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Journal articles on the topic 'Wood characteristic'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Sun, Peng, Zhi Xin Shang, Guo Sheng Gai, Cheng Bao Wu, and Yu Fen Yang. "Research on Pulverizing Characteristic of Woody Biomass by Cutting Mill." Advanced Materials Research 454 (January 2012): 261–67. http://dx.doi.org/10.4028/www.scientific.net/amr.454.261.

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To investigate the pulverizing characteristic of wood biomass, the dried woody chip with moisture content of 0wt % were chose as the raw material, cutting mill was used to pulverize the wood biomass at different feed rates, the particle sizes (characteristic particle size and average particle size), uniformity coefficient, density, aspect ratio of wood powder and the specific energy consumption were measured, the morphology of the woody particle was observed by SEM (Scanning Electron Microscope), the pulverizing mechanism was also discussed. The results indicate that the specific energy consum

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2

Hajad, Makbul, Sugeng Harianto, Joko Nugroho Wahyu Karyadi, et al. "Potential and Characteristic of Biomass Pellet from Tea Plantation Wastes as Renewable Energy Alternative." Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) 12, no. 3 (2023): 619. http://dx.doi.org/10.23960/jtep-l.v12i3.619-631.

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Tea plantation biomass wastes, such as tea plantation pruning, shade trees, and woody weeds have not been utilized. The waste can be used as renewable energy in the form of wood pellets. The problem is the feasibility of biomass waste to be used as material for making wood pellets as energy. This paper aims to analyze the potential of tea plantation biomass waste as wood pellet material to meet energy needs. The research was conducted in a tea plantation owned by the Tea and Kina Research Center (PPTK). Quantification of biomass waste potential per unit area was conducted in the plantation usi

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3

JHT, Admin. "VARIABILITAS SIFAT KIMIA KAYU BULAN DAN MAHANG BERDASARKAN ARAH AKSIAL." HUTAN TROPIKA 12, no. 1 (2019): 47–54. http://dx.doi.org/10.36873/jht.v12i1.39.

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ABSTRACT Wood of moon (Fagraea crenulata) and wood of mahang (Macaranga sp.) are not included the commercial timber species, therefore the knowledge regarding chemical properties of their woods are needed in order to provide information for various purposes according to their properties. The research was aimed to know chemical properties of moon wood and mahang wood. The research had been conducted at the laboratory of Forestry Department, University of Palangka Raya since February to March 2017. Research resultd showed that the solubility of moon and mahang woods in the cold water, hot water,

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Hendriyana, Hendriyana, and Yazid Hilman Maulana. "Identification of Types of Wood using Convolutional Neural Network with Mobilenet Architecture." Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) 4, no. 1 (2020): 70–76. http://dx.doi.org/10.29207/resti.v4i1.1445.

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Indonesia is a wood producing with large number of forest and various type of trees in less than 4000 species of trees in Indonesia’s forest. The activity of wood identification is effort to get information about kind of wood. The identification type of wood that have similar characteristics, it is difficult to identify the right type of wood. The characteristic can be allotted to two group, general characteristic and anatomy characteristic. General characteristics can be seen directly by the senses without tools, while anatomy characteristics can be seen with tools such as loupe or microscope

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Balfas, Jamal. "A NEW APPROACH TO OIL PALM WOOD UTILIZATION FOR WOODWORKING PRODUCTION (Part 2: Wood Modification with Organic Resin)." JOURNAL OF FORESTRY RESEARCH 5, no. 2 (2008): 115–24. https://doi.org/10.20886/ijfr.2008.5.2.115-124.

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The first stage of this study has demonstrated that oil plam wood has inferior characteristics in comparison with the conventional wood, and suggested to upgarade oil palm wood quality to increase its possible use for woodworking purposes. The use of organic resin (JRP-2) has been examined in this study for improving dimensional stability, strength and machining quality of the oil palm wood. Resin treatment was conducted by frying wood samples in a hot resin solution maintained at 60-80'C. The treated samples were then oven dried to reach 10% moisture content. After conditioning, wood samp

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6

Kim, Kwang Mo, and Jun Jae Lee. "NDE of Decayed Wood with Ultrasonic CT." Key Engineering Materials 321-323 (October 2006): 1182–85. http://dx.doi.org/10.4028/www.scientific.net/kem.321-323.1182.

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Recently, a new ultrasonic CT system has been developed as the NDE method suitable for wood. In this system, several characteristics related to the ultrasound traveling in the woods such as the anisotropy of woods, existence of immature woods and ultrasound diffraction in the woods are considered during image composition process. In this study, we inspected the system that had been newly developed for the decayed wood specimen. We performed the ultrasound measurements to reconstruct the CT image. And then, we verified the distributions of each characteristic in the section by measuring the moi

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7

Zain, Helwiyah. "PERILAKU BALOK KAYU MERANTI SEBAGAI BAHAN BANGUNAN UTAMA RUMAH TRADISIONAL ACEH." Jurnal Teknik Sipil Unaya 1, no. 1 (2015): 49–56. http://dx.doi.org/10.30601/jtsu.v1i1.6.

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The objective of this research is to get the behaviour of Meranti wood beams as a material of Aceh traditional building. The behaviour is to gain the relationship between load-deflection of wood beams test. Meranti woods are got from 6 locations of woods machinery i.e: 3 locations in the area Banda Aceh and other 3 lcations in Aceh Besar. The flexural test was used 5x7x120 cm wood beams size, and total 30 specimens.from those 6 locations. To get other supporting data, the other test was done i.e.: physical characteristic and mechanical characteristic. Physical characteristic was done with spec

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8

Owen, N. L., and D. W. Thomas. "Infrared Studies of “Hard” and “Soft” Woods." Applied Spectroscopy 43, no. 3 (1989): 451–55. http://dx.doi.org/10.1366/0003702894202760.

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FT-IR spectra of 24 different woods have been studied with the use of whole wood pieces and a diffuse reflectance accessory. Three absorptions have been identified, the positions or relative intensities of which are characteristic of the holocellulose/lignin ratio or of the type of lignin present in the wood. These spectral features serve as useful indicators to distinguish between “soft” or “hard” woods.

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9

Suri, Intan Fajar, Byantara Darsan Purusatama, Seung Hwan Lee, et al. "CHARACTERISTIC FEATURES OF THE OIL-HEAT TREATED WOODS FROM TROPICAL FAST GROWING WOOD SPECIES." WOOD RESEARCH 66(3) 2021 66, no. 3 (2021): 365–78. http://dx.doi.org/10.37763/wr.1336-4561/66.3.365378.

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This study aimed to evaluate the effect of oil-heat treatment on the anatomical, physical, and chemical properties of the tropical fast-growing wood species as gmelina (Gmelinaarborea) and mindi (Melia azedarach) wood. Vessel lumen area and diameter in radial and tangential direction of both species increased with increasing temperature. The fiber lumen areas in both woods were remarkably decreased by oil-heat treatment, and the fiber wall area increased considerably with increasing temperature. Both woods tended to gain weight after heat treatment at 180°C and 200°C, and then lose weight afte

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10

Jankowska, Agnieszka, Katarzyna Rybak, Malgorzata Nowacka, and Piotr Boruszewski. "Insight of Weathering Processes Based on Monitoring Surface Characteristic of Tropical Wood Species." Coatings 10, no. 9 (2020): 877. http://dx.doi.org/10.3390/coatings10090877.

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The main aim of the presented research was to compare the influence of selected ageing factors, such as UV radiation and complex artificial weathering methods, on the colour, wettability and roughness changes in garapa, tatajuba, courbaril and massaranduba from South America—tropical wood species that are popular for external usage in European countries. Both processes caused wood surfaces to become darker and turn to shades of brown. The highest total colour changes were shown in courbaril wood (wood with the highest extractives content). The wood surface roughness demonstrated variation, dep

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11

Yu, Shulan, Qun Zheng, Tianyue Chen, Hongli Zhang, and Xinran Chen. "Consumer personality traits vs. their preferences for the characteristics of wood furniture products." BioResources 18, no. 4 (2023): 7443–59. http://dx.doi.org/10.15376/biores.18.4.7443-7459.

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Individual personality traits are powerful determinants of behavior, and they can profoundly influence consumer decisions as a comprehensive understanding of consumer personality traits. Their role in decision-making can improve the predictability of consumer-related behavior. In this study, data on consumers’ preferences and personality traits were collected through questionnaires using the Wood Furniture Product Characteristics Consumer Preference Scale and the Big Five Personality Inventory Simplified. Bivariate correlation analysis and stepwise multiple regression analysis were used to inv

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12

Bera, Subir, and Manju Banerjee. "Similar Tree Ring pattern in the Gymnosperm woods from Late Permian of Antarctica and India." Journal of Palaeosciences 50, no. (1-3) (2001): 63–70. http://dx.doi.org/10.54991/jop.2001.1806.

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Tree rings revealed in a newly described gymnosperm wood Araucarioxylon ghoshii sp. nov. from Raniganj Formation, Raniganj Coal field, India are similar to the tree rings described in the in situ gymnosperm fossil woods from the Late Permian of Antarctica. The rings of the fossil woods from Antarctica and India have higher proportion of early woods compared to little amount of late wood. Characteristic zigzag pattern of early wood tracheids formed due to collapsing and crushing of tracheid files and false rings occur in the woods recorded from two distant areas. The characters suggest oc

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Nawawi, Deded Sarip, Takuya Akiyama, Wasrin Syafii та Yuji Matsumoto. "Characteristic of β-O-4 structures in different reaction wood lignins of Eusideroxylon zwageri T. et B. and four other woody species". Holzforschung 71, № 1 (2017): 11–20. http://dx.doi.org/10.1515/hf-2016-0100.

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Abstract Lignin analyses were performed on the reaction woods of five tropical wood species. The reaction woods of these five species and that of Gnetum gnemon L. (previously reported) were categorized into three types based on eccentric thickening growth and p-hydroxyphenyl/guaiacyl/syringyl (H/G/S) ratios: compression wood (CW) containing GH-lignin observed in gymnosperms (GH-lignin-CW), tension wood (TW) containing GS-lignin observed in angiosperms (GS-lignin-TW), and reaction wood that resembles CW and contains GS-lignin (GS-lignin-CW). GS-lignin-CW is an unusual type that was found in the

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14

Kang, Seog-Goo, and Hwa-Hyoung Lee. "Adsoprtion Characteristic of Fancy Veneer Overlaid Charcoal Board Composite." Journal of the Korean Wood Science and Technology 38, no. 5 (2010): 385–90. http://dx.doi.org/10.5658/wood.2010.38.5.385.

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15

Eskelson, Bianca N. I., Vicente J. Monleon, and Jeremy S. Fried. "A 6 year longitudinal study of post-fire woody carbon dynamics in California’s forests." Canadian Journal of Forest Research 46, no. 5 (2016): 610–20. http://dx.doi.org/10.1139/cjfr-2015-0375.

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We examined the dynamics of aboveground forest woody carbon pools — live trees, standing dead trees, and down wood — during the first 6 years following wildfire across a wide range of conditions, which are characteristic of California forest fires. From repeated measurements of the same plots, we estimated change in woody carbon pools as a function of crown fire severity as indicated by a post-fire index, years since fire, pre-fire woody carbon, forest type group (hardwood vs. softwood), elevation, and climate attributes. Our analysis relied on 130 U.S. national forest inventory plots measured

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16

Cao, Shubo, Shiyu Zhou, Jiying Liu, Xiaoping Liu, and Yucheng Zhou. "Wood classification study based on thermal physical parameters with intelligent method of artificial neural networks." BioResources 17, no. 1 (2022): 1187–204. http://dx.doi.org/10.15376/biores.17.1.1187-1204.

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In this study, 65 kinds of wood samples were classified by using artificial neural networks based on the measured value of wood thermal physical parameters. First, the thermal conductivities and the thermal diffusion coefficients of the wood samples were measured. The transient temperature rise curve of wood samples during the test process was recorded, and the characteristic values of the transient temperature rise curve were extracted by logarithmic curve fitting. The emissivity spectrum representing the thermal physical properties of wood surface was measured, and the characteristic spectra

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17

Susanto, Mudji, Prayitno Tibertius Agus, and Yoshitake Fujisawa. "WOOD GENETIC VARIATION OF Acacia auriculiformis AT WONOGIRI TRIAL IN INDONESIA." JOURNAL OF FORESTRY RESEARCH 5, no. 2 (2008): 135–46. https://doi.org/10.20886/ijfr.2008.5.2.135-146.

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       Provenace/progeny trial of Acacia auriculiformis plants growing at Wonogiri, Indonesia comprised of 129 half-sib families obtained from 12 provenances.The study used 3 years-old plants, beginning from seeadling. Parameters included growth traits(diameter,height,stem form and bark thickness), and wood characteristics(color,moisture content, and specific gravity). Genetic variations in the traits were studied and genetic parameters were estimated.         High variation among  the A. auriculiformis families within prove

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18

He, Xia, Guanmin Yang, and Xueming Yan. "The Research on Temperature Variation Characteristic of Wood during High-intensity Microwave Pretreatment." Academic Journal of Science and Technology 13, no. 1 (2024): 23–25. http://dx.doi.org/10.54097/zp02ac23.

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High-intensity microwave pretreatment (HIMP) is a kind of wood modification technology with great potential. In this study, a microwave (MW) treatment of plantation poplar (populous deltoids) wood was investigated by applying MW treatments with varying conditions, such as radiation power, irradiation time, and initial moisture content of the wood. The effect of microwave pretreatment conditions on internal temperature of wood was studied systematically. Results show that the temperature of wood increased with the microwave radiation intensity and the irradiation time. Excessive moisture conten

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19

Basri, Efrida, Nisrina Hanifah, Resa Martha, et al. "Effect of Citric Acid and Benzophenone Tetracarboxyclic Acid Treatments on Stability, Durability, and Surface Characteristic of Short Rotation Teak." Forests 13, no. 11 (2022): 1938. http://dx.doi.org/10.3390/f13111938.

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Short rotation teak (SRT) has a diameter of around 30 cm at the age of 15 years; however, the wood still has low quality, especially in dimensional stability and biological durability. The objective of this study was to improve dimensional stability and biological durability of SRT through modification treatment using non-biocide chemicals, citric acid (CA) and benzophenone tetracarboxylic acid (BPTCA). SRT sapwood was impregnated by 20% and 40% of CA or BPTCA followed by heating in the oven at 150 °C for 2 h. Dimensional stability, strength, surface characteristics and durability against term

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20

Wargadinata, Arijanto Salmoen. "PERANAN KAYU SEBAGAI MATERIAL PADA DESAIN PRODUK DAN DESAIN INTERIOR." Jurnal Dimensi Seni Rupa dan Desain 4, no. 2 (2007): 91–111. http://dx.doi.org/10.25105/dim.v4i2.1245.

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AbstractAs you know wood is natural material as acomposite material is usingfor construction building, interior need, household equipment and (Act; that's way we are talking about wood. We were descript ing woods for a tropical wood as tropical hard wood and tropical soft wood. The process production of it's are variaties, many of processes like's tradi timid processes and modern process style has been knew and now we are talking about the type of wood, the characteristic of wood and special properties of wood. I hope the discription above can opened mind of the product designer for looking mo

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21

Keith, C. T., and G. Chauret. "Basic wood properties of European larch from fast-growth plantations in eastern Canada." Canadian Journal of Forest Research 18, no. 10 (1988): 1325–31. http://dx.doi.org/10.1139/x88-204.

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A number of basic wood quality characteristics were evaluated in 10 European larch (Larixdecidua Mill.) trees, 5 from each of two rapidly growing plantations in eastern Ontario (approximately 30 years old) and western Quebec (approximately 25 years old). Characteristics evaluated included growth rate, relative density, fibre dimensions, longitudinal shrinkage, alcohol–benzene and water-soluble extractives, and Klason lignin. Radial and longitudinal patterns of variation in wood characteristics were examined and particular attention was given to the distribution of juvenile wood within the stem

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22

Kuzmenkov, Alexander, Oleg Galaktionov, Maxim Karpov, and Elena Emelianova. "Wood raw materials and wood waste use for the building materials production (on the example of the Republic of Karelia timber industry)." E3S Web of Conferences 458 (2023): 07025. http://dx.doi.org/10.1051/e3sconf/202345807025.

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The research is devoted to material resources analysis of the Republic of Karelia timber industry for the production of construction materials and to the optimal directions search for wood waste and illiquid wood use. The requirements for raw materials are analysed and inconsistencies in the classification of wood waste resources are revealed. Various methods of wood processing are considered and characteristic features and limitations on the applicability of raw materials in terms of size, quality, and breed characteristics are revealed. The conclusion is made about the main sphere of use of

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23

KIDOGUCHI, Kazuhiro, Kazuyoshi ICHIKAWA, Masami ASHIZAWA, and Masao KANAI. "4402 Carbonizing/Gasification Characteristic of Wood Biomass." Proceedings of the JSME annual meeting 2006.3 (2006): 111–12. http://dx.doi.org/10.1299/jsmemecjo.2006.3.0_111.

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24

Tian, Panpan, Jianhong Han, Shangjie Guo, Jun Di, and Xia Han. "Prediction Distribution Model of Moisture Content in Laminated Wood Components." Polymers 16, no. 11 (2024): 1453. http://dx.doi.org/10.3390/polym16111453.

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Shrinkage cracks are some of the most common defects in timber structures obtained from woods with an uneven distribution of moisture content and are subject to external dynamic environmental changes. To accurately predict the changes in the moisture content of wood components at any time and position, this study first applied the principles of food drying and established a moisture field model for laminated wood based on the analogy between heat and humidity transfer. A model for predicting the moisture content of wood that considers time and spatial distribution was then proposed. Second, by

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Esofita, Mufti, Mitra Djamal, Warsito P. Taruno, et al. "Analysis of Wood’s Capacitance Characteristic to its Hardness." Applied Mechanics and Materials 771 (July 2015): 161–64. http://dx.doi.org/10.4028/www.scientific.net/amm.771.161.

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A capacitance sensor has been designed to investigate the correlation between wood capacitance value, Janka hardness rating and density. The sensor was developed based on parallel plates using copper as the electrodes. Capacitance values were measured using CV-circuit, 20 Vp-p, 2.5 MHz. Five wood specimens from forest plantation that is Karet (Hevea brasiliensis), Pulai (Alstonia sp.), Pinus (Pinus mercusii), Sengon (Paraserianthes falcataria), and fast growing teak (Tectona grandis) were tested. Each specimen was measured in tangential and radial directions under 0% moisture content condition

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Liu, Yu-Chun, and An-Sheng Lee. "Application of Fuzzy Theory to the Investigation of Children’s Preference for Wooden Toy Materials—A Case Study of Rocking Horses." Sustainability 15, no. 8 (2023): 6356. http://dx.doi.org/10.3390/su15086356.

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This study aims to investigate the sensory preferences of children aged 8–12 regarding the material and characteristics of wooden toys. Taking wooden rocking horses as research samples, this study selected three types of wood, respectively Pinus taiwanensis, Fagus sylvatica, and Juglans nigra, which are significantly different in appearance from solid wood commonly used to make wooden toys. The experiment was conducted through on-site observation and questionnaire surveys to record children’s preferences for wood characteristics, such as the characteristic factors of wood texture, color and lu

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Pang, Sung-Jun, Jung-Kwon Oh, Chun-Young Park, Joo-Saeng Park, Mun-Jae Park, and Jun-Jae Lee. "Characteristic Evaluation of Bending Strength Distributions on Revised Korean Visual Grading Rule." Journal of the Korean Wood Science and Technology 39, no. 1 (2011): 1–7. http://dx.doi.org/10.5658/wood.2011.39.1.1.

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28

Zhuang, Zilong, Ying Liu, Fenglong Ding, and Zhengguang Wang. "Online Color Classification System of Solid Wood Flooring Based on Characteristic Features." Sensors 21, no. 2 (2021): 336. http://dx.doi.org/10.3390/s21020336.

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Solid wood flooring has good esthetic properties and is an excellent material for interior decoration. To meet the artistic effects of specific interior decoration requirements, the color of solid wood flooring needs to be coordinated. Thus, the color of the produced solid wood flooring needs to be sorted to meet the individual needs of customers. In this work, machine vision, deep learning methods, and ensemble learning methods are introduced to reduce the cost of manual sorting and improve production efficiency. The color CCD camera was used to collect 108 solid wood floors of three color gr

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Hu, Wengang, Yan Liu, and Shuang Li. "Characterizing Mode I Fracture Behaviors of Wood Using Compact Tension in Selected System Crack Propagation." Forests 12, no. 10 (2021): 1369. http://dx.doi.org/10.3390/f12101369.

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The fracture behaviors of four wood species commonly used in wood products were characterized when subjected to compact tension (CT) load in radial-longitudinal (RL) system crack propagation. Meanwhile, the failure modes of evaluated CT samples were compared and analyzed using the fractal dimension method. The results showed that wood species had a significant effect on fracture characteristic values, including maximum fracture load, critical stress intensity factor and fracture energy. These characteristic values changed in the same way, i.e., beech wood CT samples obtained the maximum charac

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30

Sivan, Pramod, Karumanchi S. Rao, and Kishore S. Rajput. "Chemical Composition in Juvenile and Mature Wood of Branch and Main Trunk of Leucaena leucocephala (Lam.) de Wit." Plants 12, no. 23 (2023): 3977. http://dx.doi.org/10.3390/plants12233977.

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Secondary growth is the most dynamic developmental aspect during the terrestrialization of plants. The development of secondary xylem tissue composed of thick-walled cells with characteristic changes in its structure and chemistry facilitates the growth and development of woody plants. In the present study, the chemical composition of the secondary xylem of juvenile and mature wood from the branch and main trunk of Leucaena leucocephala, has been investigated and the differences established. The biochemical analysis of different cell wall components in the mature wood of the main trunk reveale

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Delucis, Rafael De Avila, and Darci Alberto Gatto. "Flexural properties of four fast-growing eucalypts woods deteriorated by three different field tests." Acta Scientiarum. Technology 39, no. 1 (2017): 39. http://dx.doi.org/10.4025/actascitechnol.v39i1.27067.

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Durability is a wood characteristic determined by several factors, making it difficult to investigate the service life of pieces designated for outdoor use. In this study, the decaying of juvenile and adult woods of four fast-growing eucalypts from southern Brazil subjected to three different exposure environments was monitored through mechanical properties (flexural test). The study material was obtained from adult trees of Eucalyptus botryoides, Corymbia citriodora, Eucalyptus paniculata and Eucalyptus tereticornis. Field tests were conducted in the city of Piratini, southern Brazil, and sam

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Skakic, Dusan, Igor Dzincic, Biserka Nestorovic, and Tanja Palija. "Influence of different joints on quality of dining chairs." Bulletin of the Faculty of Forestry, no. 97 (2008): 235–47. http://dx.doi.org/10.2298/gsf0897235s.

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Products quality presents one of the main causes of every contemporary organized production, which includes it, in group of basic exit characteristics. According to national standard, quality mark is based on testing of its quality characteristics. A characteristic of quality has been divided into four groups of demands: functionality (functional dimensions and stability tests), rigidity, surface rigidity, quality of materials and work piece accuracy. Dining chair has been investigated by use of different wood joints, and some remarks on construction has been given. Two groups of investigated

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Zhang, S. Y., G. Nepveu, and R. Eyono Owoundi. "Intratree and intertree variation in selected wood quality characteristics of European oak (Quercuspetraea and Quercusrobur)." Canadian Journal of Forest Research 24, no. 9 (1994): 1818–23. http://dx.doi.org/10.1139/x94-235.

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Twenty-three trees of European oak (Quercuspetraea (Matt) Liebl. and Quercusrobur L.) were collected from northeastern France to study intratree and intertree variation in the following characteristics: (i) wood density as well as earlywood density and latewood density; (ii) various types of wood shrinkage; and (iii) ring width and its components. Both intratree variation and intertree variation in the three characteristics are significant, but intertree variation is generally smaller. However, the relative magnitude of intertree variation varies with characteristic: intertree variation accoun

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TALLUR, PREETI N., VINAYAK M. NAIK, PRAGASAM ANTONY, and VIPUL V. NAIK. "Characteristic evaluation of adsorption efficiency of activated wood charcoals in adsorbing acetic acid." Journal of Ultra Chemistry 16, no. 6 (2020): 83–93. http://dx.doi.org/10.22147/juc/160602.

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Activated wood charcoal (Carbonized) acts as an excellent adsorbent and it finds wide applications. The present study was carried on four different activated wood charcoals Salix (Sac), Pinus (Pac), Anacardium occidentale (AOac) and Calophyllum inophyllum (CIac) found in Karwar district, Karnataka, India. The activated charcoal was prepared by carbonizing in a muffle-furnace at 800 0 C and the yield of carbonized carbon was about 50%. SEM morphology and EDX spectrum indicates the homogeneity and purity of the activated wood charcoals containing 65-86% carbon to that of commercial charcoal (89%

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YUNIANTI, ANDI DETTI, KIDUNG TIRTAYASA PUTRA PANGESTU, S. SUHASMAN, et al. "COLOR IMPROVEMENT OF PRETREATED GMELINA WOOD BY IMPREGNATION OF NATURAL DYES." WOOD RESEARCH 68(4) 2023 68, no. 4 (2023): 627–37. http://dx.doi.org/10.37763/wr.1336-4561/68.4.627637.

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The purpose of this research was to improve the appearance of pretreated gmelina wood (Gmelina arborea) by coloring with a natural dye. The dyes used in this research were obtained from sappan (Caesalpinia sappan) and tegeran (Cudrania javanensis) wood waste with a size of 20-40 mesh. The anatomical characteristic that determined the permeability of the gmelina wood was investigated referring to International Anatomist Wood Association (IAWA), while the characteristic of the dye was analyzed using X-ray diffraction (XRD). The wood was colored by immersing in dye mixture (ratio dye and water of

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Cai, Chenyang, and Fanding Zhou. "Sorption Characteristic of Thermally Modified Wood at Varying Relative Humidity." Forests 13, no. 10 (2022): 1687. http://dx.doi.org/10.3390/f13101687.

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Thermal modification (TM) is commonly used for improving the performance of wood under varying environmental conditions. The effect of TM on the hygroscopic properties of wood has been studied extensively; however, the sorption mechanism and the states of water of thermally modified wood (TMW) at varying relative humidity (RH) is limited. In this work, Douglas fir was modified at 180 °C, 200 °C and 220 °C for a duration of 2 h and the Hailwood–Horrobin model and NMR relaxometry were used after specimens were conditioned at eight different RHs. The results showed that TM inhibited monolayer and

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Ouden, J. den, U. G. W. Sass-Klaassen, and P. Copini. "Dendrogeomorphology – a new tool to study drift-sand dynamics." Netherlands Journal of Geosciences - Geologie en Mijnbouw 86, no. 4 (2007): 355–63. http://dx.doi.org/10.1017/s001677460002357x.

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AbstractA dendrogeomorphological approach is presented, using wood characteristics of native oak(Quercus roburL.) to infer dynamics of aeolian sediment transport in drift-sand areas. Wood samples, taken from oaks in two drift-sand areas, were analysed to study changes in tree-ring pattern and wood anatomy as a consequence of burying or exposure from drift sand.In all cases, the wood of the sampled oaks showed sudden changes in anatomy and tree-ring width due to burial by drift sand or subsequent exposure after erosion of the new soil surface. After aerial stems became covered by drift sand, th

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Krisdianto, Krisdianto. "COLOR DIFFERENCES OF PINE AND EUCALYPT WOODS MEASURED BY MICROFLASH-200®." JOURNAL OF FORESTRY 4, no. 2 (2007): 83–91. https://doi.org/10.20886/ijfr.2007.4.2.83-91.

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It is not easy to define color because it refers to psychological response of human. As a result, perception of color achieved by people is relatively different.  Wood color plays an important role in timber processing and it is an important consideration in wood identification. Each wood species has specific color and it becomes the species characteristic. Colors in wood are highly variable and unique features. Characteristics of wood color are influenced by extractive materials and moisture contents present on it. A standard of color measurement has been developed and it is called CIE m

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Wang, Jie, Liping Ning, Qi Gao, Shiye Zhang, and Quan Chen. "The identification and characteristics of Phoebe zhennan buried wood." IAWA Journal 40, no. 4 (2019): 804–19. http://dx.doi.org/10.1163/22941932-40190249.

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ABSTRACT The subject of this study is the structure and composition of buried Phoebe zhennan wood. Through comparative studies of the anatomy and composition with modern undegraded wood, the objective was to understand any changes that have taken place in the P. zhennan buried wood samples. The P. zhennan buried wood can be identified by wood structure characteristics and volatile components analysis. It is required that the microstructural features are identical to those of modern P. zhennan wood; simultaneously, the volatile components of the wood must contain six characteristic compounds wi

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R. Safin, R., G. F. Ilalova, and R. R. Hasanshin. "Improving the Performance of Decking Board for Use in Landscape Design." International Journal of Engineering & Technology 7, no. 4.36 (2018): 1027. http://dx.doi.org/10.14419/ijet.v7i4.36.24945.

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In recent years improving the efficiency of wood use is gaining ever-increasing relevance both in Russia and abroad. In issues related to the thermal modification of the properties of wood the increased interest of scientific community can be observed. Heat treatment causes a change in the physical properties and chemical composition of wood raw materials, which subsequently contributes to improvement of the performance characteristics of composite materials and the production efficiency of chemical products from thermally modified shredded wood. The purpose of developing this technology is to

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Li, Jingkui, Ruoying Wang, He Tian, Yanan Wang, and Dawei Qi. "Research on the Gradual Process of the Metallization Structures and Mechanical Properties of Wood Veneer." Symmetry 10, no. 11 (2018): 550. http://dx.doi.org/10.3390/sym10110550.

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In order to improve the mechanical properties of the wood surface and explore the mechanical effect of wood veneer surface metallization, the 31-year-old Pinus sylvestris is taken as the research object and Cu is deposited on the wood surface by magnetron sputtering to achieve wood veneer metallization. Based on X-ray diffraction (XRD) and nanoindentation, a research on the gradual process of the structures and mechanical properties of wood veneer metallization was carried out. The results indicate that wood veneer metallization does not affect the crystallization zone of wood, there are still

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42

Siahaan, Herianto, and Imam Wahyudi. "Keragaan Permesinan dan Keteguhan Rekat Kayu Jati Cepat Tumbuh Terdensifikasi." Jurnal Ilmu Pertanian Indonesia 26, no. 1 (2020): 1–7. http://dx.doi.org/10.18343/jipi.26.1.1.

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The objective of this study was to analyze machining performance (characteristic and quality), as well as bonding quality of densified wood, and then compared to those of un-treated (control) wood and boron-treated wood. Characteristic and quality of machining properties were directly evaluated by qualified technician during processing, while bonding quality was evaluated through its shear strength. The results showed that densification employed was able to improve machining performance and bonding quality of the 5-year-old faster-grown teakwood. Compared to control wood and boron-treated wood

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Husnul Khatimi and Yuslena Sari. "PREDIKSI KUALITAS HASIL HUTAN LAHAN BASAH MENGGUNAKAN BACKPROPAGATION." Jurnal Teknologi Informasi Universitas Lambung Mangkurat (JTIULM) 1, no. 1 (2016): 34–42. http://dx.doi.org/10.20527/jtiulm.v1i1.6.

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Many forests are wetlands plant palm or tribe (family) Arecaceae. One type is the coconut (Cocos nucifera) is often utilized all its parts including stem used for wood materials, the process of selecting coconut wood are used as ingredients of a product made by a grader trained by observing the wood directly without using tools (manual). The method of causing dependence expertise and experience in the selection of a grader coconut wood. With the limitations of a grader, then arises a problem when a large number of coconut wood objects tested manually exceeds the capacity of a grader. Therefore

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Dyer, Stephanie T. "Wood Fluorescence of Indigenous South African Trees." IAWA Journal 9, no. 1 (1988): 75–87. http://dx.doi.org/10.1163/22941932-90000472.

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The fluorescence characteristics of South African hardwoods and their extracts were studied to determine their value in wood identification. Heartwood specimens and water and ethanol extracts of a1together 179 species representing 108 genera and 46 farnilies were exarnined in longwave ultraviolet light. Additional tests were conducted for the presence of Aluminium natural saponins. The findings of this research correspond with the current knowledge on wood fluorescence. The families Leguminosae, Rutaceae and Anacardiaceae showed positive fluorescence for the majority of their species. Platylop

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Christoforo, André L., Andrea de S. Almeida, Tamiris L. S. Lanini, Rodrigo de S. Nogueira, and Francisco A. R. Lahr. "ESTIMATION OF THE CHARACTERISTIC VALUE OF WOOD STRENGTH." Engenharia Agrícola 39, no. 1 (2019): 127–32. http://dx.doi.org/10.1590/1809-4430-eng.agric.v39n1p127-132/2019.

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Ockajova, Alena, Adrian Banski, and Tomasz Rogoziński. "Tilt Angle of Wood Dust." Annals of WULS, Forestry and Wood Technology 121 (March 29, 2023): 37–42. http://dx.doi.org/10.5604/01.3001.0053.8589.

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Tilt Angle of Wood Dust. The aim of this article is to point out a risk factor – wood dust, which settles on various structures, inclined surfaces in operation and, if not regularly cleaned, it is a source of secondary dust, because it is swirled up again with any movement. By measuring the tilt angle of bulk wood material obtained from sawing on a table circular saw, using different saw blades and wood dust from longitudinal and transverse sanding on a hand belt sander, we determined which characteristics affect it. We found that the size of the particles is an important characteristic, the l

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Blokhina, Nadezhda I., Olesya V. Bondarenko, and Sergey V. Osipov. "Age Variation of Wood Anatomical Characteristics in Larix cajanderi Tree." Wood Research Journal 2, no. 1 (2017): 1–12. http://dx.doi.org/10.51850/wrj.2011.2.1.1-12.

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The paper is the first results of the study of age variation of wood anatomy in Larix cajanderi Mayr (Pinaceae). The anatomical study was made from one L. cajanderi tree grown in the optimal habitat for L. cajanderi within areal of this species. Age variability of anatomical characteristics in the direction from pith to bark and along the height of stem is described in detail. Mature wood in L. cajanderi is formed in the base of stem and at breast height in the growth rings numbers 31~40 inclusively, and in the middle of stem in the growth rings numbers 41~50 inclusively. Characteristic featur

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Balfas, Jamal. "NEW APPROACH TO OIL PALM WOOD UTILIZATION FOR WOODWORKING PRODUCTION Part 1: Basic Properties." JOURNAL OF FORESTRY RESEARCH 3, no. 1 (2006): 55–65. https://doi.org/10.20886/ijfr.2006.3.1.55-65.

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An explosive development in oil palm plantations in the country has produced a consequence in the generation of  plantation wastes. The  disposal of these wastes  has created  an  enormous environmental problem that some practical solution to their economic utilization has to  be sought.  A series of experiments have been accomplished to observe the possibility of converting the oil palm stem into valuable woodworking products. The  first stage of  this effort was determining basic characteristics of oil palm wood.  Results in general showed th

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Trautenmüller, Jonathan William, Juliane Borella, Rafaelo Balbinot, et al. "Longitudinal variation of wood basic density of Inga marginata and Chrysophyllum gonocarpum." Advances in Forestry Science 3, no. 3 (2016): 45–49. https://doi.org/10.34062/afs.v3i3.3609.

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The wood basic density is one of the main physical properties of wood and is correlated with several other characteristics of this material. Thus, this study aimed to evaluate the longitudinal variation of wood basic density of Inga marginata Willd. and of Chrysophyllum gonocarpum (Mart. & Eichler) Engl. The three trees of each species were shown in a fragment Seasonal Deciduous Forest Alluvial and, after cutting, were measured and cubed by the Smalian’s method. For the determination of wood basic density, discs were removed in positions the 0.1 m of the base, 25, 50, 75 e 100% of the comm

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Wang, Sidong, Dongsheng Chen, Jiangyi Chu, and Jinghui Jiang. "Effect of Growth Ring Width and Latewood Content on Selected Physical and Mechanical Properties of Plantation Japanese Larch Wood." Forests 13, no. 5 (2022): 797. http://dx.doi.org/10.3390/f13050797.

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In order to evaluate the physical and mechanical properties of plantation Japanese larch wood, various physical and mechanical indicators were measured with reference to Chinese national standards. The characteristics of the growth ring on the end face of wood samples were captured, with the mean latewood percentage being 21.4% and the mean ring width being 3.24 mm. Relationships between growth ring characteristics, latewood percentages, and the physical and mechanical properties of the plantation Japanese larch wood were investigated. The results revealed that it is most appropriate to use gr

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