Browsing MIT Theses by Title
Now showing items 61802-61821 of 61935
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X Disease | Disease X: Medical Mystery-Solving and Epidemiological Change
(Massachusetts Institute of Technology, 2022-09)This thesis addresses epidemiological knowledge-making in the face of new, unknown, emerging diseases. It uses two cases, Australian X Disease of the early 1900s and Disease X of the dawning 2000s, to broadly interrogate ... -
X-Conference : reinventing a teleconferencing system
(Massachusetts Institute of Technology, 2001)In looking forward to more natural we can anticipate that the teleconferencing system of the future will enable participants at distant locations to share the same virtual space. The visual object of each participant can ... -
X-ray absorption by the intergalactic medium
(Massachusetts Institute of Technology, 2001)I have studied the intergalactic medium (IGM) located in galaxy clusters and groups via the so-called "X-ray Forest" the X-ray absorption lines produced by the hot IGM. I gave a semi-analytic calculation of the X-ray forest ... -
X-ray absorption spectroscopy of actinide speciation in solid solutions
(Massachusetts Institute of Technology, 2003)It is widely recognized that the behavior of actinides in the environment is dictated by their speciation, or chemical form. It is therefore imperative to have a clear understanding of a waste form or environmental contaminant ... -
X-ray and neutron scattering studies of the Rb₂MnF₄ and Cu₁â‚‹õxMgx̳GeO₃ in an external magnetic field
(Massachusetts Institute of Technology, 2001)This thesis presents results of two scattering studies of low dimensional magnetic materials. The first is a neutron scattering study of Rb2MnF4, a nearly ideal two-dimensional square lattice Heisenberg antiferromagnet ... -
X-ray astronomy with CCDs : calibration of the advanced CCD imaging spectrometer and observations of rotation-powered pulsars
(Massachusetts Institute of Technology, 2000)This dissertation concerns the use of charge coupled devices (CCDs) for X-ray astronomy. Part I of this thesis focuses on the calibration of the Advanced CCD Imaging Spectrometer (ACIS), one of the two primary focal plane ... -
X-ray CCDs for space applications : calibration, radiation hardness, and use for measuring the spectrum of the cosmic X-ray background
(Massachusetts Institute of Technology, 1995) -
X-Ray crystal structure of a ribosomal protein S6, S15, S18 : rRNA complex from T. thermophilus, and investigation of conformational changes in 16S rRNA fragments from B. stearothermophilus during ribonucleoprotein assembly
(Massachusetts Institute of Technology, 2012)The X-ray crystallographic structure of a fragment of the 30S ribosomal subunit from Thermus thermophilus containing ribosomal proteins S6, S15, S18, and a minimal rRNA binding site (T4 RNP) containing two different ... -
X-ray determination of the solid solubility of silver in cadmium
(Massachusetts Institute of Technology, 1937) -
X-ray diagnostics for the Levitated Dipole Experiment
(Massachusetts Institute of Technology, 2004)Initial plasma experiments in the Levitated Dipole Experiment focus on producing hot electron, high beta plasmas using a supported dipole configuration. Plasmas are created using multifrequency ECRH and it is therefore ... -
X-ray diffraction analysis of the structure of deoxyribonucleic acid
(Massachusetts Institute of Technology, 1955) -
X-ray diffraction by elastically deformed crystals
(Massachusetts Institute of Technology, 1949) -
X-ray diffraction study of a three-component lamellar phase
(Massachusetts Institute of Technology, 1995) -
An x-ray diffraction study of the structure of glass.
(Massachusetts Institute of Technology, 1968) -
An X-ray investigation of some low-temperature solid phases of the systems Cu2S-Sb2S3, Cu2S-As2S3, Cu2S-FeS, and Cu2S-CuS
(Massachusetts Institute of Technology, 1953) -
An x-ray investigation of the lambda point and a determination of the Debye-Waller factor in potassium borohydride
(Massachusetts Institute of Technology, 1962) -
X-ray lithographic alignment and overlay applied to double-gate MOSFET fabrication
(Massachusetts Institute of Technology, 2003)Double-gate MOSFETs represent a significant solution to transistor scaling problems and promise a dramatic improvement in both performance and power consumption. In this work, a planar lithographic process is presented ... -
X-ray Micro-Computed Tomography and Deep Learning Segmentation of Progressive Damage in Hierarchical Nanoengineered Carbon Fiber Composites
(Massachusetts Institute of Technology, 2021)Advanced composite laminates comprised of carbon (micro) fiber reinforced polymer (CFRP) have become widespread in modern high-performance aerospace structures, providing high, tailorable mass-specific stiffness and strength. ... -
X-ray periodicities in sources observed by the RXTE ASM
(Massachusetts Institute of Technology, 2005)The X-ray intensities measured from 230 X-ray sources observed by the RXTE All-Sky Monitor (ASM) were analyzed for periodic behavior. The ASM has been observing sources for nine years in the 1.5-12 keV energy range. In ... -
X-ray phase contrast imaging of preclinical atherosclerosis
(Massachusetts Institute of Technology, 2016)Atherosclerosis is the leading causes of mortality and morbidity in the world. While there are a plethora of methods for treating clinical atherosclerosis, the primary cause of mortality is acute coronary syndrome (ACS) ...
