Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 60 for “"Phase-Analysis"”.
-
Combining Chemometrics and non-target GC-IMS gas phase analysis for improved bioprocess monitoring
… to gain process insight through chemometric data analysis. Improving process understanding through novel and advanced analytical technologies is an active area of research. In bioprocess monitoring, most established PAT focuses on the liquid broth. A potential addition to established PAT is the …
-
What can we learn from climate data? : Methods for fluctuation, time/scale and phase analysis
… and future evolution of climate. Time series analysis tries to link the observed data to the computer models: Using statistical methods, one estimates characteristic properties of the underlying climatological processes that in turn can enter the models. The quality of an estimation is …
-
Low-dimensional carbon allotropes: an electron microscopy investigation
… methods, like electron holography and Geometric Phase Analysis (GPA), using a low-voltage optical set-up, to reduce radiation damage in the samples. Electron holography was used to successfully measure the mean electrostatic potential of an isolated SWCNT and that of a mono-atomically thin …
-
Analysis of residual stresses in laser trimmed alumina microelectronic substrates
… using x-ray diffraction residual stress analysis and dynamic strain measurements using strain gages before and after laser trimming. X-ray diffraction measurements were carried out in both the longitudinal and transverse directions on the front and back sides of the substrates. The …
-
High Pressure Quantum Oscillation Study of BiTeI and Bi2Te3
… agreement with Hall effect measurements. The phase of the oscillations showed that both Fermi surfaces have a Berry phase of $\pi$ associated with them, consistent with theoretical predictions for a Rashba system. As pressure is applied, it was observed that the inner Fermi surface expands …
-
An investigation of phase transformations in Pt-V coating systems
Phase transformations in Pt-V coatings after heat treatment have been investigated. Five Pt- V ordered phases (PtV, PtV 3 , Pt 2 V, Pt 3 V and Pt 8 V) have been previously observed in bulk platinum-vanadium alloys. Phase formation in coatings is expected to be sequential and controlled by the …
-
An analysis of the Hispanic student dropout program and perceived exemplary components and attributes
The purpose of the study was to conduct a two-phase analysis and case study of the Hispanic Student Dropout Program (HSDP) in middle and secondary schools to determine the perceptions of principals, assistant principals, administrators, coordinators, teachers, and teacher aides about the presence …
-
Modeling, Detection, and Localization of High-Impedance Faults In Low-Voltage Distribution Feeders
… of HIFs is detected with harmonic-current phase analysis and localized with recloser-sectionalizer technology as presented in this work. A sectionalizer algorithm is then presented showing the decision criteria for HIF declaration and shown to discriminate against nominal behavior in …
-
Investigation of Krypton bubbles in copper using x-ray techniques
… diffraction techniques. Stress determination and phase analysis are carried out to determine the residual stress of the host copper metal and the internal pressure of the krypton bubbles. Lattice parameter determination of krypton bubbles confirms solidification of krypton with a fee structure …
-
The effects of annealing on phase transformation in platinum-molybdenum coatings
… is due to the fact that the formation of ordered phases increases the strength and surface hardness and could also have an impact on surface activity and chemical properties. The changes in mechanical, physical and chemical properties could be of significant importance in enhancing the performance …
-
Preparation, microstructure and properties of silicon carbide-dysprosia composites
… undergoes a displacive (monoclinic to cubic) phase transformation with volume expansion during cooling from high temperatures ($\approx$1850$\sp\circ$C). The effects of Dy$\sb2$O$\sb3$ additions on the microstructure and on selected mechanical properties of the composites were investigated. …
-
Effect of Amines as Corrosion Inhibitors for a Low Carbon Steel in Power Industry
… using scanning electron microscope (SEM), phase analysis was done utilizing Fourier transform infrared spectroscopy (FTIR), and weight loss was performed to assess kinetics of oxidation. Control samples showed the highest metal dissolution rate. DBU showed the best performance in metal …
-
Conceptual Assessment of an Oblique Flying Wing Aircraft Including Control and Trim Characteristics
… knowledge early in the concept evaluation phase. Analysis tools commonly used in early conceptual level analysis were evaluated for applicability to a non-standard aircraft design such as an oblique flying wing. Many tools used in early analyses make assumptions that are incompatible with …
-
Near surface wear structure of ceramic components
… techniques including : (1) identification of phases and chemical species, (2) peak separation, (3) quantitative phase analysis, (4) intensity band simulation, and (5) line shape analysis, were applied to ceramic materials of silicon nitride, zirconia toughened alumina, fully and partially …
-
A methodology for the design of cellular manufacturing systems
… The system design effort is broken into four phase -- analysis, conceptual design, embodiment design, and detailed design. Te main focus of this research effort has been on the development of a five-stage approach for the embodiment design phase. In this phase, the abstract concepts, formed in …
-
Phase anomalies and plateaus in auditory nerve fiber responses to high-frequency tones
Phase reversals and phase plateaus have been found in studies that measure motion of the basilar membrane (BM) at the base of the cochlea in response to high-level sounds above the characteristic frequency (CF). In contrast, such patterns have not been found in responses of auditory-nerve fibers …
-
Effect of temperature-induced membrane lipid phase transition in recipient cells on conjugation in Escherichia coli K-12
… growth by.a temperature-induced membrane lipid phase transition. In matings with a F-like, R-factor donor, strain K1059 demonstrated a measurably reduced recipient ability at temperatures below 35.5 C when growth medium was supplemented with elaidate versus oleate. K1059 parent strain, Ymel, did …
-
Health-Related Beliefs, Practices, and Experiences of Migrant Dominicans in the Northeastern United States
… Culture Care Diversity and Universality and four-phase analysis method. The health-related beliefs, practices and experiences of a convenience sample of 15 self-identified adult Dominicans living in the United States for six months or more were explored in three focus groups, assisted by trained …
-
Anti wetting additives for aluminosilicate refractories in molten aluminum contact applications
… led to the in-situ formation of celsian phases within the refractory matrix that led to improved corrosion resistance at 1300⁰C. Phase analysis revealed that celsian formation suppressed the formation of mullite within refractories, thereby reducing penetration"--Abstract, page iv.</p>
-
Exploring Electrochemical Properties of Ti-Containing Oxides as Anodes for SOFCs
… synthesised. All compositions were subjected to phase analysis, electrical conductivity measurements in air and H2, and evaluation for their catalytic activity towards hydrogen oxidation reaction (HOR). Among the samples investigated, K1.54Mg0.77Ti7.23O16 showed the highest electrical …
Page 1 of 3