scholarly journals Within-stem Variation of Wood Properties in Bud-pruned Melia azedarach

2021 ◽  
Vol 67 (4) ◽  
pp. 197-207
Author(s):  
Kenichiro Yokoo ◽  
Yoshiko Koga ◽  
Hiroki Sakagami ◽  
Junji Matsumura
Keyword(s):  
Wood Properties ◽  
Melia Azedarach

scholarly journals Variation in intrinsic wood properties of Melia azedarach L. planted in northern Vietnam

2017 ◽  
Vol 63 (6) ◽  
pp. 560-567 ◽  
Author(s):  
Doan Van Duong ◽  
Edward Missanjo ◽  
Junji Matsumura
Keyword(s):  
Wood Properties ◽  
Melia Azedarach ◽  
Northern Vietnam

Allelopathic effects of Melia azedarach L. on germination, growth and yield of black gram and chickpea

2019 ◽  
Vol 46 (1) ◽  
pp. 133-144 ◽  
Author(s):  
N. S. Thakur ◽  
D. Kumar ◽  
R. S. Chauhan ◽  
H. T. Hegde ◽  
R P. Gunaga
Keyword(s):  
Growth And Yield ◽  
Melia Azedarach ◽  
Black Gram ◽  
Allelopathic Effects

Herbicidal potential of aqueous extracts from Melia azedarach L., Artemisia arborescens L., Rhus coriaria L. and Lantana camara L.

2017 ◽  
Vol 41 (1) ◽  
pp. 81-92 ◽  
Author(s):  
A. Labruzzo ◽  
A. Carrubba ◽  
G. Di Marco ◽  
T. Ebadi
Keyword(s):  
Lantana Camara ◽  
Melia Azedarach ◽  
Aqueous Extracts ◽  
Rhus Coriaria

Exploration of Antibacterial Potential of Melia Azedarach L.

2017 ◽  
Vol 1 (1) ◽  
pp. 19-26 ◽  
Author(s):  
T. Munir ◽  
◽  
A. Mohyuddin ◽  
Z. Khan ◽  
R. Haq ◽  
...  
Keyword(s):  
Melia Azedarach ◽  
Antibacterial Potential

FEEDBACK OF WATER STRESS ON WOOD PROPERTIES OF TREES: EXPERIMENTS WITH MISTLETOES ON RHODODENDRON ARBOREUM SM.

1970 ◽  
Vol 11 (1) ◽  
Author(s):  
Mohan P. Devkota ◽  
Gerhard Glatzel
Keyword(s):  
Water Stress ◽  
Wood Anatomy ◽  
Wood Properties ◽  
Vessel Diameter ◽  
Conservation Area ◽  
Rhododendron Arboreum ◽  
Central Nepal ◽  
Inhibition Of Growth ◽  
Infected Area ◽  
Anatomical Parameters

Effects of infection by the mistletoe Scurrula elata (Edgew.) Danser, on wood properties of its common host Rhododendron arboreum Sm., were studied in the Annapurna Conservation Area of Central Nepal Himalaya. Heavy infection by mistletoes invariably causes decline of the host. Infested branches show inhibition of growth, defoliation and eventual death of branch parts distal to the site of infection. Anatomical properties of wood were compared in samples of branches proximal to the infection and in uninfected branches. The hypothesis that infection induces changes in basic wood anatomy could not be proven. Vessel density, vessel area, percentage lumen area and mean vessel diameter of the wood of infested and uninfected branches did not show any significant differences. The studied anatomical parameters were not correlated to the diameter of the host branch. These results show that infection by S. elata did not cause any changes in basic wood anatomy of its host R. arboreum. It appears that the studied anatomical parameters of Rhododendron wood are fairly stable and are not changed by stress due to infection by mistletoes. The damage to the host distal to the infected area most likely results from an insufficiency of total conductive area to supply both mistletoe and host. Unfortunately we could not determine annual conductive area increment, because R arboreum does not develop usable annual tree rings in the climate of the study area. Key words: Himalayas, mistletoe. Rhododendron arboreum, Scurrula elata, water stress, wood anatomy. Ecoprint Vol.11(1) 2004.

Remediation of heavy metal polluted soil by utilizing organic amendments and two plant species (Ailanthus altissima and Melia azedarach)

2021 ◽  
Vol 14 (13) ◽  
Author(s):  
Fatemeh Mohebzadeh ◽  
Babak Motesharezadeh ◽  
Mohammad Jafari ◽  
Salman Zare ◽  
Maryam Saffari Aman
Keyword(s):  
Heavy Metal ◽  
Plant Species ◽  
Organic Amendments ◽  
Polluted Soil ◽  
Ailanthus Altissima ◽  
Melia Azedarach

scholarly journals Effect of Furfurylation on Hierarchical Porous Structure of Poplar Wood

Polymers ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 32
Author(s):  
Xiaoshuang Shen ◽  
Pan Jiang ◽  
Dengkang Guo ◽  
Gaiyun Li ◽  
Fuxiang Chu ◽  
...  
Keyword(s):  
Porous Structure ◽  
Value Added ◽  
Untreated Wood ◽  
Weight Percent Gain ◽  
Wood Properties ◽  
Weight Percent ◽  
Acoustic Properties ◽  
Hierarchical Porous Structure ◽  
Wood Processing ◽  
Hierarchical Porous

Some wood properties (such as permeability and acoustic properties) are closely related to its hierarchical porous structure, which is responsible for its potential applications. In this study, the effect of wood impregnation with furfuryl alcohol on its hierarchical porous structure was investigated by microscopy, mercury intrusion porosimetry and nuclear magnetic resonance cryoporometry. Results indicated decreasing lumina diameters and increasing cell wall thickness of various cells after modification. These alterations became serious with enhancing weight percent gain (WPG). Some perforations and pits were also occluded. Compared with those of untreated wood, the porosity and pore volume of two furfurylated woods decreased at most of the pore diameters, which became more remarkable with raising WPG. The majority of pore sizes (diameters of 1000~100,000 nm and 10~80 nm) of macrospores and micro-mesopores of two furfurylated woods were the same as those of untreated wood. This work could offer thorough knowledge of the hierarchical porous structure of impregnatedly modified wood and pore-related properties, thereby providing guidance for subsequent wood processing and value-added applications.

scholarly journals Hybrid Approach for Wood Modification: Characterization and Evaluation of Weathering Resistance of Coatings on Acetylated Wood

Coatings ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 658
Author(s):  
Anna Sandak ◽  
Edit Földvári-Nagy ◽  
Faksawat Poohphajai ◽  
Rene Herrera Diaz ◽  
Oihana Gordobil ◽  
...  
Keyword(s):  
Service Life ◽  
Hybrid Approach ◽  
Wood Properties ◽  
Wood Products ◽  
Superior Performance ◽  
Surface Erosion ◽  
Coating Film ◽  
Chemical Treatments ◽  
Cellular Wall ◽  
Bulk Substrate

Wood, as a biological material, is sensitive to environmental conditions and microorganisms; therefore, wood products require protective measures to extend their service life in outdoor applications. Several modification processes are available for the improvement of wood properties, including commercially available solutions. Among the chemical treatments, acetylation by acetic anhydride is one of the most effective methods to induce chemical changes in the constitutive polymers at the cellular wall level. Acetylation reduces wood shrinkage-swelling, increases its durability against biotic agents, improves UV resistance and reduces surface erosion. However, even if the expected service life for external cladding of acetylated wood is estimated to be 60 years, the aesthetics change rapidly during the first years of exposure. Hybrid, or fusion, modification includes processes where the positive effect of a single treatment can be multiplied by merging with additional follow-up modifications. This report presents results of the performance tests of wood samples that, besides the modification by means of acetylation, were additionally protected with seven commercially available coatings. Natural weathering was conducted in Northern Italy for 15 months. Samples were characterized with numerous instruments by measuring samples collected from the stand every three months. Superior performance was observed on samples that merged both treatments. It is due to the combined effect of the wood acetylation and surface coating. Limited shrinkage/swelling of the bulk substrate due to chemical treatment substantially reduced stresses of the coating film. Hybrid process, compared to sole acetylation of wood, assured superior visual performance of the wood surface by preserving its original appearance.

Phytochemical investigations and in vitro bioactivity screening on Melia azedarach L. leaves extract from Nepal

2021 ◽  
Author(s):  
Stefano Dall'Acqua ◽  
Shyam Sharan Shrestha ◽  
Irene Ferrarese ◽  
Stefania Sut ◽  
Gokhan Zengin ◽  
...  
Keyword(s):  
Melia Azedarach ◽  
In Vitro Bioactivity
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