Young Woman with a Veena

Young Woman with a Veena

Access: Use of this item is restricted to the UNT Community.
Date: unknown
Creator: Varma, Ravi
Description: The subject of the painting is a woman playing a musical instrument. She is seated on the floor with her legs crossed. She wears loose white pants and a decorated blouse with a patterned stole.
Contributing Partner: UNT College of Visual Arts + Design
Uniform bulk Material Processing using Multimode Microwave Radiation

Uniform bulk Material Processing using Multimode Microwave Radiation

Date: June 18, 1999
Creator: Varma, Ravi & Vaughan, Worth E.
Description: An apparatus for generating uniform heating in material contained in a cylindrical vessel is described. TE{sub 10}-mode microwave radiation is coupled into a cylindrical microwave transition such that microwave radiation having TE{sub 11}-, TE{sub 01}- and TM{sub 01}-cylindrical modes is excited therein. By adjusting the intensities of these modes, substantially uniform heating of materials contained in a cylindrical drum which is coupled to the microwave transition through a rotatable choke can be achieved. The use of a poor microwave absorbing insulating cylindrical insert, such as aluminum oxide, for separating the material in the container from the container walls and for providing a volume through which air is circulated is expected to maintain the container walls at room temperature. The use of layer of highly microwave absorbing material, such as SiC, inside of the insulating insert and facing the material to be heated is calculated to improve the heating pattern of the present apparatus.
Contributing Partner: UNT Libraries Government Documents Department