in this study, the effect of nano-silver (ag) treatment on the drying rate and final moisture gradient of poplar wood was investigated. poplar (populous nigra) boards with green dimensions of 100×70×50 and 20 mm were treated with nano-silver (ag) suspension by spraying and immersion method. two concentrations of nano-silver suspension, including 20 and 100 ppm were used. then, the boards were c...

Abstract This study evaluates the application feasibility and properties of cement-bonded particleboards produced from mixed tropical hardwood species. Wood residues a typical sawmill were collected, dried used in manufacturing cement composites. The wood Ceiba pentandra Gmelina arborea timber seven ratios production composite samples. Two control experimental samples containing unmixed each sp...

By the use of transmission electron microscopy (TEM) and energy dispersion spectrometry the amount (mean value mean = 191 +/- 94 fibers/mg of tissue) and the type (chrysotile and tremolite) of asbestos fibers have been determined in tissue samples of four bladder cancer patients affected by pulmonary asbestosis, working in the same plant producing asbestos-cement pipes and boards. Similar measu...

Background The critical role that the board plays in governance of universities clarifies the necessity of evaluating its performance. This study was aimed to evaluate the performance of the boards of medical universities and provide solutions to enhance its performance.   Methods The first phase of present study was a qualitative research in which data were collected through face-to-face semi-...

The combustibility of natural wood presents a negative impact for using this material in buildings. Timber elements can be cladded with boards made non-combustible materials. This study represents group options increasing the resistance timber against effects fire and possibility slowing down effect thermal degradation wood. aim is focused on an experimental testing structures protected by ceme...

The study presents a possible innovative use of cement fiber boards (CFBs) reinforced with cellulose fibers for construction an interior prefabricated staircase. Regarding the unusual traditional material that was used in all bearing elements staircase, numerical simulation model SBETA carried out and, subsequently, multiple experimental static loading applied. In order to carry testing load ca...