This study was carried out to evaluate the dye decolorizing and detoxifying abilities of Irpex lacteus. The reduction in strength, measured as longitudinal compressive strength, due to pres teaming was related with the degradation of hemicelluloses, and was increased as steaming conditions were severe. This investigation confirms that the natural durability of bamboo in outdoor utilization is low. Treatability of dry wood pres teamed under pressure conditions more than 6 hours and green wood for 3 hours was similar to that enhanced by conventional incising. Regardless of wood species, extending the duration of initial vacuum more than 30 minutes did not affect treatability. These relationships make it possible to calculate intermediate heating times relative to experimentally observed heating times. These results indicate that the bacteria may have inhibited the stain fungi through competition for nutrients or space, rather than by antibiosis.
The fungus has mononematous Leptographium-like conidiophores that intergrade with synnematous Pesotum-like conidiophores, the latter previously described under the anamorph name Pesotum pini Mating tests on pine sapwood wafers demonstrated that O. In addition, the miniaturized enzyme assays reduced the amount of enzymes and reagents necessary. Fixation was monitored by the rates of reduction of hexavalent chromium to trivalent one, and optimal fixation time was estimated based on the results. From the results of this study, it was concluded that stress wave measurements could provide useful predictions of static bending properties and was a feasible method for machine stress grading of domestic softwoods and tropical hardwoods tested in this study. The bacteria reduced but did not completely inhibit fungal discoloration.
Blue stain of this timber is a serious problem for which an integrated control strategy is being developed. The fungus grew optimally at 25 C on 2% malt extract agar and showed a high level of tolerance to cycloheximide. Hence, heat treatment of Kapur and Japanese larch were believed to be not harmful to the aquatic ecosystem. Miniaturized fungal cultivation and enzyme assays were developed. The degree of improvement for treatability was increased with the extension of steaming period. Introduction Wood discoloration by sapstain and mold fungi is seriously reducing the market values of wood products.
The preservative leaching was greater when wood was exposed to water than when the wood was in contact with water-saturated soil. The difhsion coefficients at wood surface may be regarded as leaching coefficients. The results suggest that wood displacement during supercritical fluid impregnation can be controlled by altering process variables for a given species. Wood vinegar which contains guaiacol, cresol, 4-ethyl-2-methoxyphenol and 2,6-dimethoxyphenol showed a good antifungal activity, as noted by Ikergami et al. The crude extracts of T. The identified fungal species included 23 ascomycetes, 19 basidiomycetes, and 5 zygomycetes. Mold fungi, mostly Trichoderma species, were the most frequently isolating fungi, representing more than half of all isolates.
Comparison among species indicated that. Sapwood blocks of Japanese red pine Pinus densiflora and radiata pine Pinus radiata were exposed to each Penicillium species to examine their discoloration and growth patterns on these woods. The Leptographium has unusually short conidiophores and is morphologically similar to L. Shiri became the highest-grossing film in Korean history at the time. Two different nutrients, malt extract and sucrose, were used to produce different types of organic acids. A combination of traditional and molecular tools allowed a more detailed identification and diversity. Before establishing integrated control strategies of fungal discoloration, more complete knowledge about causal organisms is needed.
I was often the person who was on the receiving end of some of the initial either community backlash, or community pain, or community anger at whatever city decisions that we made. This study explored the effects of heating temperature and laminae thicknesses on the time required to heat the center of air-dried Paulownia tomentosa, Pinus sp. In summer, there were a substantial number of basidiomycetes probably because their spores germinate better at higher temperatures and humidity. One of the fungi that has been isolated from stained radiata pine sapwood in Korea is a Leptographium sp. The results suggest that wood displacement during supercritical fluid impregnation can be controlled by altering process variables for a given species. At a retention of 5. The deepest penetration of boron was observed in the longitudinal direction, followed by the radial and the tangential directions.
We consequently provide the name Leptographium koreanum sp. The difhsion coefficients at wood surface may be regarded as leaching coefficients. The coefficients of determination of fitted models were above 0. Further studies are required to identify these newly formed compounds. The results indicate that the limiting factor for boron diffusion rates at the given conditions was the diffusion through bound water. Work to maximum load was reduced most severely and rapidly from the onset of decay, while modulus of elasticity showed a much more moderate rate of reduction.
In the bioleaching, the metal removal was higher in sucrose media than malt extract. Penetration of preservative in both Japanese larch and ezo spruce was not deep because of shallow sapwood thickness of these species, so pretreatment such as incising should be considered if these species are treated with preservatives. Each specimen, including untreated and water-treated controls, was tested in static bending and in compression parallel to grain. Two Pesotum species from Japanese red pine were isolated only from logs. I actually think I might be the first woman of color deputy mayor, but I don't know that we really keep records that well. Some people asking Kim questions were upset with Murray, like before, and the meeting was about homelessness, like before. Heating times decreased as heating temperature increased and followed approximately power-function relationship.
The degree of improvement for treatability was increased with the extension of steaming period. The results of this research are encouraging and can be considered as a basis for further work using full-size lumber. Strains of the unknown Fusarium sp. Sap-staining fungi were isolated and identified using morphological and molecular methods. Pairing of strains from Japan with the ex-type culture of I. The data show that leaching of preservative chemicals from treated wood exposed to soil is influenced by the type of soil. Diversity of fungi inhabiting oil palm plantation in Malaysia 1.