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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 37 for “"porcupine"”.
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Biology of the Porcupine (Erethizon Dorsatum) in northwestern South Dakota
… taxonomic characteristics were determined for porcupines (Erethizon dorsatum) in northwestern South Dakota. The summer home ranges were 158.2 ha for adult females, 90.4 ha for juveniles, and 57.9 ha for adult males. The population was 34 percent adult males, 16 percent juvenile males, 34 …
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The Role of the X-chromosomal Porcupine Homolog Gene in Mouse Development
WNT ligands are secreted proteins that act as signals between cells. WNTs activate several interconnected signaling pathways that are required for embryonic development as well as tissue homeostasis in adults. The X-chromosomal Porcn gene encodes a membrane-bound O-acyl transferase that is required …
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Hierarchical summer habitat selection by the North American porcupine in western Montana
The North American porcupine (Erethizon dorsatum) has continually been a species of low priority for research and conservation efforts in the western United States. While many porcupine populations have been studied in North America, little to no research has been done on porcupines in western …
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Hierarchical summer habitat selection by the North American porcupine in western Montana
The North American porcupine (Erethizon dorsatum) has continually been a species of low priority for research and conservation efforts in the western United States. While many porcupine populations have been studied in North America, little to no research has been done on porcupines in western …
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Structural Investigations of Porcupine and Dispatched-1 in Wnt and Hedgehog Morphogen Biogenesis
… membrane-bound O-acyltransferase Porcupine (PORCN) is indispensable for Wnt binding to its receptor Frizzled, which triggers signaling. I report four cryo-EM structures of human PORCN: the complex with its substrate palmitoleoyl-coenzyme A, the complex with the PORCN inhibitor …
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Petrogenetic study of the Porcupine Lake mafic intrusive complex, Trinity terrane, northern California
The Early Devonian (404 +/- 3 Ma) Porcupine Lake mafic intrusive complex of the Trinity terrane consists primarily of ultramafic-mafic plutonic and dike lithologies. The plutonic rock forms steep intrusive contacts with adjacent Ordovician peridotite, and consists of basal layered peridotite, …
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A quantitative evaluation of porcupine-habitat relationships in the Kalum Valley, B. C.
… approach to an applied management problem: porcupine-habitat interactions in the Kalum Valley B.C. In recent years an alarming amount of damage caused by the winter feeding of porcupines has been occurring on the north coast of B.C. There is concern that silvicultural practices, such as …
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Investigation of porcupine bezoar extract (Hystrix Brachyuran) on hela cell combined with electroporation method
… or extract which is available in Malaysia Porcupine Bezoar (Hystrix Brachyuran) were used. This extract has the potential as an anti-proliferation agent, which is useful in anti-cancer application. The experiment suggests that the best concentration for Porcupine Bezoar Extract (PBE) was at …
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Laboratory testing and design of a mill for the treatment of a gold ore from Porcupine, Ontario
Thesis: M.S., Massachusetts Institute of Technology, Department of Mining Engineering and Metallurgy, 1917
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Discovery and Characterization of Novel Chemical Inhibitors of Wnt Ligand Production with Implications for Anti-Cancer Therapy
… Membrane Bound O-Acyltransferase family member: Porcupine. Herein we postulate that IWPs function by binding to and disrupting Porcupine?s active site, preventing subsequent acylation of Wnt ligands necessary for downstream pathway activation. Further SAR studies reveal first generation IWP lead …
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How land use influences wildlife occupancy and species richness in the City of Cape Town
… seven of which are native to the region. Cape porcupine (Hystrix africaeaustralis; n = 222), Water mongoose (Atilax paludinosus; n = 27) and Grey squirrel (Sciurus carolinensis; n = 85) were the most frequently detected species across all three land–use types, with the Cape porcupine the most …
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Dwelling in the districts: the participation and perspectives of mapping traditional communities on Pine Ridge
… to "map" the indigenous tiospaye groups in the Porcupine District, and ends up gathering narrative representations of place rather than explicitly cartographic ones, a reification of the theorized "dwelling space." A discussion of the mapping project leads to a wider explication of the general …
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Functional Genomics Based Interrogation of Cell-Fate Determination Pathways
… Chemicals that targeted the Wnt acyltransferase Porcupine or that restored primary cilia length by inhibiting the tubulin deacetylase HDAC6 (histone deacetylase 6) countered deviant pathway activities driven by Stk11 loss. My study demonstrates that Stk11 is a critical mediator in both the Hh and …
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Optimization of thin-wall cylindrical shells with compliant cellular-solid cores
… cellular core, as for example, in plant stems, porcupine quills, or hedgehog spines. Previous studies have suggested that a compliant core increases the elastic buckling resistance of a cylindrical shell over that of a hollow cylinder of the same weight. In this thesis, we extend the …
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Thewingless Signaling Pathway Specifies Fates in the Drosophila Embryonic CNS
… components of the wingless signaling pathway, porcupine, dishevelled, and armadillo also positively regulate NB formation and specification. On the other hand, zeste-white 3 acts oppositely in both processes. It was further demonstrated that the wingless signaling pathway activates the …
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The wingless signaling pathway specifies fates in the Drosophila embryonic CNS
… components of the wingless signaling pathway, porcupine, dishevelled, and armadillo also positively regulate NB formation and specification. On the other hand, zeste-white 3 acts oppositely in both processes. It was further demonstrated that the wingless signaling pathway activates the …
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The application of machine learning and 3D photogrammetry for cold-water coral habitat classification in the NE Atlantic
… optical datasets. Here, CWC reef habitats in the Porcupine Bank Canyon and the Belgica Mound Province, in the Porcupine Seabight, SW of Ireland were reconstructed in 3D using Structure-from-Motion (SfM) photogrammetry. Point clouds, meshes, orthomosaics and digital elevation models (DEMs) were …
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Taxonomy and biology of deep-sea polychaetes: temporal variability in polychaete assemblages of the abyssal NE Atlantic Ocean
… with USNEL box core (0.25 m2), were studied from Porcupine Abyssal Plain, NE Atlantic Ocean from 8 cruises between August 1989 and September 1998. A taxonomic study at species level was carried out for the two most abundant families: Cirratulidae and Spionidae. 15 different morphotypes of …
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The tin chok textile and weaving tradition of Mae Chaem, Thailand
… technique whereby the yarn is picked out using a porcupine quill), which originate from the Mae Chaem area of Chiangmai province in northern Thailand. It represents the first systematic examination of the culture and tradition of the Mae Chaem hand weavers, one that analyses and contextualises …
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