Publications by authors named "Chan Joong Kim"

Objectives: Ginsenosides found in ginseng, and the hydrolysates derived from their conversion, exhibit diverse pharmacological characteristics [1]. These have been shown to include anti-cancer, anti-angiogenic, and anti-metastatic effects, as well as being able to provide hepatic and neuroprotective effects, immunomodulation, vasodilation, promotion of insulin secretion, and antioxidant activity. Therefore, the purpose of this study was to examine how quickly the ginsenosides decompose and what kinds of degradation products are created under physicochemical processing conditions that don't involve toxic chemicals or other treatments that may be harmful.

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Article Synopsis
  • The study demonstrates using octadecylamine (ODA) surfactant as a template to control the assembly of graphene oxide (GO) sheets at the liquid-gas interface, which is important for graphene device applications.
  • By applying Langmuir-Schaefer or Langmuir-Blodgett techniques, researchers created densely packed 2D GO films on various substrates, and ODA molecules helped maintain their morphology during compression by causing wrinkling instead of overlapping.
  • The resulting wrinkled graphene structures remained stable even after treatments aimed at enhancing their properties, indicating potential use in nanoelectronics, supercapacitors, and fuel cells.
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C-doped MgB2 wires were fabricated from a polyacrylic acid (PAA) using a conventional in-situ PIT technique. The effects of the PAA content on the lattice parameter, microstructure, critical temperature (Tc) and critical current density (Jc) were examined. With increasing PAA content, the amount of MgO in the sample increased but the crystallinity, a-axis lattice parameter, and Tc of MgB2 wires decreased, indicating that the C that decomposed from PAA during heat treatment had substituted for B.

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We fabricated carbon nanotube (CNT)- and nano-carbon (NC)-doped MgB2 using an in-situ process in order to improve the critical current density (J(c)) at high magnetic field. We then evaluated the effects of the doped carbon content on phase formation, microstructure, and critical properties. CNT had a diameter and length of 5-10 nm and 0.

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Purpose: To compare the levels of calcium and phosphorus in the aqueous humor and serum of diabetics and non-diabetics.

Methods: We divided patients into two groups: seventy-six non-diabetic cataract patients and fifty-two diabetic cataract patients. The diabetic group was divided again into three subgroups: twenty-six patients with no diabetic retinopathy, thirteen patients with non-proliferative diabetic retinopathy, and thirteen patients with proliferative diabetic retinopathy.

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