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 239 for “"Cell Size"”.
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Cell Size Control in Fission Yeast
… organisms, there is almost much variety in cell size as there is for cell function and cell type. However, within each cell type, cells stay remarkably faithful to a defined size over generations. Many factors have been found to influence this ability to specify and maintain cell size, yet …
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Control of gene expression by cell size
… whole chromosome sets in the genome, is a common cellular state in evolution, development and disease. Polyploidy enlarges cell size and alters gene expression, producing novel phenotypes and functions. Although many polyploid cell types have been discovered, it is not clear how polyploidy changes …
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On connections between metazoan cellular metabolism and cell size
All animal cells maintain cell size homeostasis, where cell growth (increase in size) is balanced with proliferation (reduction in size via cell division). Yet, different cell types have different sizes and there are physiologically relevant situations where animal cells undergo major cell size …
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Minimum cell size for information capacity increase in cellular wireless network
In conventional cellular wireless communication system, interference modelling has focused on the six primary co-channel interfering cells (first tier co-channel cells). In the current accepted interference model, co-channel interfering cells beyond the first tier (subsequent tier co-channel cells) …
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The Effects of PTEN Deletion on Cell Size and Plasticity in the Hippocampus
… PI3K pathway modulates proliferation, migration, cellular size and synaptic transmission and plasticity. Neurologic abnormalities such as autism, seizures, and ataxia are associated with inherited PTEN mutations. Yet, how PTEN loss contributes to neurologic dysfunction remains unknown. PTEN loss …
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Evaluating the role of the fission yeast cyclin B Cdc13 in cell size homeostasis
Most cellular proteins retain a stable concentration as cells grow and divide, but there are exceptions. Some cell cycle regulators change in concentration with cell size. In fission yeast, Cdc13 (cyclin B), an important activator of the core cell cycle kinase Cdc2 (CDK1), increases in …
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Cell Size Control And Asymmetric Cell Fates In Start Of The Saccharomyces cerevisiae Cell Cycle
… mechanisms that couple the process of cell growth to cell division is one of the major challenges of modern cell biology. Saccharomyces cerevisiae (budding yeast) has been an important model organism to study the coupling between cell growth and cell division. The insights obtained from …
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Using cell size to represent phytoplankton diversity in studies of nitrogen dynamics in the southern Benguela
… sensing and modeling platforms. A single-value size proxy, effective diameter (Deff ), represents the mean volume to surface area ratio across the nano and micro plankton size fraction (2-200µm) in the southern Benguela, but has yet to be tested regarding its biogeochemical relevance. Cell size …
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Regulation of cell size and cell division in the filamentous cyanobacterium Anabaena: a paradigm of bacterial multicellularity
La forma y el tamaño celular son caracteres codificados en el genoma bacteriano y, por tanto, hereditarios. En cada especie bacteriana, estos rasgos son constantes, aunque pueden sufrir modificaciones a lo largo del ciclo celular o bajo ciertas condiciones ambientales. En bacterias, la forma …
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Bacteria Big and Small: Exploring the Gut Microbiota of Marine Herbivorous Fish and Student Learning About Cell Size
… array of bacteria of different shapes and sizes ranging from about 1 to 600 μm in length. These microbes perform important functions such as influencing the host circadian rhythm and breaking down dietary polysaccharides. The first chapter of this dissertation presents a review of what is …
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Cell Size Distribution in the MGN and Associated Auditory Temporal Processing Deficits in P1 and P7 HI Injured Rodents
… From this convergent research a magnocellular theory has been put forward suggesting that damage to large or “magno” cells of the medial geniculate nucleus (MGN; which are hypothesized to be responsible for encoding temporal aspects of acoustic information), may underlie or contribute …
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Solid-state Polymer Nanofoams
… which are expected to be the next generation cellular materials, have attracted much attention in the past decade. Nanoscale dimension of the bubbles could potentially render the nanofoams to have improved properties or some novel properties never observed before. There existed substantial …
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Flow Cytometric Analysis of Crayfish Hemocytes.
… There are 3 hemocyte populations: hyaline cells, granular cells, and semigranular cells. Hemocytes from laboratory housed, untreated crayfish (normal crayfish) have been quantified on the basis of cell type, cell size, and cell granularity using Flow Cytometry. These data present the first …
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Foam formation in a PMMA-methanol system
… in the generation of low density and low cell size polymeric foams. Specifically, this means to understand what parameters contribute to an increase in nucleation density and a decrease in cell size. Polymeric foams with low cell size and density serve a lot of different applications such …
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Hypolimnetic oxygen decline and the hypolimnetic bacterial community.
This study reports on bacterial cell size and abundance change during oxygen depletion of Belton and Stillhouse Hollow reservoir. Bacterial cell size and abundance are compared with amount of heterotrophic nanoflagellates, dissolved oxygen, temperature, and time. The Relative Areal Hypolimnetic …
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FLOW CYTOMETRIC INVESTIGATION OF THE SIZE SPECTRUM OF NORTH SEA PHYTOPLANKTON COMMUNITIES
… linked to phytoplankton community assemblages. Cell abundance and biomass are a measure of the successful conversion of inorganic to organic carbon. Carbon estimates are therefore often used to analyse metabolism and energy transfers within marine environments, and carbon is frequently the main …
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A Field Information System for Site-Specific Crop Management
… these were the benefits and costs analysis, cell size selection, and the blocking of spatial soil data.
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The regulation of protein synthesis in adult rat cardiomyocytes
… muscle, and the increase is due to enlarged cell size, not increased cell number. A pivotal element of cardiac hypertrophy is an elevation in the rates of protein synthesis, which drives the increase in cell size causing hypertrophy. Unfortunately, we currently lack the understanding of the …
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Phytoplankton community structure determined through remote sensing and in situ optical measurements
… Detection of species, functional types or size classes has been addressed through a spectrum of empirical to analytical approaches. A key step in developing these techniques is quantifying the sensitivity in reflectance, which can be attributed to phytoplankton characteristics (e.g cell …
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Effect of Spatial Scale on Hydrologic Modeling in a Headwater Catchment
… the same watershed using a series of different size grid cells. The first step in applying TOPMODEL to a watershed involves GIS analysis which results in a raster grid of elevations used for the calculation of the topographic index, ln(a/tan b). The hydrographs generated by TOPMODEL with each …
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