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Displaying 1 - 10 of 63,257 Publications- Improving flame retardancy and mechanical strength of lignin-containing polyurethane is a great challenge. In this study, lignin with favorable reactivity and dispersity was extracted from poplar using acid hydrotrope p-TsOH in EtOH. The extracted acid hydrotrope lignin (AHL) was subsequently functionalized with nitrogen and phosphorus (FHL) and reacted with isocyanate to fabricate a fire-retardant polyurethane (FHL-PU). The resulting FHL-PU exhibited a five-fold increase in fracture toughness and remarkable reprocessability, attributable to the dual cross-linked network formed by dynamic hydr...AuthorsFeng Gu, Wenjing Yang, Guoqing Xiao, Haoran Wang, Quan Yang, Zhaosheng Cai, Wangxia Wang, J.Y. ZhuKeywordsSourceJournal: International Journal of Biological MacromoleculesYear2025
- Cellulose is the most abundant naturally occurring polysaccharide. Its inherent mechanical stability, biocompatibility, biodegradability, and abundant hydroxyl groups available for derivatization provide benefits in the production of fiber-based materials such as conductive fibers. Cellulose derivatives, including cellulose esters such as cellulose acetate (CA), are readily generated in the fiber form following dissolution using a variety of solvents. Electrospinning is one of the emerging technologies with an outstanding ability to regenerate fibers in the nanoscale range. Polyaniline (PANI)...AuthorsJeanette O. Grande-Flores, Biljana M. Bujanovic, Gary M. ScottSourceTAPPI JournalYear2025
- The production of cellulosic sugars is a pivotal strategy for advancing biomass bioconversion. This study evaluated the pretreatment of corn stover using ammonium sulfite and potassium hydroxide to develop comprehensive data on sugar, lignin, chemicals, and overall mass recovery profiles in a batch reactor at 80 °C. The results indicated significant improvements in delignification, deacetylation, enzymatic digestibility, and overall sugar yield. Specifically, pretreating corn stover with a solution of 40 wt% potassium hydroxide and 15 wt% ammonium sulfite at 80 °C for 2 h achieved 78.9 % ligni...AuthorsShuaishuai Ma, Shiva, Haiying Tao, Jacob Dempsey, Xiaowen Chen, Jinxia Yuan, J.Y. Zhu, Joshua S. Yuan, Le Zhou, Bin YangKeywordsSourceJournal: Bioresource TechnologyYear2025
- Spruce beetle, Dendroctonus rufipennis (Kirby) (Coleoptera: Curculionidae), poses a significant threat to mature spruce (Picea spp.) in western North America. We evaluated 3-methylcyclohex-2-en-1-one (MCH), the primary anti-aggregation pheromone of D. rufipennis, for tree protection at 3.5 and 7 g MCH/tree (SPLAT MCH, ISCA Inc., Riverside, CA) alone and in combination with acetophenone + (E)-2-hexen-1-ol + (Z)-2-hexen-1ol (PLUS) or with linalool + β-caryophyllene + (Z)-3-hexanol (AKB). Dendroctonus rufipennis colonization and subsequent mortality of individually treated spruce and of untreated...AuthorsJackson Audley, Christopher Fettig, Jason Moan, Jessie Moan, Steve Swenson, Leif Mortenson, Agenor Mafra-NetoKeywordsSourceJournal of Economic Entomology. 115: 187.Year2025
- Climate, forest successional stage, and soil substrate age can alter herbivore communities and their effects on biogeochemical cycling, but the size and spatial variability of these effects are poorly quantified. To address this knowledge gap, we established a globally distributed network of 50 broadleaved old-growth forests across six continents, encompassing well-constrained local-scale gradients in mean annual temperature (MAT), mean annual precipitation (MAP), succession, and soil substrate age. We used this network to investigate how these variables impact insect foliar herbivory and the ...AuthorsBernice C. Hwang, Christian P. Giardina, M. Noelia Barrios-Garcia, Haoyu Diao, Virginia Gisela Duboscq-Carra, Andreas Hemp, Claudia Hemp, Mylthon Jiménez-Castillo, Paulina Lobos-Catalán, Levan Mumladze, Ana C. Palma, Ion Catalin Petritan, Mariano A. Rodriguez-Cabal, Tommi Andersson, Kainana S. Francisco, Shelley A. Gage, Giorgi Iankoshvili, Seana K. Walsh, Daniel B. MetcalfeSourceGlobal Biogeochemical Cycles. 39: e2024GB008367.Year2025
- The Central Appalachian region contains several high-elevation endemic woodland salamanders, which are thought to be particularly vulnerable to climate change due to their restricted distributions and low vagility. In West Virginia, there is a strong management focus on protection and recovery of the federally threatened Cheat Mountain salamander Plethodon nettingi. To support this focus, there is a need for improved understanding of the occurrence–habitat relationships and spatially explicit projections of fine-scale contemporary and potential future habitat quality to inform management actio...AuthorsLacy Rucker, Donald J. Brown, Michael Strager, Thomas K. PauleySourceEndangered Species ResearchYear2025
- Catchment studies are foundational to hydrological and biogeochemical process understanding that has informed resource management, policy development and societal well-being (Burt and McDonnell 2015; Likens 2021; Tetzlaff et al. 2017). These place-based studies with sustained monitoring have shaped understanding of fundamental ecosystem processes and consequences of environmental change on ecosystems (Campbell et al. 2022; Hewlett, Lull, and Reinhart 1969; Jones et al. 2012; Latron and Lana-Renault 2018; Lovett et al. 2007; McNamara et al. 2018). The special issue, Research and Observatory Ca...AuthorsStephen Sebestyen, James B. Shanley, Theresa Blume, Jonathan M. Duncan, Julia Jones, Catalina Segura, M. Alisa. MastSourceHydrological ProcessesYear2025
- A long-term study of forest management, like the one established in the 1950s by the U.S. Department of Agriculture, Forest Service at the Penobscot Experimental Forest in Maine, provides a unique opportunity for landowners to learn about different approaches to management and their outcomes. After more than 70 years of research at the Penobscot Experimental Forest, it has become apparent that the management approaches applied have changed the species composition, tree quality, wildlife habitat, carbon storage, productivity, and financial value of the forest. The side-by-side comparisons inclu...AuthorsMaren Granstrom, Laura S. Kenefic, Mindy S. Crandall, Sally Stockwell, R. Alec Giffen, Nicole S. RogersKeywordsSourceGen. Tech. Rep. NRS-228. Madison, WI: U.S. Department of Agriculture, Forest Service, Northern Research Station. 47 p.Year2025
- The July 2016 flood in northwest Wisconsin caused the failure of over 40 road-stream crossings and damaged 300 miles of roads on the Chequamegon-Nicolet National Forest. Peak flood flow estimates were obtained at 26 road-stream crossing sites including 17 sites designed using stream simulation (SS). Peak flood magnitudes ranged from 9 to 2,629 cubic feet/second/square mile (cfsm). Floods at 21 sites were over 100 cfsm which were 1.4 to 14.4 times greater than the estimated 1 percent annual exceedance probability flood. Only 1 of 17 SS sites failed, although 13 overtopped. Infrastructure surviv...AuthorsDale Higgins, Deahn M. DonnerKeywordsSourceGen. Tech. Rep. NRS-231. Madison, WI: U.S. Department of Agriculture, Forest Service, Northern Research Station. 69 p.Year2025
- Spruce beetle (Dendroctonus rufipennis (Kirby)) is a major cause of spruce (Picea spp.) mortality in western North America. We synthesized the literature on the chemical ecology of spruce beetle, focusing on efforts to reduce host tree losses. This literature dates back to the mid-20th century and focuses on spruce beetle populations in Alaska, U.S., western Canada, and the central and southern Rocky Mountains, U.S. Spruce beetle aggregation pheromone components include frontalin (1,5-dimethyl-6,8-dioxabicyclo[3.2.1]octane), seudenol (3-methyl-2-cyclohexen-1-ol), MCOL (1-methyl-2-cyclohexen-1-...AuthorsChristopher J. Fettig, Jackson P. Audley, Allen Steven. MunsonKeywordsSourceForests. 16(7): 1103.Year2025