F IRE HAS COME to be widely llsed as a tool in wildland management, particularly in the South. Its usefulness in fire hazard reduction, removal of undesirable trees, and changing of cover types has been demonstrated. We are continually trying to improve fire lISC, however, by learning more of the specific effects of fire on different species of plants. lvlosr fire effects studies are conducted ...

Inter-clonal and intra-clonal wood properties and their variations from pith to bark were evaluated for wood density and anatomical features on rubber wood (Hevea brasiliensis Muell. Arg) from a 9-year-old plantation with planting densities of 500 and 2000 trees per hectare comprised of clones RRIM 2020 and RRIM 2025. Planting density had uneven effects on wood density and wood cell features. I...

In the southeastern United States, establishment of short-rotation intensively cultured plantations hybrid poplar has been hindered by its susceptibility to stem cankers. We evaluated tradeoffs between biomass yield and disease tolerance in genotypes belonging P. deltoides × maximowiczii (DM), nigra (DN), trichocarpa (TM), (DD) taxa. hypothesized that canker resistant will have thicker bark but...

The effects of the tool tip radius on debarking quality unfrozen and frozen black spruce logs were studied. power, energy consumption torque conditions also A proto-type one-arm ring debarker was used. experiment consisted using three radii (40, 180, 300 µm) for each temperature (-20°C +20°C). rotational feed speeds, overlap, rake angle kept constants. Debarking evaluated by two criteria: propo...

this research was conducted to investigate the effect of planting space on fiber morphology of acer velutinum. in this work, from each treatment including planting space of 1×1, 1.5×1.5 and 2×2 meters, four trees were cut from shastkalateh plantation of gorgon university and factors such as length and annual diametrical growth of trees as well as length, diameter and wall thickness of fibers we...

BACKGROUND The emergence of drug resistant pathogens becomes a crucial problem for infectious diseases worldwide. Among these bacteria, Pseudomonas aeruginosa is one of which highly resists to many currently used drugs and becomes a major concern in public health. Up till now, the search for potential antimicrobial agents has been still a challenge for researchers. METHODS Broth microdilution...