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Displaying 19,571 - 19,580 of 65,202 Publications- Four research-based insights are essential to understanding forest bioenergy and “carbon debts.” (1) As long as wood-producing land remains in forest, long-lived wood products and forest bioenergy reduce fossil fuel use and long-term carbon emission impacts. (2) Increased demand for wood can trigger investments that increase forest area and forest productivity and reduce carbon impacts associated with increased harvesting. (3) The carbon debt concept emphasizes short-term concerns about biogenic CO2 emissions, although it is long-term cumulative CO2 emissions that are correlated with...AuthorsReid A. Miner, Robert C. Abt, Jim L. Bowyer, Marilyn Buford, Robert W. Malmsheimer, Jay O'Laughlin, Elaine E. Oneil, Roger A. Sedjo, Kenneth E. SkogKeywordsSourceJournal of Forestry 112(6):591-606Year2014
- Two wood plastic composite (WPC) boards, one experimental and one commercial, were exposed to exterior conditions and evaluated non-destructively using a clinical magnetic resonance imaging (MRI) unit for moisture content (MC) and distribution. The experimental board was exposed in Vancouver, British Columbia, for more than 8 years, and the commercial board was exposed near Hilo, Hawaii, for 2 years. Both boards were characterized in terms of wood content, density, water uptake properties and voids content. The experimental board was additionally destructively analysed for water absorption...AuthorsMarek Gnatowski, Rebecca E. Ibach, Mathew Leung, Grace SunKeywordsSourceWood Material Science and Engineering, 2014; 18p.Year2014
- Manufacturing panels from Tetra Pak® (TP) packaging material might be an alternative to conventional wood-based panels. This study evaluated some chemical and physical properties as well as biological, weathering, and fire performance of panels with and without zinc borate (ZnB) by using shredded TP packaging cartons. Such packaging material, a worldwide well-known multilayer beverage packaging system, is composed of cellulose, low-density polyethylene (LDPE), and aluminum (AI). Panels produced from waste TP packaging material were also examined by FT-IR to understand the fungal deteriorati...AuthorsNural Yilgor, Coskun Kose, Evren Terzi, Aysel Kanturk Figen, Rebecca E. Ibach, S. Nami Kartal, Sabriye PiskinKeywordsSourceBioResources, Volume 9, Number 3, 2014; pp. 4784-4807.Year2014
- Structural insulated panels (SIPs) have been recognized as construction materials in the International Residential Code (IRC) since 2009. Although most SIPs are used in wall applications, they can also be used as roof or floor panels that are subjected to long-term transverse loading, for which SIP creep performance may be critical in design. However, limited information on creep performance of SIPs under transverse loading is available. Collaborative pilot studies were undertaken by the USDA Forest Products Laboratory and APA–The Engineered Wood Association to explore the creep behavior...AuthorsDwight E. Mcdonald, Marshall Begel, Christopher Adam Senalik, Robert J. Ross, Thomas D. Skaggs, Borjen Yeh, Thomas WilliamsonKeywordsSourceFPL-RN-332Year2014
- Stress-wave nondestructive evaluation (NDE) techniques are used widely in the forest products industry—from the grading of wood veneer to inspection of timber structures. Inspection professionals frequently use stress-wave NDE techniques to locate internal voids and decayed or deteriorated areas in large timbers. Although these techniques have proven useful, little information exists concerning the relationship between stress-wave parameters and deterioration observed as a consequence of marine borer attack. In this pilot test, we examined the relationship between stress-wave transmission...AuthorsRobert J. Ross, John W. Forsman, John R. Erickson, Allen M. BrackleySourceUSDA Forest Service, Forest Products Laboratory, Research Note, FPL-RN-0333, 2014; 8 p.Year2014
- Collectively classified as white-rot fungi, certain basidiomycetes efficiently degrade the major structural polymers of wood cell walls. A small subset of these Agaricomycetes, exemplified by Phlebiopsis gigantea, is capable of colonizing freshly exposed conifer sapwood despite its high content of extractives, which retards the establishment of other fungal species. The mechanism(s) by which P. gigantea tolerates and metabolizes resinous compounds have not been explored. Here, we report the annotated P. gigantea genome and compare profiles of its transcriptome and secretome when cultured...AuthorsChiaki Hori, Takuya Ishida, Kiyohiko Igarashi, Masahiro Samejima, Hitoshi Suzuki, Emma Master, Patricia Ferreira, Francisco J. Ruiz-Duenas, Benjamin Held, Paulo Canessa, Luis F. Larrondo, Monika Schmoll, Irina S. Druzhinina, Christian P. Kubicek, Jill Gaskell, Philip J. Kersten, Franz St. John, Jeremy Glasner, Grzegorz Sabat, Sandra Splinter Bondurant, Khajamohiddin Syed, Jagjit Yadav, Anthony C. Mgbeahuruike, Andriy Kovalchuk, Fred O. Asiegbu, Gerald Lackner, Dirk Hoffmeister, Jorge Recoret, Ana Gutierrez, Hui Sun, Erika Lindquist, Kerrie Barry, Robert Riley, Igor V. Grigoriev, Bernard Henrissat, Ursula Kues, Randy M. Berka, Angel T. Martinez, Sarah F. Covert, Robert A. Blanchette, Daniel CullenKeywordsSourcePLOS Genet Volume 10, Number 12, December 2014; 20 p.Year2014
- Mechanical analysis is presented for new high-strengthsandwich panels made from wood-based phenolic impregnated laminated paper assembled with an interlocking tri-axial ribbed core. Four different panel configurations were tested, including panels with fiberglass fabric bonded to both outside faces with self-expanding urethane foam used to fill the ribbed core. The mechanical behaviors of the sandwich panels were strength tested via flatwise compression, edgewise compression, and third-point load bending. Panels with fiberglass exhibited significantly increased strength and apparent MOE in...AuthorsJinghao Li, John F. Hunt, Shaoqin Gong, Zhiyong CaiSourceBioResources, Volume 9, Number 2, 2014; pp. 1898-1913.Year2014
- A new method to prepare nanolignin using a simple high shear homogenizer is presented. The kraft lignin particles with a broad distribution ranging from large micron- to nano-sized particles were completely homogenized to nanolignin particles with sizes less than 100 nm after 4 h of mechanical shearing. The 13C nuclear magnetic resonance (NMR) and 31P NMR analysis showed that there were no major changes in the chemical composition between the starting kraft lignin particles and the nanolignin obtained after 4 h of mechanical treatment. The nanolignin particles did not show any change in...AuthorsSandeep S. Nair, Sudhir Sharma, Yunqiao Pu, Qining Sun, Shaobo Pan, Junyong Zhu, Yulin Deng, Art J. RagauskasKeywordsSourceChemSusChem, Volume 7, 2014; pp. 3513-3520.Year2014
- This publication provides an overview of forest resource attributes in New Jersey based on an annual inventory conducted by the Forest Inventory and Analysis (FIA) Program of the U.S. Forest Service, Northern Research Station (NRS). These estimates, along with web-posted core tables, will be updated annually. For more information, please refer to inventory citations on page 4 of this report.AuthorsSusan CrockerSourceResource Update FS-28. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 4 p.Year2014
- This publication provides an overview of forest resources in New Hampshire based on inventories conducted by the U.S. Forest Service, Forest Inventory and Analysis (FIA) program of the Northern Research Station. Since 1999, FIA has employed an annual inventory measuring data on a nominal 20 percent of sample plots each year. For the 2013 inventory, estimates for current variables such as area, volume, and biomass are based on 1057 plot samples collected from 2009-2013. Change variables, such as net growth, removals, and mortality, are based on 897 samples collected in 2004-2008 and...AuthorsRandall Morin, Scott A. PughSourceResource Update FS-29. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 4 p.Year2014