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Relevant bibliographies by topics / Natural resins

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Academic literature on the topic 'Natural resins'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2025

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Journal articles on the topic "Natural resins"

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Gigante, Bárbara. "Natural resins." Conservar Património 1 (2005): 33–46. http://dx.doi.org/10.14568/cp1_4.

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Seyfullah, Leyla J., Emily A. Roberts, Phillip E. Jardine, and Alexander R. Schmidt. "Experimental induction of resins as a tool to understand variability in ambers." Fossil Record 24, no. 2 (2021): 321–37. http://dx.doi.org/10.5194/fr-24-321-2021.

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Abstract. Amber is chiefly known as a preservational medium of biological inclusions, but it is itself a chemofossil, comprised of fossilised plant resin. The chemistry of today's resins has been long investigated as a means of understanding the botanical sources of ambers. However, little is known about the chemical variability of resins and consequently about that of the ambers that are derived from particular resins. We undertook experimental resin production in Araucariacean plants to clarify how much natural resin variability is present in two species, Agathis australis and Wollemia nobil

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Gören, Ahmet C., Gökhan Bilsel, Alp Hakan Öztürk, and Gulaçtı Topçu. "Chemical Composition of Natural Colophony from Pinus Brutia and Comparison with Synthetic Colophony." Natural Product Communications 5, no. 11 (2010): 1934578X1000501. http://dx.doi.org/10.1177/1934578x1000501105.

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The compositions of colophony resins obtained from Pinus brutia Ten trees by three different methods (acid paste, carved hole and scraping) from Ayvacık, Gökova and Kemalpaşa in Turkey were analyzed by capillary GC-MS. The main components were the monoterpenes α-pinene, β-pinene, and Δ3-carene, and the diterpenic resin acids palustric, abietic, kaur-9(11)-16-en-18-oic and neoabietic acid. The synthetic colophony resins exhibited similar contents to those of the natural resins obtained from the Gökova and Kemalpaşa regions of Turkey. However, colophony resins from Ayvacık exhibited only half th

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Seyfullah, Leyla J., Emily A. Roberts, Phillip E. Jardine, Jouko Rikkinen, and Alexander R. Schmidt. "Uncovering the natural variability of araucariacean exudates from ex situ and in situ tree populations in New Caledonia using FTIR spectroscopy." PeerJ Analytical Chemistry 4 (May 25, 2022): e17. http://dx.doi.org/10.7717/peerj-achem.17.

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Background Understanding the natural variability of plant resins is crucial for evaluating the chemical information stored in ambers that may support inferring palaeoenvironmental conditions. However, even among extant resin-producing plants, the variation of resinous exudates within and between tree genera and species is still poorly understood. Methods We analysed plant exudates from across the Araucariaceae in New Caledonia using Fourier-transform infrared spectroscopy in attenuated total reflection mode (FTIR-ATR). Both, wild (in situ) and arboretum grown (ex situ) populations were used to

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Prasad, Niranjan, Kulwant Sharma, J. Tiwari, Rajeev Gupta, and Moni Thomas. "Mechanization of Natural Gum and Resin Tapping." Journal of Non-Timber Forest Products 19, no. 4 (2012): 279–89. http://dx.doi.org/10.54207/bsmps2000-2012-a5u0a9.

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Indonesia, India and China are among the world’s major producers of gums and resins. India is the leading producer of lac, Guar Gum and Gum Karaya. Gum and resin are important minor forest produce and are a source of livelihood for tribals residing in forest, sub-forest, desert and mountain areas. Some state governments have banned the tapping of resins and gums as the method for tapping are destructive in nature. To give proper attention to these important export oriented minor forest products, ICAR has approved a Network Project on Harvesting, Processing and Value Addition of Natural Resins

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Ünügül, Tuba, Metin Erenkaya, and Bağdagül Karaağaç. "Use of Liquidambar Orientalis Mills in natural rubber compounds as an alternative to synthetic resins." Journal of Elastomers & Plastics 54, no. 5 (2022): 778–99. http://dx.doi.org/10.1177/00952443221089048.

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Phenolic resins are useful additives that provide various functions for rubber compounds during compounding and vulcanization, as well as after cure. Natural resins are considered as strong alternatives to synthetic ones due to environmental concern. Liquidambar Orientalis Mills is an endemic plant and grows in many different geographies including Turkey. In this study, the phenolic resin obtained from Liquidambar Orientalis Mills has been studied regarding its functions in a generic natural rubber compound. It was incorporated into the rubber compound with and without selected gum and phenoli

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Li, Taotao, Zhiyuan Hu, Zhanjun Liu, and Cheng Li. "Development and Characterization of a Novel Environmentally Friendly Larch-Tannin-Modified Phenol–Formaldehyde Resin for Plywood Manufacturing." Forests 15, no. 12 (2024): 2155. https://doi.org/10.3390/f15122155.

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Larch tannin, a valuable forest product resource, offers the benefits of being natural, renewable and environmentally friendly. With growing environmental concerns, the widespread use of phenolic resins in the wood industry has been limited due to the depletion of fossil resources and formaldehyde emission issues. In this study, larch tannin was modified using a NaOH/urea solution to enhance phenolic resin properties. The curing properties and thermal stability of the adhesives were analyzed using a differential scanning calorimeter (DSC) and thermogravimetric analysis (TGA), and the formaldeh

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Ben, Issa, Aleksandar Marinkovic, and Ljubinka Rajakovic. "Separation and determination of dimethylarsenate in natural waters." Journal of the Serbian Chemical Society 77, no. 6 (2012): 775–88. http://dx.doi.org/10.2298/jsc110510010b.

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A simple and efficient method for separation and determination of dimethylarsenate DMAs(V) was developed in this work. Two resins, a strong base anion exchange (SBAE) resin and iron-oxide coated hybrid (HY) resin were tested. By simple adjusting pH value of water at 7.00, DMAs(V) passed through the HY column without any changes, while all other arsenic species [inorganic arsenic and monomethylarsonate, MMAs(V)] were quantitatively bonded on HY resin. The resin capacity was calculated according to the breakthrough points in a fixed bed flow system. At pH 7.00 the HY resins bonded more than 4150

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Madueke, C. I., R. Umunakwe, and O. M. Mbah. "A review on the factors affecting the properties of natural fibre polymer composites." Nigerian Journal of Technology 41, no. 1 (2022): 55–64. http://dx.doi.org/10.4314/njt.v41i1.9.

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Improved quality natural fibre composites cannot be achieved without considering certain factors such as the degree of uniformity of the fibre, wettability of the fibre, fibre length, fibre volume fraction, type of matrix, interfacial bond strength, fibre orientation, compatibility of the fibre with the resin, processing parameters and manufacturing techniques among others. Their influences on the properties of the composites with typical examples from previous works were highlighted. The exact or approximate volume fractions of specific fibres in specific resins for optimal performance in com

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Pierigé, Michele, Francesca Nardelli, Lucia Calucci, et al. "Exploring the Effect of Resins of Different Origin on the Structure, Dynamics and Curing Characteristics of SBR Compounds." Polymers 16, no. 6 (2024): 834. http://dx.doi.org/10.3390/polym16060834.

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The replacement of synthetic and petroleum-based ingredients with greener alternatives of natural origin is an imperative issue in rubber technology for the tire industry. In this study, a glycerin-esterified maleated rosin resin, derived from natural resources, is examined as a potential tackifier in styrene–butadiene rubber (SBR) formulations. A comparison is made with two synthetic resins commonly used as tackifiers in tire manufacturing: a petroleum-derived aromatic resin and a phenolic resin. Specifically, this research investigates how these resins affect the structure, dynamics, and cur

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Dissertations / Theses on the topic "Natural resins"

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Santos, Renivaldo José dos [UNESP]. "Obtenção de compósitos de borracha natural com resíduo industrial de couro reticulados com diferentes peróxidos." Universidade Estadual Paulista (UNESP), 2014. http://hdl.handle.net/11449/115765.

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Made available in DSpace on 2015-03-03T11:52:32Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-07-11Bitstream added on 2015-03-03T12:06:32Z : No. of bitstreams: 1 000806595.pdf: 10245313 bytes, checksum: 4bef075a90da60920b590ab23fab6051 (MD5)<br>Processos de curtimento de couro têm causado impacto ambiental como resultado da geração de resíduo sólido, resíduos provenientes do processo de lavagem do couro (waterwaste) bem como a liberação de gases durante os procedimentos. O descarte inapropriado deste resíduo pode promover, por exemplo, a oxidação do cromo, passando de Cr III para Cr

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Santos, Renivaldo José dos. "Obtenção de compósitos de borracha natural com resíduo industrial de couro reticulados com diferentes peróxidos /." Presidente Prudente, 2014. http://hdl.handle.net/11449/115765.

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Orientador: Aldo Eloizo Job<br>Banca: José Antonio Malmonge<br>Banca: Ana Maria Pires<br>Banca: Eduardo Ribeiro de Azevedo<br>Banca: Maria Alice Martins<br>Resumo: Processos de curtimento de couro têm causado impacto ambiental como resultado da geração de resíduo sólido, resíduos provenientes do processo de lavagem do couro (waterwaste) bem como a liberação de gases durante os procedimentos. O descarte inapropriado deste resíduo pode promover, por exemplo, a oxidação do cromo, passando de Cr III para Cr IV, tornando-se extremamente tóxico. Além disso, o descarte apropriado do resíduo (principa

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Rahmani, Sonia. "The removal mechanism of natural organic matter by ion exchange resins from thermodynamic perspectives." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/62566.

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Natural organic matter (NOM), a constituent in surface drinking water sources, requires removal to minimize its negative impacts on water quality and water treatment processes. Ion exchange (IEX) has been considered as an effective technology for the removal of NOM. However, despite many studies on the IEX removal of NOM, the removal mechanism and the molecular interactions involved in the IEX process are quite unknown due to the complexity of the NOM molecular structure. This research aimed to investigate the NOM removal with a focus on fundamentals underpinning the IEX process and the mole

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Santos, Daniela Micheline dos [UNESP]. "Influência do intemperismo natural ou induzido sobre a estabilidade cromática de próteses faciais, em função do material de confecção e da pigmentação." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/97369.

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Made available in DSpace on 2014-06-11T19:28:57Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-01-21Bitstream added on 2014-06-13T19:58:22Z : No. of bitstreams: 1 santos_dm_me_araca.pdf: 1205156 bytes, checksum: fffe6214d9a798b0c0b924994c235e30 (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>O maior problema enfrentado pelo protesista bucomaxilofacial é reproduzir a cor exata da pele do paciente, proporcionando uma estética agradável. Para alcançar este objetivo, o profissional deve ter materiais que possibilitem uma fácil caracterização, mantendo por um lon

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Bazri, Mohammad Mahdi. "Kinetics and fate of natural organic matter under different water matrices using strong basic ion exchange resins." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/57229.

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This research has investigated the factors influencing the kinetics and efficacy of natural organic matter (NOM) removal during the anionic ion exchange process (IEX). A holistic approach was undertaken to evaluate various IEX resins in terms of their NOM removal kinetics and regeneration efficiency under batch and consecutive multiple loading cycles. Initial screenings indicated the strongly basic resin as a better candidate for NOM removal, and hence it was employed for subsequent experiments. Different treatment parameters (resin dose, contact time, NOM source) were tested and detailed kin

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Rhourri-Frih, Boutayna. "Analyse, classification et caractérisation de résines d'origine végétale par chromatographie et spectrométrie de masse." Thesis, Orléans, 2009. http://www.theses.fr/2009ORLE2054/document.

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L’analyse et la classification de 31 résines végétales par différentes méthodes analytiques (HPTLC, CPL-UV, CPL-DEDL, CPL-SM, CPG-SM et RMN) a été réalisée dans un but d’établir un lien de parenté entre l’identité chimique d’une résine et son appartenance botanique. Les résines naturelles étant riches en dérivés triterpéniques une étude de leur détection par spectrométrie de masse (SM) a été menée montrant l’intérêt de l’ionisation douce pour cette famille moléculaire et l’avantage des sources APCI et APPI pour une détection sensible en LC-MS e ces composés. Ces métabolites secondaires peu pol

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Kukadia, Umesh. "ROOM TEMPERATURE CURING OF BIO-BASED RESINS AND PREPARATION OF THEIR COMPOSITES." Thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-19028.

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In today’s world the significance of bio-based materials are increasing rapidly because ofthe environmental concern. Material scientists are nowadays engaged in development ofsuch materials which have natural origin and degrade in its environment. Several workshave already been reported in area of thermoplastic biocomposites. However biocompositesbased on thermosets is comparatively new area of research. In this work biobasedcomposites have been developed from two different bio-based thermoset resins.The main objective of the work was room temperature curing of poly lactic acid basedresin (POL

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Zhang, Yongcheng. "Part I. Natural fiber / thermoplastic composites Part II. Studies of organo-clay synthesis and clay intercalation by epoxy resins /." Diss., Mississippi State : Mississippi State University, 2008. http://library.msstate.edu/etd/show.asp?etd=etd-11032008-094748.

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Silveira, Valdelice Rodrigues da. "Estudo do desempenho de resinas polim?ricas para remo??o de H2S do g?s natural." Universidade Federal do Rio Grande do Norte, 2007. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17774.

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Made available in DSpace on 2014-12-17T15:42:26Z (GMT). No. of bitstreams: 1 ValdeliceRS.pdf: 981957 bytes, checksum: cedb4f2ae440069c889ba97e29744a20 (MD5) Previous issue date: 2007-07-11<br>The natural gas (NG) is a clean energy source and found in the underground of porous rocks, associated or not to oil. Its basic composition includes methane, ethane, propane and other components, like carbon dioxide, nitrogen, hydrogen sulphide and water. H2S is one of the natural pollutants of the natural gas. It is considered critical concerning corrosion. Its presence depends on origin, as well as

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Silveira, Valdelice Rodrigues da. "Estudo do desempenho de resinas polim?ricas para remo??o de H2S do g?s natural." Universidade Federal do Rio Grande do Norte, 2006. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17780.

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Made available in DSpace on 2014-12-17T15:42:27Z (GMT). No. of bitstreams: 1 ValdeliceRS.pdf: 629576 bytes, checksum: 6bcf4a0b805ce82618289068cfb23b77 (MD5) Previous issue date: 2006-07-11<br>The natural gas (NG) is a clean energy source and found in the underground of porous rocks, associated or not to oil. Its basic composition includes methane, ethane, propane and other components, like carbon dioxide, nitrogen, hydrogen sulphide and water. H2S is one of the natural pollutants of the natural gas. It is considered critical concerning corrosion. Its presence depends on origin, as well as

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Books on the topic "Natural resins"

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Schlechter, Melvin. Composites: Resins, fillers, reinforcements, natural fibers and nanocomposites. Business Communications Co., 2002.

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Rezaifard, Amir H. Toughening of epoxy resin by polymethylmethacrylate-grafted-natural rubbers. Brunel University, 1990.

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Eiliazadeh, Edmond. Recovery process of rubber material from industrial waste latex and modification of natural rubber based on natural resin, lac. Brunel University, 1988.

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1711-1776, Bucci Giulio, ed. Natura agrestis: Arcangelo Resani e Giulio Bucci : il naturalismo nell'arte faentina del Settecento. Edit Faenza, 2011.

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Inc American Gum Importers Assoc. Natural Resins. Creative Media Partners, LLC, 2022.

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Inc American Gum Importers Assoc. Natural Resins. Creative Media Partners, LLC, 2022.

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Inc American Gum Importers Assoc. Natural Resins. Creative Media Partners, LLC, 2018.

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Satake, M., A. Nishida, K. Fujiwara, et al. Marine Natural Products. Springer, 2010.

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Parker, Philip M. The World Market for Lac; Natural Gums, Resins, Gum Resins, and Balsams: A 2007 Global Trade Perspective. ICON Group International, Inc., 2006.

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The World Market for Lac; Natural Gums, Resins, Gum Resins, and Balsams: A 2004 Global Trade Perspective. Icon Group International, Inc., 2005.

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Book chapters on the topic "Natural resins"

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Halpine, S. M. "Trace Amino Acid Composition of Natural Resins." In ACS Symposium Series. American Chemical Society, 1995. http://dx.doi.org/10.1021/bk-1995-0617.ch013.

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Decq, Louise, Frederic Lynen, Michael Schilling, et al. "The analysis of European lacquer: optimization of thermochemolysis temperature of natural resins." In inArt 2016. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-55417-3_11.

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Poli, Tommaso, Anna Piccirillo, Marco Nervo, and Oscar Chiantore. "Aging of Natural Resins in Presence of Pigments: Metal Soap and Oxalate Formation." In Metal Soaps in Art. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-90617-1_8.

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Cimmino, S., E. D’Alma, E. Ionata, F. La Cara, and C. Silvestre. "Biodegradability Study on Films for Packaging Based on Isotactic Polypropylene Modified with Natural Terpene Resins." In Microbiology of Composting. Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-662-08724-4_22.

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Gooch, Jan W. "Resin, Natural." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_9942.

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Gooch, Jan W. "Natural Resin." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_7799.

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Mishra, Munmaya, and Biao Duan. "Natural Resin." In The Essential Handbook of Polymer Terms and Attributes. CRC Press, 2024. http://dx.doi.org/10.1201/9781003161318-114.

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Ribeiro, R., A. T. Marques, and J. L. Alves. "Sustainable Composites Based on Pine Resin and Flax Fibre." In Advances in Natural Fibre Composites. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-64641-1_14.

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Kesava, Munusamy, and Kannaiyan Dinakaran. "Natural-Fiber-Reinforced Epoxy and USP Resin Composites." In Spherical and Fibrous Filler Composites. Wiley-VCH Verlag GmbH & Co. KGaA, 2016. http://dx.doi.org/10.1002/9783527670222.ch5.

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Srinivasan, R. Ganapathy, C. Rajaravi, S. Palani, and S. Karthik. "Experimental Characterization of CNSL-Epoxy Resin Reinforce Natural Fiber." In Materials, Design and Manufacturing for Sustainable Environment. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-3053-9_6.

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Conference papers on the topic "Natural resins"

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Casey, Megan. "Use of Silane-Terminated Resins to Enable High Natural Rubber Loading in Tire Tread." In Technical Meeting of the Rubber Division, ACS. Rubber Division - American Chemical Society (ACS), 2024. https://doi.org/10.52202/077855-0017.

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Baliashvili, Giorgi, Sophiko Kvinikadze, Tamar Iashvili, Davit Tsverava, and Aleksandre Vanishvili. "DEVELOPMENT OF METAL-POLYMER LAMINATE WITH HIGH MECHANICAL PROPERTIES." In SGEM International Multidisciplinary Scientific GeoConference 24. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/6.1/s24.04.

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Basalt fiber-reinforced metal-polymer composites represent a cutting-edge class of materials that merge the robustness of metal with the pliability of polymer. Originating from natural volcanic rocks, basalt fibers possess remarkable mechanical properties, such as high tensile strength, resistance to extreme temperatures, and chemical inertness. Integrating basalt fibers into a polymer matrix like epoxy or thermoplastic resins significantly boosts the composite's resistance to dynamic impacts and its energy absorption capacity. The metal component ensures structural integrity and strength, whi

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Nambu, Koichiro, and Ryuji Kunimatsu. "Surface Modification of Copper by Resin Particle Peening Treatment." In IFHTSE 2024. ASM International, 2024. http://dx.doi.org/10.31399/asm.cp.ifhtse2024p0297.

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Abstract Copper is expected to be increasingly used in electric vehicle components because of its high electrical and thermal conductivity. On the other hand, copper has the disadvantage of low fatigue strength compared to structural members such as steel and aluminum alloys. Therefore, the peening treatment is used in this study to increase the strength of copper. However, the projectile used in conventional peening treatments is much harder than copper, which may lead to deterioration of surface properties. Therefore, we decided to use a resin particle peening treatment that uses soft resin

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Maranon, Alejandro, Yan Sanabria, Mari´a F. Contreras, and Wilson Hormaza. "Impact Performance of Natural Fique-Fiber Reinforced Composites." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-67518.

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Laminated composites made of natural fiber and polymeric resins have a strong potential for engineering applications as they offer an attractive combination of mechanical and physical properties together with their environmental friendly character. Among structural applications, hybrid ballistic systems made of natural fiber composites have attracted the attention of engineers and scientists because of their excellent energy absorption compared to mild steel. In this paper, the impact and tensile properties of fique fibers (fucraea) reinforced composites are investigated. Plain woven fique-fab

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Abilova, Guzaliya, Dmitriy Milordov, Svetlana Yakubova, Elvira Tazeeva, and Makhmut Yakubov. "Effect of Natural Amphiphiles in Resins on Asphaltene Stability." In SPE Russian Petroleum Technology Conference. Society of Petroleum Engineers, 2018. http://dx.doi.org/10.2118/191550-18rptc-ms.

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Abilova, Guzaliya, Dmitriy Milordov, Svetlana Yakubova, Elvira Tazeeva, and Makhmut Yakubov. "Effect of Natural Amphiphiles in Resins on Asphaltene Stability (Russian)." In SPE Russian Petroleum Technology Conference. Society of Petroleum Engineers, 2018. http://dx.doi.org/10.2118/191550-18rptc-ru.

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Hong, Jian, Dragana Radojcic, and Zoran Petrovic. "The Effect of Structure Regularity of Natural Oils on Properties of Oil-based Epoxy Resins." In 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/whdh9748.

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One issue when utilizing natural oils as raw materials for preparing polymers in comparison with petrochemical starting materials is their complexity. Standard natural oils have typically very heterogeneous structure, which is reflected on properties of polymers. However, oils with regular structure such as high oleic oils, offer high degree of regularity approaching that of triolein. Cationic polymerization of epoxidized oils was carried in bulk using tris (pentafuorophenyl)borane. Epoxy resin made solely from epoxidized soybean oil (ESO) was compared with that from epoxidized high oleic alga

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Valls Mompo, Marc, Gianni Gallello, Irene Sáez Giménez, Agustín Pastor Garcia, and María Oreto Garcia Puchol. "A natural resins reference collection to identify organic compounds in archaeological samples." In 2023 IMEKO TC4 International Conference on Metrology for Archaeology and Cultural Heritage. IMEKO, 2023. http://dx.doi.org/10.21014/10.21014/tc4-arc-2023.155.

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Valls Mompo, Marc, Gianni Gallello, Irene Sáez Giménez, Agustín Pastor Garcia, and María Oreto Garcia Puchol. "A natural resins reference collection to identify organic compounds in archaeological samples." In 2023 IMEKO TC4 International Conference on Metrology for Archaeology and Cultural Heritage. IMEKO, 2023. http://dx.doi.org/10.21014/tc4-arc-2023.155.

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Sych, Oleksandr, Svyatoslav Vuchkan, Hanna Vasylyeva, Myroslav Karbovanets, and Marianna Yevych. "THE USE OF NATURAL ZEOLITES OF TRANSCARPATHIA TO SOLVE ENVIRONMENTAL PROBLEMS." In 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022v/6.2/s24.05.

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Purification of aqueous solutions from radionuclide contamination is an extremely problematic topic, which is the subject of many scientific papers. This scientific topic is very relevant to Ukraine. In particular, the synthetic adsorbents � activated carbon, zeolites, metal oxide-adsorbents TiO2, titanium or zirconium phosphates, ion exchange resins, etc., are often used for the removal of heavy metal cations Pb (II), Cd (II), Ba (II), Hg (II), Sr (II) as well as some anions Cl-, F- from the aquatic environment. A special place among adsorbents is occupied by ion exchange resins, which, as a

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Reports on the topic "Natural resins"

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Orhan, Nilüfer, Burak Temiz, Hale Gamze Ağalar, and Gökalp İşcan. Boswellia serrata Oleogum Resins and Extracts Laboratory Guidance Document. ABC-AHP-NCNPR Botanical Adulterants Prevention Program, 2022. http://dx.doi.org/10.59520/bapp.lgd/mqgn3574.

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Boswellia resins are described in numerous ancient texts and have been an important trade material for the civilizations located in the Arabian Peninsula and North Africa since at least the third millennium BCE. Frankincense (olibanum) is an exudate that seeps from injured bark of Boswellia species (Burseraceae). The oleogum resin obtained from Boswellia serrata is called Indian frankincense and is used in the Ayurvedic, Siddha, and Unani systems of traditional medicine. Additionally, its extracts and essential oils are used in soaps, cosmetics, foods, beverages, and incense products. This Lab

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Medina Bejarano, Edwin Gilberto, Danila Michel Garzón Peralta, and Camilo Romero Espinosa. Caracterización mecánica de propiedades de un material compuesto por resina poliéster y fibras de preferencia natural. Escuela Tecnológica Instituto Técnico Central, 2023. http://dx.doi.org/10.55411/2023.11.

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Tomando conciencia del impacto ambiental generado por el uso de materiales sintéticos y los altos valores de energía involucrados en su extracción y procesamiento, el proyecto busca la caracterización, bajo normas técnicas, de materiales obtenidos por metodología de fabricación de adición de material, específicamente a través de la tecnología de impregnación de reciña y fibras . Para ello, no solo se obtendrá la caracterización de propiedades para el material base (resina poliéster), sino que obtendrán una metodología para elaborar piezas de material compuesto por resinas poliéster y fibras de

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Schuurman, Gregor, Hawkins-Hoffman Cat, David Cole, et al. Resist-accept-direct (RAD)—a framework for the 21st-century natural resource manager. National Park Service, 2020. http://dx.doi.org/10.36967/nrr-2283597.

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Trammell, Michael P., and Peter J. Pappano. Analysis of Natural Graphite, Synthetic Graphite, and Thermosetting Resin Candidates for Use in Fuel Compact Matrix. Office of Scientific and Technical Information (OSTI), 2011. http://dx.doi.org/10.2172/1024284.

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Whitfield, Paula, Burton Suedel, Kelly Egan, et al. Engineering With Nature® principles in action : islands. Engineer Research and Development Center (U.S.), 2022. http://dx.doi.org/10.21079/11681/44940.

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The Engineering With Nature® (EWN) Program supports nature-based solutions that reduce coastal-storm and flood risks while providing environmental and socioeconomic benefits. Combining the beneficial use of dredged sediments with the restoration or creation of islands increases habitat and recreation, keeps sediment in the system, and reduces coastal-storm and flood impacts. Given the potential advantages of islands, EWN seeks to support science-based investigations of island performance, impacts, and benefits through collaborative multidisciplinary efforts. Using a series of case studies led

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Widmer, Mireille, Marina Apgar, Jiniya Afroze, Sudhir Malla, Jill Healey, and Sendrine Constant. Capacity Development in a Participatory Adaptive Programme: the Case of the Clarissa Consortium. Institute of Development Studies, 2022. http://dx.doi.org/10.19088/clarissa.2022.001.

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Doing development differently rests on deliberate efforts to reflect and learn, not just about what programmes are doing and achieving, but about how they are working. This is particularly important for an action research programme like Child Labour: Action- Research-Innovation in South and South-Eastern Asia (CLARISSA), which is implemented by a consortium of organisations from across the research and development spectrum, during a rapidly changing global pandemic. Harnessing the potential of diverse skills and complementary strengths across partners in responding to the complex challenge of

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Widmer, Mireille, Marina Apgar, Jiniya Afroze, Sudhir Malla, Jill Healey, and Sendrine Constant. Capacity Development in a Participatory Adaptive Programme: the Case of the Clarissa Consortium. Institute of Development Studies, 2022. http://dx.doi.org/10.19088/clarissa.2022.001.

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Doing development differently rests on deliberate efforts to reflect and learn, not just about what programmes are doing and achieving, but about how they are working. This is particularly important for an action research programme like Child Labour: Action- Research-Innovation in South and South-Eastern Asia (CLARISSA), which is implemented by a consortium of organisations from across the research and development spectrum, during a rapidly changing global pandemic. Harnessing the potential of diverse skills and complementary strengths across partners in responding to the complex challenge of

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Border, Peter. Outward medical tourism. Parliamentary Office of Science and Technology, 2020. http://dx.doi.org/10.58248/pb38.

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Medical tourism refers to when people seek medical treatment in a different country than the one they reside. In the context of this brief it refers to UK residents seeking elective, non-emergency medical treatment abroad. This briefing outlines the nature of the global medical tourism industry, the number of UK residents seeking medical treatments abroad, the types of treatments sought and the reasons for seeking them, the countries visited, and examines the issues raised for the patients and for the NHS on their return.

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Lukezich. L51775 Susceptibility of Modern ERW Pipe to Selective Weld Seam Corrosion in Wet Environments. Pipeline Research Council International, Inc. (PRCI), 1998. http://dx.doi.org/10.55274/r0010424.

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Grooving corrosion is a phenomenon by which the weld seam of electric resistance welded (ERW) pipe is preferentially attacked in wet natural gas environments containing CO,. The attack initiates as an aligned string of pits which grow and intersect, forming a round-bottomed groove of damage centered on the weld seam. The susceptibility of ERW pipe to this damage mechanism is known to be related to the chemical composition (particularly the sulfur content) of the pipe, the welding process employed, and the use of a post weld heat treatment. Of particular concern to the natural gas pipeline indu

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Lers, Amnon, and Gan Susheng. Study of the regulatory mechanism involved in dark-induced Postharvest leaf senescence. United States Department of Agriculture, 2009. http://dx.doi.org/10.32747/2009.7591734.bard.

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Postharvest leaf senescence contributes to quality losses in flowers and leafy vegetables. The general goal of this research project was to investigate the regulatory mechanisms involved in dark-induced leaf senescence. The regulatory system involved in senescence induction and control is highly complex and possibly involves a network of senescence promoting pathways responsible for activation of the senescence-associated genes. Pathways involving different internal signals and environmental factors may have distinctive importance in different leaf senescence systems. Darkness is known to have

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