Abstract: In making a particle board by forming a mat from particles obtained from a wooden material and pressing the mat, a particle board light in weight and excellent in strength, dimensional stability and surface properties can be made at a low cost by using a wooden material of low specific gravity and carrying out the press of the particle board with a high compression ratio in mat thickness before and after the press.

Abstract: In making a particle board by forming a mat from particles obtained from a wooden material and pressing the mat, a particle board light in weight and excellent in strength, dimensional stability and surface properties can be made at a low cost by using a wooden material of low specific gravity and carrying out the press of the particle board with a high compression ratio in mat thickness before and after the press.

Abstract: An afforestation and/or reforestation business system, which is capable of devising and evaluating an afforestation and/or reforestation business is provided. The system includes a communication system capable of communicating between a terminal at the business center and a terminal at respective local sites, a first database for storing records related to the afforestation and/or reforestation business, a second database for storing records related to tree species and the site information, a site determining portion for evaluating the proposed afforestation and/or reforestation sites using estimated carbon dioxide absorption amounts to be obtained by executing an afforestation and/or reforestation business, and a business plan determining portion for determining an afforestation and/or reforestation business by selecting an appropriate tree species and an appropriate area that can obtain the greatest profit and the greatest carbon absorption amount from the site.

Abstract: An aqueous water repellent useful in the treatment of substrates of lignocellulose-origin materials or the like is characterized by comprising the product of co-hydrolytic condensation of (A) 100 parts by weight of an organosilicon compound having the formula: (R1)a(OR2)bSiO(4-a-b)/2??(1) wherein R1 is alkyl, R2 is alkyl, 0.75?a?1.5, 0.2?b?3 and 0.9<a+b?4, and (B) 0.5-49 parts by weight of an amino-containing alkoxysilane having the formula: R3R4NR5—SiR6n(OR2)3-n??(2) wherein R3 and R4 are H or alkyl or aminoalkyl, R5 is a divalent hydrocarbon group, R6 is alkyl, and n is 0 or 1, or a partial hydrolyzate thereof in the presence of an organic acid or inorganic acid.

Abstract: Terminal buds or axillary buds of trees of genus Swietenia is cultured on a B5 medium containing 3-indole butyric acid (IBA) and benzylaminopurine (BAP) or its modified medium to induce multiple shoots; the multiple shoots are transplanted to a similar medium containing IBA and BAP to the above and cultured by liquid gyratory culture to efficiently propagate the multiple shoots; then the propagated multiple shoots are transplanted to a similar medium containing IBA and BAP to the above and subjected to liquid stationary culture to efficiently elongate a large number of the shoots; and the elongated shoots are transplanted to a similar medium containing IBA to the above to promote shoot elongation and rooting, thereby producing a large number of young plantlets of trees of genus Swietenia.

Abstract: By extracting hot water-insoluble and ethanol-insoluble components of the fruit body of Agaricus blazei Murill belonging to the genus Agaricus with 5% ammonium oxalate aqueous solution, degrading the extract with hydrochloric acid and then purifying the acid-degraded product through gel permeation and affinity chromatography, there are obtained the antitumor-active substances having a weight-average molecular weight of 38.times.10.sup.4 daltons and a dispersion degree of 2.3, a weight-average molecular weight of 29.times.10.sup.4 daltons and a dispersion degree of 7.3, a weight-average molecular weight of 2.4.times.10.sup.4 daltons and a dispersion degree of 4.1, and a weight-average molecular weight of 2.0.times.10.sup.4 daltons and a dispersion degree of 3.6. These substances exhibit a significant antitumor effect against solid tumor, when determined by gel permeation.

Abstract: Plantlets of trees of genus Gmelina can be efficiently regenerated on a large scale by culturing shoot apexes of trees of genus Gmelina on a B5 medium or its modified medium, each containing benzylaminopurine (BAP) or indole-3-butyric acid (IBA) together with BAP as plant growth regulators, thereby inducing and proliferating multiple shoots each having a large number of either definite buds or adventitious buds or both, then producing a large number of shoots from the resulting multiple shoots, transplanting the shoots to a B5 medium or its modified medium containing no plant growth regulator or containing both BAP and IBA as plant growth regulators; and the regenerated plantlets can be efficiently acclimatized to outdoor conditions by transplanting the regenerated plantlets to a mixture of river sands and crushed brick pieces in a mixing ratio of 1:1 by volume and acclimatizing the transplanted plantlets to outdoor conditions in an acclimatization box; and in this manner, trees of genus Gmelina can be propag

Abstract: A process for the continuous production of a surface-consolidated lumber, in which the surface layer of a lumber to be treated is hardened and consolidated, is provided. In this process, a lumber to be treated is coated with a thermosetting resin and is then fed between hot-pressing rolls in a plurality of pairs of hot-pressing rolls, and the lumber is continuously heat-compressed between the hot-pressing rolls and simultaneously the thermosetting resin is cured, whereby the surface of the lumber is hardened and consolidated.

Abstract: A method is disclosed for preparing an immobilized microorganism-complex having controlling activity against plant pathogenic microorganisms. The method comprises adding an inorganic salt of a polyvalent metal to a liquid containing microorganism cells antagonistic to plant pathogenic microorganisms, drying the resulting microorganism cells so as to obtain a powder, mixing the powdered microorganism cells with particles of humic acid obtained by extraction from compost to obtain aggregates of the microorganism cells, mixing the aggregates with an aqueous carrageenan solution, and then drying the resulting mixture.

Abstract: A distinctive Dogwood variety of the Cornus florida L. genus and species exhibits an upright growth pattern and is easily cultivated, with improved mildew resistance, more upright carriage, and increased size of inflorescence including involucre, as compared to either the `Cloud Nine` or `Cherokee Chief` varieties.