Results 81 to 90 of about 23,679 (205)

Further tests for termite resistance of Finnish pine heartwood.

open access: yesSilva Fennica, 1986
The natural resistance of Finnish-grown L. heartwood to termites was tested in Zambia in graveyard conditions. The heartwood exhibited some natural resistance but durability was, however, far from practical immunity.
Löyttyniemi, Kari, Uusvaara, Olli
doaj   +1 more source

Effects of potassium/sodium fertilization and water availability on wood properties of Eucalyptus grandis trees [PDF]

open access: yes, 2019
In Brazil. most Eucalyptus plantations are located in regions experiencing periods of water shortage where fertilizers such as potassium (K) are intensively used to achieve high productivity. Recently.
Chaix, Gilles   +2 more
core  

Nirs tools for prediction of main extractives compounds of teak (Tectona grandis L.) heartwood [PDF]

open access: yes, 2012
Biochemical and physiological process which occurred during heartwood formation have consequences on wood properties such as colour, natural durability and some mechanical properties. However, it is very time-consuming to take measurements of extractives
Adima, Augustin Amissa   +8 more
core  

Lannea coromandelica (Houtt.) Merr.: A Comprehensive Review of Its Ethnomedicinal Uses, Phytochemistry and Pharmacological Activity

open access: yesHealth Science Reports, Volume 9, Issue 1, January 2026.
ABSTRACT Background and Aims Lannea coromandelica (Houtt.) Merr., a deciduous tropical tree of the Anacardiaceae family, is traditionally used in Asian ethnomedicine to treat diabetes, skin diseases, ulcers, inflammation, and microbial infections. This review aims to consolidate current knowledge on its ethnomedicinal applications, phytochemistry ...
Nawfal Hasan Siam   +10 more
wiley   +1 more source

Origin and characterisation of the extractable colour of oak heartwood used for ageing spirits

open access: yesJournal of Wood Science, 2020
In this study, investigation is focused on the soluble part of oak heartwood colour, with the objective of defining its impact on the colour of spirits after a barrel ageing.
Nicolas Vivas   +4 more
doaj   +1 more source

Antinomic natural self-protection mechanism in long-lasting woods: a case study with three tropical species from French Guiana [PDF]

open access: yes, 2009
We demonstrate in this work through 3 examples that Amazonian trees may specialize longlasting woods by means of at least to different approaches. Wallaba impregnates its wood with large amounts of weakly antifungal compounds acting in synergy, while ...
Amusant, Nadine   +9 more
core  

Soil property effects on the natural durability, extractive content and colour of teak (Tectona grandis L.f) wood in Togo [PDF]

open access: yes, 2009
Togolese teak is highly resistant to pathogen attack, but natural durability and wood colour vary according to plantation sites and geographical zones. Therefore, further information concerning the influence of environmental parameters and their effects ...
Amusant, Nadine   +3 more
core  

Tree growth acceleration and expansion of alpine forests: The synergistic effect of atmospheric and edaphic change. [PDF]

open access: yes, 2016
Many forest ecosystems have experienced recent declines in productivity; however, in some alpine regions, tree growth and forest expansion are increasing at marked rates.
Horwath, William R   +5 more
core   +2 more sources

Synergistic Roles of Biphasic Ethylene and Hydrogen Peroxide in Wound-Induced Vessel Occlusions and Essential Oil Accumulation in Dalbergia odorifera

open access: yesFrontiers in Plant Science, 2019
The heartwood of Dalbergia odorifera (D. odorifera), named “Jiang Xiang” in traditional Chinese medicine, is highly valuable. Mechanical wounding induced the production of “Jiang Xiang” in D. odorifera.
Zhiyi Cui, Zengjiang Yang, Daping Xu
doaj   +1 more source

Chemistry of Heartwood Formation

open access: yesMokuzai Gakkaishi, 2012
樹木が10年程の齢に達すると,幹や枝などにおいてその中心部から心材が形成される。心材の特性が色調・におい・耐久性など木材の諸性質を左右するといった木材利用上の興味に加え,樹木が心材を形成する意義の理解ならびに心材形成の機構の解明といった植物基礎科学的な興味が,長い間研究者を心材研究・心材形成研究へと向かわせてきた。心材形成は生物学的・化学的・物理学的変化を伴う複雑な樹木生理現象である。中でも化学的な変化となる,心材に特有な物質すなわち心材成分の新生・堆積は,これら化合物自体が色・におい・対生物活性を持つことが多いため,直接的に心材特性の発現に結び付けられ得る,心材形成時の最も顕著な変化現象と言えよう。本総説では心材形成について,主に「心材成分の堆積」に着眼して生理学的見地,生化学的見地,組織(化 ...
openaire   +2 more sources

Home - About - Disclaimer - Privacy