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 12014 for “"modified"”.
-
Modified Vapor Pressure Relationships
No abstract prepared.
-
Modified Sierpinski Fractal Antenna
Fractal antennas have the potential to provide multi-band solution through the property of self similarity that the fractal shape possess. This thesis deals with some modifications of the original Sierpinski fractal patch antenna, providing additional parameters to optimize in order to get the …
-
Modified Gravity with Torsion
… thesis focuses on applications of a particular modified gravity theory, the extended Weyl Gauge Theory (eWGT), that was recently developed by Prof. Lasenby and Prof. Hobson. The applications corresponds to subsets of the full theory that are applicable to different cosmological and astrophysical …
-
Topics in modified gravity
The key element of modern cosmology is the assumption that the General Theory of Relativity (GR) is the correct theory of gravitation. It replaced the Newtonian theory of gravity which was presented in the Principia in 1687. The fundamental idea in GR is that gravity is a manifestation of the …
-
Modified principal components regression
… of comparison. The results indicate that the modified principal components estimator will perform better than either of the other two estimators over a wide range of orientations and signal-to-noise ratios and that it provides a reasonable compromise choice when the orientation is unknown.
-
Siloxane modified engineering thermoplastics
Three block copolymer systems where one block was that of an engineering thermoplastic were examined. The first was that of polysulfone-polyarylester block copolymers where glassy-crystalline block copolymers were synthesized and characterized. The morphology of the block copolymers could be …
-
Characterization of modified polyimide adhesives
An addition polyisoimide prepolymer was modified through the incorporation of metal particles. The response of this metal/polymer composite to mechanical vibrations and the passage of electric current was measured. Model aluminum conductor bar joints containing this material were assembled and …
-
Modified Stochastic Sine-Gordon Equation
The main focus of my dissertation is the Modified Stochastic Sine-Gordon Equation: utt = 2uxx − ut − sin(|u|^(&gamma)) + b(u, du/dt)dW/dt where &gamma > 0 is the parameter of the power of non-linearity, &delta &ge 0 is the magnitude of non-linearity, &alpha> 0 be the damping parameter, and &sigma …
-
Astrophysical tests of modified gravity
… and this has prompted a theoretical study of modified theories of gravity that can self-accelerate on large scales. Indeed, the next decade will be an exciting era where several satellites will probe the structure of gravity on cosmological scales and put these theoretical predictions to the …
-
Aspects of Screened Modified Gravity
… and these have motivated various theories of modified gravity that challenge general relativity. In order to pass the stringent observational tests on a solar system level, the deviation of modified gravities from general relativity must be suppressed. This is known as screening, and different …
-
Zeolite-Modified Fischer-Tropsch Synthesis
The improvement of the gasoline selectivity and quality with the addition of HZSM-5 to the Fe-FT process is evident from literature. The catalytic performance of the combined Fe-FT/HZSM-5 system has been observed to decline with time-on-stream, attributed to the migration of alkali from the Fe-FT …
-
Immunoassays with chemically modified bacteriophage
… and proteins. Phage particles that have been modified by attaching some molecule onto their surface are sensitive to antibodies directed against the coupled chemical moiety. Furthermore, the inactivation of the modified phage by antibody can be inhibited by free antigen, and this provides a …
-
Cavity modified atom-photon interaction
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1989.
-
Modified taxols as anticancer agents
… free radical conditions. Biological testing of modified taxols showed that substitution of the C-2' hydroxyl removed biological activity but that C-2' acyl groups were readily removed vivo. The water soluble 2'-βalanyItaxol possessed in vivo activity equal to that of taxol. Substitution of the …
-
Rheology of polyelectrolyte multilayer modified suspension
… Self-assembled polyelectrolyte multilayer modified colloids are a relatively new and promising colloidal system that is expected to overcome the previousmentioned drawbacks of the established systems. For the first time, this thesis explores themicro-macro interactions of …
-
Corrosion resistance of modified β-Eucryptite
The corrosion resistance of chemically modified β-eucryptite (Li<sub>0.41</sub>Mg<sub>0.035</sub>AlP<sub>0.52</sub>Si<sub>0.48</sub>0₄) having low expansion anisotropy and a near zero coefficient of thennal expansion was evaluated. Samples were exposed to aqueous hydrochloride acid at temperatures …
-
Mechanical Properties of Polymer Modified Mortar
The mechanical properties of the polymer-modified mortar are markedly improved over conventional cement mortar. We utilized recycled ABS in powder form and a polymer latex emulsion, polymer percentage ranges from 0 to 25 percent by polymer/cement ratio were investigated. The mechanical properties …
-
Planar detection using modified expectation maximization
… is impractical which leads to the proposal of a Modified Expectation Maximization (MEM) algorithm. The MEM algorithm presented replaces the traditional maximization step with an optimization based maximization step or a Kalman Filter based maximization step. In addition to this, recommendations …
Page 1 of 601