Abstract: The present invention relates to a method for predicting the physical properties of polymers. More specifically, the present invention relates to a method for predicting the processability of polymers using a molecular weight distribution curve.

Abstract: The present invention provides a method for preparing a polyolefin having a broad molecular weight distribution. More specifically, the present invention provides a method for preparing a polyolefin having a broad molecular weight distribution and an ultra-high molecular weight in which an organometallic complex containing a specific Ti—Al complex structure is used as a molecular weight controller (i.e., molecular weight enhance) in the polymerization of an olefin monomer, thereby enabling both solution polymerization and slurry polymerization, particularly enabling the molecular weight distribution to be more readily and effectively controlled.

Abstract: A polishing pad conditioning apparatus according to an example embodiment of the present inventive concept includes an apparatus body, a pivot arm provided on the apparatus body and including a housing having an internal space and provided at a distal end portion of the pivot arm and a head unit disposed at the distal end portion of the pivot arm. The head unit includes: a rotary motor provided in the internal space of the housing, the rotary motor including a rotary shaft; a foreign material blocking member connected to the rotary shaft; a disk holder connected to the rotary shaft; and a conditioning disk coupled to the disk holder. The foreign material blocking member includes a fluid flow groove configured to guide a movement of fluid for preventing foreign objects from entering the housing on an outer surface of the foreign material blocking member.

Abstract: The present invention relates to a method for predicting the physical properties of polymers. More specifically, the present invention relates to a method for predicting the processability of polymers using a molecular weight distribution curve.

Abstract: The present invention relates to a method for predicting the physical properties of polymers. More specifically, the present invention relates to a method for predicting long-term stability of polymers using a molecular weight distribution curve.

Abstract: In the present invention, there is provided an olefin polymer which has excellent processability and dimensional stability and thus is useful for hollow molding of pipes or the like.

Abstract: The present invention relates to polyolefin powder for preparing fiber, and fiber comprising the same. According to the present invention, provided is polyolefin, which exhibits a high molecular weight range and narrow molecular weight distribution and in which the formation of a gel deteriorating the quality of fiber is reduced. Therefore, by using the polyolefin, the present invention exhibits molecular weight, density and narrow molecular weight distribution, which are equivalent to those of conventional polyolefin, but the number of gels having a large particle diameter is remarkably reduced, and therefore, the present invention can provide fiber having excellent tenacity and tensile strength half-life.

Abstract: The present disclosed relates to a decoration element and a method for preparing the decoration element. decoration element has dichroism expressing different colors depending on a viewing direction, and has improved visibility of the dichroism.

Abstract: A method of preparing a supported metallocene catalyst capable of more effectively preparing a polyolefin which may be preferably used for blow molding, etc., because its molecular weight distribution is such that polymer elasticity is increased to improve swell, is provided.

Abstract: The disclosed relates to a decoration element and a method for preparing the decoration element. The decoration element has dichroism expressing different colors depending on a viewing direction, and has improved visibility of the dichroism.

Abstract: Provided is a substrate cleaning apparatus including: a cleaning bath configured to accommodate a substrate having a first surface and a second surface; a substrate support configured to support the substrate; first and second nozzle bars provided in the cleaning bath to be rotatable in a plane parallel with the substrate, each of the first and the second nozzle bars including a passage; a plurality of nozzles provided along a longitudinal direction of each of the first and the second nozzle bars and configured to spray the cleaning solution from the passage of each of the first and the second nozzle bars to the substrate; and first and second brushes, the first brush provided on a first side of the substrate and configured to clean the first surface and the second brush provided on a second side of the substrate and configured to clean the second surface of the substrate.

Abstract: A non-volatile memory device includes a memory cell array region in which memory cells are vertically stacked on a substrate and a page buffer region in which first and second page buffers are arranged. A first distance between the memory cell array region and the first page buffer is shorter than a second distance between the memory cell array region and the second page buffer. The first page buffer includes a first transistor driven in response to a first control signal. The second page buffer includes a second transistor driven in response to a second control signal corresponding to the first control signal. At least one of design constraints and processing constraints with respect to the first and second transistors is different.

Abstract: In one aspect, the present invention provides an isolated mutant insulin degrading enzyme (IDE) having an amino acid sequence that is at least 90% identical to SEQ ID NO:1 over its entire length and comprises at least one amino acid substitution at any of amino acid residues 332, 339, 341, 359, 360, 361, 374, 429, 609, 898, 899 or 901 of the sequence. The mutant IDE has a differential activity relative to that of wild-type IDE. Also provided is a polynucleotide encoding the polypeptide of the invention.