Thesis (Ph. D.)--University of Wisconsin--Madison, 1928. / Cover title. Reprinted from the Journal of the American chemical society, v. 45, December, 1923, p. [2910]-2917, v. 48, 1926, p. [3081]-3092, and v. 49, 1927, p. [2920]-2934. eContent provider-neutral record in process. Description based on print version record.

Thesis (M.S.)--Ohio State University, 1966. / Includes bibliographical references. Available online via OhioLINK's ETD Center

No description available.

Thesis (M.S.)--University of Wisconsin--Madison, 1966. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

No description available.

LD2668 .T4 1947 H37 / Master of Science

Thesis (Ph. D.)--Oregon State University, 2007. / Printout. Includes bibliographical references (leaves 116-124). Also available on the World Wide Web.

With 500,000 coronary artery bypass procedures performed each year in the United States, and only one-third of patients possessing suitable autologous grafts, there is a clinical need for tissue engineered blood vessels (TEBVs). The overall goal of this project was to develop a one- step approach to rapidly produce entirely cell- derived tubular tissue constructs without scaffold materials. To achieve this goal, we developed "centritubing"-- a system based on applying centrifugal force to suspended cells to create a tube-shaped cellular aggregate. Briefly, rat aortic smooth muscle cells were injected into cylindrical polycarbonate spinning chambers and then spun to apply centrifugal force, which pelletted the cells on the inner wall of the chamber. After three days in culture with growth medium, the cells remodeled to form tissue tubes. In previous work we have shown, in principle, that centritubing produces tubular constructs, however tissue tube production was not consistently achieved. The first objective of this study was to develop modifications to the centritubing device that would lead to consistent lumen diameter, rapid cellular aggregation into a tube construct, and an improved success rate of tube formation. The second objective was to investigate cellular parameters that contribute to tubular tissue construct formation using centritubing. Prior to changes in manufacturing of the centritubing device and culture system, the success rate of centritubing was inconsistent. After these changes, the success rate of tubular construct formation improved to 85% (11/13). Noteworthy modifications to the centritubing device included the addition of a central mandrel as a substrate for tissue contraction, development of a smoother seeding surface, and manufacture of a reusable culture chamber. The results of this study support the proof of concept for centritubing as a device for rapid production of tubular tissue constructs and provide insight for future progress using the centritubing methodology.

No description available.

Much is known about the atomic/molecular theories that govern adhesion as well as the macroscopic aspects and properties of adhesion. However, adhesion in the microparticle regime is poorly characterized. We report on experiments that use centrifugal force to remove polystyrene (PS) particles from the surface of a high-speed titanium rotor operated in vacuum. This unique rotor can apply forces far greater than other centrifugal force methods or related techniques using atomic force spectroscopy. The mode of attachment, whether particles were located on the windward side versus leeward side of the spinning rotor, time spent in vacuum prior to experiments, and surface imperfections all showed an effect on adhesion. Our observations show initial agreement with published results from atomic force spectroscopy experiments. We conclude that the liquid used to help suspend and apply the PS particles greatly influences the total adhesive forces present in the system. This in turn provides valuable clues as to the nature of the adhesive interaction.