This paper describes a model for the spatial variation of the elastic modulus of parallel strand lumber PSL that is based on bending experiments and also describes a validated stochastic computational model that incorporates orthotropic elasticity and uncertainty in strand geometry and material properties. The PSL exhibits significant variability both within members and between members, but thi...

G. S. Abrams, (I J C. E. Adolphsen, (2) D. Averill, (3) J. Ballam, <4> B. C. Barish, (5 ) T. Barklow, (4 ) B. A. Barnett, (6 ) J. Bartelt, (4 ) S. Bethke, 0 J D. Blockus, (3) G. Bonvicini, <7> A. Boyarski, (4 ) B. Brabson, (JJ A. Breakstone, (8 ) F. Bulos, <4> P. R. Burchat, (2) D. L. Burke, (4 ) R. J. Cence, (8 ) J. Chapman, (7 ) M. Chmeissani, (7 ) D. Cords, <4> D. P. Coupal, <4 > P. Dauncey,...

A recent analysis of R&D productivity suggests that there are grounds for 'cautious optimism' that the industry 'turned the corner' in 2008 and is 'on the comeback trail'. We believe that this analysis is flawed and most probably wrong. We present an alternative analysis of these same data to suggest that the industry is not yet 'out of the woods' and suggest that many of the systemic issues af...

From the still life with a bowl of fruit to scenes of wildlife in the woods, from Michelangelo’s David to Damien Hirst’s Verity, biology often provides the shapes, forms, colours and concepts that most inspire visual artists to create their own representation of life. Apart from the unique case of Leonardo da Vinci, the scientific and the artistic eye cast on living things have rarely resided i...

DLOUhá, J., ALMÉRAS, T., CLAIR, B., GRIL, J., hORáčEK, p.: Biomechani-cal performances of trees in the phase of active reorientation. Acta univ. agric. et silvic. Mendel. Brun., 2008, LVI, No. 5, pp. 00–00 The purpose of the present paper was to investigate the accumulation of growth stresses in a cross section of a tree in active reorientation process and its biomechanical performances i.e. up...

As a routine wood source for a pulp mill, recent past studies have shown that intensivelymanaged, short-rotation hardwood plantations are not cost effective. The objective of this study ’ was to determine if these plantations may be cost effective as “green” inventory, replacing some portion of high cost remote woodyard inventory. Three southeastern pulp mills were used as case studies in a net...

UNLABELLED BACKGROUND The default international accounting rules estimate the carbon emissions from forest products by assuming all harvest is immediately emitted to the atmosphere. This makes it difficult to assess the greenhouse gas (GHG) consequences of different forest management or manufacturing activities that maintain the storage of carbon. The Intergovernmental Panel on Climate Chang...

the influence of initial moisture content on wood decay at different levels of atmospheric oxygen concentration was studied. three fungi, coriolus versicolor (c. versicolor) a white rot, coniophora puteana (c. puteana) a brown rot, and chaetomium globosum (c. globosum) a soft rot, were chosen. the mycelia of the fungi were inoculated in to mini blocks of fagus sylvatica (beech) and pinus sy...