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Showing 1 to 20 of 227 for “"DLS"”.
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Characterizing Nanoparticle Size by Dynamic Light Scattering Technique (DLS)
<p>The Dynamic Light Scattering Technique was used to determine the size, shape and diffusion coefficient of nanoparticle. The intensity auto correlation functions of light scattered by particles in a solution were measured by using a photomultiplier tube and analyzed to get the relaxation rates …
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Die Dynamisierung der winkelstabilen Plattenosteosynthese mit Hilfe der Dynamic Locking Screw (DLS) : ein experimentelle Studie an Schafen
… Dynamischen Kopfverrieglungsschrauben (DLS) refixiert. Der Heilungsverlauf wurde radiologisch in einem dreiwöchigen Rhythmus über sechs, beziehungsweise zwölf Wochen kontrolliert. Am Ende dieses Zeitraumes wurden die isolierten Gliedmassen einer biomechanischen Steifigkeitstestung und …
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Dynamic Light Scattering for the Characterization of Polydisperse Fractal Systems by the Example of Pyrogenic Silica
Dynamic light scattering (DLS) is a method to size submicron particles by measuring their thermal motion (diffusion) in suspensions and emulsions. However, the validity of the Stokes-Einstein equation that relates the diffusion coefficient and the particle size is limited to spherical particles and …
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Lightweight Federation of Non-Cooperating Digital Libraries
… in federating heterogeneous digital libraries (DLs). The objective of this research is to demonstrate the feasibility of interoperability among non-cooperating DLs by presenting a lightweight, data driven approach, or Data Centered Interoperability (DCI). We build a Lightweight Federated Digital …
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A Single Alcohol Pre-exposure Alters Dorsolateral Striatal AMPA Receptor Dependent Binge and Compulsive-like Drinking
… use disorder and the dorsolateral striatum (DLS) is implicated in regulating this inflexible behavior. AMPA receptors have been implicated in both goal-directed (dorsomedial striatal dependent) and DLS dependent inflexible behaviors with antagonism in the DLS and general DLS inhibition …
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Applying the 5S Framework To Integrating Digital Libraries
… to integrate domain-specific (archaeological) DLs, illustrating our solutions for key problems in DL integration. An integrated Archaeological DL, ETANA-DL, is used as a case study to justify and evaluate our DL integration approach. We develop a minimum metamodel for archaeological DLs within …
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Reengineering PhysNet in the uPortal framework
… seeking needs of its constituents. As modern DLs often stay in synchronization with the latest progress of technologies in all fields, interoperability among DLs is often hard to achieve. With the advent of the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH) and Open …
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Polynomial-Time Reasoning Support for Design and Maintenance of Large-Scale Biomedical Ontologies
Description Logics (DLs) belong to a successful family of knowledge representation formalisms with two key assets: formally well-defined semantics which allows to represent knowledge in an unambiguous way and automated reasoning which allows to infer implicit knowledge from the one given …
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Evaluation of dynamic light scattering as a technique for the routine monitoring of therapeutic proteins on stability
… where appropriate. Dynamic Light Scattering (DLS) is one such technique, that has been described on several occasions as an early indicator of protein aggregation. Some benefits of DLS over other aggregation-monitoring techniques, is its ability to analyse proteins in their native environment, …
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Estimating Floodplain Vegetative Roughness using Drone-Based Laser Scanning and Structure from Motion Photogrammetry
We compared high-resolution drone laser scanning (DLS) and structure from motion (SfM) photogrammetry-derived vegetation heights at the Virginia Tech StREAM Lab to determine Manning's roughness coefficient. We utilized two calibrated approaches and a calculated approach to estimate roughness from …
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Human Reasoning and Description Logics: Applying Psychological Theory to Understand and Improve the Usability of Description Logics
Description Logics (DLs) are now the most commonly used ontology languages, in part because of the development of the Web Ontology Language (OWL) standards. Yet it is accepted that DLs are difficult to comprehend and work with, particularly for ontology users who are not computer scientists. The …
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Complexity results and practical algorithms for logics in knowledge representation
Description Logics (DLs) are used in knowledge-based systems to represent and reason about terminological knowledge of the application domain in a semantically well-defined manner. In this thesis, we establish a number of novel complexity results and give practical algorithms for expressive DLs …
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Streams, Structures, Spaces,Scenarios, and Societies (5S): A Formal Digital Library Framework and Its Applications
Digital libraries (DLs) are complex information systems and therefore demand formal foundations lest development efforts diverge and interoperability suffers. In this dissertation, we propose the fundamental abstractions of Streams, Structures, Spaces, Scenarios, and Societies (5S), which allow us …
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Open Digital Libraries
Digital Libraries (DLs) are software systems specifically designed to assist users in information seeking activities. Stemming from the intersection of library sciences and computer networking, traditional DL systems impose library philosophies of structure and management on the sprawling …
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Caracterización de tamaño del material particulado emitido por motores diésel utilizando dispersión de luz
… y ambiental. La dispersión dinámica de la luz (DLS), que se centra en la medición de la dispersión de la interacción luz-partícula a lo largo del tiempo, y la dispersión Mie o dispersión estática de la luz (SLS), que mide las intensidades de la dispersión en diferentes ubicaciones espaciales, …
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Reliability Analysis of Carbon Fiber Reinforced Polymer (CFRP) Strengthened Steel Beams
… bonded CFRP-to-steel double-lap shear (DLS) joints with thin outer adherends was performed first, to study the bond behavior when dominated by adhesive shear stresses. A comprehensive experimental database of the DLS joints was compiled to study the model uncertainty for the widely …
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A Lightweight Defeasible Description Logic in Depth
Description Logics (DLs) are increasingly successful knowledge representation formalisms, useful for any application requiring implicit derivation of knowledge from explicitly known facts. A prominent example domain benefiting from these formalisms since the 1990s is the biomedical field. This area …
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The complexity of description logics with concrete domains
… domains are an extension of Description Logics (DLs) that allows to integrate reasoning about conceptual knowledge with reasoning about "concrete qualities" of real world entities such as their age, weight, shape, and temporal extension. In this thesis, we perform an in-depth analysis of the …
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Buckets: Smart Objects for Digital Libraries
<p>Discussion of digital libraries (DLs) is often dominated by the merits of various archives, repositories, search engines, search interfaces and database systems. While these technologies are necessary for information management, information content and information retrieval systems should …
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A High-quality Digital Library Supporting Computing Education: The Ensemble Approach
Educational Digital Libraries (DLs) are complex information systems which are designed to support individuals' information needs and information seeking behavior. To have a broad impact on the communities in education and to serve for a long period, DLs need to structure and organize the resources …
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