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79 results for “Composites”
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Research ArticleOpen accessEvery word in the titleSynthesis, Characterization and Saponification of Poly (AN)-Starch Composites and Properties of their HydrogelsA. Hashem, M. A. Afifi, E. A. El-Alfy, A. HebeishHydrogels based on saponified products of poly (acrylonitrile, AN)-starch composites were prepared, characterized and their water abosrbency properties examined. The term composite refered to the resultant products of polymerizatin of AN with starch in presence of ceric ammonium nitrate (CAN) as initiator, that is the composite consists of poly(AN)-starch graft copolymer, homopoly(AN) , oxidized starch and unreacted starch. Thus AN … …American Journal of Applied Sciences, Vol. 2, Issue 3 · 31 Mar 2005 · 7,577 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleIn vitro Assessment of the Color Stability of Two Resin CompositesRacha Joseph Hajj, Lara Nasr, Carlos Khairallah, Louis HardanThis in vitro study aims to evaluate the effects of thermocycling and immersion in common dietary colorants on the color stability of two resin composites. 80 disk-shaped specimens divided into 2 groups of 40 each, were prepared using a plexiglass mold with the desired dimensions, polished, and stored in 37°C distilled water for 24 h. Thermocycling (10,000 cycles) was applied … …Current Research in Dentistry, Vol. 14, Issue 1 · 2 Aug 2023 · 6,860 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of Fibre Content on Compressive and Flexural Properties of Coconut Fibre Reinforced Epoxy CompositesJasem G. Alotaibi, Ayedh Eid Alajmi, Belal F. Yousif, Nbhan D. SalihCoconut fibre reinforced polymer composites are gaining popularity in the field of engineering due to the many benefits that come with them such as low cost of production, easy fabrication, enhanced strength compared to other polymer composites. Of late, there has been an increase in the use of composites that are naturally based because they have many benefits. In line … …American Journal of Applied Sciences, Vol. 17, Issue 1 · 20 Jun 2020 · 8,031 accessesView PDFCite
HypothesisOpen accessEvery word in the titleSequences for Determination of Prime Numbers by Elimination of CompositesJonathan M. Dugas, Brian M. O’ConnorIn this study, sequences are used for direct computation of prime numbers. A single equation for generating all prime numbers with the exception of 2 and 3 and composite numbers that are not divisible by 2 or 3 is presented. A periodicity to the indices of the composites generated by that equation is determined. An equation to determine the indices … …Journal of Mathematics and Statistics, Vol. 13, Issue 3 · 20 Jul 2017 · 8,042 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleFabrication and Tensile Property Analysis of Polymer Matrix Composites of Graphite and Silicon Carbide as FillersVikram G. Kamble, Naveen Kumar L.In a world there is ever-increasing demand for new materials, composite materials finds the topmost spot. Here in this work an attempt has been made to study the mechanical properties of Glass and Vinyl Ester composites with and without fillers. Laminates are prepared by Hand Layup technique with changing the volume percentage of Vinyl Ester and fillers in each. The … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 1 · 3 Dec 2015 · 8,032 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleMonomers Release from Dental Composites: Effect of Immersion Media and Photoactivation Light SourceRaquel A.B. da Silva, Talita P. Prates, Driely Barreiros et al.The present study aimed to evaluate qualitatively and quantitatively the products released by composites with different light sources when immersed in distilled water or artificial saliva. Thirty-six samples were obtained from the composites using a silicone matrix. Specimens were divided into 12 groups according to: Composite (Charisma®, FiltekTMSilorane or GC Kalore®), device used for the materials photoactivation (halogen light or … …Current Research in Dentistry, Vol. 5, Issue 1 · 14 Jan 2015 · 7,188 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Effect of Time Variation on the Wear Sliding Behavior of CompositesWafaa M. Salih, Sanaa M. Salih, Myada M. SalihComposites materials are widely used in all industries all over the world, replacing many other engineering materials. Reasons for such popularity are many, among such, are their physical and mechanical properties in addition to the simplicity of their manufacturing processes. Machine elements that are made of polymeric materials are usually exposed to different causes of failure such as wear. The … …American Journal of Applied Sciences, Vol. 6, Issue 5 · 31 May 2009 · 6,980 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleStatic and Dynamic Mechanical Behavior of Hydroxyapatite-Polyacrylic Acid Composites Under Simulated Body FluidKalpana S. Katti, Phanikumar Turlapati, Devendra Verma et al.In this work, we have investigated mechanical response of hydroxyapatite/polyacrylic composites under dry, wet and simulated body fluid conditions. Hydroxyapatite (HAP) is mineralized under two conditions; one, in presence of polyacrylic acid (in situ HAP), second, in absence of polyacrylic acid (ex situ HAP). Further, in situ and ex situ HAP are mixed with polyacrylic acid to make HAP/PAAc composites. … …American Journal of Biochemistry and Biotechnology, Vol. 2, Issue 2 · 30 Jun 2006 · 7,395 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleBond Strength of Bioactive vs. Conventional Resin Composites on Dentin Cleaned with Ozonated Water: An In Vitro StudyFernanda Rafaela Ribeiro, Anna Caroliny Detogni, Julio Katuhide Ueda et al.This study aimed to compare the micro tensile bond strength (μTBS) of bioactive and conventional resin composite to human dentin after the use of ozonated water (AO) as a cavity cleaning solution. A total of 32healthy human third molars were randomly assigned to four groups (n = 8)based on the type of composite and dentin cleaning. The first group received … …Current Research in Dentistry, Vol. 16, Issue 1 · 9 Jun 2025 · 6,312 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Linear and Quadratic Nature of Sequences for Determining Prime Numbers by Elimination of CompositesJonathan M. Dugas, Brian M. O’ConnorA previously derived set of sequences for generating prime numbers is modified by various algebraic and trigonometric manipulations. The modified sequences are then used to more efficiently generate prime numbers. The modified sequences are simplified from their original form and are much easier to implement into a computer program. It is shown by computation that the modified sequences more efficiently … …Journal of Mathematics and Statistics, Vol. 14, Issue 1 · 16 May 2018 · 7,405 accessesView PDFCite