Wood anatomy of the single spec ies of Cana comyrica (hitherto not studied) shows that it belongs in Myricaceae, although it differs from other genera in several respects (axial parenchyma grouped in bands or columns as well as diffuse ; Heterogeneou s Type I rays; more numerous bars per perforat ion plate). The latter two features are primitive for the family . The four genera (Canacomyrica. C...

reports do not differentiate between rarely used woods which commonly cause irritation and commonly used woods which irritate only a small portion of users. The author describes various symptoms and signs which may arise following wood contact and gives a concise explanation of cell-mediated delayed hypersensitivity. Wood chemistry of terpenes, catechols, quinones, alkaloids, and other toxic co...

Experiments were conducted to study CCA-treated wood combustion over a range of temperature and oxygen concentrations with a view to understanding the factors affecting energy and metals recovery from waste treated timber. CCA-treated wood was burned in a furnace at temperatures from 400 to 940 degrees C and oxygen concentrations between 5 and 21%. The ash and condensed volatiles were digested ...

Bamboo is widely distributed in Southeast Asia, Africa, and Latin America. As a major non-wood forest product and wood substitute, bamboo is of increasing interest to ecologists owing to its rapid growth and correspondingly high potential for mitigating climate change. With a long history of production and utilization of bamboo, China is one of the countries with the richest bamboo resources an...

The influence of catalysts on the compositions of char and pyrolysis oil obtained by pyrolysis of wood biomass with pulse current heating was studied. The effects of catalysts on product compositions were analyzed using GC-MS and TEM. The compositions of some aromatic compounds changed noticeably when using a metal oxide species as the catalyst. The coexistence or dissolution of amorphous carbo...

Contemporary society is becoming increasingly dependent on packaging to store products and food. The so-called secondary are produced most often with cardboard or wood. Thus, the differential of this study use forest waste as a raw material produce packaging. aim research was evaluate potential OSB panels Balsa wood [Ochroma pyramidale (Cav. Ex Lam.) Urb., Malvaceae] for production display type...

the influence of initial moisture content on wood decay at different levels of atmospheric oxygen concentration was studied. three fungi, coriolus versicolor (c. versicolor) a white rot, coniophora puteana (c. puteana) a brown rot, and chaetomium globosum (c. globosum) a soft rot, were chosen. the mycelia of the fungi were inoculated in to mini blocks of fagus sylvatica (beech) and pinus sy...

The impact of weed control and fertili7Mion on incnajed tree growth is positive and significant but the effects on wood pmper6es are not well known. lncrernent axes mn, coUac@d from lobldly pine (pinus faeda L) trees growing on an existing site-preparation experiment in the lower Piedmont of Georgia at age 15. The levels of site praparation were: ldearcut only; P-chainsaw, 3-shear and chop; 4-s...

in this study, the disadvantages of wood, which is widely employed in producing music instruments, are discussed. for example, high moisture sensitivity, low impact resistance, and time-consuming procedure as well as various properties of different species or in several parts of one specimen which are the main problems of wooden music instruments are extensively discussed in this paper. many ma...