Saskatchewan Pulpwood uses rubber-tired skidder for scarification
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Harvesting trials were performed during the winter and spring of 2003–2004 in central Oregon to compare the costs, production rates, and soil compaction impacts of two systems for harvesting western juniper (Juniperus occidentalis). The two systems compared were a conventional system consisting of manual felling, delimbing, and bucking using a chainsaw and skidding logs with a rubber-tired grap...
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Harvest traffic with heavy equipment causes damage to forest soils. Whereas increased soil damage has been reported with increasing harvest equipment traffic and on increasing slope gradients, it is unclear how much soil damage is caused by different directions of skidding. We examined the effects of traffic frequency, skid trail slope and skidding direction on the dry bulk density and total po...
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Halton Arp has recently (1989) presented empirical criticisms of the validity of tired-light mechanisms as an explanation of anomalous redshifts. This is extremely welcome and represents the beginning of a true discussion among those who are not content with standard big bang cosmology. The unorthodox theories are legion: there almost as many theories as there are unorthodox thinkers in this do...
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Sleep deprivation (SD) critically affects a range of cognitive and affective functions, typically assessed during task performance. Whether such impairments stem from changes to the brain’s intrinsic functional connectivity remain largely unknown. To examine this hypothesis, we applied graph theoretical analysis on resting-state fMRI data derived from 18 healthy participants, acquired during bo...
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ژورنال
عنوان ژورنال: The Forestry Chronicle
سال: 1972
ISSN: 0015-7546,1499-9315
DOI: 10.5558/tfc48069-2