The effects of Trichoderma spp. on wood degradation with Fomitopsis palustris and Trametes versicolor were examined. Japanese white birch (Betula platyphylla var. japonica) blocks were covered with four Trichoderma spp. immobilized on charcoalparticles (pH≒8), and exposed to the two basidiomycetes at 25 oC for 12 weeks to measure block mass losses. ANCT-05013 of Trichoderma spp. gave the strongest wood degradation inhibition. The decrease in mass losses without Trichoderma spp. was 51 - 80 %, while with the strain, it was only 3 - 6%.

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The inhibitory effects of the rose oil (Kishida chemical, Japan) and four main volatile components of damask rose oil, phenylethanol, benzyl alcohol, geraniol and nerol on the growth of Cladosporium spp. and Aureobasidium spp. were examined with direct contact experiments using agar-medium dilution method. Consequently,MIC (Minimum inhibitory concentration) of the oil for six strains (C. cladosporioides NBRC 4459, NBRC 6348, A. pullulans NBRC 6353 and three wild ones) were 0.1%(v/v) at 25℃. In addition, theMIC of the oil which were mixed with 5%(v/v) ethanol fell to less than 0.025%. On the other hand, geraniol and nerol showed higher antifungal activity than phenylethanol and benzyl alcohol for all strains.

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The wood degradation ability of seven kinds of edible mushroom that was cultivated artificially, was examined by measuring wood block mass losses of Japanese white birch and Todo fir at 25°C. Shiitake(Lentinula edodes ), Grifola frondosa, and Pholiota nameko cultivated only using hard-wood, showed remarkable mass losses of the white birch block in comparison with Flammulina velutipes, Hypsizigus marmoreus, Lyophyllum decastes, and Pleuriotuo eryngii cultivated using soft-wood. It was considered that the degradation ability of the former mushroom was higher than the latter. On the hand, there were few mass losses of the fir block in the all mushroom.

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In this short note, we give the generalizations of well known results in the disc algebra for example Widom-Devinatz theorem to a general uniform algebra.

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This July we mounted the automatic loading device on the Japanese white radish harvester that was delivered to a farm at Memuro town in the Tokachi district, Hokkaido, and experimented on the automatic loading device in the field of Japanese radish. In this paper we report the details about the following contents: (1) The mounted equipments on the harvester for the automatic loading. (2) The operation procedure about the automatic loading device. (3) The experimental result on the teaching-playback control. (4) The further development.

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Absorption of carbon dioxide in the concrete blocks containing scallop shells was investigated. As a result, following knowledge was confirmed. (1) Whether scallop shells were contained or not, the concrete blocks absorbed carbon dioxide much and fast during the hydration process of cement components over several months. (2) The principal material of the absorption power is calcium hydroxide formed as by-product of the hydration, and it changes to calcium carbonate at last by carbonation. (3) The sample blocks without scallop shell disappear the absorption power after completing of the solidification, because most of calcium hydroxide has run out. (4) The formation of calcium hydroxide is promoted and kept for several years even after solidification by adding of scallop shells to the concrete followed by much absorption of carbon dioxide. (5) But the absorption power of the blocks containing shells falls as the years go by, then disappears when all calcium hydroxide in the concrete changes to calcium carbonate.

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