Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Charles Essien"'
Publikováno v:
BioResources, Vol 11, Iss 3, Pp 7512-7521 (2016)
There is currently a request from landowners in southeastern USA to provide a nondestructive tool that can differentiate the quality between stands of 25 and 30 years of age subjected to different thinning treatments. A typical site with various thin
Externí odkaz:
https://doaj.org/article/0cce86bb85924bdc8299d142c1919376
Publikováno v:
European Journal of Wood and Wood Products. 77:1117-1124
Pinus taeda (loblolly pine) is one of the ecologically and economically important conifer species in the southeastern USA. However, a disease decline syndrome, southern pine decline (SPD), associated with beetle-vectored root-infecting fungi, has eme
Publikováno v:
Forest Products Journal. 69:154-158
Methylene diphenyl diisocyanate (pMDI) adhesive used in the manufacture of oriented strand board and particleboard can be partially substituted with soy flour for significant cost savings. The flour is about one-third of the cost of pMDI. Properties
Autor:
Tom Gallagher, Timothy P. McDonald, Brian K. Via, Lori G. Eckhardt, Charles Essien, Qingzheng Cheng
Publikováno v:
European Journal of Wood and Wood Products. 76:1535-1546
Resonance based acoustic tools for evaluating wood properties have been reported to be more accurate in estimating the expected log MOE than time-of-flight (ToF) ones. However, there is no published study on the variations within different brands on
Publikováno v:
Journal of the Indian Academy of Wood Science. 15:52-60
Time-of-flight (ToF) acoustic tools is one of the most practical nondestructive methods for predicting tree stiffness. In the literature, 120 cm between probes has been adopted as the standard for the assessment of tree acoustic velocity. However, th
Publikováno v:
Forest Science. 64:149-158
Autor:
Charles Essien, Timothy P. McDonald, Brian K. Via, Tom Gallagher, Lori G. Eckhardt, Gifty E. Acquah
Publikováno v:
Journal of Forestry Research. 29:1519-1531
Tree improvement programs on loblolly pine (Pinus taeda) in the southeastern USA has focused primarily on improving growth, form, and disease tolerance. However, due to the recent reduction of design values for visually graded southern yellow pine lu
Publikováno v:
Journal of the Indian Academy of Wood Science. 15:10-20
There are several types of acoustic tools commercially available for wood characterization, but they are generally classified into resonance and time-of-flight (ToF) tools. This classification is based upon the mode of velocity estimation for wood. I
Autor:
Brian K. Via, Charles Essien, Qingzheng Cheng, Lori G. Eckhardt, Timothy P. McDonald, Xiping Wang, Tom Gallagher
Publikováno v:
Wood Science and Technology. 51:475-492
The polymeric angle and concentration within the S2 layer of the softwood fiber cell wall are very critical for molecular and microscopic properties that influence strength, stiffness and acoustic velocity of wood at the macroscopic level. The main o
Autor:
Charles Essien, Emmanuel Opuni-Frimpong, Stephen Lartey Tekpetey, James Korang, Emmanuel Appiah-Kubi
Publikováno v:
Journal of the Indian Academy of Wood Science. 13:152-155
Little information exists on the properties of tropical tree species that are now being used in plantations in different tropical countries including Ghana. In this study, the variation in chemical composition and natural durability of both plantatio