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Showing 1 to 20 of 22 for “"radiata pine"”.
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Development of a simulation model for drying deformation in radiata pine boards
Drying deformation of radiata pine (Pinus Radiata D. Don) boards results in a great loss of revenue to the wood industry. A computer simulation model, which is capable of predicting the drying quality of radiata pine boards, was developed for pregrading and for setting of drying schedules in …
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Impacts of forest harvesting on the performance of soil-landscape modelling in a radiata pine forest, northern New Zealand
… of soil classes and target soil properties in a radiata pine forest. The research was conducted within southern Mahurangi Forest, an exotic, Pinus radiata-dominated plantation forest, situated on the Northland Peninsula, North Island, New Zealand. Three major sub-studies were conducted. In the …
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Understanding the Relative Importance of the Effects of Soluble and Insoluble Inhibitors on the Enzyme Digestibility of Steam Pretreated Radiata Pine
… accessible to enzymes. Softwoods, such as Pinus radiata, are amongst the most recalcitrant substrates towards enzymatic hydrolysis, typically, they require more severe pretreatment conditions and higher enzyme doses than hardwood or agricultural residues. Steam pretreatment is one simple and …
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The dynamics of litterfall in eucalypt woodland surrounding pine plantations
… decades, and in particular, the invasive species radiata pine (Pinus radiata D. Don) is of considerable concern. Radiata pine has a very limited distribution in the northern hemisphere in its natural range. Its utility in the timber and manufacturing industries, however, has lead to widespread …
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Two thermostable hemicellulases and their effects on wood pulps
… pulps and their effects on the bleachability of radiata pine kraft pulp were examined. The xylanase (two preparations) and mannanase had broad pH optima (6-7.5). The xylanases had temperature optima of 70°C (10 min assay) and the mannanase had an optimum of 80°C (10 min assay). All the cloned …
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Mechanisms of biogenic formaldehyde generation in wood
… emissions from flakes sampled from four Virginia pine (Pinus virginiana) trees. Emissions from never-heated specimens varied significantly among the four trees, ranging from 0.02 – 0.19 µg CH₂O/m³g dry wood. Heating (200°C, 1 hour), followed by chamber equilibration, resulted in significantly …
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Real Options Analysis of Carbon Forestry Under the New Zealand Emissions Trading Scheme
… increases the valuation of bareland on which radiata pine is to be planted with a single rotation or a perpetual series of rotations, especially for the case of flexible harvest forest management. The NZETS will very likely lengthen the rotation age of forests and increase forest carbon …
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Modelling the structural behaviour of the fold-away shelter
… maximum load capacity. The FEM results of the Radiata pine sheathed with F11 plywood, however, were 25% to 14% lower than the average values for maximum deflections and maximum load capacity. This thesis has demonstrated the process of generating FEMs that can be used as a tool to improve and …
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Effects of Felled Shortleaf Pine (Pinus Echinata Mill.) Moisture Loss on Oviposition Preferences and Survival of Sirex Nigricornis F. (Hymenoptera: Siricidae)
… F. (Hymenoptera: Siricidae) utilizes pine as its host during larval development. Females drill through pine bark to deposit eggs, a symbiotic fungus, <em>Amylostereum</em>, and phytotoxic mucus into the tree. In their native range, these insects are not viewed as primary pests because …
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Mechanical Properties of Lightweight Sandwich Panels with Corrugated Plywood Core
… were sandwich panel structures sourced from Radiata pine wood, a renewable and biodegradable raw material. Major objectives were to characterise, and develop models to predict, key mechanical properties of the novel corrugated plywood sandwich core and overall sandwich structures. Tensile, …
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Absorption of nitrogen from a liquid by pine bark
This study investigated the potential of Pinus radiata (pine) bark to absorb organic and ammoniacal-nitrogen, from an aqueous solution and from a dairy slurry, in the laboratory and in a field treatment of dairy slurry. Preliminary experiments indicated that the initial nitrogen concentration of …
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Isolation and characterization of an RNA polymerase III encoded gene of Pinus radiata and its use in pine transformation
… promoter (Act1) are currently used in Pinus radiata (pine) transformation. These heterologous promoters were adopted for pine transformation for want of an endogenous promoter tailored specifically for the needs of pine. These promoters may not perform to the same extent in pine as in their …
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Structural modelling of plasterboard-clad, light timber framed walls in fire
… The reduction in the mechanical properties of radiata pine in compression due to elevated temperature exposure was determined directly from tests. It was determined that there was a significant reduction in the mechanical properties in compression of moist timber specimens heated to 70DC, …
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Effects of environmental factors on wood decay micromorphology of Pinus radiata and Fagus sylvatica, and its significance for in-ground wood preservative performance
… conditions on in-ground performance of Pinus radiata D. Don. and Fagus sylvatica L. treated with new and traditional wood preservatives, determine wood decay type diversity, and test its significance on wood preservative performance and the ability of current decay classification nomenclature …
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