Abstract:
The present invention relates to a biodegradable polymer composite material, and more particularly, to a technique for providing a polymer composite material comprising an acrylonitrile-butadiene-styrene (ABS) resin and a biodegradable resin, wherein said polymer composite material has superior impact resistance.
Abstract:
The present invention relates to a biodegradable polymer composite material, and more particularly, to a technique for providing a polymer composite material comprising an acrylonitrile-butadiene-styrene (ABS) resin and a biodegradable resin, wherein said polymer composite material has superior impact resistance.
Abstract:
A method of controlling a filter coefficient of a continuous time filter of a data storage device is provided. The method of controlling filter coefficient includes positioning a magnetic head at a first reference height from surface of a magnetic disk and outputting a plurality of CSM values by measuring a channel state from a read signal output from the magnetic head when changing a cut-off frequency of the continuous time filter, positioning the magnetic head at a second reference height spaced from the first reference height and measuring a bit error ratio from a read signal output from the magnetic head positioned at the second reference height according to at least one CSM value selected among a plurality of CSM values, and controlling a filter coefficient value to determine a cut-off frequency of the continuous time filter according to a measured bit error ratio.
Abstract:
The present invention relates to a blue fluorescence compound which enables to achieve high brightness, a long lifetime and high efficiency; and an organic electroluminescence device thereof.
Abstract:
A method of controlling a filter coefficient of a continuous time filter of a data storage device is provided. The method of controlling filter coefficient includes positioning a magnetic head at a first reference height from surface of a magnetic disk and outputting a plurality of CSM values by measuring a channel state from a read signal output from the magnetic head when changing a cut-off frequency of the continuous time filter, positioning the magnetic head at a second reference height spaced from the first reference height and measuring a bit error ratio from a read signal output from the magnetic head positioned at the second reference height according to at least one CSM value selected among a plurality of CSM values, and controlling a filter coefficient value to determine a cut-off frequency of the continuous time filter according to a measured bit error ratio.
Abstract:
The present invention relates to a herbal mixture extract of Pleurotus eryngii, Acanthopanacis Cortex and Notoginseng Radix and a composition for prevention and treatment of periodontal disease containing the herbal mixture extract as an active ingredient, more precisely, a herbal mixture extract having activities of inhibiting the generation and activation of osteoclasts by enhancing the expression of osteoprotegerin (OPG) in osteoblasts, preventing alveolar bone from destruction by inhibiting the proliferation of osteoclasts and maintaining the growth of periodontal ligament cells and gingival fibroblasts, and a composition for prevention and treatment of periodontal disease containing the above mixture as an active ingredient.
Abstract:
A method for making n-type semiconducting diamond by use of CVD in which n-type impurities are doped simultaneously with the deposition of diamond. As the n-type impurities, an Li compound and a B compound, both, are used at once. After doping, a diamond film thus obtained is etched to peel off its surface. The n-type semiconducting diamond is superior in specific resistivity, 10.sup.-2 .OMEGA.cm or less.
Abstract:
Disclosed is an organic light emitting material having the following chemical formula, for improving luminous efficiency, where R1, R2, R3 and R4 denote materials selected from an aromatic group with 6-24 carbon atoms (C6-C24), the group being independently substituted or unsubstituted, preferably, an aromatic group with 6-24 carbon atoms (C6-C24), the group consisting of trimethylsilane (TMS), CN, halogen (F, Cl, Br) alkyl groups with 1-4 carbon atoms (C1-C4).
Abstract:
The present invention relates to a core material for a vacuum insulation panel that is formed with a phenolic resin, a vacuum insulation panel using the core material, and a method for manufacturing the vacuum insulation panel. More particularly, the core material is formed with a cured phenolic resin foam having a closed cell content of 20% or less. The cured phenolic resin foam includes cells whose average diameter is adjusted to 50 to 500 μm. The cells have fine holes with an average diameter of 0.5 to 30 μm on the surfaces thereof to allow the cured phenolic resin foam to have a void content of at least 50%. The use of the cured phenolic resin foam ensures high thermal insulation performance and improved structural strength of the core material, and enables the production of the core material at reduced cost.
Abstract:
Disclosed herein are red phosphorescent compounds of the following one of Formulas 1 to 3 wherein Formula 1 R1 and R2 are independently a C1-C4 alkyl group, R3, R4, R5 and R6 are independently selected from hydrogen, C1-C4 alkyl groups and C1-C4 alkoxy groups, wherein Formula 2 R1, R2, R3 and R4 are independently selected from C1-C4 alkyl groups and C1-C4 alkoxy groups, wherein Formula 3 R1, R2, R3 and R4 are independently selected from hydrogen, C1-C4 alkyl groups and C1-C4 alkoxy groups, and wherein is selected from 2,4-pentanedione, 2,2,6,6,-tetramethylheptane-3,5-dione, 1,3-propanedione, 1,3-butanedione, 3,5-heptanedione, 1,1,1-trifluoro-2,4-pentanedione, 1,1,1,5,5,5-hexafluoro-2,4-pentanedione and 2,2-dimethyl-3,5-hexanedione.