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Chapter and Conference Paper
Electron microscopic investigations of the polymer/mineral composite material nacre
Nacre of the mollusc Haliotis laevigata was investigated using transmission electron microscopy (TEM). Nacre, the inner iridescent layer of mollusc shells, is a typical example for a material which is formed by b...
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Chapter and Conference Paper
Interaction of Stacking Faults in Wurtzite a-Plane GaN on r-Plane Sapphire
The defect structure in a-plane GaN films grown on r-plane sapphire distinguishes itself significantly from the one found in c-plane GaN. Transmission electron microscopy studies on a-plane GaN films grown by hyd...
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Chapter and Conference Paper
Concentration Evaluation in Nanometre-Sized In x Ga1-x N Islands Using Transmission Electron Microscopy
In this work the indium concentration of uncapped InGaN samples is measured by three different transmission electron microscopy approaches which are based on measurement of local lattice plane distances. In th...
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Chapter and Conference Paper
Characterization and structuring of nitride-based heterostructures for vertical-cavity surface-emitting lasers
A new approach for nitride-based distributed Bragg reflectors as mirrors for vertical-cavity surface-emitting lasers was investigated by means of transmission electron microscopy. These layers consisted of mul...
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Chapter and Conference Paper
Investigation of InxGa1−x N islands with electron microscopy
InxGa1−x N islands grown by molecular beam epitaxy are analysed by transmission electron microscopy. Samples are compared which were of different nominal In concentrations and with or without GaN ...
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Chapter and Conference Paper
Ein generisches System für das Beobachten und Bedienen von SPS-Anwendungen auf der Basis von Web-Technologie
Der Beitrag stellt ein Web-basierten Systemansatz zum Bedienen und Beobachten von SPS-Anwendungen vor, der in einer Zusammenarbeit zwischen der Moeller GmbH und der Fachhochschule Wiesbaden entwickelt wurde. O...
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Chapter and Conference Paper
Laborautomation durch µController-basierte Geräte mit CORBA-Schnittstellen
Ein typisches, chemisches Analyselabor ist derzeit durch eine Vielzahl von Geräten zahlreicher Hersteller gekennzeichnet. Außer Modulen zur Probenvorbereitung (z.B. Schüttler, Zentrifugen, Ultraschallbad, Dosi...
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Chapter
Objektorientierte Programmierung verteilter Echtzeitanwendungen
Distributed system structures for automation and control systems have become popular during the last years. Such architectures can be built cost-effectively based on powerful microcontrollers and field busses....
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Chapter
Theoretical Considerations on the Steady Rod Climbing at Vanishing Influence of Gravity
Delgado [4] and Delgado & Rath [5] have shown that the surface elevation connected with the rotating rod climbing (Weissenberg effect) conducts to a steady ellipsoid-like body of revolution when the gravity ef...
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Chapter and Conference Paper
Implementierung eines RPC-Protokolls für eine objektorientierte Umgebung
In diesem Beitrag wird ein RPC-Protokoll beschrieben, das im Zusammenhang mit dem Projekt PROFEMO entworfen und implementiert wurde. Das Protokoll berücksichtigt die besonderen Bedürfnisse einer objektorientie...
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Chapter and Conference Paper
Mutabor — An Intelligent Memory Management Unit for an Object Oriented Architecture supporting Error Recovery
In the project PROFEMO (project for the design and implementation of a fault-tolerant multiprocessor system) objects are primarily regarded as an appropriate means to increase system reliability. Their contributi...
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Chapter and Conference Paper
Error Recovery in einer verteilten Systemarchitektur
Funktionsverteilung und verteilte Kontrolle sind zwei wichtige Architekturmerkmale zur Erzielung einer hohen Systemzuverlässigkeit. Die sogenannte Error Recovery bewirkt dabei die Wiederherstellung eines konsi...
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Chapter and Conference Paper
Implementing Fault-Tolerance in a Distributed System Architecture
Atomic actions are widely accepted as a powerful general concept for providing consistency and error recovery. However, so far the necessary mechanisms to implement these properties severely confine interproce...
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Chapter and Conference Paper
The Value of Computer Tomography (CT-Scanning), Orbital Venography and Carotid Angiography in the Diagnosis of Exophthalmos
The results obtained by computer tomography (CT-scanning) in the diagnosis of exophthalmos have been so favourable that this new method of investigation should be regarded as the radiological aid of choice in ...
