Abstract: A treatment liquid composition for semiconductor production including: a quaternary ammonium hydroxide; and a first organic solvent dissolving the quaternary ammonium hydroxide, the first organic solvent being a water-soluble organic solvent having a plurality of hydroxy groups, wherein a water content in the composition is no more than 1.0 mass % on the basis of the total mass of the composition; contents of Na, Mg, Al, K, Ca, Ti, Cr, Mn, Fe, Ni, Cu, and Zn in the composition are each no more than 100 mass ppb on the basis of the total mass of the composition; and a content of Cl in the composition is no more than 100 mass ppb on the basis of the total mass of the composition.

Abstract: A single crystal silicon plate-shaped body as cut out from an upper portion of a straight body portion of a CZ method single crystal silicon ingot has an interstitial oxygen concentration in a crystal is 25 ppma to 45 ppma and a substitutional carbon concentration is 0.5 ppma or less in a radial center. In the radial center, oxygen precipitates are not observed in a bulk in an image of 200,000 times by a transmission electron microscope, and after heating the single crystal silicon plate-shaped body at 950° C. for 60 minutes, oxygen precipitates are observed in an image of the 200,000 times, and a shape of the oxygen precipitates is observed in a polyhedral structure in an image of 2,000,000 times.

Abstract: A single crystal silicon plate-shaped body as cut out from an upper portion of a straight body portion of a CZ method single crystal silicon ingot has an interstitial oxygen concentration in a crystal is 25 ppma to 45 ppma and a substitutional carbon concentration is 0.5 ppma or less in a radial center. In the radial center, oxygen precipitates are not observed in a bulk in an image of 200,000 times by a transmission electron microscope, and after heating the single crystal silicon plate-shaped body at 950° C. for 60 minutes, oxygen precipitates are observed in an image of the 200,000 times, and a shape of the oxygen precipitates is observed in a polyhedral structure in an image of 2,000,000 times.

Abstract: In a process for producing a silicon single crystal in which carbon is incorporated in order to inhibit crystal defects, provided is a process which easily allows carbon to be mixed and dissolved into a silicon melt. The process for producing a silicon single crystal, which involves allowing a silicon single crystal to grow during its pulling-up from the silicon melt held in a crucible, uses as at least part of a silicon raw material, crushed materials of a polycrystalline silicon rod produced by Siemens process that are obtained by crushing an end of the rod in the vicinity contacting a carbon core wire holding member.

Abstract: In a process for producing a silicon single crystal in which carbon is incorporated in order to inhibit crystal defects, provided is a process which easily allows carbon to be mixed and dissolved into a silicon melt. The process for producing a silicon single crystal, which involves allowing a silicon single crystal to grow during its pulling-up from the silicon melt held in a crucible, uses as at least part of a silicon raw material, crushed materials of a polycrystalline silicon rod produced by Siemens process that are obtained by crushing an end of the rod in the vicinity contacting a carbon core wire holding member.

Abstract: The invention relates to plants and their progeny with improved morphogenesis in a variety of organs; to a method for producing the plants; and to a method for producing calli.

Abstract: The invention relates to plants and their progeny with improved morphogenesis in a variety of organs; to a method for producing the plants; and to a method for producing calli.

Abstract: The invention relates to plants and their progeny with improved morphogenesis in a variety of organs; to a method for producing the plants; and to a method for producing calli.

Abstract: The invention provides a method for producing a transgenic plant, as well as the plant produced from the method and the progeny of the plant. The method comprises transforming a cell of a plant with an exogenous spermidine synthase coding sequence, expressing the exogenous spermidine synthase coding sequence in the transformed cell, and generating a plant from the transformed cell. The transgenic plant has improved environmental stress tolerance against at least two environmental stresses selected from drought stress, herbicidal stress, oxidation stress, cold stress, osmotic stress, and salt stress as compared to a plant of the same species lacking the exogenous spermidine synthase coding sequence.

Abstract: The invention provides a method for producing a transgenic plant, as well as the plant produced from the method and the progeny of the plant. The method comprises transforming a cell of a plant with an exogenous spermidine synthase coding sequence, expressing the exogenous spermidine synthase coding sequence in the transformed cell, and generating a plant from the transformed cell. The transgenic plant has improved environmental stress tolerance against at least two environmental stresses selected from drought stress, herbicidal stress, oxidation stress, cold stress, osmotic stress, and salt stress as compared to a plant of the same species lacking the exogenous spermidine synthase coding sequence.

Abstract: The invention relates to plants and their progeny with improved morphogenesis in a variety of organs; to a method for producing the plants; and to a method for producing calli.

Abstract: The invention relates to plants and their progeny with improved morphogenesis in a variety of organs; to a method for producing the plants; and to a method for producing calli.

Abstract: The invention relates to plants and their progeny with improved morphogenesis in a variety of organs; to a method for producing the plants; and to a method for producing calli.

Abstract: The present invention relates to isolated plant-derived polyamine metabolism-related enzyme genes characterized in that their level of expression changes when exposed to environmental stress; antisense DNA or antisense RNA to such genes; plants and their progeny having improved environmental stress tolerance, in which such genes are retained in a stable manner; methods for producing such plants, and methods for producing calli of such plants; method for selecting transformed plants which grow improved more than plants lacking an exogenous polyamine metabolism-related enzyme gene; and microorganims and plants which are transformed by such genes

Abstract: The present invention relates to isolated plant-derived polyamine metabolism-related enzyme genes characterized in that their level of expression changes when exposed to environmental stress; antisense DNA or antisense RNA to such genes; plants and their progeny having improved environmental stress tolerance, in which such genes are retained in a stable manner; methods for producing such plants, and methods for producing calli of such plants; method for selecting transformed plants which grow improved more than plants lacking an exogenous polyamine metabolism-related enzyme gene; and microorganims and plants which are transformed by such genes

Abstract: The invention relates to plants and their progeny with improved morphogenesis in a variety of organs; to a method for producing the plants; and to a method for producing calli.