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 25 for “"SPG"”.
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The role of pou2/spiel-ohne-grenzen (spg) in brain and endoderm development of the zebrafish, Danio rerio
… established in vertebrates. spiel-ohne-grenzen (spg) is one mutant which interferes with MHB development. Here, I addressed the role of pou2 in brain development by molecular, phenotypical and functional analysis. By genetic complementation and mapping I could elucidate the molecular nature of …
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Preparação de nanopartículas de poli (metacrilato de metila) carregadas com filtros solares por processo mediado por membrana de vidro (SPG)
… factor. This work used glass membrane (SPG) for prepration of nanoemulsions of methyl methacrylate, avobenzone and octocrylene, which were polymerized throught radical miniemulsion polymerizations. The obtained nanoparticles presented narrower size distributions, when compared to those …
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Investigation of the role of polyploidization in glial cells during the development of the drosophila nervous system
… previously determined that subperineurial glia (SPG) of the Drosophila melanogaster nervous system become polyploid by both the endocycle and endomitosis. These are two cell cycle variants employed to produce polyploid cells that differ in the latter undergoing some aspects of mitosis but not …
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Assessment of and improvements to a stereophotogrammetric patient positioning system for proton therapy
… achieved using the stereophotogrammetric (SPG) positioning system is measured, and the shortcomings and errors in using the facemask by the SPG system are measured and analysed. The implementation of improvements made to the SPG system is reported upon, and alternative means of both …
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The development of a real-time photogrammetric system for patient positioning in proton therapy
… development of this new "StereoPhotoGrammetric" (SPG) system, patients will be positioned using CCD cameras and digital photogrammetric techniques. A specially designed mechanical chair will move the patients at the command of the SPG system. The tumour is located relative to reference targets on …
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Determining the differential roles of the dock family of GEFs in drosophila development
… Myoblast city (Mbc; Dock- A) and Sponge (Spg; Dock-B). The target GTPase of the Dock-A subfamily is Rac, which modulates actin dynamics. However, the in vivo GTPase downstream of the Dock- B subfamily remains unclear. Herein we show that the roles of Spg and Mbc are not redundant in the …
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Studies on the interaction of a single domain of protein G from streptococcus with human Fc and Fab
Protein G (SpG) is a Type III bacterial Fc receptor that binds selectively and non-antigenically to both the Fc and Fab regions of IgG. Here studies are described aimed at understanding the individual contributions to complex stability made by amino acid residues known to make contacts with either …
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Three Essays on Adoption and Impact of Agricultural Technologies
… the spillover effects of seed producer groups (SPGs) in Nepal on nearby non-SPG member households. These SPGs were established to produce and sell stress tolerant rice varieties (STRVs) and other improved rice varieties and were trained on a number of improved management practices for rice …
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Development of an object-oriented modeling environment for prototyping heterogeneous simulation models
… models. A Simulation Program Generator (SPG) for prototyping heterogeneuos simulation models is developed. Objects in the model represent elements within a flexible assembly system. These elements are the robot, the conveyor, the part, the schedule plan and the robot program. These …
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Lipids and fatty acid composition of early and term healthy placenta with a specific focus on foetal growth development
… markedly increased in CPG, EPG, IPG and serine (SPG) phosphoglycerides compared with early in gestation (8-14wk) placental membranes, (2) the GDM placenta had elevated AA and DHA in CPG and EPG while the preterm placenta had reduced DHA in CPG and SPG and AA in SPG, and (3) maternal diabetes …
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Multi-resolution modeling of a discrete stochastic process identifies causes of cancer
… Here, we present the split-Poisson-Gamma (SPG) distribution, an extension of the classical Poisson-Gamma formulation, to model a discrete stochastic process at multiple resolutions. We demonstrate that the probability model has a closed-form posterior, enabling efficient and accurate …
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Regulation of n-3 PUFA biosynthesis in proliferating and differentiated PC12 pheochromocytoma cells
… (EPG) and phosphatidylserine (SPG) glycerophospholipids (GPL) via the elongation/desaturation pathway following alpha-linolenic acid (ALA, 18:3n-3) supplements was observed.That was accompanied by a marked reduction of eicosatrienoic acid (Mead acid, 20:3n-9), an index of PUFA …
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A Solidarity (Food) Purchase Group in Cape Town
… more recent years, solidarity purchase groups (SPGs) have formed as a distinct type of AFN collaboration that facilitates higher levels of relationships of regard and reciprocity between consumers and producers. The literature of AFNs has largely focussed on AFNs in the global North. There has …
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Late glacial and Holocene marine geology, palaeoceanography and palaeoecology of the Northern Isles of Scotland
… from an eastward expansion of the subpolar gyre (SPG). Conversely, from 4.2 ka to the present, data suggest a westward contraction of the SPG. This record highlights the connection of the North Sea to the wider North Atlantic throughout the Holocene, which has consequence for future …
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Cell Topology Change by the Physical Engagement of Neighboring Cytoskeletal Networks
… furrowing, an actin cap, consisting of Sponge (Spg, a Rac GEF), SCAR/WAVE, and Arp2/3, forms on top of each nucleus. Each cap is encircled by actomyosin borders, enriched with Rho signaling effectors (Rok, myosin, Dia, anillin, and anillin-recruited septins). Each network has only been studied …
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Agroecologia e agência em territórios: o Polo Agroecológico e de Produção Orgânica da Zona da Mata Mineira
… (CTA-ZM), o Sistema Participativo de Garantia (SPG) Floriô, as feiras agroecológicas, dentre outros, são os que estão dando materialidade à política pública a partir da sua capacidade de agência em seus em seus respectivos territórios. Palavras-chave: agroecologia; agência; Zona da Mata mineira; …
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Chemical sensors based on swelling polymer microspheres and uncrosslinked fluorescently-labelled molecularly imprinted polymers
… polymerization using the Shirazu porous glass (SPG) method. The particles were lightly crosslinked with divinylbenzene followed by amination with NNN'-trimethylethylenediamine.</p><p>Poly (hydroxyethylmethacrylate)(polyHEMA) microspheres were prepared by dispersion polymerization and then …
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Identification and characterisation of novel zebrafish brain development mutants obtained by large-scale forward mutagenesis screening
… these mutants as being defective in the spg locus. The second screen produced 35 new mutants by screening morphologically and with antibodies against acetylated Tubulin, which marks all axonal scaffolds, and anti-Opsin, which is a marker for photoreceptors in the pineal gland. According …
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A critical realist investigation of collaborative research proposals in Information Systems: towards a guiding deliberation canvas
… and Gates During Scientific Collaboration model (SPG) which builds a more comprehensive process view of the research lifecycle. This model contributes to the existing body of knowledge by combining stage-gate concepts to match the rule driven environment in use by research offices in universities, …
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Factors Affecting the Structural Integrity of Wood-Based Composites: Elevated Temperature and Adhesive Bonding
… in the performance of the three adhesives. SPG (one species of the rotary-peeled veneers) demonstrates a rising R-curve behavior (an increase in the fracture toughness with crack length) when bonded on the loose side. This increase in fracture toughness is observed to be a result of …
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