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 126 for “"OPC"”.
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Ion diffusion from Sellafield OPC paste formulations
… can be achieved using ordinary Portland cement (OPC) and various additives such as blast furnace slag (BFS) or pulverised fly ash (PFA). Treated radioactive wastes in this manner are characterised by good thermal, chemical, physical stability and compressive strength. In addition the alkaline …
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Towards a more efficacious treatment for Oropharyngeal Candidiasis (OPC): Hydrogel-forming tablets for the controlled release delivery of Chlorhexidine diacetate
Oropharyngeal candidiasis is a localised infection in the oropharynx region caused by Candida species, predominately C. albicans. It is commonly spread among immunocompromised patients and aggravated by hyposalivation or xerostomia. Current treatment is by systemic antifungals, which might be …
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Aggressive water attack on carbonated cement materials
… and white water: (i) Generally uncarbonated OPC experiences significantly higher calcium mineral dissolution rates than both carbonated OPC and 30% fly ash OPC cement concretes. (ii) Once steady dissolution rates were attained, measurements indicated that 30% fly ash OPC and carbonated OPC …
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An investigation of organizational-professional conflict in management accounting
… Known as organizational-professional conflict (OPC), this conflict has been associated with dysfunctional organizational outcomes, including increased turnover and decreased job satisfaction among professional employees. Previous studies of this phenomenon have been performed with respect to …
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Influence of curing on the properties of concretes and mortars in hot climates
… had some significant effect on the strength of OPC/ggbs samples, the effects on OPC and OPC/pfa were in general only minimal. Furthermore, as to the effects on the pore size distribution and permeability, a critical curing duration (beyond which no further significant changes in these properties …
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Stereological Analysis of Oligodendrocyte Progenitor Cells In the Adult Mouse Brain
… and neurotransmission can modulate adult OPC proliferation and differentiation. More specifically, we used stereology to establish whether extensive reference memory training and system-wide administration of GABAergic agonists and antagonists could influence the proliferation and …
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Investigating mechanical properties of ordinary portland cement. Investigating improvements to the mechanical properties of Ordinary Portland Cement (OPC) bodies by utilizing the phase transformation properties of a ceramic (Zirconia).
… of Ordinary Portland Cement discs. The ZrO2-OPC discs were prepared by powder mixing, water hydration and uniaxial pressing. Vicat needle tests showed that tetragonal-ZrO2 increases the initial setting rate. Microscopy indicated that porosity distribution changes near to ZrO2 particles. …
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Multiparametric Magnetic Resonance Imaging Artificial Intelligence Pipeline For Oropharyngeal Cancer Radiotherapy Treatment Guidance
<p>Oropharyngeal cancer (OPC) is a widespread disease and one of the few domestic cancers that is rising in incidence. Radiographic images are crucial for assessment of OPC and aid in radiotherapy (RT) treatment. However, RT planning with conventional imaging approaches requires operator-dependent …
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Evaluation and Calibration of Coupled Low-Cost Particulate Matter Sensors
… sensors–the Plantower PMS5003 and the Alphasense OPC-N3–to measure both PM2.5 and PMCoarse. QuantAQ purportedly uses the PMS5003 to estimate the mass concentration of particles below the detection limit of the OPC-N3; in this case, the MOD-PM uses both the PMS5003 and OPC-N3 to calculate PM2.5 …
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Le operazioni con parti correlate
… TUF, ivi inclusa l’analisi del fenomeno delle OPC infragruppo, viene approfondito il tema relativo al ruolo degli amministratori (esecutivi, non esecutivi e indipendenti) nel contesto di una OPC nonché quello delle OPC di competenza assembleare (c.d. whitewash). Il lavoro si conclude con una …
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The impact of the Human papillomavirus type 16 on non-coding RNAs in Head and Neck cancer
… association with the Oropharyngeal cancer (OPC) subtype. The high-risk variant, HPV type 16 (HPV16), is the cause for 90% of all HPV related OPCs. Non-coding RNAs (ncRNAs), such as microRNAs (miRNAs) and long non-coding RNAs (lncRNAs), have been shown to have dysregulated expression in OPC. …
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Investigating interplay between human regulatory T cells and oligodendrocyte lineage cells
… restored by oligodendrocyte progenitor cells (OPCs) that migrate to, and proliferate in the site of injury, differentiate into mature oligodendrocytes (OLs) and generate new myelin sheaths, a process termed remyelination. The signals that influence this process in the central nervous system …
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Oligodendrocyte precursor cell states and their regulation
Oligodendrocyte precursor cells (OPCs) differentiate into myelinating oligodendrocytes throughout life, allowing the formation of myelin during early development, but also following learning or demyelinating injuries. A number of factors are thought to regulate OPC proliferation and …
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Acute Pain Prediction in Oral Cavity and Oropharyngeal Cancer Patients Receiving Radiation Therapy
<p>Oral-Cavity and oropharyngeal cancers (OC/OPC) are types of head and neck cancers that are increasing in incidence domestically. Radiation therapy (RT) is crucial in OC/OPC management. Pain is a common and challenging symptom for most patients during therapy, as nearly all patients undergoing …
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Textile fine grined mortar containing palm oil fuel ash as a partial cement replacement for flexural strengthening on reinforced concrete beams
… sand less than 1 mm, ordinary Portland cement (OPC) and POFA as a partial OPC replacement. Flexural and compressive test was conducted to identify the optimum FGM-POFA. After that, the strengthening on concrete prisms derived from combination of optimum FGM-POFA and alkali resistant glass (ARG) …
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Investigating neuroectodermal transdifferentiation: How do CNS progenitors form Schwann cells?
… progenitors, oligodendrocyte progenitor cells (OPCs), can produce SCs in vivo. The mechanisms underlying this damage-induced plasticity of OPC fate choice remain incompletely understood. Therefore, in this thesis I sought to understand how changes in the lesion environment alter the …
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Accompagnement ergothérapique de parents et d’éducatrices pour améliorer la participation d’enfants d’âge préscolaire ayant des difficultés fonctionnelles
… transition. Occupational Performance Coaching (OPC) is a type of coaching which shows promising results for school age children with a variety of difficulties. However, OPC has not yet been studied with preschool age children. This study aims to 1) document the characteristics of preschool …
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The brain microenvironment and its role in oligodendrocyte progenitor cell ageing
… matrix (ECM), oligodendrocyte progenitor cells (OPCs) and astrocytes. During ageing the resident brain progenitors undergo cellular arrest causing a diminished regenerative response. Increasing research evidence supports the notion that the ageing brain ECM not only provides structural support, …
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Relationship between decomposition level and induced solidification of peat based on laboratory investigation
… filled and bound using ordinary portland cement (OPC) and coal ash (fly ash, FA and bottom ash, BA). Different decomposition levels of peat require different amounts of filler and binder to achieve the optimum strength. The peats are categorized as fabric for the less decomposed peat, hemic for …
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Changes in the Oligodendrocyte Progenitor Cell Nuclear Lamina During Ageing
… from the oligodendrocyte progenitor cell (OPC), a multipotent progenitor cell of the central nervous system. However, the efficiency of this regenerative process declines with ageing, leading to neurodegeneration and progressive neurological dysfunction in older individuals with MS. …
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