Results 121 to 130 of about 159 (150)
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DIRECTIONAL TREE FELLING BY BEAVERS (CASTOR CANADENSIS)
Northwestern Naturalist, 2004Abstract By measuring the falling angle of 888 trees of a variety of sizes cut near 8 different dams in southwestern Saskatchewan, we tested the hypothesis that beavers (Castor canadensis) fell trees in a non-random direction. We predicted that trees would be preferentially felled towards the dam to minimize the costs of transporting materials to the ...
R Mark Brigham, Ray G Poulin
exaly +2 more sources
International Forestry Review, 2016
SUMMARY Reduced-impact logging (RIL) is widely expected to maximize conservation values of selectively logged tropical forests; however, there remains a lack of supporting data to confirm the effectiveness of individual RIL practices. This study evaluates the extent of damage to residual stands and soil caused by directional felling, elephant skidding,
T.C. Khai +4 more
exaly +2 more sources
SUMMARY Reduced-impact logging (RIL) is widely expected to maximize conservation values of selectively logged tropical forests; however, there remains a lack of supporting data to confirm the effectiveness of individual RIL practices. This study evaluates the extent of damage to residual stands and soil caused by directional felling, elephant skidding,
T.C. Khai +4 more
exaly +2 more sources
Physical effects of hinges shape on chainsaw felling direction in Japanese Cypress
International Journal of Forest Engineering, 2019ABSTRACTIn Japan, most felling operations are performed manually with chainsaws, owing to the steep and difficult terrain involved.
Makiko Nagao, Yozo Yamada
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SPEEK/epoxy resin composite membranes in situ polymerization for direct methanol fell cell usages
Journal of Power Sources, 2007Abstract Sulfonated poly(ether ether ketone) (SPEEK)/4,4′-diglycidyl(3,3′,5,5′-tetramethylbiphenyl) epoxy resin (TMBP) composite membranes in situ polymerization were prepared for the purpose of improving the methanol resistance and mechanical properties of SPEEK membranes with high ion-exchange capacities (IEC) for the usage in the direct methanol
Tiezhu Fu +7 more
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Number of global clinical trials done in UK fell by two thirds after EU directive
BMJ, 2009A leading clinician has warned that patients are dying because a European Union directive that was intended to streamline the process of clinical trials has had the opposite effect. Rory Collins, professor of epidemiology and medicine at Oxford University, told a briefing organised by the Science Media Centre on the threat to clinical trials that the “
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Abstract This case concerns a family business in relation to renewable energy, property investment, construction services, civil engineering and mechanical and electrical engineering services. The family business was established by two founders who have subsequently appointed their children to handle the management side of the company.
Puteri Sofia Amirnuddin +2 more
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Puteri Sofia Amirnuddin +2 more
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Occupational tree felling fatalities: 2010–2020
American Journal of Industrial Medicine, 2021Judd Michael, Serap Gorucu
exaly