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Three-Dimensional Aberration-Corrected Scanning Transmission Electron Microscopy for Biology

Description: Recent instrumental developments have enabled greatly improved resolution of scanning transmission electron microscopes (STEM) through aberration correction. An additional and previously unanticipated advantage of aberration correction is the greatly improved depth sensitivity that has led to the reconstruction of a three-dimensional (3D) image from a focal series. In this chapter the potential of aberration-corrected 3D STEM to provide major improvements in the imaging capabilities for biologi… more
Date: January 1, 2007
Creator: De Jonge, Niels; Sougrat, Rachid; Pennycook, Stephen J; Peckys, Diana B & Lupini, Andrew R
Partner: UNT Libraries Government Documents Department
open access

Pestoides F, and Atypical Yersinia pestis Strain from the Former Soviet Union

Description: Unlike the classical Yersinia pestis strains, members of an atypical group of Y. pestis from Central Asia, denominated Y. pestis subspecies caucasica (also known as one of several pestoides types), are distinguished by a number of characteristics including their ability to ferment rhamnose and melibiose, their lacking the small plasmid encoding the plasminogen activator (pla) and pesticin, and their exceptionally large variants of the virulence plasmid pMT (encoding murine toxin and capsular an… more
Date: January 5, 2007
Creator: Garcia, E.; Worsham, P.; Bearden, S.; Malfatti, S.; Lang, D.; Larimer, F. et al.
Partner: UNT Libraries Government Documents Department
open access

Cavity Microwave Searches for Cosmological Axions

Description: This chapter will cover the search for dark matter axions based on microwave cavity experiments proposed by Pierre Sikivie. We will start with a brief overview of halo dark matter and the axion as a candidate. The principle of resonant conversion of axions in an external magnetic field will be described as well as practical considerations in optimizing the experiment as a signal-to-noise problem. A major focus of this chapter will be the two complementary strategies for ultra-low noise detectio… more
Date: January 22, 2007
Creator: Carosi, G. & van Bibber, K.
Partner: UNT Libraries Government Documents Department
open access

Electron Holography of Electromagnetic Fields - Recent Theoretical Advances.

Description: It has been shown in this work that the Fourier space approach can be fruitfully applied to the calculation of the fields and the associated electron optical phase shift of several magnetic and electrostatic structures, like superconducting vortices in conventional and high-T{sub c} superconductors, reverse biased p-n junctions, magnetic domains and nanoparticles. In all these cases, this novel approach has led to unexpected but extremely interesting results, very often expressed in analytical … more
Date: January 1, 2007
Creator: Beleggia, M.; Pozzi, G. & Tonomura, A.
Partner: UNT Libraries Government Documents Department
open access

Self-Organized Criticality and Cellular Automata

Description: Cellular automata provide a fascinating class of dynamical systems based on very simple rules of evolution yet capable of displaying highly complex behavior. These include simplified models for many phenomena seen in nature. Among other things, they provide insight into self-organized criticality, wherein dissipative systems naturally drive themselves to a critical state with important phenomena occurring over a wide range of length and the scales. This article begins with an overview of self-o… more
Date: January 1, 2007
Creator: Creutz, M.
Partner: UNT Libraries Government Documents Department
open access

Pulse Radiolysis in Supercritical Rare Gas Fluids

Description: Recently, supercritical fluids have become quite popular in chemical and semiconductor industries for applications in chemical synthesis, extraction, separation processes, and surface cleaning. These applications are based on: the high dissolving power due to density build-up around solute molecules, and the ability to tune the conditions of a supercritical fluid, such as density and temperature, that are most suitable for a particular reaction. The rare gases also possess these properties and … more
Date: January 1, 2007
Creator: Holroyd, R.
Partner: UNT Libraries Government Documents Department
open access

[News Story Log: January 1 to June 30, 2007]

Description: Logbook from the KXAS-TV/NBC station in Fort Worth, Texas, documenting the names, locations, and run-times of video-taped news segments that aired each day from January through June in 2007.
Date: 2007-01/2007-06
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
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