In the past, there has been an emphasis on conifer tree species in forestry operations in British Columbia. As a result, there is a serious lack of information regarding disease and decay problems in most hardwood tree species. This presentation reports the results of recent studies on levels of decay in natural red alder stands, and on the formation of stain in harvested alder logs. Disease pr...

We conducted a suite of tracer studies using the stable isotope 13C to follow and quantify flow carbon from leaf litter roots into soil components including aggregates biota with without invasive earthworms. Ten-year-old saplings sugar maple growing in understory thinned northern hardwood forest were labeled 13CO2. The was applied plots earthworms (Lumbricidae) traced for three years. also labe...

Three new genera, six species, three combinations, epitypes, and 25 interesting host /or geographical records are introduced in this study. New genera: Neoleptodontidium (based on aquaticum ), Nothoramularia ragnhildianicola ). species: Acremonium (from cooling pad water, USA, Cladophialophora laricicola (on dead wood of Larix sp., Netherlands), Cyphellophora neerlandica lichen brick wall, Geon...

Background Historically, the prevalence of dental caries was higher in urban areas than rural areas of Thailand. This study aim to examine the time trends in caries status in children in Thailand. Material and Methods Linear regression was used to examine trend of dental caries prevalence and mean number of teeth with caries, filled and missing due to caries (dmft/DMFT) in urban and rural, of...

abstract in recent years, the old urban fabrics identification has become a challenging issue in urban planning society in iran. the insufficiency of triple indices which had been introduced by the high council on urban planning and architecture has been criticized by experts several times. in this paper we reconsider the existing urban fabrics identification method and introduce a suitable mod...

This paper compares oral health status and presence of untreated, decayed permanent teeth in abused/neglected children with nonabused/non-neglected controls. The sample comprised 903 children between 5 and 13 years old; 30 were confirmed cases of child abuse and 873 served as controls. Their oral health status was assessed by two calibrated dentists using the DMFS index. Presence of untreated, ...

This research was conducted in the west forest of Guilan, northern Iran. Data from various harvesting methods for 20 years were collected. Results showed that, productivity rate of round wood, pulp wood and fuel wood has had an upward trend, while rate of traditional products (lumber, sawn wood, charcoal, etc.) has had a downward trend. Production cost has been investigated in this research. Th...

Under the auspices of the US Forest Service Forest Products Laboratory and the Coalition for Advanced Wood Structures (CAWS), the Southern Climatic Housing Research Team -a multidisciplinary group of wood scientists, architects, landscape architects, mechanical and civil engineers – is designing a research and demonstration house for the Southeastern United States on the campus of Mississippi S...