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 185 for “"GPC"”.
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Characterization of cellulose esters via GPC/FT-IR
… for quantitative gel permeation chromatography (GPC). GPC/FT-IR has been used in the analysis of polymeric materials in the past, but not for quantifying the substituent content of cellulosics. This work has identified the infrared asymmetric nitrate absorptions of cellulose nitrates observed in …
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The Acute Effects Of Alpha-Gpc On Hand Grip Strength, Jump Height, Power Output, Mood, And Reaction-Time In Recreationally Trained, College-Aged Individuals
<p>Introduction: While alpha-GPC has received recent praise as a mental and physical performance enhancement supplement, very limited research on this topic exist, and no current studies examine alpha-GPC in collegiate-aged trained individuals. This study hopes to bridge the gap in the current …
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Effects Of Alpha-GPC and Huperzine-A On Short Term Memory, Anaerobic Power Output, Post Exhaustion Compared To Caffeine And Placebo In Healthy College Age Students
… To examine the effects of Huperzine-A and Alpha-GPC on short term memory and anaerobic power output, post exhaustion compared to caffeine and placebo in healthy college age students. Methods: The study was conducted as a double blind, placebo controlled, randomized design on 62 healthy adults …
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Generalised predictive control : a study and application
… investigates the Generalised Predictive Control (GPC) method derived by Clarke, Mohtadi and Tuffs in the mid eighties. GPC is an adaptive predictive control algorithm, of which there are number, and has proven to be one of the more popular variants having been applied to various control …
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Experiment Study of Non-Equilibrium Phase Behavior and Effect of External Vibration on Heavy Oil Production
… Vibration-Stimulated Gas Pressure Cycling (VS-GPC) processes with different vibration durations and frequencies were performed. The enhanced heavy oil recovery processes were compared in terms of the heavy oil recovery factor (RF), instantaneous gas production (iGP), production pressure (Pprod) …
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Indicadores de adherencia de las Guías de Práctica Clínica en Colombia : 2016
Las Guías de Práctica Clínica (GPC) son un insumo fundamental dentro del Sistema de Salud para la prestación de los servicios las cuales impactan su calidad y financiación, tras cinco años de la publicación de las primera GPC en Colombia, realizadas con una metodología vigente y reconocida, es …
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Predictive control algorithms with guaranteed stability and asymptotic tracking
… to enhance accuracy of the estimated model. The GPC (generalized predictive control) algorithm is then implemented for mold level regulation of the casting process. Compensation of measurement noise by the standard GPC algorithm results in excessive controller activity. A modification to the GPC …
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Robust self-tuning predictive control for industrial applications
… self-tuning Generalized Predictive Control (GPC) algorithm based on long range prediction, has been successfully tested in a wide range of industrial control applications. The complicated nature of the GPC algorithm, however, makes it very difficult to apply to it the standard analytical …
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Arachidonate oxidation metabolite profiles for myoglobin and a structurally altered form of myoglobin produced in muscle disease or trauma
… (Mb-H) react with glycerophosphocholine (GPC) lipid in the presence of oxygen. This reaction allows the heme group in the protein the chance to induce peroxidation reactions with the lipid. Several aldehyde products of this type of reaction with arachadonic acid have previously been …
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Flight characteristics of pen-reared and wild prairie-chickens and an evaluation of a greenhouse to rear prairie-chickens
… was compared to wild greater prairie-chickens (GPC, T. c. pinnatus) in Minnesota and Kansas using a radar gun and a trained dog. There was no difference (P = 0.134) in flight speed for pen-reared APC and wild GPC. However, wild GPC had greater (P < 0.001) flight distances than did pen-reared …
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Dextran Polymer Fractionation by Production Scale Chromatography and Ultrafiltration
Reviews of gel permeation chromatography (GPC) and of ultrafiltration (UF) theory have been made. The aims of the project were to fractionate dextran, a polyglucose, on an existing chromatograph to achieve more optimum conditions of operation and to eliminate the silica dissolved from the …
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Dilute solution studies of molecular weight distributions of nitrocellulose, modified lignins and PMMA graft polymers
… with a differential viscosity detector (GPC/DV) was employed to study the dilute solution properties of various polymers, specifically their absolute molecular weight distributions and hydrodynamic behavior. The study was divided into three parts. The first part focused on the time …
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The fractionation of dextran polymer by ultrafiltration to yield clinical products
… of dextran using gel permeation chromatography (GPC) and hollow fibre UF membranes supplied by Amicon Ltd. Initial laboratory work centred on determining the most efficient make and configuration of membrane. UF membranes of the Millipore cassette configuration, and the DDS flat-sheet …
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POLYCYCLIC POLYAMINES: SYNTHESIS AND CONFORMATIONAL ANALYSIS
… by preparative gel permeation chromatography (GPC). The modification of a Waters 200 analytical GPC unit are described as are the column packing procedures for preparative GPC columns.</p>
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The Effect of Split Nitrogen Fertilization on Yield, Quality, and Nitrogen Use Efficiency of Spring Barley Grown on Two Different Soil Types in Iceland
… on growth, grain yield, grain protein content (GPC), and NUE. Treatments included single fertilization at sowing, early booting, and/or late anthesis with different N rates for each application. Splitting N did not increase grain yield compared to a single application at sowing, but high N doses …
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Thermal characterisation of XB2-CA4 : cyclic poly(butylene terephthalate) with stannoxane catalyst
… of linear polymer[1]. However, FTIR and GPC experiments on samples heated to 230°C and 250°C, do not show production of linear polymer, but rather an increased production of cylcic polymer, but of a slightly lower molecular weight than that produced at 170°C and 190°C. It was initially …
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Robust State Estimation, Uncertainty Quantification, and Uncertainty Reduction with Applications to Wind Estimation
… process for using generalized polynomial chaos (gPC) to re-cast the dynamics of a system with non-deterministic parameters as a deterministic system. The concepts are applied to the problem of wind estimation and characterizing the precision of wind estimates over time due to known parametric …
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Molecular characterisation and functional properties of gum arabic
Semi-PreParative gel permeation chromatography (gpc) was used to isolate several molecular mass components of gum arabic. The u. v. (218 nm) gpc elution profile showed the presence of several prominent peaks; however, only one major peak (FAw 3.8 x 10-9 g moll) and a minor peak (FAw 1.45 x 106 g …
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Mononuclear and Dinuclear Complexes of Allylated alpha-Diimines as Catalysts for the Polymerization of Ethylene
… were analyzed via gel permeation chromatography (GPC). The GPC results showed broad molecular weight distributions due to the dual sites of these catalysts. The GPC spectrum of polyethylene produced with the dinuclear catalyst 13 was discussed as an example and compared with the GPC spectrum of …
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Molecular characterization and promoter analysis of the maize cytosolic glyceraldehyde 3-phosphate dehydrogenase gene family
… and mRNAs corresponding to a member of the gpc multi-gene family, gpc3, increase under anaerobiosis. This study extends further analysis of the gpc gene family, with specific emphasis on gpc4. Analysis of full length cDNA clones for GAPC2, GAPC3 and GAPC4 revealed that the deduced amino acid …
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