Academic literature on the topic 'Crystalline Constituents'

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Journal articles on the topic "Crystalline Constituents"

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Y., L. N. MURTHY, and A. JAIRAJ M. "Crystalline Constituents of Flueggea microcarpa Blume." Journal of Indian Chemical Society Vol. 65, Oct 1988 (1988): 738–39. https://doi.org/10.5281/zenodo.6106592.

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Alhadid, Ahmad, Sahar Nasrallah, Liudmila Mokrushina, and Mirjana Minceva. "Design of Deep Eutectic Systems: Plastic Crystalline Materials as Constituents." Molecules 27, no. 19 (2022): 6210. http://dx.doi.org/10.3390/molecules27196210.

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Deep eutectic solvents (DESs) are a class of green and tunable solvents that can be formed by mixing constituents having very low melting entropies and enthalpies. As types of materials that meet these requirements, plastic crystalline materials (PCs) with highly symmetrical and disordered crystal structures can be envisaged as promising DES constituents. In this work, three PCs, namely, neopentyl alcohol, pivalic acid, and neopentyl glycol, were studied as DES constituents. The solid–plastic transitions and melting properties of the pure PCs were studied using differential scanning calorimetr
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Tschauner, Oliver. "General Trends in the Compression of Glasses and Liquids." Crystals 14, no. 9 (2024): 815. http://dx.doi.org/10.3390/cryst14090815.

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The present work relates the isothermal volumes of silicate glasses and melts to the combined ionic volumes of their chemical constituents. The relation is an extension of a relation that has already been established for crystalline oxides, silicates, alumosilicates, and other materials that have O2− as a constituent anion. The relation provides constraints on bond coordination, indicates pressure-induced changes in coordination in melts and glasses and interatomic distances, and quantifies the extent of transitory regions in pressure-induced coordination changes.
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Krztoń, Hanna J. "Quantitative Phase Analysis of Fly Ashes from Six Polish Power Stations." Solid State Phenomena 130 (December 2007): 277–80. http://dx.doi.org/10.4028/www.scientific.net/ssp.130.277.

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Application of the Rietveld method to quantitative phase analysis of fly ashes from Polish power stations is presented. The calculations of the fractions of crystalline components as well as non crystalline constituents have been done using SIROQUANT TM software. The power of the Rietveld refinement is shown when very small contents of minerals are detected and quantified.
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Huang, Yu-Chieh, Maxim Benjamin Gindele, Jennifer Knaus, Ashit Rao, and Denis Gebauer. "On mechanisms of mesocrystal formation: magnesium ions and water environments regulate the crystallization of amorphous minerals." CrystEngComm 20, no. 31 (2018): 4395–405. http://dx.doi.org/10.1039/c8ce00241j.

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Elucidating the emergence of crystalline superstructures from amorphous precursors, hydration environments and ionic constituents can guide transformation and structuration reactions towards distinct micro- and nano-structures.
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McCarthy, G. J., and J. K. Solem. "X-ray Diffraction Analysis of Fly Ash. II. Results." Advances in X-ray Analysis 34 (1990): 387–94. http://dx.doi.org/10.1154/s0376030800014701.

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AbstractA protocol for semi-quantitative XRD analysis of fly ash has been applied to 178 ashes in studies of the typical mineralogy of high-calcium and iow-calcium fly ash, the consistency of fly ash mineralogy from a typical power station, the partitioning of chemical constituents into crystalline phases, and the crystalline phases relevant to the use of fly ash in concrete.
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Luu Thi, Lan Anh, Duc Hieu Nguyen, Mateus Manuel Neto, Ngoc Trung Nguyen, and Thach Son Vo. "Characterization of Nanocrystalline Titania Thin Film Deposited by Spray Pyrolysis Technique." Advanced Materials Research 875-877 (February 2014): 49–53. http://dx.doi.org/10.4028/www.scientific.net/amr.875-877.49.

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Nanocrystalline titania (TiO2) thin films prepared by spray pyrolysis deposition on to the heated glass in a temperature range of TS = 350 ÷ 450oC. Analysis of optical transmission spectral of films reveals an optical band gap of about 3.2÷3.4 eV and the transmittance above 80% for TiO2 films with thickness of 0.8÷1.6 µm. X-ray diffraction (XRD) analysis demonstrates that the films are found of anatase phase in crystal structure. The AFM photographs show the nano-size of the constituents. The crystallize size and crystalline of the samples is discussed with respect to the film thickness and depo
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Ray, A. K. "Effects of chemical constituents on crystalline properties of ethylene ionomers." Journal of Thermal Analysis 46, no. 6 (1996): 1527–39. http://dx.doi.org/10.1007/bf01980759.

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Bankole, S. I., A. Akinmosin, T. Omeru, and H. E. Ibrahim. "Heavy Mineral Distribution in the Lokoja and Patti Formations, Southern Bida Basin, Nigeria: Implications for Provenance, Maturity and Transport History." Materials and Geoenvironment 66, no. 3 (2020): 185–97. http://dx.doi.org/10.2478/rmzmag-2019-0011.

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AbstractHeavy mineral component of 13 samples from the Lokoja and Patti Formations, Bida Basin have been studied for their textural characteristics, compositional abundance, maturity and provenance determinations. The suite of heavy minerals encountered is classified as opaque and non-opaque constituents. The non-opaque components include zircon, tourmaline, rutile, garnet, staurolite, epidote, kyanite, titanite, lawsonite, cassiterite, sillimanite, hornblende, hypersthene and andalusite. The assemblage is generally dominated by zircon and tourmaline in the two formations. The constituent heav
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Parra-Delgado, Hortensia, Rubén A. Toscano, Aída N. García-Argaez, and Mariano Martínez-Vázquez. "Chemical Constituents of Coutaportla ghiesbregthiana: Co-Crystallization of Two ent-Nor-Kaurene Diterpenes." Zeitschrift für Naturforschung B 60, no. 5 (2005): 548–54. http://dx.doi.org/10.1515/znb-2005-0512.

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The known nor-diterpene (16R)-ent-17-hydroxy-19-nor-kaur-4-en-3-one and the new norditerpene (16R)-ent-19-nor-kaur-4-en-3-oxo-17-oic acid were obtained as a crystalline mixture from roots of C. ghiesbregthiana. Their structures were deduced by spectroscopic means and confirmed by a X-ray diffraction study of the crystalline mixture. Additionally, ursolic and betulinic acids, skimmin, and sucrose were isolated. This is the first chemical study of a member of the Coutaportla genus.
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Book chapters on the topic "Crystalline Constituents"

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Nanzyo, Masami, and Hitoshi Kanno. "Non-crystalline Inorganic Constituents of Soil." In Inorganic Constituents in Soil. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1214-4_4.

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Verrecchia, Eric P., and Luca Trombino. "The Organization of Soil Fragments." In A Visual Atlas for Soil Micromorphologists. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67806-7_2.

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AbstractKubiëna (1938) was the first to introduce the concept of fabric in soil micromorphology, so this term has been used in soil micromorphology for a long time. The term “fabric” was initially applied to rocks by geologists and petrologists. This type of fabric is defined as the “factor of the texture of a crystalline rock which depends on the relative sizes, the shapes, and the arrangement of the component crystals” (Matthews and Boyer 1976). This definition has been adapted for soil micromorphology and its latest definition has been given by Bullock et al. (1985) as: “soil fabric deals w
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Viplava Prasad, U., B. Syamasunder, G. Anuradha, and J. Sree Kanth Kumar. "Chemical Examination of Morinda Pubescens var. pubescens. (Rubiaceae) and isolation of crystalline constituents." In Chemistry of Phytopotentials: Health, Energy and Environmental Perspectives. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-23394-4_15.

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Adagunodo, Theophilus Aanuoluwa, Adetunji Ayokunnu Adeniji, Ayobami Ismaila Ojoawo, and Godswill Emmanuel Akpan. "Review on Fluoride Constituents in Groundwater System of Shallow Crystalline Aquifers from Nigeria." In Recent Research on Environmental Earth Sciences, Geomorphology, Soil Science and Paleoenvironments. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-48754-5_23.

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Campos, Raquel P., Marana Soares, Karuppusamy Arunachalam, Suni Liu, Luciana Miyagusku, and Priscila Aiko Hiane. "Improving the Microbiological, Sensory, and Chemical Constituents of Stored Crystallized “Jenipapo” (Genipa americana L.), a Native Brazilian Fruit." In Pomotherapeutic Insights on Wild Edible Fruits. Springer Nature Singapore, 2025. https://doi.org/10.1007/978-981-96-0543-9_13.

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Maugin, Gerard A. "Different types of Crystals." In Nonlinear Waves in Elastic Crystals. Oxford University PressOxford, 1999. http://dx.doi.org/10.1093/oso/9780198534846.003.0001.

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Abstract This introductory chapter is descriptive in nature. It aims at defining all the ingredients of propagation of waves, which constitute the principal object of our study in this book. The common, in fact exact, view is the following one. Materials are classified as gases, liquids and solids, depending upon their state of aggregation and their ability to deform and flow. Thus, the binding interactions and the configurations of constituents in the material and their observed dynamics typically characterize the classification of materials. Based on their structure, solids can be classified
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Manjula, Dr R., and Dr J. Daisy Rani. "CRYSTALLINE CELLULOSE AS BIONANOCOMPOSITE FIBER FOR ANTIMICROBIAL PACKAGING APPLICATION." In Futuristic Trends in Chemical Material Sciences & Nano Technology Volume 3 Book 11. Iterative International Publishers, Selfypage Developers Pvt Ltd, 2024. http://dx.doi.org/10.58532/v3becs11p2ch4.

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Over the decades in the medicinal field, biopolymers derived from natural resources have found tremendous applications in various fields such as medical, pharmaceutical, food packaging applications owing to their unique characteristics. Significantly, cellulose reinforced polymeric matrix containing smaller size fibers exhibits enhanced physical, mechanical and biological properties in contrast to the pristine polymeric matrix having greater pore size fibers. In this present study, cellulose was extracted from the crop residue of rice husk waste using a feasible chemical treatment. The surface
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Atkins, Peter, Julio de Paula, and James Keeler. "Crystal structure." In Atkins’ Physical Chemistry. Oxford University Press, 2022. http://dx.doi.org/10.1093/hesc/9780198847816.003.0081.

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This chapter discusses the characteristic feature of a crystal, which is the regular arrangement of its constituents. It shows how the regularity of a crystal described in terms of the symmetry of the arrangement and explains how its the arrangements are described quantitatively. It also considers the importance of crystalline solids in many technologies and explores microscopic structures of a crystal in order to account for their mechanical, electrical, optical, and magnetic properties. The chapter analyses the regular arrangement of the atoms in periodic crystals that can be described in te
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Bazargan, Maryam, Nahid Lotfian, and Masoud Mirzaei. "Chemistry of Metal–Organic Frameworks." In Metal–Organic Frameworks in Analytical Chemistry. The Royal Society of Chemistry, 2023. http://dx.doi.org/10.1039/bk9781839167485-00045.

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Metal–organic frameworks (MOFs), which are a class of porous crystalline materials formed by the self-assembly of organic and inorganic components, have received widespread interest over the past decades. Due to their extraordinarily high porosity, adjustable pore sizes, controllable surface functionality, and potential scalability, MOFs have great potential for application in areas such as gas capture and storage, sorbents, catalysis, and drug delivery. The judicious choice of both the organic and inorganic constituents of MOFs enables vast opportunities for framework design, leading to mater
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Cobongela, S. Z. Z. "Enzymes Involved in Plastic Degradation." In Degradation of Plastics. m, 2021. http://dx.doi.org/10.21741/9781644901335-4.

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The global increase in production of plastic and accumulation in the environment is becoming a major concern especially to the aquatic life. This is due to the natural resistance of plastic to both physical and chemical degradation. Lack of biodegradability of plastic polymers is linked to, amongst other factors, the mobility of the polymers in the crystalline part of the polyesters as they are responsible for enzyme interaction. There are significantly few catabolic enzymes that are active in breaking down polyesters which are the constituents of plastic. The synthetic polymers widely used in
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Conference papers on the topic "Crystalline Constituents"

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Karnati, Manikanth, Adline S. Rebello, Nandana B, Indira Govindaraju, Bharath Prasad AS, and Nirmal Mazumder. "Spectroscopic Investigation of Physico-Chemical Characteristics of Rice Varieties." In JSAP-Optica Joint Symposia. Optica Publishing Group, 2024. https://doi.org/10.1364/jsapo.2024.19a_p08_5.

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Rice (Oryza sativa L.), a versatile grain, is a dietary staple enjoyed worldwide, cherished for its culinary adaptability and nutritional richness. Its widespread consumption underscores its integral role in diverse cuisines and as a vital source of sustenance for countless cultures. As a significant source of carbohydrates, rice production has been rising, reaching 510.6 million tonnes in 2017 (FAO, 2018) Starch, a prevalent carbohydrate in rice, comprises two primary constituents: amylose and 85 amylopectin. Long linear chains with limited branching characterize amylose, whereas amylopectin
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Aoyama, Takayuki, Mari Aoki, and Isao Sumita. "Effects of constituents in paste on low light performance of silicon solar cells: A case study of aluminum." In PROCEEDINGS OF THE 9TH WORKSHOP ON METALLIZATION AND INTERCONNECTION FOR CRYSTALLINE SILICON SOLAR CELLS. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0056075.

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Wiederrecht, Gary P., Thomas P. Dougherty, and Keith A. Nelson. "Impulsive Stimulated Raman Scattering Study of Soft Mode Dynamics in Ferroelectric Crystals." In International Conference on Ultrafast Phenomena. Optica Publishing Group, 1992. http://dx.doi.org/10.1364/up.1992.tha5.

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Soft Modes, ISRS, and Perovskite Ferroelectrics The dynamics of cooperative ordering in crystals near structural phase transitions have long been elusive. Most picosecond and femtosecond time-resolved measurements have involved rapid laser heating of a sample whose phase transition (e.g. melting) dynamics are then monitored1. In this case many lattice degrees of freedom are excited, and little information is provided about the roles or dynamics of particular lattice motions. In structural phase transitions, the order parameter is described by one or a very few specific ("soft") lattice modes w
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Johnston, Paul. "Spectral Mismatch Correlated With Air Mass Under Varying Clear Sky Conditions for Photovoltaic Facilities With Crystalline-Silicon Modules: Solar Spectral Effects — An EPC Contractor’s Perspective." In ASME 2014 Power Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/power2014-32200.

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Photovoltaic utility-scale grid-connected power generation facilities have performance guarantee bases that often include a reference solar spectrum. EPC contractors are obligated to correct tested performance for solar spectrum, as is done for irradiance and cell temperature, to judge whether contractual performance guarantees have been satisfied. Air mass correlated with solar spectral irradiance offers a convenient way of accomplishing this. This paper offers an improvement in the versatility and accuracy of accounting for spectral effects in this manner. The effects on the spectral composi
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Buryachenko, Valeriy A. "Generalized Method of Effective Field in Linear Peridynamic Micromechanics of Random Structure Composites." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-24574.

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Abstract A statistically homogeneous random matrix medium with the bond-based peridynamic properties of constituents is considered. For the media subjected to remote homogeneous volumetric boundary loading, one proved that the effective behavior of this media is governing by conventional effective constitutive equation which is the same as for the local elasticity theory. The average is performed over the surface of the extended inclusion phase rather than over an entire space. Any spatial derivatives of displacement fields are not required. The basic hypotheses of locally elastic micromechani
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Obuebite, A., and O. O. Okwonna. "Preliminary Assessment of Terminalia Mantaly Gum Exudate as a GreenScale Inhibitor." In SPE Nigeria Annual International Conference and Exhibition. SPE, 2024. http://dx.doi.org/10.2118/221793-ms.

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Abstract The study explores the potential of Terminalia mantaly gum as a sustainable, effective inhibitor of barium sulfate scale. The use of green materials has garnered attention as a promising natural compound for industrial processes. Scale formation, a pervasive issue in oil production and water treatment, leads to reduced efficiency and increased maintenance costscaused by blockages in pipelines, oil wells etc. However, the use of scale inhibitors has been used for the control of various scale types including barium sulfate scale. Terminalia mantaly gum, a natural polysaccharide, with it
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Nishchenko, M. M., S. P. Likhtorovich, V. I. Patoka, and N. A. Shevchenko. "Phase - Formation and Mass - Transfer in Alloys under Micro - Floating - Zone Crystallization Induced by Laser Melting of the Surface." In The European Conference on Lasers and Electro-Optics. Optica Publishing Group, 1996. http://dx.doi.org/10.1364/cleo_europe.1996.cwf66.

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Under the pulsed laser melting of thin surface layer the velocity of solidification front reaches larger values comparable to those of the atoms diffusion rate in the melt. This results in enhancement of the kinetic effects such as the “capture” of the impurity and alloy’s constituent atoms, segregation suppression, “diffusionless” solidification, etc. As a consequence, the heterogeneous non - equilibrium structure is formed in the surface layer which consists of the stable, metastable crystalline or amorphous phases with high defect concentration in particular, structural vacancies specifying
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Jin, Yuansheng, He Yang, Feng Wang, C. Minfray, and Shenghua Li. "Phase Structure and Lubricity of In-Situ Generated Protective Layer on Worn Metal Surfaces in Presence of Mg6Si4O10(OH)8." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63927.

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A mechanochemical reconditioner package has been investigated in our laboratory which could be used to generate an in situ protective layer on worn metal surfaces as a result of mechanochemical reactions between worn tribosurfaces, wear debris and a special reconditioner formulation. The main constituent in the reconditioner formulation chemistry is magnesium silicate hydroxide, Mg6(Si4O10)(OH)8. HRTEM analyses have displayed that the protective layer consists mainly of cementite nanocrystals with crystalline anisotropy. Nanoparticles of magnet iron oxide (Fe3O4) and iron peroxide (FeOOH) are
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Dong, Jinping, Allison Hubel, John C. Bischof, and Alptekin Aksan. "Use of Raman Microspectroscopy to Study Partioning of Molecules During Freeze-Processing of Protein Solutions." In ASME 2008 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2008. http://dx.doi.org/10.1115/sbc2008-193052.

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Biostabilization processes, based on desiccation, cooling or freezing, are surface-induced and thus are inevitably governed by scale-dependent kinetic constraints. During processing, these kinetic constraints induce heterogeneity (solute, and solvent concentration gradients, thermal gradients, and eventually, phase separation in the medium). During freezing, ice crystallization induces thermal (due to latent heat release), and concentration gradients (due to solute rejection) causing phase separation in the medium (i.e., formation of regions at different thermodynamic states). For example, dur
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Li, Chun-Teh, Yizhang Yang, Sadegh M. Sadeghipour, and Mehdi Asheghi. "Thermal Conductivity Measurement of the ZnS-SiO2 Dielectric Films for Optical Data Storage Applications." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-62150.

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The amorphous/crystalline phase formation during writing or erasure of the written marks, in the rewritable phase change (PC) optical recording media, is controlled by the temperature distribution in the media and its variation with time. Temperature distribution, on the other hand, strongly depends on the thermal properties of its constituent layers in particular the ZnS-SiO2 dielectric layer that separates the phase change media from the substrate and aluminum heat sink. The reported values for the thermal conductivity of thin dielectric layers are however limited in the literature. In this
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Reports on the topic "Crystalline Constituents"

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Barnes, Eftihia, Jennifer Jefcoat, Erik Alberts, et al. Synthesis and characterization of biological nanomaterial/poly(vinylidene fluoride) composites. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/42132.

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The properties of composite materials are strongly influenced by both the physical and chemical properties of their individual constituents, as well as the interactions between them. For nanocomposites, the incorporation of nano-sized dopants inside a host material matrix can lead to significant improvements in mechanical strength, toughness, thermal or electrical conductivity, etc. In this work, the effect of cellulose nanofibrils on the structure and mechanical properties of cellulose nanofibril poly(vinylidene fluoride) (PVDF) composite films was investigated. Cellulose is one of the most a
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