Abstract: Provided is a hexagonal boron nitride powder that can achieve higher thermal conductivity when added as a filler to resin. A plasma treatment method of plasma-treating a hexagonal boron nitride powder under reduced pressure comprises: storing the hexagonal boron nitride powder in a treatment container; supplying a plasma generating gas into the treatment container and maintaining inside of the treatment container at a pressure lower than atmospheric pressure; applying high frequency waves to an electrode installed outside the treatment container while rotating the treatment container about a central axis of the treatment container as a rotation axis in a state in which the rotation axis of the treatment container is inclined with respect to horizontal, to plasma-treat the hexagonal boron nitride powder in the treatment container; and cooling one or both of the treatment container and the electrode during the plasma treatment.

Abstract: A method for raising leaf-and-stem vegetables and a light source device used in the method, which can make production cost of leaf-and-stem vegetables reduced and commercial value thereof enhanced by irradiating parts of leaf-and-stem vegetable with a light optimum therefor. The method for raising leaf-and-stem vegetables by irradiating the vegetables with light, includes a stem growth-inhibiting light source irradiating tops of the stems with light having a blue component light at high ratio, which inhibits the growth of stems, at least during an initial growth period when the stems and leaves become distinguishable from each other.

Abstract: A method for raising leaf-and-stem vegetables and a light source device used in the method, which can make production cost of leaf-and-stem vegetables reduced and commercial value thereof enhanced by irradiating parts of leaf-and-stem vegetable with a light optimum therefor. The method for raising leaf-and-stem vegetables by irradiating the vegetables with light, includes a stem growth-inhibiting light source irradiating tops of the stems with light having a blue component light at high ratio, which inhibits the growth of stems, at least during an initial growth period when the stems and leaves become distinguishable from each other.

Abstract: [Problem] It is an object to provide an unstretched film and a sheet that are excellent in an antistatic property and transparency, a resin composition that is used in producing the unstretched film or the sheet and a potassium ionomer that is contained in the composition. [Means for Solving Problem] Disclosed is a potassium ionomer of a polymer or a polymer composition that contains (a) an ethylene unit in the range of 30 to 60% by weight, (b) a propylene unit in the range of 30 to 60% by weight, (c) a butene unit in the range of 2 to 10% by weight, (d) a (meth)acrylic acid ester unit in the range of 0 to 10% by weight, and (e) a (meth)acrylic acid unit in the range of 5 to 15% by weight (with the total of the component units (a) to (e) being 100% by weight). The potassium ionomer has a potassium ion density in the range of 0.5 to 1.5 mmol/g.