Biochemistry Commons^™

Modulated Structures In Electrodeposited Superconducting Ba(1-X)K(X)Bio(3), Chad Bryant Huffman

Theses, Dissertations and Capstones

Compositionally modulated crystals of the superconductor Ba_1-x K_xBiO₃ have been grown electrochemically. Modulation was produced through control of the deposition potential.

Modulated crystals were imaged using optical microscopy, backscattered SEM, and STM. The expected linear relationship between the amount of time that current was applied and the modulation thickness was observed, and the growth rates were determined.

Multilayers were differentially etched using an EDTA solution. Etched and unetched samples were imaged using backscattered SEM.

The transition temperature of a modulated sample was determined by SQUID magnetometry to equal the bulk value.

Use Of The (3)H-Tetracycline Rat Model In The Study Of Skeletal Compartmentalization And Metabolism Of Calcium In The Maturing Male And Female Rat And The Role Of The Skeleton In Calcium Homeostasis In The Adolescent Male Rat, Darrin Lee Demoss

Theses, Dissertations and Capstones

The (3)H-tetracycline bone labeling procedure was employed to monitor bone resorption from urinary loss curves in male and female rats of various ages. In addition, whole body dry skeletal mass and the loss of (3)H-tetracycline from individual bones was determined. It was found that the dry skeletal mass/body mass ratio of 24-week-old females was 30-40% greater than that for males. The urinary loss of (3)H-tetracycline was described by a double exponential equation indicating the presence of two distinct and independent exchangeable bone compartments. Both compartments decrease in size with age, but their label loss activities were different. The label loss …