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Showing 1 to 20 of 25 for “"pressure cell"”.
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Evolução de células de pressão total e experiência da COPPE
… study of design and performance of earth pressure cells as used in soils and rigid boundaries (diaphragm walls, sheet piling etc) was firstly done, and a general classification of these instruments was presented. It was sought to estabilish limiting values for the differents factors that …
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Ladungs- und Orbitalordnungsphänomene in Übergangsmetalloxidverbindungen unter hydrostatischem Druck
… orbital order and their behaviour under external pressure. Therefore, a new pressure cell has been developed which allows the observation of superlattice reflections corresponding to the order phenomena under pressure using scattering of high-energy synchrotron radiation. The maximum pressure that …
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Determination Of Optimum Polymer Dose For Grand Forks Wastewater Treatment Plant Lagoon Sludge Dewatering
… bench top tests- Time to filter (TTF) and Air Pressure Cell Test were performed for determining the best usable polymer and optimum polymer dose. Polymers of four cationic concentrations(C 6210, C 6237, C 6257 and C 6285) were used as polymer samples. Sludge samples were collected from the …
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An experimental and analytic study of earth loads on rigid retaining walls
… made using a compaction- induced lateral earth pressure theory and a vertical shear force theory. The compaction-induced lateral earth pressure theory was revised from a previous theory. The revisions improved the accuracy with which the theory models the hysteretic stress behavior of the …
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The amino acid and monosaccharide content of the cell walls of Thiobacillus thiooxidans
… large quantities of Thiobacillus thiooxidans cells, (b) to find an acceptable method of rupturing the cells, (c) to find an acceptable method of isolating the cell walls, and (d) to analyze the cell wall components, especially the amino acid and sugar components. The strain of T. thiooxidans …
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A system for predicting burning weather in the south-western Cape mountain catchment areas
… associated with weak anticyclonic air flow. The pressure configuration which gives rise to the required anticyclonic flow consists of a high pressure cell over the eastern part of the subcontinent, a trough of low pressure along the north-western interior and the location of the climatological …
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A system for predicting burning weather in the south-western Cape mountain catchment areas
… associated with weak anticyclonic air flow. The pressure configuration which gives rise to the required anticyclonic flow consists of a high pressure cell over the eastern part of the subcontinent, a trough of low pressure along the north-western interior and the location of the climatological …
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The Effect of Pressure on Ion Track Formation in Minerals
… heavy ions in a solid, being exposed to extreme pressure, can induce specific phase transitions. This work describes the first experiments on ion track formation under high pressures up to 140 kbar which were performed at GSI by injecting relativistic heavy ions, accelerated with the …
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Characteristics of the Recovery of the Coenzyme A-Synthesizing Protein Complex from Saccharomyces Cerevisiae
… shown to be insoluble in the crude Bakers' yeast cell lysate formed by exposing the yeast cell to ether and dry ice. Only after solubilization has this multienzyme complex been shown to catalyze the formation of bound dephospho-CoA utilizing the substrates adenosine triphosphate, D-pantothenic …
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Vertex-based discretisation methods for thermo-fluid flow in a finite volume-unstructured mesh context
… framework PHYSICA. Currently PHYSICA employs a cell-centred discretisation technique for fluid mechanics problems and a vertex-based discretisation technique for solid mechanics problems. The vertex-based discretisation approach is validated for a variety of heat transfer problems and …
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Rainfall variability over southern Africa
… variability is the Botswana high, a high pressure cell which exists at the 500hPa level and is centred over central Namibia and western Botswana during austral summer. 20th Century reanalysis data is used to further investigate this feature and analysis reveals an association between the …
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Entrainment in Saldanha Bay
… of an interplay between the South Atlantic High Pressure Cell, a thermal low that forms over southern Africa in summer, coastal lows, and eastward moving extra tropical cyclones (Shannon 1985). In summer, the band of extra tropical cyclones associated with the jetstream moves to the south of its …
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High-Pressure Studies of Some Heavy Fermion Materials
… on three heavy fermion materials under pressure: CeSb2, YbPtBi and CeAgSb2. In Chapter 1, I give an introduction to the key concepts involved in this work, such as unconventional superconductivity, quantum critical points and quantum oscillations, and I explain why heavy fermion …
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Performance Analysis and Modeling of Pavements with a Cold Central Plant Recycled Base under Accelerated Loading Testing
… section was instrumented with strain gauges, pressure cells, and thermocouples. A heavy vehicle simulator (HVS) was used to load three replicate test sections in each lane, with the temperature controlled at 39°C at a depth of 1.5 inches. Results from the instrument verification analysis …
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Quantitative measurements of temperature using laser-induced thermal grating spectroscopy in reacting and non-reacting flows
… systematic measurements of temperature in high pressure flames using OH and NO as target absorbing species in the burned gas. The signal obtained in LITGS measurements appears in the form of a time-based signal with a characteristic frequency proportional to the value or the sound speed of the …
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Pressure tuning spectroscopy of binuclear metal cluster compounds
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-02T15:43:50Z No. of bitstreams: 1 1987_Carroll.pdf: 1436938 bytes, checksum: 4ec3d27fdffa96f30d6b8f2ce6e519f3 (MD5)
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Self-sealing of thermal fatigue and mechanical damage in fiber-reinforced composite materials
… load. Healing was assessed through the use of a pressure cell apparatus to detect nitrogen flow through the thickness direction of the damaged composite. Successful healing resulted in a perfect seal, with no measurable gas flow. The effect of DCPD microcapsule size (51 um and 18 um) and …
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Emergent Critical Phases in Strongly Correlated Low-Dimensional Magnetic Systems
… tuned with a clean and controllable parameter, pressure. At ambient pressure, they are two-dimensional van-der-Waals antiferromagnets with strongly correlated physics. Recent experimental findings have unveiled pressure induced dimensionality crossover, crystalline structure change, …
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Cell cycle control of aspartate transcarbamylase levels in Chlorella sorokiniana
… or multiple passages through a French pressure cell. The loss of sensitivity to inhibition may be due to breakdown of the enzyme into subunits or breakdown of a multienzyme complex of pyrimidine enzymes. An assay for activity of carbamyl-P synthetase (E. C. 2.7.2.5), a suspected …
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A study of superconducting lead-indium alloys subjected to hydrostatic pressure using the electron tunneling technique
<p>This dissertation deals with the pressure induced changes in the vibrational spectrum of the lattice and the electron-phonon interaction of a metal in both the normal and superconducting states. Specifically, the effects of pressure induced changes on the phonon spectrum F(ω) weighted by the …
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