Relevant bibliographies by topics / SP Wood Technology

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  2. Dissertations / Theses
  3. Conference papers

Academic literature on the topic 'SP Wood Technology'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "SP Wood Technology"

1

de Azevedo, Leonardo Waisman, and Rita Scheel-Ybert. "Contributions to Proto-Jê Archaeology in the Southern Brazilian Highlands: Wood, Fire, and Landscape." Latin American Antiquity 31, no. 2 (April 20, 2020): 325–41. http://dx.doi.org/10.1017/laq.2020.1.

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The anthracological analyses of domestic and ceremonial contexts of proto-Jê archaeological sites in southern Brazil and Argentina have yielded data regarding landscape, fire technology, fuel economy, wood selection, and wood use from about 1200 to 250 years BP. The inhabitants of these sites built up the landscape that they occupied, actively constructing and experiencing their domestic and ceremonial places and possibly engaging in vegetation management practices. They gathered timber and firewood in the Araucaria Forest and in intensely modified areas covered by secondary vegetation. These practices likely included logging and gathering fallen deadwood. Our data indicate cultural selection of particular species. Inga sp., Jacaranda sp., and Araucaria angustifolia were probably selected because of the meaning of these woods in the cosmological dual system of proto-Jê societies. Bamboos and palm stems may have been used as kindling and for fire making. These results are an important contribution to our understanding of the proto-Jê occupation and the relationships that these groups maintained with their plant environment.
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Abdullahi, Jibril, and Jamila Bafa Saleh. "Rapid Biodiversity Evaluation of the Arboreal Termites in Kano University of Science and Technology, Wudil, Nigeria." BioScientific Review 2, no. 2 (June 12, 2020): 33–40. http://dx.doi.org/10.32350/bsr/2020/22/483.

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A rapid biodiversity evaluation of arboreal termite was carried out on the campus of Kano University of Science and Technology, Wudil. Three different trees which include Mangifera indica, Azadirachta indica and Khaya senegalensis were selected from three different sites (campus new site, premises of administrative offices and commercial area) on the campus and examined for termite activity, either arboreal nests or mud tubes which indicated infestation by the termites. Using a soft brush termite samples were collected into a labeled sampling bottle containing 10% formalin solution by cutting open the mud tubes and the nests with a forceps on the trees. A total of one hundred and twelve (112) individuals termites were samples were collected during the study belonging to five species: Coptotermes sp., Microtermes sp., Odontotermes sp., Amitermes sp. and Nutitermes sp. The Coptotermes sp. are the most abundant species both on the trees and the sites. Khaya senegalensis has the greatest diversity of the termite fauna as compared to other trees while campus new site (site A) also has greatest diversity. Coptotermes sp are insects of agricultural economic importance and feed on dead wood; therefore, they are insect pests of these trees and other building structures on the campus.
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Abdullahi, Jibril, and Jamila Bafa Saleh. "Rapid Biodiversity Evaluation of the Arboreal Termites in Kano University of Science and Technology, Wudil, Nigeria." BioScientific Review 2, no. 2 (June 12, 2020): 33–40. http://dx.doi.org/10.32350/bsr.0202.04.

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A rapid biodiversity evaluation of arboreal termite was carried out on the campus of Kano University of Science and Technology, Wudil. Three different trees which include Mangifera indica, Azadirachta indica and Khaya senegalensis were selected from three different sites (campus new site, premises of administrative offices and commercial area) on the campus and examined for termite activity, either arboreal nests or mud tubes which indicated infestation by the termites. Using a soft brush termite samples were collected into a labeled sampling bottle containing 10% formalin solution by cutting open the mud tubes and the nests with a forceps on the trees. A total of one hundred and twelve (112) individuals termites were samples were collected during the study belonging to five species: Coptotermes sp., Microtermes sp., Odontotermes sp., Amitermes sp. and Nutitermes sp. The Coptotermes sp. are the most abundant species both on the trees and the sites. Khaya senegalensis has the greatest diversity of the termite fauna as compared to other trees while campus new site (site A) also has greatest diversity. Coptotermes sp are insects of agricultural economic importance and feed on dead wood; therefore, they are insect pests of these trees and other building structures on the campus.
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4

BUTCARU, Ana C., Florin STĂNICĂ, and Sorina A. PETRA. "Influence of organic technology on vegetative growth and production of three climbing edible roses (Rosa sp.)." Notulae Botanicae Horti Agrobotanici Cluj-Napoca 48, no. 2 (June 30, 2020): 692–704. http://dx.doi.org/10.15835/nbha48211792.

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In the present study, three climbing edible roses (‘Crown Princess Margareta’, ‘Falstaff’ and ‘Brother Cadfael’) were evaluated for total vegetative growth and flowers production, besides correlations with soil microbiological and agrochemical parameters. The applied organic technology included a soil preparatory stage with three ameliorative plants (Sinapis alba L., Phacelia tanacetifolia L. and Tagetes patula L.) and two organic mulch variants (wood chips and wool) after plantation. In variant Sinapis and Tagetes, all three varieties of roses showed the highest values for parameters: total vegetative growth, number of shoots, average shoots length and flowers number. Significant positive correlations between biometric parameters and soil bacteria, phosphorus, mineral nitrogen, potassium (0-20 cm horizon) and humus (20-40 cm horizon) content were observed. Significant positive correlations between the number of flowers and the soil respiration coefficient, soil content in phosphorus, potassium, humus, total soluble salts and mineral nitrogen were noticed. Negative correlations with soil pH have been observed. Taking into account the data obtained in the two flowering stages in 2017, the average yield per hectare cultivated with ‘Crown Princess Margareta’ was 9.44 t petals/ha. For the ‘Falstaff’ and ‘Brother Cadafael’ cultivars, the yields were 7.54 and 5.62 t petals per hectare respectively.
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Mappapa, Indah Astieningsih, and Ahmad T. Yuliansyah. "Solid Biofuel Production from Meranti (Shorea Sp.) Sawdust Using Hydrothermal Treatment." Key Engineering Materials 789 (November 2018): 104–9. http://dx.doi.org/10.4028/www.scientific.net/kem.789.104.

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In the context of industrialization, wood industry plays an important role as one of thepillar components in building Indonesia industry where 76.36% is supported by Meranti (Shorea Sp.).However, the increase of wood processing industries produces waste biomass in the form of largeamount sawdust. Hydrothermal treatment is an environmentally clean technology of convertingbiomass into coal-like solid called hydrochar using subcritical water. The purpose of this research isto determine the effect of temperature and water to biomass (b/w) ratio in the formation of hydrocharfrom Meranti sawdust. This research was carried out using a 250 mL hydrothermal reactor where amixture of Meranti sawdust and water heated at temperature variation of 240 and 300oC; b/w ratio1:20, 2:20, 3:20; initial pressure of 1.0 Mpa and holding time for 30 minutes. Hydrochar were thencharacterized in terms of yield, caloric value, proximate and ultimate analysis. Based on experimentalresult, 39-78% raw materials were converted into hydrochar where the highest yield was found ontemperature operation of 240oC and b/w ratio 2:20.
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Mazloomi, Mohammad Sadegh, and Philip D. Evans. "Shape Optimization of a Wooden Baseball Bat Using Parametric Modeling and Genetic Algorithms." AI 2, no. 3 (August 22, 2021): 381–93. http://dx.doi.org/10.3390/ai2030024.

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Baseball is a popular and very lucrative bat-and-ball sport that uses a wooden bat to score runs. We hypothesize that new design features for baseball bats will emerge from their shape optimization using parametric modeling and genetic algorithms. We converge the location of two points on bats made from maple (Acer sp.) and ash (Fraxinus sp.) wood that are associated with increased velocity of a ball rebounding off a bat: vibrational nodal points and the center of percussion (COP). Our modeling and optimization approach was able to reduce the distance between the nodal points and COP from 166.0 mm to 52.1 mm. This change was similar in both wood species and resulted from changes to the geometry of the bat, specifically shifting of the mass of the bat toward the center of the barrel and removing mass from the very end of the barrel. We conclude that the combination of parametric finite element modeling and optimization using genetic algorithms is a powerful tool for exploring virtual designs for baseball bats that are based on performance criteria and suggest that our designs could be realized in practice using subtractive manufacturing technology.
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Haryanto, Agus, Wahyu Hidayat, Udin Hasanudin, Dewi Agustina Iryani, Sangdo Kim, Sihyun Lee, and Jiho Yoo. "Valorization of Indonesian Wood Wastes through Pyrolysis: A Review." Energies 14, no. 5 (March 4, 2021): 1407. http://dx.doi.org/10.3390/en14051407.

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The wood processing industry produces a significant amount of wood waste. Biomass valorization through pyrolysis has the potential to increase the added value of wood wastes. Pyrolysis is an important thermochemical process that can produce solid, liquid, and gas products. This paper aims to review the pyrolysis of wood wastes from Indonesia, including teak wood (Tectona grandis), meranti (Shorea sp.), sengon (Paraserianthes falcataria (L) Nielsen), and rubberwood (Hevea brasiliensis). The review is based on an in-depth study of reliable literatures, statistical data from government agencies, and direct field observations. The results showed that pyrolysis could be a suitable process to increase the added value of wood waste. Currently, slow pyrolysis is the most feasible for Indonesia, with the main product of charcoal. The efficiency of the slow pyrolysis process can be increased by harvesting also liquid and gaseous products. The use of the main product of pyrolysis in the form of charcoal needs to be developed and diversified. Charcoal is not only used for fuel purposes but also as a potential soil improvement agent.
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Moghaddam, Sasha Riahi, Sepideh Poormohamadi, Marziyeh Saffar, and Faezeh Esfahanipour. "The Influence of Biological Factors on the Health of Timber Structures on 11th to 14th Century AD in Yazd." Advanced Materials Research 778 (September 2013): 19–25. http://dx.doi.org/10.4028/www.scientific.net/amr.778.19.

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One of the main reasons for the decline and exhaustion of wood materials in old buildings is biological factors. In Yazd According to the position of buildings in hot and dry desert climate and the use of wood as an integral part of the building structure, This factors of damage to obvious and hidden that could threaten the stability of buildings. With respect to this, the several period laboratory and field research to identify the species and damage caused by biological agents work on timber structures Which mainly on 11 to 14 century AD buildings of Yazd damage has Was performed. In order to identify malicious insects, so far three type of Borer beetles the scientific name of the family Buprestidae Pseudocastalia aegyptiaca and Xylopertha reflexicauda and family Bostrichus capucinus Bostrychidae and three termite species with scientific names Anacanthotermes vagans (Hagen) family of Hodotermitidae, Amitermes sp. and Microcerotermes sp. The family Trmytyda has been identified in Yazd. The damage that these insects create many factors such as type of wood density, moisture content of wood depends on environmental conditions and location of the attack. According to climate of Yazd and construction technology, most of the structural damage, such as domes, arches and brick walls to show. These damages brought down the long-term structural strength and the instability in natural factors such as earthquakes, the structural imbalances and collapse of the buildings.Therefore the pathology of Integral component on timber structures brick in assessing the health and stability of structure in a desert climate of Yazd is very important and necessary. In this paper, by introducing the use of timber in 11th century to 14 century adobe structures in Yazd to review and evaluate the damage caused by the destruction timber structures Monuments By biological agents are paid.
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9

Matsunaga, H., M. Kiguchi, B. Roth, and P. D. Evans. "Visualisation of Metals in Pine Treated with Preservative Containing Copper and Iron Nanoparticles." IAWA Journal 29, no. 4 (2008): 387–96. http://dx.doi.org/10.1163/22941932-90000193.

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In this study we compared the ability of conventional and field-emission scanning-electron-microscopy (FESEM) and energy-dispersive analysis of X-rays (EDX) to visualise and map inorganic nano and microparticles in Southern pine (Pinus sp.) treated with an aqueous dispersion of micronised copper-carbonate and iron oxide. Conventional SEM-EDX was able to detect areas of the wood microstructure that contained higher concentrations of copper and iron, but EDX maps were affected by drift and specimens suffered beam damage. The high brightness of the FESEM's electron beam at low accelerating voltages reduced beam damage and helped when mapping the distribution of copper and iron particles. The clarity of EDX maps was further improved by using drift-correction software and by mapping low energy X-rays. FESEM-EDX was able to resolve individual copper and iron microparticles. We conclude that FESEM-EDX shows promise as a means of resolving and mapping the distribution of inorganic metal particles in wood and that this may lead to greater use of the technology as interest in the treatment of wood with inorganic nano and microparticles grows.
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10

Danielli, Dianessa, Marina Rates Pires, Elesandra da Silva Araujo, Mário Sérgio Lorenço, and Fábio Akira Mori. "Application of Myrcia splendens tannins in the composition of urea-formaldehyde adhesive for sustainable wood bonding." Research, Society and Development 10, no. 12 (September 24, 2021): e370101220543. http://dx.doi.org/10.33448/rsd-v10i12.20543.

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Tannins from Myrcia splendens from the Amazon rainforest were used for the first time in the formulation of a urea-tannin-formaldehyde (UTF) resin. The objective was to evaluate the effect of different tannin proportions on the glue line performance in Pinus sp. woods, glued with UTF adhesive. The tannins were extracted in a water bath, using 1500 mL of water and 100g of dry bark (liquor/bark 15:1), with addition of 3% Na2SO3, at a temperature of 70 °C for three hours. The adhesives formulations were based on the gradual replacement of mass of the urea-formaldehyde (UF) adhesive by tannin powder, totalizing four compositions and one control treatment. UTF adhesives were evaluated for their physicochemical properties, shear bond strength (wet and dry) and wood failure. The addition of M. splendens tannins to the urea formaldehyde adhesive promoted an increase in glue line strength. The proportion of 5.0% of tannins proved to be ideal in the formulation of the UTF adhesive, considering all the parameters evaluated. Thus, this study proves the potential use of Amazonian tannins from Myrcia splendens in the partial composition of more sustainable UTF adhesives.
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Dissertations / Theses on the topic "SP Wood Technology"

1

Wilinder, Per. "Fire Resistance in Cross-laminated Timber : Brandmotstånd hos korslaminerat massiv trä." Thesis, Jönköping University, JTH, Civil Engineering, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-11653.

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This report deals with the fire resistance of cross-laminated timber (CLT). Themain purpose is to verify a new model on CLT and its ability to sustain itsbearing capacity when exposed to fire. To establish this, a series of bendingtestshas been conducted in combination with fire exposure of the CLT. Twodifferent series, with different dimensions, of beams were tested (series 1 andseries 2). Four basic set-ups: CLT in tension or compression, either equippedwith fire protective covering or not. Results from the tests has been gatheredand evaluated to verify the theoretical model of the fire resistance. Evaluationwas made through analysis of the residual cross-sections of the beamsregarding charring depth and rate and moment of inertia (I).Results of the tests verify to a large extent the Design model. Externalproblems and variations in the beams themselves caused some deviations.Analysis confirmed the CLT as being more similar to other laminated productssuch as Laminated Veneer Lumber (LVL) then homogenous solid beams. BothCLT and LVL experience delamination when exposed to fire resulting in anincreased charring rate. The difference in rate when using Gypsum plaster as aprotective barrier against the fire exposure is also equal to LVL.The results of the report will be used in the new version of the EuropeanStandard, Euro Code 5 and in the third edition of Fire Safe Timber Buildings.Charring rates proved to be less than expected but the CLTs ability to withstandfire while keeping its bearing capacity

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Shange, Thembeka. "The English proficiency skills of Information and Communication Technologies (ICT) Foundation students at a University of Technology : assessing the effectiveness of the English Word Power program." 2016. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001915.

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D. Tech. Language Practice
Additional language learning in South Africa is a challenge, partly as a result of the country's past history which promoted certain languages in official domains, while others that were spoken by the majority of the citizens remained underdeveloped, and marginalised. As English is a language of learning and teaching at most universities in South Africa, students with a very poor command of English find it severely challenging when they enroll at university. This study assessed the possible, significant effectiveness of the English Word Power (EWP) program, which is used as a form of intervention on the poor English proficiency skills of ICT Foundation students at a University of Technology in Gauteng.
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Conference papers on the topic "SP Wood Technology"

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Risnasari, Iwan, Arif Nuryawan, and Novita Frianty Siallagan. "Characterization of Particleboard from Waste Tea Leaves (Camellia Sinensis L) and Meranti Wood (Shorea Sp) using Urea-Formaldehyde Adhesive and It’s Formaldehyde Emission." In International Conference on Natural Resources and Technology. SCITEPRESS - Science and Technology Publications, 2019. http://dx.doi.org/10.5220/0008552702610264.

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