نتایج جستجو برای: mature wood

تعداد نتایج: 107225  

Afsaneh Shayesteh Homayoon Ranjbar

Economists believe that the development of the industry sector is for the benefit of other sectors of the economy. In 23 groups of industrial activity in classification ISIC, the production and export of wood industries have received less attention in developing countries. exports of wood products have a major impact on the GDP and provide employment and sustainable development of natural resou...

2012
Evin D. Bruschweiler Brigitta Danuser Cong Khanh Huynh Pascal Wild Patrick Schupfer David Vernez Philippe Boiteux Nancy B. Hopf

Occupational exposures to wood dust have been associated with an elevated risk of sinonasal cancer (SNC). Wood dust is recognized as a human carcinogen but the specific cancer causative agent remains unknown. One possible explanation is a co-exposure to; wood dust and polycyclic aromatic hydrocarbons (PAHs). PAHs could be generated during incomplete combustion of wood due to heat created by use...

1999
David E. Hibbs

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...

2014
Liz O’Brien Jake Morris Amy Stewart

In this paper we engage with debates concerning people and their contact with the natural environment as part of everyday life drawing on Irwin's ideas of co-construction and Gibson's theory of affordances. We focus on peri-urban woodlands in England as important places where people can interact with nature for health and well-being. Qualitative data were collected in situ via walks in the wood...

Journal: :Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering 2006
Mark Gerard Healy Michael Rodgers John Mulqueen

This laboratory study examined the use of various wood materials as a carbon source in horizontal flow filters to denitrify nitrate-nitrogen (NO3-N) from a synthetic wastewater. The filter materials were: sawdust (Pinus radiata), sawdust and soil, sawdust and sand, and medium-chip wood chippings and sand. Two influent concentrations of NO3-N, 200 mg L(-1) and 60 mg L(-1), loaded at 2.9 to 19.4 ...

2017
Seth J Theuerkauf Brandon J Puckett Kathrynlynn W Theuerkauf Ethan J Theuerkauf David B Eggleston

Invasive species can positively, neutrally, or negatively affect the provision of ecosystem services. The direction and magnitude of this effect can be a function of the invaders' density and the service(s) of interest. We assessed the density-dependent effect of an invasive marsh grass, Phragmites australis, on three ecosystem services (plant diversity and community structure, shoreline stabil...

2017
George W. Huber George W Huber Torren R. Carlson Yu-Ting Cheng Jungho Jae

Journal: :Journal of The American Water Resources Association 2022

Abstract Wild salmon stocks in the Pacific Northwest are imperiled by a variety of declining habitat factors, including riparian shade and in‐channel large wood. In this paper, relatively simple lidar model canopy was used along anadromous streams Skagit River watershed western Washington State, United States, to delineate where trees were most lacking, restoration efforts would have greatest b...

2008
Alexandro Caruso Daniel Caruso

The shortage and low diversity of coarse dead wood in managed forests are major threats to wood living organisms. Increasing harvest of slash and stumps for biofuel may further decrease the amounts of dead wood. The aim of this thesis was to predict the impact of forest fuel harvest on lichen diversity in a managed forest landscape. First, lichen diversity was compared between the stem and slas...

2017
Javier Ribera Siegfried Fink Maria Del Carmen Bas Francis W M R Schwarze

The production of new generation of wood preservatives (without addition of a co-biocide) in combination with an exchange of wood poles on identical sites with high fungal inoculum, has resulted in an increase of premature failures of wood utility poles in the last decades. Wood destroying basidiomycetes inhabiting sites where poles have been installed, have developed resistance against wood pr...

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