Now showing items 1-10 of 1084
Functionalized single-walled carbon nanotubes for composite applications and radiation studies
This dissertation offers a hopeful advance towards our future in space. Materials for space applications need to be strong, lightweight, and be multifunctional. Single-walled carbon nanotubes (SWNTs) have various properties that fit these criteria as a novel material for space and biomedical applications. To utilize SWNTs for this purpose, new chemical ...
Development of Image Mapping Spectrometer (IMS) for hyperspectral microscopy
A snapshot hyperspectral imaging device - Image Mapping Spectrometer (IMS) - has been developed for hyperspectral microscopy. The IMS replaces the camera in a digital imaging system, allowing one to add high speed snapshot spectrum acquisition capability to a variety of imaging modalities, e.g. microscopy, endoscopy, macroscopic imaging, to maximize ...
K*(892)0 Lambda and K+ Sigma* (1385)- Photoproduction on the Deuteron
Thirteen N* states have been well-established according to the Particle Data Group, but some relativized quark models predict that many more N* resonances exist. Diquark models predict that the N* spectrum is limited by a correlated quark-pair in the nucleon, but there is strong evidence for the existence of the [Special characters omitted.] (1900)** ...
Statistical mechanics of quasispecies theories of molecular evolution
This thesis presents a statistical mechanical analysis of different formulations of quasispecies theory of molecular evolution. These theories, characterized by two different families of models, the Crow-Kimura and the Eigen model, constitute a microscopie description of evolution. These models are most often used for RNA viruses, where a phase ...
A cloud-chamber study of the disintegration of oxygen and nitrogen
A study of the disintegration of nitrogen and oxygen when bombarded by neutrons has been made by means of a cloud chamber. By observing the particles produced in the disintegration of the oxygen and nitrogen nuclei, data have been taken on several phenomena; the energy levels of carbon-13, boron-11, nitrogen-15, nitrogen-16, and carbon-14 have been ...
A study of the magnetic susceptibility of manganese selenide
Abstract Not Available.
Quantitative measurements of individual gold nanoparticle scattering cross sections
The local surface plasmon resonance (LSPR) of noble metal nanoparticles has recently been exploited in numerous applications. The LSPR peak position and linewidth have been studied quite extensively, but the magnitude of the resonance has not received much attention. Analytical solutions to Maxwell's Equations cannot predict the scattering cross ...
Cooperative phenomena of antimicrobial peptides in membranes: A study by neutron and X-ray diffraction
Gene-encoded membrane-active antimicrobial peptides permeablize bacterial plasma membranes without harming the host cells. Furthermore, although most peptides exhibit a broad spectrum of activity against microbes, different peptides preferentially kill different pathogens. Understanding such cell-type specificity is not only fundamental to cell biology ...
The cooling of a surface, due to photoelectric emission
The cooling of a surface when thermionic electrons are emitted has been measured by Richardson and others. The results obtained for tungsten and other metals are consistent with recent determinations of the work functions by thermionic and photoelectric methods. The purpose of the research, here described, was to determine the cooling of a surface ...
Adiabatic thermal changes in dielectrics at low temperatures
The problem set up as the objective of the present thesis is the detection and measurement of adiabatic thermal changes in barium titanate ceramic at low temperatures. Concurrent with this is the problem of devising experimental techniques suitable for the investigation of this phenomenon in other dielectrics at liquid helium temperatures, a temperature ...