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Musikinstrumente --- Musikpädagogik --- Ästhetische Bildung und Erziehung --- ästhet. Erziehung u. automat. --- Automat. Musikinstrumente. --- Elektron. u.a. Musikautomaten.

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Coinage --- Coins, Greek --- Electrum --- History. --- Electrum. --- Coinage. --- Coins, Greek. --- Elektron (Legierung). --- Münze. --- Mynt. --- History --- Grekland. --- Turkiet. --- Lydien. --- Greece. --- Turkey. --- Coinage - Greece - History. --- Coins, Greek - Turkey - History.

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Scaffolds of poly-?-caprolacton (PCL) and polyethyleneoxide (PEO) are of big interest in tissue engineering. PEO has the property to enhance the hydrophilicity, by migrating to the surface, and the flexibility of the scaffolds. In this study, the scale-up of the blending process from lab scale to industrial scale, is investigated. In a first stage, blends of PCL and PEO are extruded with a twin screw extruder in the shape of a filament. Because the dimensions of the filament are not constant, no unambiguous conclusions about the properties of the blends can be made. Therefore scaffolds are manufactured with the blends by means of a BioScaffolder. SEM and indentation tests are applied to study respectively the surface and the flexibility of the scaffolds. The conclusion is that the mixing of PEO and PCL is not homogeneous. To enhance the homogenization of the blend, a new method in which the blends are extruded several times, is studied. SEM and SCA shows that the migration of PEO to the surface is not occuring, probably due to the large molecular weight of the used PEO. To know more about the blends, morphologic investigation is done. It is found that the surfaces which are poor in PEO decrease when the blend is extruded more than once. Also the crystals are smaller when the extrusion has been done two times. This means that extruding the blend twice, has a positive influence on the homogenization of the blend. Scaffolds van poly-?-caprolacton (PCL) en polyethyleenoxide (PEO) worden aangewend in tissue-engineering. PEO wordt toegevoegd om de scaffolds meer hydrofiel te maken en de flexibiliteit te verhogen. In dit werk wordt de opschaling van het blending proces van laboschaal naar industriële schaal onderzocht. In een eerste fase worden de blends in een draadvorm geëxtrudeerd met een dubbelschroefextruder. Doordat de afmetingen van de draden niet uniform zijn, kunnen hieruit geen eenduidige conclusies omtrent de eigenschappen van de blends worden getrokken. Daarom wordt overgegaan tot het produceren van scaffolds met behulp van een BioScaffolder. SEM en indrukproeven worden aangewend om respectievelijk het oppervlak en de flexibilteit van de scaffolds te onderzoeken. Hieruit blijkt dat de menging van PCL en PEO in eerste instantie niet homogeen gebeurt. Om de menging te verbeteren wordt vervolgens een nieuwe methode, waarbij de blends meerdere keren geëxtrudeerd worden, ontwikkeld. SEM en SCA tonen aan dat de migratie van PEO naar het oppervlak, wat nodig is om de hydrofiliteit te verhogen, niet gebeurt. De oorzaak hiervan is hoogstwaarschijnlijk het hoge moleculair gewicht van het gebruikte PEO. Morfologie-onderzoek van de blends leert ons dat de PEO-arme zones in de blends kleiner worden naarmate het aantal keren extruderen groter wordt. Tevens worden de kristallen kleiner als de blend twee keer geëxtrudeerd wordt. Dit betekent dat de verdeling van PEO en PCL beter wordt door de blend twee maal te extruderen.

BioScaffolder. --- Compounderen - compounding. --- Compounderen. --- Dubbelschroefextruder. --- Indruktest. --- Kunststoffen - plastics. --- Kunststofverwerking - plastics processing. --- Morfologie. --- Poly-caprolacton. --- Polyethyleenoxide. --- Scanning Elektron Microscopy. --- Tissue engineering. --- Verwerking.

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"This book comprehensively presents the concepts of neutron physics and imaging including neutron properties, neutron matter interaction, neutron imaging, comparison with X-ray and physics and design of neutron sources. It discusses how neutron imaging has gained importance as a powerful non-destructive technique to understand the internal structures of materials/engineered components in wide range of industries by increasing their applicability and efficiency. The book also covers the topics of neutron optics and detectors, basic principles of neutron radiography and tomography, related standards, safety, metrology and regulations in neutron imaging. The book presents applications of neutron imaging in the areas of aerospace industry, nuclear power and manufacturing industry, materials science and engineering, geomechanics, national security, biological, and medical domain. Given its scope, the book will be highly beneficial for postgraduate students, researchers and industry professionals working in the area of engineering and physics, especially non-destructive testing and non-destructive evaluation through neutron imaging."--Publisher.

Neutron radiography. --- Neutrons. --- fundamental particle. --- optics. --- physical sciences. --- technology. --- particule élémentaire --- елементарна честичка --- elementarioji dalelė --- elemi részecske --- particella elementare --- elementarpartikler --- particulă elementară --- фундаментална частица --- Elementarteilchen --- cáithnín bunúsach --- temeljna čestica --- elementair deeltje --- elementārdaļiņa --- cząstka elementarna --- elementární částice --- alkeishiukkanen --- partikola fundamentali --- osnovni delec --- algosake --- základná častica --- основна честица --- partícula elementar --- στοιχειώδη σωματίδια --- partícula elemental --- elementarpartikel --- grimcë elementare --- proton --- fotão --- νετρόνιο --- elementariųjų dalelių fizika --- eletrão --- partiċella fundamentali --- fotoni --- électron --- footon --- neutronas --- electron --- неутрон --- elettrone --- perushiukkanen --- fotone --- neitrons --- fotonas --- Elektron --- ηλεκτρόνιο --- elektronas --- πρωτόνιο --- φωτόνιο --- elementary particle --- prooton --- фотон --- photon --- Neutron --- protonas --- nukleární částice --- elementárna častica --- protone --- електрон --- elektrons --- neutrón --- Proton --- electrón --- elementarna čestica --- elektron --- positron --- протон --- elektroni --- protoni --- protón --- Foton --- foton --- neutrão --- protons --- fotón --- neutrone --- neutron --- elementaarosake --- fotons --- neutroni --- elektrón --- protão --- основна честичка --- технология --- technológia --- teknik --- tecnologia --- technologija --- tehnoloogia --- tehnoloģija --- teknologi --- tehnologie --- tehnologija --- teknologia --- technologia --- teknoloġija --- τεχνολογία --- tecnología --- Technologie --- technologie --- teicneolaíocht --- teknologji --- технологија --- technický postup --- ingeniería --- inžinierstvo --- settore tecnologico --- technika --- egnet teknologi --- ingenjörsvetenskap --- ingénierie --- μηχανολογία --- engenharia --- инженерство --- inženýrství --- inžinerija --- engineering --- inženjering --- tehnika --- inženierpakalpojumi --- inginerie --- ingegneria dei sistemi --- inženierzinība --- inxhinieri --- fyzikálne vedy --- физичке науке --- φυσικές επιστήμες --- xjenzi fiżiċi --- физически науки --- fizikalne vede --- füüsikateadused --- sciences physiques --- fyzikální vědy --- fysikaaliset tieteet --- физички науки --- nauki fizyczne --- naturvetenskap --- fiziniai mokslai --- shkenca fizike --- fysiske videnskaber --- eksaktās dabaszinātnes --- ciências físicas --- Physik --- natuurwetenschap --- fizică --- fizikai tudományok --- eolaíochtaí fisiceacha --- fizika i srodne znanosti --- ciencias físicas --- scienze fisiche --- fysik --- fyzika --- fizika --- физика --- natuurkunde --- física --- füüsika --- physics --- fysica --- fizikë --- fysiikka --- φυσική --- physique --- fisica --- физика и сродни науки --- exakte Naturwissenschaften --- оптика --- ottica --- οπτική --- ótica --- optiikka --- optică --- ottika --- optaic --- optica --- optik --- Optik --- optikë --- optique --- optika --- optyka --- óptica --- fototecnica --- catadiottrica --- diottrica --- fénytan --- диоптрија --- Radiography, Industrial --- Thermal neutrons --- Atoms --- Baryons --- Matter --- Particles (Nuclear physics) --- Constitution