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• Assessment of Fibre Characteristics and Suitability of Sida acuta Burm F. for Pulp and Paper Production

  1-11

  Olayiwola O Ajala

  Funke G Adebawo

  Olaoluwa A. Adegoke

  Oladele Amoo-Onidundu

  Views:

  294

  The ever-increasing demand for paper and paper products and alarming rate of global population growth necessitates research into non-wood fibre to augment the popular wood fibres in short supply. Sida acuta obtained at two locations, samples collected from 3 areas per location. Samples of dimension 10 x 10 x 20 mm macerated in equal volumes of glacial acetic acid and 30% hydrogen peroxide at 80^oC in an oven. Twenty-five whole fibres in swollen condition were measured. Derivatives of fibre dimensions viz:  Runkel ratio, flexibility and slenderness were also evaluated. Pooled mean fibre length was 1.04mm, pooled fibre diameter was 25.02μm, pooled fibre lumen width was 14.69μm and fibre cell wall thickness was 5.17μm. Runkel ratio was 0.73, coefficient of suppleness (flexibility) was 60.05 while felting power (slenderness) was 42. Values obtained connote that S. acuta’s fibre morphology is good for pulping much more that its Runkel ratio (0.73) is less than 1, coefficient of suppleness (60.05) is greater than 50 and its felting power (42) is greater than 33. Specific Gravity ranged from 0.416–0.468. With reference to the above, S. acuta is fairly suitable for pulp and paper making.

• Analysis of Structural Strengths Applied the Cableway Group

  62-66

  Daniel Lates

  Calin Alfianu

  Views:

  184

  This paper will present the analysis of structural strengths for the cableway group. Three loading scenarios were analyzed. Each of these scenarios will be presented on the cableway group and explained with the intervening forces.

• The Logistics Conception of the Value Chain of Wood

  139-154

  Dániel Fróna

  Judit Oláh

  Mónika Harangi-Rákos

  Views:

  311

  The importance of the forest management and timber producing is highly determined by the value chain of timber. The forest management and timber producing can basically contribute to achieve the goals of the sustainable development as producing and processing the wood as a raw material. The relationship of the multifunctional forestry management as producing different scale of products and services results that changing a member of the chain might cause the total net alternation of the forestry system’s added value. The added value of the special areas of the appropriate and sustainable forest management is the infrastructural, recreational and touristic services.