7,767 research outputs found

    Competitive neutrality in forestry

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    „h States and Territories have agreed to apply competitive neutrality (CN) requirements to their commercial forestry activities. The implementation of CN varies between jurisdictions and encompasses some differences in approach. „h Several studies have pointed to underpricing of logs by State forest agencies in past years. Underpricing can affect the balance between public and private sector wood production. It can also affect the return the community achieves on its forest assets and may adversely influence agency investment and harvesting decisions. „h CN requires forest agencies to act more commercially, including covering all costs and earning a commercially acceptable rate of return on assets. This should reduce the likelihood of agencies underpricing logs, although difficulties in interpreting rates of return and related information can make it difficult to judge if logs have been sold at their full market value. „h To help assess compliance with CN, the market value of logs can be estimated by calculating their residual value ¡X a value derived by subtracting harvesting, transport and processing costs from prevailing international prices of processed wood products.competitive neutrality - forestry - log pricing

    Tunable Dipolar Capillary Deformations for Magnetic Janus Particles at Fluid-Fluid Interfaces

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    Janus particles have attracted significant interest as building blocks for complex materials in recent years. Furthermore, capillary interactions have been identified as a promising tool for directed self-assembly of particles at fluid-fluid interfaces. In this paper, we develop theoretical models describing the behaviour of magnetic Janus particles adsorbed at fluid-fluid interfaces interacting with an external magnetic field. Using numerical simulations, we test the models predictions and show that the magnetic Janus particles deform the interface in a dipolar manner. We suggest how to utilise the resulting dipolar capillary interactions to assemble particles at a fluid-fluid interface, and further demonstrate that the strength of these interactions can be tuned by altering the external field strength, opening up the possibility to create novel, reconfigurable materials.Comment: 9 pages, 7 figure

    Optimization of a Traffic Signal System through Computer Simulation

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    Cloning, purification and characterization of the 6-phospho-3-hexulose isomerase YckF from Bacillus subtilis

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    The enzyme 6-phospho-3-hexulose isomerase (YckF) from Bacillus subtilis has been prepared and crystallized in a form suitable for X-ray crystallographic analysis. Crystals were grown by the hanging-drop method at 291 K using polyethylene glycol 2000 monomethylether as precipitant. They diffract beyond 1.7 A using an in-house Cu Kalpha source and belong to either space group P6(5)22 or P6(1)22, with unit-cell parameters a = b = 72.4, c = 241.2 A, and have two molecules of YckF in the asymmetric unit

    The wood properties of subtropical and tropical hardwood plantation timber grown for high-value products in Australia

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    Wood quality and properties of plantation grown trees differ from those from mature, natural grown trees and this has implications for processing, manufacturing and product performance. The wood properties of genetically improved and syliculturally managed plantation trees are affected by their faster growth rates younger harvest age. This report summarises the key wood properties of species that are the primary candidates for plantation forestry in the subtropical to tropical region of eastern Australia. The planned end uses for these trees vary from short-rotation pulp to high-value products such as poles, sawn timber for appearance products and engineered wood products including structural plywood and laminated veneer lumber (LVL)

    The experience of individuals with renal failure participating in home haemodialysis: An interpretative phenomenological analysis

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    This study explored the experience of individuals with renal failure undertaking home haemodialysis (HHD). Semi-structured interviews were conducted with six participants who were active HHD users in a UK region. Participants’ accounts were transcribed verbatim and analysed using an interpretative phenomenological approach. Three main themes were identified: (1) embracing treatment and lifestyle freedom and flexibility; (2) re-establishing a sense of self and preferred self-identity; and (3) integrating aspects of active engagement and aspects of supported, life-sustaining dependence. A ‘good fit’ between the HHD user (an independent, self-determined health participant) and the healthcare provision (personalized, enabling) is proposed. </jats:p
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