465 Matching Results

Search Results

prev Results: 457 - 465
open access

Mixed Field Dosimetry Using Focused and Unfocused Laser Heating of Thermoluminescent Materials

Description: The incidents at the Three Mile Island and Chernobyl have triggered the need for better personnel dosimetry methods in mixed radiation fields. This thesis presents a detailed computational study of a new method for mixed radiation field dosimetry using single-element TL dosimeters with pulsed laser heating schemes. The main objective of this study was to obtain an optimum heating scheme so that the depth-dose distribution in a thick TL dosimeter could be accurately determined. The major parts o… more
Date: March 1, 1994
Creator: Han, Seungjae
Partner: UNT Libraries Government Documents Department
open access

Perceptions of Social Support among Children with Attention Deficit Hyperactivity Disorder, Pre- and Post-Parent Training

Description: The literature demonstrates that children with Attention Deficit Hyperactivity Disorder (ADHD) often experience peer rejection as a result of their difficulties with interpersonal interactions. The manner in which children with ADHD process social information and the extent to which social difficulties may adversely impact these children has remained unclear. In the first part of the study, the perceptions of social support between boys (ages 7 to 11 years) with and without ADHD were compared. … more
Date: August 1994
Creator: Askins, Martha Ann
Partner: UNT Libraries
open access

Determination of toxic material penetrations for wildland respirator filters

Description: Thousands of wildland firefighters are exposed to high levels of toxic materials every year. Carbon monoxide, formaldehyde and acrolein gases, along with high particulate concentrations, are the major toxics encountered. Currently, the only respiratory protection wildland firefighters use is a bandanna over the mouth and nose. In this study, a modem activated carbon cartridge with an electrostatic prefilter was compared to a typical bandanna for its ability to filter wildland smoke toxics such … more
Date: May 1, 1994
Creator: Foote, Kenneth Lawrence
Partner: UNT Libraries Government Documents Department
open access

Plasma destruction of North Carolina`s hazardous waste based on hazardous waste generated between the years of 1989 and 1992

Description: The purpose of this research is to analyze the applicability of the plasma waste destruction technology to North Carolina hazardous waste streams. This study outlines the current regulations, existing technologies, and innovative technologies being considered as hazardous waste treatment alternatives. From this foundation, the study proceeds to identify the superiority of the plasma waste destruction technology. Specific areas of discussion include: temperature capabilities, waste residence tim… more
Date: December 31, 1994
Creator: Williams, D.L.
Partner: UNT Libraries Government Documents Department
open access

Measurements of granular flow dynamics with high speed digital images

Description: The flow of granular materials is common to many industrial processes. This dissertation suggests and validates image processing algorithms applied to high speed digital images to measure the dynamics (velocity, temperature and volume fraction) of dry granular solids flowing down an inclined chute under the action of gravity. Glass and acrylic particles have been used as granular solids in the experiment. One technique utilizes block matching for spatially averaged velocity measurements of the … more
Date: December 31, 1994
Creator: Lee, J.
Partner: UNT Libraries Government Documents Department
open access

A Study of the Processing Properties of Hard-Particle Reinforced Composite Solders

Description: The microstructural, mechanical and thermal properties of various composite solder formulations were investigated. Special interest was given in observing the processing properties, microstructural characteristics, fatigue behavior, tensile strength, and the effect of environmental ageing on the composite solder formulations. The solderability parameters wetting and speed of soldering, reflow temperature, and the thermal stability of the resulting composite solder were also examined.
Date: May 1994
Creator: Calderon, Jose Guadalupe
Partner: UNT Libraries
open access

Imagery and Form

Description: This paper discusses the integration of imagery and form in the author's works, wheel thrown pottery intended to make an individualized statement. Steven L. Phillips discusses the process of making these forms and the imagery they contain, drawing connections to philosophical concepts.
Date: May 1994
Creator: Phillips, Steven L.
Partner: UNT Libraries
open access

me

Description: Artist Daniel Pope at 2024 MFA Exhibition, entitled "Parapolitical Aesthetics" in the Cora Stafford Gallery, South, UNT Art Building,1201 W Mulberry St, Denton, TX from April 17 to April 21, 2024. Parapolitical Aesthetics is an exhibition that presents a critical exploration of contemporary society through various mediums, challenging traditional art practices and highlighting the pervasive influence of screen-based media and parapolitical power structures.
Date: 1994
Creator: Pope, Daniel
Partner: UNT College of Visual Arts + Design
Back to Top of Screen