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Elementary software for the hand lens identification of some common iranian woods

A computer program, ?Hyrcania?, has been developed for identifying some common woods (26 hardwoods and 6 softwoods) from the Hyrcanian forest type of Iran. The program has been written in JavaScript and is usable with computers as well as mobile phones. The databases use anatomical characteristics (visible with a hand lens) and wood colour, and can be searched in...

https://www.fs.usda.gov/treesearch/search?keywords=%2226%29.%22&%3Bf%5B0%5D=nrt_combined%3A%22Ecology%2C%20Ecosystems%2C%20%26%20Environment%21Plant%20ecology%22&f%5B0%5D=author_facet%3A%22Devall%2C%20Margaret%22&f%5B1%5D=author_facet%3A%22Hermanson%2C%20John%22&f%5B2%5D=author_facet%3A%22Dramm%2C%20John%22&f%5B3%5D=author_facet%3A%22Baggett%2C%20Scott%22&f%5B4%5D=author_facet%3A%22Gu%2C%20Hongmei%22&f%5B5%5D=author_facet%3A%22Moore%2C%20Roderquita%22&f%5B6%5D=author_facet%3A%22Steel%2C%20Ashley%22

Author(s):

Vahidreza Safdari; Margaret S. Devall

Year:

2009

Keywords:

Wood identification, computerized program, Iranian hardwoods, lens

Source:

IAWA Journal, Vol. 30(1): 81-86

Measuring the triaxial load-deformation response of orthotropic materials subjected to large and small strain regimes

A new method for obtaining triaxial stress versus strain data is presented. The method tests cubic specimens and can provide constitutive data along three mutually perpendicular axes. Issues of removing the effects of boundary conditions in the proposed device are discussed. Two devices were constructed and used to obtain triaxial stress versus strain data on...

Author(s):

Edmond P. Saliklis; Steven M. Cramer; John C. Hermanson

Year:

1998

Keywords:

Sequoia sempervirens, Wood properties, Paperboard, Deformation, Stress strain curves, Compressive strength, Triaxial tests

Source:

Journal of testing and evaluation. Vol. 26, no. 5 (Sept. 1998).:p. 444-454 : ill.

Small-diameter utilization issues and opportunities

This presentation provides a thought-provoking look at options for utilizing small- diameter wood to help reduce the widespread risk of catastrophic wildfire throughout the West while providing economic recovery of timber-depressed communities and sustaining viable forest products industry. Potentially viable utilization and marketing options are explored and current...

Author(s):

John Rusty Dramm

Year:

1999

Keywords:

Biomass, utilization, sustainable forestry, value added, forest products, economic aspects, forest products industry, fuel reduction, wildfire prevention, softwoods, West, market surveys, marketing, rural development, small timbers, smallwood

Source:

Conference proceedings : Wood Technology Clinic & Show ... Portland, Oregon, USA, March 24-26, 1999. [San Francisco] : Wood Technology, [1999?]: pages 30-38.

Defining old growth in the Southeast: example of cypress

There is a lot of misunderstanding over what comprises an old growth stand, because there is no well accepted definition of old growth. Malcolm Hunter proposed a broad conceptual definition: "old-growth forests are relatively old and relatively undisturbed by humans." Because there can be large differences among forest types, Hunter suggested that specific...

Author(s):

Margaret S. Devall; Paul C. van Deusen; Gregory A. Reams

Year:

1999

Keywords:

Source:

n: Miller, Gary L., ed. The value of old growth forest ecosystems of the Eastern United States: conference proceedings; 1993 August 26-28; Asheville, NC. Asheville, NC: University of North Carolina, Asheville: 81-86.

Finite element analyses of two dimensional, anisotropic heat transfer in wood

The anisotropy of wood creates a complex problem for solving heat and mass transfer problems that require analyses be based on fundamental material properties of the wood structure. Inputting basic orthogonal properties of the wood material alone are not sufficient for accurate modeling because wood is a combination of porous fiber cells that are aligned and mis-...

Author(s):

John F. Hunt; Hongmei Gu

Year:

2004

Keywords:

Mass transfer, mathematical models, thermal conductivity, heat transmission, anisotropy, finite element method, heat flux, thermal properties, heat conduction, porosity, orientation, wood anatomy, tree-rings, earlywood, latewood

Source:

2004 International ANSYS Conference : Pittsburgh, PA, May 24-26, 2004. [S.l. : s.n., 2004]: 13 pages.

Editorial: Papers from the 7th International Conference on Dendrochronology - Cultural Diversity, Environmental Variability

The 7th International Conference on Dendrochronology - Cultural Diversity, Environmental Variability was held in Beijing, China from 11 to 17 June 2006. The conference was organized and hosted by the Institute of Botany, Chinese Academy of Sciences (IB_CAS) in conjunction with the International Union of Forest Research Organizations (IUFRO) Working Group 5.01.07 (Tree-...

Author(s):

Margaret S. Devall; Elaine K. Sutherland

Year:

2008

Keywords:

dendrochronology, tree rings

Source:

Dendrochronologia. 26: 143-144.

Financial feasibility of a log sort yard handling small-diameter logs: A preliminary study

The value and use of the trees removed in fuel reduction thinning and restoration treatments could be enhanced if the wood were effectively evaluated and sorted for quality and highest value before delivery to the next manufacturing destination. This article summarizes a preliminary financial feasibility analysis of a log sort yard that would serve as a log market to...

Author(s):

Han-Sup Han; E. M. (Ted) Bilek; John (Rusty) Dramm; Dan Loeffler; Dave Calkin

Year:

2011

Keywords:

small wood utilization, value recovery, fuel reduction thinning, wood marketing

Source:

Western Journal of Applied Forestry. 26(4): 174-182.

Evaluation of Fungal Deterioration in Liquidambar orientalis Mill. heartwood by FT-IR and light microscopy.

The chemical and morphological changes in heartwood specimens of Liquidambar orientalis Mill. caused by the white-rot fungus Trametes versicolor and the brown-rot fungi Tyromyces palustris and Gloeophyllum trabeum were studied by wet chemistry, FT-IR, GC-MS analyses, and photo-...

Author(s):

Nural Yilgor; Dilek Dogu; Roderquita Moore; Evren Terzi; S. Nami Kartal

Year:

2013

Keywords:

Fungal degradation, GC-MS, Extractives, Morphology of wood decay, FT-IR, Liquidambar orientalis

Source:

BioResources

Mechanical and time-dependent behavior of wood-plastic composites subjected to tension and compression

The thermoplastics within wood?plastic composites (WPCs) are known to experience significant time-dependent deformation or creep. In some formulations, creep deformation can be twice as much as the initial quasi-static strain in as little as 4 days. While extensive work has been done on the creep behavior of pure polymers, little information is available on the...

Author(s):

Scott E. Hamel; John C. Hermanson; Steven M. Cramer

Year:

2012

Keywords:

Creep, wood—polymer composite, power-law, tension, compression

Source:

Journal of Thermoplastic Composite Materials Volume 26, Number 7, 2012; pp. 968–987.

Predicting the flexure response of wood-plastic composites from uni-axial and shear data using a finite-element model

Wood-plastic composites (WPCs), commonly used in residential decks and railings, exhibit mechanical behavior that is bimodal, anisotropic, and nonlinear viscoelastic. They exhibit different stress-strain responses to tension and compression, both of which are nonlinear. Their mechanical properties vary with respect to extrusion direction, their deformation under...

Author(s):

Scott E. Hamel; John C. Hermanson; Steven M. Cramer

Year:

2014

Keywords:

Creep, Polymer, Composite materials, Finite element method, Data analysis

Source:

Journal of Materials in Civil Engineering

Experimental and modeling study of forest fire effect on soil thermal conductivity

An understanding of soil thermal conductivity after a wildfire or controlled burn is important to land management and post-fire recovery efforts. Although soil thermal conductivity has been well studied for non-fire heated soils, comprehensive data that evaluate the long-term effect of extreme heating from a fire on the soil thermal conductivity are limited....

Author(s):

Kathleen M. Smits; Elizabeth Kirby; William J. Massman; Scott Baggett

Year:

2016

Keywords:

controlled burn, degree of saturation, empirical model, water content, wildfire

Source:

Pedosphere. 26(4): 462-473.

Biomass accumulation in the endangered shrub Lindera melissifolia as affected by gradients of light availability and soil flooding

We studied the impacts of light availability and soil flooding on biomass accumulation and tissue biomass fractions in Lindera melissifolia (Walt.) Blume, an endangered woody shrub of the southeastern United States. Our experiment was located in a large-scale flooding research facility where plants were established and grown for three years while receiving combinations...

Author(s):

Brian Roy Lockhart; Emile Gardiner; Theodor Leininger; Paul Hamel; A Dan Wilson; Margaret Devall; Nathan Schiff; Kristina F. Connor

Year:

2018

Keywords:

environmental interactions, Flooding Research Facility, growth stress factors, phenotypic plasticity, pondberry, shade houses, tissue fractions

Source:

Forest Science

A cross-continental comparison of plant and beetle responses to retention of forest patches during timber harvest

Timber harvest can adversely affect forest biota. Recent research and application suggest that retention of mature forest elements ('retention forestry'), including unharvested patches (or 'aggregates') within larger harvested units, can benefit biodiversity compared to clearcutting. However, it is unclear whether these benefits can be generalized...

Author(s):

Susan C. Baker; Charles B. Halpern; Timothy J. Wardlaw; Christel Kern; Graham J. Edgar; Russell J. Thomson; Richard E. Bigley; Jerry F. Franklin; Kamal J. K. Gandhi; Lena Gustafsson; Samuel Johnson; Brian J. Palik; Thomas A. Spies; E. Ashley Steel; Jan Weslien; Joachim Strengbom

Year:

2016

Keywords:

aggregated retention, biodiversity, conservation, edge effects, forest influence, ground-active beetles, lifeboating, logging, retention forestry, vascular plants

Source:

Ecological Applications

Total Publications in Treesearch: 53,196

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Elementary software for the hand lens identification of some common iranian woods

Measuring the triaxial load-deformation response of orthotropic materials subjected to large and small strain regimes

Small-diameter utilization issues and opportunities

Defining old growth in the Southeast: example of cypress

Finite element analyses of two dimensional, anisotropic heat transfer in wood

Editorial: Papers from the 7th International Conference on Dendrochronology - Cultural Diversity, Environmental Variability

Financial feasibility of a log sort yard handling small-diameter logs: A preliminary study

Evaluation of Fungal Deterioration in Liquidambar orientalis Mill. heartwood by FT-IR and light microscopy.

Mechanical and time-dependent behavior of wood-plastic composites subjected to tension and compression

Predicting the flexure response of wood-plastic composites from uni-axial and shear data using a finite-element model

Experimental and modeling study of forest fire effect on soil thermal conductivity

Biomass accumulation in the endangered shrub Lindera melissifolia as affected by gradients of light availability and soil flooding

A cross-continental comparison of plant and beetle responses to retention of forest patches during timber harvest

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