نتایج جستجو برای: timber

تعداد نتایج: 8181  

Journal: :Trends in ecology & evolution 2017
Daniel P Faith Susana Magallón Andrew P Hendry Michael J Donoghue

tance of dipterocarps in the global timber industry. Part of the value of timber from Southeast Asia is that most comes from dipterocarps; it is light and easily worked and can be sold in large volumes under just a few wood types. One of the great tragedies of the Asian timber industry is that dipterocarp forests are amenable to selective harvesting and long-term management, but economic and po...

2002
Andrew P. Black Magnus Carlsson Mark P. Jones Richard Kieburtz Johan Nordlander

May of the features of Timber have been adopted from the reactive object-oriented concurrent functional language O’Haskell [15], which was in turn defined as an extension to the purely functional language Haskell [12]. However, the Haskellian ancestry of Timber should not cause it to be ignored by the wider (non-functional) programming language community. Indeed, Timber attempts to combine the ...

2016
Birgit Östman Daniel Brandon

The combustibility of timber is one of the main reasons that many building regulations strictly limit the use of timber as a building material. Fire safety is an important contribution to feeling safe, and an important criterion for the choice of building materials. The main precondition for an increased use of timber in buildings is adequate fire safety. This paper reviews the opportunities an...

2000

The use of timber in structures like guard-rail systems requires knowledge about the behaviour at high loading rates. The present study aims at presenting a state of art report with respect to the impact bending strength of timber and to some extent to the behaviour of timber joints at high loading rates. The literature review indicates a difference in the experimental results and the conclusio...

2011
James D.A. Millington Michael B. Walters Megan S. Matonis Edward J. Laurent Kimberly R. Hall Jianguo Liu

Please cite this article in press as: Millington, J songbirds and timber production. Forest Ecol. The structure of forest stands is an important determinant of habitat use by songbirds, including species of conservation concern. In this paper, we investigate the combined long-term impacts of variable tree regeneration and timber management on stand structure, songbird occupancy probabilities, a...

2002
Michael A. Dunn Mark R. Dubois

An econometric analysis was conducted with the intent of discovering the relationship between contractual provisions, as specified in timber sale notices, with high bids received for those timber sales. Specifically, the goal of this study was to determine the relationship between high bids for timber tracts and certain contractual stipulations that have not previously been explored to any grea...

2011
ERIKA KOZEM ŠILIH MIROSLAV PREMROV

The paper presents an experimental analysis of timber – framed wall panels with openings, coated with single fibre-plaster boards fastened to a timber frame. The present study is a continuation of the research work realized in the last years in reinforcing of the prefabricated timber-framed wall panels without any openings. The aim of the study presented here was to provide the information abou...

2010
Antony Darby Tim Ibell Mark Evernden

Timber gridshells have become a very popular, efficient, sustainable and beautiful structural application of timber. However, given the slender laths involved in this form of construction, there is concern over the durability of timber for this purpose, and Glass FRP (GFRP) laths have been proposed as a possible substitution. This paper considers this possibility. It goes on to look at the poss...

Journal: :علوم و تکنولوژی پلیمر 0
محراب مدهوشی سحر سادات زاده قنبر ابراهیمی

failure in timber structures occurs mainly in crucial points such as joints areas. therefore, the idea of using composite sheets in timber joints has been intro-duced as a method in order to increase the strength and ductility behaviour of timber joints. this research aims to study the behaviour of bolted joints in poplar and pine woods, which are reinforced by two types of gfrp sheets. a singl...

2008
Harry J. Paarsch John Rust Mark Weldon

We construct an intertemporal model of rent-maximizing behaviour on the part of a timber harvester under potentially multi-dimensional risk as well as geographical heterogeneity. Subsequently, we use recursive methods (in particular, the method of dynamic programming) to characterize the optimal policy function, the rent-maximizing timber-harvesting profile. One noteworthy feature of our applic...

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