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Opin vísindi: Síðast bætt við
Atriði 1921-1940 af 2967
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(2016-02)Current efficiency loss in aluminum electrolysis happens due to a variety of factors. One such factor is the presence of impurities. Concerns about impurities have been voiced since the quality of raw materials has declined and dry-scrubbers were ... -
(2016-02)Space-charge limited emission in vacuum microdiodes can go through transverse modulation under certain conditions. The frequency of this modulated current is in the terahertz band and it can be tuned by changing either the the gap spacing or the gap ...
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(2016-01)Liquid dominated reservoirs are a common type of hydrothermal reservoirs. They consist of fractured rock and reservoir fluid which may obey Darcy’s law. Steam can form in such reservoirs either through heat input which causes temperature increase or ...
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(University of Iceland, School of Health Sciences, Faculty of Medicine, 2018-12)Pneumococci are commonly carried asymptomatically in the nasopharynx, especially in children. Pneumococci are also one of the major bacterial pathogens causing both severe infections and non-severe infections in both children and adults. The most severe ...
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(University of Iceland, School of Health Sciences, Faculty of Medicine, 2019-04)Transcriptional regulatory mechanisms drive the maturation of B cells to plasma cells, with a dramatic transcriptional rewiring taking place during the transition. This rewiring is dependent on a number of factors, including the transcription factor B ...
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(2018-06)In the recent years, formal modeling and verification of realtime systems have become very important. Difficult-to-use modeling languages and inefficient analysis tools are the main obstacles to use formal methods in this domain. Timed actor model is ...
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(2018-06)New automatic methods for enumerating permutation classes are introduced. The first is Struct, which is an algorithm that conjectures a structural description using rules similar to generalized grid classes. These conjectured structural descriptions ...
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(American Chemical Society (ACS), 2018-11-12)We report stable orthogonally polarized domains in high-density polariton solitons propagating in a semiconductor microcavity wire. This effect arises from spin-dependent polariton–polariton interactions and pump-induced imbalance of polariton spin ...
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(University of Iceland, School of Health Sciences, Faculty of Medicine, 2019-06)Acute kidney injury (AKI) is a growing problem worldwide and is associated with high morbidity and mortality. AKI is a known complication following cardiac operations and coronary angiography (CA). Following CA, AKI has been associated with contrast ...
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(University of Iceland, School of Engineering and Natural Sciences, Faculty of Industrial Engineering, Mechanical Engineering and Computer Science, 2019-05-20)High-temperature geothermal wells are drilled in stages and constructed of several concentric steel casings that are cemented over their entire external surface for sealing and structural support purposes. The structural integrity of such casings is ...
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(2019-05-28)Superheated steam from high enthalpy vapor dominated geothermal fields offers an opportunity to extract greater exergy per unit flow with higher thermodynamic output efficiency compared to conventional geothermal wells. The first full scale well drilled ...
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(University of Iceland, School of Health Sciences, Faculty of Medicine, 2019-06-05)Streptococcus pneumoniae is a Gram-positive diplococcus that is both a commensal bacterium in the upper respiratory tract of humans, and a common pathogen. The infectious manifestations of pneumococci span a range from benign to serious; from acute ...
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(2016-06)This dissertation is composed of two parts. In the first part, performance evaluation and verification of safety properties are provided for real-time actors. Recently, the actor-based language, Timed Rebeca, was introduced to model distributed and ...
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(2016-02)This thesis presents the NV-tree (Nearest Vector tree), which addresses thespecific problem of efficiently and effectively finding the approximatek-nearest neighbors within large collections of high-dimensional data points.The NV-tree is a very ...
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(2016-06)The research project focuses on investment behavior and the Icelandic economic bubble and crash, emphasizing that investment behavior has to be seen within a historical and cultural environment. As such the project is related to financial history and ...
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(University of Iceland, School of Health Sciences, Faculty of Pharmaceutical Sciences, 2019-06)In the course of a nearly century-long global effort to discover new bacterialderived drugs from the environment, there have been few innovations to the way that researchers have collected samples and subsequently created microbial libraries sourced ...
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(University of Iceland, School of Health Sciences, Faculty of Medicine, 2019-06)Sykursýki 2 (SS2) og forstig SS2 eru þekktir áhættuþættir æðakölkunar og alvarlegra fylgikvilla hjarta- og æðasjúkdóma. Skimun sjúklinga með brátt kransæðaheilkenni (BKH) með sykurþolsprófi hefur gefið til kynna hátt algengi ógreindrar SS2 og forstigs ...
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(University of Iceland, School of Engineering and Natural Sciences, Faculty of Life and Environmental Sciences, 2019-05-31)The protein and amino acid metabolism of thermophilic bacteria has been a neglected aspect of their physiology despite its biotechnological potential. Under anaerobic conditions, the metabolism of many proteogenic amino acids requires the presence of ...
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(Reykjavik University, School of Science and Engineering, 2019-05-17)Maintaining small physical dimensions of antenna structures is an important consideration for contemporary wireless communication systems. Typically, antenna miniaturization is achieved through various topological modifications of the basic antenna ...
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(Springer Science and Business Media LLC, 2019-05-03)Bone area is one measure of bone size that is easily derived from dual-energy X-ray absorptiometry (DXA) scans. In a GWA study of DXA bone area of the hip and lumbar spine (N ≥ 28,954), we find thirteen independent association signals at twelve loci ...
Atriði 1921-1940 af 2967