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 27 for “"Beaker"”.
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KAAY's Beaker Street 1966-1977: Late Nights Of Underground Radio Programming, From Little Rock To The Western Hemisphere, On The Airwaves Of The Nighttime Voice Of Arkansa
… The purpose of this study is to examine the Beaker Street program on Little Rock's KAAY AM-1090. This show presented non-mainstream programming. Disc jockeys supported alternative points of view, while playing underground music. The 50,000-watt directional AM radio signal at night aired KAAY …
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Bell Beakers and Their Context in Central Europe: A New Approach
… a brief history of previous research on the Bell Beaker cultures of Central Europe, it is argued that traditional explanations for the presence of Bell Beakers in this area, in terrns of the immigration of a ’Beaker people’, are unsatisfactory, and result at least in part from a lack of attention …
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Efficiency calibration of a gamma-ray detector for measuring environmental radiation
… carried out using two sample holders (Marinelli Beaker (1000 ml) and, a cylindrical pill bottle (100 ml)), and a point source. The IAEA reference materials (RGU-1, RGTh-1 ore and RGK-1) were prepared and used to fill the Marinelli beaker and pill bottles. Certified reference point sources (⁶⁰Co, …
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Benchtop testing of polyethylene passive sampling towards a quantitative analysis of volatile organic compounds (VOCs) in soil vapours
… of toluene as the compound of concern (COC). A beaker of water was placed in the physical model as a second form of measurement of toluene concentration in the air. The concentration of toluene in the air of the physical model was measured using the PE passive sampler and compared to results …
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The Bronze Age Funerary Cups of Northern England
… finds the tradition to be heavily influenced by Beaker culture practices resulting in the earliest cups emulating some attributes of Beaker ceramics. The Northern English Cup assemblage defies the current perception that all Cups are perforated as 63% are not; fabrics are found to be locally …
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Bioflocculation of Wastewater Treatment Pond Suspended Solids
… this thesis algae pond effluent was treated in a beaker testing apparatus (mixed and aerated) with various mixtures of activated sludge and primary effluent simulating differing activated sludge aeration basin compositions then was allowed to settle to assess settleability. Conventionally, …
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Separation of alkali metal cations and alkaline earth cations using ionizable crown ethers
… Cell A (U-Tube cell), Cell B (tube-witiiin-a-beaker type cell), and Cell C (beaker-within-a-beaker type cell). In order to probe the influence of structural variations upon membrane transport, experiments were conducted for five structural parameters: variation of the polyether cavity size, …
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Active neutralisation and amelioration of acid mine drainage with fly ash
… treatment by means of mixing fly ash with AMD in beakers and a large tank at pre-determined ratios have shown that fly ash is capable of neutralising AMD and increasing the pH beyond neutral values, which optimises the removal of heavy metals and ions. The trend was: the more fly ash added the …
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Electrowinning of cobalt at high cathodic current densities (400-1000 A M-2)
… solutiaiie. The cell used was a cylindrical beaker of 1000 ml capacity. Two lead anodes and one stainless steel cathode were used as - electrodes. The cathode was prepared electrolytically with a solution of orthophospheric acid, rinsed with distilled water and acetone, then dried in a …
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The Bronze Age funerary cups of southern England
… contexts of such vessels probably arose within Beaker ceramic and funerary traditions. Many have complex biographies, some being deposited ‘fresh’ whilst others are fragmented or otherwise damaged. Perforations, long seen as a key feature of the tradition, appear to be restricted to certain …
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Design of drug delivery strategies based on well-stirred experiments
… in the body, which is represented by a beaker with an inlet and an outlet stream. In a two- compartment model, drug is distributed between the central and peripheral vessels. Only bolus and constant-rate infusion are considered in this study. Mathematical models are used to estimate the …
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The analysis of funerary and ritual practices in Wales between 3600-1200 BC based on osteological and contextual data
… in the Chalcolithic (c. 2500-2200 BC) with Beaker burials. However, formal burials remained relatively rare until the Early Bronze Age (c. 2200-1700 BC) when burial mounds, which often contained multiple burials, became the dominant type of funerary monument. Burial rites for this period …
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Quantification of Ultrasound Contrast Agents Using High-Frequency Ultrasound
… and were performed in vitro, i.e., within a beaker or within a perfusion phantom, or in vivo, i.e., within the auricular artery of a rabbit. Estimates of the UCA concentration were obtained by comparing estimates of the backscattered power spectrum corresponding to the scattering from UCAs. A …
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A Computer Simulation of a Laboratory Coreflood , Using TRSl0-80 Surfactant in Berea
… from Looney's coreflood. The prediction of Beaker samples at 1.0 and 2.7 wt. % NACl was somewhat better. No experimental data was available to test the fit of high sodium concentrations (greater than 2.7 wt.%) or in the presence of calcium. It is recommended that additional experimental data …
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CFD-DEM modelling of liquid-solid-gas flow in rotary drums and an application in solar panel leaching
… its performance against conventional beaker leaching. The effects of the reactor scale and the configurations on Ag conversion during leaching are experimentally investigated by applying two scales’ leaching beaker systems (solid/liquid ratio of 2 g/0.04 L and 250 g/5 L) and the RPDLR …
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The Neolithic pottery of the Isle of Man and its relationship to that of the surrounding area
… and adopted instead the more widely accepted Beaker pottery style. Throughout this study the reasons behind these changing relationships were explored within a broader social context.
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Factors Influencing Venom Expenditure During Defensive Bites by Cottonmouths (AGKISTRODON PISCIVORUS) and Rattlesnakes (CROTALUS VIRIDIS, CROTALUS ATROX)
… venom extractions into a parafilmcovered beaker. Biting behavior of the snakes was analyzed via slow-motion videotape review. The mass of venom expended by snakes was measured by protein assay.</p> <p>The amount of venom expended during defensive bites was positively correlated with …
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Ferrofluid flow and torque measurements in rotating magnetic fields
… as a torque meter. The spindle is immersed in a beaker of ferrofluid centered inside a 2-pole or 4-pole motor stator winding, creating uniform or nonuniform rotating magnetic fields, respectively. The spindle rotates at a constant speed up to 100 rpm or is stationary in these measurements. …
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Fabrication of Novel In-Situ Remediation Tools for Unconventional Oil Contamination
… in 1.5 L of 4.6 mg/L was removed from the beaker side. In addition to the circulation of PAH degrading enzymes in hollow fiber lumens, aliphatic degrading enzymes confined in multilayer nanofibrous membrane systems play an important role in the removal of oily compounds. Based on our …
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Estimating the concentration of ultrasound contrast agents using ultrasonic backscatter in vitro
… bead microspheres in degassed water using a beaker setup and a flow system setup. Experimentally obtained estimates of the BSC were fit to ultrasound scattering models to extract concentration estimates of either the UCAs or the glass beads. The fitting was accomplished with a …
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