Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 322 for “"amphibian"”.
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Gene Activation in Early Amphibian Development
<p>The amphibian embryo has been a fascinating object for study for a century or more. It is large in size, widely available, and easy to observe throughout embryogenesis. The control of early development and the role of the genes have also been investigated for a long time. The combination of …
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Animal-Vegetal Balance in Amphibian Development
Made available in DSpace on 2014-12-04T22:45:46Z (GMT). No. of bitstreams: 1 0005996.pdf: 2631520 bytes, checksum: 7499a2a606c71dad3ca6c8acd93c5de2 (MD5) Previous issue date: 1953
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Amphibian urbanism in Dhaka’s contested wetlands
… three generative concepts (interstitial power, amphibian operations, and endured toxicities) to think through their complex contributions to the production of sustainable urban wetlands. Tracing the negotiations among state bureaucrats and foreign and local consultants, I explore the …
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Comparative genomics of bacteria from amphibian skin associated with inhibition of an amphibian fungal pathogen Batrachochytrium dendrobatidis
Chytridiomycosis is a fungal skin disease in amphibians that is primarily caused by Batrachochytrium dendrobatidis (Bd). We analyzed whole genome sequences of 40 bacterial isolates that had been previously cultured from the skin of four amphibian species from Virginia, USA, and tested for their …
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Measuring and modeling the effects of temperature on the amphibian chytrid fungus and assessing amphibian skin bacterial communities
… conservation efforts. One example of this is the amphibian chytrid fungus, Batrachochytrium dendrobatidis (Bd), which causes the disease chytridiomycosis and has been linked to amphibian populations declines worldwide. There have been numerous attempts to mitigate the effects of Bd on amphibians, …
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Studies in Amphibian Limb Development and Regeneration
… been performed to investigate the phenomenon of amphibian limb regeneration. However, these past experiments have not attempted to apply rigorous statistical methods to analyze specific whole limb and regeneration blastema events. The most interesting of these events are those that occur during …
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Discovery of bioactive peptides from amphibian skin secretion
During the long evolutionary process, amphibians have developed their unique defence mechanisms. Among these, bioactive peptides in special skin secretions produced by frogs have been considered to be one of the rich natural sources for developing new drugs in the future.<br/><br/>In this thesis, …
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Organization of RNA Transcription Units in Amphibian Oocytes
Finally, the mechanism of hnRNP-G recruitment to the lampbrush loops is investigated. Interestingly, the RNA binding domain of the protein is not required for recruitment specificity to the loops. Instead, a poorly characterized portion of the C-terminus of the protein is required for this process.
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Synthesis of Amphibian Alkaloids and Development of Acetaminophen Analogues
… strategies for the construction of two novel amphibian alkaloids. In addition, the efforts have led to the large-scale process for the preparation of a novel analgesic compound. The regioselective ring opening of lactones (δ-valerolactone and γ-butyrolactone) with aryllithium reagents is …
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Studies on Lymphokine Activity in the Amphibian Rana Temporaria
… experiments which demonstrate that an anuran amphibian, Rana temporaria, is capable of elaborating a range of soluble mediators, analogous to mammalian lymphokines. In vitro stimulation of Rana temporaria leucocytes, with both antigens and mitogens, was employed. The supernatants from such …
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Effect of Spray Rails on Takeoff Performance of Amphibian Aircraft
<p>Amphibian aircraft have seen a rise in popularity in the recreational and utility sectors due to their ability to take off and land on both land and water, thus serving a myriad of purposes such as aerobatics, surveillance, and firefighting. The design of such seaplanes requires to be both …
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Amphibian and Reptile Community Responses to Forest and Riparian Disturbance
… wildlife, particularly cryptic species such as amphibians and reptiles. Previous studies of herpetofauna within SMZs have focused on one or a few stream-associated species, and questions remain regarding variation among species or guilds and what role SMZs serve toward conservation of …
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Persistence of ranavirus in an East-Central Illinois amphibian community
Amphibians are declining globally, and infectious disease is one of their primary threats. Ranaviruses infect cold-blooded vertebrates, with FV3-like ranaviruses being associated with amphibian mortality events across much of North America. The frequency of these mortality events is unknown, due to …
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Investigation of insulinotropic and cytoprotective effects of selected amphibian skin peptides
… have demonstrated the anti-diabetic effects of amphibian peptides such as tigerinin-1R, magainin-AM2, and alyteserin-2a. However, the mechanisms underlying their actions are not yet fully understood. Moreover, the protective effect of this study aims at the confirmation of the in vitro and in …
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