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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 64 for “"diffractometry"”.
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Compuestos de coordinación de iones de metales de transición con ligandos heterocíclicos dadores de S,N
… spectroscopy, X-ray single-crystal and powder diffractometry. Besides, we studied the antimicrobial activity and phagocytic functíon in humans neutrophils treated with complexs and ligands aislated.
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Development of Ti-Si-N and Ta-Si-N as diffusion barriers
… using sheet resistance measurements, X-ray diffractometry (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), auger electron spectroscopy (AES) and annealing in a controlled ambient atmosphere"--Abstract, page iv.
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ΓΕΩΜΑΓΝΗΤΙΚΕΣ ΜΕΛΕΤΕΣ ΣΕ ΛΙΜΝΑΙΑ ΙΖΗΜΑΤΑ
… MAGNETIC EXTRACTS STUDIES (DEBYE-SCHERER X-RAY, DIFFRACTOMETRY, THERMOMAGNETIC EXPERIMENTS, MOSSBAUER SPECTROSCOPY AND OPTICAL MICROSCOPY) SHOWED THE PRESENCE OF ANGULAR FRESH MAGNETITE OR PARTIALLY OXIDIZED TOWARDS HAEMATITE, WITH SIZE RANGING FROM LESS THAN 1 MM UP TO FEW MICRONS. THE NATURAL …
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Crystal engineering of novel organic-inorganic compounds of N- and O-donor dipyridyl ligands
… Compounds prepared were characterised by x-ray diffractometry. Thermal analysis (thermogravimetry (TG), differential scanning calorimetry (DSC) and hot stage microscopy (HSM)) was used to determine the thermal behaviour of these compounds. Microanalysis was used to confirm elemental composition.
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Determination of Phase Fraction, Lattice Parameters and Crystallite Size in Mechanically Alloyed Fe-Ni Powders
… mill at liquid nitrogen temperature. X-ray diffractometry was used to determine the phase fractions of the bcc and fcc phases in the alloys and to determine the lattice parameters and crystallite size. The main objective of this project is to study how the milling at low temperatures affects …
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The Synthesis of Core-Shell Iron@Gold Nanoparticles and Their Characterization
… electron microscopy), XRD (X-ray Powder Diffractometry), EDS (Energy disperse X-ray spectroscopy), SQUID (Superconducting Quantum Interference Device), TGA (Thermograviometric analysis), UV-visible absorption spectroscopy and Faraday rotation were employed to characterize the morphology, …
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Cavitation erosion of materials
… and transmission electron microscopy and X-ray diffractometry. The fractographic studies on the alloys revealed, in particular, the role played by second phase particles and other surface features such as protruding grain boundaries and surface steps created by dislocation movement, twinning and …
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Coherent Scatter Computed Tomography for Core Composition Analysis of Intact Kidney Stones - Prospective Clinical Study
… Currently, infrared spectroscopy (IRS) and x-ray diffractometry (XRD) provide bulk composition results of urinary calculi in powdered form. Clinicians use the results to prescribe medical and dietary measures to restore the physiologic chemical balance of urine or rather alter it for the purpose …
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Effects of processing on microstructure and properties of Ti-Ta Alloys
… Room temperature and high temperature x-ray diffractometry was used to identify phases present at temperatures ranging from room temperature up to 750 [degree]C. Hot extrusion without further heat treatment was found to be insufficient to produce a homogenous, fully dense alloy. Elongation, …
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Investigation of co1-2xnixmnxceyfe2-yo4 double-substitution spinel for highly efficient detection of flammable and hazardous liquefied petroleum gas: sensing performance
… spinel ferrites. X-ray diffractometry (XRD), high resolution transmission electron micrographs (HRTEM), and X-ray photoelectron spectroscopy (XPS) of the samples confirm the formation of the spinels. The gas sensing performance of these samples was tested at an operating …
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Synthesis and Fabrication of Alpha Phase Iron Oxide (α-Fe2O3) Nanostructured doped with Ruthenium for Highly Sensitive and Selective Flammable and Toxic Gas Sensor
… some characterisation techniques, such as X-ray diffractometry, thermogravimetric analysis, x-ray photoelectron spectroscopy, Brunauer-emmett-teller surface area analysis, scanning electron microscopy, and high-resolution transmission electron microscopy, to study certain properties of the …
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The effect of age on the structure and compostition of the cell walls of Choanephora cucurbitarum
… visible and infrared spectrophotometry, x-ray diffractometry and electron microscopy. Qualitative evaluation revealed the presence of lipids, proteins, neutral sugars, strong alkali soluble sugars, chitin, chitosan and uronic acids in the cell walls of both the 1 and 7 day old cultures. As the …
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Separation of close isomers by enclathration
… resulting products were analysed by X-ray powder diffractometry. Competition experiments were also performed in the solid state to determine whether the selectivity of the host differed from that observed in solution.
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DC magnetron reactive sputtering of low stress AlN piezoelectric thin films for MEMS application
… characterization was conducted with x-ray diffractometry, spectroscopic ellipsometry, and surface profilometry. Optimization of film deposition parameters improved AIN film properties in the MEMS sensors. Film property characterization using response surface methodology indicated …
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The effect of manganese doping on the superconducting transition temperature and the upper critical field of tin-molybdenum-sulfide
… They were characterized by x-ray powder diffractometry, optical microscopy. electron microscopy, and electron microprobe work. The transition temperature decreased slow1~ with increasing manganese content until x=O.06. It then increased until x=O.10. after which it fell slow1~ again. …
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Understanding variability in performance of type il cements: insights from Raman imaging
… and rheology of fresh paste, with laser diffractometry, X-ray diffraction (XRD), and Raman imaging. A key contribution of the work is also the development of an automated Raman imaging algorithm that improves reproducibility by relying on objective criteria for Raman band and peak-top …
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Towards the development of calcium ion batteries
… X-ray photoelectron spectroscopy and x-ray diffractometry studies provided supporting evidence of calcium intercalation into the Mo3Se4 Chevrel phase structure. Furthermore, preliminary results are presented involving beryllium and aluminum electrochemistry in the Mo3Se4 Chevrel phase.
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The Interplay Between Anions And Radicals In Synthesis, Spectroscopy, And Catalysis
… via a combination of single crystal X-ray diffractometry, electrochemistry, NMR spectroscopy, and reactivity. These studies were developed to understand new fundamental bonding between new types of bonds or to understand these species role in reactivity. Either the presence of CuI cations …
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Formulation of novel buccal mucosal drug delivery systems for nicotine replacement therapy (NRT)
… (SEM) (surface and internal morphology), X-ray diffractometry (XRD) (physical form), attenuated total reflectance – Fourier transform infrared (ATR-FTIR) spectroscopy (physical interactions), thermo gravimetric analysis (TGA), differential scanning calorimetry (DSC), (thermal profiles) and …
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Structure-activity relationships in Werner clathrates
… state. The techniques used are x-ray powder diffractometry, IR spectroscopy and Thermogravimetry (including Differential Thermal Analysis).
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