The article “Effects of Wheat Protein as a Biological Binder in the Manufacture of Particleboards Using a Mixture of Canola, Hemp, Bagasse, and Commercial Wood” by Neda Nikvash, Alireza Kharazipour, and Markus Euring, Forest Products Journal 62(1):49-57, contained instances of missing or incorrect information.

The first full sentence in the second column on p. 50 should read “Also, formaldehyde (methanal [HCHO]) values of the particleboards were determined by the perforator method but not published.”

The fifth sentence under “Board manufacture” on p. 50 was missing information and should instead read “Resins including pure UF for the middle layers,

ABSTRACT

The financial crisis that started in mid-2008 has led to a subsequent economic recession. Although officially declared over, global financial degradation may result in a “double-dip” recession with no substantive relief in the near future. Consequently, fundamental shifts within global forestry and the forest industry sectors have taken place with disruptions, dislocations, and uncertainties felt through the entire chain from the forest to markets. This is the worst downturn for forest products markets since the first oil crisis in the 1970s. Manifestations have included decreased demand, fluctuating prices and changed exchange rates, increased competition, overcapacity, low profitability, wood supply problems, and competition for raw materials exacerbated by the emerging bio-based energy sector. Although the ability of the forest sector as a whole to experience strong growth during the recession and when recovery begins is doubtful, there are many actions that individual companies can take to create competitive opportunities during the crisis and solidify position when markets strengthen. This article presents specific actions that can be taken to create or maintain competitive advantage across the forest sector supply chain in this time of crisis.

Abstract

This article presents changes in proportions of wood fiber residue or by-products generated in lumber production in the western United States over the last 40 years. The results show the proportion of logs remaining as residue has dropped from 59 percent in the 1970s to 51 percent in the 2000s. Technology and its improved application have led to decreased proportions of wood fiber residue in lumber production even as log size has decreased. West wide the proportion of the log converted to both sawdust and planer shavings has decreased substantially over the last 40 years with no change in the proportion recovered in coarse residue. Coarse residue was 31 percent of log volume processed in the 1970s and 2000s. Sawdust generated was 15 percent of log volume in the 1970s and 11 percent in the 2000s, with planer shavings moving from 13 to 9 percent.

Abstract

Cracks in softwood are an important defect that reduces the quality of sawn timber for construction purposes. As with all other quality reducing features in wood, it is of significant interest to know about their number and position in a log before sawing. On one hand, cracks are relatively easy to distinguish from wood by means of computer tomographic (CT) scanning owing to the large differences in density. The fact that they tend to be irregular and very thin, however, complicates detection. This study describes a method for automated crack detection in single CT slices and evaluates its precision in terms of both detection rate and length measurement. Twenty tree discs were sampled from spruce (Picea abies) and silver fir (Abies alba) logs and scanned with a computer tomograph. The results of the automated detection are compared with data from manual reference measurements on the physical discs and with data from visual inspection of the CT images. Under optimal conditions, the detection rate is 84 percent. The average underestimation of crack length is 18 mm for heart checks and 15 mm for radial checks. There is no sharp threshold of crack width that limits the detection. The overall precision of this crack detection method can be seen as sufficient for practical purposes, when the standard errors in length measurement are considered.

Effect of Decoration Complexity and Age on Aesthetic Evaluation, Purchase Intention, and Visual Attention in Wood Furniture

Tao Song,

Hemin Du,

Sifan Wu,

Wang Pohsun,

Jingran Lin,

Ziying Li, and

Liying Wen

Errata

Gaining Competitive Advantage in the New Normal

ABSTRACT

Trends in Lumber Processing in the Western United States. Part III: Residue Recovered versus Lumber Produced

Abstract

Crack Detection in Computer Tomographic Scans of Softwood Tree Discs

Abstract

Modeling Air Drying of Sitka Spruce (Picea sitchensis) Biomass in Off-Forest Storage Yards in Ireland

Abstract

Effects of Compressive Deformation on Wettability and Water Uptake Behavior of Poplar

Abstract

Estimation and Analysis of Sanding Length in Brush Sanding Specially Shaped Wood Products

Abstract

Thermal Conversion of Pine Wood Char to Carbon Nanomaterials in the Presence of Iron Nanoparticles

Abstract

Efficacy of Pentachlorophenol in Biodiesel versus Diesel

Abstract

Demonstration Results from Greenhouse Heating with Bio-Oil

Abstract

Substantial Bark Use as Insulation Material

Abstract

Effect of Decoration Complexity and Age on Aesthetic Evaluation, Purchase Intention, and Visual Attention in Wood Furniture

Lumber Kiln Technology and Training Needs in the Northeastern United States

Impact of Market Price Fluctuations on the Break-Even Log in Hardwood Sawmills

High-Performance Formaldehyde-Free Lignin Adhesives from Sugarcane Bagasse via Epoxy Cross-Linking

Effect of a Water Repellent on Moisture Intrusion Patterns in Small-Scale Mass Ply Panel Floors

Study on Urea-Formaldehyde Prepolymer and Hot-Press Treatment of Italian Poplar Wood

Vermont Stumpage Price Trends Revisited: With Comparisons to New Hampshire

Demonstration Results from Greenhouse Heating with Bio-Oil

Potential of Tannins for Exterior Grade Plywood

Potential Use of Deformed Shank Nails as a Solution to Annoying Vibrations in Wood Floor Systems