 using the seed preparation method. Although it was impossible to grow TiO2 par...
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Optimal conditions for the production of exopolysaccharide by marine microorganismHahella chejuensis
A marine microorganism, strain 96CJ10356 produced exopolysaccharide, designated as EPS-R. To optimize culture conditions for the production of EPS-R, carbon and nitrogen sources, mineral salts, temperature, an...
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Demulsification of oil-in-water emulsions by aerial spores of a Streptomyces sp.
Of a number of actinomycetes isolated from Antarctica and coastal regions of Korea, one isolate, identified as a Streptomycessp., demulsified an emulsion of kerosene/0.2% Triton X-100 (2:1, v/v) within 1 min. The...
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Chemotherapeutic drug, adriamycin, restores the function of p53 protein in hepatitis B virus X (HBx) protein-expressing liver cells
Hepatitis B virus X (HBx) protein implicated in the development of liver cancer may inhibit the function of p53 tumor suppressor protein through cytoplasmic retention of p53 protein. Here, we attempt to invest...
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Robust control of robot manipulator with actuators
A Robust controller is designed for cascaded nonlinear uncertain systems that can be decomposed into two subsystems; that is, a series connection of two nonlinear subsystems, such as a robot manipulator with a...
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Rheological properties and stability of magnetorheological fluids using viscoelastic medium and nanoadditives
In order to improve the stability of magnetorheological (MR) fluids, viscoelastic medium having 2.2 Pa yield stress has been used as a continuous phase and nanosized CrO2 particles are added too. The rheological ...
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Anti-lock brake system control for buses based on fuzzy logic and a sliding-mode observer
In this paper, an anti-lock brake system (ABS) for commercial buses is proposed based on a fuzzy-logic controller and a sliding-mode observer of the vehicle speed. The brake controller generates pulse width mo...
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Effect of aeration rates on production of extracellular polysaccharide, EPS-R, by marine bacteriumHahella chejuensis
The production of an extracellular polysaccharide, EPS-R, from the marine bacteriumHahella chejuensis was investigated at various aeration rates in a batch culture. Higher aeration rate resulted in enhanced EPS p...
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Vertical Alignment of Single-Walled Carbon Nanotubes on Chemically Functionalized Silicon Substrates
Carbon nanotubes have been widely investigated as an essential component for fabricating nanoelectronic devices and for their numerous applications. We investigated the vertical alignment of single-walled carb...
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Design and stability analysis of impedance controller for bilateral teleoperation under a time delay
A new impedance controller is proposed for bilateral teleoperation under a time delay. The proposed controller does not need to measure or estimate the time delay in the communication channel using the force l...
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Comparison and Analysis of the Complete Nucleotide Sequence of Foot-and-Mouth Disease Viruses from Animals in Korea and Other PanAsia Strains
During the last 3 years, foot-and-mouth disease virus serotype O, named PanAsia, caused two outbreaks in the Republic of Korea. To determine if there was an obvious genetic relationship between the virus isola...
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Paragangliomas in the cauda equina region: clinicopathoradiologic findings in four cases
Paragangliomas of the cauda equina are rare neuroendocrine tumors. Four cases of nonsecreting paraganglioma of the cauda equina, preoperatively misdiagnosed as neurinoma, are presented with an emphasis on the ...
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Open AccessPresence of autocrine hepatocyte growth factor-Met signaling and its role in proliferation and migration of SNU-484 gastric cancer cell line
Autocrine stimulation via coexpression of hepatocyte growth factor (HGF) and its receptor (Met) has been reported in many human sarcomas, but few in carcinomas. In this report, we found that one gastric cancer...
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Open AccessReceptor activator of NF-κB ligand enhances the activity of macrophages as antigen presenting cells
Receptor activator of NFκB ligand (RANKL) is known as a key regulator of osteoclastogenesis. However, the fact that fibroblasts and periodontal ligament cells express RANKL in response to bacterial substances,...
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Fluoroquinolone-modifying enzyme: a new adaptation of a common aminoglycoside acetyltransferase
Antimicrobial-modifying resistance enzymes have traditionally been class specific, having coevolved with the antibiotics they inactivate. Fluoroquinolones, antimicrobial agents used extensively in medicine and...
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Part 2: Multilayer perceptron and natural gradient learning
Since the perceptron was developed for learning to classify input patterns, there have been plenty of studies on simple perceptrons and multilayer perceptrons. Despite wide and active studies in theory and app...
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Optimal trajectory generation for biped robots walking up-and-down stairs
This paper proposes an optimal trajectory generation method for biped robots for walking up-and-down stairs using a Real-Coded Genetic Algorithm (RCGA). The RCGA is most effective in minimizing the total consu...
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Trajectory generation and dynamic control of planar biped robots with curved soles
This paper proposes a locomotion pattern and a control method for biped robots with curved soles. First, since the contact point of a supporting leg may arbitrarily move back and forth on the ground, we derive...
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Existence and asymptotic stability for viscoelastic problems with nonlocal boundary dissipation
We consider the damped semilinear viscoelastic wave equation $$u'' - \Delta u + \int_0^t h (t - \tau ) div\{ a\nabla u(\tau )\} d\ta...
