150 research outputs found
Investigation of Use of Preformed, Compressed Neoprene Seals in Joints of Concrete Bridge Decks
Progressive deterioration and staining of concrete bridge substructures and erosion of abutments may, in many instances, be attributed to the leakage of bridge deck joints. The primary difficulty in maintaining a properly sealed joint is the continual expansion and contraction of the bridge spans. Joint seals, of course, must remain in contact with both faces of the disjointed sections and remain flexible at all temperatures encountered.
A study was initiated by the Division of Research for the specific purpose of evaluating the performance of preformed, compressed neoprene seals and to compare the performance of these seals with the performance of conventional joint sealers. This report is based on a field inspection of sealed joints in numerous Kentucky bridges, and the conclusions are derived from the observed performance of formed, sawed, or armored-edge joints sealed with conventional or neoprene seals. Between 1963 and 1965, neoprene seals were installed in one Lexington bridge, two Louisville bridges, and most of the Central Kentucky (Bluegrass) Parkway bridges. These seals, therefore, had been in service from two to three years at the time of field inspections.
It was observed that formed and sawed joints inevitably spall thereby making it difficult for any sealant to adequately seal the joints. Armored-edge joints, when sealed with neoprene seals, were observed to provide the best combination to perform the intended function of joint and seal. The added expense of such an installation may be justified from the standpoint of reduced maintenance costs
Pectin Relations of Sclerotinia cinerea
Volume: 70Start Page: 221End Page: 22
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From Cubism to Non-Objective Art: Sonia and Robert Delaunay's Exchange with Russian Artists
This dissertation examines the early history and development of Cubism, Orphism and Non-Objective art through the artistic exchange between Sonia and Robert Delaunay and Russian avant-garde artists. Previous scholars have studied the work of the Delaunays primarily within the context of isolated movements and geographical confines. This approach has prevented us from fully grasping the ways in which the Delaunays’ work influenced the wider, international avant-garde phenomenon. My methodology is the first to reconsider the Delaunays’ pivotal shift from Cubism to Non-Objective art, and how this influenced other artists, resituating them within the transnational history of the avant-garde in the early twentieth century.
By analysing published and archival sources, international exhibitions and their critical reception, and the exchange of ideas between Russia and Europe, this project presents an innovative understanding of how pre-war artists experimented with Non-Objective art. Taken together, my research advances scholarship on pre-1914 avant-gardism, the Russian avant-garde, Non-Objective art, and Sonia and Robert Delaunay, broadening discussions of influence and revealing new nuances of crucial developments in numerous artists’ approaches to visual art.
This dissertation provides a much needed study of the Delaunays’ dialogue with Russian artists, who were instrumental in the development of abstract art and who marked a significant contribution to international artistic discourse. Moreover, it challenges the established narrative that Robert alone was the primary stimulus for Russian artists. Instead, by shifting the focus to a broader pan-European and Russian perspective, my work sheds new light on the involvement of Sonia, as well as Robert, in these changes
Tyrosinase of FungiTyrosin in the Fungi: Chemistry and Methods of Studying the Tyrosinase Reaction.C. W. Dodge
Volume: 68Start Page: 392End Page: 39
Carbohydrate Economy of Cacti
Volume: 69Start Page: 91End Page: 9
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