A systematic compilation of 21 different property values of wood and bark fue1 was made to facilitate the engineering analysis and modeling of combustion systems. Physical property values vary greatly and properties such as density, porosity, and internal surface area are related to wood species whereas bulk density, particle size, and shape distribution are related to fuel preparation methods....

ABSTRACT The addition of wood ash to soil is an alternative disposing this residue. However, the effects on physical-hydric properties remain divergent. In study, added water characteristic curve, gravitational water, field capacity, total available and saturated hydraulic conductivity were evaluated in Oxisol (40% clay texture) Quartzipsamment (6% sand texture). experimental design was complet...

The influence of physical and chemical properties of 20 species of imported wood on degradation of the wood by termites under field conditions was studied. The wood species studied were: Sycamore maple, Acer pseudoplatanus L. (Sapindales: Sapindaceae) (from two countries), Camphor, Dryobalanops aromatic C.F.Gaertner (Malvales: Dipterocarpaceae), Beech, Fagus grandifolia Ehrhart (Fagales: Fagace...

The assembly of an RNA polymerase II initiation complex at a promoter is associated with the melting of the DNA template to allow the polymerase to read the DNA sequence and synthesize the corresponding RNA. Using the specific single-stranded modifying reagent KMnO4 and a new genomic sequencing technique, we have explored the melted regions of specific genes in genomic DNA of whole cells or of ...

The evolution of laws on the use of biocide products has led to important changes in the field of wood preservation leading to an increasing interest for non “biocidal treatments” like thermal or chemical modifications. While thermal modifications become more and more common on industrial scale, development of chemical modifications progresses slowly. One reason for the challenges encountered i...

A quantitative evaluation of wood chemical components for some tree species in a forest area from east-northern Romania is presented here, through a comparative study from 1964 to 2000. Investigation upon the wood tree-rings in a Quercus robur L. tree species, as a dominant species, as regards its chemical composition and structure of the natural polymer constituents cellulose and lignin was al...

Overview Description of real life problem Motivation for choosing a multiple objective model Multiple objective model (decision variables, objectives, constraints) Technique used to solve the problem Analysis of results Opinion about the proposed model and solution approach Description of the real life problem We consider a waste incineration plant Input : Waste (cardboard, wood, glass, food wa...

Buxus wallichiana Baill, belongs to family Buxaceae. Traditionally Buxus wallichiana is used as bittertonic, diaphoretic, anti-rheumatic, vermifuge, antihelmentic, analgesic, purgative, diuretic, antiepileptic, antileprotic and in hemorrhoids. Th is paper deals with the macroscopic, microscopic and powdered studies of Buxus wallichiana wood, along with this physical constants like ash values an...

Pigment disorders1,3 Hypopigmentation or depigmentation. Lesions demonstrate increased sharpness of borders under Wood lamp examination and fluoresce bright blue-white owing to the increased amount of dermal collagen illuminated. This results from decreased or absent intervening melanin. Vitiligo: patches, varying in location and extent. Tuberous sclerosis: patches; characteristic shapes are la...