Samples of southern yellow pine outer bark and wood were tested in compression to determine values for modulus of elasticity, stress at proportional limit, and maximum crushing strength. Results reported here resolve inconsistencies in the compressive strength data previously reported by others for pine bark. Testing of solvent-treated bark blocks suggests that although extractives are present ...

Concentrations of the elements Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, N, Ni, P, Pb, and Zn were measured in needles and bark of Taxus baccata from the urban environment of Wrocław, Poland, and from a control site relatively free from pollution. In Wrocław the concentrations of N, P, K, and Mg in needles were significantly higher than in bark, but concentrations of Cd, Co, Cr, Cu Fe, Ni, and Zn were...

Studies were conducted to identify host location cues used by Roptrocerus xylophagorum (Batzeburg), a larval/pupal parasitoid of bark beetles. In Y-tube olfactometer bioassays, female rylophagorum were attracted to infested bark (i.e., phloem, cambium, and outer corky bark tissues) removed from bolts of loblolly pine, Pinus tueda L., colonized by the late instar larvae and pupae of the bark bee...

Abstract This study aimed to evaluate the effects of natural tannins in laying hens’ diets on production parameters and alterations eggs’ physical properties during storage time temperature. A six weeks experiment was carried out 168 Lohmann Brown hens, 51 age, accommodated within digestibility cages, structured 3 levels. The dietary basic structure same for all tested groups. difference betwee...

Despite the high quality reached by today’s CG tree generators, there exists no realistic model for generating the appearance of bark: simple texture maps are generally used, showing obvious flaws if the tree is not entirely painted by an artist. Beyond modeling the appearance of bark, difficulty lies in adapting the bark features to the age of each branch, ensuring continuity between adjacent ...

Seventy isolates belonging to 3 different species of gram-negative bacilli: E.coli(30), K.pneurnoniae(05), and P.aeruginosa(05), and I specie of gram-positive cocci: S.aureus(30), were used for screening of antibacterial activity of aqueous infusion, decoction and essential oil of cinnamon by standard disc diffusion method. The oil of cinnamon exhibited highest antibacterial activity against S....

EFFECTS OF PRESCRIBED FIRE ON WINTERING, BARK-FORAGING BIRDS IN NORTHERN ARIZONA

Southern yellow pine bark was obtained from an industrial source and subjected to grinding and classification operations to ultimately afford finely ground bark fractions for evaluation as plywood adhesive mix fillers. Specifically, by grinding in a laboratory blender, we were able to generate a bark fraction rich in periderm tissue with its interlocking spiculate stone cells (sclereids). Anoth...

To achieve the zero-waste goal as well sustainability, use of raw materials, especially those from nature, and wood in particular, has to be smart, meaning that resource used its full potential. Since wood-based industry is associated with high intensity generation a relatively large amount residues, residues should for production useful products, otherwise they will easily classified waste aft...

Southern yellow pine (SYP) bark particles and bark extracts have been used only to a limited extent in wood-based composites due to poor performance relative to existing products and/or economic barriers. Our efforts to identify alternative applications for this biomass resource require the development of an improved understanding of the interrelationships between bark anatomy and chemistry. An...