Treesearch

The present study investigated the effects of exposure of bamboo–plastic composites to three aggressive fungi species on mass loss values. Polyvinyl chloride was used as the synthetic matrix of the composite. Three mixing combinations were used for bamboo– polymer composites, namely 40/60, 50/50, and 60/40. The injection-molded process was employed to produce the composites. Specimens were prepared according to modified European standard specifications (EN-113) to be exposed to white-, brown-, and softrot fungi each month for 4 months. The results indicated that the soft-rot fungus...

Water vapor sorption is a fundamental physical property of wood and has numerous implications for the behavior of wood as a building material. As a result, water vapor sorption isotherms have been studied for over a century and are the topic of countless publications. Despite their importance and depth of study, there has not yet been a thorough review of these studies that can be used to guide readers to the highest quality sorption data. Sorption data acquired at multiple temperatures are frequently used for thermodynamic analysis or to validate sorption models. This review summarizes...

To keep environmental product declarations current, the underlying life-cycle inventory data and subsequent life-cycle assessment (LCA) data for structural wood products must be updated. This publication developed the cradle-to-gate LCA production of southeast laminated veneer lumber aligned to the new ULE 2019 wood product PCR.

To keep environmental product declarations current, the underlying life-cycle inventory data and subsequent life-cycle assessment (LCA) data for structural wood products must be updated. This publication developed the cradle-to-gate LCA production of Pacific Northwest composite I-joists aligned to the new ULE 2019 wood product PCR.

To keep environmental product declarations current, the underlying life-cycle inventory data and subsequent life-cycle assessment (LCA) data for structural wood products must be updated. This publication developed the cradle-to-gate LCA production of southeast composite I-joists aligned to the new ULE 2019 wood product PCR.

To keep environmental product declarations current, the underlying life-cycle inventory data and subsequent life-cycle assessment (LCA) data for structural wood products must be updated. This publication developed the cradle-to-gate LCA production of Pacific Northwest laminated veneer lumber aligned to the new ULE 2019 wood product PCR.

Ctenobium LeConte, 1865 (Coleoptera: Ptinidae) was described for a single species, Ctenobium antennatum LeConte, 1865 (Fig. 1). Ctenobium most closely resembles Oligomerus Redtenbacher, from which it can be readily separated—the pro-coxae in Ctenobium are distinctly separated by a parallel-sided prosternal process, and the antennae are clubbed with antennal segments 3–8 serrate to pectinate (Figs. 1–2) (Philips 2002; White 1971). The conical shape and granulate surface of the last visible abdominal segment are also characteristic for Ctenobium (Fall 1905; LeConte 1865).

This life cycle assessment is part of a larger project to update the life cycle inventories for major wood products produced in the United States (U.S.) on a five-year cycle. Hardwood lumber manufacturing data were collected for the 2017 production year from sawmills operating in the northeast and north central regions (NE/NC) of the U.S.

In March, an overwhelming majority of month-over-month categories were negative. Total, single-, and multifamily starts all recorded double-digit declines. On a year-over-year basis, half the categories indicated improvement, whereas housing completions was the only subsector reporting declines for all components: total, single-family, and multifamily. New single-family and existing house sales decreased, month-over-month and year-over-year. Single-family construction expenditures improved year-over-year and decreased month-over-month. The effects of COVID-19 may not be fully reflected in...

The effects of leaf litter on moisture content and fungal decay development in above-ground wood specimens were assessed. Untreated southern pine specimens were exposed with or without leaf litter contact. Two types of leaf litter were evaluated; aged (decomposed) and young (early stages of decomposition). The moisture content of specimens was monitored, and specimens were periodically removed for visual evaluation of decay development. In addition, amplicon-based sequencing analysis of specimens and associated leaf litter was conducted at two time points. Contact with either type of leaf...