Index Catalog // ScholarsArchive@OSU

Hygro-mechanical response of clear softwood specimens to compression under cyclic climate

Creator:: Guo, Ning
Abstract:: Hygro-mechanical effect is a general term applied to all phenomena that involves interaction between moisture content and mechanical characteristics of hygroscopic materials by analogy to thermo-mechanical effects. The hygromechanical effects include (but are not limited to) free shrinkage/swelling, effect of moisture on elastic modulus, strength, creep, failure mechanisms, and mechano...
Resource Type:: Masters Thesis
Full Text:: distribution accounted for Size [mm], # of specimens reference Wood beam reinforced by FRP

Rural community college fundraising : a multi-site case study exploring the characteristics and motivations of alumni supporters

Creator:: Wood, Jason S.
Abstract:: Fundraising in the 21st century is becoming an increasingly important component of rural community colleges' (RCCs) overall funding strategies. Alumni represent a significant population of potential college supporters. The problem facing rural community colleges involves fiscal viability through developing innovative fundraising practices and identifying emerging sources of additional revenue. The...
Resource Type:: Dissertation
Full Text:: AN ABSTACT OF THE DISSERTATION OF Jason S. Wood

Visualization and characterization of biofilm spatial distribution in porous media using x-ray computed microtomography

Creator:: Iltis, Gabriel C.
Abstract:: This work focuses primarily the development of methods for imaging microbial biofilms in opaque porous media using x-ray computed microtomography (CT). Two methods for evaluating biofilms in porous media are presented. The first focuses on the addition of silver-coated, hollow glass microspheres to a biofilm-containing micro-model. The silver-coated microspheres affix...
Resource Type:: Dissertation
Full Text:: technical assistance for experiments addressed in Chapter 4. Dr. Brian Wood provided technical assistance

Delimiting Species in the Mountaintops : New Trails for Studying Genomic Architecture and Sequencing Historical Specimens Uncover Hidden Diversity within the breve Species Group of Bembidion (Coleoptera : Carabidae)

Creator:: Sproul, John S.
Abstract:: Species are one of the foundational units upon which entire fields of scientific inquiry are built. Discovering and documenting the planet’s biodiversity remains one of the grand challenges of science. A proper conceptualization of species provides a critical framework for diverse fields such as biophysics, biochemistry, agriculture and pharmacology, and...
Resource Type:: Dissertation
Full Text:: for preserving valuable DNA of rare or unique specimens. In Chapter 3, the I present the species

Defining Project‐Specific Custom CLT Grade Utilizing Low‐Value Ponderosa Pine Lumber from Logs Harvested in SW Oregon and Northern California Forest Restoration Programs

Creator:: Jahedi, Sina
Abstract:: Restoration programs effectively prevent or mitigate wildfires and pest outbreaks in the forest lands. The most common approach is to selectively harvest smaller and dead trees in order to preserve larger and superior trees. Ponderosa pine, Pinus ponderosa, (PP) lumber is one of the common species harvested from restoration programs...
Resource Type:: Dissertation
Full Text:: Figure X. 6, Delamination specimens placed on the oven for the dry cycle. ........... 104 Figure X. 7

Development of an Accelerated Method for Assessing Decay of Wood Plastic Composites (WPC's)

Creator:: Silva Guzman, Jose Antonio
Abstract:: This study examined the decay resistance of the pine and maple components of wood plastic composites (WPC' s) of varying thicknesses exposed on several culture media to wood decay fungi under laboratory conditions. The ability of malt agar extract (MEA), potato dextrose agar (PDA), amended basal salts, sawdust (maple and...
Resource Type:: Dissertation
Full Text:: Combinations of wood species, specimen thicknesses, exposure periods and test fungi for assessing moisture

Investigation of new compatibilizer systems for wood-polyethylene composites

Creator:: Geng, Yu
Abstract:: Wood-plastic composites (WPCs) are one of the fastest-growing sectors of the wood composites industry. However, the strengths of WPCs are typically low because of the poor interfacial adhesion between hydrophilic wood and hydrophobic thermoplastics. A compatibilizer that can form bridges between wood and plastics is required to give WPCs desirable...
Resource Type:: Dissertation
Full Text:: Compatibilizer Systems for Wood-Polyethylene Composites Abstract approved: Kaichang Li John Simonsen Wood

Copper compounds for durable composites : effects on material properties

Creator:: Vidrine, Cheney L.
Abstract:: The effects of incorporation of selected biocides on physical and mechanical properties of aspen strandboard were assessed using five copper-based preservatives or zinc borate at three retention levels. Tebuconazole or 4,5-dichloro-2-N-octyl-4-isothiazolin-3-one (DCOI) were added as co-biocides to selective copper-based treatments. Mold box tests showed that only panels treated with DCOI...
Resource Type:: Masters Thesis
Full Text:: Cheney L. Vidrine for the degree of Master of Science in Wood Science presented on June 19, 2008. Title

Development and characterization of new formaldehyde-free soy flour-based adhesives for making interior plywood

Creator:: Huang, Jian
Abstract:: Formaldehyde-based adhesives such as urea-formaldehyde (UF) and phenol-formaldehyde (PF) adhesives dominate the current wood adhesive market. However, these adhesives are derived from petrochemicals and carcinogenic formaldehyde. In this study, we developed two formaldehyde-free adhesives based on abundant, renewable, and inexpensive soy flour (SF). The first adhesive was mainly composed of...
Resource Type:: Masters Thesis
Full Text:: OF THE THESIS OF Jian Huang for the degree of Master of Science in Wood Science presented on

Evaluation of new formaldehyde-free, soy flour-based wood adhesives for making particleboard

Creator:: Gu, Kai
Abstract:: Formaldehyde-based adhesives such as urea-formaldehyde (UF), phenol-formaldehyde (PF) are widely applied in wood-based composite industry. However, these adhesives are all petrochemical-based and could not sustain in a long term due to a limited reserve of oil and natural gas. Moreover, these adhesives emit carcinogenic formaldehyde in the production or use...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Kai Gu for the degree of Master of Science in Wood Science

ScholarsArchive@OSU

Hygro-mechanical response of clear softwood specimens to compression under cyclic climate

Rural community college fundraising : a multi-site case study exploring the characteristics and motivations of alumni supporters

Visualization and characterization of biofilm spatial distribution in porous media using x-ray computed microtomography

Delimiting Species in the Mountaintops : New Trails for Studying Genomic Architecture and Sequencing Historical Specimens Uncover Hidden Diversity within the breve Species Group of Bembidion (Coleoptera : Carabidae)

Defining Project‐Specific Custom CLT Grade Utilizing Low‐Value Ponderosa Pine Lumber from Logs Harvested in SW Oregon and Northern California Forest Restoration Programs

Development of an Accelerated Method for Assessing Decay of Wood Plastic Composites (WPC's)

Investigation of new compatibilizer systems for wood-polyethylene composites

Copper compounds for durable composites : effects on material properties

Development and characterization of new formaldehyde-free soy flour-based adhesives for making interior plywood

Evaluation of new formaldehyde-free, soy flour-based wood adhesives for making particleboard

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