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Search results for: x-ray diffraction analysis
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</div> </nav> </div> </header> <main> <div class="container mt-4"> <div class="row"> <div class="col-md-9 mx-auto"> <form method="get" action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="x-ray diffraction analysis"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 28587</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: x-ray diffraction analysis</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28557</span> Internal Stresses and Structural Evolutions in Zr Alloys during Oxidation at High Temperature and Subsequent Cooling</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Raphaelle%20Guillou">Raphaelle Guillou</a>, <a href="https://publications.waset.org/abstracts/search?q=Matthieu%20Le%20Saux"> Matthieu Le Saux</a>, <a href="https://publications.waset.org/abstracts/search?q=Jean-Christophe%20Brachet"> Jean-Christophe Brachet</a>, <a href="https://publications.waset.org/abstracts/search?q=Thomas%20Guilbert"> Thomas Guilbert</a>, <a href="https://publications.waset.org/abstracts/search?q=Elodie%20Rouesne"> Elodie Rouesne</a>, <a href="https://publications.waset.org/abstracts/search?q=Denis%20Menut"> Denis Menut</a>, <a href="https://publications.waset.org/abstracts/search?q=Caroline%20Toffolon-Masclet"> Caroline Toffolon-Masclet</a>, <a href="https://publications.waset.org/abstracts/search?q=Dominique%20Thiaudiere"> Dominique Thiaudiere</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In some hypothetical accidental situations, such as during a Loss Of Coolant Accident (LOCA) in pressurized water reactors, fuel cladding tubes made of zirconium alloys can be exposed for a few minutes to steam at High Temperature (HT up to 1200°C) before being cooled and then quenched in water. Under LOCA-like conditions, the cladding undergoes a number of metallurgical changes (phase transformations, oxygen diffusion and growth of an oxide layer...) and is consequently submitted to internal stresses whose state evolves during the transient. These stresses can have an effect on the oxide structure and the oxidation kinetics of the material. They evolve during cooling, owing to differences between the thermal expansion coefficients of the various phases and phase transformations of the metal and the oxide. These stresses may result in the failure of the cladding during quenching, once the material is embrittled by oxidation. In order to progress in the evaluation of these internal stresses, X-ray diffraction experiments were performed in-situ under synchrotron radiation during HT oxidation and subsequent cooling on Zircaloy-4 sheet samples. First, structural evolutions, such as phase transformations, have been studied as a function of temperature for both the oxide layer and the metallic substrate. Then, internal stresses generated within the material oxidized at temperatures between 700 and 900°C have been evaluated thanks to the 2θ diffraction peak position shift measured during the in-situ experiments. Electron backscatter diffraction (EBSD) analysis was performed on the samples after cooling in order to characterize their crystallographic texture. Furthermore, macroscopic strains induced by oxidation in the conditions investigated during the in-situ X-ray diffraction experiments were measured in-situ in a dilatometer. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=APRP" title="APRP">APRP</a>, <a href="https://publications.waset.org/abstracts/search?q=stains%20measurements" title=" stains measurements"> stains measurements</a>, <a href="https://publications.waset.org/abstracts/search?q=synchrotron%20diffraction" title=" synchrotron diffraction"> synchrotron diffraction</a>, <a href="https://publications.waset.org/abstracts/search?q=zirconium%20allows" title=" zirconium allows"> zirconium allows</a> </p> <a href="https://publications.waset.org/abstracts/55439/internal-stresses-and-structural-evolutions-in-zr-alloys-during-oxidation-at-high-temperature-and-subsequent-cooling" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/55439.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">309</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28556</span> Study of Error Analysis and Sources of Uncertainty in the Measurement of Residual Stresses by the X-Ray Diffraction</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=E.%20T.%20Carvalho%20Filho">E. T. Carvalho Filho</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20T.%20N.%20Medeiros"> J. T. N. Medeiros</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20G.%20Martinez"> L. G. Martinez</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Residual stresses are self equilibrating in a rigid body that acts on the microstructure of the material without application of an external load. They are elastic stresses and can be induced by mechanical, thermal and chemical processes causing a deformation gradient in the crystal lattice favoring premature failure in mechanicals components. The search for measurements with good reliability has been of great importance for the manufacturing industries. Several methods are able to quantify these stresses according to physical principles and the response of the mechanical behavior of the material. The diffraction X-ray technique is one of the most sensitive techniques for small variations of the crystalline lattice since the X-ray beam interacts with the interplanar distance. Being very sensitive technique is also susceptible to variations in measurements requiring a study of the factors that influence the final result of the measurement. Instrumental, operational factors, form deviations of the samples and geometry of analyzes are some variables that need to be considered and analyzed in order for the true measurement. The aim of this work is to analyze the sources of errors inherent to the residual stress measurement process by X-ray diffraction technique making an interlaboratory comparison to verify the reproducibility of the measurements. In this work, two specimens were machined, differing from each other by the surface finishing: grinding and polishing. Additionally, iron powder with particle size less than 45 µm was selected in order to be a reference (as recommended by ASTM E915 standard) for the tests. To verify the deviations caused by the equipment, those specimens were positioned and with the same analysis condition, seven measurements were carried out at 11Ψ tilts. To verify sample positioning errors, seven measurements were performed by positioning the sample at each measurement. To check geometry errors, measurements were repeated for the geometry and Bragg Brentano parallel beams. In order to verify the reproducibility of the method, the measurements were performed in two different laboratories and equipments. The results were statistically worked out and the quantification of the errors. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=residual%20stress" title="residual stress">residual stress</a>, <a href="https://publications.waset.org/abstracts/search?q=x-ray%20diffraction" title=" x-ray diffraction"> x-ray diffraction</a>, <a href="https://publications.waset.org/abstracts/search?q=repeatability" title=" repeatability"> repeatability</a>, <a href="https://publications.waset.org/abstracts/search?q=reproducibility" title=" reproducibility"> reproducibility</a>, <a href="https://publications.waset.org/abstracts/search?q=error%20analysis" title=" error analysis"> error analysis</a> </p> <a href="https://publications.waset.org/abstracts/75093/study-of-error-analysis-and-sources-of-uncertainty-in-the-measurement-of-residual-stresses-by-the-x-ray-diffraction" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/75093.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">181</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28555</span> Synthesis, Characterization and Electrical Studies of Solid Polymer Electrolyte (1-x) PANI-KAg₄I₅.xAl₂O₃</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rafiuddin">Rafiuddin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Solid polymer electrolytes have emerged as an area of interest in the field of solid state chemistry owing to their facile and cost-effective synthesis and number of applications in different areas of chemistry, extending over a wide range of temperatures. In the present work, polymer composite solid electrolyte comprising of Polyaniline (PANI) as polymer and potassium silver iodide (KAg4I5) using alumina (Al2O3) of different compositions having the formula (1-x) PANI- KAg4I5. x Al2O3 with x ranging from 0.0 to 0.5 was prepared by solid state reaction method. The structural elucidation and characterization was done by X- Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Thermogravimetric- Differential Thermal Analysis (TG-DTA) and Impedance Spectroscopy. The thermal analysis shows a phase transition at 147°C attributed to β-α phase transition of AgI due to the disproportionation of KAg4I5 to AgI and KAg2I3 at temperatures higher than 36°C. The X Ray diffraction analysis also confirms the presence of both AgI and KAg2I3 in the samples. The conductivities recorded over a temperature range of 40-250° C lie in the range of 10-1 to 10-3 S cm-1. Maximum conductivity was seen in the compositon x = 0.4 i.e. 1.84 × 10-2 Scm-1 at 313 K and 1.38 × 10-1 Scm-1 at 513 K, with a minimum activation energy of 0.14 eV. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=polymer%20solid%20electrolytes" title="polymer solid electrolytes">polymer solid electrolytes</a>, <a href="https://publications.waset.org/abstracts/search?q=XRD" title=" XRD"> XRD</a>, <a href="https://publications.waset.org/abstracts/search?q=DTA" title=" DTA"> DTA</a>, <a href="https://publications.waset.org/abstracts/search?q=electrical%20conductivity" title=" electrical conductivity"> electrical conductivity</a>, <a href="https://publications.waset.org/abstracts/search?q=impedance%20spectroscopy" title=" impedance spectroscopy"> impedance spectroscopy</a> </p> <a href="https://publications.waset.org/abstracts/69531/synthesis-characterization-and-electrical-studies-of-solid-polymer-electrolyte-1-x-pani-kag4i5xal2o3" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/69531.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">302</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28554</span> Conducting Glove Leathers Prepared through in-situ Polymerization of Pyrrole</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Wegene%20Demisie%20Jima">Wegene Demisie Jima</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Leather is a durable and flexible material used for various purposes including clothing, footwear, upholstery and gloves. However, the use of leather for smart product applications is a challenge since it is electrically insulating material. Here, we report a simple method to produce conducting glove leathers using an in-situ polymerization of pyrrole. The concentrations of pyrrole, ferric chloride and anthraquinone-2-sulfonic acid sodium salt monohydrate were optimized to produce maximum conductivity in the treated leathers. The coating of polypyrrole in the treated leathers was probed using FT-IR, X-ray diffraction and electron microscopic analysis. FTIR confirms that the formation of polypyrrole on the leather surface as well as presence of prominent N-C stretching band. X-ray diffraction analysis suggests para-crystallinity in the PPy-treated leathers.We further demonstrate that the treated leathers, with maximum conductivity of 7.4 S/cm, can be used for making conductive gloves for operating touch-screen devices apart from other smart product applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=electrical%20conductivity" title="electrical conductivity">electrical conductivity</a>, <a href="https://publications.waset.org/abstracts/search?q=in-situ%20polymerization" title=" in-situ polymerization"> in-situ polymerization</a>, <a href="https://publications.waset.org/abstracts/search?q=pyrrole" title=" pyrrole"> pyrrole</a>, <a href="https://publications.waset.org/abstracts/search?q=smart%20product" title=" smart product"> smart product</a> </p> <a href="https://publications.waset.org/abstracts/84514/conducting-glove-leathers-prepared-through-in-situ-polymerization-of-pyrrole" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/84514.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">193</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28553</span> An Investigation of New Phase Diagram of Ag2SO4-CaSO4</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ravi%20V.%20Joat">Ravi V. Joat</a>, <a href="https://publications.waset.org/abstracts/search?q=Pravin%20S.%20Bodke"> Pravin S. Bodke</a>, <a href="https://publications.waset.org/abstracts/search?q=Shradha%20S.%20Binani"> Shradha S. Binani</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20S.%20Wasnik"> S. S. Wasnik </a> </p> <p class="card-text"><strong>Abstract:</strong></p> A phase diagram of the Ag2SO4 - CaSO4 (Silver sulphate – Calcium Sulphate) binaries system using conductivity, XRD (X-Ray Diffraction Technique) and DTA (Differential Thermal Analysis) data is constructed. The eutectic reaction (liquid -» a-Ag2SO4 + CaSO4) is observed at 10 mole% CaSO4 and 645°C. Room temperature solid solubility limit up to 5.27 mole % of Ca 2+ in Ag2SO4 is set using X-ray powder diffraction and scanning electron microscopy results. All compositions beyond this limit are two-phase mixtures below and above the transition temperature (≈ 416°C). The bulk conductivity, obtained following complex impedance spectroscopy, is found decreasing with increase in CaSO4 content. Amongst other binary compositions, the 80AgSO4-20CaSO4 gave improved sinterability/packing density. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=phase%20diagram" title="phase diagram">phase diagram</a>, <a href="https://publications.waset.org/abstracts/search?q=Ag2SO4-CaSO4%20binaries%20system" title=" Ag2SO4-CaSO4 binaries system"> Ag2SO4-CaSO4 binaries system</a>, <a href="https://publications.waset.org/abstracts/search?q=conductivity" title=" conductivity"> conductivity</a>, <a href="https://publications.waset.org/abstracts/search?q=XRD" title=" XRD"> XRD</a>, <a href="https://publications.waset.org/abstracts/search?q=DTA" title=" DTA"> DTA</a> </p> <a href="https://publications.waset.org/abstracts/9345/an-investigation-of-new-phase-diagram-of-ag2so4-caso4" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/9345.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">625</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28552</span> A Supramolecular Cocrystal of 2-Amino-4-Chloro-6-Methylpyrimidine with 4-Methylbenzoic Acid: Synthesis, Structural Determinations and Quantum Chemical Investigations</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nuridayanti%20Che%20Khalib">Nuridayanti Che Khalib</a>, <a href="https://publications.waset.org/abstracts/search?q=Kaliyaperumal%20Thanigaimani"> Kaliyaperumal Thanigaimani</a>, <a href="https://publications.waset.org/abstracts/search?q=Suhana%20Arshad"> Suhana Arshad</a>, <a href="https://publications.waset.org/abstracts/search?q=Ibrahim%20Abdul%20Razak"> Ibrahim Abdul Razak</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The 1:1 co-crystal of 2-amino-4-chloro-6-methylpyrimidine (2A4C6MP) with 4-methylbenzoic acid (4MBA) (I) has been prepared by slow evaporation method in methanol, which was crystallized in monoclinic C2/c space group, Z = 8, a = 28.431 (2) Å, b = 7.3098 (5) Å, c = 14.2622 (10) Å, and β = 109.618 (3)°. The presence of unionized –COOH functional group in co-crystal I was identified both by spectral methods (1H and 13C NMR, FTIR) and X-ray diffraction structural analysis. The 2A4C6MP molecule interact with the carboxylic group of the respective 4MBA molecule through N—H⋯O and O—H⋯N hydrogen bonds, forming a cyclic hydrogen –bonded motif R22(8). The crystal structure was stabilized by Npyrimidine-H⋯O=C and C=O-H⋯Npyrimidine types hydrogen bonding interactions. Theoretical investigations have been computed by HF and density function (B3LYP) method with 6-311+G(d,p) basis set. The vibrational frequencies together with 1H and 13C NMR chemical shifts have been calculated on the fully optimized geometry of co-crystal I. Theoretical calculations are in good agreement with the experimental results. Solvent-free formation of this co-crystal I is confirmed by powder X-ray diffraction analysis. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=supramolecular%20co-crystal" title="supramolecular co-crystal">supramolecular co-crystal</a>, <a href="https://publications.waset.org/abstracts/search?q=2-amino-4-chloro-6-methylpyrimidine" title=" 2-amino-4-chloro-6-methylpyrimidine"> 2-amino-4-chloro-6-methylpyrimidine</a>, <a href="https://publications.waset.org/abstracts/search?q=Harthree-Fock%20and%20DFT%20studies" title=" Harthree-Fock and DFT studies"> Harthree-Fock and DFT studies</a>, <a href="https://publications.waset.org/abstracts/search?q=spectroscopic%20analysis" title=" spectroscopic analysis"> spectroscopic analysis</a> </p> <a href="https://publications.waset.org/abstracts/33333/a-supramolecular-cocrystal-of-2-amino-4-chloro-6-methylpyrimidine-with-4-methylbenzoic-acid-synthesis-structural-determinations-and-quantum-chemical-investigations" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33333.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">309</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28551</span> X-Ray and DFT Electrostatics Parameters Determination of a Coumarin Derivative Compound C17H13NO3</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Y.%20Megrous">Y. Megrous</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Chouaih"> A. Chouaih</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Hamzaoui"> F. Hamzaoui </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The crystal structure of 4-Methyl-7-(salicylideneamino)coumarin C17H13NO3has been determined using X-ray diffraction to establish the configuration and stereochemistry of the molecule. This crystal is characterized by its nolinear activity. The molecular electron charge density distribution of the title compound is described accurately using the multipolar model of Hansen and Coppens. The net atomic charge and the molecular dipole moment in-crystal have been determined in order to understand the nature of inter-and intramolecular charge transfer. The study present the thermal motion and the structural analysis obtained from the least-square refinement on F2,this study has also allowed us to determine the electrostatic potential and therefore locate the electropositive part and the electronegative part in molecular scale of the title compound. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=electron%20charge%20density" title="electron charge density">electron charge density</a>, <a href="https://publications.waset.org/abstracts/search?q=net%20atomic%20charge" title=" net atomic charge"> net atomic charge</a>, <a href="https://publications.waset.org/abstracts/search?q=molecular%20dipole%20moment" title=" molecular dipole moment"> molecular dipole moment</a>, <a href="https://publications.waset.org/abstracts/search?q=X-ray%20diffraction" title=" X-ray diffraction"> X-ray diffraction</a> </p> <a href="https://publications.waset.org/abstracts/24669/x-ray-and-dft-electrostatics-parameters-determination-of-a-coumarin-derivative-compound-c17h13no3" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/24669.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">456</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28550</span> Interface Analysis of Annealed Al/Cu Cladded Sheet</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Joon%20Ho%20Kim">Joon Ho Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Tae%20Kwon%20Ha"> Tae Kwon Ha</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Effect of aging treatment on microstructural aspects of interfacial layers of the Cu/Al clad sheet produced by Differential Speed Rolling (DSR) process were studied by Electron Back Scattered Diffraction (EBSD). Clad sheet of Al/Cu has been fabricated by using DSR, which caused severe shear deformation between Al and Cu plate to easily bond to each other. Rolling was carried out at 100°C with speed ratio of 2, in which the total thickness reduction was 45%. Interface layers of clad sheet were analyzed by EBSD after subsequent annealing at 400°C for 30 to 120 min. With increasing annealing time, thickness of interface layer and fraction of high angle grain boundary were increased and average grain size was decreased. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aluminium%2Fcopper%20clad%20sheet" title="aluminium/copper clad sheet">aluminium/copper clad sheet</a>, <a href="https://publications.waset.org/abstracts/search?q=differential%20speed%20rolling" title=" differential speed rolling"> differential speed rolling</a>, <a href="https://publications.waset.org/abstracts/search?q=interface%20layer" title=" interface layer"> interface layer</a>, <a href="https://publications.waset.org/abstracts/search?q=microstructure" title=" microstructure"> microstructure</a>, <a href="https://publications.waset.org/abstracts/search?q=annealing" title=" annealing"> annealing</a>, <a href="https://publications.waset.org/abstracts/search?q=electron%20back%20scattered%20diffraction" title=" electron back scattered diffraction"> electron back scattered diffraction</a> </p> <a href="https://publications.waset.org/abstracts/7126/interface-analysis-of-annealed-alcu-cladded-sheet" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/7126.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">366</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28549</span> Basic Evaluation for Polyetherimide Membrane Using Spectroscopy Techniques </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hanan%20Alenezi">Hanan Alenezi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Membrane performance depends on the kind of solvent used in preparation. A membrane made by Polyetherimide (PEI) was evaluated for gas separation using X-Ray Diffraction (XRD), Scanning electron microscope (SEM), and Energy Dispersive X-Ray Spectroscopy (EDS). The purity and the thickness are detected to evaluate the membrane in order to optimize PEI membrane preparation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Energy%20Dispersive%20X-Ray%20Spectroscopy%20%28EDS%29" title="Energy Dispersive X-Ray Spectroscopy (EDS)">Energy Dispersive X-Ray Spectroscopy (EDS)</a>, <a href="https://publications.waset.org/abstracts/search?q=Membrane" title=" Membrane"> Membrane</a>, <a href="https://publications.waset.org/abstracts/search?q=Polyetherimide%20PEI" title=" Polyetherimide PEI"> Polyetherimide PEI</a>, <a href="https://publications.waset.org/abstracts/search?q=Scanning%20electron%20microscope%20%28SEM%29" title=" Scanning electron microscope (SEM)"> Scanning electron microscope (SEM)</a>, <a href="https://publications.waset.org/abstracts/search?q=Solvent" title=" Solvent"> Solvent</a>, <a href="https://publications.waset.org/abstracts/search?q=X-Ray%20Diffraction%20%28XRD%29" title=" X-Ray Diffraction (XRD)"> X-Ray Diffraction (XRD)</a> </p> <a href="https://publications.waset.org/abstracts/120499/basic-evaluation-for-polyetherimide-membrane-using-spectroscopy-techniques" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/120499.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">183</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28548</span> Deconvolution of Anomalous Fast Fourier Transform Patterns for Tin Sulfide</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=I.%20Shuro">I. Shuro</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The crystal structure of Tin Sulfide prepared by certain chemical methods is investigated using High-Resolution Transmission Electron Microscopy (HRTEM), Scanning Electron Microscopy (SEM), and X-ray diffraction (XRD) methods. An anomalous HRTEM Fast Fourier Transform (FFT) exhibited a central scatter of diffraction spots, which is surrounded by secondary clusters of spots arranged in a hexagonal pattern around the central cluster was observed. FFT analysis has revealed a long lattice parameter and mostly viewed along a hexagonal axis where there many columns of atoms slightly displaced from one another. This FFT analysis has revealed that the metal sulfide has a long-range order interwoven chain of atoms in its crystal structure. The observed crystalline structure is inconsistent with commonly observed FFT patterns of chemically synthesized Tin Sulfide nanocrystals and thin films. SEM analysis showed the morphology of a myriad of multi-shaped crystals ranging from hexagonal, cubic, and spherical micro to nanostructured crystals. This study also investigates the presence of quasi-crystals as reflected by the presence of mixed local symmetries. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fast%20fourier%20transform" title="fast fourier transform">fast fourier transform</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20resolution%20transmission%20electron%20microscopy" title=" high resolution transmission electron microscopy"> high resolution transmission electron microscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=tin%20sulfide" title=" tin sulfide"> tin sulfide</a>, <a href="https://publications.waset.org/abstracts/search?q=crystalline%20structure" title=" crystalline structure"> crystalline structure</a> </p> <a href="https://publications.waset.org/abstracts/124851/deconvolution-of-anomalous-fast-fourier-transform-patterns-for-tin-sulfide" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/124851.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">144</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28547</span> Development of a Direct Immunoassay for Human Ferritin Using Diffraction-Based Sensing Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Joel%20Ballesteros">Joel Ballesteros</a>, <a href="https://publications.waset.org/abstracts/search?q=Harriet%20Jane%20Caleja"> Harriet Jane Caleja</a>, <a href="https://publications.waset.org/abstracts/search?q=Florian%20Del%20Mundo"> Florian Del Mundo</a>, <a href="https://publications.waset.org/abstracts/search?q=Cherrie%20Pascual"> Cherrie Pascual</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Diffraction-based sensing was utilized in the quantification of human ferritin in blood serum to provide an alternative to label-based immunoassays currently used in clinical diagnostics and researches. The diffraction intensity was measured by the diffractive optics technology or dotLab™ system. Two methods were evaluated in this study: direct immunoassay and direct sandwich immunoassay. In the direct immunoassay, human ferritin was captured by human ferritin antibodies immobilized on an avidin-coated sensor while the direct sandwich immunoassay had an additional step for the binding of a detector human ferritin antibody on the analyte complex. Both methods were repeatable with coefficient of variation values below 15%. The direct sandwich immunoassay had a linear response from 10 to 500 ng/mL which is wider than the 100-500 ng/mL of the direct immunoassay. The direct sandwich immunoassay also has a higher calibration sensitivity with value 0.002 Diffractive Intensity (ng mL-1)-1) compared to the 0.004 Diffractive Intensity (ng mL-1)-1 of the direct immunoassay. The limit of detection and limit of quantification values of the direct immunoassay were found to be 29 ng/mL and 98 ng/mL, respectively, while the direct sandwich immunoassay has a limit of detection (LOD) of 2.5 ng/mL and a limit of quantification (LOQ) of 8.2 ng/mL. In terms of accuracy, the direct immunoassay had a percent recovery of 88.8-93.0% in PBS while the direct sandwich immunoassay had 94.1 to 97.2%. Based on the results, the direct sandwich immunoassay is a better diffraction-based immunoassay in terms of accuracy, LOD, LOQ, linear range, and sensitivity. The direct sandwich immunoassay was utilized in the determination of human ferritin in blood serum and the results are validated by Chemiluminescent Magnetic Immunoassay (CMIA). The calculated Pearson correlation coefficient was 0.995 and the p-values of the paired-sample t-test were less than 0.5 which show that the results of the direct sandwich immunoassay was comparable to that of CMIA and could be utilized as an alternative analytical method. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biosensor" title="biosensor">biosensor</a>, <a href="https://publications.waset.org/abstracts/search?q=diffraction" title=" diffraction"> diffraction</a>, <a href="https://publications.waset.org/abstracts/search?q=ferritin" title=" ferritin"> ferritin</a>, <a href="https://publications.waset.org/abstracts/search?q=immunoassay" title=" immunoassay"> immunoassay</a> </p> <a href="https://publications.waset.org/abstracts/62082/development-of-a-direct-immunoassay-for-human-ferritin-using-diffraction-based-sensing-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/62082.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">354</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28546</span> Iron Doped Biomaterial Calcium Borate: Synthesis and Characterization</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=G.%20%C3%87elik%20G%C3%BCl">G. Çelik Gül</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Kurtulu%C5%9F"> F. Kurtuluş</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Colemanite is the most common borate mineral, and the main source of the boron required by plants, human, and earth. Transition metals exhibit optical and physical properties such as; non-linear optical character, structural diversity, thermal stability, long cycle life and luminescent radiation. The doping of colemanite with a transition metal, bring it very interesting and attractive properties which make them applicable in industry. Iron doped calcium borate was synthesized by conventional solid state method at 1200 °C for 12 h with a systematic pathway. X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy/energy dispersive analyze (SEM/EDS) were used to characterize structural and morphological properties. Also, thermal properties were recorded by thermogravimetric-differential thermal analysis (TG/DTA). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=colemanite" title="colemanite">colemanite</a>, <a href="https://publications.waset.org/abstracts/search?q=conventional%20synthesis" title=" conventional synthesis"> conventional synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=powder%20x-ray%20diffraction" title=" powder x-ray diffraction"> powder x-ray diffraction</a>, <a href="https://publications.waset.org/abstracts/search?q=borates" title=" borates"> borates</a> </p> <a href="https://publications.waset.org/abstracts/60835/iron-doped-biomaterial-calcium-borate-synthesis-and-characterization" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/60835.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">332</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28545</span> Study of the Morphological and Optical Properties of Nanometric NiO</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nassima%20Hamzaoui">Nassima Hamzaoui</a>, <a href="https://publications.waset.org/abstracts/search?q=Mostefa%20Ghamnia"> Mostefa Ghamnia</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nanoscale thin films of pure and Mn-doped Nickel oxide (NiO) were prepared by dissolving nickel chloride hexahydrate (NiCl2, 6H2O) and manganese chloride tetrahydrate (MnCl2,4H2O) under experimental conditions. The resulting solution was stirred at room temperature for 30 OC minutes in order to obtain homogeneity. The solution was sprayed onto heated glass substrates. The films obtained were characterized by X-ray diffraction to verify crystallinity. Atomic force microscopy (AFM) reveals surface topographical structure. UV-visible spectroscopy shows good transparency of the NiO layers. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=films" title="films">films</a>, <a href="https://publications.waset.org/abstracts/search?q=NiO" title=" NiO"> NiO</a>, <a href="https://publications.waset.org/abstracts/search?q=AFM" title=" AFM"> AFM</a>, <a href="https://publications.waset.org/abstracts/search?q=X-ray%20diffraction" title=" X-ray diffraction"> X-ray diffraction</a> </p> <a href="https://publications.waset.org/abstracts/182349/study-of-the-morphological-and-optical-properties-of-nanometric-nio" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/182349.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">60</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28544</span> Application of a Series of New Platinum Organometallic Complexes Derived from Bidentate Schiff Base Ligands in the Hydrogenative and Dehydrogenative Silylation of Styrene</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Belhadj%20Lachachi">M. Belhadj Lachachi</a>, <a href="https://publications.waset.org/abstracts/search?q=Tayeb%20Benabdallah"> Tayeb Benabdallah</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Hadj%20Youcef"> M. Hadj Youcef</a>, <a href="https://publications.waset.org/abstracts/search?q=Jason%20M.%20Lynama"> Jason M. Lynama</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The application of inorganic chemistry to catalysis and environmental chemistry is a rapidly developing field, and novel catalytic metal complexes are now having an impact on the industrial development practice. Advances in organometallic chemistry are crucial for improving the design of compounds to reduce toxic side effects and understand their mechanisms of action. The reaction of platinum(II) organometallic complexes with bidentate Schiff bases derived from 2-Hydroxynaphtalydeneaniline have been carried out. It concerns N,N’-naphtalidene para-nitroaniline (1-a), the, the N,N’-naphtalidene para-ethoxyaniline (1-b), the N,N’-naphtalideneaniline (1-c), the N,N’-naphtalidene para-chloroaniline (1-d) and the N,N’-naphtalidene para-methoxyaniline (1-e). The ligands were fully characterized by I.R., elemental analysis, 1H-NMR, 13C-NMR, ESI Mass Spectrometry and X-Ray Diffraction. The resulting metal complexes were obtained as a cationic species, through a simple substitution reaction, leading to two geometric isomers [1, 2], and characterized by IR, 1H-NMR, 13C-NMR, LIFDI Mass Spectrometry and supported by Elemental Analysis and X-Ray diffraction. Furthermore, a bimetallic platinum complex was prepared from the same ligands and dichloro(1,5-cyclooctadiene)platinum and characterized by X-Ray diffraction [3]The catalytic properties of the prepared platinum complexes in the hydrogenative and dehydrogenative silylation of styrene were investigated, and reaction kinetics conversion to products was determined by 1H-NMR and confirmed by GC-MS. This presentation will detail a comparison of the catalytic activity of five platinum organometallic complexes bearing different Schiff base ligands in the hydrosilylation of styrene, varying the experimental conditions of temperature, nature of the complex and the loading of the catalyst. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=catalysis" title="catalysis">catalysis</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrosilylation" title=" hydrosilylation"> hydrosilylation</a>, <a href="https://publications.waset.org/abstracts/search?q=organometallic" title=" organometallic"> organometallic</a>, <a href="https://publications.waset.org/abstracts/search?q=schiff%20base" title=" schiff base"> schiff base</a> </p> <a href="https://publications.waset.org/abstracts/43642/application-of-a-series-of-new-platinum-organometallic-complexes-derived-from-bidentate-schiff-base-ligands-in-the-hydrogenative-and-dehydrogenative-silylation-of-styrene" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/43642.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">254</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28543</span> Water Gas Shift Activity of PtBi/CeO₂ Catalysts for Hydrogen Production</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=N.%20Laosiripojana">N. Laosiripojana</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20Tepamatr"> P. Tepamatr</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The influence of bismuth on the water gas shift activities of Pt on ceria was studied. The flow reactor was used to study the activity of the catalysts in temperature range 100-400°C. The feed gas composition contains 5%CO, 10% H₂O and balance N₂. The total flow rate was 100 mL/min. The outlet gas was analyzed by on-line gas chromatography with thermal conductivity detector. The catalytic activities of bimetallic 1%Pt1%Bi/CeO₂ catalyst were greatly enhanced when compared with the activities of monometallic 2%Pt/CeO₂ catalyst. The catalysts were characterized by X-ray diffraction (XRD), Temperature-Programmed Reduction (TPR) and surface area analysis. X-ray diffraction pattern of Pt/CeO₂ and PtBi/CeO₂ indicated slightly shift of diffraction angle when compared with pure ceria. This result was due to strong metal-support interaction between platinum and ceria solid solution, causing conversion of Ce⁴⁺ to larger Ce³⁺. The distortions inside ceria lattice structure generated strain into the oxide lattice and facilitated the formation of oxygen vacancies which help to increase water gas shift performance. The H₂-Temperature Programmed Reduction indicated that the reduction peak of surface oxygen of 1%Pt1%Bi/CeO₂ shifts to lower temperature than that of 2%Pt/CeO₂ causing the enhancement of the water gas shift activity of this catalyst. Pt played an important role in catalyzing the surface reduction of ceria and addition of Bi alter the reduction temperature of surface ceria resulting in the improvement of the water gas shift activity of Pt catalyst. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bismuth" title="bismuth">bismuth</a>, <a href="https://publications.waset.org/abstracts/search?q=platinum" title=" platinum"> platinum</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20gas%20shift" title=" water gas shift"> water gas shift</a>, <a href="https://publications.waset.org/abstracts/search?q=ceria" title=" ceria"> ceria</a> </p> <a href="https://publications.waset.org/abstracts/85167/water-gas-shift-activity-of-ptbiceo2-catalysts-for-hydrogen-production" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/85167.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">348</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28542</span> Dielectric Properties of NdTi₍₀.₅₋ₓ₎GeₓMo₀.₅O₄ Ceramics at Microwave Frequency</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yih-Chien%20Chen">Yih-Chien Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=Tse-Lung%20Lin"> Tse-Lung Lin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The microwave characteristics of NdTi₍₀.₅₋ₓ₎GeₓMo₀.₅O₄ are studied to determine the feasibility of their use in the liquid sensor. The microwave characteristics of NdTi₍₀.₅₋ₓ₎GeₓMo₀.₅O₄ are determined using X-ray diffraction (XRD) patterns. The permittivity (𝜀r) of NdTi₍₀.₄₉₎Ge₀.₀₁Mo₀.₅O₄ that is sintered at 1425 ℃ for 4 h is 17.6, the unloaded quality factor (Qu×f) is 33,400 GHz, and it has a temperature coefficient at the resonance frequency (TCF) of -30.7 ppm/℃. The proposed liquid sensor is at the 5G FR1 bands. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=NdTi%E2%82%8D%E2%82%80.%E2%82%85%E2%82%8B%E2%82%93%E2%82%8EGe%E2%82%93Mo%E2%82%80.%E2%82%85O%E2%82%84" title="NdTi₍₀.₅₋ₓ₎GeₓMo₀.₅O₄">NdTi₍₀.₅₋ₓ₎GeₓMo₀.₅O₄</a>, <a href="https://publications.waset.org/abstracts/search?q=X-ray%20diffraction%20pattern" title=" X-ray diffraction pattern"> X-ray diffraction pattern</a>, <a href="https://publications.waset.org/abstracts/search?q=permittivity" title=" permittivity"> permittivity</a>, <a href="https://publications.waset.org/abstracts/search?q=Unloaded%20quality%20factor" title=" Unloaded quality factor"> Unloaded quality factor</a> </p> <a href="https://publications.waset.org/abstracts/170409/dielectric-properties-of-ndti05gemo05o4-ceramics-at-microwave-frequency" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/170409.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">293</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28541</span> Acid Fuchsin Dye Based PMMA Film for Holographic Investigations</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=G.%20Vinitha">G. Vinitha</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Ramalingam"> A. Ramalingam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In view of a possible application in optical data storage devices, diffraction grating efficiency of an organic dye, Acid Fuchsin doped in PMMA matrix was studied under excitation with CW diode pumped Nd: YAG laser at 532 nm. The open aperture Z-scan of dye doped polymer displayed saturable absorption and the closed aperture Z-scan of the samples exhibited negative nonlinearity. The diffraction efficiency of the grating is the ratio of the intensity of the first order diffracted power to the incident read beam power. The dye doped polymer films were found to be good media for recording. It is observed that the formation of gratings strongly depend on the concentration of dye in the polymer film, the intensity ratios of the writing beams and the angle between the writing beams. It has been found that efficient writing can be made at an angle of 20° and when the intensity ratio of the writing beams is unity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=diffraction%20efficiency" title="diffraction efficiency">diffraction efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=nonlinear%20optical%20material" title=" nonlinear optical material"> nonlinear optical material</a>, <a href="https://publications.waset.org/abstracts/search?q=saturable%20absorption" title=" saturable absorption"> saturable absorption</a>, <a href="https://publications.waset.org/abstracts/search?q=surface-relief-gratings" title=" surface-relief-gratings"> surface-relief-gratings</a> </p> <a href="https://publications.waset.org/abstracts/14412/acid-fuchsin-dye-based-pmma-film-for-holographic-investigations" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/14412.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">299</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28540</span> Preparation, Characterization and Ionic Conductivity of (1‒x) (CdI2‒Ag2CrO4)‒(x) Al2O3 Composite Solid Electrolytes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rafiuddin">Rafiuddin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Composite solid electrolyte of the salt and oxide type is an effective approach to improve the ionic conductivity in low and intermediate temperature regions. The conductivity enhancement in the composites occurs via interfaces. Because of their high ionic conduction, composite electrolytes have wide applications in different electrochemical devices such as solid-state batteries, solid oxide fuel cells, and electrochemical cells. In this work, a series of novel (1‒x) (CdI2‒Ag2CrO4)‒xAl2O3 composite solid electrolytes has been synthesized. The prepared materials were characterized by X‒ray diffraction, differential thermal analysis, and AC impedance spectroscopy. The impedance spectra show single semicircle representing the simultaneous contribution of grain and grain boundary. The conductivity increased with the increase of Al2O3 content and shows the maximum conductivity (σ= 0.0012 S cm‒1) for 30% of Al2O3 content at 30 ℃. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=composite%20solid%20electrolyte" title="composite solid electrolyte">composite solid electrolyte</a>, <a href="https://publications.waset.org/abstracts/search?q=X-ray%20diffraction" title=" X-ray diffraction"> X-ray diffraction</a>, <a href="https://publications.waset.org/abstracts/search?q=Impedance%20spectroscopy" title=" Impedance spectroscopy"> Impedance spectroscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=ionic%20conductivity" title=" ionic conductivity"> ionic conductivity</a> </p> <a href="https://publications.waset.org/abstracts/39782/preparation-characterization-and-ionic-conductivity-of-1x-cdi2ag2cro4x-al2o3-composite-solid-electrolytes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/39782.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">405</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28539</span> Fabrication of Tin Oxide and Metal Doped Tin Oxide for Gas Sensor Application</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Goban%20Kumar%20Panneer%20Selvam">Goban Kumar Panneer Selvam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In past years, there is lots of death caused due to harmful gases. So its very important to monitor harmful gases for human safety, and semiconductor material play important role in producing effective gas sensors.A novel solvothermal synthesis method based on sol-gel processing was prepared to deposit tin oxide thin films on glass substrate at high temperature for gas sensing application. The structure and morphology of tin oxide were analyzed by X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The SEM analysis of how spheres shape in tin oxide nanoparticles. The structure characterization of tin oxide studied by X-ray diffraction shows 8.95 nm (calculated by sheers equation). The UV visible spectroscopy indicated a maximum absorption band shown at 390 nm. Further dope tin oxide with selected metals to attain maximum sensitivity using dip coating technique with different immersion and sensing characterization are measured. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=tin%20oxide" title="tin oxide">tin oxide</a>, <a href="https://publications.waset.org/abstracts/search?q=gas%20sensor" title=" gas sensor"> gas sensor</a>, <a href="https://publications.waset.org/abstracts/search?q=chlorine%20free" title=" chlorine free"> chlorine free</a>, <a href="https://publications.waset.org/abstracts/search?q=sensitivity" title=" sensitivity"> sensitivity</a>, <a href="https://publications.waset.org/abstracts/search?q=crystalline%20size" title=" crystalline size"> crystalline size</a> </p> <a href="https://publications.waset.org/abstracts/154626/fabrication-of-tin-oxide-and-metal-doped-tin-oxide-for-gas-sensor-application" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/154626.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">146</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28538</span> Synthesis of Iron-Based Perovskite Type Catalysts from Rust Wastes as a Source of Iron</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20P.%20Joshi">M. P. Joshi</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Deganello"> F. Deganello</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20F.%20Liotta"> L. F. Liotta</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20La%20Parola"> V. La Parola</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20Pantaleo"> G. Pantaleo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> For the first time, commercial iron nitrate was replaced by rust wastes, as a source of Iron for the preparation of LaFeO₃ powders by solution combustion synthesis (SCS). A detailed comparison with a reference powder obtained by SCS, starting from a commercial iron nitrate, was also performed. Several techniques such as X-ray diffraction combined with Rietveld refinement, mass plasma atomic emission spectroscopy, nitrogen adsorption measurements, temperature programmed reduction, X-ray photoelectron spectroscopy, Fourier transform analysis and scanning electron microscopy were used for the characterization of the rust wastes as well as of the perovskite powders. The performance of this ecofriendly material was evaluated by testing the activity and selectivity in the propylene oxidation, in order to use it for the benefit of the environment. Characterization and performance results clearly evidenced limitations and peculiarities of this new approach. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=perovskite%20type%20catalysts" title="perovskite type catalysts">perovskite type catalysts</a>, <a href="https://publications.waset.org/abstracts/search?q=solution%20combustion%20synthesis" title=" solution combustion synthesis"> solution combustion synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=X-ray%20diffraction" title=" X-ray diffraction"> X-ray diffraction</a>, <a href="https://publications.waset.org/abstracts/search?q=rust%20wastes" title=" rust wastes"> rust wastes</a> </p> <a href="https://publications.waset.org/abstracts/76645/synthesis-of-iron-based-perovskite-type-catalysts-from-rust-wastes-as-a-source-of-iron" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/76645.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">333</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28537</span> Effect of Incineration Temperatures to Time on the Rice Husk Ash (RHA) Silica Structure: A Comparative Study to the Literature with Experimental Work</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Binyamien%20Ibrahim%20Rasoul">Binyamien Ibrahim Rasoul</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Controlled burning of rice husk can produce amorphous rice husk ash (RHA) with high silica content which can significantly enhance the properties of concrete. This study has been undertaken to investigate the relationship between the incineration temperatures and time to produce RHA with ultimate reactivity. The rice husk samples were incinerated in an electrical muffle furnace at 350°C, 400°C, 425°C 450°C, 475°C, and 500°C for 60 and 90 minutes, respectively. The silica structure in the Rice Husk Ash (RHA) was determined using X-Ray diffraction analysis, while chemical properties obtained using X-Ray Fluorescence. The results show that RHA appeared to be the totally amorphous when the husk incineration up to 425°C for 60 and even at 90 minutes. However, with increased temperature to 450°C, 475°C and 500°C, traces of crystalline silica (quartz) were detected. However, cannot be taken into account as it does not affect on the ash structure. In conclusion, the result gives an idea of the temperature and the time required to produce ash from rice husk with totally amorphous form. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=rice%20husk%20ash" title="rice husk ash">rice husk ash</a>, <a href="https://publications.waset.org/abstracts/search?q=silica" title=" silica"> silica</a>, <a href="https://publications.waset.org/abstracts/search?q=compressive%20strength" title=" compressive strength"> compressive strength</a>, <a href="https://publications.waset.org/abstracts/search?q=tensile%20strength" title=" tensile strength"> tensile strength</a>, <a href="https://publications.waset.org/abstracts/search?q=X-Ray%20diffraction" title=" X-Ray diffraction"> X-Ray diffraction</a>, <a href="https://publications.waset.org/abstracts/search?q=X-R%20florescence" title=" X-R florescence"> X-R florescence</a>, <a href="https://publications.waset.org/abstracts/search?q=pozzolanic%20activity" title=" pozzolanic activity"> pozzolanic activity</a> </p> <a href="https://publications.waset.org/abstracts/146345/effect-of-incineration-temperatures-to-time-on-the-rice-husk-ash-rha-silica-structure-a-comparative-study-to-the-literature-with-experimental-work" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/146345.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">159</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28536</span> X-Ray Diffraction and Crosslink Density Analysis of Starch/Natural Rubber Polymer Composites Prepared by Latex Compounding Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Raymond%20Dominic%20Uzoh">Raymond Dominic Uzoh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Starch fillers were extracted from three plant sources namely amora tuber (a wild variety of Irish potato), sweet potato and yam starch and their particle size, pH, amylose, and amylopectin percentage decomposition determined accordingly by high performance liquid chromatography (HPLC). The starch was introduced into natural rubber in liquid phase (through gelatinization) by the latex compounding method and compounded according to standard method. The prepared starch/natural rubber composites was characterized by Instron Universal testing machine (UTM) for tensile mechanical properties. The composites was further characterized by x-ray diffraction and crosslink density analysis. The particle size determination showed that amora starch granules have the highest particle size (156 × 47 μm) followed by yam starch (155× 40 μm) and then the sweet potato starch (153 × 46 μm). The pH test also revealed that amora starch has a near neutral pH of 6.9, yam 6.8, and sweet potato 5.2 respectively. Amylose and amylopectin determination showed that yam starch has a higher percentage of amylose (29.68), followed by potato (22.34) and then amora starch with the lowest value (14.86) respectively. The tensile mechanical properties testing revealed that yam starch produced the best tensile mechanical properties followed by amora starch and then sweet potato starch. The structure, crystallinity/amorphous nature of the product composite was confirmed by x-ray diffraction, while the nature of crosslinking was confirmed by swelling test in toluene solvent using the Flory-Rehner approach. This research study has rendered a workable strategy for enhancing interfacial interaction between a hydrophilic filler (starch) and hydrophobic polymeric matrix (natural rubber) yielding moderately good tensile mechanical properties for further exploitation development and application in the rubber processing industry. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=natural%20rubber" title="natural rubber">natural rubber</a>, <a href="https://publications.waset.org/abstracts/search?q=fillers" title=" fillers"> fillers</a>, <a href="https://publications.waset.org/abstracts/search?q=starch" title=" starch"> starch</a>, <a href="https://publications.waset.org/abstracts/search?q=amylose" title=" amylose"> amylose</a>, <a href="https://publications.waset.org/abstracts/search?q=amylopectin" title=" amylopectin"> amylopectin</a>, <a href="https://publications.waset.org/abstracts/search?q=crosslink%20density" title=" crosslink density"> crosslink density</a> </p> <a href="https://publications.waset.org/abstracts/86093/x-ray-diffraction-and-crosslink-density-analysis-of-starchnatural-rubber-polymer-composites-prepared-by-latex-compounding-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/86093.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">169</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28535</span> Study of Lanthanoide Organic Frameworks Properties and Synthesis: Multicomponent Ligands</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ayla%20Roberta%20Galaco">Ayla Roberta Galaco</a>, <a href="https://publications.waset.org/abstracts/search?q=Juliana%20Fonseca%20De%20Lima"> Juliana Fonseca De Lima</a>, <a href="https://publications.waset.org/abstracts/search?q=Osvaldo%20Antonio%20Serra"> Osvaldo Antonio Serra</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Coordination polymers, also known as metal-organic frameworks (MOFs) or lanthanoide organic frameworks (LOFs) have been reported due of their promising applications in gas storage, separation, catalysis, luminescence, magnetism, drug delivery, and so on. As a type of organic–inorganic hybrid materials, the properties of coordination polymers could be chosen by deliberately selecting the organic and inorganic components. LOFs have received considerable attention because of their properties such as porosity, luminescence, and magnetism. Methods such as solvothermal synthesis are important as a strategy to control the structural and morphological properties as well as the composition of the target compounds. In this work the first solvothermal synthesis was employed to obtain the compound [Y0.4,Yb0.4,Er0.2(dmf)(for)(H2O)(tft)], by using terephthalic acid (tft) and oxalic acid, decomposed in formate (for), as ligands; Yttrium, Ytterbium and, Erbium as metal centers, in DMF and water for 4 days under 160 °C. The semi-rigid terephthalic acid (dicarboxylic) coordinates with Ln3+ ions and also is possible to form a polyfunctional bridge. On the other hand, oxalate anion has no high-energy vibrational groups, which benefits the excitation of Yb3+ in upconversion process. It was observed that the compounds with water molecules in the coordination sphere of the lanthanoide ions cause lower crystalline properties and change the structure of the LOF (1D, 2D, 3D). In the FTIR, the bands at 1589 and 1500 cm-1 correspond to the asymmetric stretching vibration of –COO. The band at 1383 cm-1 is assigned to the symmetric stretching vibration of –COO. Single crystal X-ray diffraction study reveals an infinite 3D coordination framework that crystalizes in space group P21/c. The other three products, [TR(chel)(ofd)0,5(H2O)2], where TR= Eu3+, Y3, and Yb3+/Er3+ were obtained by using 1, 2-phenylenedioxydiacetic acid (ofd) and chelidonic acid (chel) as organic ligands. Thermal analysis shows that the lanthanoide organic frameworks do not collapse at temperatures below 250 °C. By the polycrystalline X-ray diffraction patterns (PXRD) it was observed that the compounds with Eu3+, Y3+, and Yb3+/Er3+ ions are isostructural. From PXRD patterns, high crystallinity can be noticed for the complexes. The final products were characterized by single X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), energy dispersive spectroscopy (EDS) and thermogravimetric analysis (TGA). The X-ray diffraction (XRD) is an effective method to investigate crystalline properties of synthesized materials. The solid crystal obtained in the synthesis show peaks at 2θ < 10°, indicating the MOF formation. The chemical composition of LOFs was also confirmed by EDS. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=isostructural" title="isostructural">isostructural</a>, <a href="https://publications.waset.org/abstracts/search?q=lanthanoids" title=" lanthanoids"> lanthanoids</a>, <a href="https://publications.waset.org/abstracts/search?q=lanthanoids%20organic%20frameworks%20%28LOFs%29" title=" lanthanoids organic frameworks (LOFs)"> lanthanoids organic frameworks (LOFs)</a>, <a href="https://publications.waset.org/abstracts/search?q=metal%20organic%20frameworks%20%20%28MOFs%29" title=" metal organic frameworks (MOFs)"> metal organic frameworks (MOFs)</a>, <a href="https://publications.waset.org/abstracts/search?q=thermogravimetry" title=" thermogravimetry"> thermogravimetry</a>, <a href="https://publications.waset.org/abstracts/search?q=X-Ray%20diffraction" title=" X-Ray diffraction"> X-Ray diffraction</a> </p> <a href="https://publications.waset.org/abstracts/65646/study-of-lanthanoide-organic-frameworks-properties-and-synthesis-multicomponent-ligands" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/65646.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">260</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28534</span> Investigation on the Kinetic Mechanism of the Reduction of Fe₂O₃/CoO-Decorated Carbon Xerogel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Reza%20Ghaani">Mohammad Reza Ghaani</a>, <a href="https://publications.waset.org/abstracts/search?q=Michele%20Catti"> Michele Catti</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The reduction of CoO/Fe₂O₃ oxides supported on carbon xerogels was studied to elucidate the effect of nano-size distribution of the catalyst in carbon matrices. Resorcinol formaldehyde xerogels were synthesized, impregnated with iron and cobalt nitrates, and subsequently heated to obtain the oxides. The mechanism of oxide reduction to metal was investigated by in-situ synchrotron X-ray diffraction in dynamic, non-isothermal conditions. Kinetic profiles of the reactions were obtained by plotting the diffraction intensities of selected Bragg peaks vs. temperature. The extracted Temperature-Programmed-Reduction (TPR) diagrams were analyzed by appropriate kinetic models, leading to best results with the Avrami-Erofeev model for all reduction reactions considered. The activation energies for the two-step reduction of iron oxide were 65 and 37 kJmol⁻¹, respectively. The average value for the reduction of CoO to Co was found to be around 21 kJ mol⁻¹. Such results may contribute to develop efficient and inexpensive non-noble metal-based catalysts in element form, e.g., Fe, Co, via heterogenization of metal complexes on mesoporous supports. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=non-isothermal%20kinetics" title="non-isothermal kinetics">non-isothermal kinetics</a>, <a href="https://publications.waset.org/abstracts/search?q=carbon%20aerogel" title=" carbon aerogel"> carbon aerogel</a>, <a href="https://publications.waset.org/abstracts/search?q=in-situ%20synchrotron%20X-ray%20diffraction" title=" in-situ synchrotron X-ray diffraction"> in-situ synchrotron X-ray diffraction</a>, <a href="https://publications.waset.org/abstracts/search?q=reduction%20mechanisms" title=" reduction mechanisms"> reduction mechanisms</a> </p> <a href="https://publications.waset.org/abstracts/78625/investigation-on-the-kinetic-mechanism-of-the-reduction-of-fe2o3coo-decorated-carbon-xerogel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/78625.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">240</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28533</span> Revealing Single Crystal Quality by Insight Diffraction Imaging Technique</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Thu%20Nhi%20Tran%20Caliste">Thu Nhi Tran Caliste</a> </p> <p class="card-text"><strong>Abstract:</strong></p> X-ray Bragg diffraction imaging (“topography”)entered into practical use when Lang designed an “easy” technical setup to characterise the defects / distortions in the high perfection crystals produced for the microelectronics industry. The use of this technique extended to all kind of high quality crystals, and deposited layers, and a series of publications explained, starting from the dynamical theory of diffraction, the contrast of the images of the defects. A quantitative version of “monochromatic topography” known as“Rocking Curve Imaging” (RCI) was implemented, by using synchrotron light and taking advantage of the dramatic improvement of the 2D-detectors and computerised image processing. The rough data is constituted by a number (~300) of images recorded along the diffraction (“rocking”) curve. If the quality of the crystal is such that a one-to-onerelation between a pixel of the detector and a voxel within the crystal can be established (this approximation is very well fulfilled if the local mosaic spread of the voxel is < 1 mradian), a software we developped provides, from the each rocking curve recorded on each of the pixels of the detector, not only the “voxel” integrated intensity (the only data provided by the previous techniques) but also its “mosaic spread” (FWHM) and peak position. We will show, based on many examples, that this new data, never recorded before, open the field to a highly enhanced characterization of the crystal and deposited layers. These examples include the characterization of dislocations and twins occurring during silicon growth, various growth features in Al203, GaNand CdTe (where the diffraction displays the Borrmannanomalous absorption, which leads to a new type of images), and the characterisation of the defects within deposited layers, or their effect on the substrate. We could also observe (due to the very high sensitivity of the setup installed on BM05, which allows revealing these faint effects) that, when dealing with very perfect crystals, the Kato’s interference fringes predicted by dynamical theory are also associated with very small modifications of the local FWHM and peak position (of the order of the µradian). This rather unexpected (at least for us) result appears to be in keeping with preliminary dynamical theory calculations. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=rocking%20curve%20imaging" title="rocking curve imaging">rocking curve imaging</a>, <a href="https://publications.waset.org/abstracts/search?q=X-ray%20diffraction" title=" X-ray diffraction"> X-ray diffraction</a>, <a href="https://publications.waset.org/abstracts/search?q=defect" title=" defect"> defect</a>, <a href="https://publications.waset.org/abstracts/search?q=distortion" title=" distortion"> distortion</a> </p> <a href="https://publications.waset.org/abstracts/143138/revealing-single-crystal-quality-by-insight-diffraction-imaging-technique" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/143138.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">131</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28532</span> Influence of Substitution on Structure of Tin Lantanium Pyrochlore La₂₋ₓSrₓSn₂O₇₋δ(0 ≤ x ≤ 0.25) Solid-Oxide Fuel Cells</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bounar%20Nedjemeddine">Bounar Nedjemeddine</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Materials with the pyrochlore lattice structure have attracted much recent attention due to their wide applications in ceramic thermal barrier coatings, high-permittivity dielectrics, and potential solid electrolytes in solid-oxide fuel cells. The work described in this paper is devoted to the synthesis and characterization of a pyrochlore structure based on lanthanum (La₂O₃) and tin (SnO₂) oxides of general formula La₂Sn₂O₇, substituted by Sr at the site La. Their structures were determined from X-ray powder diffraction using CELFER analysis. All the compositions present the space group Fd-3m. The substitution of La by Sr in the La₂Sn₂O₇ compound causes a variation of the cell parameters. The difference in charge between La³⁺ and Sr²⁺ and the difference in size cause the cell parameters to decrease from a=10.7165 A° to a=10.6848 A° for the substitution rates (x = 0.05, 0.1, 0.15 ...), which leads to a decrease in the volume of the mesh. For a substitution rate x = 0.25, there is an increase in the cell parameters (a=10.7035A°), which can be explained by a competitiveness of the size effect and the presence of a gap in the structure which go in the opposite direction. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=solid-oxide%20fuel%20cells" title="solid-oxide fuel cells">solid-oxide fuel cells</a>, <a href="https://publications.waset.org/abstracts/search?q=structure" title=" structure"> structure</a>, <a href="https://publications.waset.org/abstracts/search?q=pyrochlore" title=" pyrochlore"> pyrochlore</a>, <a href="https://publications.waset.org/abstracts/search?q=X-ray%20diffraction" title=" X-ray diffraction"> X-ray diffraction</a> </p> <a href="https://publications.waset.org/abstracts/102422/influence-of-substitution-on-structure-of-tin-lantanium-pyrochlore-la2srsn2o7d0-x-025-solid-oxide-fuel-cells" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/102422.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">127</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28531</span> Ceramic Composites and Its Applications for Pb Adsorption</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=C.%20L.%20Popa">C. L. Popa</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20L.%20Iconaru"> S. L. Iconaru</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Costescu"> A. Costescu</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20S.%20Ciobanu"> C. S. Ciobanu</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Motelica%20Heino"> M. Motelica Heino</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Guegan"> R. Guegan</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Predoi"> D. Predoi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Surface functionalization of ceramic composites with a special focus on tetraethyl orthosilicate (TEOS) and hydroxyapatite (HAp) is discoursed. Mesoporous ceramic HAp-TEOS composites were prepared by the incorporation of hydroxyapatite into tetraethyl orthosilicate by sol-gel method. The resulting samples were analysed by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectroscopy, and Raman spectroscopy and nitrogen physisorption. The removal of Pb2+ ions from aqueous solutions was evaluated using Atomic Absorbtion Spectroscopy (AAS). Removal experiments of Pb2+ ions were carried out in aqueous solutions with controlled Pb2+ at pH ~ 3 and pH ~ 5. After removal experiment of Pb2+ at pH 3 and pH 5, porous hydroxyapatite nanoparticles is transformed into PbHAp_3 and PbHAp_5 via the adsorption of Pb2+ ions followed by the cation exchange reaction. The diffraction patterns show that THAp nanoparticles were successfully coated with teos without any structural changes. On the other, the AAS analysis showed that THAp can be useful in the removal Pb2+ from water contaminated. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=teos" title="teos">teos</a>, <a href="https://publications.waset.org/abstracts/search?q=hydroxyapatite" title=" hydroxyapatite"> hydroxyapatite</a>, <a href="https://publications.waset.org/abstracts/search?q=environment%20applications" title=" environment applications"> environment applications</a>, <a href="https://publications.waset.org/abstracts/search?q=biosystems%20engineering" title=" biosystems engineering"> biosystems engineering</a> </p> <a href="https://publications.waset.org/abstracts/2457/ceramic-composites-and-its-applications-for-pb-adsorption" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2457.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">384</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28530</span> Sol-Gel Derived ZnO Nanostructures: Optical Properties</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sheo%20K.%20Mishra">Sheo K. Mishra</a>, <a href="https://publications.waset.org/abstracts/search?q=Rajneesh%20K.%20Srivastava"> Rajneesh K. Srivastava</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20K.%20Shukla"> R. K. Shukla</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the present work, we report on the optical properties including UV-vis absorption and photoluminescence (PL) of ZnO nanostructures synthesized by sol-gel method. Structural and morphological investigations have been performed by X-ray diffraction method (XRD) and scanning electron microscopy (SEM). The XRD result confirms the formation of hexagonal wurtzite phase of ZnO nanostructures. The presence of various diffraction peaks suggests polycrystalline nature. The XRD pattern exhibits no additional peak due to by-products such as Zn(OH)2. The average crystallite size of prepared ZnO sample corresponding to the maximum intensity peaks is to be ~38.22 nm. The SEM micrograph shows different nanostructures of pure ZnO. Photoluminescence (PL) spectrum shows several emission peaks around 353 nm, 382 nm, 419 nm, 441 nm, 483 nm and 522 nm. The obtained results suggest that the prepared phosphors are quite suitable for optoelectronic applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ZnO" title="ZnO">ZnO</a>, <a href="https://publications.waset.org/abstracts/search?q=sol-gel" title=" sol-gel"> sol-gel</a>, <a href="https://publications.waset.org/abstracts/search?q=XRD" title=" XRD"> XRD</a>, <a href="https://publications.waset.org/abstracts/search?q=PL" title=" PL"> PL</a> </p> <a href="https://publications.waset.org/abstracts/39664/sol-gel-derived-zno-nanostructures-optical-properties" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/39664.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">400</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28529</span> Wear Behavior of Intermetallic (Ni3Al) Coating at High Temperature </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=K.%20Mehmood">K. Mehmood</a>, <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Asif%20Rafiq"> Muhammad Asif Rafiq</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Nasir%20Khan"> A. Nasir Khan</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Mudassar%20Rauf"> M. Mudassar Rauf</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Air plasma spraying system was utilized to deposit Ni3Al coatings on AISI 321 steel samples. After thermal spraying, the nickel aluminide intermetallic coatings were isothermal heat treated at various temperatures. In this regard, temperatures from 500 °C to 800 °C with 100 °C increments were selected. The coatings were soaked for 10, 30, 60 and 100 hours at the mentioned temperatures. These coatings were then tested by a pin on disk method. It was observed that the coatings exposed at comparatively higher temperature experienced lower wear rate. The decrease in wear rate is due to the formation of NiO phase. Further, the as sprayed and heat treated coatings were characterized by other tools such as Microhardness testing, optical and scanning electron microscopy (SEM) and X-Ray diffraction analysis. After isothermal heat treatment, NiO was observed the main phase by X-Ray diffraction technique. Moreover, the surface hardness was also determined higher than cross sectional hardness. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=air%20plasma%20spraying" title="air plasma spraying">air plasma spraying</a>, <a href="https://publications.waset.org/abstracts/search?q=Ni%20-20Al" title=" Ni -20Al"> Ni -20Al</a>, <a href="https://publications.waset.org/abstracts/search?q=tribometer" title=" tribometer"> tribometer</a>, <a href="https://publications.waset.org/abstracts/search?q=intermetallic%20coating" title=" intermetallic coating"> intermetallic coating</a>, <a href="https://publications.waset.org/abstracts/search?q=nickel%20aluminide" title=" nickel aluminide "> nickel aluminide </a> </p> <a href="https://publications.waset.org/abstracts/35455/wear-behavior-of-intermetallic-ni3al-coating-at-high-temperature" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/35455.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">329</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28528</span> X-Ray Diffraction and Precision Dilatometer Study of Neutron-Irradiated Nuclear Graphite Recovery Process up to 1673K</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yuhao%20Jin">Yuhao Jin</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhou%20Zhou"> Zhou Zhou</a>, <a href="https://publications.waset.org/abstracts/search?q=Katsumi%20Yoshida"> Katsumi Yoshida</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhengcao%20Li"> Zhengcao Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Tadashi%20Maruyama"> Tadashi Maruyama</a>, <a href="https://publications.waset.org/abstracts/search?q=Toyohiko%20Yano"> Toyohiko Yano</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Four kinds of nuclear graphite, IG-110U, ETP-10, CX-2002U and IG-430U were neutron-irradiated at different fluences and temperatures, ranged from 1.38 x 1024 to 7.4 x 1025 n/m2 (E > 1.0 MeV) at 473K, 573K and 673K. To take into account the disorder in the microstructure, such as stacking faults and anisotropic coherent lengths, the X-ray diffraction patterns were interpreted using a comprehensive structural model and a refinement program CARBONXS. The deduced structural parameters show the changes of lattice parameters, coherent lengths along the c-axis and the basal plane, and the degree of turbostratic disorder as a function of the irradiation dose. Our results reveal neutron irradiation effects on the microstructure and macroscopic dimension, which are consistent with previous work. The methodology used in this work enables the quantification of the damage on the microstructure of nuclear graphite induced by neutron irradiation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nuclear%20graphite" title="nuclear graphite">nuclear graphite</a>, <a href="https://publications.waset.org/abstracts/search?q=neutron%20irradiation" title=" neutron irradiation"> neutron irradiation</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20annealing" title=" thermal annealing"> thermal annealing</a>, <a href="https://publications.waset.org/abstracts/search?q=recovery%20behavior" title=" recovery behavior"> recovery behavior</a>, <a href="https://publications.waset.org/abstracts/search?q=dimensional%20change" title=" dimensional change"> dimensional change</a>, <a href="https://publications.waset.org/abstracts/search?q=CARBONX" title=" CARBONX"> CARBONX</a>, <a href="https://publications.waset.org/abstracts/search?q=XRD%20analysis" title=" XRD analysis"> XRD analysis</a> </p> <a href="https://publications.waset.org/abstracts/72835/x-ray-diffraction-and-precision-dilatometer-study-of-neutron-irradiated-nuclear-graphite-recovery-process-up-to-1673k" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/72835.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">401</span> </span> </div> </div> <ul class="pagination"> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=x-ray%20diffraction%20analysis&page=1" rel="prev">‹</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=x-ray%20diffraction%20analysis&page=1">1</a></li> <li class="page-item active"><span class="page-link">2</span></li> <li 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