Relevant bibliographies by topics / Wood – Preservation – Evaluation

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Academic literature on the topic 'Wood – Preservation – Evaluation'

Author: Grafiati
Published: 4 June 2021
Last updated: 18 February 2022

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Journal articles on the topic "Wood – Preservation – Evaluation"

1

Enukwa, Ettagbor Hans, and Yilom Hyginus Ndang. "EFFECTS OF NEEM OIL ON THE PRESERVATION OF MILICIA EXCELSA: EVALUATION OF TERMITICIDAL EFFECTIVENESS." International Journal of Research -GRANTHAALAYAH 8, no. 12 (2021): 315–22. http://dx.doi.org/10.29121/granthaalayah.v8.i12.2020.2873.

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Wood usage has increased with time, thus, there is need to investigate how wood can be treated with human and environmentally friendly preservative which is effective in protecting wood from termites and other agents of wood deterioration, or improve the wood physical, chemical, mechanical and biological characteristics. The aim of this study was therefore to evaluate the effects of neem oil on Milicia excelsa wood preservation. Treated and untreated pieces of Milicia excelsa wood samples were used to carry out this experiment, a soil bed, and an internal wood exposure to termite’s test was carried out, and measurements taken using a digital weighing machine. The results obtained showed that, when Milicia excelsa is treated with neem oil, its Rate of Decay (ROD) reduces as compared to the untreated pieces. Also, neem oil treated wood when exposed to termite’s attack experiences a slower weight loss compared to untreated samples with significant weight loss. Neem oil is thus not only effective in preserving woods, but also non- toxic to human and the environment.
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Machado, Gilmara de Oliveira, Laurie J. Cookson, André Luis Christoforo, et al. "Wood Preservation Based on Neem Oil: Evaluation of Fungicidal and Termiticidal Effectiveness." Forest Products Journal 63, no. 5-6 (2013): 202–6. http://dx.doi.org/10.13073/fpj-d-13-00050.

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TSUNODA, KUNIO. "Application of Borates to Wood Preservation (2) Field Evaluation and Applicability to the Preservative Treatment of Composites." Wood Preservation 25, no. 6 (1999): 251–62. http://dx.doi.org/10.5990/jwpa.25.251.

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Monachon, Mathilde, Magdalena Albelda-Berenguer, Tiziana Lombardo, et al. "Evaluation of Bio-Based Extraction Methods by Spectroscopic Methods." Minerals 10, no. 2 (2020): 203. http://dx.doi.org/10.3390/min10020203.

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New technologies are in development regarding the preservation of waterlogged archaeological wood items contaminated with Fe/S species. To this purpose, a bio-based treatment to extract these harmful species before further damages occur is presented. Thiobacillus denitrificans and desferoxamine were employed based on their specific properties to solubilize iron sulfides and uptake iron. The biological treatment was compared with oxidizing and complexing agents (sodium persulfate and ethylene diamine tetraacetate) traditionally used in conservation-restoration. Mock-ups of fresh balsa as well as fresh and archeological oak and pinewood were prepared to simulate degraded waterlogged wood by immersion in corrosive Fe/S solutions. The efficiency of both biological and chemical extraction methods was evaluated through ATR-FTIR and Raman spectroscopies and validated by statistical approach. Results showed that treatments did not affect the wood composition, meaning that no wood degradation was induced. However, the chemical method tended to bleach the samples and after treatment, reduced sulfur species were still identified by Raman analyses. Finally, statistical approaches allowed validating ATR-FTIR results.
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Novotná, P., J. Tříska, P. Híc, et al. "Musts with an increased content of lignans from added spruce knot chips." Czech Journal of Food Sciences 34, No. 4 (2016): 318–24. http://dx.doi.org/10.17221/478/2015-cjfs.

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Red and white musts were enriched with the lignan hydroxymatairesinol, which is the main lignan contained in spruce knots. Chips from the milled spruce knots were then used to enrich grape musts. After enrichment, the musts were stored and samples were taken in 1, 5, 9, and 12 months. The samples were subjected to a variety of analyses and sensory evaluations. Analyses included hydroxymatairesinol and alpha-conidendrin content, antioxidant activity (determined by the FRAP method), content of total polyphenols, sensory evaluation (intensity of woody aroma, intensity of bitterness and astringent taste, and consumer acceptability), and must antimutagenicity. The analysis of variance allowed predicting which factors such as grape type, quantity of added wood chips, sugar addition, method of preservation, and storage time had the most significant influence on the analytical parameters (lignan content, antioxidant activity, and total polyphenol content). In all cases lignan content in the musts was significantly influenced by the addition of spruce wood chips. Total polyphenol content in the musts was significantly affected by the type of musts and by heat treatment (time of thermomaceration). Evaluation of must antimutagenicity showed that all samples, except the sample of white musts after thermomaceration without holding at temperature and without adding chips (10 g/20 kg mash), inhibited mutagenicity.
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Babiński, Leszek, Dorota Izdebska-Mucha, and Bogusława Waliszewska. "Evaluation of the state of preservation of waterlogged archaeological wood based on its physical properties: basic density vs. wood substance density." Journal of Archaeological Science 46 (June 2014): 372–83. http://dx.doi.org/10.1016/j.jas.2014.03.038.

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Boguslaw, Andres, Anna Rozanska, Agnieszka Jankowska, and Jakub Sandak. "Influence of Fungi on the State of Preservation and on the Usage Prospects of Antique Wooden Floor from Manor Houses in South-Eastern Poland." Advanced Materials Research 778 (September 2013): 810–17. http://dx.doi.org/10.4028/www.scientific.net/amr.778.810.

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Floor structures are an integral part and a valuable element of antique buildings, and the only limitation of their preservation consists in their usage properties. A thorough study of their state of preservation is the starting point for choosing the correct conservation programmes. Currently, fungi are the main reason that leads to the replacement of antique wooden parquets in Poland. Simple visual inspections in many cases do not ensure a precise evaluation of the level of fungal infestation and the depth of penetration of the myceliums hyphae in the wood. Tests of ergosterol, which is a component of most fungis cell membrane, allow us to monitor the level of fungi infestation of diverse materials. This makes it possible to determine the depth of mycelium penetration within the wood quite precisely. Unfortunately, in case of basidiomycota it is not possible to correlate ergosterol with the myceliums biomass nor with the grade of wood degradation. Moreover, tests of ergosterol are not able to answer the question whether the fungi infestation is active, because this substance is also present in dead fungi hyphae. The presence of ergosterol in the wood can only give us a hint of presence of a substrate mycelium, which is responsible for the secretion of exoenzymes that degrade structural substances. Therefore, only the test results of ergosterol content and of the woods chemical composition, wettability curve and moisture equivalent, as well as computer simulations of its capacity to transfer own and usage loads (on the basis of the elasticity modulus, bending strength and wood density) together with the hardness, resistance to abrasion and resistance to scratches of wooden parquets permit us to take a correct decision as to the possibility of their further usage. The research carried out shows that, in many cases, parquets infested with fungi can be used safely. The article presents the proprieties that are important in the correct assessment of antique wooden parquets state of preservation and usage prospects. It specifies the factors that permit to eliminate the problem of fungi infestation and describes the proper usage conditions, proposing efficient methods of conservation.
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Ogunjobi, K. M., S. O. Abdulwahab, O. F. Gakenou, O. E. Thompson, and O. Olorunfemi. "Qualitative and quantitative evaluation of the phytochemical constituents of three wood species in Ogun state, Nigeria." Tropical Plant Research 7, no. 3 (2020): 627–33. http://dx.doi.org/10.22271/tpr.2020.v7.i3.078.

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Studies on the phytochemicals of the stem wood of tropical trees are scarce, despite its importance to plant protection and preservation as most researches focused on their leaves and fruits. This research work aimed to qualitatively and quantitatively analyze the phytochemicals present in the stem wood of Gmelina arborea, Tectona grandis and Anogeissus leiocarpus. Freshly sawn timbers were collected from a local sawmill and then grounded into finely powdered wood samples. The powdered wood samples and its extracts were screened for the presence or absence of phytochemicals using standard methodologies. The qualitative screening revealed the presence of various secondary metabolites such as tannin, saponin, steroids, flavonoid, alkaoids and terpene in all the three species. The result also showed that Tectona grandis had the highest percentage of Alkaloid (7.5%), Tannin (4.95%), and Flavonoid (4.67%) while Anogeissus leiocarpus had the highest percentage of Saponin (3.06%) and Terpene (1.45%). This study established the fact that the three selected species studied have potentials in the industries for medicinal and anti-pathogenic usages.
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Hassan, El Barbary, Emad M. El-Giar, and Philip Steele. "Evaluation of the antioxidant activities of different bio-oils and their phenolic distilled fractions for wood preservation." International Biodeterioration & Biodegradation 110 (May 2016): 121–28. http://dx.doi.org/10.1016/j.ibiod.2016.03.015.

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Mi, Xiaochen, Tieying Li, Jinping Wang, and Yongfeng Hu. "Evaluation of Salt-Induced Damage to Aged Wood of Historical Wooden Buildings." International Journal of Analytical Chemistry 2020 (August 1, 2020): 1–11. http://dx.doi.org/10.1155/2020/8873713.

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Salt is a common cause of damage to building materials used in cultural and historical buildings. The damage to aged wood in historical wooden buildings has not been extensively studied, resulting in the need for a more detailed analysis. In this work, Yingxian Wooden Pagoda, a typical historical wooden structure, was taken as the research object. Multichemical analyses were conducted to evaluate and understand the salt-induced damage to the aged wood using a scanning electron microscope equipped with an energy-dispersive X-ray spectrometer, sulphur K-edge X-ray absorption near-edge structure spectroscopy, X-ray fluorescence spectroscopy, X-ray powder diffraction, and attenuated total reflectance fourier transformed infrared spectroscopy. The results showed the presence of invasive salt crystallisations and ions in the aged samples. The source of these invasive elements was deduced by identifying the type, amount, and valency of the elements; they were found to be derived from environmental factors such as acid rain and atmospheric pollutant. The unique damage mechanism and route induced by salt in historical buildings made of wood were summarised; the damage was attributed to the accumulation of sulphate salt causing hydrolysis of the carbohydrates and salt crystallisation resulting in mechanical damage. This interdisciplinary study is significant for decision making in studies related to the preservation and evaluation of historical wooden buildings.
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