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X-WR-CALDESC:Events for College of Forestry, Wildlife and Environment
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DTSTART;TZID=America/New_York:20190123T110000
DTEND;TZID=America/New_York:20190123T120000
DTSTAMP:20260516T062619
CREATED:20190123T161742Z
LAST-MODIFIED:20190123T161742Z
UID:5889-1548241200-1548244800@cfwe.auburn.edu
SUMMARY:SFWS Seminar Series - Armando McDonald
DESCRIPTION:Armando G. McDonald\, Professor of Renewable Materials\, Department of Forest\, Rangeland and Fire Science\, University of Idaho\n“The effect of biochar as reinforcing filler on the properties of wood plastic composites.” \nSeminar is held at 11 a.m. in Conference Room 1101 in the SFWS Building\, 602 Duncan Drive\, Auburn\, AL. \n\nFaculty\, students and the public are invited to attend this free program.\nComplimentary cookies and coffee will be served.\nCFEs are available by request.\nAdvanced registration is not required.\nParking is available on the 3rd and 4th floors of the South Quad parking deck on Duncan Drive\, directly across from the SFWS Building. See Parking Services on Level 2 to obtain a visitor pass.\n\nAbstract:  The focus of this study was to observe the effect of biochar as reinforcing filler substitute for high density polyethylene (HDPE) based wood plastic composites. Four fibers types: Douglas-fir (DF)\, Western Renewable Technologies (WRT) biochar\, Amaron (AM) biochar\, and Norit activated (NA) carbon were evaluated. The composites were evaluated for their mechanical properties\, water absorptions\, thermal and viscoelastic properties\, rheological behavior\, and weatherability. The NA composite melts showed the higher modulus and viscosity\, indicating better melt strength. In addition\, the NA composites performed the best in tensile strength (28.6 MPa) and tensile modulus (3.4 GPa). The NA composites showed lower tan δ and adhesion factor\, indicating the strong interfacial interaction between carbon particles and the matrix. The softening temperature (Ts) of the composites were improved upon addition of fillers. The degree of HDPE crystallinity in the biochar and carbon composites decreased relative to the DF composites\, while the thermal properties of the composites improved compared with DF composites. For the water resistance\, the DF composites displayed the highest water absorption (3.7%) and thickness swell (2.9%). During accelerated weathering tests\, longer exposure time increased the degree of color change and lightness\, especially for the DF composite. NA and biochar composites resulted in improved photostability. \nBiography:  Armando McDonald is a Professor of Renewable Materials in the Department of Forest\, Rangeland and Fire Science\, University of Idaho (UI) with over 33 years’ experience in bioproducts and biomaterials research and development and has presented and published numerous articles. Armando came to UI in 2001 from New Zealand Forest Research\, where he was a Group Leader of the Materials Discovery group. His time at UI is devoted to mainly research and teaching with some extension/service activities. He teaches classes in Biocomposites\, Biomass chemistry\, and Bioproducts and Bioprocess Development. Dr. McDonald has graduated eight Ph.D. students and 15 M.S. students and hosted 15 International visiting scholars in his Renewable Materials Laboratory. Dr. McDonalds’ group is currently investigating: (i) bioplastics from lignin and other waste streams\, (ii) biofuels from pyrolysis of biomass\, (iii) development of nanostructured Fischer-Tropsch catalysts for production of fuels\, (iv) biocomposites\, (v) algae conversion to fuels\, (vi) biomass conversion into chemicals\, (vii) torrefaction of biomass and waste\, and (viii) natural products chemistry. Furthermore\, Dr. McDonald also works with industry from service work to product development projects.
URL:https://cfwe.auburn.edu/event/sfws-seminar-series-armando-mcdonald/
LOCATION:College of Forestry\, Wildlife and Environment\, 602 Duncan Drive\, Auburn\, AL\, 36849\, United States
CATEGORIES:Events,Main Calendar
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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190130T110000
DTEND;TZID=America/New_York:20190130T120000
DTSTAMP:20260516T062619
CREATED:20190123T162523Z
LAST-MODIFIED:20190123T162523Z
UID:5893-1548846000-1548849600@cfwe.auburn.edu
SUMMARY:SFWS Seminar Series - Caterina Villari
DESCRIPTION:Caterina Villari\, Assistant Professor\, Warnell School of Forestry and Natural Resources\, University of Georgia\, and Co-Director\, Southern Pine Health Research Cooperative\n“Rapid identification of disease resistant trees via advanced spectroscopy-based phenotyping” \nSeminar is held at 11 a.m. in Conference Room 1101 in the SFWS Building\, 602 Duncan Drive\, Auburn\, AL. \n\nFaculty\, students and the public are invited to attend this free program.\nComplimentary cookies and coffee will be served.\nCFEs are available by request.\nAdvanced registration is not required.\nParking is available on the 3rd and 4th floors of the South Quad parking deck on Duncan Drive\, directly across from the SFWS Building. See Parking Services on Level 2 to obtain a visitor pass.\n\nAbstract:  With the rapid growth of international trade\, we are facing an increase in the introduction of invasive pests into North American forests. The use of genetic resistance could provide a solution to protect our native forests\, especially when other management options have proven neither feasible nor successful\, which is the case for many past examples. However\, unless we implement marker assisted selection\, conventional breeding of forest trees takes decades\, even in those instances in which advance breeding and propagation can be used. In this seminar\, I will describe the use of chemical spectroscopy-based fingerprinting techniques\, such as Raman or Fourier-transform infrared (FT-IR) spectroscopy\, for the rapid selection of resistant trees. In particular\, I will bring the example of a collaborative study which involved several European and North American institutions. The aim of the project was to test the feasibility and efficacy of FT-IR spectroscopy to rapidly phenotype European ash (Fraxinus excelsior) genotypes resistant or susceptible to ash dieback\, a lethal disease caused by the invasive ascomycete Hymenoscyphus fraxineus. Analysed samples comprised both leaves and twigs collected in six European countries from trees that had been previously characterized in terms of resistance. Leaf and twig phenolic extracts were analysed with FT-IR\, and resulting spectra were incorporated in a soft independent modelling of class analogy (SIMCA) model to predict the phenotype of the trees. While models built with leaves showed little power\, probably due to the high chemical variability of leaf tissues\, the ones built with twigs were very powerful\, indicating that FT-IR can clearly discriminate between ash phenotypes displaying contrasting resistance levels to ash dieback. The SIMCA model was then validated using a separate set of completely blind samples\, and showed a very high overall prediction accuracy. The implementation of spectroscopy-based techniques for resistance phenotyping has the potential to revolutionize the selection and breeding of resistant trees\, not only in the European ash-ash dieback system\, but potentially in many other pathosystems as well. \nBiography:  Caterina Villari is an Assistant Professor in Forest Pathology at the Warnell School of Forestry and Natural Resources\, University of Georgia\, and Co-Director of the Southern Pine Health Research Cooperative. She has a B.S. in Forest and Environmental Sciences and a M.S. in Plant Health Sciences and Technologies\, both from the University of Florence (Italy). She received her Ph.D. in Crop Science\, Plant Protection Curriculum from the University of Padua (Italy)\, and did her postdoctoral work at the Ohio State University\, Department of Plant Pathology. Her main scientific interests are the interactions among trees\, fungal pathogens and insect herbivores\, and related chemical ecology aspects. She works with symbioses between bark beetles and fungi\, plant defense mechanisms\, microbial communities and early detection strategies\, using an interdisciplinary approach that involves ecological\, metabolomic\, and molecular analyses.
URL:https://cfwe.auburn.edu/event/sfws-seminar-series-caterina-villari/
LOCATION:College of Forestry\, Wildlife and Environment\, 602 Duncan Drive\, Auburn\, AL\, 36849\, United States
CATEGORIES:Events,Main Calendar
ORGANIZER;CN="Dr. Lori Eckhardt":MAILTO:eckhalg@auburn.edu
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