Abstract: The present invention relates to a method for reducing to metallic chromium the chromium oxide material found in slag formed in an electric arc furnace during the process of making stainless steel in that furnace. The chromium oxide content of the slag can be effectively reduced to a relatively low concentration by maintaining the slag in a liquid phase while at the same time blowing into the furnace via a carrier gas certain amounts of powdered aluminum dross. In particular, powdered aluminum dross can be blown into the furnace in amounts ranging from about 10 to 20 kg of dross per ton of molten steel in the furnace. Alternatively, powdered aluminum dross can be blown into the furnace in a thrown-in amount which satisfies the equation: 0.5?[Thrown-In Al dross (ton)×100]/[Slag in Furnace (ton)×Cr2O3 (wt %)]?1.0. Via such a method used during the stainless steel making process, the recovery of valuable chromium and the rate of chromium oxide reduction can be increased.

Abstract: A multimedia reproduction apparatus in a mobile communication terminal comprising: a data parsing section for dividing multimedia data into video data and other data and then parsing the video data and the other data; a video data processing section for decoding the parsed video data; a media delay output controller for delaying the other data parsed by and transmitted from the data parsing section according to buffering information of the video data processing section, for outputting the delayed data, and for generating a synchronizing signal; an audio data processing section for decoding and outputting audio data from among the other data output from the media delay output controller; a video data output section for reading and outputting the video data; and a synchronizing section for synchronizing and outputting the video data.

Abstract: The present invention relates to novel cyclotriphosphazene derivatives represented by Formula (1) and a preparation method thereof wherein HNA is an amino acid group selected from glycine group(—NHCH2COO−), aminomalonic acid group(—NHCH(COO−)2), aspartic acid group (—NHCH(CH2COO−)COO−) and glutamic acid group (—NHCH(CH2CH2COO−)COO−), m is a repeating unit of poly(alkoxyethyleneglycol) selected from 2, 7, 12 and 16, and n is an integer representing number of alkyl carbons and selected from 0, 1, and 3.

Abstract: The present invention provides a novel thermosensitive cyclotriphosphazene-platinum complex conjugates represented by Formula 1, wherein m is a repeating unit of poly(alkoxyethylene glycol) selected from the integers 2, 7 and 12; n represents the length of the alkyl chain selected from the integers 0, 1, 2 and 3; x represents the length of the anionic amino acid residue selected from the integers 0 (amino malonic acid derivatives), 1 (aspartic acid derivatives) and 2 (glutamic acid derivatives); A2 is a bidentate chelating diamine selected from the group consisting of 2,2-dimethyl-1,3-propanediamine (dmpda), trans(±)-1,2-diaminocyclohexane (dach) and 1,1-diaminomethylcyclohexane (dmach).

Abstract: The present invention relates to novel biodegradable polyphosphazenes represented by Formula 1 and a preparation method thereof. Polyphosphazenes of the present invention not only have thermosensitivity and biodegradability simultaneously, but also their phase transition temperature and degradation rate can be controlled.