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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 97 for “"Amalgam"”.
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Architectural Amalgam
… more clear. This thesis uses the notion of amalgam as an example, where new material, natural light, and special spaces form a contrast, to evoke our memories.
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Mercury Amalgam Electrodeposition on Metal Microelectrodes
Mercury amalgam microelectrodes, typically fabricated by electrodeposition of mercury onto metal (platinum, gold, silver) inlaid disks, possess certain advantageous properties for scanning electrochemical microscopy (SECM) and electroanalysis. But as applications require more and more precision, …
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Nucleation kinetics in alkali amalgam vapors.
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 1973
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Composite versus amalgam: A three-year clinical study in posterior primary teeth
… teeth. The purpose of this study was to compare amalgam to composite resins in such restorations. Two composite resins (Adaptic and Radio-opaque Adaptic) served as the Experiemental material and amalgam, (Dispersalloy) was the control . One operator placed 57 sets, one restoration of each of the …
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ΣΥΓΚΡΙΤΙΚΗ ΜΕΛΕΤΗ ΤΗΣ ΣΥΓΚΡΑΤΗΤΙΚΗΣ ΙΚΑΝΟΤΗΤΑΣ ΤΟΥ ΑΜΑΛΓΑΜΑΤΟΣ ΑΠΟ ΤΙΣ ΚΑΡΦΙΔΕΣ (T.M.S.)
… STUDY WAS TO MEASURE THE RETENTION BETWEEN AMALGAM AND SELF-THREADING PINS T.M.S. (REGULAR-MINIM). THE EFFECTS OF PIN DIAMETER, THETYPE OF AMALGAM AND THE METHOD OF CONDENSATION WERE EXAMINED. THE LENGTH OF THE PIN EMBEDED INTO THE AMALGAM AND THE FORCE EXERTED FOR IT'S CONDENSATION …
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Assessment of the potential environmental impacts arising from mercury-free dental restorative materials
… use that contain Hg (mercury), including dental amalgam, through the Minamata Convention of 2013, which has in turn caused a rise in Hg-free dental filling materials that are now becoming increasingly nano-filled. The focus of this study is on the particles released from Hg-free dental fillings. …
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Marginale Adaptation von stopfbaren Kompositen und Ormoceren in Klasse-II-Kavitäten
… aesthetic demands and the discussion about amalgam, composites are used more and more to restore posterior teeth. Packable composites and ormocers are discussed as better alternatives for amalgam as stress-bearing posterior restorations when compared to traditional hybrid composites. Aim of …
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Mercury emissions from crematoria
… the contamination has been assumed to be dental amalgam from cremated cadavers. Amalgam fillings contain 50% mercury, which under cremation conditions is totally vaporised and emitted from the stack either as the metallic vapour or in the oxidised form. Mercury is a cumulative poison with varying …
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Reducing Dental Mercury Discharge in Missoula, Montana: Collaborative Opportunities
… program to control the release of dental mercury amalgam in Missoula, Montana. To do this, three research components were carried out. The first consisted of a survey to determine whether Missoula dentists are following the American Dental Association’s (ADA) recommended Best Management Practices …
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Reducing Dental Mercury Discharge in Missoula, Montana: Collaborative Opportunities
… program to control the release of dental mercury amalgam in Missoula, Montana. To do this, three research components were carried out. The first consisted of a survey to determine whether Missoula dentists are following the American Dental Association’s (ADA) recommended Best Management Practices …
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Changes of the Marginal Periodontium as a Result of Labial Tooth Movement in Monkeys
… and marginal bone was found when compared to an amalgam marker located on the facial surface of the displaced central incisors. The distance from the amalgam marker to the mucogingival junction increased enough to compensate for the decreasing effect of the recession on the width of the …
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Comparison of an Advanced Mercury Analyzer with the Cold Vapor Atomic Absorption Technique for the Determination of Mercury in Coal
… release mercury, which is concentrated in a gold amalgam. Thermal desorption of the mercury from the amalgam is detected by atomic absorption spectroscopy. A comparison of the performance of the AMA-254 with CVAAS techniques was made using standard reference materials. The CVAAS method follows the …
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Oberflächeneigenschaften von Zahnrestaurationsmaterialien
… describes 18 different restorative materials (amalgam, gold, composite, glass ionomer cement, ormocer and compomer). The influence increasing roughness on the surface free energy and the distribution into dispers and polar portions was determined. Metals exhibited lowest values (gold alloy and …
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Model studies of metal-slag reactions in reaction generated foams.
… molten iron was represented by a pool of sodium amalgam, the slag by a mixture of water and glycerol and the oxygen by a hydrogen chloride-nitrogen jet. Droplets of amalgam ejected from the bath by the impinging gas jet, reacted with the hydrogen chloride dissolved in the model slag to produce …
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A biophysical analysis of the occlusal wear of dental materials
… dental materials evaluted for wear included amalgam, porcelain, and composite opposed by a natural third molar palatal cusp. The wear of amalgam was slight (volume loss 0.0307 .0036 mm^3 and depth .072 .0017 mm at 300K masticatory cycles) and wear of the opposing enamel was not measurable. …
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The manufacturing and plating technology used in the production of mid-3rd/ 4th century AD Roman coins - An Analytical Study
… been used for the production of the plating was amalgam silvering. Combined application of LA-ICP-MS and EPMA analyses of the coins proved for the first time, that mercury was correlated with silver in the plating area. Much higher concentrations of mercury occurred on the surface than in the …
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Universal completions of the cyclic amalgams of the same type
… Lemma on the number of isomorphism classes of amalgams having fixed type, verify that there is one isomorphism class of amalgam of type A=(S\(_n\)S\(_n\)S_(n-1), \(\phi\)\(_1\), \(\phi\)\(_2\)) where \(\phi\) is an identity map from S_(n-1) to (S\(_n\)for i=1, 2 and n\(\not\) 2,3,6,7. When …
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Architectural techniques to unlock ordered and nested speculative parallelism
… compose parallel speculative algorithms. Third, Amalgam makes more efficient use of speculation resources by splitting and merging address set signatures to create fixed-size units of speculative work. Amalgam can improve performance and reduce implementation costs. Together, these techniques …
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The ethics of care or the ethics of justice? : a middle way
… justice, offer critical analysis and develop an amalgam of key elements from both. A more sufficient framework for moral decision-making will be proposed and its validity assessed. Part One investigates the ethics of care, beginning with a critical analysis of Carol Gilligan's approach to the …
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