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A composite generator film impregnated with cellulose nanocrystals for enhanced triboelectric performance

A novel polydimethylsiloxane (PDMS)/cellulose nanocrystal flake (CNCF) composite triboelectric nanogenerator (CTG) using CNCFs as effective dielectrics a 10-times-enhanced triboelectric performance compared with its pure PDMS counterpart. Positive charges generated on the surface of the CNCFs during cyclic compression boosted electron transfer and induced extra charges...

https://www.fs.usda.gov/treesearch/search?keywords=%22Generations%22&%3Bf%5B0%5D=year%3A%222019%22&f%5B0%5D=author_facet%3A%22Hammel%2C%20Kenneth%22&f%5B1%5D=author_facet%3A%22Baez%2C%20Carlos%22&f%5B2%5D=author_facet%3A%22Sutherland%2C%20Diane%22&f%5B3%5D=author_facet%3A%22Tarbill%2C%20Gina%22&f%5B4%5D=author_facet%3A%22Lebow%2C%20Patricia%22&f%5B5%5D=author_facet%3A%22Haley%2C%20Elizabeth%22&f%5B6%5D=author_facet%3A%22Clemons%2C%20Craig%22

Author(s):

Jun Peng; Huilong Zhang; Qifeng Zheng; Craig M. Clemons; Ronald C. Sabo; Shaoqin Gong; Zhenqiang Ma; Lih-Sheng Turng

Year:

2017

Keywords:

Triboelectric nanogenerator, cellulose nanocrystals, composite, electron exchange mechanism

Source:

Nanoscale. 9(4): 1428-1433.

Natural durability of tropical and native woods against termite damage by Reticulitermes flavipes (Kollar)

Environmental pressure has resulted in voluntary removal of chromated copper arsenate (CCA) from wood preservatives in residential applications in the United States. A new generation of copper organic preservatives was formulated as replacements, but these preservatives may not provide a permanent solution to all related problems. Some of these issues include concern...

Author(s):

Rachel A. Arango; Frederick Green; Kristina Hintz; Patricia K. Lebow; Regis B. Miller

Year:

2006

Keywords:

NHA, borate, termite damage, specific gravity

Source:

International biodeterioration & biodegradation. Vol. 57 (2006): pages 146-150

Efficacy of fatty acid chemistry : candidate mold and decay fungicides

Although organic, lipophilic acids, such as acetic, propionic, sorbic and benzoic, have a long history as preservatives in the food industry, relatively high concentrations are required and their bioactivities generally pertain to retarding microbial growth rather than eliminating pathogens. Moreover, exclusive use of organic acids such as lactic or citric acid, alone...

Author(s):

Robert Coleman; Vina Yang; Bessie Woodward; Patti Lebow; Carol Clausen

Year:

2010

Keywords:

Biodegradation, mold prevention, wood deterioration, wood-decaying fungi, wood preservatives, preserved wood, fungicides, antifungal agents, fatty acids, mold control, organic acids, southern pines, Aspergillus niger, Penicillium chrysogenum, Trichoderma viride, Alternaria alternata, leaching, stain fungi, Aureobasidium pullulans, Gloeophyllum trabeum, Postia placenta, Trametes versicolor, sweetgum, biocides, decay fungi, wood decay, decay resistance, preservative treated wood, treated wood, preservatives, southern yellow pine, fungicidal properties, wood decomposition

Source:

Proceedings, one hundred sixth annual meeting of the American Wood Protection Association ... Savannah, Georgia, May 23-25, 2010: volume 106. Birmingham, Ala. : American Wood Protection Association, c2010: p. 287-297.

The Statistics of wood assays for preservative retention

This paper covers general statistical concepts that apply to interpreting wood assay retention values. In particular, since wood assays are typically obtained from a single composited sample, the statistical aspects, including advantages and disadvantages, of simple compositing are covered.

Author(s):

Patricia K. Lebow; Scott W. Conklin

Year:

2011

Keywords:

Wood assay, retention value, composite, central limit theorem, preservative treated wood, wood preservatives, preserved wood, numerical analysis, mathematical statistics, leaching, wood sampling, standard deviations, treated wood, statistical analysis, penetration, Southern yellow pine, compositing

Source:

Proceedings, one hundred seventh annual meeting of the American Wood Protection Association ... Fort Lauderdale, Florida, May 15-17, 2011: Volume 107. Birmingham, Ala. : American Wood Protection Association, c2011: p. 190-195.

Waste-wood-derived fillers for plastics

Filled thermoplastic composites are stiffer, stronger, and more dimensionally stable than their unfilled counterparts. Such thermoplastics are usually provided to the end-user as a precompounded, pelletized feedstock. Typical reinforcing fillers are inorganic materials like talc or fiberglass, but materials derived from waste wood, such as wood flour and recycled paper...

Author(s):

Brent English; Craig M. Clemons; Nicole Stark; James P. Schneider

Year:

1996

Keywords:

Wood fiber, plastic processing, properties of composites, recycling

Source:

Gen. Tech. Rep. FPL–GTR–91. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 15 p.

Laccase and its role in production of extracellular reactive oxygen species during wood decay by the brown rot basidiomycete Postia placenta

Brown rot basidiomycetes initiate wood decay by producing extracellular reactive oxygen species that depolymerize the structural polysaccharides of lignocellulose. Secreted fungal hydroquinones are considered one contributor because they have been shown to reduce Fe³⁺, thus generating perhydroxyl radicals and Fe²⁺, which...

Author(s):

Dongsheng Wei; Carl J. Houtman; Alexander N. Kapich; Christopher G. Hunt; Daniel Cullen; Kenneth E. Hammel

Year:

2010

Keywords:

Wood-decaying fungi, brown rot, fungi, biotechnology, lignocellulose, industrial applications, genetics, molecular genetics, biodegradation, Basidiomycetes, hydroquinone, cellulose, laccase, lignin, oxygen, chemical reactions, polysaccharides, aspen, gene expression, oxalates, mass spectrometry, genomes, enzymes, hydrogen peroxide, decay fungi, wood decay, Postia placenta

Source:

Applied and environmental microbiology. Vol. 76, no. 7 (Apr. 2010): pages 2091-2097.

Fungal lignin peroxidase does not produce the veratryl alcohol cation radical as a diffusible ligninolytic oxidant

Peroxidases are considered essential agents of lignin degradation by white-rot basidiomycetes. However, low-molecularweight oxidants likely have a primary role in lignin breakdown because many of these fungi delignify wood before its porosity has sufficiently increased for enzymes to infiltrate. It has been proposed that lignin peroxidases (LPs, EC 1.11.1.14) fulfill...

Author(s):

Carl J. Houtman; Eranda Maligaspe; Christopher G. Hunt; Elena Fernández-Fueyo; Angel T. Martínez; Kenneth E. Hammel

Year:

2018

Keywords:

White rot fungus, lignin biodegradation, peroxidase, aryl cation radical

Source:

Journal of Biological Chemistry. 293(13): 4702-4712.

Localizing gene regulation reveals a staggered wood decay mechanism for the brown rot fungus Postia placenta

Wood-degrading brown rot fungi are essential recyclers of plant biomass in forest ecosystems. Their efficient cellulolytic systems, which have potential biotechnological applications, apparently depend on a combination of two mechanisms: lignocellulose oxidation (LOX) by reactive oxygen species (ROS) and polysaccharide hydrolysis by a limited set of glycoside...

Author(s):

Jiwei Zhang; Gerald N. Presley; Kenneth E. Hammel; Jae-San Ryu; Jon R. Menke; Melania Figueroa; Dehong Hu; Galya Orr; Jonathan S. Schilling

Year:

2016

Keywords:

Biodegradation, bioconversion, decomposition, lignocellulose, cellulase

Source:

Proceedings of the National Academy of Sciences. 113(39): 10968-10973.

Heat release rate of wood-plastic composites

Wood-plastic composites are becoming more important as a material that fulfills recycling needs. In this study, fire performance tests were conducted on several compositions of wood and plastic materials using the Ohio State University rate of heat release apparatus. Test results included five-minute average heat release rate in kW/m2 (HRR avg) and maximum heat release...

Author(s):

N. M. Stark; R. H. White; C. M. Clemons

Year:

1997

Keywords:

Wood plastic composites, Combustion, Heat

Source:

SAMPE journal. Vol. 33, no. 5 (Sept./Oct. 1997).:p. [26]-[31].

The need for performance criteria in evaluating the durability of wood products

Data generated from wood-product durability evaluations can be difficult to interpret. Standard methods used to evaluate the potential long-term durability of wood products often provide little guidance on interpretation of test results. Decisions on acceptable performance for standardization and code compliance are based on the judgment of reviewers or committees....

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