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Relationships of density, microfibril angle, and sound velocity with stiffness and strength in mature wood of Douglas-fir

Creator:: Lachenbruch, Barbara, Johnson, G. R., Downes, G., and Evans, R.
Abstract:: The relative importance of density, acoustic velocity, and microfibril angle (MFA) for the prediction of the stiffness (MOE) and strength (MOR) has not been well established for Douglas-fir (Pseudotsuga menziesii). MOE and MOR of small clear specimens of mature wood were better predicted by density and velocity than by either...
Resource Type:: Article
Full Text:: sound velocity with stiffness and strength in mature wood of Douglas-fir B. Lachenbruch, G.R. Johnson

Damage Assessment of a Full-Scale Six-Story Wood-Frame Building Following Triaxial Shake Table Tests

Creator:: van de Lindt, John W., Gupta, Rakesh, Pei, Shiling, Tachibana, Kazuki, Araki, Yasuhiro, Rammer, Douglas, and Isoda, Hiroshi
Abstract:: In the summer of 2009, a full-scale midrise wood-frame building was tested under a series of simulated earthquakes on the world's largest shake table in Miki City, Japan. The objective of this series of tests was to validate a performance-based seismic design approach by qualitatively and quantitatively examining the building's...
Resource Type:: Article
Full Text:: ; Shiling Pei, M.ASCE3; Kazuki Tachibana4; Yasuhiro Araki5; Douglas Rammer, M.ASCE6; and Hiroshi Isoda7

Reduced wood stiffness and strength, and altered stem form, in young antisense 4CL transgenic poplars with reduced lignin contents

Creator:: Voelker, S. L., Lachenbruch, Barbara, Meinzer, Frederick C., and Strauss, S. H.
Abstract:: • Reduced lignin content in perennial crops has been sought as a means to improve biomass processability for paper and biofuels production, but it is unclear how this could affect wood properties and tree form. • Here, we studied a nontransgenic control and 14 transgenic events containing an antisense 4-coumarate:coenzyme...
Resource Type:: Article
Full Text:: lignin contents Steven L. Voelker 1, Barbara Lachenbruch 1, Frederick C. Meinzer2 and Steven H

Tyloses and phenolic deposits in xylem vessels impede water transport in low-lignin transgenic poplars: a study by cryo-fluorescence microscopy

Creator:: Kitin, Peter, Voelker, Steven L., Meinzer, Frederick C., Beeckman, Hans, Strauss, Steven H., and Lachenbruch, Barbara
Abstract:: Of 14 transgenic poplar genotypes (Populus tremula × Populus alba) with antisense 4-coumarate:coenzyme A ligase that were grown in the field for 2 years, five that had substantial lignin reductions also had greatly reduced xylem-specific conductivity compared with that of control trees and those transgenic events with small reductions in...
Resource Type:: Article
Full Text:: ] Peter Kitin*, Steven L. Voelker, Frederick C. Meinzer, Hans Beeckman, Steven H. Strauss, and Barbara

Spring temperature responses of oaks are synchronous with North Atlantic conditions during the last deglaciation

Creator:: Voelker, Steven L., Noirot-Cosson, Paul-Emile, Stambaugh, Michael C., McMurry, Erin R., Meinzer, Frederick C., Lachenbruch, Barbara, and Guyette, Richard P.
Abstract:: Paleoclimate proxies based on the measurement of xylem cell anatomy have rarely been developed across the temperature range of a species or applied to wood predating the most recent millennium. Here we describe wood anatomy-based proxies for spring temperatures in central North America from modern bur oaks (Quercus macrocarpa Michx.)....
Resource Type:: Article
Full Text:: synchronous with North Atlantic conditions during the last deglaciation STEVEN L. VOELKER,1,5 PAUL-EMILE

Antisense down-regulation of 4CL expression alters lignification, tree growth and saccharification potential of field-grown poplar

Creator:: Voelker, Steven L., Lachenbruch, Barbara, Meinzer, Frederick C., Jourdes, Michael, Ki, Chanyoung, Patten, Ann M., Davin, Laurence B., Lewis, Norman G., Tuskan, Gerald A., Gunter, Lee, Decker, Stephen R., Selig, Michael J., Sykes, Robert, Himmel, Michael E., Kitin, Peter, Shevchenko, Olga, and Strauss, Steven H.
Abstract:: Transgenic down-regulation of the Pt4CL1 gene family encoding 4-coumarate:coenzyme A ligase (4CL) has been reported as a means for reducing lignin content in cell walls and increasing overall growth rates, thereby improving feedstock quality for paper and bioethanol production. Using hybrid poplar (Populus tremula 3 Populus alba), we applied this...
Resource Type:: Article
Full Text:: Alters Lignification, Tree Growth, and Saccharification Potential of Field-Grown Poplar1[W][OA] Steven L

An Annual Pattern of Native Embolism in Upper Branches of Four Tall Conifer Species

Creator:: McCulloh, Katherine A., Johnson, Daniel M., Meinzer, Frederick C., and Lachenbruch, Barbara
Abstract:: Premise of the study: The Pacific Northwest of North America experiences relatively mild winters and dry summers. For the tall coniferous trees that grow in this region, we predicted that loss in the hydraulic conductivity of uppermost branches would be avoided because of difficulty reversing accumulated emboli in xylem that...
Resource Type:: Article
Full Text:: Science Foundation grant IBN 09- 19871. We are very grateful to L. Bernart, M. Loloum, and S. du Peloux

Thermal Degradation of Lateral Yield Strength of Nailed Wood Connections

Creator:: Sinha, Arijit, Gupta, Rakesh, and Nairn, John A.
Abstract:: This study investigated the effect of exposure to elevated temperature on the yield strength of single-shear nail connections when subjected to lateral loading. Solid sawn lumber and laminated veneer lumber were used as framing members and two different thicknesses of both oriented strand board and plywood were used as the...
Resource Type:: Article
Full Text:: N IV E R SI T Y o n 06 /1 9/ 17 . C op yr ig ht A SC E . F or p er so na l u se o

Cradle-to-Gate Life-Cycle Inventory and Impact Assessment of Wood Fuel Pellet Manufacturing from Hardwood Flooring Residues in the Southeastern United States

Creator:: Reed, Daniel, Bergman, Richard, Kim, Jae-Woo, Taylor, Adam, Harper, David, Jones, David, Knowles, Chris, and Puettmann, Maureen E.
Abstract:: In this article, we present cradle-to-gate life-cycle inventory (LCI) data for wood fuel pellets manufactured in the Southeast United States. We surveyed commercial pellet manufacturers in 2010, collecting annual production data for 2009. Weighted-average inputs to, and emissions from, the pelletization process were determined. The pellet making unit process was...
Resource Type:: Article
Full Text:: the environment (Hunt et al. 1992, Curran 1996). The International Organization for Standardization

Thermal degradation of bending properties of structural wood and wood-based composites

Creator:: Sinha, Arijit, Gupta, Rakesh, and Nairn, John A.
Abstract:: Wood and wood-based composites are being used extensively in single-family residential dwellings. Therefore, it is important to categorize their response when exposed to elevated temperatures for a sustained period of time. In fire-resistant design for wood structures, the main goal is to ensure that enough structural integrity is maintained, during...
Resource Type:: Article
Full Text:: . Specimen Span-to- SG size Depth depth ratio Material Symbols Species (COV%) (mm=mm) (mm) (l/d) Solid sawn

ScholarsArchive@OSU

Relationships of density, microfibril angle, and sound velocity with stiffness and strength in mature wood of Douglas-fir

Damage Assessment of a Full-Scale Six-Story Wood-Frame Building Following Triaxial Shake Table Tests

Reduced wood stiffness and strength, and altered stem form, in young antisense 4CL transgenic poplars with reduced lignin contents

Tyloses and phenolic deposits in xylem vessels impede water transport in low-lignin transgenic poplars: a study by cryo-fluorescence microscopy

Spring temperature responses of oaks are synchronous with North Atlantic conditions during the last deglaciation

Antisense down-regulation of 4CL expression alters lignification, tree growth and saccharification potential of field-grown poplar

An Annual Pattern of Native Embolism in Upper Branches of Four Tall Conifer Species

Thermal Degradation of Lateral Yield Strength of Nailed Wood Connections

Cradle-to-Gate Life-Cycle Inventory and Impact Assessment of Wood Fuel Pellet Manufacturing from Hardwood Flooring Residues in the Southeastern United States

Thermal degradation of bending properties of structural wood and wood-based composites

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