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Clonal Propagation of Softwoods
2005Softwoods or gymnosperms, which make up 60% of the forested areas of the world, are economically important as a source of lumber, pulp, and paper. Reforestation is a major activity worldwide and the potential benefits of using clonal planting stock have long been recognized. Tissue culture clonal methods or micropropagation is a newer approach that can
Trevor A, Thorpe +2 more
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SOFTWOOD COMPOSITES FOR CONSTRUCTION
Materials of the All-Russian scientific and practical conference "Modern machines, equipment and IT solutions for industrial complex: theory and practice", 2021The article deals with the issues of secondary use of industrial waste from the processing of soft hardwood wood. It is shown that the disposal of man-made waste in landfills is undesirable, and the use of wood waste to generate heat for heating is limited to the autumn-winter period.
A. Felluh +4 more
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Sinonasal Cancer and Exposure to Softwood
Acta Oto-Laryngologica, 1985In order to study the connection between occupation and sinonasal cancer we have reviewed the files and histological sections of 70 patients (24 females and 46 males) treated at the Department of Oto-rhino-laryngology, National Hospital of Norway. Detailed information concerning previous occupations was obtained by telephone interviews according to a ...
R, Voss +3 more
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Capillary pressure in softwoods
Wood Science and Technology, 1981To predict the capillary transport of free liquid during the drying of softwood, it is essential to have knowledge of capillary pressure as a function of moisture content. The dependence of the capillary pressure on the wood's moisture content is predicted with a mechanistic model and measured for isothermal moisture movement in the tangetial direction.
G. A. Spolek, O. A. Plumb
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SOFTWOOD GRAFTING IN JACKFRUIT
Acta Horticulturae, 2011Jackfruit is one of the tropical fruits with multiple uses. Huge variability exists in this crop due to seed propagation. Vegetative propagation will help in fixing the characters of superior types. A study on softwood grafting in jackfruit was conducted at the Department of Horticulture, University of Agricultural Sciences, Dharwad by taking up ...
null G. Aralikatti +4 more
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1981
Importing softwood is the largest section of the UK timber trade, in numbers of firms engaged, in volume of timber handled and in overall finance involved. (It accounts for approximately 54 per cent of the value of all timber imports.) The seasonal nature of the trade introduces its own problems, which are not reproduced to the same extent in the ...
Jack H. Leigh, Alan G. Randall
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Importing softwood is the largest section of the UK timber trade, in numbers of firms engaged, in volume of timber handled and in overall finance involved. (It accounts for approximately 54 per cent of the value of all timber imports.) The seasonal nature of the trade introduces its own problems, which are not reproduced to the same extent in the ...
Jack H. Leigh, Alan G. Randall
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Holzforschung, 1989
Essai d'un nouveau compose chimique a base de fer pour le marquage d'inscriptions sur divers bois ...
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Essai d'un nouveau compose chimique a base de fer pour le marquage d'inscriptions sur divers bois ...
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1980
The secondary xylem of the conifers is commonly called softwood. This term can at times be misleading, however, as many coniferous woods are physically quite hard while some angiosperm hardwoods are, in fact, quite soft (e.g. balsa). Softwoods are simpler and more homogeneous in structure than hardwoods.
B. G. Butterfield, B. A. Meylan
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The secondary xylem of the conifers is commonly called softwood. This term can at times be misleading, however, as many coniferous woods are physically quite hard while some angiosperm hardwoods are, in fact, quite soft (e.g. balsa). Softwoods are simpler and more homogeneous in structure than hardwoods.
B. G. Butterfield, B. A. Meylan
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Pyrolysis kinetics and product properties of softwoods, hardwoods, and the nut shell of softwood
Korean Journal of Chemical Engineering, 2016The pyrolysis of softwoods (Pinus (P.) densiflora, P. koraiensis), hardwoods (Quercus acutissima and Liriodendron tulipifera) and nut shell of P. koraiensis was investigated using a thermogravimetric analyzer and fixed bed reactor. Thermogravimetric analysis showed that the maximum decomposition temperature of each biomass was influenced by the ash ...
Young-Min Kim +6 more
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Delignification of softwood by ozonation
Pure and Applied Chemistry, 2009Ozonation of aspen sawdust of various moisture content (MC) values was investigated. Ozone consumption corresponding to the completion of the ozonation process was shown to be governed by the wood MC. Cellulose-containing material of a low (1–3 %) residual lignin content (LC) was produced under ozonation. It is proposed that ozone dissolved in water is
Nadezhda A. Mamleeva +3 more
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