Results 201 to 210 of about 45,691 (235)
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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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Dilute acid pretreatment of softwoods
Applied Biochemistry and Biotechnology, 1998Selective thinning of forests in the western United States will generate a large, sustainable quantity of softwood residues that can be an attractive feedstock for fuel ethanol production. The major species available from thinning of forests in northern California and the eastern Rocky Mountains include white fir (Abies concolor), Douglas fir ...
Q. A. Nguyen +4 more
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Specific heat and thermal conductivity of softwood bark and softwood char particles☆
Fuel, 2003Abstract Very few data exist regarding the thermal properties of softwood bark and therein derived softwood chars. This work describes the measurement of specific heat and particle thermal conductivity of softwood (SW), softwood bark (SB) and therein derived softwood char (SC). Differential scanning calorimetery (DSC) was used to measure the specific
Murlidhar Gupta, Jin Yang, Christian Roy
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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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CONSOLIDATION OF SOFTWOOD ARTIFACTS
Studies in Conservation, 1971Consolidation of decayed wooden artifacts can be achieved by impregnation with epoxy prepolymer dissolved in a mixture of toluene and glycidyl ether and subsequent polymerization in situ. The principles of selecting the successful method of application are discussed, and the details of the procedure given.
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Heat‐treated softwood exposed to weathering
Journal of Applied Polymer Science, 2003AbstractScots pine samples, heat‐treated (225°C under steam) and reference (kiln‐dried), were exposed to natural weathering for 7 years in Espoo, Finland. The weathered and unweathered samples were examined with FTIR, UV resonance Raman, and 13C CPMAS NMR spectroscopies.
Nuopponen, Mari +6 more
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Economic Geography, 1934
T nHE growing international trade in wood, pulp, and paper between the countries of the world has made the question of the forest resources of the world, and especially the softwood resources of the world, a matter of common interest. This interest centers around the two continents-Europe and North America-where almost ninetenths of the world's ...
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T nHE growing international trade in wood, pulp, and paper between the countries of the world has made the question of the forest resources of the world, and especially the softwood resources of the world, a matter of common interest. This interest centers around the two continents-Europe and North America-where almost ninetenths of the world's ...
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1995
Table 4.1 gives an alphabetical list of the softwood species described, their natural geographic distribution, and main regions of cultivation. In all, 42 species from 13 genera are described.
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Table 4.1 gives an alphabetical list of the softwood species described, their natural geographic distribution, and main regions of cultivation. In all, 42 species from 13 genera are described.
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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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