Abstract: A precursor raw material for the PAN-based carbon fibers represented by Formula (I) is provided. In Formula (I), R is methyl, ethyl or propyl, x+z=0.5-20.0 mol %, z?0.5 mol %, y=99.5-80.0 mol % and x+y+z=100 mol %. The invention also provides a PAN-based oxidized fiber and a PAN-based carbon fiber prepared by the precursor raw material for the PAN-based carbon fibers.

Abstract: An apparatus for packet fragment reassembly includes a memory and a fragment processing block coupled to the memory. The memory caches information contained in the headers of a plurality of packet fragments, wherein the plurality of packet fragments are identified as belonging to a particular packet. The fragment processing block directly performs operations to each packet fragment according to the information cached in the memory and a predetermined standard, wherein the information cached in the memory is used to track whether all packet fragments associated with the particular packet have been received at the apparatus.

Abstract: A phosphine-based polymer having Formula (I) is provided. The invention also provides a poly(lactic acid) material including poly(lactic acid) and the disclosed phosphine-based polymer, wherein the phosphine-based polymer has a weight ratio of 0.05-10 parts by weight, based on 100 parts by weight of the poly(lactic acid).

Abstract: A phosphine-based polymer having Formula (I) is provided. The invention also provides a poly(lactic acid) material including poly(lactic acid) and the disclosed phosphine-based polymer, wherein the phosphine-based polymer has a weight ratio of 0.05-10 parts by weight, based on 100 parts by weight of the poly(lactic acid).

Abstract: An aliphatic copolyester is provided. The aliphatic copolyester is prepared by polymerization of a first compound having formula I, a second compound having formula II, and a lactide, wherein a is 10-230, b, d and e have a ratio of 10-35:10-35:80-30, c is 1-4, and f is 1-10. The invention also provides a method of preparing the aliphatic copolyester.

Abstract: A method of genetically engineering a cell line capable of detecting bioactive cytokines or growth factors is provided. Cells lines produced by this method and methods of using these cell lines to detect bioactive cytokines or growth factors in a biological fluid are also provided.

Abstract: Mutant tumor necrosis factor proteins which retain full or near full capability to bind to a TNFR-p75 receptor while retaining only a limited capability to bind a TNFR-p55 receptor are provided. Methods of inhibiting toxicity induced by tumor necrosis factor by treating cells or tissues having a tumor necrosis factor receptor with these mutant human tumor necrosis factor proteins are also provided. Pharmaceutical compositions and methods of inhibiting systemic tumor necrosis factor induced toxicity in a patient undergoing antitumor TNF-.alpha. therapy with these compositions are also provided.