Abstract: A gene that controls epidermal bladder cell formation is isolated and identified. Specifically, a gene involved in an epidermal bladder cell formation control action is identified by: recognizing that a plant body with remarkably reduced epidermal bladder cells appears by performing EMS mutagenesis treatment on seeds; and comparing genomic DNA of the mutant and wild-type genomic DNA.

Abstract: The present invention provides a thermoelectric conversion module, comprising plural first electrode films (11, 12, 13) formed apart from each other on the top surface of an insulating body (10), plural p- and n-type thermoelectric semiconductor element films (16, 19) and (17, 18) formed thereon, which are arranged apart from each other so that p- and n-type thermoelectric semiconductor element films alternate with each other, and second electrode films (20) connecting p-type thermoelectric semiconductor element film (19) and n-type thermoelectric semiconductor element film (18) over the gaps between the first electrode films; and a terminal electrode is connected to each of the p-and n-type thermoelectric semiconductor element film (16, 17) at the end; and a production method thereof.

Abstract: This invention relates to a pot plant stand which purifies the air by passing the air through soil holding a plant root and an exchangeable plant pot used for the stand. The pot plant stand having an air cleaning function, which can exchange the plant pot without grubbing up the soil, which can cause a large quantity of air to pass through the soil, and which is easy to maintain is obtained.

Abstract: Plant stand which consists of a planter 21, a water reservoir 15 and an elastic seal 24, air intake pipes 16, an air pipe 9 with a fan 18. The planter has water holes 25 on the bottom, and air holes 26 on the side. The reservoir has an opening to hold the planter, and once the planter is in place a space is made between the reservoir and planter. The seal is flexible making it airtight between the reservoir and planter. The air intake pipes have their inlets at the upper part of the water reservoir. The air pipe is connected to the air intake pipe and has a fan to circulate air. It is effective for the plant stand to be equipped with a light source for illuminating plant and promoting photosynthesis. The light source also serves as a sterilizer of indoor air.