Relevant bibliographies by topics / Plastic Ratio

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Plastic Ratio'

Author: Grafiati
Published: 5 June 2025
Last updated: 2 August 2025

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Journal articles on the topic "Plastic Ratio"

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Uyen, Tran Minh The, Pham Son Minh, Van-Thuc Nguyen, Thanh Trung Do, Hai Nguyen Le Dang, and Van Thanh Tien Nguyen. "Amplification Ratio of a Recycled Plastics-Compliant Mechanism Flexure Hinge." Applied Sciences 13, no. 23 (2023): 12825. http://dx.doi.org/10.3390/app132312825.

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This research focuses on the fabrication of plastic flexure hinges from diverse plastics such as ABS, PP, HDPE, and LDPE. To enhance hinge efficiency, the recycling ratios are also investigated. The amplification ratio of different recycle ratios and plastic types are measured. The results show that the input and output displacements of all PP, ABS, and HDPE hinges are linear. The presence of recycled plastics has no impact on this basis. The pure PP, ABS, and HDPE flexure hinges achieve the highest amplification ratios of 5.728, 8.249, and 5.668. The addition of recycled plastics reduces the
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Istadi, Istadi, Luqman Buchori, and Suherman Suherman. "PLASTIC WASTE CONVERSION TO LIQUID FUELS OVER MODIFIED-RESIDUAL CATALYTIC CRACKING CATALYSTS: MODELING AND OPTIMIZATION USING HYBRID ARTIFICIAL NEURAL NETWORK – GENETIC ALGORITHM." Reaktor 13, no. 3 (2011): 131. http://dx.doi.org/10.14710/reaktor.13.3.131-139.

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The plastic waste utilization can be addressed toward different valuable products. A promising technology for the utilization is by converting it to fuels. Simultaneous modeling and optimization representing effect of reactor temperature, catalyst calcinations temperature, and plastic/catalyst weight ratio toward performance of liquid fuel production was studied over modified catalyst waste. The optimization was performed to find optimal operating conditions (reactor temperature, catalyst calcination temperature, and plastic/catalyst weight ratio) that maximize the liquid fuel product. A Hybri
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Duranay, Neslihan. "CO2 emission from combustion of lignite, waste plastics and biomass mixture pellets." Chemical Industry and Chemical Engineering Quarterly 25, no. 3 (2019): 239–46. http://dx.doi.org/10.2298/ciceq180921002d.

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Combustion is a familiar technique for disposal of urban wastes such as plastics when their recycling is impractical. It offers energy recycling and waste diminution. In this paper, combustion behaviours of blend pellets composed of binary and triple mixtures of plastic wastes, biomass and lignite in a laboratoryscale fixed-bed combustion system were examined. The materials chosen as waste plastic, biomass and lignite were, respectively, market plastic bags, furniture plant waste powder and Bing?l Karl?ova lignite. The effect of varied blend pellet composition on the combustion behaviour and C
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Saka, Moruff Gbolagade, Y. D. Dongs, and Y. I. Aujara. "POTENTIALS OF SAWDUST AND DISPOSED WATER SACHET WASTES FOR WOOD PLASTIC COMPOSITE PRODUCTION." FUDMA JOURNAL OF SCIENCES 6, no. 5 (2022): 76–81. http://dx.doi.org/10.33003/fjs-2022-0605-1097.

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The study investigated the potential of sawdust and disposed water plastics for the production of wood plastic composite. The sawdust was obtained from the plank market in Yola, while, the water sachets were hand-picked within the Modibbo Adama University premises. The gathered sawdust were sieved into 1.0 and 2.0 mm particle sizes, thoroughly mixed with already melted water sachet plastics at a ratio of 1:25 (100: 2500 ml) and 1:30 (100:3000 ml) respectively,. The mixtures were heated at (105.20 C,) and then filled into an already constructed oiled Aluminum mold of size 1.5 x 6 x 15 cm. Press
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Pasaribu, Monita, Muhammad Arya Sena, Maria Kristiani, Winda Sri Jaman, Asadian Puja Enggita, and Supardi Supardi. "Produksi Briket dari Limbah Plastik dan Ampas Tebu dengan Metode Pirolisis." JURNAL SAINS TEKNOLOGI & LINGKUNGAN 10, no. 2 (2024): 246–51. http://dx.doi.org/10.29303/jstl.v10i2.599.

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Plastic is a polymer product that is widely used in society. This resultx in an increase in plastic waste. Plastic waste processing needs to be done to prevent environmental emissions. Plasstic waste can be converted into an alternative energy source in briquettes. The reasearch object is to produce briquettes from plastic and sugarcane bagasse. Plastic briquettes and bagasse have a ratio of 1:2, 1:1 and 2:1. The second stage is the preparation and design of the tool using the pyrolisis method. Research variables include the composition of plastic waste and sugarcane bagasse. Analysis of briqu
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Berghuis, Nila Tanyela, Ujang Ahmad Soleh, Zulfikar Fauzan Ali, et al. "Utilization of Japanese Seeds and Soybean Seeds as Raw Materials for Making Flour." Stannum : Jurnal Sains dan Terapan Kimia 4, no. 2 (2022): 68–73. http://dx.doi.org/10.33019/jstk.v4i2.3632.

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The accumulation of plastic waste and excessive use of plastic is a common environmental issue in Indonesia. Plastics are synthetic polymers that are stable, water-resistant, light, flexible, and strong, but are very difficult to be broken down by microorganisms. Decomposition of plastic waste by burning can cause other environmental issues and during the combustion process can produce dioxin compounds that are harmful to health. An available and affordable alternative to reduce the use of plastic is by using bioplastics. Bioplastics are plastics made from natural materials that can be broken
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Berghuis, Nila Tanyela, Diah Kemala Mutmainah, Meliana Nur Savitri, et al. "Bioplastic from Cassava peel and eggshell waste." Journal of Natural Sciences and Mathematics Research 8, no. 2 (2022): 75–83. http://dx.doi.org/10.21580/jnsmr.2022.8.2.13696.

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The accumulation of plastic waste and excessive use of plastic is a common environmental issue in Indonesia. Plastics are synthetic polymers that are stable, water-resistant, light, flexible, and firm but very difficult to break down by microorganisms. Decomposition of plastic waste by burning can cause other environmental issues and, during the combustion process can produce dioxin compounds that are harmful to health. An available and affordable alternative to reduce the use of plastic is by using bioplastics. Bioplastics are plastics made from natural materials that microorganisms can break
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Sikora, Janusz, Łukasz Majewski, and Andrzej Puszka. "Modern Biodegradable Plastics—Processing and Properties: Part I." Materials 13, no. 8 (2020): 1986. http://dx.doi.org/10.3390/ma13081986.

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This paper presents a characterization of a plastic extrusion process and the selected properties of three biodegradable plastic types, in comparison with LDPE (low-density polyethylene). The four plastics include: LDPE, commercial name Malen E FABS 23-D022; potato starch based plastic (TPS-P), BIOPLAST GF 106/02; corn starch based plastic (TPS-C), BioComp®BF 01HP; and a polylactic acid (polylactide) plastic (PLA), BioComp®BF 7210. Plastic films with determined geometric parameters (thickness of the foil layer and width of the flattened foil sleeve) were produced from these materials (at indiv
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Kozhevnikova, M. E. "Plastic zone boundary and Poisson’s ratio depending on plastic loosening." Physical Mesomechanics 16, no. 2 (2013): 162–69. http://dx.doi.org/10.1134/s1029959913020070.

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Silvia Indrarini and Julinar Tryane Kobar. "Analisis Pengaruh Current Ratio, Price Earning Ratio, Return On Asset Dan Debt To Equity Ratio Terhadap Nilai Perusahaan." Akubis : Jurnal Akuntansi dan Bisnis 9, no. 1 (2022): 39–46. http://dx.doi.org/10.37832/akubis.v9i1.51.

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This study aims to determine the influence analysis of the Current Ratio (CR), Price Earning Ratio (PER), Return On Assets (ROA) and Debt To Equity Ratio (DER) on company value in plastic and packaging companies for the 2016-2020 period. This type of research is explanatory research. The population in this study were 15 plastic and packaging companies listed on the Indonesia Stock Exchange for the 2016-2020 period, the sample was selected using the purposive sampling method, 5 companies were obtained.
 The results of multiple linear regression analysis show that CR, PER, ROA and DER simul
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Dissertations / Theses on the topic "Plastic Ratio"

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Fugagnoli, Alice. "The ratio of plastic to plankton in the Mediterranean Sea." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/16962/.

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Plastic pollution is a huge problem that is affecting all the oceans of the Earth. Plastic items end into the sea, break into tiny pieces and pollute the marine environment. The aim of this research is to increase our knowledge on this problem by comparing microplastic and zooplankton distributions. Samples from the Mediterranean Sea and Gibraltar Strait have been collected and analyzed. Plastic fragments have been extracted, weighted, photographed, measured and analyzed with a hyperspectral camera. The planktonic part of the samples has been analyzed identifying the main typology of organism
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Barnes, Graham Edward. "The plastic limit and workability of soils." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/the-plastic-limit-and-workability-of-soils(28a2491e-6178-4993-aa10-4b68cf892570).html.

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Previous thread rolling methods for the plastic limit are shown to be inadequate and inaccurate. Alternative methods for the plastic limit are shown to be imprecise and unreliable. The strength-based concept and use of the fall-cone test to determine the plastic limit are shown to be flawed. An apparatus that replicates Atterberg’s rolling technique, devised and developed by the author, is described, referred to as the Barnes Apparatus. A thread of soil is rolled between two plates configured to permit extrusion and reduction of diameter with much less operator interference than with the stand
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Uvieghara, Mathias N. "The Effect of Deborah Number and Aspect Ratio on the Film Casting of LLDPE Melts." Fogler Library, University of Maine, 2004. http://www.library.umaine.edu/theses/pdf/UviegharaMN2004.pdf.

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Dareeju, Biyanvilage. "Performance evaluation of unsaturated rail track foundations under cyclic moving wheel load." Thesis, Queensland University of Technology, 2017. https://eprints.qut.edu.au/102697/4/Biyanvilage%2520Sampath%2520Sri%2520Sameera_Dareeju_Thesis.pdf.

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This thesis developed an alternative laboratory element testing method to evaluate the response of the unsaturated soils of rail track foundations under repeated moving wheel loadings. The novel laboratory testing method is more capable of producing the realistic strength-deformation characteristics of the unsaturated soils with the effects of principal stress axis rotation (PSAR), which can be used to redesign the conservative rail track guidelines.
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Scielzo, Nicholas David. "Measurement of the beta-neutrino correlation in laser trapped {sup 21}Na." Berkeley, Calif. : Oak Ridge, Tenn. : Lawrence Berkeley National Laboratory ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2003. http://www.osti.gov/servlets/purl/821455-YDxgQ2/native/.

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Thesis (Ph.D.); Submitted to Univ. of California, Berkeley, CA (US); 1 Jun 2003.<br>Published through the Information Bridge: DOE Scientific and Technical Information. "LBNL--54350" Scielzo, Nicholas David. USDOE Director. Office of Science. Nuclear Physics (US) 06/01/2003. Report is also available in paper and microfiche from NTIS.
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Okonkwo, Igweani Uchenna Titus. "Optical fiber transmission systems for in-door next generation broadband access network." Thesis, Brunel University, 2014. http://bura.brunel.ac.uk/handle/2438/10539.

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This thesis investigates the generation and radio-over-fibre (RoF) transport of unlicensed 60 GHz millimetre-wave (mm-wave) frequency band. The investigated benefits of transmission schemes applicable for the mm-wave generation include optical carrier suppression (OCS), optical frequency multiplication (OFM) and remote heterodyne detection (RHD). For the in-door cabling of the mm-wave transmission, a low-cost polymer optical fibre (POF) along with bend-insensitive single mode fibre (BI-SMF) has been investigated for short-range networks. Transporting mm-wave generated signals over POF and BI-S
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Elsheikhi, Salah A. "A holistic approach to injection moulding optimisation for product quality and cost through the characterisation of reprocessed polymeric materials and process monitoring : experimental evaluations and statistical analysis of multiple reprocessing of unfilled and short glass fibre filled polypropylene materials : an optimised methodology to realise minimum product cost at an acceptable product quality." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5405.

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The plastics industry is one of the fastest growing major industries in the world. There is an increase in the amount of plastic used for all types of products due to its light weight and ability to reprocess. For this reason, the reprocessing of thermoplastics and the usability of reprocessed materials are gaining significance, and it is important to produce and consume plastic materials in an environmentally friendly way. In addition, rising raw material cost linked to the increased oil prices encouraged for reusing of the plastic materials. The aim of this research was to study and optimize
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Murtagian, Gregorio Roberto. "Surface integrity on grinding of gamma titanium aluminide intermetallic compounds." Diss., Available online, Georgia Institute of Technology, 2005, 2004. http://etd.gatech.edu/theses/available/etd-08192004-181021/unrestricted/murtagian%5Fgregorio%5Fr%5F200412%5Fphd.pdf.

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Thesis (Ph. D.)--Mechanical Engineering, Georgia Institute of Technology, 2005.<br>Ashok Saxena, Committee Member ; Carlos Santamarina, Committee Member ; Thomas Kurfess, Committee Member ; Hugo Ernst, Committee Member ; Steven Danyluk, Committee Chair ; David McDowell, Committee Member. Vita. Includes bibliographical references.
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Mitschker, Felix [Verfasser], Peter [Gutachter] Awakowicz, and Anjana [Gutachter] Devi. "Influence of plasma parameters in pulsed microwave and radio frequency plasmas on the properties of gas barrier films on plastics / Felix Mitschker ; Gutachter: Peter Awakowicz, Anjana Devi ; Fakultät für Elektrotechnik und Informationstechnik." Bochum : Ruhr-Universität Bochum, 2019. http://d-nb.info/1175205095/34.

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Santos, Ana Sofia Neves dos. "A inserção da economia portuguesa nas cadeias globais de valor : o caso do sector da borracha e dos plásticos." Master's thesis, Instituto Superior de Economia e Gestão, 2014. http://hdl.handle.net/10400.5/7574.

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Mestrado em Economia Internacional e Estudos Europeus<br>O presente trabalho tem como objectivo estudar o sector da borracha e dos plásticos de forma a perceber a sua importância para a economia portuguesa. Começa-se por analisar alguns dos seus indicadores económicos: valor bruto de produção (VBP), valor acrescentado bruto (VAB), emprego, produtividade do trabalho e stock de capital fixo. De seguida, realiza-se uma breve análise do desempenho das empresas do sector através de alguns dos seus rácios económico-financeiros. Analisam-se ainda os multiplicadores de produção, valor acrescentado e e
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Books on the topic "Plastic Ratio"

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Center, Lewis Research, ed. An evaluation of the plasticity-induced crack-closure. National Aeronautics and Space Administration, Lewis Research Center, 1998.

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Vaughan, R. E. An inelastic analysis of a welded aluminum joint. National Aeronautics and Space Administration, Marshall Space Flight Center, 1994.

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Jupp, Ken. Genuine plastic radios of the mid-century. Schiffer Pub., 1998.

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Sharratt, Carolyn. To test the effectiveness and requirements for screening plastic panels from radio interference. University of Birmingham, 1997.

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Gurtovnik, I. G. Stekloplastiki radiotekhnicheskogo naznachenii͡a︡. "Khimii͡a︡", 1987.

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Council, Electricity. Radio-frequency plastics welding: Demonstration for courses in electrical and control engineering. Electricity Council, 1986.

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Council, Electricity. Radio frequency plastics welding: Demonstration for courses in electrical and control engineering. Electricity Council, 1986.

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Bracci, Susanna. Giambologna: Il Ratto delle sabine e il suo restauro. Sillabe, 2016.

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Lambie, Jack. Designing and building composite R/C model aircraft: Featuring foam, fiberglass, and the new plastics : the latest techniques. Motorbooks International, 1987.

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Getting the Best from Ratio Plastic Models. Irwell Press, 1996.

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Book chapters on the topic "Plastic Ratio"

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Truszkowski, Wojciech. "Strain ratio as the measure of plastic anisotropy." In The Plastic Anisotropy in Single Crystals and Polycrystalline Metals. Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-015-9692-3_3.

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Truszkowski, Wojciech. "The variation of strain ratio in single crystals subdued to tensile test." In The Plastic Anisotropy in Single Crystals and Polycrystalline Metals. Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-015-9692-3_7.

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Man, Chi-Sing, and Qingbo Ao. "Plastic Strain Ratio and Texture Coefficients in Orthotropic Sheets of Cubic Metals." In Review of Progress in Quantitative Nondestructive Evaluation. Springer US, 1996. http://dx.doi.org/10.1007/978-1-4613-0383-1_177.

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Kumar, Vikas, Karanvir Sharma, Devendra Singh Bisht, and Harry Garg. "Optimum Concentration Ratio for Plastic Optical Fiber-Based Fresnel Lens Daylighting System." In Springer Proceedings in Energy. Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-9280-2_21.

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Truszkowski, Wojciech. "The variation of strain ratio at the tensile test described by a hyperbolic function." In The Plastic Anisotropy in Single Crystals and Polycrystalline Metals. Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-015-9692-3_5.

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Hwalla, Joud, Mariane Saba, Joseph Assaad, and Hilal El-Hassan. "Performance of Metakaolin-Based Alkali-Activated Mortar for Underwater Placement." In Lecture Notes in Civil Engineering. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-69626-8_9.

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AbstractThis study assesses the performance of metakaolin (MK)-based alkali-activated geopolymers as potential materials for underwater applications. Mortars were formulated using gradually higher sand volumes, which resulted in binder-to-sand ratios varying from 1:3 to 1:1.85 and 1:0.8. The alkali-activated solution (AAS) was produced using sodium silicate and sodium hydroxide. The AAS was adjusted to achieve a flow of 16 and 22 ± 1 cm while the setting times, plastic viscosity, washout loss, and 28-day compressive strengths were determined. Generally, an increase in AAS content prolonged set
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Ashida, Yosuke, Yuji Koetaka, and Iathong Chan. "Full Plastic Strength of Circular Hollow Section Panel Zone with Large Aspect Ratio." In Lecture Notes in Civil Engineering. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-03811-2_34.

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Abdullahi, Shagali Abdulmajid, Haoran Qing, Kai Xu, et al. "Fast Pyrolysis of PET Plastic and Peanut Shell: Assessment of Blending Ratio Effect on Synergism." In Environmental Science and Engineering. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-86829-0_88.

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Zhao, Mingzhe, Haifeng Wang, Jiaxin Zhang, et al. "Surface Settlement Induced by Excavation of Double-Line Shield Tunnel." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-2417-8_14.

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AbstractIn the construction of the Harbin Metro Line 3 twin-bore tunnel project, the ABAQUS numerical simulation method was employed to investigate the impact of various grouting thicknesses, burial depth ratios, tunnel spacing, and excavation pressures on the geological conditions of the project. Corresponding construction control measures were proposed. The study revealed: (1) Grouting thickness is inversely proportional to ground settlement, with an optimal thickness of 0.3 m; (2) Lateral ground settlement increases with an increasing depth ratio, showing an initial increase followed by a d
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Yonggen, Yi, Fu Jiyou, Wang Chunlin, and Yansong Pan. "A Study on the Modification Technology Aimed at Enhancing the Dynamic Plastic Ratio of Konjac Gum." In Springer Proceedings in Materials. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-8883-5_12.

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Conference papers on the topic "Plastic Ratio"

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Mukeru, Bahizire Martin, and Bilal Patel. "Co-gasification of Crude Glycerol and Plastic Waste using Air/Steam Mixtures: A Modelling Approach." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.194751.

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This study evaluated the air/steam co-gasification of crude glycerol (CG) and linear low density polyethylene (LLDPE). It was demonstrated that operating the process using air or a mixture of air and steam has significant implications for carbon conversion efficiency (CCE), cold gas efficiency (CGE), lower heating value (LHV) gasifier output temperature and syngas concentration. The CCE reached a maximum value of 100% at equivalence ratio (ER) of 0.3 for 25% LLDPE and an ER of 0.35 for 75% LLDPE when air was used. When steam was introduced in the gasifier at a fixed rate (SFR =0.5), the CCE of
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Torres-Acosta, Andrés A., Alberto A. Sagüés, and Rajan Sen. "Galvanic Interaction between Carbon Fiber Reinforced Plastic (CFRP) Composites and Steel in Chloride Contaminated Concrete." In CORROSION 1998. NACE International, 1998. https://doi.org/10.5006/c1998-98648.

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Abstract Experiments were performed to determine the possible extent of galvanic corrosion when CFRP and steel are in contact in chloride contaminated concrete. Three concrete environments (water-to-cement (w/c) ratio of 0.41) at relative humidities (R.H.) of ~60%, ~80% and ~95%, and 14 kg/m3 chloride were investigated. The CFRP composite potential reached between -180 and -590 mV (vs CSE) when it was in contact with steel at these environments. Results showed significant galvanic action in the 80% RH chloride contaminated concrete (nominal steel current densities as high as 0.3 μA/cm2).
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AWOYERA, Paul O. "Melted plastics as the exclusive binder for masonry units: A sustainable solution for the construction industry." In Civil and Environmental Engineering for Resilient, Smart and Sustainable Solutions. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903414-68.

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Abstract. This study investigates the feasibility of using melted plastic wastes, specifically low-density polyethylene (LDPE) and high-density polyethylene (HDPE), as the sole binder in masonry blocks in light-load applications, addressing both environmental and construction challenges. Repurposing plastics offers a sustainable alternative owing to the increasing plastic waste crisis and high carbon footprint of traditional cement. Predetermined plastic-to-aggregate ratios (1:1.5, 1:2, and 1:2.5) were adopted to produce masonry units, and properties of hardened samples, such as compressive st
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Bruijn, E., J. D. Terpstra, A. M. Gresnigt, and W. F. Molenaar. "Plastic Design of Flexible Breasting Dolphins." In ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2005. http://dx.doi.org/10.1115/omae2005-67552.

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In the development of design methods for single-pile flexible dolphins used for the berthing of bulk carriers, the design stress has been gradually increased to the yield stress to employ the elastic energy absorption capacity of the pile more optimally. In recent guidelines, e.g. EAU 1996 [3] and PIANC 2002 [5], also the plastic yielding capacity is implicitly or explicitly included in the ultimate load-bearing capacity. This movement towards plastic design is not accompanied by the development of calculation models and design criteria to assess the plastic load-bearing capacity and relevant
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Jabbour, Toni, Ghazi Asmar, and Chadi Ghaith. "Analysis of Plastic Helical Gear." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95283.

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The objective of this work is to present a mathematical model which studies helical gears made of a material with a small modulus of elasticity, when one or more pairs of teeth mesh prematurely during engagement. This phenomenon may lead to the modification of the load distribution on the teeth which are initially in contact and to a kind of interference causing additional tooth wear of the gear. In this case, the calculation of the contact ratio must account for the real number of pairs of teeth in contact. This is especially important when large deformations occur as is confirmed in the resu
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Otani, Akihito, Izumi Nakamura, and Hajime Takada. "Simplified Elasto-Plastic Response Analysis Method of Piping." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-2264.

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When piping systems are subjected to extreme seismic excitation, they undergo a plastic deformation that produces a large damping effect via energy dissipation. Based on our studies of the damping effect of the elasto-plastic response of piping, we have presented a simplified method for predicting the elasto-plastic response of piping in PVP conferences over the last several years. Yet the elasto-plastic response of piping calculated by this method resulted in conservative predictions compared with the results of piping model excitation tests. In the proposed method, we calculate the vibration
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Kumar, Ratod Vinod, and Dhondy Rupesh Kumar. "Innovating Concrete with Recycled Plastic (HDPE) Aggregates." In Second International Conference in Civil Engineering for a Sustainable Planet. AIJR Publisher, 2025. https://doi.org/10.21467/proceedings.179.2.

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This research investigates the performance of HDPE plasto sand coarse aggregate concrete using a water-cement (w/c) ratio of 0.60. Four different handmade aggregate types with ratios of 1:1, 1:2, 1:3 and 1:4 was utilized to assess the mechanical and durability properties of the concrete. Comprehensive tests, including compressive strength, tensile strength, and durability assessments, were conducted to evaluate the effectiveness of HDPE aggregates in concrete. The integration of recycled high-density polyethylene (HDPE) aggregates offers a sustainable alternative in concrete production. This s
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Kayamori, Yoichi, Takehiro Inoue, and Tetsuya Tagawa. "A Comparison Between BS7448-CTOD and ASTM E1290-CTOD in Linepipes." In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-79526.

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ASTM E1290 previously used the plastic hinge model for the calculation of CTOD, but has changed its CTOD calculation to J-based conversion since 2002. In this study, the ratio of ASTM-CTOD to BS-CTOD was analytically predicted and experimentally evaluated in linepipes. It was demonstrated that the CTOD ratio changed according to CTOD itself, and took a minimum in a CTOD ratio curve. The minimum value of the CTOD ratio was lower than 1 for low yield-to-tensile ratios, but higher than 1 for high yield-to-tensile ratios. The CTOD ratio tends to be higher than 1 for high CTOD caused by plastic ins
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Sri Rangaraja Bhattar, Shashank Ranganath, and Mallikarjuna Vankeswaram. "Enhancing the California Bearing Ratio(CBR) of expansive soil using shredded waste plastic." In ADVANCES IN SUSTAINABLE CONSTRUCTION MATERIALS. AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0144197.

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Kasahara, Naoto, Hideki Takasho, Nobuchika Kawasaki, and Masanori Ando. "Effective Stress Ratio of Triangular Pattern Perforated Plates." In ASME 2008 Pressure Vessels and Piping Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/pvp2008-61458.

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Tubesheet structures utilized in heat exchangers have complex perforated portions. For realistic design analysis, axisymmetric models with equivalent solid materials of perforated plate are conventionally adopted to simplify perforated area (figure1). Sec.III Appendix A-8000 (ASME 2004) provides elastic equivalent solid materials for flat tubesheets. Plastic properties were studied by Porowski et al. (1974), Gorden et al. (2002) and so on. Elevated temperature design of tubesheets requires plastic and creep properties in addition. The purpose of this study is to develop a general determination
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Reports on the topic "Plastic Ratio"

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Rosenfeld. L51686 Effect of Defect Size and Yield to Tensile Ratio on Plastic Deformation Capacity Pipeline Steels. Pipeline Research Council International, Inc. (PRCI), 1993. http://dx.doi.org/10.55274/r0010160.

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Micro-alloyed low-carbon linepipe steels offer an advantageous combination of high toughness and a low carbon equivalent (CE or Pcm) for good weldability. The continuing improvements in pipeline steel manufacturing practices have also led to pipeline steels with higher yield to tensile (Y/T) ratios and a corresponding reduction in strain hardening capacity. Potential users of high Y/T ratio pipeline steels are somewhat reluctant to modify their existing specifications. This is because they do not have the required information to judge the performance characteristics of such steels under a wide
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Denys and Lefevre. L51739 Effect of Defect Size and YS-TS Ratio on X70 and X80 Pipe Plastic Deformation Capacity. Pipeline Research Council International, Inc. (PRCI), 1996. http://dx.doi.org/10.55274/r0010618.

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The objective of this research project, which is a logical extension of the work performed under Contract PR 202-010, was to generate additional experimental data to quantify the effect of plate thickness on the relationship between Y/T ratio and tolerable defect dimensions. To that end, an experimental program was undertaken on thin walled X70 and X80 linepipe steels in plate form.
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Denys and Lefevre. L51780 Interaction of Multiple Through-Thickness Defects Under Plastic Collapse Conditions Part 1. Pipeline Research Council International, Inc. (PRCI), 2000. http://dx.doi.org/10.55274/r0010339.

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The objective of this research project is to generate experimental information with the aim to quantify the conservatism of current interaction rules and to develop more accurate (less conservative) rules for "thin-walled" structures under plastic collapse. The conservatism in current defect interaction rules for ductile materials has been assessed by examining the failure behaviour of 8 mm and 10 mm thick, narrow (width: 100 mm and 120 mm) and wide (width: 427 mm) plate, specimens containing two coplanar or non-coplanar through thickness notches. The test results were compared to the failure
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He, Rui, Na (Luna) Lu, and Jan Olek. Development of In-Situ Sensing Method for the Monitoring of Water-Cement (w/c) Values and the Effectiveness of Curing Concrete. Purdue University, 2022. http://dx.doi.org/10.5703/1288284317377.

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As the most widely used construction material, concrete is very durable and can provide long service life without extensive maintenance. The strength and durability of concrete are primarily influenced by the initial water-cement ratio value (w/c), and the curing condition during the hardening process also influences its performance. The w/c value is defined as the total mass of free water that can be consumed by hydration divided by the total mass of cement and any additional pozzolanic material such as fly ash, slag, silica fume. Once placed, field concrete pavements are routinely cured with
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Denys, Waele, and Lefevre. L52239 Input to Code Revision for Interaction of Girth Weld Defects under Plastic Collapse Conditions. Pipeline Research Council International, Inc. (PRCI), 2005. http://dx.doi.org/10.55274/r0011348.

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A pipeline girth weld may contain one single or multiple defects. If discrete multiple notches occur, current codes define by applying proximity rules the defect dimensions to be used in an ECA. The defect interaction rules contained in pipeline specific standards are based on linear elastic fracture mechanics with conservative approximations. Similar solutions for failure by plastic collapse are non-existent. In this study, using experimental data of wide plate tests, interaction criteria for ductile girth welds containing multiple coplanar surface breaking defects are proposed. Based on a si
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Stuedlein, Armin, Ali Dadashiserej, and Amalesh Jana. Models for the Cyclic Resistance of Silts and Evaluation of Cyclic Failure during Subduction Zone Earthquakes. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, 2023. http://dx.doi.org/10.55461/zkvv5271.

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This report describes several advances in the cyclic failure assessment of silt soils with immediate and practical benefit to the geotechnical earthquake engineering profession. First, a database of cyclic loading test data is assembled, evaluated, and used to assess trends in the curvature of the CRR-N (cyclic resistance ratio - the number of equivalent cycles) relationship. This effort culminated in a plasticity index-dependent function which can be used to estimate the exponent b in the power law describing cyclic resistance, and may be used to estimate the cyclic resistance of silt soils a
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Saadeh, Shadi, Unmona Aditi, Mohammad Javad Kazemi, Elham Fini, and Roger Khoudessian. Performance Testing of Asphalt Binder Modified with Amine-Impregnated Zeolite and Plastic in Hot Mix Asphalt to Reduce Carbon Footprint. Mineta Transportation Institute, 2025. https://doi.org/10.31979/mti.2025.2323.

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The rise in global temperatures, driven in part by significant transportation carbon emissions, necessitate sustainable solutions for infrastructure. Traditional asphalt binders and lime additives significantly contribute to carbon emissions, and conventional liquid amine-based antistrip agents, which are used to reduce moisture damage, lose efficacy over time. This study evaluates the performance of PG 64-16 Low Carbon binder, incorporating 10% post-consumer plastic and amine-impregnated zeolite (AIMZ) as a protective carrier for liquid amines. Researchers compare this low-carbon binder to co
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Wilkowski, Maxey, and Eiber. L51705 Cyclic Pressure Fatigue Life of Pipelines with Plain Dents Dents with Gouges and Dents with Welds. Pipeline Research Council International, Inc. (PRCI), 1994. http://dx.doi.org/10.55274/r0010606.

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Research has been conducted to study the effects of dents, gouges, and weld seams on pipelines under cyclic internal pressure loading. The work associated with this project has involved both experimental and finite element analysis on pipes with D/t ratios from 19 to 94 experimentally and 18 to 100 theoretically. In support of this research, operators were surveyed regarding the expected dent shapes and failures that had occurred as a result of pipeline dents. The experimental portion of the work involved pipes (one 24" and several 12" NPS pipes) with controlled dents which were combined with
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Franke, J., M. O. Liedke, P. Dahmen, et al. Influence of coating structure of an SiOx barrier coating on a PET substrate on water vapor permeation activation energy. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.gs.nn.1.

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The application of plasma polymerized silicon-based coatings on plastic substrates is an effective way to adjust the permeability of the substrate. However, the permeation mechanisms are yet not fully understood. Here, the activation energy of permeation can offer valuable insights. In order to understand how the activation energy of permeation depends on the coating structure, five silicon-based coatings with varying oxygen content were analyzed, which led to property modifications ranging from silicon-oxidic to silicon-organic. Positron annihilation spectroscopy was employed to characterize
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Krey, Adrian, Vitus Zenz, Karolin Widera, Manuela List, Dirk Muscat, and Nicole Strübbe. Reactive extrusion of lignocellulosic biomass to produce biopolymer monomers using high-energy radiation and catalytic acids. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.ss.bbb.6.

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The increasing prevalence of bio-based and biodegradable plastics as an alternative to traditional plastics derived from crude oil is a noteworthy trend. Polybutylene succinate (PBS), a plastic produced from succinic acid, is among the promising materials for the future. However, the production of bio-based succinic acid through biotechnical processes in controlled environments presents challenges. This process leads to increased costs and is currently not economically competitive compared to crude oil-based succinic acid production. In addition to succinic acid, levulinic acid is another mono
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